1895results about "Safety devices for lifting equipments" patented technology

An improved dimensional detection system is portable and can be used to characterize a workpiece. The dimensional detection system employs as few as a single focused light source and as few as a single camera along with a calibration data set to convert the illuminated pixels of an image of a beam on the workpiece into a cloud of real world points in space on an outer surface of the workpiece. The cloud of points can be processed to characterize the workpiece, such as by determining the right hexahedron that would encompass all of the real world points in space and which could be used to determine a dimensional weight of the workpiece.

Disclosed is a method and apparatus for selectively immobilizing equipment to ensure the safety of a proximate worker. The apparatus comprises an article of clothing wearable by the proximate worker, a sensor and a stopping means for stopping the movement of a portion of the equipment in response to the sensing. The article of clothing has a RFID tag having an antenna distributed about the article so as to substantially surround a worker wearing the article of clothing. The sensor senses the proximity of the RFID tag to a portion of the equipment. The method comprises sensing the proximity of the RFID tag to a portion of the equipment and stopping the movement of a portion of the equipment in response to the sensing.

An industrial truck, in particular a fork lift truck, has a driver's seat that is oriented in the forward direction, at least one screen that is located in the vicinity of the driver's seat, a first camera pointing toward the rear of the industrial truck and at least one additional camera that is directed toward the rear. The first camera is provided to view a distant area and the additional camera is provided to view a near area behind the industrial truck. The image taken with the first camera and/or the image taken with the additional camera can be displayed on the screen. There are advantageously two additional cameras to view the near area.

A digital multimedia device capable of functioning as both a portable multimedia player (PMP) and a notebook computer is provided. The digital multimedia device includes: a computer unit including a body, a first processor included in the body to operate a first operating system (OS), a first display unit for displaying image information processed by the first processor, and a first input unit; a PMP unit including a second processor to operate a second operating system, a hard disk drive (HDD) for storing programs and data, a second display unit for displaying image information processed by the second processor, and a second input unit; and a docking unit disposed in the computer unit and the PMP unit for docking the PMP unit to the computer unit, wherein, when the PMP unit is docked with the computer unit, the computer unit shares the HDD with the PMP unit to perform processing operations, and the PMP unit operates independently or in association with the computer unit.

The invention discloses a fully automatic mobile hydraulic lifting platform machine. The machine comprises a chassis, a travelling drive device, a lifting device, hydraulic and electrically controlled systems and a charging device, wherein the lower surface of the chassis is provided with wheels, the travelling drive device and a braking device, the lifting device, the hydraulic system, a steering system, a operation system, a control system, the charging device and a foot device are arranged on the chassis, the chassis and a platform are provided with a safety device and a measurement system, and the lifting device is provided with a floating platform device. The machine of the invention can bear the rated weight according to the demand; and the travelling mechanism thereof can realize forth-back travelling and left-right travelling, 90 degrees of translation and crab motion, and the lifting platform device can move longitudinally and transversely, rotates and go up and down freely. Owning to various movement choices, the degrees of mechanization and automation are high, and the machine can change according to different conditions and accurately and timely position the installation position of the chassis, thus increasing the efficiency, ensuring the satisfy and satisfying the demand of the railway vehicle manufacture and assembly production line.

An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor, and at least one valve network.

A forklift safety sensor and control system for preventing unsafe wear on the bottom surface of the fork. A fork height sensor detects when the fork is below a predefined threshold height at which the bottom surface is in close proximity to the ground or is in contact with the ground. The sensor sends a height signal to a system controller. In response, the controller sends a lockout signal to a lockout device, which prevents the forklift's drive mechanism from moving the forklift relative to the ground. The controller may also send an alert to the driver. When the fork is raised above the threshold height, the lockout is removed.

An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor and at least one valve network.

A subject of the present invention is to provide an overturning prevention apparatus for a forklift with various means. A cargo height H is calculated from a piston displacement detected by a displace sensor 21 and a cargo weight W is calculated by pressure P detected by a pressure sensor 22. A controller 20 detects a limit speed V1 in the case of non-cargo weight and a limit speed V2 in the case of the maximum cargo weight. By linearly interpolating the limit speeds V1 and V2, limit velocity Vc in the case that the cargo weight is W by utilizing a minimum turning radius memorized in the controller as a turning radius. If an actual velocity Va measured by a velocity sensor 23 is reached to the limit velocity Vc, the warning device 30 is actuated for warning an operator.

A materials handling vehicle is provided comprising: a base; a carriage assembly movable relative to the base; at least one cylinder coupled to the base to effect movement of the carriage assembly relative to the base; and a hydraulic system to supply a pressurized fluid to the cylinder. The hydraulic system includes an electronically controlled valve coupled to the cylinder. The vehicle further comprises control structure to control the operation of the valve such that the valve is closed in the event of an unintended descent of a carriage assembly in excess of a commanded speed.

A cargo handling vehicle comprises cargo carriers 21, a lift unit 1, a vehicle main body 24, and a running system 3, and the cargo handling vehicle further comprises a lift height detecting section 2 for detecting the vertical position of the cargo carriers 21, a traveling distance measuring section 4 for measuring a forward distance S1 covered by the vehicle main body 24 which starts its forward movement after the cargo carriers 21 are started to be raised and a rearward distance S2 covered by the vehicle main body 24 which starts its rearward movement after having completed its forward movement, and a movement control section 9 for prohibiting the lowering movement of the cargo carriers 21 until a rearward distance to be covered by the vehicle main body 24 which starts its rearward movement in a state in which the vertical position H2 of the raised cargo carriers 21 exceeds a preset reference height H1 becomes equal to or greater than the forward distance covered by the vehicle main body 24.

A travel control apparatus for a forklift is disclosed. The forklift is provided with a loading device that performs load handling operations by raising and lowering a load, and a drive motor which generates a drive force for travel and is capable of generating a braking force. The apparatus is provided with a sensor for detecting the speed of the motor, a seat switch, a height switch, a load sensor, and a control section. The control section causes the drive motor to generate a braking force when the seat switch detects that the driver has left the seat in the case where the motor speed sensor detects a traveling state, and also changes the strength of the braking in accordance with the height of the loading device and the weight of the load.

A finger-mounted remote control device capable of wirelessly transmitting a travel request signal to a materials handling vehicle. The finger-mounted remote control device includes a rigid mounting structure adapted to be mounted over at least one finger of an operator's hand; a mounting strap coupled to said rigid mounting structure for securing said rigid mounting structure to the at least one finger; a wireless transmitter/power pack unit coupled to said rigid mounting structure; and control structure coupled to said mounting structure and comprising a switch adapted to be actuated by an operator's thumb so as to cause said wireless transmitter/power pack unit to generate a travel request signal to the materials handling vehicle.

Provided is a lifting device, lifting system and method for lifting a vehicle. The lifting device according to the invention includes a frame with a carrier configured for carrying the vehicle; a drive which acts on the carrier, wherein the drive includes an integrated hydraulic cylinder drive unit configured for raising the carrier with the integrated hydraulic cylinder drive unit including: a housing of a cylinder; a piston rod movable in the housing; a height measuring system configured for measuring the displacement of the piston rod; and an integrated hydraulic fluid tank and motor unit that is configured for driving the piston rod.

The invention discloses an intelligent lifting platform for electricity maintenance and a using method thereof. The intelligent lifting platform comprises a hydraulic system, an electric system, a base, a maintenance platform and a lifting device. Leveling devices are arranged on the base. A first-level lifting platform is located above the base and arranged on the leveling devices. The first-level lifting platform is provided with an acceleration meter and a gyroscope module which can measure inclination of the first-level lifting platform accurately. A controller controls four leveling hydraulic cylinders to act, so that the first-level lifting platform is in a horizontal state. A supporting device is arranged on the base. The lifting device is arranged on the first-level lifting platform. The maintenance platform is arranged on the lifting device. Sliding grooves for rolling wheels to slide therein are formed in the lower plane of the maintenance platform and the upper plane of the first-level lifting platform. The rolling wheels are arranged at the ends of scissor arms of the lifting device, the scissor arms slide to the middle from the two sides at the same time to enable the gravity center of the maintenance platform to be located in the middle of the base, the situation that due to unbalance loading, the maintenance platform topples can be prevented, and safety and reliability in the using process are ensured.

A safety device for an aerial lift (10) having operator controls (23) for manoeuvring its basket (20) to a desired location and including at least one passive normally closed safety switch means (30)(130), e.g. m emergency switch, operable to cut electrical supply and prevent further movement of the basket (20), the safety device comprising a switch activation device (27,160,170) extending across the basket proximate to said controls (23) and an auxiliary safety switch (26) connected in series with the safely switch means (30,130) with its contacts C1 normally closed (switch on) unless caused to open (switch off) by operation of said switch activation means, thereby cutting off said electrical supply.

Systems and methods include an integrated display having a graphical user interface that combines aspects of a telematic system with a vehicle control system. The integrated display combines a touch screen and a manual input keypad. Using both the touch screen's graphical user interface and the keypad, the integrated display can operate in multiple operation modes, including a touch mode where the operator controls the graphical user interface functions by touching predefined areas or tiles on the screen, and a keypad mode, where the operator controls the graphical user interface functions by touching keys on the manual input keypad. The integrated display can be controlled in a mixed mode operation, where the operator can control the graphical user interface functions using both the touch screen (touch mode) and the manual input keypad (keypad mode) to complete data entry processes, for example, and the integrated display can automatically transition between modes.

A ground-movable load-lifting vehicle for lifting a load over ground. The vehicle comprises a platform bed, a ground-movable carriage, and an extendible scissor linkage assembly supporting the platform bed spacedly over the carriage. A hydraulic ram system enables power extension of the scissor linkage assembly against the bias of a load supported by said platform bed. The carriage further includes peripheral ground-engageable pivotal casters, rotatably mounted to the carriage in spaced apart fashion, and a pair of ground-engageable drive wheel assemblies, mounted for relative movement to a central portion of the carriage, wherein the drive wheel assemblies provide omnidirectional displacement capability for this load-lifting vehicle. A power unit, controlled by an electronic circuit, powers both the hydraulic rams of the scissor linkage assembly and the drive wheel assemblies.

The invention discloses an ultrasonic probe type anti-collision device for a working platform. The anti-collision device comprises ultrasonic probes, a probe signal processing module and a programmable logic controller (PLC), wherein the ultrasonic probes are mounted on the bottom surface, front surface, left side surface and right side surface of the working platform; the probe signal processing module is used for receiving mV-level voltage signals sent by the ultrasonic probes and converting the signals into controller area network (CAN) bus signals; and the PLC is used for receiving the CAN bus signals and controlling the normal operation, slow operation and stop operation of high-altitude operation equipment according to the signals. The system not only can prevent the working platform from colliding with an obstacle, but also can selectively stop the operation of the high-altitude operation equipment and constantly inform an operator of the distance between each surface of the working platform and the obstacle, thereby realizing intelligent safety control of the high-altitude operation equipment; the current detection range of the system is 0-2m, and completely meets the requirements of anti-collision safety detection on the working platform of any high-altitude operation equipment; and moreover, the system is convenient to mount, easy to debug, high in reliability and cheap in price.

A multiple envelope control system and method expands the operating capabilities of a lift vehicle. The vehicle includes a platform mounted to a telescoping main boom. The main boom is configured for lift/lower function and telescope function. The multiple envelope control system includes a selector switch for selecting between a plurality of capacity modes including at least a low load mode and a high load mode. A plurality of sensors are strategically positioned on the main boom to cooperatively define position zones of the platform. A control system determines in which position zone the platform located according to signals from the plurality of sensors. The control system controls an envelope of the platform based on a position of the selector switch. By strategically positioning the sensors to define the position zones, inexpensive switches, such as limit switches or the like, can be used, thereby reducing manufacturing costs of the machine.

A method for alerting an operator during linkage overload in a machine is disclosed. The method includes calculation of operational height of a payload carrier. Fluid pressure in one of a lift cylinder assembly and a tilt cylinder assembly is sensed and weight of a payload based on the fluid pressure is calculated. Maximum payload height based on the pressure of at least one of the lift cylinder assembly and the tilt cylinder assembly, is determined Based on the maximum payload height, a threshold payload height is determined and compared with an operational height of the payload carrier. When the operational height of the payload carrier is equal to or greater than the threshold payload height, at least one of a warning generation event and limiting raising of the lift cylinder assembly occurs.

The invention discloses an anti-tipping control method used for a fork truck. The control method comprises the following steps: 1, detecting attitude parameters of the fork truck in real time; 2, judging whether the fork truck is in a stable state or not according to a detection result obtained in the step 1, if so, executing step 3; otherwise, executing step 4; 3, continuing carrying out a current operation; and 4, controlling a gantry, reducing lift height or/ and reducing declination angle of the gantry. Through adoption of the method, deviation correction can be carried out on the fork truck immediately when the fork trunk is detected to be in an unsteady state, so as to ensure that tipping of goods or the tipping of the whole fork trunk can be avoided, thereby enhancing operation stability and reliability of the fork truck. The invention also provides an anti-tipping control system and a fork truck which comprises the system and has a corresponding technology effect.

A lift truck having an acceleration sensor and a feedback control system for automatically adjusting the tilt angle of the load supporting surface relative to the lift truck during lift truck operation. The control system maintains the load supporting surface substantially perpendicular to the direction of the resultant of the gravitational force vector and the travel acceleration force vector. The sensor is mounted to the mast for sensing the direction of the resultant vector and is connected as the feedback element of the control system. A controller stores a reference input comprising a stored value of angular direction representing the angular direction of the resultant vector when the lift truck is at rest and the cargo support fork is horizontal. The deviation or error of the control system is the difference between the stored vector direction and the sensed vector direction of the resultant of the two accelerations. The controlled element of the feedback control system, to which the control system output is connected, is the mast tilt actuator of the lift truck. The mast tilt angle relative to the lift truck is controllably varied to bring the currently sensed resultant angular direction into alignment with the stored reference angular direction.

The invention relates to a novel experiment lifting table which comprises an experiment table top and a base supporting the experiment table face. Two parallel shear fork mechanisms are in sliding connection between the experiment table top and the base. The two shear fork mechanisms are provided with adjusting devices which drive the shear fork mechanisms to stretch. A placing table which can extend out of the experiment table top is embedded on the experiment table top. The two shear fork mechanisms are connected with driving pieces which drive the placing table to extend out. A buffering supporting device is connected between the base and the experiment table top. According to the experiment lifting table, the placing table is embedded on the experiment table top, when the experiment table top is adjusted to go up and down manually, the placing table is driven to extend out of or retract back to the experiment table top, during an operation experiment, the placing table can be used for placing of experiment articles independently, and the operation experiment on the experiment table top is not affected.

A materials handling vehicle is provided comprising a frame including structure for defining an operator compartment and structure for defining a battery compartment; first and second front wheels coupled to the frame; a rear steer wheel assembly coupled to the frame; an electric motor; and a controller coupled to a front wall of the frame to control the operation of the electric motor.

The invention relates to a control technique, and in particular relates to a control technique of a hydraulic aerial cage, aiming at realizing automatic rescue preparation and reclaiming of the hydraulic aerial cage. The embodiment of the invention also provides a control system of the hydraulic aerial cage. The control system comprises a landing leg length sensor of each landing leg, at least one inclination angle sensor, a cantilever crane length sensor of each cantilever crane, a cantilever crane angle sensor of each cantilever crane, a range finder, a get-off programmable controller and a get-on programmable controller. According to the automatic rescue preparation in high altitude reclaiming and a reclaiming control method provided by the embodiment of the invention, operating personnel does not need to do complex operation, and the system carries out the operation completely automatically, so that the control precision on the reclaiming at the high altitude is improved, and the intensity of manual operation is reduced; and the precise control is carried out by the sensors and detection signals of limiting switches, thereby avoiding the damage, caused by excessive operation, to machinery.

A drive control apparatus for a forklift. Based on the load state, it is determined whether to limit a maximum vehicle speed and an acceleration/deceleration during traveling of the forklift. Limitation contents regarding the maximum vehicle speed and the acceleration/deceleration is determined based on a determination result of whether to put the limitations. A speed of the engine is adjusted based on the determined limitation contents, thereby controlling driving of the forklift. When the determined limitation contents are changed, an acceleration/deceleration limitation value is selected from a plurality of acceleration/deceleration limitation values according to the pattern of the change of the limitation contents, and drive control related to the acceleration/deceleration is executed to limit the acceleration/deceleration of the forklift by using the selected acceleration/deceleration limitation value.

The invention discloses a 3D machine visual forklift travelling auxiliary safety system and method. The travelling state and peripheral operating environment of a forklift can be monitored in real time, and safety of personnel and assets in the forklift operation process is ensured. The system comprises an operating environment perceiving subsystem (1) formed by adopting a plurality of intelligent depth cameras as mains, a vehicle state monitoring subsystem (2) for collecting travelling states such as the speed, the posture and cornering of a vehicle, an output subsystem (3) for being connected with a vehicle power control assembly and controlling a braking control assembly, and an information processing subsystem (4) for logic control and intelligent judgment and recognition. According to the 3D machine visual forklift travelling auxiliary safety system and method, through the intelligent depth cameras and a plurality of sensors, the operating environment and the vehicle condition of the forklift are subjected to overall monitoring, obstacle detecting and warning can be provided, and through accurate recognition of personnel and objects, the functions of active personnel safety warning and controlling can be further achieved.

The invention relates to a safety mechanism used for an oil cylinder or other hoisting devices, in particular to the screw-typed servo-supporting mechanism of a lifting-up oil cylinder hoisting device. The safety mechanism is characterized in that a base is provided with a heavy-loaded screw; a bearing circular nut is arranged on the heavy-loaded screw; a bearing is arranged between the bearing circular nut and the base; a spring is arranged below the bearing; the output shaft of a servo motor is connected with the bearing circular nut, the external side of the bearing circular nut is prepared into a gear; the base is provided with a micrometer which is connected with an electron amplifier by a leading wire; the output shaft of the servo motor is provided with a gear which is meshed with the gear at the external side of the bearing circular nut; and clearance is reserved between the bearing circular nut and the base. The safety mechanism has simple, compact and reasonable structure, can still effectively support the heavy-loaded workpiece when the oil pressure of the oil cylinder disappears suddenly, uses the servo-supporting screw to keep self-locking, avoids the sliding of the heavy load and ensures the safety of the lifting-up of the heavy-loaded workpiece.

A processing device comprising a graphical user interface in an industrial vehicle is provided. The processing device comprises a touch screen display that receives touch gesture commands from a vehicle operator, memory storing executable instructions, and a processor in communication with the memory. The processor when executing the executable instructions: defines a plurality of widgets, wherein each widget comprises a visual representation of a current state of an associated function of the vehicle, displays a subset of the plurality of widgets on a portion of the touch screen display defining a plurality of widget spaces, and displays an icon tray on the touch screen display comprising one or more icons, in which at least one of the one or more icons corresponds to a respective one of the plurality of widgets.