2157results about "Braking devices for hoisting equipments" patented technology

A deployable crafting machine may include a vehicle and a gantry system. The gantry system may be configured to be collapsed on the vehicle during which the gantry system is inoperable and to be expanded during which the gantry system is operable and supported at least in part by the vehicle. A deployable crafting process may include moving a vehicle to a first location while a gantry system is stored on the vehicle in a collapsed and inoperable state and expanding the gantry system into an operable state after the vehicle arrives at the first location during which the gantry system is supported at least in part by the vehicle.

A method and apparatus for performing an operation on a work surface of a structure. The apparatus may comprise a motion platform and an overhead support system. The motion platform may be configured to be positioned above the work surface of the structure to perform the operation on the work surface. The overhead support system may be configured to carry the motion platform across a floor of a manufacturing environment from a first location to a second location.

A vertically-adjustable gantry assembly installation adapted for removal or placement of a train bridge-span of the type which spans and is supported by two piers, comprises a gantry assembly positioned on load-bearing first ground-support locations, the gantry assembly comprising a gantry and a ground-engaging vertical support and lift system, the vertical support and lift system adapted for supporting a combined weight of the gantry and a bridge span in at least one operational vertical position above respective bridge span support-surfaces of the piers including a position corresponding to a disembarking plane in which the leg portions are extended from a stowed position to an extent at least sufficient for the gantry assembly to self-liftoff the pre-installation conveyance system onto the first ground-support locations to effect the gantry assembly installation.

The invention discloses a foldable gantry crane capable of ascending and descending, and belongs to the field of carrying tools. The foldable gantry crane capable of ascending and descending comprises a beam and supporting legs arranged on the two sides of the beam. Each supporting leg comprises a lifting supporting rod connected with the beam and a fixed supporting leg in telescopic fit with the lifting supporting rod, wherein a lifting mechanism is arranged between the lifting supporting rod and the fixed supporting leg. The beam is cut off from the middle, the two parts formed after cutting are hinged together, and the hinging portions are fixedly connected through a connecting plate. The two ends of the beam are connected with the upper portions of the lifting supporting rods through hinges respectively. After the connecting plate is detached, the beam can be bent downwards, and then the supporting legs on the two sides of the beam can be retracted inwards. Height adjustment can be performed as needed when the gantry crane is in use, so that use is easy and convenient. The beam can be lowered and folded when the gantry crane is not in use, so that occupied space is reduced, and transport is facilitated. The gantry crane is simple in structure, convenient to operate and low in cost.

The invention provides an electric heavy truck battery charging and replacing system. The system comprises a battery box storage platform, a battery to-be-replaced vehicle parking area and a hoistingmechanism, wherein the platform comprises a circulating channel located between the middle and storage areas located on the two sides, the circulating channel is used for transferring a battery box, and providing transfer space; the storage areas are used for storing the battery box, and/or charging the battery box, movable devices are arranged between the storage areas on the two sides and the circulating channel, so that the battery box can move between the circulating channel and the storage areas on the two sides; and the battery to-be-replaced vehicle parking area is used for parking to-be-replaced vehicles, the hoisting mechanism is located above the movable battery box platform and the battery to-be-replaced vehicle parking area and used for lifting the battery box between to-be-replaced battery vehicles and the middle channel to realize the replacement of the battery box of the battery to-be-replaced vehicles. According to the system, the system structure is simplified, the battery replacement time can be controlled to 3 minutes, and the system has the advantages of being small in size, low in cost and the like.

A dual trolley, single boom crane system for loading and unloading containers from ships moored at a dock that effectively doubles the rate of container loading and unloading of conventional prior art single boom crane systems. The present invention also concerns a novel method for retrofitting conventional prior art single boom crane systems to convert them to dual trolley systems, while at the same time retaining the basic geometry of the prior art system so that the same number of multiple cranes may be positioned over the dock side.

The invention relates to a through-typed double-trolley bridge-typed crane, comprising a cart, a main beam arranged on the cart, a first cargo trolley and a second cargo trolley; the first cargo trolley comprises a matter-fetching device, a left flap frame and a right flap frame; the matter-fetching device is hung on the left flap frame and the right flap frame by a lifting sling, and a U-shaped space is formed on the upper surface of the lifting sling and the matter-fetching device of the first loading trolley; the second loading trolley comprises a frame, a traversing mechanism arranged on the frame and the matter-fetching device hung on a traversing part by the lifting sling; rails which support the second loading trolley are arranged between a guide rail for supporting the left flap frame of the first loading trolley and a guide rail for supporting the right flap frame of the first loading trolley; the extending directions of all the guide rails are in parallel and the second loading trolley can pass through the U-typed space.

A loading device for ISO containers in a container terminal with a container bridge for the loading and unloading of ships and with automatic incoming and outgoing transfer of the containers by means of automatic guided vehicles, with at least one container load suspension device in the form of a spreader and devices for the intermediate positioning of the container within the loading device to allow the installation or removal of the twistlocks, and with platforms for the workers performing this task. The loading device consists of a polar bridge crane, which can rotate around its center vertical axis, and which is designed as a bridge crane with a trolley capable of traveling on a crane bridge supported on a circular track located in the rear area of the land-side rail of the container bridge.

A lifting apparatus includes a plurality of preferably four carriages, each carriage supporting a lifting boom. Two booms are pinned together to define a first pair, a second two booms being pinned together to define a second pair. Each pair of booms and connected carriages are placed on a preferably common travel path. Rigging can include a horizontal beam that extends between the first pair of booms and the second pair of booms. The beam can be attached to the pinned connection of each pair of booms with a sling. A powered motor-driven winch is used to power a cable that is wound between sheaves on the lower end portions of a pair of booms that are connected together. During use, the winches are simultaneously or nearly simultaneously operated to elevate the first pair of the booms and the second pair of booms at about the same time. The horizontal beam that spans in between booms is elevated. Packages can be lifted with the horizontal beam by depending one or more slings from the horizontal beam to the package to be lifted. The apparatus can use carriages that are provided with wheels that travel on rails. Carriages can use rubber tires, or can be sled or skid-mounted without the use of wheels or tires.

A gantry crane has a rigid open three-dimensional truss cross-beam. A lower I-beam and parallel upper X-beams are interconnected with angular gussets and angle irons forming a triangular open beam bounded by three trusses. Angular gussets on the sides are as parallel members to provide maximum strength. One end support is rigid, with upper ends of legs having plates bolted to one end plate extending between the X-beams. Outrigger legs have an upper plate bolted to a sloped plate at an extended end of the I-beam. Vertical support legs at the other end have a strengthening cross-member and upper vertical plates which are bolted to the end plate on the X-beams. The unusual cross-beam structure and the unusual rigid leg structure and rigid interconnection provide rigidity of the entire crane. The vertical support legs accommodate variations in tracks.

The invention provides a folding-lifting type movable small-scale portal crane. The portal crane is characterized by comprising a lifting part, a shaft fixing part and rotary support parts, wherein the lifting part can be fixed on a fixed position on the shaft fixing part in a detachable connection manner, and the fixed position can be adjusted in the vertical direction; the shaft fixing part is fixedly connected with the rotary support parts, and the rotary support parts can rotate in the horizontal plane by taking the shaft fixing part as the axis; the lifting part comprises chain blocks, a cross beam and multiple groups of side support parts; the shaft fixing part comprises multiple groups of lifting support legs, and each group comprises multiple support legs; the rotary support parts comprise bodies and wheels. The folding-lifting type movable small-scale portal crane has the beneficial effect of being capable of being unfolded in the working process, so that the stability of the crane is guaranteed; the portal crane is folded and packed up in the daily storage process, so that the occupied area and volume of the crane are reduced; multiple working states of the portal crane can be adapted to different space sizes and channel sizes; as the crane is provided with the wheels, the crane can conveniently move in the small-range movement process.

The invention relates to hoisting equipment, in particular to a rubber-tyred gantry crane with a suspension crane and a construction method thereof. The crane consists of a gantry and a hoisting device arranged on the gantry, wherein a walking mechanism is arranged at the lower part of the gantry; a balancing weight block is arranged at the rear end of the gantry which is also provided with a generating unit and an electric control device which are connected with the hoisting device and the walking mechanism; the rubber-tyred crane is novel hoisting equipment which combines cranes of tyre type, gantry type and suspension arm type; the rubber-tyred walking mechanism ensures that an LTD10 type crane has more flexible forward, backward and steering and wide running range and is not limited by tracks; the steering mechanism adopts an electric push rod as steering power, has sensitive reaction and is beneficial to improving the operation efficiency; a gantry structure has favorable stable performance, small volume, can be integrally transported and is convenient to install on site; and in a winch mechanism of the rubber-tyred crane, an electric hoist with mature technology is used, so that the manufacturing construction period and the cost can be saved.

An embodiment of the invention discloses an elevator fault early warning method and a relevant server. The elevator fault early warning method and the relevant server are used for analyzing monitoring data relevant to operation states of an elevator, and sending early warning information to monitoring equipment when the current operation states are judged to be abnormal. The method comprises that normal operation parameters of the elevator are obtained and are used for indicating normal operation states of the elevator; the normal operation states of the elevator are confirmed according to the normal operation parameters; the monitoring data sent by the monitoring equipment are received and are the current elevator operation parameters acquired by the monitoring equipment; whether the monitoring data deviate the normal operation states or not are judged, if the monitoring data deviate the normal operation states, the early warning information is sent to a monitoring terminal. The elevator fault early warning method can prompt monitoring stuff to troubleshoot fault hidden danger of the elevator, and solves the problem that the fault hidden danger can not be warned early.

A ropeway transport system of a long-span steep terrain wind power device comprises a main cable (1), a tower (2), a hoisting cable (3), a pulling cable (4), a crane carriage (5), a rack winch (9), a steel cable (6), an anchor (7) and a tower top steering pulley (8); the tower top steering pulley (8) is installed on the tower (2); the main cable (1) and the steel cable (6) are fixed on the anchor (7); the other ends of the main cable (1) and the steel cable (6) are fixed on the tower top steering pulley (8); two ends of the pulling cable (4) are connected with the rack winch (9); and two ends of the hoisting cable (3) are connected with a hoisting winch (10). The system overcomes the problems of big construction difficulty, high project construction cost and serious environment damage when construction roads are built in the mountainous area by using a traditional technique. The invention provides a transport solution for a heavy cargo device of a steep terrain wind power device in a mountainous area and designs a device for realizing the solution.

A hydraulic portal crane comprises a portal frame structure. A cart walking device is arranged at the bottom of the portal frame structure. A cab is arranged in the middle of the portal frame structure. Oil cylinder jacking mechanisms are arranged on the two sides of the portal frame structure. A lifting appliance translation frame, a lifting appliance rotating frame and a lifting appliance turnover frame are arranged at the top of each oil cylinder jacking mechanism. Each lifting appliance turnover frame is hinged to the top of the corresponding oil cylinder jacking mechanism. The tops of the two lifting appliance turnover frames are connected through a sliding cross beam. The translation frames are arranged on the sliding cross beam. Each lifting appliance rotating frame is arranged below the corresponding lifting appliance translation frame and provided with a lock device. According to the hydraulic portal crane, all operation tasks of containers in a train freight transport yard can be completed, and for example, the containers can be unloaded from a train, can be mounted on a vehicle and can be placed on the ground to be stacked; the containers can be turned over by a certain angle, and loading and unloading of bulk materials are completed; and the hydraulic portal crane is small in size and small in weight.

The invention provides a mechanical bar conveying device consisting of a horizontal travel limiting device (1), a vertical axis servo reducer (2), a vertical descent depth detector (3), a vertical axis travelling mechanism (4), a horizontal axis servo reducer (5), a horizontal drive gear (6), a horizontal tow chain (7), a horizontal moving mechanism (8), a manipulator torque detector (9), a safety detection mechanism (10), a main frame (11), a horizontal frame (12), a vertical movement mechanism (16), a tow chain bracket (17), a tow chain (18), a vertical rack-and-pinion mechanism (19), a horizontal linear guide track (20), a vertical beam (21), a claw clamping mechanism (22), a claw ball screw (23), a manipulator servo reducer (24), a manipulator depth detector (25), and a claw and travel limiting combined mechanism (26). The device realizes automatic conveying of bars, and avoids the problems of manual conveying process, such as high environmental temperature, large intensity, low work efficiency and high risk of industrial accidents.