4848 results about "Forklift truck" patented technology

A braking system for a lift truck performs all service braking using truck traction drive motors. Mechanical, spring applied, electrically released brakes are coupled to wheels on opposite sides of the truck with the mechanical brakes applying unequal braking forces to the wheels. The mechanical brakes perform park braking and, in the event an electrical system problem arises, backup braking as well that can be modulated by an operator of the truck regardless of the operating condition of the truck.

A pallet system includes a pallet body. The pallet body is formed from a first, independently formed first portion and a second blow molded second upper portion insert molded to the first portion. The pallet body may have two to eight recesses for forklift truck fork access. The second upper portion has a generally rectangular surface for carrying loads. The portions may have anti-skid properties, for example, a knurled topside surface or rubber coated bottom. At least one foot is attached to the second upper portion by insert molding. At least one runner may be attached to each foot to form part of the first portion. At least one stringer is attached to each runner to add further stability to the pallet. The runners and feet have channels or protruding members to effectively mate with the second upper portion. The system may also have top cap and tie members to affix the cap to one or more pallet bodies.

A cargo rack for transferring loads between a marine vessel and an offshore marine platform (for example, oil and gas well drilling or production platform) provides a frame having a front, a rear, and upper and lower end portions. The lower end of the frame has a perimeter beam base, a raised floor and a pair of open-ended parallel fork tine tubes or sockets that communicate with the perimeter beam at the front and rear of the frame, preferably being structurally connected (e.g., welded) thereto. Openings in the perimeter beam base align with the forklift tine tubes or sockets. The frame includes a plurality of fixed side walls extending upwardly from the perimeter beam that include at least left and right side walls. A plurality of gates are movably mounted on the frame including a gate at least at the front and at least at the rear of the frame, each gate being movable between open and closed positions, the gates enabling a forklift to place loads on the floor by accessing either the front of the frame or the rear of the frame. Each gate can be pivotally attached to a fixed side wall. The frame has vertically extending positioning beams or lugs that segment the raised floor into a plurality of load-holding positions. Each load holding position has a plurality of positioning beams or lugs that laterally hold a load module (e.g., palletized load) in position once a load is placed on the raised floor.

The present invention is a device, which illuminates light inside of a tractor trailer truck van and other loading vehicles at a loading dock during loading and unloading procedures. As professionals working with such vehicles understand, natural lighting is simply not enough to prevent serious loading and unloading accidents, primarily at the deep end of the truck trailer van body. The loading dock spot light of the present invention with its short body design helps prevent fork trucks from hitting and destroying it. The overall short body of the light structure is designed to stay out of the primary main path of the fork truck traffic, allowing the light emitted from the light bulb to just peek beyond the loading dock door seal edge. The present invention is a simple mechanical device, which reduces loading dock operator confusion during loading and unloading operation, maintenance, and repair.

A fork-lift truck includes a load carrier, a first optical detector, an optical analyzing unit, and a second optical detector. The analyzing unit receives and analyses information from the second optical detector, wherein the first and second optical detector are movable together with the load carrier, and the first optical detector is positioned in relation to the load carrier, such that a first field of view includes at least a part of the load carrier and an extension of the load carrier. The second optical detector is positioned, such that a second field of view includes a predetermined volume above the load carrier The position and orientation of the second detector is calibrated in relation to a predetermined position on the fork-lift truck, in case one or more objects are positioned in the predetermined volume, at least one three-dimensional relative position can be determined.

The invention relates to a tray, which belongs to the technical field of stacking and packaging materials. The tray comprises a rectangular or square tray body which is obtained by blowing and is formed in a manner that first and second tray sections with the same structures are connected with each other. The tray is characterized in that: first carrying bosses which are extended to the other side from one side of the first tray section and are protruded on the surface of the first tray section are formed at intervals on the first tray section; and a first shovel arm slot is formed between the adjacent first carrying bosses; second carrying bosses which are extended to the other side from one side of the second tray section and are protruded on the surface of the second tray section are formed at intervals on the second tray section; and a second shovel arm slot is formed between the adjacent second carrying bosses; the first and second carrying bosses are corresponding to each other; and the first and second shovel arm slots are corresponding to each other. The advantages are that: flexible selection requirement on insertion of the shovel arm of the forklift truck into the first shovel arm slot or the second shovel arm slot can be satisfied, the labor intensity of workers in loading and unloading can be reduced and the transfer efficiency of goods can be improved.

This invention relates to a hydraulic circuit for a forklift, and intends to lift a fork for lifting in high speed, or to inch the fork little by little, as occasion demands. In this hydraulic circuit, a first electric motor for driving a first electric motor disposed on a first route extending from a tank to a lift cylinder is on-off controlled. A check valve disposed on the first route downstream of the first hydraulic pump allows only an oil-flow from the oil tank to the lift cylinder. A second motor for driving a second electric motor disposed on a second route extending from a tank to a lift cylinder is PMW-controlled. A flow controlling valve is disposed on the second route downstream of the second hydraulic pump and including an electro-magnetic valve operated associating with the PMW-controlling of said second electric motor. A separating element hydraulically separates the check valve and the electro-magnetic valve of the flow controlling valve.

A pallet truck including a controller that calculates the height of the fork carriage without the use of mechanical devices such as switches or sensors. A calculated carriage height is derived by adding the amount of time that a carriage is commanded to be raised and offsetting that by the amount of time that the carriage lower button is depressed. The calculated carriage height is essentially an accumulated lift time where the time that the carriage is lifting is a positive value and the time that the carriage is lowering is a negative value. When these values are combined, the result is the present calculated carriage height. The controller further monitors the calculated carriage height such that if the carriage is too close to the ground, the maximum speed of the pallet truck is limited to prevent damage to the forks or ground due to striking or scraping between them.

The invention discloses an unmanned storage system and a warehouse output and input method. The problems that an existing system is complex in deployment, inconvenient to maintain, high in cost and the like are solved. In the embodiment of the invention of the system, two-layered channel supporting frames are arranged below storage racks, lower layers are used for allowing automatic guided vehicles to pass, upper layers are used for allowing normalized containers to be temporally cached or pass through, and interlayer supporting plates are through in the length direction or width directions ofthe whole storage racks. During implementation of goods warehouse output, forklift trucks move to the specified storage racks automatically and align the corresponding storage racks, the normalized containers on the storage racks are taken out with a goods collecting mechanism, then the forklift trucks descend to the upper layers of the supporting frames, and the containers are cached on the supporting plates; afterwards, the automatic guided vehicles move to the lower sides of the containers via the lower layers of the supporting frames to jack up the containers and further be disengaged from supporting pieces; and then the vehicles move to sorting sites via channels and roadways, and the warehouse input process is just on the contrary. The system can be deployed easily and is easy to maintain and low in cost, a large quantity of robots can execute concurrent operations through a scheduling system and the overall efficiency is high.

A forklift that can move itself and loads between two heights uses multiple sets of forks to stabilize the forklift while raising and lowering loads. A conventional set of pallet forks is mounted on a forward and rearward horizontally moveable chassis. Upper stabilizing forks are selectively extended forward from the forklift chassis to rest on a surface located below the load being moved. Lower stabilizing forks extend downward and forward from the bottom of the forklift for additional stability. A set of extendable front wheels extends forward to stabilize the forklift when moving the forklift between two heights. The pallet forks are mounted on a deck that can be raised and lowered. There are two independent drive systems that move the forklift depending on whether the main drive system is on the ground or elevated. The entire forklift can be remote controlled.

A hand-truck for supporting and transporting the load placed thereon includes a stowable handle. The stowable handle is positionable between a stowed position, a locked position and an infinite number of positions therebetween. The handle is accessible by a user at each position. The hand-truck can transport a load by hand and is accessible to be lifted by a forklift from any side.

A hand-truck for supporting and transporting the load placed thereon includes a stowable handle. The stowable handle is positionable between a stowed position, a locked position and an infinite number of positions therebetween. The handle is accessible by a user at each position. The hand-truck can transport a load by hand and is accessible to be lifted by a forklift from any side.

A pallet system includes a pallet body. The pallet body is formed from a first, independently formed first portion and a second blow molded second upper portion insert molded to the first portion. The pallet body may have two to eight recesses for forklift truck fork access. The second upper portion has a generally rectangular surface for carrying loads. The portions may have anti-skid properties, for example, a knurled topside surface or rubber coated bottom. At least one foot is attached to the second upper portion by insert molding. At least one runner may be attached to each foot to form part of the first portion. At least one stringer is attached to each runner to add further stability to the pallet. The runners and feet have channels or protruding members to effectively mate with the second upper portion. The system may also have top cap and tie members to affix the cap to one or more pallet bodies as well as high-friction inserts to permit the pallet from sliding on a surface or objects from sliding on the pallet.

The power generator unit includes a container having a peripheral wall enclosing a power generating motor assembly. A breaker box is provided in an opening in the peripheral wall of the container, so as to have power outlet socket connectors accessible from outside of the container. An external electric circuit to be fed with electricity can be operatively connected to the power outlet socket connectors. Power inlet socket connectors are also provided in the breaker box, accessible from inside the container, to which the power generating motor assembly can be operatively and releasably connected. A breaker links the power inlet socket connectors to the power outlet socket connectors, to open the breaker box circuit should any excessive power demand occur. The breaker box is releasably bolted to the peripheral wall of the container, about the opening in which it is inserted. A pair of spaced-apart pockets are provided on the breaker box casing, being outwardly opened. Forks of a forklift truck can engage these pockets, to hold and carry the breaker box when removal or installation of the breaker box occurs.

The invention relates to a forklift hydraulic system matched with multi-functional wet brakes. The system comprises an oil pump, a preferred diverter valve, an integrated valve block, an energy accumulator, a power brake valve, a parking brake, a service brake and an oil tank, wherein the oil outlet of the oil pump is communicated with a port P of the preferred diverter valve; the preferred diverter valve is provided with an inlet and three outlets, wherein the first outlet is divided into two paths, one path is communicated with a port P1 of the integrated valve block, and the other path is communicated with a port Pz of the power brake valve; the second outlet is communicated with an oil circuit of a forklift operating device; the third outlet is divided into two paths, one path is communicated with a forklift steering system, and the other path is communicated with a port P2 of the integrated valve block; and the integrated valve block comprises a parking brake electromagnetic valve, a one-way valve, a lock / release electromagnetic valve, a one-way valve, and the like. In the invention, the preferred diverter valve is used for diverting, and the problem of oil sources for wet bridge parking braking and service braking can be solved without providing another set of oil source, so that an operating hydraulic system and a brake system are integrated into an organic whole, thereby simplifying the piping system and reducing the cost.