摘要:
A pair of lift columns telescopically contain a companion pair of tubular runners and a companion pair of fluid powered linear actuators to reciprocate the runners. The actuator circuit includes a flow divider with a pair of idler rotors keyed together for co-rotation in directions induced by the direction of fluid flow. The runners support a load platform with companion linkage systems, each with a flexible member between a rear portion of an outer platform section and an upper end connected to an inside face of the companion runner. Clearance is provided between the inside face of each runner and the companion side of the platform to receive the companion linkage system in a fully recessed condition when the platform is folded into a storage position. Coacting parts on each of the platform sides and the corresponding runner are interengageable and disengageable such that they are mutually engaged when the platform is in a load-bearing position. Each runner is fitted with upper and lower concave rollers having self-centering engagement with a pair of vertically elongate convex guide tracks fitted within the corresponding column.
摘要:
The present invention provides folding assisting arm assembly for lift gates. In one embodiment, the folding assisting arm assembly comprises a folding assisting apparatus for a lift gate having a platform with a foldable section. The apparatus comprises an elongated arm, and a pivot axle, wherein a proximal end of the elongated arm is pivotably mounted on the pivot axle. The apparatus further comprises a spring for spring loading the elongated arm. When the folding assisting apparatus is mounted on the lift gate proximate the platform, a biasing tension in the spring urges a distal end of the elongated arm on the foldable section of the lift platform during a portion of movement of the lift platform to maintain the foldable section folded.
摘要:
A lift gate system includes a lift gate assembly comprising an actuator system for actuating a lift gate, an interface device for receiving lift gate operation information from an operator, and a main controller device comprising a solid state relay switch for controlling electrical power to the actuator system. The main controller device further includes a microcontroller configured for determining that one or more conditions are satisfied, and upon satisfaction of said one or more conditions, then controlling the actuator system via the solid state relay switch based on the received information from the operator for controlling operation of the lift gate assembly accordingly.
摘要:
A method and apparatus for selectively activating a power down mode of a hydraulic system during operation of a lift gate. An electronic control circuit is added to hydraulic control circuitry and is configured to selectively interrupt the gravity down mode or power down mode of operation of the hydraulic system based on either a manual input (override) or a sensed condition and switch to the other mode of operation.
摘要:
The present invention provides a modular extension device and method for mounting the modular extension device on a vehicle, such as a truck. The modular extension plate device comprises an extension plate, a left extender bracket, and potentially a right extender bracket, that when coupled together form an extension assembly. The extension plate further comprises an elongated rectangular plate having an essentially L-shaped profile, a left substantially triangle-shaped support member, a right substantially triangle-shaped support member, a left essentially L-shaped support member and a right essentially L-shaped support member. The modular extension assembly can be coupled adjacent to the rear edge of a vehicle bed for extending the depth of the vehicle bed.
摘要:
A lifting system includes a vertically extending parallel pair of fixedly spaced apart guide surfaces, a linear actuator suspended vertically between said pair of guide surfaces, a vertically elongate runner member having a pivotal connection to a lower end of said linear actuator to be vertically reciprocated by said actuator, a load bearing member at a lower end of said runner member at a location spaced downwardly from said pivotal connection and a vertically spaced apart pair of sliding contact members on said runner member for relatively slidable contact with said pair of guide surfaces during vertical reciprocation of said runner member by said actuator. Each of said contact members comprises a projecting contact pad having a concave surface for slidable contact with one of said guide surfaces.
摘要:
A roll stop system for a lift includes a roll stop member that is movable between a raised position and a lowered position, a driving mechanism for moving the roll stop member between the raised position and the lowered position, and a spring member acting as a buffer between the driving mechanism and the roll stop member, and preferably the spring member protects the driving mechanism from damage due to abnormal operations of the roll stop member.
摘要:
A lift having a platform with a substantially level ride is described. The lift reduces the distance between the ground and the platform in the ground position. An extension plate having receiving portions for accommodating portions of the lift when the platform is in a bed level position.
摘要:
A method and apparatus for selectively activating a power down mode of a hydraulic system during operation of a lift gate. An electronic control circuit is added to hydraulic control circuitry and is configured to selectively interrupt the gravity down mode or power down mode of operation of the hydraulic system based on either a manual input (override) or a sensed condition and switch to the other mode of operation.