ES287856A1 - A rolling elevator apparatus (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A rolling hoisting apparatus comprising: a lifting head including a frame member; a support wheel mounted on the underside of said frame member; an opening extending vertically in said frame member; a lifting impeller cylinder vertically extending threaded at its lower end in said opening and whose geometric axis extends through the axis of rotation of said support wheel; a lift impeller plunger, movable vertically in said lifting drive cylinder; a vertically extending cylinder member surrounding said lifting drive cylinder and spaced from said lifting drive cylinder leaving an annular space or reservoir; a screw cap on the upper end of said lifting drive cylinder and in cooperative contact with the upper end of said cylinder member for maintaining said member or cylinder member mounted on said frame; a drill that extends vertically in said frame member; a pump cylinder threaded at its lower end in said bore; a cylindrical part inserted into said bore and held against the bottom of the bore by the lower end of said pump cylinder; in said insert, a check valve means misaligned with respect to the axes of said insert, to control the passage of fluid from said reservoir to said pump cylinder and from the pump cylinder to said lift actuator cylinder; passages in said frame member, connecting said valve means with said reservoir and said lifting drive cylinder; a pump piston slidably mounted on said pump cylinder; an elongate steering handle fixed to rotation at its lower end to said frame member; articulated linking means connecting the lower end of said steering handle to the upper end of said pump piston, whereby the vertical pumping movement of said steering handle effects a pumping movement of said pump piston; a spring that surrounds said pump cylinder and is connected to the upper end of said pump plunger, said force spring being sufficient to compensate or counteract the weight of the handle when acting through said pump plunger, and said means of articulated link; a disc member rotatably mounted in said frame below said insert, with its axis aligned with the axis of said insert; means extending from said disc member and can cooperate in contact with the check valve means controlling the passage of fluid from said pump cylinder to said reservoir; means for lifting said disk member causing said protruding means to open the check valve and allow the passage of fluid from said pump cylinder to said reservoir leaving said steering handle free; in said frame member, a passage connecting said lifting drive cylinder to said tank; in said passage, a discharge valve with two springs that keep said discharge valve closed; an opening through the surface of said frame communicating with said springs to allow the removal thereof; a removable closure that closes said opening; in said passage, a spring-loaded valve for regulating the flow rate of fluid through said passage; a lifting frame; means fixing the rear end of said lifting frame to the upper end of said lifting driving piston, said lifting frame including horizontally spaced and laterally extending forks, each of which is formed by a pair of opposite U-sections, laterally separated and having their upper wings connected to each other; reinforcing plates fixed to and extending vertically between the wings of each of said U-sections, and extend in an appreciable length, of the forks; a support roller fixed rotatably to the front end of each of the forks; and means for interconnecting said rollers with said lifting head, for rotating the rollers downwardly raising the rear end of the lifting frame due to the vertical movement of said lifting drive piston. (Machine-translation by Google Translate, not legally binding)