A jacking tool capable of achieving up-down fine adjustment is provided, and belongs to the technical field of jacking tools. The jacking tool includes a fixed portion and a lifting portion; the fixed portion includes a base and a guide rod arranged on the base; the lifting portion is provided with a lifting plate, a climbing mechanism, and an adjustment grip for controlling the climbing mechanism; the adjustment grip is pressed to actuate the climbing mechanism, to control the lifting portion and the lifting plate to move up along the guide rod; the lifting portion is further provided with a locking mechanism clamped to the guide rod; the locking mechanism restricts the lifting portion from moving down; the lifting plate is slidably arranged on the lifting portion.

A pulley wheel support frame having a ring-shaped support rim having a top surface adapted to support a horizontal pulley wheel, said ring-shaped support rim being coupled, on a bottom side, to an opening adapted to receive a ram or a saddle of a jack; a base; and three or more height-adjustable support columns coupling the base to the ring-shaped support rim, said height-adjustable support columns each being fixable at a plurality of different heights.

A pulley wheel support frame having a ring-shaped support rim having a top surface adapted to support a horizontal pulley wheel, said ring-shaped support rim being coupled, on a bottom side, to an opening adapted to receive a ram or a saddle of a jack; a base; and three or more height-adjustable support columns coupling the base to the ring-shaped support rim, said height-adjustable support columns each being fixable at a plurality of different heights.

A jack support apparatus has an outer tube having an outer tube body with an outwardly-extending outer tube jack cradle and an opposite outer tube opening, an inner tube having an inner tube body with a plurality of spaced-apart inner tube holes and an outwardly-extending inner tube jack cradle, the inner tube body slidably received within the outer tube body through the outer tube opening, the outer and inner tube jack cradles configured to each selectively engage one of the wheel axle and the cup axle of the jack, and a pin operable through an outer tube hole for selectively engaging any of the plurality of inner tube holes.

A jack support apparatus has an outer tube having an outer tube body with an outwardly-extending outer tube jack cradle and an opposite outer tube opening, an inner tube having an inner tube body with a plurality of spaced-apart inner tube holes and an outwardly-extending inner tube jack cradle, the inner tube body slidably received within the outer tube body through the outer tube opening, the outer and inner tube jack cradles configured to each selectively engage one of the wheel axle and the cup axle of the jack, and a pin operable through an outer tube hole for selectively engaging any of the plurality of inner tube holes.

A lifting and lowering tool includes a foot configured to be supported on a surface, a bar extending therefrom, and a movable assembly including a housing, a movable platform shaped to support a load that extends from the housing, a lifting actuator configured to incrementally move the movable assembly along the bar away from the foot, a lowering actuator configured to incrementally move the movable assembly along the bar towards the foot, and a release actuator configured to disengage the movable assembly from the bar to allow free movement of the movable assembly along the bar. In embodiments, the movable assembly engages the bar through locking plates that extend through a flange of the movable assembly. In embodiments the release actuator is spaced from the lifting actuator and the lowering actuator to prevent inadvertent actuation of the release actuator. In embodiments a flange of the movable assembly surrounds the bar.

A lifting and lowering tool includes a foot configured to be supported on a surface, a bar extending therefrom, and a movable assembly including a housing, a movable platform shaped to support a load that extends from the housing, a lifting actuator configured to incrementally move the movable assembly along the bar away from the foot, a lowering actuator configured to incrementally move the movable assembly along the bar towards the foot, and a release actuator configured to disengage the movable assembly from the bar to allow free movement of the movable assembly along the bar. In embodiments, the movable assembly engages the bar through locking plates that extend through a flange of the movable assembly. In embodiments the release actuator is spaced from the lifting actuator and the lowering actuator to prevent inadvertent actuation of the release actuator. In embodiments a flange of the movable assembly surrounds the bar.

A jack includes a main body with a cavity. A lifting cylinder is supported on the main body and is extendable into the cavity. A lock is movably coupled to the main body. A spring is coupled to the lock and biases the lock into the cavity. A cylinder is coupled to the lock and biases the lock out of the cavity against the biasing force of the spring.

A lifting clamp is provided, comprising a sliding rail, an abutment device that is arranged to be displaceable on the sliding rail, having at least one abutment element for a workpiece, wherein an axis of displacement of the abutment device on the sliding rail is parallel to a direction of spacing between a stand arrangement and the at least one abutment element, a first movement mechanism having a pushing device, having an actuation lever that is coupled to the pushing device to bring about a lifting function of the lifting clamp, a second movement mechanism with a lowering lever to bring about a lowering function, and a third movement mechanism with a release lever for freeing the displaceability of the at least one abutment device on the sliding rail. The lowering lever and/or the release lever is positioned between the actuation lever and the counter-element.

A lifting clamp is provided, comprising a sliding rail, an abutment device that is arranged to be displaceable on the sliding rail, having at least one abutment element for a workpiece, wherein an axis of displacement of the abutment device on the sliding rail is parallel to a direction of spacing between a stand arrangement and the at least one abutment element, a first movement mechanism having a pushing device, having an actuation lever that is coupled to the pushing device to bring about a lifting function of the lifting clamp, a second movement mechanism with a lowering lever to bring about a lowering function, and a third movement mechanism with a release lever for freeing the displaceability of the at least one abutment device on the sliding rail. The lowering lever and/or the release lever is positioned between the actuation lever and the counter-element.