초록 ▼

A lifting trolley having a main frame supported on ground engaging wheels, a handle pivotally connected to the main frame and a lifting sub-frame which is vertically movable with respect to the main frame is disclosed. The sub-frame has a pair of spaced apart arms, each of which include retractable

A lifting trolley having a main frame supported on ground engaging wheels, a handle pivotally connected to the main frame and a lifting sub-frame which is vertically movable with respect to the main frame is disclosed. The sub-frame has a pair of spaced apart arms, each of which include retractable engagement means in the form of pivoting catch members that are adapted to secure a load, such as a stack of crates, to the sub-frame. Linkage means, such as a pulley and cable assembly between the handle and sub-frame, enabling pivotal movement of the handle to cause vertical movement of the sub-frame with respect to the main frame is also disclosed. The trolley includes releasable catch means, such as a first catch assembly between the handle and the main frame and a second catch assembly between the sub-frame and the main frame that is adapted to lock the sub-frame to the main frame, so that only upon release of the catch means and the pivotal movement of the handle may the sub-frame be raised or lowered to a desired height.

대표청구항 ▼

A lifting trolley comprising: a main frame supported on ground engaging wheels; a handle pivotally connected to the main frame; a lifting sub-frame vertically movable with respect to the main frame along a vertical track of an upstand frame portion of the main frame; the sub-frame including a first

A lifting trolley comprising: a main frame supported on ground engaging wheels; a handle pivotally connected to the main frame; a lifting sub-frame vertically movable with respect to the main frame along a vertical track of an upstand frame portion of the main frame; the sub-frame including a first pair of spaced apart arms, each arm including engagement means for securing a load to the sub-frame; linkage means operatively connecting the handle with the sub-frame for vertically moving said sub-frame, for translating pivotal movement of the handle into vertical movement of the sub-frame with respect to the main frame; and releasable catch means for locking the sub-frame to the main frame, wherein the releasable catch means includes a first releasable catch assembly for locking the handle to the main frame at a first height of the sub-frame for enabling the engagement means to engage a load located on the ground, and a second releasable catch assembly for locking the sub-frame to the main frame at a second height of the sub-frame for transporting the load on the trolley, the first releasable catch assembly including a first spring mounted latch pivotally mounted on the upstand frame portion and a first pin extending from the handle, the first pin being engaged by the first latch so as to lock the handle in an upright orientation to the main frame, and the second releasable catch assembly including a second spring mounted latch pivotally mounted on the sub-frame and a second pin extending from the upstand frame portion, the second pin being engaged by the second latch so as to lock the sub-frame to the main frame, and wherein said linkage means operatively connects the handle with said sub-frame, whereby pivoting the handle in a first pivotal direction raises the sub-frame, correspondingly raising the load, to the second height where the second releasable catch assembly locks the sub-frame to the main frame, and further, pivoting the handle in a second pivotal direction lowers the sub-frame, correspondingly lowering the load, to said first height for disengaging the load from the engagement means.