Trolley

Abstract

Disclosed is a trolley, comprising a height-adjustable trolley frame, the trolley frame comprising an upper frame, a lower frame, a support mechanism, a lifting / lowering adjustment member and a lifting / lowering adjustment unlocking member. The support mechanism comprises a first support and a second support pivotally connected to each other, and the pivoting of the first support and the second support relative to each other enables the upper frame to be lifted or lowered. The lifting / lowering adjustment member is slidably arranged on the upper frame and is switchable between a locked state and an unlocked state. The lifting / lowering adjustment unlocking member is configured to be operable to switch the lifting / lowering adjustment member from the locked state to the unlocked state. One of the first support and the second support is pivotably connected to the lifting / lowering adjustment member, and the other of the first support and the second support is pivotably connected to the upper frame. When the lifting / lowering adjustment member is in the locked state, the sliding of the lifting / lowering adjustment member relative to the upper frame is prevented, and when the lifting / lowering adjustment member is in the unlocked state, the sliding of the lifting / lowering adjustment member relative to the upper frame is allowed.

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