Stair-climbing draw-bar box with caterpillar band

Abstract

The invention discloses a stair-climbing draw-bar box with a caterpillar band, which comprises a box body; a draw bar, a fixed handle, and an additional handle are disposed on the box body; two bearing plates are respectively disposed at the two sides of the back side of the box body; a groove is disposed on the bearing plate; a stair-climbing device is disposed in the groove; the stair-climbing device comprises four connecting benches which are arranged linearly; adjacent two connecting benches are connected by a connecting rod; the connecting benches at the end parts are engaged with the bearing plates; a pulley is disposed on each connecting bench; and a caterpillar band is disposed outside the four pulleys which are as an integral body. During using, when a step is encountered, the draw bar is retracted; the additional handle is drawn out; the connecting benches are turned to allow the pulleys and the caterpillar bands to contact the ground; during stair climbing, only the additional handle is drawn; the draw-bar box is attached slantwise to the inclined plane of the stair steps, and is supported and driven by the two caterpillar bands; after stair climbing, the additional handle is retracted; the connecting benches are recovered to allow the pulleys and the caterpillar bands to retract and to be tightly attached to the bearing plates. The invention has the advantages of flexible usage, good effect, labor saving and the like.

Description

technical field [0001] The invention relates to a stair-climbable trolley case with crawlers. Background technique [0002] The bottom of the trolley case in the prior art is provided with wheels and has a retractable pull rod, which is convenient for walking on flat ground. However, when going up and down stairs, people are often helpless and can only carry or drag the trolley case up and down the stairs, which is very inconvenient. . Contents of the invention [0003] Aiming at the above-mentioned prior art, the present invention provides a stair-climbable trolley case with crawlers. [0004] The present invention is achieved through the following technical solutions: [0005] A stair-climbable trolley box with crawler tracks, including a box body, a pull rod, a fixed handle and an additional handle are arranged on the upper part of the box body, a load-bearing plate is provided on both sides of the back of the box body, and grooves are arranged on the load-bearing pla...

AI Technical Summary

Problems solved by technology

[0002] The bottom of the trolley case in the prior art is provided with wheels and has a retractable pull rod, which is convenient for walking on flat ground. However, when going up and down stairs, people are often helpless and can only carry or drag the trolley case up and down the stairs, which is very inconvenient.

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