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Simple stair-climbing hand buggy

A technology of trolleys and pull rods, applied in the field of trolleys

Inactive Publication Date: 2015-10-14
张德海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no elevator on the ground floor to move items manually. Although the ratchet cart can go up and down the stairs, it is laborious to carry heavy items and is inconvenient to use

Method used

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  • Simple stair-climbing hand buggy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] When pulling the trolley (1) on flat ground (13), the two hand-drawn wheels (5) on the back will bear the load on the ground, and when steps (12) are encountered, the lower side of the triangular belt (7) will be stuck under the U-shaped groove track wheel Between (9) and the highest point of the step, the lower inner bearing (8) of the U-shaped groove can slide along the lower edge (7) of the triangular belt, so that the trolley continues to move forward, and now the oval track wheel (2) bears the load. When carrying heavy items, there may be only 1 to 3 bearings on the steps, and the needle bearing has stronger gravity, so it is selected. The outer diameter of the needle roller bearing is small, and the up and down fluctuation is small when sliding along the V-belt on the steps, which can reduce the vibration. The cross-section of the triangular belt is actually a trapezoid, and the bearing is more stable when sliding on it. The triangular belt has strong load-bearin...

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Abstract

The invention discloses a simple stair-climbing hand buggy, relates to a hand buggy capable of freely walking up and down stairs and belongs to a carrier. A common hand buggy cannot walk up and down stairs, and a ratchet wheel trolley cannot walk up and down stairs continuously and is not convenient to use. The hand buggy can walk up and down stairs conveniently. According to the hand buggy, the two sides of the common hand buggy are each additionally provided with a long oval track wheel; when the hand buggy is pulled on the ground, two wheels at the back of the hand buggy walk down to the ground and bear loads; when the hand buggy walks on stairs, the oval track wheels bear loads and slide along the stairs, and therefore the hand buggy can walk up and down stairs conveniently. The hand buggy is mainly used for transporting heavy articles by walking up and down stairs or transporting articles needing to be manually transported in scenic spots.

Description

technical field [0001] The invention relates to a trolley which can freely go up and down stairs, which belongs to a vehicle. Background technique [0002] Ordinary two-wheeled carts can only travel on flat roads when carrying items. The bottom floor without elevator building can only rely on manual work to carry items, and although the ratchet cart can go up and down the stairs, it is more laborious to carry heavy items and is inconvenient to use. The invention provides a transport tool that can be pulled and transported on flat roads, and can conveniently go up and down stairs. Contents of the invention [0003] The present invention adds a long oval track wheel (2) on both sides of the common handcart (1), and its long axis is parallel to the pull rod of the handcart, and is fixed with a support frame (3). The so-called track wheel is a "U" grooved metal rod, the opening is shaped outwards into a long ellipse, and a needle roller bearing (4) is installed in the U-sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62B5/02
Inventor 张德海
Owner 张德海
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