Herringbone ladder with height adjusting function

Abstract

The invention provides a herringbone ladder with a height adjusting function. The herringbone ladder comprises a left ladder rack and a right ladder rack, wherein the upper end of the left ladder rackand the upper end of the right ladder rack are hinged through a first hinged part, a side ladder is slidably connected to the left side of the left ladder rack through a sliding mechanism, the two sides of the upper end of the left ladder rack are each rotationally connected with a first positioning screw, and the two sides of the lower end of the side ladder are each rotationally connected witha second positioning screw. The left ladder rack, the right ladder rack and an adjusting mechanism are arranged, and an adjusting screw rod in the adjusting mechanism in the middle of the opposite sides of the left ladder rack and the right ladder rack is in threaded connection with a first sleeve and a second sleeve; a handle is rotated to screw the adjusting screw rod into the first sleeve and the second sleeve so that the included angle between the left ladder rack and the right ladder rack can be reduced, and the supporting height of the left ladder rack and the right ladder rack can be increased; and the adjusting screw rod is in threaded connection with the first sleeve and the second sleeve, the stability between the left ladder rack and the right ladder rack is enhanced, and the use safety is improved.

Description

technical field [0001] The invention relates to the technical field of ladders, in particular to a ladder with a height adjustment function. Background technique [0002] The herringbone ladder is a kind of climbing tool used for work on the space above the plane, such as roof decoration. The herringbone ladder is a tool often used in the field of decoration. It includes a main ladder and an auxiliary ladder hinged with the main ladder. When in use, the operator separates the lower part of the main ladder from the auxiliary ladder and places it on the On the ground, the operator can then stand on the ladder bar of the main ladder or the auxiliary ladder to work. [0003] There are still certain limitations in the use of the ladder ladders in the prior art. For example, the ladder ladders sold and used on the market cannot adjust the angle of support according to the needs, and there is a causal relationship between the angle of support and the height. The larger the angle ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art proposed in the above-mentioned background technology, the present invention provides a ladder with a height adjustment function, which has the advantages of easy adjustment of the support angle height and wide application range, and solves the inconvenience of angle height adjustment and the application range small problem

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