Ladder working platform with locking structure and combined ladder thereof

Abstract

The invention provides a ladder working platform with a locking structure and a combined ladder thereof, belonging to a ladder which can be changed into a platform and relating to a working platform which can realize locking when being arranged on a ladder and the ladder thereof. The combined ladder comprises ladder units and the ladder working platform, wherein the ladder units are hinged by virtue of hinges to form the ladder which can be changed into the platform; each ladder unit is provided with two ladder frames which are mutually parallel, a horizontal roller forming a ladder step is arranged between the two ladder frames, and the ladder frame end part of the ladder unit is provided with a ladder frame assembling end; and a space is kept between the outer frame of the ladder frame and an assembling hole of the horizontal roller to form a ladder unit rabbet which can contain the ladder working platform. The ladder working platform comprises a platform body which can be arranged on the ladder, wherein the platform body is provided with a first side wall and a second side wall, the side wall can form an assembling seam allowance combined with the ladder units; and a limit wallis arranged at one side of the platform body, and a bolt column through hole which can cause a movable bolt to move up and down is arranged adjacent to the limit wall. By adopting the technical scheme, the process can be effectively optimized, and the manufacturing cost can be reduced.

Description

technical field [0001] This case belongs to the category of ladders that can be turned into platforms in the field of ladders, and involves working platforms and ladders that can be locked on the ladders. Background technique [0002] For mature industrial technologies such as ladders, the audience is more pursuing the improvement of product details, although the improvement of details is more difficult. [0003] The industry expects that the structure of the ladder's components will not only be stronger, but also lighter. Not only will the ladder be more stable, the safety performance will be better, and the manufacturing cost will be lower, so as to improve market competitiveness. [0004] Known ladder that can be transformed into platform, as disclosed Chinese patent 97203058.1-a kind of combined ladder work platform, wherein introduced the measure that this type of ladder combines with work platform; Another example is disclosed Chinese patent 99214289-a A cross-board u...

AI Technical Summary

Problems solved by technology

[0006] Although this kind of ladder can be stacked and stored, it is only suitable for the working platform and cannot be used as an upright single ladder or other deformations. Of course, the combination of the platform and the ladder is not suitable for the combination ladder mentioned in this case.

[0007] The known Chinese patent 97203058.1 combined ladder working platform has a structure that makes the manufacturing process not simple enough, and the manufacturing cost is difficult to reduce; another example is the cross-board used in the Chinese patent 99214289, which is used with a folding ladder. Stable requirements, the manufacturing process is not optimized, and it is even more difficult to meet the requirements of light weight and stability. Obviously, the advantages of industrialized batch manufacturing are insufficient

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