Multipurpose folding ladder

Abstract

The utility model relates to a multipurpose folding ladder which comprises two ladder keels which are symmetrical left and right, N first limiting rods and N second limiting rods are fixedly installed between the two ladder keels, and N pedals are further hinged between the two ladder keels. When the multipurpose folding ladder is used as a ladder, the back surfaces of the pedals abut against the top ends of the first limiting rods; when the multipurpose folding ladder is used as a springboard, the front surfaces of the pedals are propped against the front surfaces of the second limiting rods. The multipurpose folding ladder has the beneficial effects that the structure is simple, the function change operation is convenient, the pedals can be folded for storage, and the storage and transportation space is reduced.

Description

Technical Field

[0001] The utility model relates to the field of engineering construction tools, in particular to a multi-purpose folding ladder. Background Art

[0002] The construction site environment is complex. Some edge openings need to be temporarily crossed, which requires the use of a flat springboard; some sump pits and high-low span floors need to be climbed, which generally require the use of ladders and running boards; the traditional practice is to use a fixed-size single-sided ladder or a herringbone ladder, which can only meet a small number of climbing needs, and such a ladder has a single function. Therefore, a multi-purpose folding ladder that can be used as both a springboard and a ladder at the construction site is needed. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a multi-purpose folding ladder.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A multi-purpose folding ladder comprises two left-right symmetrical ladder keels, N first limiting rods with the same spacing distance and N second limiting rods with the same spacing distance are fixedly installed between the two ladder keels, and N pedals with the same spacing distance are also hinged between the two ladder keels; when the multi-purpose folding ladder is used as a ladder, the back of the pedal abuts against the top of the first limiting rod; when the multi-purpose folding ladder is used as a springboard, the front of the pedal abuts against the front of the second limiting rod.

[0006] The top of the ladder keel is provided with a socket column extending along the axial direction of the ladder keel, and the bottom of the ladder keel is provided with a socket slot concave along the axial direction of the ladder keel. The socket column at the top of one multi-purpose folding ladder is inserted into the socket slot at the bottom of another multi-purpose folding ladder, so that two adjacent multi-purpose folding ladders are spliced.

[0007] Wherein, a manual bolt is screwed on the ladder keel on one side of the socket, and a round hole for inserting the tail of the manual bolt is opened on one side of the socket column.

[0008] Wherein, a long strip-shaped receiving groove for receiving the first limiting rod is arranged on the back side of the pedal.

[0009] The pedal is hinged to the ladder keel through a half-thread bolt, the half-thread bolt is screwed on the ladder keel, a hinge hole is respectively provided on both sides of the pedal, and the tail of the half-thread bolt is inserted into the hinge hole.

[0010] Wherein, the back surface of the second limiting rod is flush with the back surface of the ladder keel, and the sum of the thickness of the second limiting rod and the thickness of the pedal is equal to the thickness of the ladder keel.

[0011] The beneficial effects of the present utility model are as follows: When the ladder keel is leaned against the side wall of a building or a foundation pit, the back surface of the pedal abuts against the first limiting rod, so that the multi-purpose folding ladder is used as a ladder; When the two ends of the ladder keel are respectively placed on two supports, the front surface of the pedal abuts against the second limiting rod, so that the multi-purpose folding ladder is used as a gangplank; The structure of the multi-purpose folding ladder is simple, the function change operation is convenient, and the pedal can be folded and stored, reducing the storage and transportation space. Description of the Drawings

[0012] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0013] Figure 1 is a schematic structural diagram of the multi-purpose folding ladder of the present utility model when used as a ladder;

[0014] Figure 2 is a schematic structural diagram of the multi-purpose folding ladder of the present utility model when used as a gangplank;

[0015] Figure 3 is a schematic structural diagram of the combination of the ladder keel, the first limiting rod and the second limiting rod of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the back surface of the pedal of the present utility model;

[0017] The label description in the figure: ladder keel 1, socket column 11, round hole 111, socket slot 12, first limiting rod 2, second limiting rod 3, pedal 4, receiving groove 41, hinge hole 42, manual bolt 5, half-thread bolt 6. Detailed Embodiments

[0018] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0019] As Figures 1 to 4 shown, a multi-purpose folding ladder includes two symmetrically arranged ladder keels 1 on the left and right. Four first limiting rods 2 with the same spacing and four second limiting rods 3 with the same spacing are fixedly installed between the two ladder keels 1. Four pedals 4 with the same spacing are also hinged between the two ladder keels 1. The pedals 4 and the ladder keels 1 are hinged by half-thread bolts 6. The half-thread bolts 6 are screwed on the ladder keels 1. A hinge hole 42 is respectively opened on both sides of the pedal 4, and the tail of the half-thread bolt 6 is inserted into the hinge hole 42.

[0020] When the multi-purpose folding ladder is used as a ladder, the back surface of the pedal 4 abuts against the top end of the first limiting rod 2; when the multi-purpose folding ladder is used as a springboard, the front surface of the pedal 4 abuts against the front surface of the second limiting rod 3.

[0021] In order to enable the pedal 4 to be completely located between the two ladder keels when being stored, a long strip-shaped receiving groove 41 for receiving the first limiting rod is arranged on the back surface of the pedal 4.

[0022] The back surface of the second limiting rod 3 is flush with the back surface of the ladder keel 1, and the sum of the thickness of the second limiting rod 3 and the thickness of the pedal 4 is equal to the thickness of the ladder keel 1, so as to ensure the flatness of the multi-purpose folding ladder in the stored state and facilitate stacking.

[0023] When the ladder keel is leaned against the side wall of a building or a foundation pit, the back surface of the pedal abuts against the first limiting rod, so as to use the multi-purpose folding ladder as a ladder; when the two ends of the ladder keel are respectively placed on two supports, the front surface of the pedal abuts against the second limiting rod, so as to use the multi-purpose folding ladder as a springboard; the multi-purpose folding ladder has a simple structure, convenient operation for function change, and the pedal can be folded and stored, reducing the storage and transportation space.

[0024] When the length of a single multi-purpose folding ladder cannot meet the use requirements, two or more multi-purpose folding ladders can be spliced for use. The specific structure is as follows:

[0025] A socket column 11 extending along the axial direction of the ladder keel 1 is arranged at the top of the ladder keel 1, and a socket groove 12 recessed axially along the ladder keel 1 is arranged at the bottom of the ladder keel 1. The socket column 11 at the top of one multi-purpose folding ladder is inserted into the socket groove 12 at the bottom of another multi-purpose folding ladder, so that adjacent two multi-purpose folding ladders are spliced.

[0026] In order to prevent the socket column 11 from slipping out of the socket groove 12, a manual bolt 5 is screwed on the ladder keel on one side of the socket groove 12, and a round hole 111 for the tail of the manual bolt 5 to insert is arranged on one side of the socket column 11.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A multi-purpose folding ladder, characterized in that: It includes two symmetrically arranged ladder keels left and right. Between the two ladder keels, N first limiting rods with the same spacing distance and N second limiting rods with the same spacing distance are fixedly installed. Between the two ladder keels, N pedals with the same spacing distance are also hinged; when the multi-purpose folding ladder is used as a ladder, the back of the pedal abuts against the top of the first limiting rod; when the multi-purpose folding ladder is used as a springboard, the front of the pedal abuts against the front of the second limiting rod.

2. The multi-purpose folding ladder according to claim 1, wherein: At the top of the ladder keel, there is an insertion column extending along the axial direction of the ladder keel. At the bottom of the ladder keel, there is an insertion slot recessed along the axial direction of the ladder keel. The insertion column at the top of a pair of multi-purpose folding ladders is inserted into the insertion slot at the bottom of another pair of multi-purpose folding ladders, so that adjacent pairs of multi-purpose folding ladders are spliced.

3. The multi-purpose folding ladder according to claim 2, wherein: A manual bolt is screwed on the ladder keel on one side of the insertion slot. A round hole for the tail of the manual bolt to insert is opened on one side of the insertion column.

4. The multi-purpose folding ladder according to claim 1, characterized in that: On the back of the pedal, there is a long strip-shaped receiving groove for receiving the first limiting rod.

5. The multi-purpose folding ladder according to claim 1, characterized in that: The pedal and the ladder keel are hinged by a half-thread bolt. The half-thread bolt is screwed on the ladder keel. One hinge hole is opened on each side of the pedal. The tail of the half-thread bolt is inserted into the hinge hole.

6. The multi-purpose folding ladder according to claim 1, characterized in that: The back of the second limiting rod is flush with the back of the ladder keel. The sum of the thickness of the second limiting rod and the thickness of the pedal is equal to the thickness of the ladder keel.

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