CN2312318Y - Portable ladder having platforms - Google Patents

Abstract

The utility model relates to a portable platform ladder which is composed of two single straight ladders whose top ends are hinged with each other, wherein, each single straight ladder comprises two sets of opposite ladder joints, ladder pedals and a positioning pin group. Each group of ladder joints is composed of a first ladder joint, a second ladder joint and a basic ladder joint. The ladder joints are provided with slide ways, sliding blocks and positioning holes. Each second ladder joint is provided with a lower positioning hole and an upper positioning hole, and the upper part of each second ladder joint is not provided with a slide way. The utility model has the advantage of multiple functions, and the utility model can be used as a Y-shaped ladder, a single straight ladder and a stepping platform. The utility model is convenient to carry and transport after shrunk gradually, and the working height of the utility model is adjustable.

Description

The portable stage ladder

The utility model relates to a kind of portable stage ladder, during mainly for indoor construction such as cotton covered wire, wall finishing and furred ceiling, but not only can make the usefulness that ladder but also bending scrunch paralell.

Existing portable ladder can only be made the usefulness of ladder, and its weak point is: purposes is single.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art and a kind of portable stage ladder of making the usefulness of ladder and paralell is provided.

The purpose of this utility model can reach by following measure: the utility model is made of two pages of hinged single straight ladders of top, single straight ladder comprises relative two groups of section of ladders, stile and alignment pin group, every group of section of ladder is made up of first section of ladder, second section of ladder and basic section of ladder, section of ladder has chute, slide block and locating hole, second section of ladder has following locating hole and last locating hole, and top does not have chute.

There is slotted hole at the stile both ends and is fixedly connected with spring location-plate with holes.

The alignment pin group comprises alignment pin, spring, pin button and pulling block, and the Kong Bingyu pin button that the spring location-plate is passed in alignment pin the inner is orthogonal and is fixedly connected in the pulling block, and the section of ladder locating hole can be stretched in the alignment pin outer end.

The drawing of accompanying drawing is described as follows:

Fig. 1 always schemes for the utility model, and expression is bent into the structure that scrunches platform;

Fig. 2 is the state that closes up of the present utility model,

Fig. 3 is the lateral view of Fig. 2;

Fig. 4 is the single-piece figure of a section of ladder;

Fig. 5 is the A-A profile of Fig. 4;

Fig. 6 partial sectional view that to be the alignment pin group be connected with section of ladder with stile;

Fig. 7 is the structure of the first and second section of ladder bendings.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing:

Every figure among Fig. 1-Fig. 3 all represents general structure of the present utility model.The utility model is made of two pages of identical single straight ladders 1 of structure, and the top has junction plate 2 and bolt fastener 3 that two pages of single straight ladders are hinged.Every page of single straight ladder is made up of the two opposite groups section of ladder, and every group of section of ladder comprises 4 two of first section of ladders, 5 two of second section of ladders and basic section of ladder more than 6 to constituting, and the basic section of ladder of present embodiment is five pairs, has stile 9 to link to each other between every pair of corresponding section of ladder.Locating hole 11 is arranged on each section of ladder.

Fig. 4 and Fig. 5 represent between adjacent section of ladder each other can be engaged and the structure of sliding, there is rectangle chute 7 inboard of each section of ladder, there is rectangular shaped slider 8 in the outside, the slide block 8 of a last section of ladder (seeing Fig. 5 two point picture dotted line) is stung mutually to be incorporated in the chute 7 with the chute 7 of next section of ladder and is slided up and down, and reaches the lifting of ladder.

Positioning clamping body when Fig. 6 represents to stretch between adjacent section of ladder, stile 9 is circle or square tube material, two ends are fixedly connected with holes 10 spring location-plate 19 respectively in it, and alignment pin 12 two ends penetrate respectively in spring location plate hole 10 and the corresponding section of ladder locating hole 11, and alignment pin has spring 13 outward.There is slotted hole 14 the stile below, the pin button 15 of packing in the slotted hole 14, and pin button 15 and alignment pin 12 are the orthogonal shape and are fixedly connected in the pulling block 16.During use, earlier the pin button 15 of below, stile two ends is relatively inwardly pulled, alignment pin 12 is contracted from the locating hole 11 of outside section of ladder, at this moment, adjacent section of ladder just can slide in chute 7 by slide block 8 and realize stretching between adjacent section of ladder.When treating that section of ladder is stretched to alignment pin and meets locating hole, alignment pin outwards ejects automatically and stretches in the locating hole, sees shown in Figure 6 to realize location and chucking between section of ladder.

Fig. 7 represents that the utility model is bent into the mechanism that scrunches paralell, and locating hole has the chute 7 on following locating hole 17 and last locating hole 18, the second section of ladder tops need remove (promptly not having chute) on second section of ladder 5.It is as follows to remove the position: top, diagram the right chute 20 all removes, and top, left side chute removes interlude 21.Like this, when alignment pin 12 by the first section of ladder locating hole 11 and when stretching into the following locating hole 17 of second section of ladder, the following end line of first section of ladder is that illustrated dotted line 22, the first section of ladders can not bending down.When alignment pin 12 by the first section of ladder locating hole 11 and when stretching into the last locating hole 18 of second section of ladder, the lower end of first section of ladder is that illustrated dotted line 23, the first section of ladders of going up are bent into paralell and see Fig. 1.Arrange platform plank 24 thereon, just be barricaded as and scrunch paralell.

The utility model contrast prior art has following advantage: a ladder to be used: during as double ladder, drag-line is drawn back and hitched in the lower end of two pages of section of ladder groups of Fig. 2, promptly become general double ladder; During as single straight ladder, unload bolt fastener 3, promptly become two single straight ladders with reference to figure 3; Be used as when scrunching platform, first section of ladder of every page of section of ladder is stretched, make alignment pin stretch to the last locating hole of second section of ladder and inwardly bending separately, fasten drag-line 26, first-class platform plank 24 and breaker bolt 25 get final product, this will bring great convenience for interior decoration processing such as wall finishing and furred ceilings.Be easy to carry and carry, after finishing using, pull the pin button successively, can be retracted to the contraction state of section of ladder step by step, make the height of whole platform ladder be no more than 1.2 meters, be convenient to entrucking and carry.Working depth is adjustable, owing to be that multiple step is telescopic, adjustable height that ladder reaches.

Claims (3)

1, a kind of portable stage ladder, it is characterized in that, the two page single straight ladders hinged by the top constitute, single straight ladder comprises relative two groups of section of ladders, stile and alignment pin group, every group of section of ladder is made up of first section of ladder, second section of ladder and basic section of ladder, section of ladder has chute, slide block and locating hole, and second section of ladder has following locating hole and last locating hole, and top does not have chute.

2, portable stage ladder according to claim 1 is characterized in that, there is slotted hole at the stile both ends and is fixedly connected with spring location-plate with holes.

3, portable stage ladder according to claim 1, it is characterized in that, the alignment pin group comprises alignment pin, spring, pin button and pulling block, and the Kong Bingyu pin button that the spring location-plate is passed in alignment pin the inner is orthogonal and is fixedly connected in the pulling block, and the section of ladder locating hole is stretched in the alignment pin outer end.

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