TWM542065U - Height-adjustable foldable step ladder - Google Patents

Description

Folding ladder with height change

This creation is about a kind of ladder, and more specifically about a folding ladder that can change the height.

The applicant's hot dip galvanizing line annealing furnace bottom cover is about 2.7 meters above the ground, and the height of the bottom of the furnace for personnel and equipment is only about 2 meters. When a person wants to enter the bottom of the furnace for inspection and maintenance, if the A-type ladder or the telescopic ladder is used for climbing, the stability of the ladder is poor, and there is no handrail next to it. When the operator climbs the ladder with the tool and equipment, it is easy to have The risk of falling. If the lifting platform is used for ascending, because it is a power equipment, the lift must be disconnected after reaching the positioning, and the operator can use it. If you want to change the working height or moving position of the lifting platform, you must re-energy, and it needs special personnel to operate. It is not very convenient to use. If the frame is used for climbing, it will increase the cost of production and the mobility will be insufficient.

Therefore, only safe ladders with handrails can meet the needs, but it is necessary to be able to adjust the height in order to smoothly enter and exit the furnace bottom.

This creation then proposes a solution to solve the above problems.

The purpose of this creation is to provide a folding ladder that can be changed in height.

In order to achieve the above purpose, the foldable ladder of the present invention can include: a first stepped ladder having a plurality of pedals; a platform disposed at the top of the first step; and a second step having a second step A plurality of pedals, one end of the bottom of the second step is pivotally connected to a front edge of the platform, wherein the second step can be rotated below the platform and can be turned up above the platform.

According to the foldable ladder of the present invention, when the second step of the upper half is folded, the height of the entire ladder is lowered, and the furnace bottom can be smoothly accessed. When the second step is turned up and fixed, the height of the entire ladder is increased, and the operator can enter the furnace for maintenance. In addition, the heights of the first step and the second step can be designed according to the actual working environment.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the following detailed description will be made in conjunction with the accompanying drawings. In the description of the present invention, the same components are denoted by the same reference numerals and will be described above.

Referring to FIGS. 1 and 2, the variable height folding ladder of the present invention comprises a first walking ladder 110, a second walking ladder 120, a platform 130, two telescopic railings 140, a movable supporting rod 150 and a Base 190.

The first step 110 includes a plurality of pedals and is erected on the base 190 with a plurality of support bars. The platform 130 is disposed at the top end of the first ladder 110. The second step 120 includes a plurality of pedals, and one end of the bottom of the second step 120 is pivotally connected to the front edge of the platform 130. The second step 120 can be rotated below the platform 130 (see Figure 1) and can also be raised above the platform 130 (see Figure 2). When the second step 120 is turned over the platform 130, the movable support bar 150 can be inserted under the second step 120 to prevent it from falling over. In order to facilitate the movement of the creation ladder, a plurality of wheels 192 are disposed under the base 190, and the two wheels 192 have a steering and braking function for movement and positioning. The two telescopic railings 140 are respectively disposed on both sides of the platform 130, and can be erected according to actual use conditions.

According to the creation of the height-changeable folding ladder, the person can step on the platform 130 on the pedal on the first step 110. When the telescopic railing 140 is raised, it can prevent accidental fall. When the second step 120 is raised above the platform 130 and fixed by the movable support bar 150, the personnel can step on the upper step on the pedal on the second step 120.

According to the creation of the height-changeable folding ladder, when the second step 120 of the upper half is folded, the height of the entire ladder is lowered, and the furnace bottom can be smoothly accessed. When the second step 120 is turned up and fixed, the height of the entire ladder is increased, and the operator can enter the furnace for maintenance.

According to the creation of the height-changeable folding ladder, the heights of the first step 110 and the second step 120 can be designed according to the height of the actual working environment.

Although the present invention has been disclosed in the foregoing examples, it is not intended to limit the present invention, and any one of ordinary skill in the art to which the present invention pertains can be modified and modified without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

110‧‧‧First step
120‧‧‧Second ladder
130‧‧‧ platform
140‧‧‧Retractable railings
150‧‧‧ activity support rod
190‧‧‧Base
192‧‧ wheels

Figure 1 is a perspective view of the foldable ladder of the changeable height of the present invention, wherein the second step of the upper half is turned to the lower side of the platform. Fig. 2 is a perspective view of the foldable ladder of the changeable height of the present invention, wherein the second step ladder has been turned up and fixed.

110‧‧‧First step

120‧‧‧Second ladder

130‧‧‧ platform

140‧‧‧Retractable railings

150‧‧‧ activity support rod

190‧‧‧Base

192‧‧ wheels

Claims (6)

A foldable ladder capable of changing height comprises: a first step ladder having a plurality of pedals; a platform disposed at a top end of the first step ladder; and a second step ladder having a plurality of pedals, the first step One end of the bottom of the ladder is pivotally connected to the front edge of the platform, wherein the second ladder can be rotated below the platform and can be turned up above the platform. The foldable ladder of the height changeable according to claim 1, further comprising a movable support rod, wherein when the second step is turned up, the movable support rod can be inserted into the second step Below to prevent the second step from falling over. The foldable ladder of the height changeable according to the first aspect of the patent application includes two telescopic railings respectively disposed on two sides of the platform, and the two telescopic railings can be erected according to actual use conditions. The foldable ladder of the height changeable according to claim 1, further comprising a base, wherein the first step ladder is disposed on the base. The foldable ladder of the height changeable as described in claim 4 of the patent application further includes a plurality of wheels disposed below the base. The foldable step of a height changeable according to claim 5, wherein two of the plurality of wheels have a steering and braking function.