JPH04312691A - Ladder device - Google Patents

Abstract

PURPOSE:To have general-using efficiency and to facilitate operation by arranging rising and falling steps to provide connections to the upper and lower ends, and providing a stationary section fixing detachably and a detachable mounting section to the skeleton of a construction. CONSTITUTION:Rising and falling steps 3 are mounted alternately right and left to a plurality of hollow steel pipes 1 at appropriate intervals. After that, as a pipe joint, a pair of circular steel plates applicable to inside diameters of both ends of each of the pipes 1 are opposed to each other, and bolts are inserted into them. Then, an interval between the steel plates is widened to connect the pipes 1 to each other by adjusting the tightening of bolts. While, mounting members 2 constituted of U-shaped mounting member bodies 21, detachable mounting sections 23 and stationary sections 22 mounted to the pipes 1 in parallel with a building skeleton 10 are prepared. Hollow receiving members 11 are welded to an installation part of the building skeleton 10 side at a perpendicular and an appropriate interval in advance, and interlocking rods 23 of the mounting members 2 are inserted to interlock. In addition, the pipes 1 are fixed with clamps 22 of the mounting members 2 to use.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder device used at construction sites for high-rise buildings.

0002

2. Description of the Related Art At construction sites for high-rise structures such as buildings, steel frames are first assembled, and then various works are carried out one after another. The steel frame assembly work is performed by erecting pillars and then joining beams between the pillars.

[0003] When joining the beams and performing various subsequent operations, it is necessary for workers to ascend and descend along the assembled steel frames.

[0004] Conventionally, in order to ascend and descend the ladder, a ladder constructed according to the length of the place of use has been completely fixed to the pillar material by welding through a mounting rod.

Furthermore, as shown in FIG. 5, steel steps 41 are fixed to the side surfaces of the pillars 40 at appropriate intervals by welding.

[0006]

[Problem to be Solved by the Invention] However, since the conventional ladder described above is configured with a length etc. that matches the location where it is used, it is difficult to reuse it at other sites, and it is not only uneconomical but also Since it is attached to the pillar material by welding, it takes time to install, add, and remove, and even after removal, the ladder and the mounting rod are integrated, making it bulky, transporting, storing, etc. It was extremely inconvenient to handle.

[0007] Furthermore, the method of fixing step 41 shown in FIG. 5 by welding has a problem in that since there are many welding points, the welding work and the fusing work for removal after use are cumbersome and time-consuming.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a ladder device that is versatile enough to be adapted to various work sites and locations of use, and is extremely easy to handle.

[0009]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the ladder device of the present invention includes a single ladder body having steps for lifting and lowering and connecting portions at the upper and lower ends, and the ladder body. It is composed of a mounting member having a fixing part that is removably fixed and a part that is detachably attached to the building frame.

0010

[Operation] The removable mounting portion 23 of the mounting bracket 2 is attached to the building frame 1.
It is attached to a receiving member 11 provided at 0, and supports the mounting bracket 2 perpendicularly to the building frame 10. The ladder main body 1 is fixed to a fixing portion 22 provided on the mounting bracket 2. Furthermore, the ladder main bodies 1 are connected to each other by connecting portions 12 and 13.
It is used by connecting it to the required length.

[0011] After the work is completed, the removable mounting portion 23 of the mounting bracket 2 can be removed from the receiving member 11 provided on the building frame 10.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an example of the ladder device of the present invention, and FIG. 2 is a perspective view of essential parts of the ladder device of the present invention attached to a building frame.

The ladder device consists of a ladder body 1 and a mounting member 2 for attaching the ladder body 1 to a building frame 10.

The ladder main body 1 is a hollow iron pipe, and steps 3 are provided alternately on the left and right at appropriate intervals. The length of the ladder main body 1 is an appropriate length, specifically a relatively short length of around 2 m, in order to obtain versatility to suit various sites and locations of use, and to facilitate handling such as transportation and storage. Configured in length. However, it is convenient to have several lengths available.

Both ends of the ladder main body 1 are used as connecting parts 12 and 13 for connecting a plurality of ladder main bodies 1 in the length direction, and are connected to an appropriate length by the structure shown in FIGS. 3 and 4. be done.

That is, the connection structure shown in FIG.
A pipe joint 30 is used to connect the pipes by inserting a bolt 32 into the steel plates so that they face each other, and adjusting the tightening of the bolt to widen the interval between the steel plates.

Further, in the configuration shown in FIG. 4, a connecting member 14 having a diameter matching the inner diameter of the ladder body 1 is provided at one end of the ladder body 1.
is fitted and fixed by welding, and the protrusion of the connecting member 14 is fitted into one end of another ladder main body 1. Bolt holes 15 and 16 that are compatible with each other are bored in one end of the connecting member 14 and the ladder main body 1 on the receiving side, and after the ladder main bodies 1 are connected, a bolt 17 is inserted and tightened with a nut. Fixed.

Next, the mounting member 2 will be explained. The mounting member 2 is provided horizontally from the building frame 10 as shown in FIG. 2, and is for attaching the ladder main body 1 along the building frame 10. An expanded substantially U-shaped attachment member body 21, detachable attachment portions 23 provided at two ends of the body 21, and a building frame 10 of the body 21.
and a fixing part 22 attached to a plane parallel to.

In the embodiment shown in the drawings, the detachable attachment portion 23 is an engagement rod 23 fixed to the main body 21 by appropriate means such as welding.
The structure allows a split pin to be attached to the lower end to prevent it from falling out.

[0021] Furthermore, the fixing part 22 is attached to the ladder main body 1.
This is for attaching and fixing the clamp to the mounting member 2, and in this embodiment, it is constituted by a clamp 22.

[0022] In the ladder device of the present invention constructed as described above, hollow receiving members 11 are installed vertically and at appropriate intervals in advance in the process of processing and manufacturing the building frame (factory). It is provided by welding, and the engaging rod 23 of the mounting member 2 is inserted into and engaged with the receiving member 11 from above, and the ladder main body 1 is further fixed by the clamp 23 of the mounting member 2 for use.

[0023] The work of attaching the ladder main body 1 can also be carried out by temporarily fixing the clamps 22 of the ladder main body 1 and the mounting member 2 together in advance.

After completing the work using the ladder, remove the ladder body 1 from the clamp 22 and remove the engaging rod 2.
3 from the hollow receiving member 11. Note that there is no need to remove the receiving member 11 welded to the building frame 10.

[0025]

Effects of the Invention According to the present invention, it is economical because it can be used and reused in accordance with various sites and places of use, and it is easy to install, add to, remove, and disassemble, and is easy to transport. , there are advantages such as no need for troublesome handling such as storage.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a ladder device of the present invention.

FIG. 2 is a perspective view of essential parts showing a state in which the ladder device of the present invention is attached to a building frame.

FIG. 3 is an explanatory diagram showing a connection structure between ladder bodies.

FIG. 4 is an explanatory diagram showing another connection structure.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

A Ladder device 1. Ladder body 2 Mounting parts 12, 13 Connection part 22 Fixed part 23 Detachable mounting part

Claims (1)

[Claims] [Claim 1] A ladder main body having steps for ascending and descending and connecting parts at the upper and lower ends, a fixing part for removably fixing the ladder main body, and a detachable attachment part to a building frame. 1. A ladder device comprising: a mounting member having a mounting member;