JPH0583185U - Frame stair members for scaffolding - Google Patents

Abstract

(57) [Summary] (Corrected) [Structure] A frame scaffolding staircase member in which a landing 3a of about 400 mm in the column direction is provided on the scaffolding staircase erected between one pedestal. [Effect] Stair members for scaffolding can be stored in one span,
In addition, people can pass the pedestal more safely.

Description

[Detailed description of the device]

The present invention relates to a frame scaffolding stair member using steel pipes (hereinafter referred to as scaffolding stairs), and more particularly to a scaffolding stairway in which a landing is provided between one pillar.

[0002]

[Prior Art]

 According to the Occupational Safety and Health Regulations, the frame scaffolding specifies that the distance between columns is 1850 mm or less in the row direction and 1500 mm or less in the beam direction. Conventionally, as shown in FIG. 5 and FIG. 6, since the distance L1 between the pillars 5a in the row direction is as short as 1850 mm or less and the height is also limited to 1700 to 1800 mm, the scaffold composed of the square pipe 1 and the tread 2 is used. The staircase itself was erected between one pillar 5a, and the footstep 3a attached to it was bridged between the adjacent pillar 5b and the pillar 5a.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional stairs for scaffolding have the following problems. In other words, the member with the stairs itself arranged on the stairs for scaffolding cannot be stored in the space of one pedestal (1 span), and 2 spans or 3 spans are required to dispose the member. A large space is required in the row direction. If the frame scaffolding has only one span, there will be no staging when a person moves from the first staircase staircase to the second scaffolding staircase, which will result in unsafe movement. When trying to secure a foothold, it is necessary to arrange an extra foot span for one span along the stairs for scaffolding, which is wasteful.

The standard frame or the simple frame of the pedestal is as shown in FIG. 7 (view A of FIG. 5 and FIG. 1), and the dimensions of the intervals L2 between the beams, and l1 and l2 are as shown in the Industrial Safety and Health Act No. 42. It is standardized according to the provisions of the Article. In the conventional stairs for scaffolding, when a person passes the pedestal 5a while standing on the bottom tread in FIG. 5, when the posture of the head is kept as it is because of the relationship between the stiffener 6 of the frame and the height of the person. As the body hits the pedestal and stiffener, it has to take an unnatural posture, which poses a problem in terms of human safety, mental health and work.

[0005]

[Means for Solving the Problems]

 The present inventor has conducted intensive studies to solve the above-mentioned problems in the conventional stairs for scaffolding, and as a result, found that the solution can be achieved by attaching a landing to the stairs for scaffolding within one span. Well, based on this knowledge, we came to the present invention. That is, the present invention is characterized in that, in a frame scaffolding staircase using steel pipes or the like, one or more landings of about 400 mm in the row direction are provided on the scaffolding staircase erected between one pillar and the staircase for scaffolding scaffolding. It is a member.

[0006]

[Action]

 The operation and configuration of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an example of a stairway for scaffolding according to the present invention, and FIG. 2 is a plan view thereof. As shown in FIG. 1, a footstep 3a should be attached to a conventional stairway for scaffolding composed of a square pipe or a round pipe (hereinafter abbreviated as a square pipe) 1 and a tread 2 within 1850 mm of the distance L1 between the pillars. As a result, the footing is contained within one span, so there is no need for a wide span as in the past. Even in the case of only one span, by arranging the scaffolding stairs according to the present invention as shown on the left side of FIG. 2, a person can safely go up and down.

When passing through the pedestals 5a and 5b while descending, the frame and its stiffener 6 (see FIG. 7) are compared with the conventional stairs for scaffolding that pass after a person stands on the footstep 3a. Since there is plenty of room for human relationships, it is less likely to hinder safety, mental health and work. The reason for limiting the row direction of the stairs to about 400 mm is that one span is 1850 mm or less, and if it is too wide than 400 mm, the number of treads 2 will be too small and the effective height of the scaffolding deck will be low. On the other hand, if it is too narrower than 400 mm, the movement of the person is restricted, and the person cannot turn in the footstep. Therefore, 400 mm ± 40 mm is optimal, and in the present invention, the length in the row direction is about 400 mm.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a front view of the embodiment, and FIG. 4 is a side view of 3. A tread 2 having a width L6 of 360 mm between the square pipes 1 and a space L3 of 285 mm was arranged, and a tread 3b having a length L4 of 330 mm was used for the tread 3a. Clamps 4 were installed at both ends of the square pipe and used as fulcrums. A scaffold staircase having an effective height L7 of 1800 mm and an effective length L8 of 1800 mm was manufactured and used. When the stairs for scaffolding are arranged and used as shown in Fig. 1, it is possible for a person to form a town when going up and down within one span and to pass a pedestal safely when compared to the past. it can.

[0009]

[Effect of the device]

 According to the present invention, a staircase for scaffolding is stored in one span, and it can be easily turned by a person using it, and when passing a pedestal, it can pass safely as compared with the conventional method. ..

[Brief description of drawings]

FIG. 1 is a front view of an example of a stairway for scaffolding according to the present invention.

FIG. 2 is a plan view of an example of stairs for scaffolding according to the present invention.

FIG. 3 is a front view of an embodiment of a stairway for scaffolding according to the present invention.

FIG. 4 is a side view of an embodiment of stairs for scaffolding according to the present invention.

FIG. 5 is a front view of the conventional stairs for scaffolding.

FIG. 6 is a plan view of a conventional stairway for scaffolding.

FIG. 7 is a front view of a standard frame (a) and a simple frame (b) of a pillar.

[Explanation of symbols]

 1. Square pipe or round pipe 2. Footboard 3a. Landing 3b. Footboard 4. Clamp 5a. Pedestal 5b. Pillar 6. Stiffener L1. Pillar spacing (column direction) L2. Post spacing (direction between beams) L3. Distance between treads L4. Length of tread L5. Step length L6. Width between square pipes L7. Effective height L8. Effective length

Claims (1)

[Scope of utility model registration request] 1. In a frame scaffolding staircase using a steel pipe or the like, a row direction of about 4 in the scaffolding staircase installed between one pillars.
A stair member for framework scaffolds, which is characterized by having one or more 00 mm landings.