JPS647154Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a suspended scaffold used in construction work, etc.

Suspended scaffolding is attached to the upper flange of a beam steel frame using mounting hardware such as a catch base, and has the advantage of not requiring large-scale scaffold assembly work and taking up less space.

There are various types of such suspended scaffolding, but if the entire suspended scaffolding can be folded when not in use,
Setting and storing operations can be performed easily and quickly.

The purpose of the present invention is to create a foldable suspended scaffold of this kind, in which when it is unfolded during use, the part of the scaffolding board that bears the most load is directly supported by the hanging braces, so it is highly reliable in terms of strength and provides a sense of stability. On the other hand, when folded when not in use, it becomes completely flat without any protruding parts, making it ideal for stacking on top and bottom, so it does not take up much storage space, and there is a risk of the cargo collapsing when stacked on the bed of a truck, etc. Our goal is to provide suspended scaffolding without any problems.

However, according to the present invention, the purpose of the lever is to install a scaffolding board at the lower end of the parallel columns of the rear vertical fixed frame, and a U-shaped structure with a narrow front end and an upwardly curved rear end in the middle of the column. Attach handrails so that they can rotate freely,
The scaffold board and the handrail are rotatably connected via a handrail support, and the upper end of a hanging support made of channel material is pivoted above the fixed frame support that projects upward from the handrail, and the hanging support is attached to the outside of the handrail. The upper end is curved into a chevron shape, the lower end is provided with a protrusion that supports the scaffolding board, and the front side end of the scaffolding board is provided with wheels that engage with the suspension support. achieved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a front view showing an embodiment of the suspended scaffold of the present invention, Fig. 2 is a perspective view of the same as above, and Fig. 3 is an enlarged side view with a part cut away.
A rear vertical fixed frame 1 is formed by fixing an appropriate number of horizontal bars 1b, 1b' to a'. In this case, the middle horizontal bar 1
b' is fixed to the back surfaces of the columns 1a and 1a' so as not to interfere with the folding of the handrail body 10, which will be described later. Then, a portion of a baseboard 5 erected around the scaffolding board 4 is pivoted to the lower ends of the pillars 1a, 1a' of the fixed frame 1 with bolts or pins 6. In this case, a bracket 18 is provided so as to protrude upward from the baseboard 5 so that the scaffolding board 4 can be folded parallel to the pillars 1a and 1a'.
a, 1a'. The baseboard 5 constitutes a rectangular frame, and the shaft attachment portions are on both sides of the rear corner of this frame.

Further, handrail posts 8a, 8 are provided with U-shaped handrails 7a, 7a' in multiple stages (two stages in the illustration) up and down, erected midway between the pillars 1a, 1a' and from the baseboard 5 of the scaffolding board 4.
a', and the lower ends of these handrail supports 8a, 8a' are also pivoted to the baseboard 5.

The above-mentioned U-shaped handrails 7a, 7a' and handrail supports 8a,
8a' to form a handrail body 10 for preventing falls, and the U-shaped handrails 7a, 7a' are curved upward at the connection side with the pillars 1a, 1a', that is, at the rear end.
Moreover, the front end side is formed narrowly.

In addition, handrails 7a, 7a' and handrail supports 8a, 8
It is preferable for a' to have an oval shape with a hollow part because it is light in weight, but it may also be a solid one.
8a' is pivoted via a bracket 14.

The ends of the handrails 7a, 7a' are inserted into the columns 1a, 1a' with their openings facing forward, and are pivoted with pins 9.

In addition, left and right baseboards 5 located on the sides of the scaffolding board 4
Wheels 11 are provided on both sides of the front part of the
are engaged in hanging supports 13, 13' whose upper ends are pivoted inside with pins 12 above the portions of the columns 1a, 1a' of the fixed frame 1 that protrude upward from the handrails 7a, 7a'.

The suspension supports 13, 13' are made of a channel material having a square cross-section and having opposing leg pieces bent inwardly at the ends of a square hollow member, and the upper end thereof is curved so as to be connected to the wheel. No. 11 wheels 11a move through the slits 13a of the hanging supports 13, 13'. In addition, as shown in FIG.
A pin 16 is provided at the lower end of 3' to prevent the wheel 11 from being pulled out, and a scaffold board 4 is installed slightly below the pin 16.
A protrusion 15 is provided facing inward to receive and support the.

Reference numeral 19 indicates a suspension support provided at the lower end of the supports 1a, 1a'.

In this way, when the present invention is expanded, the hanging supports 1a and 1a' and the baseboard 5 are at right angles to each other.
3 and 13' are mounted obliquely while being curved, and the scaffolding board 4 and baseboard 5 are placed on the protrusion 15. As in the illustrated example, hanging supports 13,1
3' is located outside of the handrails 7a, 7a', the lateral movement of the handrails 7a, 7a' is controlled by the suspension supports 13, 13'.
Although it is preferable that it can be restricted by the inside, it is also possible to arrange it inside.

Each component of the scaffold of the present invention can be made lightweight by using aluminum materials.

Next, the method and action will be explained.

When not in use, the scaffold of the present invention is folded as shown in FIG. 4, but from the state shown in FIG. If you grasp a part of the handrail with your hand and push it upward, each shaft attachment part will rotate and the handrail body 1 will
0 approaches frame 1 and the side parts are folded parallel to each other according to the principle of a parallelogram; in this case,
By making the front end sides of the U-shaped handrails 7a, 7a' narrower, it is possible to avoid overlapping of the two, and by bending the connecting side with the pillars 1a, 1a' upward, the handrail body 10 can be connected to the pillar 1.
Since the handrail body 10 can be folded parallel to the lines a and 1a', the handrail body 10 can be folded flat. At this time, the wheels 11 move within the hanging supports 13, 13', and what was at the bottom moves upward. As the wheel 11 moves, the lower ends of the suspension struts 13 and 13' are drawn toward the frame 1, and in this case, the suspension struts 1
3 and 13' have their upper ends curved and a suspension support 19 is provided at the lower end of the supports 1a and 1a', so that they can be folded completely parallel to the frame 1, as shown in FIG.

As a result, unlike the case where the hanging supports are configured in a straight line, a folded scaffold with as few protruding parts as possible,
Since it is flat and thin overall, it does not take up much storage space.

Next, in order to unfold it for use, the reverse operation of the folding operation is performed to return it to the state shown in FIG.
It stops at the protrusion 15. In this state, the scaffolding board 4 and the baseboard 5 are in a horizontal state, and are suspended in a truss-like manner not only through the lower ends of the supports 1a and 1a' but also through the protruding portions 15 of the hanging supports 13 and 13'. .

In order to attach the scaffold of the present invention expanded in this way to the flange on the steel frame, it is sufficient to fix the columns 1a and 1a' to the flange surface using known mounting hardware 17.
It is also possible to first fold it, attach it to the steel frame, and then unfold it.

As mentioned above, the suspended scaffold of the present invention can be supported in a truss-like manner by both the protruding part of the lower end of the fixed frame, which serves as the supporting part, and the lower end of the hanging support, in which the part of the scaffold plate that bears the most load when it is unfolded during use. Therefore, it is highly reliable in terms of strength and can provide a sense of stability to the user.

In addition, when not in use, the suspension struts can be folded completely parallel to the rear vertical fixing frame, allowing them to be stacked closely together without any protruding parts that would occur if the suspension struts were straight. It does not take up a lot of storage space, and there is no risk of the loads falling apart when stacked on the bed of a truck.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the suspended scaffold of the present invention, Fig. 2 is a perspective view of the same as above, Fig. 3 is an enlarged side view with a part cut away, Fig. 4 is an enlarged side view of the suspended scaffold in the folded state, FIG. 5 is an end view of the main part, and FIG. 6 is a sectional view of the main part of the scaffold board. 1... Rear vertical fixed frame, 1a, 1a'... Support column,
1b... Horizontal beam, 4... Scaffolding board, 5... Baseboard, 6...
...Pin, 7a, 7a'...U-shaped handrail, 8a, 8
a'...handrail support, 9...pin, 10...handrail body,
11...Wheel, 11a...Axle, 12...Pin,
13, 13'... Hanging support material, 14... Bracket,
15... Projection, 16... Pin, 17... Mounting hardware, 18... Bracket, 19... Hanging support support.

Claims (1)

[Scope of utility model registration request] A scaffold board is attached to the lower end of the parallel columns of the rear vertical fixed frame, and a U-shaped handrail with a narrow front end and an upwardly curved rear end is rotatably attached to the middle of the column. The handrail is rotatably connected to the handrail via a handrail support, and the upper end of a suspension support made of channel material is pivoted above the fixed frame support that projects upward from the handrail, and the suspension support is located at an outside position of the handrail. arranged,
A suspended scaffold, characterized in that the upper end is curved into a chevron shape, the lower end is provided with a protruding part for receiving and supporting the scaffold board, and the front side end of the scaffold board is provided with wheels that engage with the hanging supports. .