JPH026186Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a temporary scaffold that is erected on rails laid on left and right scaffold supports so as to be movable back and forth via wheels.

<Prior Art> Conventionally, in a temporary scaffold constructed so as to be movable back and forth via wheels on rails laid on left and right scaffold supports, wheels 40 attached to a scaffold 39 are used as shown in FIG. The wheels 40 are attached to the bogie section 42 so that the wheels 40 do not derail from the rails 41.
The left and right ends of the rail 41 extend downward to the left and right sides of the rail 41, and derailment prevention members 43, 43 facing each other are attached to the left and right ends of the rail 41. As this derailment prevention member 43, a bolt may be used as shown in the figure, or
Alternatively, rolling rollers were sometimes used. Also,
As shown in the figure, H-shaped steel is generally used as the truck portion 42, and the wheels 40 are mounted between the flanges 42a and 42b by cutting out a portion of the web 42c.

<Problem that the invention aims to solve> When it comes to large temporary scaffolding, the weight becomes very large, and the axle 44 of the wheel 40 and the derailment prevention member 4
3 may break and derail. Then,
In the temporary scaffolding, the trolley part 42 is in contact with the upper surface of the scaffold support 45, or the web 42c of the trolley part 42 is in contact with the rail 4.
1.It was extremely dangerous because it tilted until it touched the top surface. In particular, if the temporary scaffolding derailed while in motion, it was difficult and even more dangerous to apply the brakes immediately.

In view of the above, the present invention aims to provide a safety device that can prevent the temporary scaffold from tilting significantly when the wheels of the temporary scaffold derail from the rails, and can also apply the brakes if the scaffold is running. .

<Means for Solving the Problems> The technical measures taken by the present invention to solve the problems of the prior art are characterized by the fact that the wheels 25 are mounted on the rails 23 laid on the left and right scaffolding supports 2. A trolley section 24 made of H-shaped steel is attached to the lower left and right ends of the temporary scaffolding 3, which is movably movable back and forth. In the case where the wheels 25 are installed at the front and rear ends of the H-shaped steel web 24a so as to be located between the left and right flanges 24b and 24c, which are cut out at the front and rear ends of the web 24a, the wheels 25 of the rails 23 are attached to the front and rear ends of each truck part 24. A shoe member 30 is attached facing the upper surface with a slight distance therebetween, and this shoe member 30 projects to the left and right beyond the left and right ends of the wheels 25, and the left and right protrusions of the shoe member 30 are provided with the rails 23. The rolling rollers 31 located on the left and right sides are rotatably mounted around a vertical axis.

<Operation> According to the configuration of the present invention, even if the wheels of the temporary scaffold try to derail from the rail to the left or right, the rolling rollers abut against the sides of the rail, thereby preventing derailment. At this time, since the rolling roller rotates around the vertical axis, it does not act as a brake for the forward and backward movement of the temporary scaffold.

In addition, the rolling rollers that rotate around the vertical axis must be placed on the left and right sides of the rail in order to perform the derailment prevention function, but by being attached to the left and right protrusions of the shoe member, the rolling rollers No special parts are required for installation.

Even if the spindle of the rolling roller breaks, the shoe member faces the upper surface of the rail with a small distance, and its left and right ends protrude laterally than the left and right ends of the wheels, so the temporary scaffolding can be used easily. Even if the train derails from the rail, the shoe member contacts the upper surface of the rail and does not tilt significantly. Further, even if the temporary scaffolding is running at the time of derailment, the brake is applied due to the friction between the shoe member and the upper surface of the rail.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIGS. 5 to 8, 1 is a structure;
For example, on the roof of a factory, warehouse, etc., reference numerals 2, 2 are side pillar frames on both the left and right sides of the structure as scaffolding supports. On each scaffolding support 2, 2 there is a rail 23 for an overhead crane.
is laid, and temporary scaffolding 3 is placed on the rails 23, 23.
has been erected. The temporary scaffolding 3 includes a plurality (a pair in this embodiment) of scaffolding frameworks 4 arranged in parallel and spaced apart from each other in the front and back. Each scaffolding framework 4 has a lower scaffolding beam body 5 having a length extending between the column frames 2 on both sides.
, a support beam 6 connected to the lower sides of both ends of the lower scaffolding beam 5 in a downwardly protruding manner, and a supporting beam connected to the lower side of the lateral center of the lower scaffolding beam 5 in a downwardly protruding manner. It includes a body 7 and a pair of left and right rotating scaffold beam members 8 placed on the upper side of the lower scaffold beam member 5 in an overlapping manner. Each beam body 5,
As shown in FIG. 8, 6, 7, and 8 are cylindrical pipe materials 9 placed at each vertex position of the square, connecting members 10 that connect each pipe material 9, and each pipe material 9.
The frame consists of circular joining flanges (not shown) provided at both ends of the flange. The connecting material 10
is made of pipe material, channel material, etc., and is provided in a truss structure extending between adjacent pipe materials 9. The inside of each beam body 5, 6, 7, and 8 is formed into a hollow shape. and each beam 5, 6, 7, 8 has a framework configuration with a desired length;
Alternatively, a framework structure is provided in which mutual joining flanges are joined to each other and connected to a desired length.

As shown in FIG.
A push-up link mechanism 12 is connected to opposing portions of both rotating scaffolding beam bodies 8 at the center. The push-up link mechanism 12 includes a push-up rod 14 that is supported by a support housing 13 provided at the center of the lower scaffolding beam body 5 so as to be relatively movable in the vertical direction, and a push-up rod 14 that is swingable at the upper end of the push-up rod 14. A pair of left and right swinging rods 15, 15 are pivotally supported, and the upper end of each swinging rod 15, 15 is pivotally connected to both rotating scaffold beam bodies 8. Further, the push-up rod 14 is configured to move relative to each other in the vertical direction within the support beam body 7. The support housing 13 is provided with a pair of wire guides 16, one end of a wire 17 is fixed to one of the wire guides 16, and the other end of the wire 17 is passed through a wire guide 18 at the lower end of the push-up rod 14. , to the other wire guide 16, and is further connected to an operating winch 19 installed at the end of the lower scaffolding beam body 5. By winding up and unwinding the operation winch 19, the push-up lever 14 can be moved up and down, and by the up-and-down movement of the push-up lever 14, each rotating scaffolding beam body 8 can be rotated around the pivot portion 11. The structure is such that a slope corresponding to the slope of the roof 1 can be obtained. Note that the wire 17 is configured to move within the lower scaffold beam body 5 and within the support beam body 7.

Reference numeral 20 denotes a pair of anti-deflection wires, one end of which is connected to both sides of one end of the lower scaffold beam body 5, and the other end is connected to each wire guide 21 on both sides of the lower end of the support beam body 7. , are connected to both sides of the other end of the lower scaffolding beam body 5. Both deflection prevention wires 20 are arranged below along the pipe material 9 of the so-called lower scaffolding beam body 5 and the support beam body 7, and are stretched under appropriate tension by a turnbuckle 22, a winch, etc. .

At the lower end of each support beam body 6, 6, a first
As shown in FIGS.
5 is installed. This front and rear wheels 25, 25
The temporary scaffolding 3 is movable back and forth on the rails 23, 23 via the rails 23, 23.

The carriage part 24 is attached to the lower end of the column beam body 6 using a web 24a of H-shaped steel that constitutes the carriage part 24.
A pair of front and rear L-shaped connecting members 26, 26 are welded to the support beam body 6, and the pipe material 9 is welded to the support beam body 6.
A pair of front and rear H-shaped steel joining members 27, 27 are fixed via the flange 9a at the lower end. Then, the joining member 27 is placed on the cart portion 24. At this time, the lower end flange 27a of the H-shaped steel that constitutes the joining member 27
is located below the upper protrusion 26a of the connecting member 26, and then the bolt 2 screwed into the upper protrusion
8, the lower end flange 27a of the joining member 27 is pressed. As a result, the support beam body 6 and the truck portion 24 are attached.

In addition, the wheels 25, 25 are attached to the truck portion 24 by attaching them to the H-shaped steel web 24a that constitutes the truck portion 24.
The front and rear of the wheels 25 are cut out, and the wheels 25 become flanges 2.
4b, 24c and the axles 29, 2
It is rotatably attached via 9.

Shoe members 30, 30 made of L-shaped steel are welded to the front and rear sides of the truck portion 24. The shoe member 30 has a longitudinal direction extending in the left-right direction, one side 30a is welded to the truck part 24, and the other side 30b is attached to the rail 23.
It faces the upper surface with a slight distance D therebetween. The facing distance D between the shoe member 30 and the upper surface of the rail 23 is preferably as small as possible, but it is determined as appropriate depending on the unevenness of the upper surface of the rail 23, the roundness of the wheels 25, the shaft support accuracy, etc.

Then, the left and right ends 30L, 30 of the show member 30
R projects laterally beyond the left and right ends of the wheel 25. In this embodiment, the protruding dimensions S1 and S2 are approximately twice the width dimension S3 of the wheel 25. Here, rolling rollers 31, 31 located on the sides of the rail 23 are attached to the protruding portion so as to be rotatable about a vertical axis, thereby preventing the wheel 25 from derailing from the rail 23.

A seventh beam is placed between each of the rotating scaffolding beam bodies 8, 8 arranged in parallel at the front and rear of the scaffolding framework 4 configured as described above.
As shown in the figure, support pipes 40... are appropriately constructed,
A safety net 41 is provided on the support pipe 40, and a scaffolding board 42 is provided on the safety net 41, thereby forming a scaffolding floor. Further, a bellows-type safety net 43 that can be expanded and contracted is installed between the rotating scaffold beam bodies 8 on both sides.

In the temporary scaffolding 3 of the above embodiment, the wheels 25
The axle 29 and rolling rollers 31 of the rail 2 were broken.
3, even if the show member 30 derails from the rail 23
Since the shoe member 30 faces the upper surface with a slight distance D and its left and right ends 30L and 30R protrude laterally than the left and right ends of the wheel 25, the shoe member 30 does not come into contact with the upper surface of the rail 23 and tilt significantly. do not have.
Further, even if the temporary scaffolding 3 is running at the time of derailment, the brake is applied due to the friction between the shoe member 30 and the upper surface of the rail 23. In other words, safety is ensured in the event of a derailment.

In the above embodiment, the shoe member 30 is provided at the front and rear ends of the truck section 24, but as shown by chain lines in FIGS. A plate-shaped show member 30' welded to a shape and flanges 24b, 24c
L-shaped steel shoe member 30″, 3 welded to the side
0'' may be added.

Further, the protrusion dimension of the left and right ends 30R and 30L of the shoe member 30 from the left and right ends of the wheels 25 is not limited to approximately twice the width of the wheel as in the above embodiment; As long as it can engage and support the temporary scaffolding 3,
It is sufficient that it protrudes to the left and right beyond the left and right ends of the wheels 25.

<Effects of the Invention> According to the present invention, even if the wheels of the temporary scaffold try to derail from the rail, the rolling rollers contact the sides of the rail, thereby preventing derailment. The rolling rollers are attached to the left and right protrusions of the shoe member and rotate around the vertical axis, so they do not act as a brake for the forward and backward movement of the temporary scaffolding. do not need. The temporary scaffolding is provided with a shoe member that faces the upper surface of the rail with a slight distance therebetween, and the left and right ends of the shoe member protrude laterally beyond the left and right ends of the wheels, so that the temporary scaffolding is free from the rail. Even if the train derails, the shoe member will not come into contact with the upper surface of the rail and will not tilt significantly. Further, even if the temporary scaffolding is running at the time of derailment, the brake is applied due to the friction between the shoe member and the top surface of the rail. In other words, safety is ensured in the event of a derailment.

[Brief explanation of the drawing]

Figures 1 to 8 relate to an embodiment of the present invention, in which Figure 1 is an enlarged side view of the main part of the temporary scaffold, Figure 2 is a front view of the same, and Figure 3 is a cross section taken along line A-A in Figure 2. Figure 4 is a sectional view taken along the line B-B in Figure 1, Figure 5 is a front view of the temporary scaffolding, Figure 6 is an enlarged front view of the same part, Figure 7 is an enlarged plan view of the same part, and Figure 8 9 is a structural explanatory diagram of the same beam body, and FIG. 9 is an enlarged front view of the main part of a temporary scaffolding according to a conventional example. 2...Scaffold support, 3...Temporary scaffold, 23...
Rail, 25...Wheel, 30...Shoe member.

Claims (1)

[Scope of utility model registration request] A trolley section 24 made of H-shaped steel is installed at the lower left and right ends of the temporary scaffold 3, which is constructed so as to be movable back and forth via wheels 25 on the rails 23 laid on the left and right scaffold supports 2.
However, the flanges 24b and 24c of the H-shaped steel are mounted so as to face each other on the left and right, and the wheels 25 are attached to the front and rear ends of the truck portion 24, and the web 2 of the H-shaped steel
Left and right flanges 24b, 24 cut out at the front and rear of 4a
c, the rail 2 is attached to the front and rear ends of each truck portion 24.
A shoe member 30 is mounted to face the upper surface of the wheel 25 with a slight distance therebetween, and this shoe member 30 projects laterally beyond the left and right ends of the wheel 25. 23
A safety device at the time of derailment of a temporary scaffold, characterized in that rolling rollers 31 located on the left and right sides of the temporary scaffold are rotatably mounted around a vertical axis.