JPH086543B2 - Suspension device for mobile scaffolding - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device for a mobile scaffold used for a mobile scaffold, and more specifically, a ladder that is a kind of scaffold is suspended substantially vertically and travels along a guide rail. A ladder, or a moving scaffold that runs along a guide rail with a scaffold formed by providing a scaffold plate between frames for supporting the scaffold plate, in short, what is called a ladder or scaffold plate TECHNICAL FIELD The present invention relates to a suspension device for a mobile scaffold which is used when a scaffold is suspended by a runner and travels along a guide rail.

[0002]

2. Description of the Related Art Conventionally, there has been no moving scaffold that runs along a guide rail by suspending a scaffold formed by providing scaffold plates between frames for supporting scaffold plates. A conventional suspension device for a moving ladder is shown in Figs.
It will be described based on 5. The conventional suspension device for the moving ladder is
A two-wheel runner (not shown), in which one runner is provided on each side of the pedestal and a total of two wheels are provided, and a ladder can be attached to the pedestal, or one side of the pedestal as shown in the above figures 2 wheels each, 4 vertical wheels 42 in total
A four-wheeled runner 40 having A, 42B, 42C, and 42D is provided with a support bolt 43 projecting directly below a stand 41, and a ladder 44 is directly fixed to the stand 41 by the support bolt 43. there were. And this runner 4
0 runs inside a frame-shaped guide rail 46 attached to a base (steel frame) 48 provided on a side wall 45 of a building, and projects a support bolt 43 from an opening groove 47 formed in a bottom wall 46A of the guide rail 46. Under the runner 40, the ladder 44 is supported and moved.

[0003]

However, in the conventional suspension device for a moving ladder, as described above, the pedestal 41 of the runner 40 traveling in the frame-shaped guide rail 46 provided in the building is used.
Since the ladder 44 has a rigid structure that is directly fixed, a person pushing the lower part of the ladder 44, for example, at the start of the moving traveling of the moving ladder that has been stopped, is indicated by the arrow A.
When a force is applied to move the two vertical wheels 42 of one side of the runner 40, as shown in FIG.
A and 42B are raised, and the other two wheels 42C and 4C
There was a drawback that the full load of the ladder 44 was applied only to the 2D, the load was not evenly applied to the four vertically oriented wheels, and the weight was very heavy and the vehicle could not travel lightly. In addition, sometimes, there is a drawback that the inclined runner 40 hits the upper wall of the guide rail 46 so as to twist. In addition, since the suspension device for a moving ladder consisting of a two-wheel type runner has only two wheels, it is difficult to suspend a ladder with a large load (50 kg or more). It lacks stability, and has a drawback that the runner base hits the bottom wall or the top wall of the guide rail at the start of traveling. The present invention solves the above-mentioned drawbacks, and particularly provides a suspension device for a mobile scaffold that can be moved lightly at the start of traveling such as a moving ladder that has been stopped or a mobile scaffolding formed of scaffolding boards. The purpose is to do.

[0004]

Therefore, in order to achieve the above object, the present invention is
If a plurality of vertically oriented wheels provided on the runner of the suspension device for mobile scaffolding are always evenly contacted with the bottom wall of the guide rail, the vertically oriented wheels are evenly loaded and the vehicle can travel lightly. Based on the findings, the scaffold support bracket is pivotally attached to the runner's mount, and the scaffold is attached to the bracket so that the scaffold can swing with respect to the runner's mount so that each vertical wheel is The guide rail is always in contact with the bottom wall of the guide rail so that the load is evenly applied to each of the vertically oriented wheels.

[0005] A specific construction of the suspension device for a moving scaffold comprises a guide rail, a runner running in the guide rail, and a bracket for supporting the scaffold provided on the runner. Formed into a rectangular frame,
An opening groove is formed in the center of the bottom wall along the length direction of the guide rail, and a runner is formed by a pedestal and a plurality of vertically oriented wheels provided on both sides of the pedestal. A suspension device for a moving scaffold in which a bracket for supporting a scaffold is pivotally attached to a central portion via a pivot shaft so that the scaffold can be attached to the bracket.

[0006]

The hanging device for a moving scaffold of the present invention is a bracket for supporting a scaffold pivotably supported on a runner's frame where each vertically oriented wheel is in contact with a bottom wall of a frame-shaped guide rail. Since the scaffold is attached to the scaffold, when the scaffold is pushed in the moving direction along the guide rail, the scaffold swings together with the scaffold support bracket to which the scaffold is attached. It is always kept parallel to the bottom wall of the guide rail, and each of the plurality of vertically oriented wheels always comes into even contact with the bottom wall of the guide rail, and each vertically oriented wheel is always loaded evenly. Start traveling lightly.

[0007]

EXAMPLE An example of the suspension device for a mobile scaffold according to the present invention will be described below with reference to FIGS. 1 to 11 for use in a mobile ladder in which a scaffold is a ladder, which is one mode of use.

As shown in FIGS. 1, 3, and 10, the moving ladder 11 comprises a runner 3 and a ladder 12, and a ladder 12
Is composed of a frame 12A and a step rail 12B. The moving ladder 11 runs along the guide rail 2 with the ladder 12 suspended from the runner 3.

The suspension device 1 for mobile scaffolding comprises a guide rail 2 and a runner 3 running in the guide rail.
First, the guide rail 2 will be described. Guide rail 2
As shown in FIGS. 1 and 4, each has a frame shape with a substantially quadrangular cross section, and an opening groove 2B is bored in the bottom wall 2A along the length direction thereof. The opening groove 2B will be described later. The lower end portion 10A of the bracket 10 for supporting the scaffolding or the opening groove from which the bolt 14 projects. Further, the guide rail 2 is provided with an opening groove 2D for a mounting bolt 17 on the upper side wall 2C along the length direction thereof, and the guide rail 2 has the mounting bolt 1
It is attached with a bolt 17 to a base (steel frame) 16 provided on the side wall 15 of the building through the opening groove 2D for 7. In addition,
The rib members 2E, 2F, 2G of the guide rail 2 have a reinforcing function for the guide rail. Opening groove 2D for mounting bolt 17
Thus, the guide rail 2 can be easily attached.

Next, the runner 3 will be described. As shown in FIGS. 2, 3, and 7, the runner 3 is formed by a pedestal 4 and two vertically oriented wheels 5A, 5B, 5C, 5D, two on each side of the gantry. That is, the gantry 4 has a hole 7 for the wheel shaft 6 and a hole 9 for the pivot shaft 8, and the wheel shaft 6 is attached to the hole 7 of the gantry 4.
The runner 3 is formed by attaching wheels to the wheel shaft 6 via bearings, as is commonly done. A bracket 10 having a substantially U-shaped cross section for supporting a ladder 12 is pivotally attached to a substantially central portion of a base 4 of the runner 3 by a pivot shaft 8. The frame 12A of the ladder 12 is directly welded to the lower end portion 10A of the bracket 10 or attached by a bolt 14 via brackets 13A and 13B as shown in FIG. The bracket 10 has a substantially U-shaped cross section as shown in FIG. 8, 10B is a hole into which the mounting bolt 14 is inserted, and 10C is a hole into which the pivot shaft 8 is inserted. Further, 18 in FIG. 1 is a brake pad, 1
Reference numeral 9 denotes a brake handle, which is used for a moving ladder or the like having a weight of 50 kg or more during work or during a typhoon.
This is to prevent the vehicle from traveling because it moves too lightly and slumps.

When a moving ladder is formed by the above moving scaffold suspension device 1, when a person gets on the ladder 12, the moving ladder moves as shown in FIG. 9 in order to prevent the building from leaning toward the side wall 15 side. As the lower guide mechanism 20 at the lower end of the ladder, the bracket 2 is attached to the side wall 15 side of the building of the lower end frame 12C of the ladder.
The horizontal guide wheels 25A, 25B, etc. are provided via 3 to connect the lower guide mechanism 20 to the vertical wall 22A of the lower guide rail 22 composed of an L-shaped frame attached to the foundation 21 of the building. It is convenient to provide it. However, when the ladder 12 is short, the lower guide mechanism 20 below it may not be provided.

The structure of the moving scaffold suspension device 1 including the guide rails 2 and the runners 3 has been described above. The operation and effect thereof will be described below.

The moving ladder usually has a length of 5 m or more, 50
There is more than 100 kg and more than 100 kg.
When pushed in the direction (FIGS. 10 and 11) or in the opposite direction, the vehicle travels along the guide rail 2. However, when the traveling traveling is started, for example, if the lower side of the ladder is pushed in the direction of arrow B (FIGS. 10 and 11). Since the ladder 12 is pivotally suspended by the bracket 4 of the runner 3 via the bracket 10, the frame 12A of the ladder 12 suspended at the position shown by the dotted line in FIG. 11 is shown by the solid line. It only tilts, i.e. rocks, to the position where it is. Then, the stand 4 of the runner 3
Does not incline, the pedestal 4 of the runner 3 itself is kept parallel to the bottom wall 2A of the guide rail 2, and the vertically oriented wheels 5A, 5
B, 5C, 5D are evenly contacted with the bottom wall 2A of the guide rail 2, and each of the vertically oriented wheels 5A, 5B, 5
Since the load of the ladder 12 is evenly applied to C and 5D, the mobile traveling is started lightly. Also, at this time, the pedestal 4
Is not inclined, the vertical wheels 5A and 5B on the running direction side of the runner 3 are lifted and the upper side wall 2C of the guide rail 2 is lifted.
It won't hit.

Although the embodiments of the present invention have been described above, the suspension device for a mobile scaffold of the present invention is, in addition to a mobile ladder, a so-called mobile scaffold formed of scaffold plates as described below. Also used for. FIG. 12 shows a perspective view of the moving scaffold 28 formed of scaffolding plates, and the structure of the suspension device for the moving scaffold is the same as that of the above-mentioned embodiment, so the description thereof will be omitted. The reference numeral 28 indicates, for example, two guide rails 2 and 2 installed above an indoor side wall, and scaffolding board supporting frames 26A and 26B arranged on the two guide rails 2.
A scaffolding board 27 is provided between them to be formed.

To explain its concrete structure, two runners 3 are arranged in one guide rail 2 at a distance from each other, and a bracket 10 pivotally mounted on a mount 4 of each runner 3 supports a scaffolding frame. 26A is attached and the other guide rail 2 is also provided with a frame 26B for supporting the scaffolding plate. Then, two guide rails 2 are provided on both indoor upper side walls to support the scaffold plate frames 2 on both sides.
A scaffolding plate 27 is laid between 6A and 26B to move the scaffolding 28.
Is formed.

This moving scaffold 28 is extremely convenient when it is used for cleaning or repairing an indoor ceiling because a person can ride on the scaffold plate 27 to perform work.
Even if the weight is kg, when the moving scaffold 28 is pushed by the force of a person at the start of the traveling, the frames 26A, 26B for supporting the scaffolding plate are supported via the bracket 10 pivotally attached to the pedestal 4 of the runner 3. Since the frames 26A, 26B for supporting the scaffolding plate are swung in the moving traveling direction because they are attached, the vertical wheels 5A, 5B, 5C, 5D provided on the pedestal 4 are mounted on the guide rails 2. Bottom wall 2A
The wheels are evenly contacted with each other, and the load is evenly applied to each of the vertically oriented wheels, so that the mobile traveling can be started lightly.

Although the embodiment of the present invention has been described above, as in the present invention, a bracket for supporting a scaffold is pivotally attached to a platform of a runner of a suspension device for a mobile scaffold by a pivot shaft, and a ladder is attached to the bracket. Instead of fixing the scaffolding with bolts, the bracket for supporting the scaffold is pivotally attached to the runner base of the suspension device for moving scaffolding with the pivot, and the scaffolding such as a ladder is attached to the bracket. Alternatively, the scaffolds may be pivotally attached to each other, and in this case, the scaffolds are pivotally suspended at two places and are swingable with respect to the runner's mount. It has the same effect as that of the embodiment.

[0018]

INDUSTRIAL APPLICABILITY The present invention is a suspension device for a moving scaffold, which comprises a guide rail, a runner traveling in the guide rail, and a bracket for supporting the scaffold provided on the runner. It is formed in a quadrangular frame shape, and an opening groove is bored in the center of the bottom wall along the length direction of the guide rail, and the runner is provided with a pedestal and a plurality of vertically oriented wheels provided on both sides of the pedestal. It is a suspension device for moving scaffolding that is formed by attaching a bracket for supporting scaffolding to the bracket approximately at the center part of the runner's pedestal via a pivot shaft and attaching the scaffolding to the bracket. When the scaffold is pushed in the moving direction at the start of moving running of the moving scaffold that was doing,
Since the scaffold can be attached to the runner's pedestal via a bracket for pivotally supporting the scaffold, the scaffold tilts, that is, swings only, the runner does not lean, and the runner's pedestal itself It is always kept parallel to the bottom wall of the guide rail, thus preventing the vertical wheels on the front side in the running direction of the runner from being lifted up.Each vertical wheel is evenly contacted with the bottom wall of the guide rail. Therefore, the mobile scaffolding can be lightly started to travel.

[Brief description of drawings]

FIG. 1 is a cross-sectional view when a moving ladder having a ladder attached to a suspension device for a moving scaffold is attached to a side wall of a building. 1 to 11 are explanatory views of a moving ladder which is an embodiment of the present invention.

FIG. 2 is a front view of a runner.

FIG. 3 is a side view of a suspension device for a mobile scaffold in which an upper side wall of a guide rail is omitted.

FIG. 4 is a sectional view of a guide rail.

FIG. 5 is an elevation view of a gantry.

FIG. 6 is a side view of the gantry.

FIG. 7 is an elevation view of the runner.

FIG. 8 is a perspective view of a bracket for supporting a suspended object.

FIG. 9 is a cross-sectional view of a lower end guide mechanism of a moving ladder.

[Fig. 10] Overall view of a moving ladder

FIG. 11 is an operation explanatory view of the suspension device for a mobile scaffold.

FIG. 12 is a perspective view of a moving scaffold according to another embodiment of the present invention.

FIG. 13 is a perspective view of a conventional four-wheel runner. FIG.
3-15 is explanatory drawing of the conventional suspension device for mobile ladders.

FIG. 14 is a cross-sectional view when a moving ladder is attached to a side wall of a building.

FIG. 15 is an operation explanatory view of the suspension device for the moving ladder.

[Explanation of symbols]

 1 Suspension device for mobile scaffolding 2 Guide rail 2A Bottom wall 2B Opening groove 2C Upper side wall 2D Mounting bolt opening groove 2E, 2F, 2G, rib member 3 Runner 4 Stand 5A, 5B, 5C, 5D Longitudinal wheel 6 Wheel axle 7 Wheel shaft hole 8 Pivot shaft 9 Pivot shaft hole 10 Scaffold support bracket 10A Lower end of bracket 10B Bolt 14 hole 10C Pivot shaft 8 hole 11 Moving ladder 12 Ladder 12A Frame 12B Stepping rail 12C Lower end frame 13A, 13B Bracket 14 Bolt 15 Building side wall 16 Base material 17 Bolt 18 Brake pad 19 Brake handle 20 Lower guide mechanism 21 Base 22 Lower guide rail (L-shaped frame) 22A Vertical wall 23 Bracket 24 bolt 25A, 25B Horizontal wheels 26A, 26B For supporting scaffolding boards Frame 27 scaffolding plate 28 mobile scaffold

Claims (5)

[Claims] 1. In a suspension device for a moving scaffold, which comprises a guide rail, a runner traveling in the guide rail, and a bracket for supporting the scaffold provided on the runner, the guide rail has a frame shape having a substantially rectangular cross section. The opening groove is formed in the center of the bottom wall along the length direction of the guide rail.
The runner is formed of a pedestal and a plurality of vertically oriented wheels provided on both sides of the pedestal.A bracket for supporting the scaffold is pivotally attached to the bracket at the approximate center of the pedestal of the runner via a pivot shaft. A suspension device for a mobile scaffold characterized in that a scaffold can be attached. 2. The suspension device for a mobile scaffold according to claim 1, wherein the bracket for supporting the scaffold has a substantially U-shaped cross section. 3. The suspension device for a mobile scaffold according to claim 1, wherein the runner is formed by providing a mount and two vertical wheels, two on each side of the mount. 4. The suspension device for a mobile scaffold according to claim 1, wherein the scaffold is a ladder. 5. The suspension for a mobile scaffold according to claim 1, wherein the scaffold is a scaffold formed of a scaffold plate supporting frame and a scaffold plate provided between the scaffold plate supporting frames. apparatus.