JPH0115792Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mobile scaffolding device used at construction sites and the like.

Conventionally, mobile scaffolding devices have been used when working at high places such as ceilings or walls at construction sites while sequentially moving the work position. It is known that a support frame is integrally provided on a base that is movably installed, a working floor plate is provided on the support frame, and a ladder for ascending and descending is integrally attached to the outside of the support frame.

However, in the case of such conventional mobile scaffolding equipment, the working floorboard is integrated with the base via the support frame, so it is difficult to adapt to changes in the floor height or the construction of small beams at the construction site. There is a problem in that it is difficult to quickly adjust the working height, that is, the height of the working floorboard, which changes over time. Also,
Since the ramp is attached to the outside of the frame, it is dangerous when moving onto the work floor, and since the height cannot be adjusted, workability is low and countermeasures are needed.

The present invention was developed in view of the conventional circumstances mentioned above, and its purpose is to quickly adjust the working height and improve safety and work efficiency. The purpose of the present invention is to provide a type of scaffolding device.

Hereinafter, the present invention will be explained based on an embodiment shown in the drawings.

In FIG. 1, reference numeral 1 indicates a mobile scaffolding device according to the present embodiment, which includes a base 2 that is movably installed on the floor surface B of the construction site, and a base 2 that is fixed integrally on the base 2. This support frame 3 is provided with a support frame 3 that is at least partially removable within the support frame 3.
an elevating frame 5 having a working floor surface 4, which is movable up and down relative to the surface (in a direction perpendicular to the surface direction of the base 2, in the vertical direction in FIG. 1); The lifting frame 5 is provided between the supporting frame 3 and the lifting frame 5.
an elevator 6 that moves up and down, an extendable ladder 7 provided between the support frame 3 and the work floor plate 4 inside the support frame 3 and the elevator frame 5, and the support frame 3 and the elevator frame 5. It has a general configuration including holes (not shown) provided in the overlapping portions of each, and locking pins 10 that are inserted into these holes to restrain relative movement between the support frame 3 and the elevating frame 5. There is.

Next, to explain these details, the base 2 may be made of square steel pipes framed in a rectangular shape, or
Alternatively, it is formed using a rectangular steel plate, and each of the squares is provided with casters 8 for supporting the weight of the entire device and moving the device in any direction on the floor surface B.

As shown in FIGS. 1 and 2, the support frame 3 includes a pipe-shaped vertical frame 3a integrally attached to a square of the base 2 so as to be orthogonal to the base 2, and It is constituted by a large number of horizontal frames 3b that connect the frames 3a.

As shown in FIGS. 1 and 2, the elevating frame 5 includes vertical frames 5a that are slidably inserted into each vertical frame 3a of the support frame 3 from above, and a space between these vertical frames 5a. a large number of horizontal frames 5b connecting the vertical frames 5a, and connected to the vertical frames 5a so as to protrude in the length direction thereof, and
A handrail 5c is provided surrounding the lifting frame 5, and the handrail 5c is provided at the upper end of the lifting frame 5.
The work floor plate 4 is placed in the area surrounded by c.
are integrally attached, and each vertical frame 5 is attached to the lower end.
An intermediate floor plate 9 supported by a or horizontal frame 5b is attached. In other words, the vertical frame 5 of the lifting frame 5
a is slidably inserted into the vertical frame 3a of the support frame 3, so that a part of the lift frame 5 can be freely stored in the support frame 3, whereby the lift frame 5 itself is inserted into the support frame 3. It is possible to move up and down relative to the

The working floor plate 4 is formed of a steel plate or the like, and is connected and fixed to the horizontal frame 5b of the elevating frame 5.

On the other hand, the intermediate floor plate 9 and the working floor plate 4 are provided with a passage for going up and down and an opening/closing door (both not shown) for opening and closing the passage.

As shown in FIGS. 1 and 3, the elevator 6 is interposed between a horizontal frame 3b at the upper end of the support frame 3 and a horizontal frame 5b at the lower end of the elevator frame 5. It consists of a lifting rod 6a attached to the frame 5b, and an elevator main body 6b attached to the horizontal frame 3b to move the lifting rod 6a up and down, and the elevator main body 6b has a ratchet mechanism (not shown) inside.
is incorporated therein, and is provided with an operating lever 6c for operating the ratchet mechanism and a switching lever 6d for selecting the moving direction of the lifting rod 6a.

In this embodiment, the ladder 7 is a first ladder 7 provided between the lower part of the support frame 3 and the intermediate floor plate 9.
a and a second ladder 7b provided between the intermediate floor plate 9 and the working floor plate 4, both of which are installed inside the support frame 3 and the lifting frame 5. As shown in FIG. 2, the first ladder 7a is composed of a fixed ladder 7c fixed to the support frame 3 and an elevating ladder 7d fixed to the elevating frame 5. The fixed ladder 7c and the elevating ladder 7d are designed to slide relative to each other and expand and contract as the elevating frame 5 moves up and down.

On the other hand, in FIGS. 1 and 3, the reference numeral 10 is a locking pin, which is inserted into a hole provided in the overlapping portion of the vertical frames 3a and 5a of the support frame 3 and the elevating frame 5, respectively. The vertical frames 3a and 5a are inserted from the opposite direction to restrict relative movement of both vertical frames 3a and 5a.

As shown in FIGS. 1 to 3, the mobile scaffolding device 1 of this embodiment configured in this way has a support frame 3 assembled on a base 2, and an intermediate floor plate 9, It is assembled by assembling the lifting frame 5 provided with the working floor plate 4 and the second ladder 7b, and then attaching the first ladder 7a and the elevator 6 between the support frame 3 and the lifting frame 5.

Then, after lowering the lifting frame 5 to the lowest position and setting it at a working position on the floor surface B of the construction site, both elevators 6 are operated to lower the lifting frame 5 as indicated by the chain line in FIG. By raising it as shown, the working floor plate 4 can be positioned at a desired working height. As the elevating frame 5 rises, the first ladder 7a extends, and the intermediate floor plate 9 and the vicinity of the base 2 are maintained in a constant state of communication.

In addition, when changing the working position, if the next working position is low, the operating direction of the elevator 6 is switched to the downward direction using the switching lever 6d before moving the device, and each The locking pin 10 is removed, and then the elevator 6 is operated to lower the lifting frame 5 to adjust the working floor plate 4 to the next working height, and the locking pin 10 is lifted and lowered again to the support frame 3 After inserting it into the overlapped portion with the frame 5 and fixing both, it is sufficient to move it to the next working position.

Thereafter, by sequentially repeating the above-described operations, the work floor plate 4 is placed at work positions of different heights.
In addition, when moving the device, even if there is a low place on the moving route, it can be avoided by lowering the lifting frame 5, and the movement can be avoided. It can be easily implemented.

In the above embodiments, the elevator 6 is illustrated as a mechanical type, but the elevator is not limited to this, and an elevator that uses fluid pressure may be used, and its installation location can be changed in various ways. be. Further, in the embodiment described above, an example was shown in which two ladders 7 were provided, but it may be provided with only one ladder 7.

As explained above, the mobile scaffolding device according to the present invention includes a support frame provided on a movable base, a lift frame provided on the support frame, and a lift frame for raising and lowering the lift frame between the two frames. An elevator is installed, and the elevator raises and lowers the lifting frame as well as the work floor plate attached to the lifting frame, allowing for quick work in response to changes in floor heights, beam size, etc. at the construction site. The height, ie the height of the working floorboard, can be adjusted. Furthermore, even if there is a low point on the construction site along the equipment's movement path, the lift frame can be lowered by operating the elevator to easily avoid the low point, making it easier to move the equipment. do. In addition, since a part of the lifting frame 5 is configured to be freely stored within the support frame 3, the total height of the scaffolding device when stored in a warehouse etc. is smaller than the total height of the scaffolding device required during work. It is possible to store it in a lowered position, which saves space. Furthermore, since a ladder is provided between the base and the work floor board inside the support frame and the lifting frame, safety and workability are improved, such as making it possible to move onto the work floor safely. can do.

In addition, if the ladder is composed of a fixed ladder fixed to a support frame and an elevating ladder slidably provided on the fixed ladder and fixed to the elevating frame, the ladder can follow changes in the height of the working floorboard. This is preferable because the length of the ladder can be automatically adjusted to an appropriate length, and in combination with the above effects, the flow of work can be made smoother.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is an enlarged view of the attachment part of the elevator, and FIG. 4 is an operation explanatory diagram. 1... Mobile scaffolding device, 2... Base, 3... Support frame, 4... Working floor plate, 5... Lifting frame, 6...
Elevator, 7...Ladder, 7a...First ladder, 7b
... Second ladder, 7c ... Fixed ladder, 7d ... Lifting ladder, 8 ... Caster, 10 ... Locking pin,
B...Floor surface.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A base that is movably installed on the floor of a construction site, a support frame that is integrally fixed on the base,
A lifting frame, at least a portion of which can be freely stored within the support frame, is movable up and down relative to the support frame, and has a working floor plate; an elevator provided between the platform and the elevator frame to move the elevator frame up and down; an extendable ladder provided between the base and the work floor plate inside the support frame and the elevator frame; and the support frame and the elevator frame. A movable scaffolding device comprising holes provided in each of the overlapping portions of the support frame and a locking pin inserted into these holes to restrain relative movement between the support frame and the elevating frame. 2. The ladder includes a fixed ladder fixed to a support frame;
The movable scaffolding device according to claim 1, which is a registered utility model, characterized in that it comprises a lifting ladder that is slidably provided on the fixed ladder and fixed to the lifting frame.