JPH0246594Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a handrail support mechanism for a mobile work scaffold used at construction sites and the like.

Figures 1 and 2 show a conventional example of a mobile work scaffold called a rolling tower. At the same time, the handrail post 4 is slidably supported by the pipe-shaped handrail post support 3 provided at the top of the building frame 1, and a pin is inserted into the engagement hole 4a of the handrail post 4 from the outside of the handrail post support 3. 5, the handrail post holder 3 and the handrail post 4 are removably connected, and furthermore, this handrail post 4
The intermediate handrail 7 is fixed via the pin 5B to the intermediate handrail receiver 6 which is removably attached via the pin 5A, and the handrail 7A is fixed to the upper end of the handrail column 4 via the pin 5C. It has a similar structure. By the way, when trying to move the rolling tower to a required location, the height of the entire rolling tower is lowered by lowering the handrail pillar 4 in order to avoid interference with obstacles such as beams existing in the direction of movement of the rolling tower. Sometimes it is necessary to lower the In this work, in order to avoid interference between the intermediate handrail receiver 6 that supports the intermediate handrail 7 and the handrail post support 3, first remove the four pins 5A to enable relative movement between the intermediate handrail receiver 6 and the handrail post 4. After that, remove the handrail pillar 4 and handrail 7 from the top of the work floor 2.
Pull out pin 5 while supporting A, etc., and then
A procedure such as lowering the handrail post 4 while sliding it on the handrail post holder 3 is required, but the operation of removing a total of eight pins in order to lower the handrail post 4 is complicated and , top working floor 2
It is not desirable for safety to carry out these operations while the intermediate handrail 7 is unstable (that is, the intermediate handrail receiver can move freely relative to the handrail post).

This invention was created in view of the above circumstances, and aims to facilitate the lowering operation of the handrail pillar as the rolling tower moves, and to improve work safety. In the present invention, a slide member is provided to be able to freely slide vertically on a plurality of handrail post holders provided perpendicularly to the upper end of the building frame, and the handrail post is fixed integrally and parallel to the slide member. The handrail post receiver and the handrail post are releasably connected to each other by an engaging member.

Hereinafter, the present invention will be explained based on an embodiment shown in FIGS. 3 to 6. In the figure, parts common to those of the conventional example are given the same reference numerals to simplify the explanation.

The building frame 1 of this rolling tower has four vertical columns 8, and cylindrical handrail column supports 3A are vertically fixed to the upper ends of the columns 8, respectively. A slide member 9 is inserted into the handrail post receiver 3A so as to be slidable in the axial direction, and the lower end of the handrail post 4A to 4D, which is substantially parallel to the slide member 9, is inserted into the slide member 9 so as to be slidable in the axial direction. are each fixed together. Further, an engaging member 10 called a worm pin as shown in FIG. 6 is inserted inside the slide member 9.
is composed of a spring material 11 curved into a U-shape, and pins 12 integrally provided at both ends of this spring material 11. This engaging member 10 is
As shown in FIGS. 5 and 6, the slide material 9
The relative movement between the handrail post holder 3A and the slide member 9 is regulated by passing the pin 12 through a hole 13 provided in the handrail post holder 3A and an engagement groove 14 provided in the handrail post holder 3A. . In addition, handrail support 3
A guide member 15 is provided at the lower end of A, and this guide member 15 is used when attempting to move the slide member 9 upward (that is, lifting up the handrail posts 4A to 4D) as shown in FIG. ), the tapered surface 1 provided on the inside
6 is brought into contact with the pin 12 of the engagement member 10 and pressed inward to guide it into the engagement groove 14,
The handrail post receiver 3A and the slide member 9 are engaged only by lifting the intermediate handrail 6 and the handrail 6A.

In addition, in the figure, the reference numeral 17 is a support handle, and this support handle 17 is attached to the handrail column 5A.
Two or two 5Ds are connected so that they can be operated as a unit. Further, reference numeral 18 is a disassembleable ramp for movement between the work floors 2 and 2A, reference numeral 19 is an opening/closing lid for access to and from the work floors 2 and 2A, and reference numeral 20 is the second work floor from the top. 2
This is a handle that a worker positioned above A can grasp to ensure stability during work.

Note that a plurality of support beams may be provided at intervals in the length direction of the pillars 8 for reinforcing the pillars 8 of the building frame 1 and for receiving the working floors 2, 2A, 2B.

When raising and lowering the handrail pillar in the rolling tower configured in this way, the following procedure is used.

() First, remove the ramp 18 above the second stage work floor 2A.

() While supporting the support handle 17, the handrail column 5A on the side connected to the support handle 17,
Remove the engaging member 10 of 5B. That is, while pressing the pin 12 of the engagement member 10 inward, the engagement between the pin 12 and the engagement groove 14 is released, and then,
While pulling the support handle 17, insert the handrail post holder 3A.
The handrail pillar 4 is moved relative to the slide member 9.
Lower A and 4B.

() In the same manner as in () above, remove the engaging members 10 of the handrail posts 4C and 4D on the opposite side, and remove the handrail posts 4
Lower C and 4D together.

In addition, when raising the handrail, the above ()
The operations from to () can be performed in reverse order, so their explanation will be omitted.

A series of these operations can all be performed from the second stage work floor 2A, and therefore, the worker can use the handle 20 etc. to perform handrail lifting and lowering operations while ensuring posture stability. .

Note that the structure of the engaging member 10 is not limited to the worm pin of the above-mentioned embodiment, and of course, for example, a normal pin may be used.

As is clear from the above explanation, the present invention is a mobile work scaffold in which a horizontally movable building frame is provided with a plurality of horizontal work floors. A vertical handrail post receiver is provided, and a vertically extending slide member is inserted into the handrail post receiver so as to be slidable up and down, the lower part of which is locked by an engaging member, and the slide member is inserted outwardly from the slide member. , a handrail post approximately parallel to the slide member is integrally connected to the slide member at its end, and each handrail post or slide member supports a handrail surrounding the uppermost work floor, and from this handrail Since all of the intermediate handrails located below are supported by the handrail pillars, the intermediate handrails do not interfere with the handrail post supports when lowering the handrail pillars, and therefore, the intermediate handrails are not easily moved relative to the handrail pillars. There is no need to make it relatively movable. Therefore, according to the handrail support mechanism of the mobile work scaffold of the present invention, when the handrail pillar is raised and lowered, each sliding member and each engaging member connecting the handrail pillar are moved under the uppermost work floor. Work can be carried out with a simple operation of attaching and detaching from the work floor, which has the effect of increasing work safety.

[Brief explanation of drawings]

Figures 1 and 2 show a conventional example of a mobile work scaffold, with Figure 1 being an overall perspective view, Figure 2 being a perspective view showing details of the handrail support part, and Figures 3 to 3. FIG. 6 shows an embodiment of the present invention.
Fig. 3 is an overall perspective view, Fig. 4 is a perspective view showing details of the handrail post holder, Fig. 5 is a perspective view showing details of the engagement portion between the handrail post holder and the slide member, and Fig. 6 is a vertical sectional view of the same part as FIG. 5; 1... Building frame, 2, 2A... Work floor, 3A... Handrail post support, 4A to 4D... Handrail post, 5A... Pin, 6... Intermediate handrail support, 7... Intermediate handrail, 7A
... Handrail, 9 ... Slide material, 10 ... Engagement member, 11 ... Spring material, 12 ... Pin, 13 ...
Hole, 14... Engagement groove, 17... Support handle.

Claims (1)

[Scope of utility model registration request] In a mobile work scaffold consisting of a horizontally movable building frame with multiple levels of horizontal work floors, vertical handrail post supports are provided at multiple locations around the top work floor, and the handrail post supports are A slide member extending in the vertical direction is inserted so as to be slidable up and down, the lower part of which is locked by an engaging member, and a handrail post approximately parallel to the slide member is attached to the outside of the slide member at its end. A handrail surrounding the uppermost work floor is supported by each handrail post or slide member, and intermediate handrails located below this handrail are all connected to the handrail post or slide member. A handrail support mechanism for a mobile work scaffold, characterized in that the handrail support mechanism is supported by.