JPH10231617A - Transferable working scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transferably use this scaffold for both flat floor face at a constructive site and floor face having a large recess such as a deck plate, by detachably exchanging casters and sleighs against the legs of a support frame supporting the working floor at a required height. SOLUTION: This scaffold is constituted of a working floor 15 for workers, a support frame 10 supporting the working floor 15 at a required height, and a pair of casters 24 and a pair of sleighs 26 detachably fitted to the legs 20 arranged at the lower end of the support frame 10. When the scaffold is used on a flat floor face, the casters 24 are fixed to the support plates 23 of the lower end of the legs 20 through upper base plates 25. When it is used on a deck plate having a groove or a recess in which the casters 24 drop, the casters are removed from the legs 20 and exchanged to a pair of right and left sleighs 26 made by bending a steel pipe to form an arcuate plane and fixed to the support plates 23 of the legs 20 through the upper base plate 28 of the sleighs 26. In this way, the sleighs 26 are put on the deck plate 30 and slid to transfer the scaffold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable work scaffold used at a construction site of a building and the like, and can be stably installed on both a flat floor and a floor having large unevenness such as a deck plate. It is made possible.

[0002]

2. Description of the Related Art A work floor and a support frame for supporting the work floor at a desired height are provided. Various types of scaffolds are known, such as those in which the above-mentioned support frame is formed so as to be adjustable in height, and those in which the support frame is formed so as to be foldable. The casters were fixed to the legs. Therefore,
When moving the above work platform on a flat floor or ground, there is no problem.However, if there is a large groove-shaped recess such as a deck plate and the caster falls down, just stand still. If possible, the movement was almost impossible.

[0003]

SUMMARY OF THE INVENTION The present invention provides a working movable scaffold which can be used on a flat floor surface of a construction site or a floor surface having a large recess like a deck plate. Things.

[0004]

According to a first aspect of the present invention, there is provided a working movable scaffold for working on a work floor for supporting a worker, and for supporting the work floor at a desired height. It is characterized by comprising a support frame, a set of casters and a set of sledges detachable from the lower end of the support frame, and enabling the casters and sleds to be replaced and used.

[0005] The above-mentioned working scaffold is used on a flat floor by moving a caster attached to a leg portion or standing at a desired position. On the other hand, when using on a floor having a large recess, such as a deck plate, into which the caster falls, the caster is replaced with a sled. In other words, by replacing the casters with sledges, it becomes possible to easily get over the large grooves or recesses where the casters fall down with sledges, and the scaffold can be easily moved and settled.

The sleds described above need only be long enough to get over the grooves or recesses at the work site, and may be mounted one at a time at the four lower corners of the support frame in the same manner as casters. A long span extending over two legs at both front and rear ends or at both left and right sides of the support frame, as described in claim 2;
Preferably, it is formed in an arcuate plane shape, in which case,
Since the sled is attached across the two legs, its fixation is assured, and since it is curved into an arcuate planar shape, the curvature radius is set so that it can be set in either the front-rear direction or the left-right direction. Movement becomes possible. By extending both ends of the sled, stability is increased as in the case where an outrigger is provided.

According to the third aspect of the present invention, the sled is made of a steel pipe, and both ends in the length direction can be flattened so as to float from the lower surface of the sled by, for example, squeezing. Can be manufactured relatively easily and inexpensively, and the sleds float on the floor as much as the both ends are flattened, so that when the sled slides on the floor and moves, it does not get caught. Movement becomes easy.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support frame 10 for a working moving scaffold shown in FIG.
1, two pipe supports 11 on the front side (left side in FIG. 1) are connected by four horizontal stays 12 arranged vertically, and two ladder-shaped front frames and two on the rear side (right side in FIG. 1). Pipe supports 11 are connected by four horizontal stays 12 arranged vertically to form ladder-shaped rear frames. The front and rear two pipe columns 11 on the front side of the paper are connected by a pantograph composed of four links 13, and the two front and rear pipe columns 11 on the back side of the paper are connected by a pantograph composed of four links 13. The space between the frame and the rear frame is formed to be stretchable.
That is, the support frame 10 is formed to be able to expand and contract in the front-rear direction and be foldable. In order to fix the pantograph in a state where the pantograph is extended to a predetermined length, the upper and lower ends of the two pipe posts 11 arranged in front and rear are connecting rods (not shown).
Is connected detachably.

A work floor 15 straddling the horizontal stay 12 at the upper end of the front frame and the horizontal stay 12 at the upper end of the rear frame has a pair of left and right hooks (not shown) fixed to the front edge and the rear edge, respectively. It is detachably attached to the horizontal stay 12 by hanging it from above. Also, two pipe supports 1 arranged front and rear on the paper front side and the paper back side, respectively.
A lower end of a handrail 16 curved in an inverted U shape is detachably inserted into an upper end of the first handrail 1.

On the other hand, the lower leg portion 20 is formed by bending a steel pipe into an inverted U-shape wider than the front frame and the rear frame, and a pair of right and left rod-like members projecting upward from the horizontal portion. The upper end of the support 21 is inserted into the lower end of the pipe support 10, and the height of the work floor 15 is adjusted by the insertion length. The front and rear legs 20 are detachably connected by a pair of left and right connecting rods 22 (see FIG. 2). And
A rectangular support plate 23 is provided at the lower left and right ends of the inverted U-shaped leg 20.
Are fixed in a horizontal flange shape, and the upper substrate 25 of the caster 24 or the upper substrate 28 of the sled 26 is detachably fixed to the lower surface of the support plate 23 by a plurality of bolts 29 (see FIG. 2).

In this embodiment, the sled 26 is formed by bending a steel pipe into an arcuate planar shape and forming one set of two right and left. In other words, the sled 26 is connected to the front and rear legs 20.
The board 28 is fixed in the form of a horizontal flange on the upper end of a supporting leg 27 projecting from the upper surface of both front and rear ends, and the board 28 is fixed to the support plate 23 at the lower end of the support frame 10. Removably attached to the lower surface. The front and rear ends of the sled 26 are squeezed up and down to form a wedge-shaped tip 26a as shown in FIG. 2, so that the tip floats from the floor. The sled 26 is mounted so as to protrude outward in the width direction (see a solid line in FIG. 3) or to protrude inward (see a chain line in FIG. 3).

When the working scaffold shown in FIG. 1 is used on a flat floor, the support plate 23 at the lower end of the leg 20 is used.
The caster 24 is fixed via an upper substrate 25, and the above-mentioned scaffold is moved by the rotation of the caster 24, stopped at a desired position, and an operator rides on the work floor 15 to perform work at a high place. On the other hand, when used on the deck plate 30 shown in FIG. 2, the casters 24 are removed from the legs 20 and replaced with a pair of left and right sleds 26, and the sleds 26 are put on the deck plate 30 and slid. Move. In this case, by setting the radius of curvature of the sled 26 appropriately, the sled 26 is prevented from falling into the groove of the deck plate 30 even if the front-rear direction of the work moving scaffold is aligned with the groove direction of the deck plate 30. Is done. Therefore, the deck plate 30
The above scaffold can be moved in any direction and allowed to stand still. When the radius of curvature of the sled 26 is increased to make the plane shape straight or close to a straight line, the front-back direction of the scaffold is directed at right angles to the groove direction of the deck plate 30 as shown in FIG. Thereby, it can be moved back and forth and right and left.

In the above embodiment, the wedge-shaped tip portions 26a are formed at both front and rear ends of the sled 26.
The tip does not catch on the protrusion on the floor when sliding. As shown by the chain line in FIG. 3, when the sled 26 is mounted in a convex shape on the inside, when the wall of the work site is present, the side surface of the work movable scaffold is easily brought close to the wall. Further, when both ends of the sled 26 are extended and attached in a convex shape inward, the end of the sled 26 functions as an outrigger, and the stability of the work movable scaffold placed on the floor is improved.

[0014]

The work-use scaffold according to the present invention can be used by replacing casters and sledges. Therefore, when used on a flat floor, the casters are attached, and when used on a deck plate, the casters are used. By replacing the sled with the sled, it can be moved smoothly in any case, and the stability at the time of standing still is good, and the work at high places can be performed safely. In particular, in the second aspect of the present invention, the sled is securely fixed, and can be moved in any of the front-rear direction and the left-right direction. According to the third aspect of the present invention, when the sled is used, the tip does not catch on the protrusion on the floor, the sled can be easily manufactured, and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a sled is attached.

FIG. 3 is a plan view of a sled mounting portion.

[Explanation of symbols]

10: support frame 11: pipe support 12: horizontal stay 13: link forming a pantograph 15: work floor 20: inverted U-shaped leg 21: rod-shaped support 24: caster 26: sled 26a: wedge-shaped tip

Claims (3)

[Claims] 1. A work floor on which an operator is mounted, a support frame for supporting the work floor at a desired height, a set of casters detachable from legs at the lower end of the support frame, and A work movable scaffold comprising a pair of sleds, wherein the casters and the sleds can be replaced and used. 2. The work movable scaffold according to claim 1, wherein the sled is formed in a long, arcuate planar shape extending over two legs at both front and rear ends or both right and left sides of the support frame. 3. The moving scaffold according to claim 1, wherein the sled is made of a steel pipe, and both ends in the length direction are flattened so as to float from the lower surface of the sled.