JP4105049B2 - Lifting type moving scaffold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting and lowering type moving scaffold used for interior and exterior construction, etc., and includes a lower base body having wheels on a grounding surface and capable of being fixed at a predetermined place, a plurality of horizontal frames, and a movable upper floor having a work floor. A moving scaffold made of members, having a mechanism for preventing the falling of the moving scaffold, and with the lower base fixed at a predetermined position, the upper member is placed horizontally on the track and the extension track installed on the lower base. The present invention relates to a lifting and lowering movable scaffold having improved workability and safety, characterized in that it is movable in a direction and can be fixed at a predetermined position .
[0002]
[Prior art]
As described in Patent Document 1, as a lifting type moving scaffold that can move to a predetermined location and can freely adjust the height of the scaffold in a state where the working scaffold is fixed at that location, a plurality of steps are provided. One with a horizontal frame and work floor is known.
[0003]
FIGS. 9A and 9B are a side view and a front view, respectively, when a conventional lifting and lowering moving scaffold is started up. Ascending and descending of the scaffold is performed between the rectangular horizontal frames 40 adjacent to each other via an X-shaped slider crank 50 and between the uppermost horizontal frame 40 and the work floor 60 installed thereon. This is done by being foldably connected via an X-shaped slider crank 50. That is, when the slider crank 50 is raised, the entire horizontal frame is raised, and when the slider crank 50 is folded, the entire horizontal frame is lowered. Therefore, the work floor 60 installed on the uppermost horizontal frame moves up and down. Become.
[0004]
Each slider crank 50 has two slant members connected by a pin 51 at the center portion, and one end of each slant member is axially attached to the long side of the upper or lower frame 40 and the other end. Are attached so as to be slidable along the long side of the frame 40 at the other stage. The distance between the upper and lower frames is expanded and contracted by changing the crossing angle between the two diagonal members.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 6-36167 [0006]
[Problems to be solved by the invention]
The conventional lifting and lowering type moving scaffold can freely raise and lower the work floor, and can be freely changed in height and fixed during the raising and lowering. Therefore, the height can be freely adjusted according to the construction site, so that the workability is extremely good as long as it is installed on a flat place.
[0007]
However, this scaffold cannot be installed close to the construction site when there are obstacles such as gutters and foundation concrete under the construction site. Therefore, if there are such obstacles, it is unavoidable to install a scaffolding at a place away from the construction site, get out of the work floor and work on the construction site. There was also a problem with safety.
[0008]
The present invention is for solving such problems, and even when there are obstacles such as side grooves and foundation concrete under the construction site, it is possible to work safely while maintaining normal workability. It is an object of the present invention to provide a liftable moving scaffold.
[0009]
[Means for Solving the Problems]
The features of the liftable moving scaffold of the present invention are as follows.
[0010]
A moving scaffold comprising a lower base body equipped with wheels on the ground surface and fixable at a predetermined location, and a vertically movable upper member having a plurality of horizontal frames and a work floor, and having a mechanism for preventing the moving scaffold from falling, In a state where the lower base is fixed at a predetermined position , the upper member is movable in the horizontal direction on the track installed on the lower base and its extension track and can be fixed at the predetermined position.
[0011]
The present invention can employ the following embodiments (1) to (5) as necessary.
[0012]
(1) In order to make the upper member movable in the horizontal direction with the lower base body fixed in place, it is preferable to use a sliding mechanism or a rolling mechanism.
[0013]
As the sliding mechanism, for example, there is a mechanism that includes a track installed on the lower base and a sliding member on which the upper member is mounted and fixed, and the sliding member moves in the horizontal direction while the upper member is mounted on the track. Can be mentioned. In this case, it is preferable that a sliding material having a small coefficient of friction is attached to the lower surface of the sliding member so as to slide between the tracks. Further, it is preferable that the guide member is installed on the side surface of the track so that the slide member on which the upper member is placed and fixed does not come off from the track, or the slide member also serves as the guide member.
[0014]
As a rolling mechanism, for example, a wheel or a piece is attached to the lower part of a plate member on which the upper member is placed and fixed, and the plate member moves horizontally on the track installed on the lower base while the upper member is placed. Is mentioned. If necessary, the guide member can be installed so that the plate member on which the upper member is placed and fixed does not come off the track.
[0015]
(2) track, by annex extension trajectory in the form of overhanging a track from the lower substrate to the outside, can escape from the constraint that the upper surface of the lower substrate. Therefore, the horizontal range of movement of the upper member is not limited to the lower base, so even if the lower base is fixed in place, the upper member can be moved within the extension of the track. It is free without restrictions. Therefore, since the work floor attached to the upper member can be freely moved to a necessary place, the workability is excellent. The extension track may be simply attached to the lower base, but is preferably supported by a support column or the like.
[0016]
As a specific example of such a track, it may be a planar track or an I-shaped track used for a railroad rail. Alternatively, an H-shaped steel may be placed and the flange surface may be used as a raceway surface.
[0017]
In addition, although there is no restriction | limiting in particular as a means for fixing an upper member in a predetermined position after moving to a horizontal direction, It is preferable to use a volt | bolt etc.
[0018]
(3) The scaffold in which the upper member is movable in the horizontal direction has a high center of gravity, or the center of gravity may be detached from the lower base body, so that the entire scaffold may fall down. For this reason, a fall prevention mechanism is required.
[0019]
Examples of the fall prevention mechanism include installation of a support or installation of a weight on the lower base, but it is preferable to use a support. The strut can be used not only to prevent a fall but also as a support mechanism for the extended track. In addition, it is preferable to provide a wheel or a piece at the lower part of the support column because the support column can be moved sideways while the support column is standing. Further, it is preferable to provide a height adjusting mechanism such as a screw on the support column. If the height of the support can be adjusted freely, it will be possible to stand up even if there are obstacles such as foundation concrete under the support.
[0020]
(4) As an elevating mechanism for the upper member, it is preferable that the horizontal frames adjacent to each other in the upper and lower directions are connected so as to be foldable via an X-shaped slider crank.
[0021]
(5) A workable deck may be provided on the lower base.
[0022]
(6) The lower base may further have a pulling member.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0024]
FIG. 1 is a front view when a lower base body 20 of an elevating type moving scaffold according to an embodiment of the present invention is fixed at a predetermined place. Here, the upper member 30 is in a folded state. 2 is a front view when the lower base 20 is fixed at a predetermined position, but unlike FIG. 1, the upper member 30 is extended and a handrail is attached to the work floor 60. Show.
[0025]
Here, the structure of this raising / lowering type moving scaffold is demonstrated.
[0026]
First, the lower base 20 is a frame formed of two base frames 21 on the top and bottom and four pillars 23 installed between these four corners, and held in a rectangular parallelepiped shape by a reinforcing member 24. Wheels 25 with brake locks are attached to lower portions of the four corners of the lower base frame 21. Further, an outrigger 27 having a jack base 26 at the tip is attached to a side surface of each column, and is installed so as to be able to rotate in the horizontal direction around each column 23. Further, a track 81 is installed on the upper base frame 21 in the horizontal direction.
[0027]
Next, the upper member 30 is formed in a rectangular shape on a rectangular parallelepiped frame formed by two base frames 31 in the vertical direction and four pillars 32 installed between these four corners. The horizontal frames 40 are stacked in three stages, and the long sides of the frames in each stage are connected by an X-shaped slider crank (not shown). This basic structure is the same as that of the above-described lifting type scaffolding shown in FIG. 9, and there is no particular limitation on the number of stacked stages of the horizontal frame.
[0028]
A work floor 60 is attached to the uppermost horizontal frame 40 of the elevating unit via an X-shaped slider crank (not shown). Pipes 61 for handrail attachment are joined to the four corners of the work floor, and handrail pillars 62 are installed. Further, a handrail bar 63 is attached between the handrail pillars 62 to constitute a handrail. A baseboard 64 is attached to the work floor 60. These handrail components and the like can be easily assembled and disassembled at the work site.
[0029]
Further, on the track 81 installed on the lower base, a moving mechanism 85 with a brake lock is mounted so that the upper member can move in the horizontal direction (left and right direction in FIGS. 1 and 2) and can be fixed at a predetermined position. Is placed.
[0030]
FIG. 3 is an example of the moving mechanism with a brake lock, and is a view of a cross section of the moving mechanism 85 with a brake lock of FIG. 1 as viewed from the right side. Here, H-section steel is used as an example of the track.
[0031]
The H-shaped steel 70 is placed on the surface of the lower base 20, the lower flange 71 of the H-shaped steel is fixed on the lower base with bolts 72, and the upper surface of the upper flange 73 of the H-shaped steel is the upper member. Used as a trajectory for horizontal movement. Then, the column 32 of the upper member is fitted into the protrusion 75 provided on the sliding member 74, and the upper member is placed and fixed on the sliding member 74. On the lower surface of the sliding member, a nylon high moller (product) is used as the sliding member 76 so that the sliding member on which the upper member is placed and fixed can slide on the track using the flange surface of the H-shaped steel. Name: Shioya Kasei Co., Ltd.) is pasted. In this state, the upper member is moved to a predetermined position by sliding the sliding member on which the upper member is placed and fixed on the track using the flange surface of the H-shaped steel. After that, at a predetermined position, the U-shaped guide member 77 is fitted so as to wrap the sliding member on which the sliding material is attached from the side surface, and the upper member is prevented from coming off the track, and the bolt 78 is put into the predetermined position. Fix the upper member.
[0032]
In FIG. 4, the support 28 is disposed on the extension line of the track installed on the lower base, and after the extension track is horizontally installed between the lower base and the support, the extension track 82 is folded over. The state of the raising / lowering type moving scaffold when the upper member of the state which moved was moved to the horizontal direction is shown. Here, the example has been described in which the upper member is folded and moved horizontally on the track and the extended track installed on the lower base body. However, the upper member is extended and the track is extended horizontally on the track and the extended track. It is also possible to move in the direction.
[0033]
The column 28 is disposed on the extension line of the track installed on the lower base after the lower base is fixed at a predetermined position because the center of gravity of the upper member is located at the center of the lower base when the upper member is moved horizontally. This is because if it is not nearby, the entire lifting and lowering moving scaffold may fall. In this case, instead of providing the support column, a weight may be installed on the opposite side so as to balance the upper member.
[0034]
Although FIG. 4 shows the case where the extension track is provided on only one side on the right side, the extension track may be installed on the left side or on both the left and right sides.
[0035]
FIG. 5 shows a state after the upper member in the state of FIG. 4 is extended. Thus, even after the lower base is fixed at a predetermined position, the work floor can be brought close to the enforcement site, so that the work at the enforcement site directly above the obstacle 90 of the basic concrete as shown in FIG. Even so, it can be done safely and easily. Here, a column height adjusting screw 29 is provided so that the height of the column 28 can be adjusted according to the height of the obstacle 90.
[0036]
FIG. 7 shows an elevating moving scaffold in which a work deck 95 is further provided on the lower base. This lifting and lowering type moving scaffold can perform work such as inspection and operation at a relatively low construction site with this work deck. With such a work deck, work can be performed even when work such as height adjustment performed by the upper member does not reach the ground or is difficult to work depending on the height of the lower base. . In addition, a lifting ladder 96 can be installed on the work deck 95.
[0037]
FIG. 8 shows an elevating mobile scaffold in which the lower base further has a traction member. Since this elevating type moving scaffold has the tow portion 97, it can be moved by being pulled by a truck, an automobile or the like. The tire diameter of the wheel is usually 200 mm or less, but it is preferable to set the tire diameter of the wheel to 250 mm when it is desired to run on a rough road such as a gravel road. Further, it is preferable to install an impact relaxation material such as a damper or suspension on the wheel.
[0038]
【The invention's effect】
The lifting and lowering type moving scaffold of the present invention can move to a predetermined place, and the upper member having the work floor can be moved vertically and horizontally even after the lower base of the working scaffold is fixed at a predetermined position at that place. Since it is movable and can be fixed at a predetermined position, it can be performed safely and easily even in an operation site immediately above an obstacle such as foundation concrete or a groove. In addition, since the movable range of the upper member in the horizontal direction is not limited to the lower base, the workability is excellent also in this respect.
[0039]
[Brief description of the drawings]
FIG. 1 is a front view of an elevating type moving scaffold according to an embodiment of the present invention, showing a state in which a lower base is fixed at a predetermined position and an upper member is folded.
2 shows a state in which the lower base of the liftable moving scaffold shown in FIG. 1 is fixed at a predetermined position, the upper member is extended, and a work handrail is attached to the work floor.
3 is an enlarged cross-sectional view of an example of a moving mechanism with a brake lock, and is an enlarged view of the AA cross section of the moving mechanism 85 with a brake lock in FIG. 1 as viewed from the right side surface.
4 shows a state in which the lower base of the liftable moving scaffold shown in FIG. 1 is fixed at a predetermined position and the upper member is moved in the horizontal direction with the upper member folded.
FIG. 5 shows a state in which the lower base of the liftable moving scaffold shown in FIG. 1 is fixed at a predetermined position, and the upper member is extended and moved in the horizontal direction.
FIG. 6 shows the state of the liftable moving scaffold shown in FIG. 5 when working at the enforcement site directly above the obstacle in the foundation concrete.
FIG. 7 shows an embodiment in which a work deck is further provided on the lower base of the liftable mobile scaffold of the present invention.
FIG. 8 shows an embodiment in which the lower base of the liftable moving scaffold according to the present invention further has a traction member.
FIG. 9 shows a side view of the long side and a front view of the short side in a state where a conventional moving scaffold is extended.
[Explanation of symbols]
20 Lower Base 21 Lower Base Base Frame 23 Lower Base Column 24 Reinforcement Material 25 Brake Lock Wheel 26 Jack Base 27 Outrigger 28 Post 29 Post Height Adjustment Screw 30 Upper Member 31 Upper Member Base Frame 32 Upper Member Column 40 Horizontal frame 50 Slider crank 51 Pin 60 Work floor 61 Handrail mounting pipe 62 Handrail pillar 63 Handrail bar 64 Skirting board 70 H-section steel 71 H-shaped steel lower flange 72 H-section steel fixing bolt 73 H Upper flange of shape steel 74 Sliding member 75 Projection portion 76 Sliding member 77 Guide member 78 Upper member fixing bolt 81 Track 82 Extended track 85 Moving mechanism 95 with brake lock Work deck 96 Lifting ladder 97 Traction portion

Claims (6)

A moving scaffold comprising a lower base body having wheels on the ground surface and fixable in a predetermined place, and a vertically movable upper member having a plurality of horizontal frames and a work floor, and having a mechanism for preventing the moving scaffold from falling, An elevating type characterized in that the upper member is movable in the horizontal direction on the track installed on the lower substrate and the extension track thereof and can be fixed at the predetermined position while the lower substrate is fixed at a predetermined position. Moving scaffold. 2. The liftable moving scaffold according to claim 1, wherein the movable range of the upper member in the horizontal direction is not limited to the lower base.   The elevating mobile scaffold according to claim 1 or 2, wherein a support is used as a support mechanism for the fall prevention mechanism of the scaffold.   4. The upper member can be moved up and down by horizontally connecting adjacent horizontal frames via an X-shaped slider crank. 5. Lifting type moving scaffold.   The lifting and lowering movable scaffold according to any one of claims 1 to 4, wherein a workable deck is provided on the lower base in addition to the work floor of the upper member.   The elevating movable scaffold according to any one of claims 1 to 5, wherein the lower base has a pulling member.

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