JP3980766B2 - Mobile suspension scaffold device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile suspension scaffold device for performing maintenance work on structures such as elevated roads and railway viaducts supported by piers, and in particular, so that continuous work can be performed through the pier opening. The present invention relates to a mobile suspension scaffold device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a mobile suspension scaffold device is generally known as a scaffold device for performing maintenance work for maintenance inspections on structures such as elevated roads and railway viaducts (see Japanese Patent Publication No. 5-54551).
[0003]
The mobile suspension scaffold device includes a plurality of (in general, a pair of left and right) hanger rails fixed to the lower surface side along the longitudinal direction of an elevated road or a railway viaduct, and longitudinally along these hanger rails. A plurality of movable suspension machines, a plurality of second suspension machines suspended by each suspension machine, and a plurality of guide rails suspended relative to each second suspension machine It is comprised with the scaffold deck etc. which can move to the left-right direction orthogonal to the said hanger rail. In this mobile suspension scaffold device, the scaffold deck suspended under the elevated road and the railway viaduct can be moved back and forth, and left and right, so that maintenance work such as the elevated road and the railway viaduct can be performed in the width and longitudinal directions. Can be done.
[0004]
Here, the elevated road and the railway viaduct in which the mobile suspension scaffold is used are supported by a plurality of bridge piers arranged at predetermined intervals along the longitudinal direction, and each pier is generally an elevated road or railway. Although located within the width of the viaduct, each pier is provided with a relatively large opening.
[0005]
By the way, in the conventional mobile suspension scaffold device, the scaffold deck is installed in a direction extending in the width direction of the elevated road or the railway viaduct, and the length is generally larger than the left and right width of the opening portion of the pier. Therefore, it cannot pass through the opening of each pier. For this reason, the maintenance work using the conventional mobile suspension scaffold device has to be performed for each bridge pier of the elevated road or the viaduct for the railway, and there is a problem that the work efficiency is extremely low.
[0006]
Therefore, the present applicant continues the maintenance work in the width direction and the longitudinal direction for structures such as elevated roads and railway viaducts supported by the piers without passing through the pier openings and separating them between each pier opening. Proposed a mobile suspension scaffold device that can be carried out automatically (JP-A-8-42133).
[0007]
As shown in FIG. 1 used in the description of the present invention, the proposed apparatus includes, for example, a pair of left and right hanger rails 1 suspended along the longitudinal direction of a railway viaduct, and hanger rails 1. It is movable along the ring-shaped hanger rail 3 and the ring-shaped hanger rail 3 that is suspended in a substantially horizontal posture by the upper-stage lifter. Suspended and suspended by four suspension suspension machines 4 provided in the front and rear, left and right, four lower and left and right suspension machines 5 suspended by the suspension suspension machine 4, and suspended by the lower suspension machine 5. The scaffold deck 6 is provided, and the scaffold deck 6 can be swiveled in the horizontal plane along the ring-shaped hanger rail 3 to set the orientation of the scaffold deck so that it can pass through the pier opening. Along with being able to move along To allow movement in the width direction and longitudinal direction so as to enable continuously without cutting the maintenance work for each between the pier for Built thereof.
[0008]
[Problems to be solved by the invention]
By the way, when the maintenance work is performed by using the structure proposed above without breaking the piers in the longitudinal direction and width direction of the structure, it is necessary to prepare tools and devices according to the contents of the maintenance work. Maintenance work is not interrupted and maintenance workability is improved.
However, preparing the above-mentioned tools and devices as much as necessary and placing them on the scaffolding deck may cause work interruptions or fall accidents.
Therefore, it is possible to suspend a gondola that can move up and down at the bottom of the scaffolding deck, and mount the above tools and devices on the gondola, but when the gondola is suspended from the scaffolding deck, As the weight increases, the weight balance acting on the scaffolding deck deteriorates, and the load applied to the upper, middle and lower suspension machines may become unbalanced.
[0009]
An object of the present invention is to provide a mobile suspension scaffold device having a configuration capable of further improving the maintenance workability in the proposed structure.
[0010]
[Means for Solving the Problems]
In order to achieve this object, the invention described in claim 1 includes a plurality of hanger rails suspended along the longitudinal direction below the structure supported by the pier and through the opening of the pier, A plurality of upper suspension machines that are movable along the respective hanger rails, and have a diameter dimension equal to or smaller than the left and right width of the pier opening, and are suspended in a substantially horizontal posture by the upper suspension machines. A ring-shaped hanger rail that can pass through the opening, a plurality of middle-stage suspension machines that are movable along the ring-shaped hanger rail, and each of the middle-stage suspension machines is rotatably suspended about a vertical axis. A plurality of lower suspension machines, and a plurality of guide rails having a width dimension equal to or smaller than the left and right widths of the pier opening and being relatively movably supported by the lower suspension machines. Around the center of the ring-shaped hanger rail A scaffold deck that can be freely suspended and passed through the opening of the pier, a wire hung on a rolling wheel disposed at four corners in the lower portion of the scaffold deck, and one of the opposing positions of the wire A gondola that is integrally suspended and supported at the other of the opposed positions of the wire, and a weight having a load corresponding to the weight of the gondola, and the gondola moves. The weight moves relative to the gondola in conjunction with the pulling movement of the wire.
[0011]
According to a second aspect of the present invention, there is provided the mobile suspension scaffolding device according to the first aspect, wherein the gondola is capable of meshing with rack teeth arranged in parallel at a lower portion of the longitudinal surface of the scaffold deck and the pinion teeth. And a suspension part provided with a suspension support part for the gondola. The suspension part comprises: a drive part provided with a rotational drive means; and a pinion wheel that is connected to both sides of the rack tooth in the extending direction across the drive part and meshes with the rack tooth. It is characterized by being supported by.
[0012]
[Action]
In the first aspect of the present invention, a plurality of hanger rails, a plurality of upper suspension machines, a ring-shaped hanger rail, a plurality of middle suspension machines, and a plurality of lower suspension machines are provided below the structure to be maintained. Scaffolding deck is suspended through a holding machine. The scaffold deck moves along the longitudinal direction of the structure by moving each upper suspension machine along each hanger rail, and each middle suspension machine moves along the ring-shaped hanger rail. By turning around the center of the ring-shaped hanger rail, each guide rail can move in the longitudinal direction by moving relative to each lower stage suspension machine. As a result, when the scaffold deck is swung around the center of the ring-shaped hanger rail and the longitudinal direction thereof is aligned with the longitudinal direction of the structure, and in this state, the scaffold deck is moved together with the ring-shaped hanger rail. Can pass through the pier opening.
Moreover, since the gondola and the weight move relative to each other on the wire wound around the wheels arranged at the four corners of the scaffold deck at the lower part of the scaffold deck, regardless of the position of the gondola, The weight balance can be kept from becoming unbalanced.
[0013]
In the invention according to claim 2, the gondola is suspended and supported by the suspension part having a pinion ring meshing with the rack teeth provided at the lower part of the scaffolding deck, and the suspension part is connected to the drive part, thereby driving. When the unit is driven, the gondola can be moved to a desired position along the rack teeth, and further, the wire is pulled in conjunction with the movement of the gondola, so that the gondola can move to a position relative to the gondola of the weight. .
[0014]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, the configuration shown in Japanese Patent Application Laid-Open No. 8-42133, which is a prerequisite technology targeted by the embodiment of the present invention. Then, the details of the embodiment of the present invention will be described.
FIG. 1 shows an overall schematic structure of a mobile suspension scaffold according to an embodiment in which a general railway viaduct is a subject of maintenance work. In FIG. 1, reference numeral 1 denotes a longitudinal direction of a railway viaduct described later. A pair of left and right hanger rails suspended below, reference numeral 2 represents four front and rear left and right upper suspension machines movable along the respective hanger rails 1, 1, and reference numeral 3 represents the upper suspension machines 2. Ring-shaped hanger rails that are suspended in a horizontal posture, reference numeral 4 is four middle-stage suspension machines 4 that are movable along the ring-shaped hanger rail 3, front and rear, left and right, and reference numeral 5 is suspended on each middle-stage suspension machine 4. Four lower suspension machines, front, rear, left and right, and a reference numeral 6 indicate scaffolding decks suspended by the respective lower suspension machines 5.
[0015]
As shown in FIG. 2 in an enlarged manner, the hanger rails 1 and 1 have an inverted T-shaped cross-sectional shape in which the rail portions 1b and 1b protrude in the left-right direction from the lower end of the support portion 1a extending in the vertical direction. The rack teeth 1c formed in a continuous waveform in the side view are attached to the lower surfaces of the rail portions 1b and 1b along the longitudinal direction thereof. A plurality of locking holes 1d are formed in the upper portion of the support portion 1a at intervals of approximately 150 cm along the longitudinal direction, and the hooks 7a at the lower end of the chain 7 are engaged with the locking holes 1d. Thus, the hanger rail 1 is suspended in a horizontal state by a plurality of chains 7.
[0016]
In addition, the upper suspension machine 2 has four front and rear left and right flanged wheels 2b rotatably supported in the casing 2a and rolls on the rail portions 1b and 1b of the hanger rail 1 along the hanger rail 1. The wheel portions 2b and 2b of the left and right flanged wheels 2b and 2b sandwich the rail portions 1b and 1b of the hanger rail 1 to prevent the wheel from being removed. A connecting pin 2d is horizontally mounted on the lower part of the casing 2a of the upper stage lifting machine 2, and the connecting pin 2d penetrates the coupling 9 that is rotatably engaged with the upper end of the suspension rod 8 about the vertical axis. This is suspended so as to be rotatable around the horizontal axis.
[0017]
Here, among the four upper suspension machines 2 in the front, rear, left and right directions, at least one upper suspension machine 2 has a pinion wheel 2e meshing with the rack teeth 1c of the hanger rail 1 through a central shaft 2f. The driven gear 2g is fixed to the central shaft 2f. Correspondingly, a drive handle 2i having a pinion gear 2h meshing with the driven gear 2g is rotatably supported by the casing 2a. By manually driving the drive handle 2i, the pinion wheel 2e rotates at a reduced speed. Thus, it rolls on the rack teeth 1 c, and thus the upper stage suspension machine 2 travels along the hanger rail 1. Further, in order to lock the upper suspension machine 2 to the hanger rail 1 and restrict its movement, the casing 2a is formed with an insertion hole 2j of the lock pin 10 that engages with the rack teeth 1c of the hanger rail 1. Has been.
[0018]
On the other hand, the ring-shaped hanger rail 3 is set to have a diameter dimension that is larger than the distance between the pair of left and right hanger rails 1 and 1 and smaller than the left and right width of the opening of the pier supporting a general railway viaduct. 2 and 3, as shown in an enlarged manner in FIG. 2 and FIG. 3, it has an inverted T-shaped cross section having a support portion 3a and rail portions 3b and 3b similar to the hanger rail 1, and is provided on the lower surface of the rail portions 3b and 3b. The rack teeth 3c formed in a continuous waveform are attached along the longitudinal direction. One locking hole 3d is formed in the upper portion of the support portion 3a at positions equally spaced in the circumferential direction. Such a ring-shaped hanger rail 3 is inserted into the notch groove 8a at the lower end of each suspension rod 8 suspended on each upper suspension machine 2 with the support portions 3a inserted into the notch grooves 8a. The bolts 11 that pass through the respective locking holes 3d are attached to the lower ends of the suspension rods 8 and fixed by the nuts 12, so that the suspension rods 8 are suspended in a substantially horizontal posture. .
[0019]
Further, each middle stage suspension machine 4 movable along the ring-shaped hanger rail 3 has substantially the same structure as the upper stage suspension machine 2, and the casing 2a, the flanged wheel 2b, and the connecting pin 2d. Corresponding to the casing 4a, the flanged wheel 4b, and the connecting pin 4d. The connecting pin 4d passes through the coupling 14 rotatably engaged with the upper end of the suspension rod 13 around the vertical axis. Hanging around the horizontal axis.
[0020]
Here, at least one of the middle suspension machines 4 corresponds to the pinion wheel 2e, the central shaft 2f, the driven gear 2g, the pinion gear 2h, the drive handle 2i, and the insertion hole 2j. The pinion wheel 4e, the central shaft 4f, the driven gear 4g, the pinion gear 4h, the drive handle 4i, and the insertion hole 4j are provided, and the drive handle 4i is manually rotated to drive along the ring-shaped hanger rail 3. It has become.
[0021]
Each of the middle-stage suspension machines 4 does not have a pinion wheel 4e, and a ring-like shape is obtained by simply rolling the front and rear, left and right flanged wheels 4b on the rail portions 3b and 3b of the ring-shaped hanger rail 3. It is good also as a structure which can move freely along the hanger rail 3, and in that case, the rack tooth 3c attached to the ring-shaped hanger rail 3 can omit this.
[0022]
Each of the lower suspension machines 5 has a structure substantially similar to that of the upper suspension machine 2, and includes a casing 5a, a flanged wheel 5b, and a connection pin 5d corresponding to the casing 2a, the flanged wheel 2b, and the connection pin 2d. And the connecting pin 5d penetrates the lower end of the suspension rod 13 and is connected to the suspension rod 13, so that the lower suspension machine 5 is placed on the suspension rod 13 in the direction opposite to the upper suspension machine 2 in the horizontal direction. Suspended freely around.
[0023]
Here, of the lower suspension machines 5, at least one lower suspension machine 5 corresponds to the pinion wheel 2e, the central shaft 2f, the driven gear 2g, the pinion gear 2h, the drive handle 2i, and the insertion hole 2j. And a pinion wheel 5e, a center shaft, a driven gear, a pinion gear, a drive handle, and an insertion hole 5j (not shown).
[0024]
On the other hand, as shown in FIGS. 3 to 5, the scaffold deck 6 includes a pair of left and right truss beams 6c and 6c each having an upper edge constituted by a guide rail 6a and a lower edge constituted by a pipe material 6b, and the pipe. It is provided with a large number of scaffolding plates 6e that are spread along the longitudinal direction of the truss beams 6c, 6c by being hooked between the members 6b, 6b via hooks 6d, 6d, and the total length thereof is for maintenance work. Corresponding to the full width of the viaduct, the full width is set to be narrower than the left and right width (for example, approximately 4.9 m) of the opening of the bridge pier that supports the viaduct for railway use.
[0025]
Here, the pair of left and right guide rails 6a and 6a constituting the upper edge of the scaffold deck 6 corresponds to the lower stage suspension 5 and the rail portions 6g and 6g are left and right from the upper end of the support portion 6f extending in the vertical direction. Rack teeth 6h, 6h, each having a T-shaped cross section projecting in the direction, are formed on the upper surfaces of the rail portions 6g, 6g along the longitudinal direction. In such a pair of left and right guide rails 6a, 6a, the lower surfaces of the rail portions 6g, 6g ride on the flanged wheels 5b of the lower suspension machine 5, and the rack teeth 6h mesh with the pinion wheels 5e. In the state, each is suspended by two lower suspension machines 5 in the front and rear, the drive handle (not shown) of the lower suspension machine 5 is manually rotated, the pinion wheel 5e is rotated at a reduced speed, and the rack teeth 6h are sent. Thus, the guide rails 6a and 6a are moved relative to the lower suspension machines 5 together with the scaffold deck 6 in the longitudinal direction.
[0026]
Next, an embodiment of the present invention will be described with respect to the configuration of the suspension scaffold device.
The mobile suspension scaffold device according to the embodiment of the present invention is characterized in that a gondola and a weight capable of moving in a relative direction are provided in the lower part of the scaffold deck 6.
That is, FIG. 5 is a schematic diagram showing the lower part of the scaffold deck 6. In FIG. 5, pillar members 14 integrated with the truss beams 6 c are provided at the four corners of the lower surface of the scaffold deck 6. In the vicinity of the lower end of the member 14, the wheel 15 is fixed.
Wires 16 (members indicated by alternate long and short dash lines in FIG. 5) are connected to the rollers 15, each of which is connected to a gondola and weight suspension support member described later.
A plurality of girder members 17 integrated with the lower peripheral surface of the pipe member 6b are fixed to the lower part of the scaffold deck 6 along the longitudinal direction of the scaffold deck 6, and the lower surface of the girder member 17 is shown in FIG. Similar to the ring-shaped hanger rail 3 shown, a gondola hanger rail 18 with rack teeth (denoted by reference numeral 3 c ′) facing downward is provided along the longitudinal direction of the scaffold deck 6.
[0027]
Although not shown, the gondola 19 is configured by a housing having a space in which a working machine used for maintenance work can be accommodated, and the ceiling portion is suspended and supported.
In order to move the gondola 19 along the longitudinal direction of the scaffold deck 6 with the suspension supported, the gondola hanger rail 18 has the same configuration with respect to the upper suspension machine 2 except for the configuration related to the drive handle. The drive unit 20 provided, and the suspension unit 22 connected to both sides of the drive unit 20 via the horizontal shaft 21 with respect to the drive unit 20 and having the lower suspension machine 5 turned upside down are included in the pinion The wheel is provided by meshing with rack teeth formed on the gondola hanger rail 18.
The drive unit 20 is provided with a reduction gear mechanism 23 for rotationally driving a pinion wheel (corresponding to a member denoted by reference numeral 2e in FIG. 2) instead of the drive handle 2i in the upper stage suspension machine 2. A gear (not shown) provided on the output shaft of the driving means 24 such as an electric motor is engaged with the input side of the gear mechanism 23. The drive means 24 is electrically connected to an operation switch (not shown) disposed on the scaffold deck 6 side. The operation switch is connected to a power source mounted on the gondola 19 to control power supply to the driving unit 24. In the operation switch, the moving direction of the driving means and the power supply on / off command can be issued.
[0028]
Each end of the wire that bypasses each wheel 15 is fixed to the suspension part 22 located on both sides of the drive part 20.
On the other hand, the wire 15 bypasses each wheel 15, but is divided at a position facing the gondola 19 across the center of the ring-shaped hanger rail 3, and each divided end portion is a weight suspension portion 25. It is fixed to both ends.
The weight suspension part 25 has the same configuration as the suspension part 22 intended for the gondola 19, and a weight 26 having a load balanced with the total weight of the gondola 19 is suspended and supported on the lower surface thereof. The total weight of the gondola 19 in this case refers to the weight including the mounted equipment.
[0029]
Since the present embodiment is configured as described above, a pair of left and right hanger rails 1 and 1 are suspended along the railroad viaduct with respect to the railroad viaduct, which is a target structure for maintenance work.
[0030]
Thus, below the railway viaduct, a pair of left and right hanger rails 1, 1, front and rear left and right upper suspension machines 2, ring-shaped hanger rail 3, front and rear left and right middle suspension machines 4, front and rear left and right lower suspension machines 5 The scaffold deck 6 is suspended along the longitudinal direction of the railway viaduct as each upper suspension machine 2 moves along the pair of left and right hanger rails 1, 1. Each of the middle-stage suspension machines 2 moves along the ring-shaped hanger rail 3 to turn around the center of the ring-shaped hanger rail 3, and a pair of left and right guide rails 6 a and 6 a are connected to each lower-stage suspension machine 5. Is moved in the longitudinal direction by relative movement.
[0031]
In the maintenance work of the railway viaduct, between the bridge piers, the scaffold deck 6 is turned around the center of the ring-shaped hanger rail 3 so that its longitudinal direction is perpendicular to the pair of left and right hanger rails 1, 1. The deck 6 is moved along the pair of left and right hanger rails 1 and 1. By doing so, the scaffold deck 6 moves in the longitudinal direction of the railway viaduct in a state where the longitudinal direction is along the width direction of the railway viaduct. Maintenance work on the lower surface can be performed sequentially along the longitudinal direction over its entire width.
[0032]
Further, in this state, if the guide rail 6a is moved relative to the lower suspension machines 5 and the scaffold deck 6 is moved in the longitudinal direction, the scaffold deck 6 can greatly overhang beyond the lateral width of the railway viaduct. Maintenance work on both sides of the viaduct can be done easily.
[0033]
Further, between the bridge piers, the scaffold deck 6 can be swung around the center of the ring-shaped hanger rail 3 by an arbitrary angle. For example, if the scaffold deck 6 is rotated halfway at a predetermined position, a large circle drawn by the trajectory of the scaffold deck 6 is drawn. It is possible to perform maintenance work on the lower surface of the railway viaduct for an area corresponding to.
[0034]
When an operator who is on the scaffold deck 6 intends to move the position of the gondola 19, the driving means 24 is driven by the operation switch to move the gondola 19 to a desired position. In this case, the suspension part 22 moves in accordance with the movement of the driving unit 20 according to the driving direction of the driving means 24, and the wire 16 is pulled in conjunction with this movement. For this reason, the weight suspension 25 that faces the gondola 19 across the center of the ring-shaped hanger rail 3 always moves to a position opposite to the gondola 19 across the center, so the position of the gondola 19 changes. In this case, the weight balance of the scaffold deck 6 can be balanced, and the scaffold deck 6 does not incline inadvertently.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, a plurality of hanger rails, a plurality of upper hangers, a ring-shaped hanger rail, and a plurality of middle hangers are provided below the structure to be maintained. , The scaffold deck is suspended through a plurality of lower suspension machines. The scaffold deck moves along the longitudinal direction of the structure by moving each upper suspension machine along each hanger rail, and each middle suspension machine moves along the ring-shaped hanger rail. By turning around the center of the ring-shaped hanger rail, each guide rail can move in the longitudinal direction by moving relative to each lower stage suspension machine. As a result, when the scaffold deck is swung around the center of the ring-shaped hanger rail and the longitudinal direction thereof is aligned with the longitudinal direction of the structure, and in this state, the scaffold deck is moved together with the ring-shaped hanger rail. Can pass through the pier opening.
Moreover, since the gondola and the weight move relative to each other on the wire wound around the wheels arranged at the four corners of the scaffold deck at the lower part of the scaffold deck, regardless of the position of the gondola, The weight balance can be kept from becoming unbalanced. As a result, equipment necessary for maintenance work can be prepared at a position close to the maintenance work location, so that many work contents can be handled without interrupting maintenance work, and these equipment are prepared. The safety of maintenance work can be ensured by eliminating the imbalance of the weight that acts on the scaffolding deck in the case of having the configuration to do so.
[0036]
According to the second aspect of the present invention, the gondola is suspended and supported by the suspension part having the pinion ring meshing with the rack teeth provided at the lower part of the scaffold deck, and the suspension part is connected to the drive part. When the drive unit is driven, the gondola can be moved to a desired position along the rack teeth, and the weight is moved to a position relative to the gondola by pulling the wire in conjunction with the movement of the gondola. Can do. As a result, the weight balance of the scaffolding deck can be balanced by automatically moving the weight to the position facing the gondola in conjunction with the movement of the gondola, so that the worker can improve the safety in maintenance work one by one. It can be secured without confirmation.
[Brief description of the drawings]
FIG. 1 is a skeleton perspective view showing an overall schematic structure of an embodiment of a mobile suspension scaffold according to the present invention.
FIG. 2 is a front cross-sectional view showing the connection structure of the upper suspension machine and the ring-shaped hanger rail in the mobile suspension scaffold according to the embodiment of the present invention.
FIG. 3 is a side view with a partial cross section showing a structure of a middle stage suspension machine, a lower stage suspension machine, and a scaffold deck in a mobile suspension scaffold according to an embodiment of the present invention, and a connection structure thereof.
FIG. 4 is a partial perspective view of a scaffold deck in a mobile suspended scaffold device according to an embodiment of the present invention.
FIG. 5 is a schematic diagram for explaining a main configuration of a mobile suspension scaffold device according to an embodiment of the present invention.
[Explanation of symbols]
1 Hanger rail
1a Supporting part
1b Rail part
1c rack teeth
1d Locking hole
2 Upper stage lifting machine
2a casing
2b Wheel with flange
2c Flange
2d connecting pin
2e Pinion wheel
2f Center axis
2g driven gear
2h Pinion gear
2i Drive handle
2j insertion hole
3 Ring-shaped hanger rail
3a Support part
3b Rail part
3c rack teeth
3d Locking hole
4 Middle stage suspension machine
4a casing
4b Wheel with flange
4d connecting pin
4e Pinion wheel
4f Center axis
4g driven gear
4h Pinion gear
4i Drive handle
4j insertion hole
5 Lower suspension machine
5a casing
5b Wheel with flange
5d connecting pin
5e Pinion wheel 5e
5j insertion hole
6 Scaffolding deck
6a Guide rail
6b Pipe material
6c truss beam
6d hook
6e scaffolding board
6f support part
6g rail part
6h rack teeth
7 Chain
7a hook
8 Suspension rod
8a Notch groove
9 Coupling
10 Lock pin 10
11 volts
12 nuts
13 Suspension rod
14 coupling
15 Rolling wheels
16 wires
18 Hanger rail for gondola
19 Gondola
20 Drive unit
22 Suspension part
24 Drive means
25 Weight suspension
26 weights

Claims (2)

A plurality of hanger rails suspended along the longitudinal direction below the structure supported by the pier and through the opening of the pier;
A plurality of upper suspension machines that are movable along the hanger rails;
A ring-shaped hanger rail having a diameter dimension equal to or smaller than the left and right width of the pier opening, and being able to pass through the pier opening by being suspended in a substantially horizontal posture by each of the upper stage suspension machines,
A plurality of middle-stage suspension machines movable along the ring-shaped hanger rail;
A plurality of lower-stage suspension machines that are suspended around the respective vertical-stage suspension machines so as to be rotatable around the vertical axis;
It has a width dimension equal to or smaller than the left and right width of the pier opening, and has a plurality of guide rails that are suspended relative to the lower suspension machines so as to be movable in the longitudinal direction. A scaffold deck that can be swung around the center and can pass through the pier opening;
A wire wound around a roller wheel arranged at the four corners of the lower part of the scaffold deck;
A gondola which is suspended and supported integrally with the wire at one of the opposed positions of the wire across the center of the ring-shaped hanger rail;
A weight having a load corresponding to the weight of the gondola, which is integrally held with the wire at the other opposite position of the wire across the center of the ring-shaped hanger rail,
A movable suspension scaffolding device, wherein the weight moves to a position relative to the gondola in conjunction with movement of the gondola and pulling of the wire. The mobile suspension scaffold device according to claim 1,
The gondola includes a drive unit including a pinion wheel that can be meshed with rack teeth disposed in parallel at a lower portion of the longitudinal surface of the scaffolding deck, and a rotation drive unit for the pinion teeth, and the rack across the drive unit. A mobile suspension scaffolding device comprising a pinion ring connected to both sides of a tooth extension direction and meshing with the rack teeth, and supported by a suspension portion having a suspension support portion of the gondola.

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