JP3606528B2 - Mobile suspension scaffold device - Google Patents

Description

[0001]
[Industrial application fields]
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]
[Problems to be solved by the invention]
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 invention provides continuous 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 without being divided between each pier. It is an object of the present invention to provide a mobile suspension scaffolding device that can be used in a simple manner.
[0007]
[Means for Solving the Problems]
For this purpose, the mobile suspension scaffold device according to the present invention comprises a plurality of hanger rails suspended along the longitudinal direction below the structure supported by the pier and through the opening of the pier, and A plurality of upper suspension machines that can move along the hanger rail, and have a diameter dimension that is less than the width of the left and right widths of the pier opening, and are suspended in a substantially horizontal posture by each of the upper suspension machines. Ring-shaped hanger rail that can pass through the section, a plurality of middle-stage suspension machines that can move along the ring-shaped hanger rail, and these middle-stage suspension machines are respectively suspended about the vertical axis so as to be rotatable. Having 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 width of the pier opening and being relatively movable on each of the lower suspension machines in the longitudinal direction. Center of ring-shaped hanger rail Pivotally been suspended is a means that comprises a scaffolding deck can pass the abutment opening in Ri.
[0008]
[Action]
In the mobile suspension scaffolding apparatus according to the present invention adopting such means, a plurality of hanger rails, a plurality of upper suspension machines, a ring-shaped hanger rail, a plurality of middle stages are provided below the structure to be maintained. The scaffold deck is suspended through a suspension machine and 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. It turns around the center of the ring-shaped hanger rail, and each guide rail moves in the longitudinal direction by moving relative to each lower stage suspension machine.
[0009]
Here, if the scaffold deck is turned around the center of the ring-shaped hanger rail and the longitudinal direction thereof is moved along the longitudinal direction of the structure, and the moving along the longitudinal direction of the structure in this state, the scaffold deck is moved together with the ring-shaped hanger rail. Pass through the pier opening.
[0010]
【Example】
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
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, right and left, 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.
[0011]
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.
[0012]
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.
[0013]
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.
[0014]
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. .
[0015]
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.
[0016]
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.
[0017]
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.
[0018]
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.
[0019]
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).
[0020]
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.
[0021]
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.
[0022]
Next, the operation of the mobile suspension scaffold device of the present embodiment configured as described above will be described with reference to FIGS.
As shown in FIG. 5, the mobile suspension scaffold device of the present embodiment has a pair of left and right hangers by fixing the upper ends of the chains 7 to the railway viaduct A, which is a target structure for maintenance work, via anchor bolts. Rails 1 and 1 are suspended along the railway viaduct A. That is, the pair of left and right hanger rails 1, 1 are suspended along the longitudinal direction of the railway viaduct A through the opening C of each bridge pier B that supports the railway viaduct A.
[0023]
Thus, below the railroad viaduct A, there are 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. The scaffolding deck 6 is suspended in the longitudinal direction of the railway viaduct A by moving the upper suspension machines 2 along the pair of left and right hanger rails 1, 1. The middle-stage suspension machine 2 moves along the ring-shaped hanger rail 3 so as to turn around the center of the ring-shaped hanger rail 3, and the pair of left and right guide rails 6a and 6a are suspended on the lower stage. By moving relative to the machine 5, it moves in the longitudinal direction.
[0024]
Therefore, in the maintenance work of the railway viaduct A, between the piers B and B, as shown in FIG. 6, the scaffold deck 6 is turned around the center of the ring-shaped hanger rail 3 and the longitudinal direction thereof is a pair of left and right. The scaffold deck 6 is moved along the pair of left and right hanger rails 1 and 1 in a state orthogonal to the hanger rails 1 and 1. By doing so, the scaffold deck 6 moves in the longitudinal direction of the railway viaduct A in a state where the longitudinal direction is along the width direction of the railway viaduct A, and between the piers B and B, from above the scaffold deck 6 Maintenance work on the lower surface of the railway viaduct A can be sequentially performed along the longitudinal direction over the entire width.
[0025]
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 overhang greatly beyond the lateral width of the railway viaduct A, Maintenance work on both sides of the railway viaduct A can be easily performed.
[0026]
Further, between the bridge piers B and B, the scaffold deck 6 can be swung around the center of the ring-shaped hanger rail 3 by an arbitrary angle. Maintenance work can be performed on the lower surface of the viaduct A for railways in an area corresponding to a large circle to be drawn.
[0027]
When the maintenance work for the railway viaduct A between the bridge piers B and B is completed, the scaffold deck 6 is turned around the center of the ring-shaped hanger rail 3 as shown in FIG. The scaffold deck 6 is moved along the pair of left and right hanger rails 1 and 1 in parallel with the rails 1 and 1. By doing so, the scaffold deck 6 moves in the longitudinal direction of the railway viaduct A together with the ring-shaped hanger rail 3, and eventually passes through the opening C of the bridge pier B as shown in FIG. Move to.
[0028]
When the scaffold deck 6 passes through the opening C of the pier B together with the ring-shaped hanger rail 3, the maintenance work for the railway viaduct A described above is performed between the new piers B and B. Maintenance work for the viaduct A can be performed continuously without being divided between the piers B and B, and extremely high work efficiency can be obtained.
[0029]
Note that the pair of left and right hanger rails 1, 1 in this embodiment can be appropriately increased to three or four correspondingly when the width of the opening C of the pier B is wide. Here, when there are three hanger rails, there are six upper suspension machines 2 that can be moved along these rails, two for each hanger rail, and similarly three hanger rails. The total number of upper stage suspension machines 2 is eight.
[0030]
On the other hand, when the width C of the opening C of the bridge pier B is wide and the width of the scaffold deck 6 is increased correspondingly, the number of the pair of left and right guide rails 6a can be increased to three and four, In that case, the total number of lower stage suspension machines 5 and middle stage suspension machines 4 also changes to 6 and 8.
[0031]
【The invention's effect】
As described above, according to the present invention, the scaffold deck suspended below the construction subject to maintenance work is moved along the longitudinal direction of the construction as each upper stage suspension machine moves along each hanger rail. Each middle stage suspension machine can move around the center of the ring-shaped hanger rail by moving along the ring-shaped hanger rail, and each guide rail can move relative to each lower stage suspension machine. It can move in the longitudinal direction, and maintenance work can be performed in the width direction and the longitudinal direction for the structure.
[0032]
In particular, since the scaffold deck can pass through the pier opening together with the ring-shaped hanger rail by setting the longitudinal direction of the scaffold deck along the longitudinal direction of the structure, the maintenance work on the structure can be continued without being divided between each pier. Can be performed automatically, and extremely high working efficiency can be obtained.
[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 structure of the upper suspension machine and the ring-shaped hanger rail in one embodiment together with the connection structure between them.
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 scaffolding deck, and a connection structure thereof in one embodiment.
FIG. 4 is a partial perspective view of a scaffold deck according to an embodiment.
FIG. 5 is a side view showing the operation of the embodiment, and is a side view showing a state in which the scaffold deck is along the longitudinal direction of the railway viaduct.
FIG. 6 is a front view showing the operation of the embodiment, and is a front view showing a state in which the scaffold deck is along the width direction of the railway viaduct.
FIG. 7 is a front view showing the operation of the embodiment, and is a front view showing a state in which the scaffold deck is along the longitudinal direction of the railway viaduct.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hanger rail 1a Support part 1b Rail part 1c Rack tooth 1d Locking hole 2 Upper stage suspension machine 2a Casing 2b Wheel 2c with flange Flange part 2d Connection pin 2e Pinion wheel 2f Center shaft 2g Driven gear 2h Pinion gear 2i Drive handle 2j Insertion hole 3 ring-shaped hanger rail 3a support portion 3b rail portion 3c rack tooth 3d locking hole 4 middle stage suspension machine 4a casing 4b flanged wheel 4d connecting pin 4e pinion wheel 4f central shaft 4g driven gear 4h pinion gear 4i drive handle 4j insertion hole 5 Lower stage lifting machine 5a Casing 5b Flange wheel 5d Connecting pin 5e Pinion wheel 5e
5j Insertion hole 6 Scaffold deck 6a Guide rail 6b Pipe material 6c Truss beam 6d Hook 6e Scaffold plate 6f Supporting part 6g Rail part 6h Rack tooth 7 Chain 7a Hook 8 Suspension rod 8a Notch groove 9 Coupling 10 Lock pin 10
11 Bolt 12 Nut 13 Suspension rod 14 Coupling

Claims (1)

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 mobile suspension scaffold device comprising: a scaffold deck suspended pivotably around a center and capable of passing through a pier opening.

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