JPH0842133A - Mobile suspension type scaffold device - Google Patents

Abstract

PURPOSE:To continuously enable maintenance work by providing hanger rails running in the lengthwise direction of a structure, upper stage suspending holding machines running along these, a ring-shaped hanger rail, medium stage suspending holding machines, lower stage suspending holding machines, a scaffold deck or the like. CONSTITUTION:A scaffold deck 6 is suspended and held under a structure A through plural hanger rails 1, plural upper stage suspending holding machines 2, a ring-shaped hanger rail 3, plural medium stage suspending holding machines 4 and plural upper stage suspending holding machines 5. The scaffold deck 6 is moved in the lengthwise direction of the structure A by moving the respective upper stage suspending holding machines 2 along the respective hanger rails 1, and turns around the center by moving the respective medium stage suspending holding machines 4 along the ring-shaped hanger rail 3, and moves by relatively moving the respective guide rails 6a to the respective lower stage suspending holding machines 5. The scaffold deck 6 passes through an opening part together with the rail 3. Therefore, work can be continuously performed without dividing it with every bridge pier.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile suspension scaffolding device for performing maintenance work on a structure such as an elevated road or a railway viaduct supported by piers. The present invention relates to a mobile suspension scaffolding device capable of performing continuous work.

[0002]

2. Description of the Related Art A mobile suspension scaffolding device has been generally known as a scaffolding device for performing maintenance work for maintenance and inspection of structures such as elevated roads and viaducts for railways (see Japanese Patent Publication No. 5-54551). .

The mobile suspension scaffolding device comprises a plurality of (generally 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 along these hanger rails. A plurality of lifting machines that are movable in the front-rear direction, a plurality of second lifting machines that are suspended by each of the lifting machines, and a plurality of suspensions that are relatively movable by each of the second lifting machines. By having the guide rails, the scaffolding deck and the like are movable in the left and right directions orthogonal to the hanger rails. With this mobile suspension scaffolding device, the scaffolding deck suspended below the elevated road or railway viaduct can be moved back and forth, left and right, so that maintenance work on the elevated road and railway viaduct can be performed in the width direction and the longitudinal direction. You can do it.

[0004]

The elevated roads and railway viaducts in which the mobile suspension scaffolding device is used are supported by a plurality of bridge piers arranged at predetermined intervals along the longitudinal direction thereof. , Each pier is generally located within the width of an elevated road or railway viaduct, but each pier has a relatively large opening.

By the way, in the conventional mobile suspension scaffolding device, the scaffolding deck is installed in a direction in which the scaffolding deck is long in the width direction of an elevated road or a railway viaduct, and its length is generally left and right of the opening of the pier. Since it is larger than the width, it cannot pass through the opening of each pier. Therefore, maintenance work using the conventional mobile suspension scaffolding equipment,
There was a problem that the work efficiency was extremely poor, because it was necessary to divide the piers of the elevated roads and viaducts for railways.

Therefore, according to the present invention, maintenance work in the width direction and the longitudinal direction for a structure such as an elevated road or a railway viaduct supported by piers is divided into piers by passing through pier openings. It is an object of the present invention to provide a mobile suspension scaffolding device that can be continuously performed without using the device.

[0007]

To this end, a mobile suspension scaffolding device according to the invention is suspended longitudinally below a structure supported by a pier and through an opening in the pier. A plurality of hanger rails, a plurality of upper stage lifting machines that can move along these hanger rails, and a diameter dimension that is less than the lateral width of the pier opening. Ring-shaped hanger rails that can be suspended in different postures and pass through the pier opening, multiple middle-stage lifting machines that can move along the ring-shaped hanger rails, and these middle-level lifting machines have vertical axes. A plurality of lower stage suspension machines that are rotatably suspended around, and a plurality of lower stage suspension machines that have a width dimension that is less than or equal to the lateral width of the pier opening and that are suspended relative to each of the lower stage suspension machines. Having a guide rail allows it to move in the longitudinal direction, and And a means that is pivotally suspended in the center around the ring-shaped hanger rail and a scaffold deck can pass the abutment opening.

[0008]

In the mobile suspension scaffolding device according to the present invention which employs such means, a plurality of hanger rails, a plurality of upper stage suspension machines, a ring-shaped hanger rail, and a plurality of hanger rails are provided below the structure to be maintained. The scaffolding deck is suspended via a middle-stage lifting machine and a plurality of lower-stage lifting machines. And this scaffolding deck moves along the longitudinal direction of the structure by moving each upper-stage lifting machine along each hanger rail, and by moving each middle-stage lifting machine along the ring-shaped hanger rail, It swivels 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 lifting machine.

Here, when the scaffolding deck is turned around the center of the ring-shaped hanger rail so that its longitudinal direction is along the longitudinal direction of the building, and in this state, the scaffolding deck is moved along the longitudinal direction of the building, the scaffolding deck becomes ring-shaped. Pass through the pier opening with the hanger rail.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 shows an overall schematic structure of a mobile suspension scaffolding apparatus according to an embodiment in which a general railway viaduct is subjected to maintenance work.
Is a pair of left and right hanger rails that are hung below the viaduct for railway along the longitudinal direction thereof, and reference numeral 2 is a front and rear left and right upper four-stage lifting machine that is movable along the respective hanger rails 1 and 1. Reference numeral 3 is a ring-shaped hanger rail suspended by the upper suspensions 2 in a substantially horizontal posture, and reference numeral 4 is a front-rear, left-right, and four middle-stage suspension machines movable along the ring-shaped hanger rails 3. Reference numerals 4 and 5 denote front, rear, left and right lower four-stage hanging machines suspended by the respective middle-stage suspending machines 4, and reference numeral 6 denotes a scaffolding deck suspended by each lower-stage suspending machine 5.

The hanger rails 1, 1 have an inverted T-shaped cross-sectional shape in which the rail portions 1b, 1b respectively project in the left-right direction from the lower end of a vertically extending support portion 1a, as shown in an enlarged view in FIG. Having, the rail portion 1b, 1b
Rack teeth 1c, which are formed in a continuous waveform in a side view, are attached to the lower surface of the above along the longitudinal direction thereof. A plurality of locking holes 1d are formed in the upper part 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. The hanger rail 1 is hung in a horizontal state by a plurality of chains 7.

Further, the upper stage lifting machine 2 has a casing 2a.
Four front and rear, left and right flanged wheels 2b rotatably supported inside can move along the hanger rail 1 by rolling on the rail portions 1b, 1b of the hanger rail 1. The flange portions 2c, 2c of the wheels 2b, 2b are the rail portions 1b, 1b of the hanger rail 1.
By pinching the wheels, derailment is prevented. A connecting pin 2d is laterally installed under the casing 2a of the upper stage lifting machine 2, and the connecting pin 2d penetrates a coupling 9 which is rotatably engaged with the upper end of the hanging rod 8 about the vertical axis. Then, it is rotatably suspended around the horizontal axis.

At least one of the four upper, lower, left and right upper suspensions 2 has a pinion wheel 2e meshing with a rack tooth 1c of the hanger rail 1 having a central shaft 2f. It is rotatably supported by the casing 2a via a driven gear 2g fixed to the central shaft 2f. Corresponding to this, the drive handle 2i having the pinion gear 2h meshing with the driven gear 2g is provided with the casing 2
The drive handle 2i is rotatably supported by a.
Is manually rotated, the pinion wheels 2e are decelerated and rotated to roll on the rack teeth 1c, and thus the upper stage lifting machine 2 travels along the hanger rails 1. In addition, such an upper stage lifting machine 2 is provided with a hanger rail 1
The casing 2 should be locked in place to regulate its movement.
A through hole 2j of the lock pin 10 that engages with the rack tooth 1c of the hanger rail 1 is formed in a.

On the other hand, the ring-shaped hanger rail 3 is
The diameter is set to be larger than the distance between the pair of left and right hanger rails 1, 1 and smaller than the left and right width of the opening of the pier supporting a general railway viaduct.
As shown in FIG. 3 in an enlarged manner, the hanger rail 1 has an inverted T-shaped cross-sectional shape having a supporting portion 3a and rail portions 3b, 3b, and a continuous corrugation is formed on the lower surface of the rail portions 3b, 3b. The rack teeth 3c formed on the above are attached along the longitudinal direction thereof. Further, on the upper portion of the support portion 3a, one locking hole 3d is formed at each of four equally spaced positions in the circumferential direction. Such a ring-shaped hanger rail 3
The support portion 3a is inserted into the notch groove 8a at the lower end of each of the suspension rods 8 suspended by each of the upper stage suspension machines 2 so as to face the respective engagement holes 3d, and the respective engagement holes 3d are The penetrating bolt 11 is attached to the lower ends of the suspension rods 8 and fixed by the nuts 12, so that the suspension rods 8 are suspended on the lower ends of the suspension rods 8 in a substantially horizontal posture.

Further, each middle-stage lifting machine 4 movable along such a ring-shaped hanger rail 3 has substantially the same structure as that of the upper-stage lifting machine 2, and includes the casing 2a, the flanged wheels 2b, and Casing 4 corresponding to the connecting pin 2d
a, a wheel 4b with a flange, and a connecting pin 4d. The connecting pin 4d passes through a coupling 14 that is rotatably engaged with the upper end of the suspension rod 13 about the vertical axis and rotates about the horizontal axis. Suspended freely.

At least one middle stage lifting machine 4 among the middle stage lifting machines 4 has at least one middle stage lifting machine 4e, a center shaft 2f, a driven gear 2g, a pinion gear 2h, a drive handle 2i and an insertion hole 2j. 4 pinion wheels corresponding to
e, the central shaft 4f, the driven gear 4g, the pinion gear 4h, the drive handle 4i, and the insertion hole 4j.
Is manually driven to run along the ring-shaped hanger rail 3.

Each of the middle-stage lifting machines 4 does not have a pinion wheel 4e, and the front, rear, left and right flanged wheels 4b are simply rail portions 3b, 3b of the ring-shaped hanger rail 3.
The structure may be such that it can move freely along the ring-shaped hanger rail 3 by rolling up, and in that case, the rack teeth 3c attached to the ring-shaped hanger rail 3 can be omitted.

Each of the lower stage lifting machines 5 is also the upper stage lifting machine 2
And a casing 5a corresponding to the casing 2a, the flanged wheel 2b, and the connecting pin 2d.
A flanged wheel 5b and a connecting pin 5d are provided, and the connecting pin 5d penetrates the lower end of the hanging rod 13 and is connected thereto, so that the lower stage lifting machine 5 is vertically opposite to the upper stage lifting machine 2. It is rotatably suspended around the horizontal axis by the suspension rod 13 in the direction.

At least one of the lower suspensions 5 among the lower suspensions 5 has at least one lower suspension 5 having 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. 5 pinion wheels corresponding to
e, central shaft, driven gear, pinion gear, drive handle,
It has an insertion hole 5j (not shown).

On the other hand, as shown in FIGS. 3 to 5, the scaffolding deck 6 includes a pair of left and right truss beams 6c and 6c each having a guide rail 6a at its upper edge and a pipe member 6b at its lower edge. , The hook 6 between the pipe members 6b, 6b
Truss beams 6c, 6 by being bridged via d, 6d
A large number of scaffolding plates 6e spread along the longitudinal direction of c
The entire length corresponds to the entire width of the railway viaduct that is the target of maintenance work, and the overall width is set to be narrower than the left and right width (for example, about 4.9 m) of the opening of the pier supporting the railway viaduct. .

Here, the pair of left and right guide rails 6a, 6a forming the upper edge of the scaffolding deck 6 are the lower stage lifting machine 5 described above.
Corresponding to, the rail portions 6g, 6g have a T-shaped cross-sectional shape in which the rail portions 6g, 6g respectively project in the left-right direction from the upper end of the support portion 6f extending in the vertical direction, and the rail portions 6g, 6g are continuous with the upper surfaces in a side view. Rack teeth 6h, 6 formed in a wave shape
h is attached 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 stage lifting machine 5 and the rack teeth 6 are provided on the pinion wheels 5e.
Lower hanger 5 for each of the two front and rear while h is engaged
The guide rails 6a and 6a are moved together with the scaffolding deck 6 by manually rotating a drive handle (not shown) of the lower stage lifting machine 5 and deceleratingly rotating the pinion wheel 5e to feed the rack teeth 6h. It is configured to move relative to each lower stage lifting machine 5 in the longitudinal direction.

Next, the operation of the mobile suspension scaffolding device of this embodiment constructed as described above will be described with reference to FIGS. 5 to 7. As shown in FIG. 5, the mobile suspension scaffolding apparatus of this 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 construction object for maintenance work, with anchor bolts. Rails 1 and 1 are suspended below the railroad viaduct A. That is, the pair of left and right hanger rails 1, 1 also penetrates through the openings C of each pier B that supports the railway viaduct A and is suspended along the longitudinal direction of the railway viaduct A.

In this way, below the railway viaduct A, a pair of left and right hanger rails 1, 1, front and rear left and right upper stage suspension machines 2, ring-shaped hanger rails 3, front and rear left and right middle stage suspension machines 4, front and rear left and right lower stages. The scaffolding deck 6 is suspended via the suspending machine 5, and the scaffolding deck 6 is constructed such that each upper-stage suspending machine 2 moves along the pair of left and right hanger rails 1 and 1 for the railway viaduct A. It moves along the longitudinal direction, and each middle-stage lifting machine 2 moves along the ring-shaped hanger rail 3 to thereby turn around the center of the ring-shaped hanger rail 3,
The pair of left and right guide rails 6a, 6a move in the longitudinal direction by relatively moving with respect to each lower stage lifting machine 5.

Therefore, when performing maintenance work on the railway viaduct A, between the piers B and B, as shown in FIG. 6, the scaffolding deck 6 is swiveled around the center of the ring-shaped hanger rail 3 and its longitudinal direction is changed. The scaffolding deck 6 is moved along the pair of left and right hanger rails 1 and 1 in a state of being orthogonal to the pair of left and right hanger rails 1 and 1. By doing so, the scaffolding deck 6 moves in the longitudinal direction of the railway viaduct A with the longitudinal direction being along the width direction of the railway viaduct A, and between the piers B and B, from the top of the scaffolding deck 6 The maintenance work on the lower surface of the railway viaduct A can be sequentially performed along the longitudinal direction over the entire width.

Further, in this state, if the guide rails 6a are moved relative to the lower-stage lifting machines 5 to move the scaffolding deck 6 in the longitudinal direction, the scaffolding deck 6 becomes larger than the lateral width of the railway viaduct A. Overhanging is possible and maintenance work on both sides of the railway viaduct A can be easily performed.

Further, between the piers B and B, the scaffolding deck 6 can be turned around the center of the ring-shaped hanger rail 3 by an arbitrary angle. For example, if the scaffolding deck 6 is half-turned at a predetermined position, the scaffolding deck 6 can be rotated. It is possible to perform maintenance work on the lower surface of the railway viaduct A for an area corresponding to a large circle drawn by the turning trajectory.

When the maintenance work for the railway viaduct A between the bridge piers B and B is completed, the scaffolding deck 6 is swiveled around the center of the ring-shaped hanger rail 3 and its longitudinal direction is moved to the left and right as shown in FIG. The scaffolding deck 6 is moved along the pair of left and right hanger rails 1, 1 in parallel with the pair of hanger rails 1, 1. By doing so, the scaffolding deck 6 moves in the longitudinal direction of the railway viaduct A together with the ring-shaped hanger rails 3, and eventually passes through the opening C of the pier B as shown in FIG.
Move in between.

When the scaffolding deck 6 passes through the opening C of the bridge pier B together with the ring-shaped hanger rail 3 in this way, the maintenance work for the railway viaduct A is performed between the new bridge piers B and B. The maintenance work for the railway viaduct A can be performed continuously without being divided between the piers B, B, and extremely high work efficiency can be obtained.

The pair of left and right hanger rails 1 and 1 in this embodiment can be appropriately increased by three or four when the width C of the opening C of the pier B is wide. Here, when the number of hanger rails is three, the upper stage lifting machine 2 movable along these is two for each hanger rail, which is six in total. Similarly, when the number of hanger rails is three. In total, there are a total of eight upper stage lifting machines 2.

On the other hand, the lateral width of the opening C of the pier B is wide,
Correspondingly, when the width dimension of the scaffolding deck 6 is increased, the number of the pair of left and right guide rails 6a can be increased to three or four. In that case, the lower stage lifting machine 5 and the middle stage lifting machine The number of machines 4 also changes to 6 and 8 in total.

[0031]

As described above, according to the present invention, the scaffolding deck suspended below the structure to be subjected to the maintenance work is constructed by moving each upper-stage lifting machine along each hanger rail. Can be moved along the longitudinal direction of
By moving each middle-stage suspension machine along the ring-shaped hanger rail, it can be swiveled around the center of the ring-shaped hanger rail, and by moving each guide rail relative to each lower-stage suspension machine, its longitudinal direction is increased. Since it can be moved, maintenance work can be performed across the width and length of the structure.

In particular, the scaffolding deck can pass through the pier opening together with the ring-shaped hanger rails by setting the longitudinal direction of the scaffolding deck to be along the longitudinal direction of the structure, so that the maintenance work for the structure is divided between the piers. It can be performed continuously without the need for extremely high work efficiency.

[Brief description of drawings]

FIG. 1 is a skeleton perspective view showing the overall schematic structure of an embodiment of a mobile suspension scaffolding device according to the present invention.

FIG. 2 is a front cross-sectional view showing a structure of an upper stage lifting machine and a ring-shaped hanger rail and a connecting structure of the two in one embodiment.

FIG. 3 is a side view with a partial cross-section showing the structure of the middle-stage lifting machine, the lower-stage lifting machine, and the scaffolding deck as well as the connection structure thereof in one embodiment.

FIG. 4 is a partial perspective view of a scaffolding deck in one embodiment.

FIG. 5 is a side view showing the operation of the embodiment, and is a side view of the scaffolding deck 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 of the scaffolding deck 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 of the scaffolding deck along the longitudinal direction of the railway viaduct.

[Explanation of symbols]

 1 Hanger rail 1a Support part 1b Rail part 1c Rack tooth 1d Locking hole 2 Upper stage lifting machine 2a Casing 2b Wheel with flange 2c Flange part 2d Connecting 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 part 3b Rail part 3c Rack tooth 3d Locking hole 4 Middle-stage lifting machine 4a Casing 4b Flange wheel 4d Connecting pin 4e Pinion wheel 4f Center shaft 4g Driven gear 4h Pinion gear 4i Drive handle 4j insertion hole 5j Lower stage lifting machine 5a Casing 5b Flanged wheel 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 tooth 7ch Over emissions 7a hooks 8 the lifting rod 8a notched groove 9 coupling 10 lock pin 10 11 bolt 12 nut 13 suspending rod 14 coupling

Claims (1)

[Claims] 1. A plurality of hanger rails suspended along a longitudinal direction below a structure supported by a pier and penetrating an opening of the pier, and a plurality of hanger rails movable along the respective hanger rails. A ring-shaped hanger rail that has a plurality of upper-stage lifting machines and a diameter dimension that is less than or equal to the width of the opening of the pier, and that is suspended by the upper-stage lifting machines in a substantially horizontal posture and can pass through the opening of the pier. And a plurality of middle-stage lifting machines movable along the ring-shaped hanger rails, and a plurality of lower-stage lifting machines each of which is rotatably suspended around the vertical axis in each of the middle-level lifting machines, The width of the pier opening is less than the left-right width, and it has a plurality of guide rails that are movably suspended relative to each of the lower-stage lifting machines. Suspended around the center so that it can swing freely Mobile suspension scaffold device, comprising a passable scaffold deck.