JP2020169084A - Slide type turning device - Google Patents

Abstract

To provide a slide type turning device capable of performing the turning operation smoothly without performing fine adjustment in lifting such as the adjustment of gravity center that is required for the one-point lifting since the turning operation is performed under a state where lifting and supporting are performed at a plurality of points, which forms a ring shape, with an interval rather than performing the turning operation by lifting and supporting at one point.SOLUTION: A slide type turning device includes a traveling member, which is suspended from a support member extending linearly and formed to be movable in a longitudinal direction of the support member, a second support member, which is suspended from and connected to the traveling member whose longitudinal direction is provided to be orthogonal to a longitudinal direction of the support member, a second traveling member, which is suspended from the second support member and formed to be movable in the longitudinal direction of the second support member, a ring-shaped third support member suspended from the second traveling member, and a third traveling member, which is suspended from and attached to the third support member and formed to be movable along a ring-shaped guide rail provided on an outer peripheral surface of the third support member.SELECTED DRAWING: Figure 1

Description

The present invention is also used, for example, when a precast floor slab is lifted and moved and laid on a main girder erected on a pier or a bridge stand, or when the existing precast floor slab is peeled off and then lifted and transported. It relates to a slide type swivel device used for a precast floor slab laying device or the like used.

The sliding swivel device of the present invention is by no means limited to the case where it is used in a precast floor slab laying device. Rather than turning the lifted member by lifting and supporting it by hanging it at one point, it is possible to lift and support it at multiple points in a ring shape at intervals and turn it in that state, so it is always required when hanging at one point. The lifted member can be smoothly swiveled in a stable horizontal state without adjusting the position of the center of gravity of the lifting member at the time of lifting. Therefore, if such a turning operation is required, it can be used in any working device.

Conventionally, a precast floor slab laying device has, for example, a vertically erected support leg and a support beam extending horizontally from the upper portion thereof to form a main body of the laying device, and the precast floor slab laying device is projected horizontally. A mobile lifting device is attached to the support beam, the precast slab to be newly installed is lifted by this mobile lifting device, the lifted precast slab is transported in the longitudinal direction of the bridge, and is rotated at a predetermined position, for example, 90 degrees. The precast floor slab was to be laid on the main girder of the bridge.

"PC Road Bridge Planning Manual" by Prestressed Concrete Construction Industry Association November 1989

By the way, conventionally, for example, in the construction of a new precast floor slab, since vehicles do not pass through, the work space at both ends in the width direction could be relatively wide in the new bridge, but the precast floor slab can be replaced. In the case of construction, there was a situation where the opposite lane through which the vehicle was passing was approaching, and there was a situation in which the replacement work of the precast floor slab could affect the passage of the oncoming lane.

Further, after the supply of the precast floor slab is carried on a transport vehicle, it is lifted by the mobile lifting device, the mobile lifting device is swiveled at a predetermined position by about 90 °, and further, at right angles to the longitudinal direction of the bridge. The work of moving the precast floor slab, which was also lifted in the direction, for fine adjustment was smoothly performed, and a slide-type swivel device with a compact structure had not been devised.

Thus, the present invention was devised in view of the above circumstances, and is used for a simple, safe, easy-to-work, and economical precast floor slab laying device in bridge formation work, etc., and can be lifted and supported by one-point suspension. Rather than turning, it is lifted and supported at multiple points in a ring shape at intervals, and turning is performed in that state, so fine adjustments such as the center of gravity adjustment required for lifting at one point are made. An object of the present invention is to provide a slide-type swivel device that can be swiveled smoothly without any need and can be manufactured at low cost.

In other words, instead of catching the center of gravity of a relatively long lifting member and turning it, for example, it can be lifted at multiple points provided in a ring shape, and the center of gravity can be predicted at about to facilitate lifting and turning. It is the one that was made. In the actual work at the site, in the case of one-point suspension, it took a considerable amount of time to align the center of gravity of the lifting member.

The sliding swivel device used in the precast floor slab laying device according to the present invention
A traveling member suspended from a support member extending in a straight line and configured to be movable in the longitudinal direction of the support member.
A second support member suspended and connected to the traveling member and provided so that the longitudinal direction is orthogonal to the longitudinal direction of the support member.
A second traveling member suspended from the second support member and configured to be movable in the longitudinal direction of the second support member.
A ring-shaped third support member suspended from the second traveling member,
A third traveling member that is suspended from the third support member and is configured to be movable along a ring-shaped guide rail provided on the outer peripheral surface of the third support member.
The member suspended from the third traveling member is movable in the longitudinal direction of the traveling member and the second traveling member, and is movable 360 ° along the ring-shaped outer peripheral surface of the third traveling member. ,
Characterized by that
Or
At least two or more of the traveling members are provided, and the traveling members are provided in parallel at intervals.
It is characterized by that.

With the slide-type swivel device according to the present invention, a long precast floor slab can be moved easily, safely, and easily, and the swivel operation is not performed by lifting support by one-point suspension, but is formed into a ring shape at intervals. Since it is lifted and supported at multiple points and swiveled in that state, it can be swiveled smoothly, for example, 90 °, without making fine adjustments such as adjusting the center of gravity when hoisting, which is required when hoisting at one point. Moreover, it is possible to provide a sliding swivel device such as a precast floor slab in bridge forming work that can be manufactured at low cost.

Furthermore, in the case of removing the precast floor slab on the old bridge, in order to divide and remove the precast floor slab, the slide type swivel device is configured so that it can be moved to the front of the laying device, and the precast floor slab is removed. The sliding swivel device is configured to be movable in the width direction of the laying device, and the existing precast slab that has been divided into small pieces can be lifted without troublesome centering positioning, and then the swivel position. For example, the direction of the precast floor slab that has been lifted by turning 90 ° can be changed, and the precast floor slab can be moved to the rear of the laying device to enable the removal work of the removal girder.

First, the configuration of the laying device 1 used in the present invention will be described based on the examples shown in the figure.
As shown in FIG. 1, the laying device 1 has a pair of vertical frames 2 and a pair of horizontal frames 3 arranged in the horizontal direction, and has an upper frame 4 framed in a substantially rectangular shape.

Then, at the intermediate position in the width direction of the upper frame 4, for example, a support member 5 for the sliding swivel device 6 which is extended in the longitudinal direction of the upper frame 4 and is paired with two is provided. ing.

A counterweight 15 is attached to one end side, that is, the rear side of the support member 5 for the sliding swivel device 6. By attaching the counterweight 15, the load of the laying device 1 is not biased to the front side, and the laying device 1 is devised so as not to fall forward during the laying work.

The support member 5 for the slide-type swivel device 6 is configured such that the slide-type swivel device 6 (see FIGS. 2, 3, and 4) of the present invention is movable in the longitudinal direction of the support member 5. It is attached.

The sliding swivel device 6 can and moves a lifting member, for example, a newly installed precast floor slab 16 in the longitudinal direction of the upper frame 4, that is, in the front side where the new precast floor slab 16 is laid. After that, the precast floor slab 16 that has been lifted in the horizontal direction at a predetermined turning position 17 is configured to smoothly perform a turning operation, that is, for example, a work of rotating 90 °.

Here, the precast floor slab 16 is lifted in a state in which the longitudinal direction of the precast floor slab 16 faces in a direction parallel to the longitudinal direction of the support member 5, and the front direction, that is, the laying position of the precast floor slab 16, that is, Moved forward. Then, at the turning position 17, the direction of the precast floor slab 16 is rotated by 90 °. The precast deck 16 swiveled by 90 ° is erected in the width direction of the bridge surface of the bridge, and is laid sequentially.

Here, the configuration of the sliding swivel device 6 will be described.
As described above, the sliding swivel device 6 is mounted by being locked and suspended from two support members 5 extending in parallel as described above. The sliding swivel device 6 has a traveling member 7 configured to be movable in the longitudinal direction of the support member 5. The traveling member 7 is configured as a component such as a wheel that is suspended and attached to the support member 5 and can move in the longitudinal direction of the support member 5.

As shown in the figure, for example, two traveling members 7 are attached at intervals in the longitudinal direction of one support member 5, and therefore, for example, two traveling members 7 are attached to both side surfaces of the support member 5. Four traveling members 7 are attached. However, the number is not limited to this, and four or more may be attached.

Reference numeral 8 indicates a second traveling member. As can be understood from the figure, the second traveling member 8 is locked and suspended by the second supporting member 9 connected to the lower side of the traveling member 7 described above, and is suspended in the longitudinal direction of the second supporting member 9. It is configured to be able to move to.

Here, the second support member 9 is provided so as to be suspended from the traveling member 7 so as to be orthogonal to the support member 5, and is thus locked and suspended from the second support member 9. The second traveling member 8 is attached and configured so as to be movable in a direction orthogonal to the moving direction of the traveling member 7. The configuration of the second traveling member 8 may be substantially the same as the configuration of the traveling member 7.

Further, as shown in FIG. 4, two second traveling members 8 are attached to one second supporting member 9 at intervals in the longitudinal direction, and the two second traveling members 8 are slide jacks 10. Are connected by. The lower end surface of the second support member 8 is fixed to the upper end surface of the third support member 11, which will be described later, in the slide jack 10, so that the slide jack 10 is left and right in the longitudinal direction of the second support member 8 from the fixed position. For example, when the slide jack 10 is operated by about 200 mm, the two second traveling members 8 are configured to be able to move about 200 mm to the left and right in the longitudinal direction of the second support member 8.

Further, as can be understood from FIGS. 3 and 4, the above-mentioned third support member 11 having a ring shape is suspended and attached to the second traveling member 8 so as to spread in the horizontal direction. A third traveling member 12 is suspended and attached to the third supporting member 11, and the third traveling member 12 moves along the outer peripheral surface of the ring of the ring-shaped third supporting member 11. It is configured so that it can be done. The configuration of the third traveling member 12 is substantially the same as the configuration of the traveling member 7 and the second traveling member 8.

Here, a plurality of third traveling members 12 suspended and attached to the third support member 11 are attached at predetermined intervals. In this embodiment, four third traveling members 12 are suspended and attached, and the four third traveling members 12 are connected by an interval holding member 13 so as to keep a predetermined interval constant. The number of the third traveling member 12 is not limited to four.

Further, a lifting holder 14 is attached to each of the four third traveling members 12, and the precast floor slab 16 or the like is fixed to the lifting holder 14 so that the precast floor slab 16 or the like can be lifted and moved or swiveled. There is.

Therefore, unlike the conventional method of lifting and supporting by lifting at one point, it is possible to lift and support at multiple points in a ring shape at intervals, and the turning operation can be performed in that state, so it is necessary for single-point suspension. No fine adjustment such as adjustment of the center of gravity of the lifted member is required when lifting.

Next, the usage state of the sliding swivel device 6 of the present invention will be described.
In FIG. 1, the sliding swivel device 6 is moved to the rear side to which the counterweight 15 is attached, and the precast floor slab 16 is lifted from there.

Here, the newly installed precast floor slab 16 to be laid is placed on a transport vehicle or the like and transported, and is transported to the rear side of the laying device 1 to which the counterweight 15 is attached.
The carried precast floor slab 16 is connected to the lifting holder 14 and lifted by the sliding swivel device 6.

The lifted precast floor slab 16 is moved to the turning position 17 shown in FIG. 1, that is, to the front side by the traveling member 7 of the sliding swivel device 6. At the turning position 17, the precast floor slab 16 is turned 90 °. This turning operation is performed by rotating the third traveling member 12 which is suspended and attached to the ring-shaped third support member 11 in a ring shape.

Here, the features of the present invention are exhibited. The present invention does not perform a swivel operation by lifting support by one-point suspension, but can lift and support at a plurality of points in a ring shape at intervals, and can perform a swivel operation in that state. Therefore, the lifting operation required for one-point suspension is required. No fine adjustment such as adjustment of the center of gravity of the lifted member is required.

Then, the precast floor slab 16 swiveled by 90 ° is erected and laid so as to face the width direction on the bridge surface and the longitudinal direction of the precast floor slab 16.

At that time, it may be necessary to move the precast floor slab 16 in the left-right direction and make fine adjustments so that the precast floor slab 16 can be laid accurately at a predetermined laying location.
Therefore, the slide jack 10 is operated so that the suspended precast deck 16 can be moved in the width direction of the bridge surface and finely adjusted.

Then, after fine-tuning the movement, the precast floor slab 16 is lowered and laid on the floor surface of the bridge. After that, the sliding swivel device 6 is returned to the initial position, that is, the position where the precast floor slab 16 is lifted.

For the subsequent work, the precast floor slab 16 to be laid next is lifted and the same operation as the previous operation is performed to sequentially lay the precast floor slab 16.

By the way, the slide-type swivel device 6 according to the present invention can also be used when the existing precast floor slab 16 laid on the bridge is peeled off, lifted, and removed.

The work of removing the existing precast floor slab 16 by the sliding swivel device 6 of the present invention will be described.
As shown in FIG. 1, the sliding swivel device 6 of the present invention can be moved to the frontmost side of the upper frame 4 of the laying device 1.

The sliding swivel device 6 can swivel up to 360 °. Therefore, for example, in order to lift the existing precast floor slab 16 that has been cut into small pieces in advance, the precast floor slab 16 that has been cut into small pieces is slidably swiveled toward the center position in the longitudinal direction of the horizontal frame 3. Move the device 6. This movement can be performed by operating the slide jack 10 as described above.

After that, the precast floor slab 16 divided into small pieces is lifted, and the slide-type swivel device 6 moves to the swivel position 17 in the lifted state. At this turning position 17, for example, it is turned 90 ° in the direction opposite to the clockwise direction.

After that, the lifted precast floor slab 16 is moved while being lifted at a position parallel to the longitudinal direction of the laying device 1, and the precast floor slab 16 for removal is loaded on the removal transport vehicle.

Next, the same removal work is performed to remove the existing precast floor slab 16. That is, for example, the existing precast floor slab 16 that has been cut and divided into small pieces is moved to the center position in the longitudinal direction of the small pieces of the precast floor slab 16 so as to be lifted by the sliding swivel device 6 of the present invention. .. After that, the precast floor slab 16 divided into small pieces is lifted and moved to the turning position 17. At this turning position 17, for example, it is turned 90 ° in the direction opposite to the clockwise direction.

After that, the lifted precast floor slab 16 is lifted and moved at a position parallel to the longitudinal direction of the laying device 1.
This lifting movement is performed up to a position where the counterweight 15 is provided, and at that position, for example, the vehicle is transshipped to a transport vehicle or the like.
This removal work is repeated in sequence, and the removal work of the existing precast floor slab 16 is completed.

As described above, in the case of the slide type swivel device 6 of the present invention, not only the laying work of the newly installed precast floor slab 16 but also the existing precast floor slab 16 to be replaced is peeled off from the bridge surface and lifted. It can also be used for removal work.
Moreover, the slidable swivel device 6 according to the present invention can significantly improve the workability and stability of the laying device 1.

It is a block diagram which explains the structure of the laying apparatus. It is a block diagram (the 1) explaining the structure of the slide type swivel device by this invention. It is a block diagram (the 2) explaining the structure of the slide type swivel device by this invention. FIG. 3 is a configuration explanatory view (No. 3) for explaining the configuration of the slide type swivel device according to the present invention.

1 Laying device 2 Vertical frame 3 Horizontal frame 4 Upper frame 5 Support member 6 Sliding swivel device 7 Traveling member 8 Second traveling member 9 Second supporting member 10 Slide jack 11 Third supporting member 12 Third traveling member 13 Spacing member 14 Lifting holder 15 Counterweight 16 Precast floor slab 17 Swing position

Claims (2)

A traveling member suspended from a support member extending in a straight line and configured to be movable in the longitudinal direction of the support member.
A second support member suspended and connected to the traveling member and provided so that the longitudinal direction is orthogonal to the longitudinal direction of the support member.
A second traveling member suspended from the second support member and configured to be movable in the longitudinal direction of the second support member.
A ring-shaped third support member suspended from the second traveling member,
A third traveling member, which is suspended from the third support member and is configured to be movable along a ring-shaped rail provided on the outer peripheral surface of the third support member, is provided.
The member suspended from the third traveling member is movable in the longitudinal direction of the traveling member and the second traveling member, and is movable 360 ° along the ring-shaped outer peripheral surface of the third traveling member. ,
A sliding swivel device characterized by this.
At least two or more of the traveling members are provided, and the traveling members are provided in parallel at intervals.
The slide-type swivel device according to claim 1.

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