JP7388643B1 - Jack movable floor slab erection device - Google Patents

Abstract

An object of the present invention is to provide a jack movable floor slab erection device that can smoothly and quickly move the floor slab erection device without moving wheels and can perform floor slab replacement work reliably and safely. SOLUTION: A floor slab erection device 1 having a pair of moving rails 9 and support legs placed on the pair of moving rails 9, and moving the floor slab erection device 1 in the longitudinal direction of the moving rails 9. The hollow jack device 21 includes a jack main body 22 connected to both side surfaces of the floor slab erection device 1, and a jack main body 22 that penetrates the jack main body 22 and protrudes from both end sides of the jack main body 22. A cylinder portion 25 configured to be able to move, a rod-shaped operating member 23 that penetrates the inside of the cylinder portion 25 and whose both ends are locked to the moving rail 9, and a cylinder portion that is attached to the rod-shaped operating member 23 and projects. It is characterized in that it has a locking member 27 that is pushed, and moves the floor slab erection device 1 in the longitudinal direction of the moving rail 9 by the length that the locking member 27 is pushed by the cylinder portion. [Selection diagram] Figure 1

Description

The present invention relates to a floor slab installation device used for peeling off a floor slab laid on a road surface such as an expressway and replacing it with a new floor slab. This invention relates to a jack-moving precast floor slab erection device invented for re-laying floor slabs.

Conventionally, various types of devices for replacing floor slabs that constitute road surfaces such as expressways have been proposed.For example, the applicant of the present invention also proposed a floor slab replacement device described in Japanese Patent Application Laid-open No. 2018-155017. An application was filed and a patent was obtained.

Here, not all road surfaces such as highways on which floor slab replacement work is performed are nearly horizontal. For example, on expressways built in mountainous areas, existing bridges have large running gradients, and there are many existing bridges whose road surfaces have so-called steep uphill or downhill slopes.

In such a case, it is extremely difficult to move the floor slab erection device by wheel running on a road surface with a steep slope to perform work such as replacing the floor slab, and this is not preferable from a safety standpoint.

JP 2018-155017 Publication

The present invention was devised in order to address the above-mentioned conventional problems. For example, when the road surface of a bridge or expressway is formed with a steep slope, a floor slab erection device that runs on wheels is used to replace the floor slab. Even if the work cannot be carried out smoothly and reliably, the floor slab erection device can be moved smoothly and quickly without the above-mentioned wheel running movement, and the floor slab replacement work can be reliably and safely carried out using jacks for movable floor slab erection. The purpose is to provide a device.

The present invention
A floor slab erection device having a pair of moving rails installed on a road surface, support legs placed on the pair of moving rails, and a hollow jack for moving the floor slab erection device in the longitudinal direction of the moving rails. comprising a device;
The hollow jack device includes a jack main body connected to both side surfaces of the floor slab erection device, a cylinder portion configured to penetrate through the jack main body and protrude from both end sides of the jack main body, and a cylinder portion that extends inside the cylinder portion. It has a rod-shaped operating member that is inserted through the rod-shaped operating member and whose both ends are locked to the moving rail, and a locking member that is attached to a predetermined position in the longitudinal direction of the rod-shaped operating member and is pushed by the protruding cylinder part,
moving the floor slab erection device in the longitudinal direction of the moving rail by the length by which the locking member is pushed by the cylinder part;
It is characterized by
or
A plurality of the hollow jack devices are attached to one side of the floor slab erection device,
It is characterized by
or
A sliding plate for reducing frictional resistance is interposed between the moving rail and the support leg placed on the moving rail.
It is characterized by
or
Of the hollow jack devices attached to both sides of the floor slab erection device, the operation of only one hollow jack device on one side is alternately repeated to move the floor slab erection device in the longitudinal direction of the moving rail;
It is characterized by
or
The moving rail is configured to bend in the left-right direction from a substantially intermediate position in the longitudinal direction, and is configured to be a moving rail that can be installed on a road surface that bends in the left-right direction.
It is characterized by this.

According to the present invention, for example, when the road surface of a bridge or expressway is formed with a steep upward slope, and work such as replacing the floor slab cannot be performed smoothly and reliably with a floor slab erection device that moves on wheels. However, it has the excellent effect of providing a jack-moving floor slab erection device that can smoothly and quickly move the floor slab erecting device without the above-mentioned wheel running movement, and can perform the floor slab replacement work reliably and safely.

FIG. 1 is an explanatory diagram (1) illustrating the installation state of the jack movable floor slab erection device according to the present invention. It is an explanatory view explaining an installation state of a support leg placed on a moving rail. It is an explanatory view explaining the composition of the bar-like operation member of the hollow jack device connected to the side of the floor slab erection device. It is an explanatory view of the composition of the outrigger jack attached to the side of the floor slab erection device. It is an explanatory view explaining the composition of a pair of support legs attached to both sides of a floor slab erection device. It is a perspective view explaining the composition of the hollow jack device attached to the side of the floor slab erection device. It is an explanatory view explaining operation of a hollow jack device attached to both sides of a floor slab erection device. FIG. 2 is an explanatory diagram (2) illustrating the installed state of the jack movable floor slab erection device according to the present invention.

Embodiments of the present invention will be described below based on the drawings.
FIG. 1 shows the installation state of the floor slab erection device 1 according to the present invention when performing road surface construction such as a steeply sloped expressway.

First, the schematic configuration of the floor slab erection device 1 will be explained.
FIG. 1 is a side view of the floor slab erection device 1, and the road surface 2 on which the floor slab erection device 1 is installed is formed with an upward slope from the right side to the left side in FIG. There is. The floor slab erection device 1 of the present invention is installed, for example, on a road surface 2 having an upward slope or a downward slope, and the floor slab erection device 1 is installed on the road surface 2 having an upward slope or a downward slope in any direction in the front and rear directions. It is designed to be movable so that work such as replacing floor slabs can be carried out.

However, on the road surface 2 having such a slope, it is extremely difficult for the floor slab erection device 1, which is moved by wheels, to descend or ascend from the viewpoint of safe driving. This is because there is a possibility that the floor slab erection device 1 will descend on the road surface 2 due to its own weight. This is why the floor slab erection device 1 according to the present invention was invented.

Here, the floor slab installation device 1 has a lower frame member 3 placed on a moving rail 9 constructed on a road surface 2 on which a floor slab is replaced. The lower frame member 3 includes a pair of lateral lower frames 4 extending in the longitudinal direction of the road surface 2 on both sides of the road surface 2 in the width direction. The pair of horizontal lower frames 4 are configured to have a rectangular frame shape, or have a vertical lower frame connected only on one side of the pair of horizontal lower frames 4 to form a substantially rectangular lower frame member 3. I don't mind if you do.

Further, on the pair of lower frame members 3, an apparatus main body frame 5 composed of a substantially rectangular parallelepiped frame is placed astride the lower frame members 3, and inside the apparatus main body frame 5. A work rail 6 is suspended and attached to the.
A hanging device 7 is suspended and held on the work rail 6 so as to be movable in the longitudinal direction of the work rail 6.

The lifting device 7 is configured to be able to lift a floor slab 8 that has been cut and peeled off from the road surface 2 for replacement, for example, and further rotate about 90 degrees in the horizontal direction and move in the longitudinal direction of the work rail 6. .

When the lifted floor slab 8 is moved along the work rail 6 to the inside of the device body frame 5, the floor slab 8 is lowered onto, for example, the loading platform of a transport vehicle that has already entered the device body frame 5. will be held. Thereafter, the lifting device 7 is moved and the next floor slab body 8 is replaced and transported.

When a transport vehicle enters the device body frame 5, either remove the vertical lower frame of the lower frame member 3 so that it does not get in the way, or remove the vertical lower frame etc. from the beginning and leave the device body frame 5 in that state. It is configured so that it can be placed inside the vehicle and can be transported.

A moving rail 9 is installed on a road surface 2 that is a steep slope. The moving rail 9 is fixed to the sloped road surface 2 by a rail fixture 10.
As understood from FIG. 1, the moving rail 9 is constructed by connecting two rail members in a straight line. That is, the movable rail 9 was formed by joining with the joining member 11 at a substantially intermediate position in the longitudinal direction.

This is because the road surface 2 on which the movable rail 9 is installed is not entirely formed in a straight line, but may curve left and right. In the present invention, the movable rail 9 is configured to be bent left and right in a substantially doglegged shape at the points connected by the joining member 11, so that the floor slab erection device 1 can be easily moved even on the road surface 2 that curves left and right. This meant that work such as replacing floor slabs could be done.

By the way, as shown in FIG. 2, the movable rail 9 has a substantially T-shaped cross section, and has a rail portion 12 extending linearly and horizontally and a widthwise intermediate position between the rail portions 12. It has a rail holding part 13 that hangs down in the vertical direction from the rail.

A plurality of support legs 14 are placed on the rail portion 12 to support the floor slab erection device 1 constituted by the device body frame 5 and the lower frame member 3.
The support legs 14 are provided so as to hang down from both sides in the longitudinal direction of the horizontal lower frame 4 constituting the lower frame member 3 in order to support the floor slab erection device 1, and the lower end surfaces of the support legs 14 are attached to the rail portions 12. It is placed on the rail portion 12 in close contact with the upper surface.

A sliding plate 15 is interposed between the upper surface of the rail portion 12 and the lower end surface of the support leg 14, so that the floor slab erection device 1 can easily ascend and move on the road surface 2 having an upward slope. It is said to reduce frictional resistance. Although the sliding plate 15 is normally attached to the lower end surface of the support leg 14, it may also be attached to the upper surface of the rail portion 12.

Furthermore, the sliding plate 15 must not be made of a material that has extremely low frictional resistance and will slide down to the downward slope side due to the weight of the floor slab erection device 1. It is necessary that the member has enough frictional resistance to prevent the floor slab erection device 1 from sliding down to the downward slope side due to its own weight. In the present invention, as an example, the sliding plate 15 is made of a SUS member.

As shown in FIG. 2, from both ends of the support leg 14 in the width direction, there are provided clipping portions 17 that engage with the rear surface 16 of the projecting portion of the rail portion 12. A roller 18 is provided which is movable in the direction.

By providing the pinching portions 17, the support legs 14, and by extension the floor slab erection device 1, are configured so that they do not easily derail from the rail portions 12, and the situation in which the support legs 14 are lifted off the rail portions 12 is prevented. Even when this occurs, the pinching member 17 locks onto the rear surface 16 of the projecting portion of the rail portion 12, thereby preventing the support leg 14 from lifting off from the rail portion 12.

As understood from FIG. 1, the support legs 14 are configured to be able to expand and contract in the vertical direction, and by expanding and contracting the support legs 14 attached to both ends of the horizontal lower frame 4, the floor slab erection device 1 It is constructed so that it can be kept level even if it is on a steeply sloped road surface 2.

Next, the installation and operation of the floor slab erection device 1 will be explained.
As shown in FIG. 1, a pair of moving rails 9 are fixedly installed on a road surface 2 having an upward slope. The movable rail 9 is fixed to the road surface 2 using a rail fixture 10.

During the work of fixing the movable rail 9, the floor slab erection device 1 is in a state of being lifted by an outrigger jack 19 that is installed in the front and back direction of the floor slab erection device 1 and is capable of extending and contracting in the vertical direction. It does not interfere with the fixing work of step 9.

Here, as described above, the movable rails 9 are joined together at the joint portion 20 located approximately in the middle in the longitudinal direction. That is, the moving rail 9 is constructed by joining a plurality of rail members, for example, two rail members, with a joining member 11.

This is because, as mentioned above, the road surface 2 on which work is to be performed is never a straight road surface, but there is a road surface 2 that meanders in the left and right directions, and there are cases where work must be carried out corresponding to such a road surface 2. Because there is.
When the moving rail 9 is fixed to the road surface 2, the support legs 14 of the floor slab erection device 1 are placed on the moving rail 9.

Here, two support legs 14 are provided on each longitudinal side of the pair of lower frame members 3 provided on both sides of the floor slab erection device 1 in the width direction, and normally four support legs 14 are provided on the moving rail 9. will be placed on. Then, as shown in FIG. 8, the floor slab erection device 1 is placed closer to the tip side of the moving rail 9. Here, the support leg 14 placed on the rear end side of the moving rail 9 is located behind the joint 20 of the moving rail 9. That is, the configuration is such that neither the support leg 14 placed on the leading end side of the moving rail 9 nor the support leg 14 placed on the rear end side of the moving rail 9 pass over the joint 20 of the moving rail 9. .

Reference numeral 21 indicates a hollow jack device. The hollow jack device 21 has a jack main body 22 having a cylindrical portion, for example, having a through hole 26, and a cylinder portion 25 formed of an actuating member such as a hydraulic pressure that protrudes from both ends of the through hole 26 in the longitudinal direction.

Further, the hollow jack device 21 has an elongated rod-shaped operating member 23 that penetrates the through hole 26 and the inside of the cylinder portion 25 and extends in the longitudinal direction. Both ends of the elongated rod-shaped operating member 23 are locked to both ends of the moving rail 9 (see FIGS. 1 and 8).

Furthermore, locking members 27 are attached to both ends of the jack main body 22 having a cylindrical portion so as to penetrate through the rod-shaped operating member 23 and come into contact with the cylinder portion 25 when the cylinder portion 25 operates to project. ing. The locking member 27 is configured to lock the rod-shaped operating member 23 at a predetermined position in the longitudinal direction. The floor slab erection device 1 connected to the jack main body 22 moves on the moving rail 9 by the length that the cylinder portion 25 protrudes while making contact with the jack body 22 .

As shown in FIGS. 1 and 8, the jack body 22 of the hollow jack device 21 is fixed to the floor slab erection device 1 by the jack body attachment member 24 at a substantially intermediate position in the longitudinal direction of the lower frame member 3 of the floor slab erection device 1. When the hollow jack device 21 is activated and the cylinder portion 25 protrudes from the end of the jack body 22, the floor slab erection device 1 is configured to be able to move in the longitudinal direction of the moving rail 9.

In the present invention, the rod-shaped operating member 23 is made of a threaded reinforcing bar, and the locking member 27 is made of a nut that is screwed into the threaded reinforcing bar, but the present invention is not limited to such a structure. Any member may be used as long as the locking member 27 can be locked at a predetermined position in the longitudinal direction of the long bar-shaped operating member 23.

As shown in FIG. 1, two jack bodies 22 of the hollow jack device 21 are attached to one side of the jack body attachment member 24 at approximately the middle position in the longitudinal direction of the pair of lower frame members 3, and two jack bodies 22 are attached to the other side of the jack body attachment member 24. Two are installed. Although the number of hollow jack devices 21 to be attached is not limited at all, it is preferable that two hollow jack devices 21 be attached to both sides of the jack body attachment member 24 for at least one lower frame member 3.

Next, the state of use of the floor slab erection device 1 according to the present invention will be explained.
As shown in FIGS. 1 and 8, the moving rail 9 is fixed on the sloped road surface 2 by a rail fixture 10. Then, as shown in FIGS. 1, 8, and 2, the support legs 14 are placed on the moving rail 9, and the supporting legs 14 are extended and contracted so that the floor slab erection device 1 can maintain its posture in the horizontal direction. It will be installed on 9th.

Here, a sliding plate 15 is attached to the lower end surface of the support leg 14, and even if the floor slab erection device 1 does not have wheels, it is configured to reduce frictional resistance and move smoothly on the moving rail 9. .

The floor slab erection device 1 installed as shown in FIG. 8 operates the above-described hollow jack device 21 to move backward on the upwardly sloped road surface 2. Here, the operation of the hollow jack device 21 will be explained.

The lower frame member 3 on one side, that is, the cylinder part 25 of the hollow jack device 21 attached to the side surface of the floor slab erection device 1 appearing in the drawing in FIG. 8, is moved from the left side to the right side in FIG. Make it stick out so that it moves to. That is, in FIG. 8, the cylinder portion 25 is made to protrude from the left side of the jack body 22 (see FIG. 8).

Then, due to the protrusion, the cylinder part 25 comes into contact with the locking member 27 and pushes it, and thereby the floor slab erection device 1 connected to the jack body 22 moves on the moving rail 9 from the left side to the right side in FIG. The vehicle then descends on an upwardly sloping road surface 2.

By the way, as shown in the lower part of FIG. 7, the cylinder part 25 of the hollow jack device 21 attached to the lower frame member 3 on the other side is connected to the floor slab erection device 1 shown in the drawing in FIG. The cylinder portion 25 of the hollow jack device 21 attached to the side surface of the hollow jack device 21 is operated to protrude in a direction opposite to the direction in which the cylinder portion 25 protrudes.

That is, when the cylinder portion 25 of the hollow jack device 21 attached to the side surface of the floor slab erection device 1 shown in the drawing in FIG. 8 protrudes to the left side in FIG. Move to the right.

During this operation, the cylinder portion 25 of the hollow jack device 21 attached to the side surface of the floor slab erection device 1, which does not appear in FIG. 8, is moved as shown in the lower part of FIG. The action of protruding to the right is performed.

Next, the cylinder part 25 of the hollow jack device 21 attached to the side surface of the floor slab erection device 1, which does not appear in FIG. Furthermore, it is moved to the right side in FIG. 8, that is, below the road surface 2, by the length of the protruding length of the cylinder portion 25.

During the operation of the cylinder part 25, the cylinder part 25 attached to the side surface of the floor slab erection device 1 shown in FIG. 8 is moved from the protruding right side to the left side.

In the next operation, the cylinder part 25 attached to the side surface of the removed floor slab erection device 1 shown in FIG. 8 is again projected from the left side to the right side. Then, the floor slab erection device 1 further moves to the right in FIG. 8, that is, below the road surface 2, by the length of the protruding length of the cylinder portion 25.
However, by repeating these operations, the floor slab erection device 1 is moved to the rear end side of the moving rail 9.

That is, in the present invention, as explained above, the hollow jack devices 21 provided on the left and right sides of the floor slab erection device 1 are operated alternately to move the floor slab erection device 1. In this way, the floor slab erection device 1 can be moved sufficiently with only the hollow jack device 21 on one side, and while the hollow jack device 21 on one side is in operation, the hollow jack device 21 on the other side has its cylinder portion 25 protruded. It has been restored to its original state. Therefore, in the present invention, the structure is such that the alternate protruding operation of the cylinder portions 25 can be started immediately.

This is also a major feature of the present invention. That is, it is also possible to move the floor slab erection device 1 by protruding the cylinder portions 25 of both hollow jack devices 21, but in this case, the work is not carried out while the protruding cylinder portions 25 are returned to their original retracted state. This is because the process will be interrupted, resulting in a loss of time.

However, as shown in FIG. 1, when the floor slab erection device 1 moves to the rear end side of the moving rail 9, the outrigger jack 19 is extended to raise the floor slab erection device 1 from the moving rail 9 and float it. In this state, the movable rail 9 is moved to the left side as viewed in FIG. 1, and the floor slab erection device 1 is reinstalled on the tip side of the movable rail 9 as shown in FIG. Then, the hollow jack device 21 is operated again to perform the floor slab replacement work.

By the way, according to the present invention, as described above, it can be used while moving forward on the sloped road surface 2, or it can be used while moving backward. Therefore, the peeled floor slab 8 can be lowered into a vehicle and used by moving backward for transportation, or it can be used by moving forward to install a new floor slab 8.

1 Floor slab erection device 2 Road surface 3 Lower frame member 4 Lateral lower frame 5 Apparatus body frame 6 Work rail 7 Hanging device 8 Floor slab body 9 Moving rail 10 Rail fixture 11 Joint member 12 Rail part 13 Rail holding part 14 Support leg 15 Sliding plate 16 Rear surface of overhanging part 17 Sandwiching part 18 Roller 19 Outrigger jack 20 Joint part 21 Hollow jack device 22 Jack body 23 Rod-shaped operating member 24 Jack body mounting member 25 Cylinder member 26 Through hole 27 Locking member

Claims (5)

A floor slab erection device having a pair of moving rails installed on a road surface, support legs placed on the pair of moving rails, and a hollow jack for moving the floor slab erection device in the longitudinal direction of the moving rails. comprising a device;
The hollow jack device includes a jack main body connected to both side surfaces of the floor slab erection device, a cylinder portion configured to penetrate through the jack main body and protrude from both end sides of the jack main body, and a cylinder portion that extends inside the cylinder portion. It has a rod-shaped operating member that is inserted through the rod-shaped operating member and whose both ends are locked to the moving rail, and a locking member that is attached to a predetermined position in the longitudinal direction of the rod-shaped operating member and is pushed by the protruding cylinder part,
moving the floor slab erection device in the longitudinal direction of the moving rail by the length by which the locking member is pushed by the cylinder part;
A jack movable floor slab erection device characterized by:
A plurality of the hollow jack devices are attached to one side of the floor slab erection device,
The jack movable floor slab erection device according to claim 1.
A sliding plate for reducing frictional resistance is interposed between the moving rail and the support leg placed on the moving rail.
The jack movable floor slab erection device according to claim 1 or 2, characterized in that:
Of the hollow jack devices attached to both sides of the floor slab erection device, the operation of only one hollow jack device on one side is alternately repeated to move the floor slab erection device in the longitudinal direction of the moving rail;
The jack movable floor slab erection device according to claim 1 or claim 2, characterized in that:
The movable rail is configured to bend in the left-right direction from a substantially intermediate position in the longitudinal direction, and is configured to be a movable rail that can be installed on a road surface that bends in the left-right direction.
The jack movable floor slab erection device according to claim 1 or claim 2, characterized in that:

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