JP2002121709A - Inner form carriage provided with self-traveling means, and usage thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner form carriage provided with a self-traveling function by providing a self-traveling means in the inner form carriage itself to be used when placing concrete panels onto a main girder of a bridge in a construction field. SOLUTION: An inner form carriage 4 is provided with a driving source 7, and a slide member 10 is provided in a transmitting means 9 such as a chain and a belt fitted to the driving source 7, and the slide member 10 to be moved in the horizontal direction and a reaction force transmitting member 12 provided in a lateral beam 2 are engaged with each other so as to transmit the reaction force to the lateral beam 2 so as to move the inner form carriage 4. Plural moving means are provided in one inner form carriage 4 in both sides of right and left in relation to the forward/backward moving direction, and each drive distance is changed so as to change direction of the inner form carriage 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner form carrier in a movable form device used for placing a concrete floor slab on a main girder of a bridge on site and a method of using the same.

[0002]

2. Description of the Related Art In recent years, the casting of concrete using a movable form device has been widely used, especially for a bridge with a small number of girders with a reduced number of girders. FIG. 3 shows a front view of the movable formwork device used for this decimal girder bridge. In FIG. 3, the bridge is composed of two main girders 1 arranged in parallel and a horizontal girder 2 connecting them, and concrete is cast on the upper surface between the main girders and on both sides. Therefore, the formwork is an inner form carrier 4 having an inner form provided between the two main girders 1,
It is composed of an outer frame carrier 5 having outer frame frames provided on both sides.

A side view of the inner form carrier 4 is shown by AA in FIG.
FIG. 4 is a view as viewed from the direction of the arrow, and a conventional method of moving the inner form carrier 4 will be described with reference to FIG. When the concrete placement is completed, it is necessary to move the inner form carrier 4 for the next placement. Conventionally, to move the inner form carrier 4, a winch / chill hole 6 is installed on the cross beam 2 in the destination direction,
The wire was connected to the inner form carrier 4 and the inner form carrier 4 was moved sideways by the winding force of the winch / chill hole 6. After that, when the concrete was cast at that position, the work of rearranging the winch / chill hole 6 on the cross beam 2 in the destination direction was performed again, and the same process was repeated.

[0004] The casting of concrete for a bridge is not performed continuously in one direction, but is performed rightward after the first casting, and then extended to the left. In other words, if the casting is continuously extended in one direction, a biased load is applied to the pier or concrete floor slab, which greatly affects the concrete strength and shape accuracy. . Therefore, it is necessary to move the winch / chill hole 6 not only in one direction but also in the opposite direction to the previous one, and to change the inner form carrier 4 to the cross beam 2. Preparatory work took a lot of time and effort.

[0005] Further, even if a force in only one direction using the winch / chill hole 6 is applied to the construction of a bridge having a curve, it is impossible to move the inner form carrier 4 at an angle. A chain block 16 is provided in the vehicle, and forces are applied in a plurality of directions to change the direction of the inner form carrier 4 and move it. (Refer to FIG. 5.) Further, since only a force in one direction in the moving direction can be applied, the chain block 16 is also used for fine adjustment of the positioning, or the winch / chill hole 6 is moved to apply a force in the opposite direction. I was

[0006]

However, in the conventional method, the work of changing the winch / chill hole 6 is required every time the inner frame carrier 4 moves, so that it takes a long time and a large number of workers are required. In addition, since the operation is performed at a high place, safety is also an issue, which is a major factor in increasing costs and man-hours. Furthermore, even when a small position adjustment is required, such as when constructing a bridge having a curve, the force is applied not only in one direction but also in multiple directions or in the opposite direction. It is necessary to install the blocks 16, and since the position adjustment of these blocks determines the minute distance of movement of the inner form carrier 4 based on the balance of the amount of tension of each of the plurality of chain blocks 16, the adjustment work is particularly necessary. Takes time. Also,
During these operations, idle time of the formwork occurs, and the number of construction steps is wasted. Accordingly, an object of the present invention is to provide a self-propelled moving means on the inner frame carrier itself to provide an inner frame carrier having a self-propelled function.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a self-propelled moving means for an inner form carrier for moving on a cross beam and placing a concrete floor slab on a bridge. A drive source installed on the frame carrier and equipped with a speed reducer, a reversing rotator rotatably provided on the same inner frame carrier, a transmission means wound around the reversing rotator to transmit force, and The slide member is fixed and moves together with the transmission means, and the reaction force transmitting member is fixed to the cross beam and engages the slide member to transmit the force of the drive source to the cross beam. Further, when constructing a bridge having a curve using an inner form carrier having a plurality of the self-propelled moving means, the self-propelled moving means is disposed on both left and right sides with respect to the moving direction of the inner form carrier, and A method of moving an inner form carrier provided with self-propelled moving means for changing the left-right direction of the inner form carrier by changing the driving distance of the self-propelled moving means arranged in the vehicle.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a side view of the moving means of the inner form carrier of the present invention. The moving means is provided at a central portion of the inner form carrier. A motor is provided on the inner frame carrier 4 itself as the drive source 7, and the rotating body 1
Attach a chain wheel as 7
A chain wheel is similarly provided as a reversible rotating body 8 rotatable on itself, and a chain is attached as transmission means 9 to convert the rotational movement of the drive source 7 into a circular movement.

The transmission means is fixed to the orbiting transmission means 9 and is driven in the horizontal direction, and is engaged with the cross beam 2 to transmit the rotational force of the drive source 7 to the cross beam 2 as a horizontal force. 9 is provided with a slide member 10. The slide member 1
Numeral 0 is driven in the horizontal direction along the guide rails 18 provided above and below the frame member of the inner frame carrier 4 without shifting the position.

The slide member 10 and the cross beam 2 are provided with a reaction force support member 11 on the slide member 10 side and a reaction force transmission member 12 on the cross beam 2 side for transmitting a force by engaging with each other. . The reaction force support member 11 is engaged with a reaction force transmission member 12 which is detachably fixed to an arbitrary cross beam 2, thereby transmitting the horizontal moving force of the inner form carrier 4 to the cross beam 2. As a result, the inner form carrier 4 moves on the cross beam 2. The reaction force support member 11 is configured to be fixed at two positions, upper and lower. When fixed at the upper position, the reaction force support member 11 is fixed at a position that does not engage with the reaction force transmission unit 12 and fixed at the lower position. In this case, it is fixed at a position where it engages with the reaction force transmitting section 12.

FIG. 2 is a sectional view of the slide member 10.
In FIG. 2, the reaction force support member 11 is fixed to the slide frame 14 by inserting a pin 13 at a lower position, that is, a position where the reaction force transmission member 12 is engaged. In order to change the fixing position, the pin 13 is removed, the reaction force supporting member is moved to the upper position, that is, the position where the reaction force transmitting member is not engaged, and then the pin 13 is inserted and fixed. At this time, it may be detachable and fixed by bolts instead of the fixing pins 13.

Next, the procedure when the inner form carrier 4 moves will be described with reference to FIG. FIG. 6 shows a side view of the movable form carrier 4 during movement. As shown by the solid line in FIG. 6, the slide member 10 of the moving means cannot be driven further leftward in FIG. 6, and the reaction force support member 11 and the reaction force transmission member 12 are engaged.

Therefore, as described above, the fixed position of the reaction force support member 11 is changed to the upper position so that the reaction force transmission member 12 is not engaged, and the drive source 7 is rotated counterclockwise to move the slide member 10 as shown in FIG. 6 Drive in the right direction. Also, horizontal beam 2
Then, the reaction force transmitting member 12 fixed with bolts or the like is removed, moved to the cross beam 2A in the traveling direction (rightward in FIG. 6), and fixed. The slide member 10 is driven to the position of the transferred reaction force transmitting member 12A, and the fixed position of the reaction force supporting member 11 is changed to the lower position to bring the reaction force supporting member 11 into engagement with the reaction force transmitting member 12A. . Thereafter, by rotating the drive source 7 clockwise, the inner form carrier 4 moves rightward in FIG. Further, in the next movement step, the same step is repeated to move the inner form carrier 4. At this time, the reaction force transmitting member 12A attached to the cross beam 2A is
A may be installed at a plurality of locations.

The reaction force supporting member 11 and the reaction force transmitting member 12
Each of them has a shape like projections and depressions that can be engaged with each other to transmit a force in either the left or right direction in FIG. Therefore, the inner form carrier 4 can freely move forward and backward by switching the drive source 7 between normal rotation and reverse rotation, so that not only a force in one direction but also a force in a reverse direction can act. At this time, the reaction force supporting member 11 and the reaction force transmitting member 12 can transmit the force in the same manner even when the reaction force supporting member 11 and the reaction force transmitting member 12 are detachably fixed using pins or bolts instead of being engaged in the above-described shape. When the distance between the driving source 7 and the reversing rotating body 8 is increased, the moving distance is increased, and the working efficiency is further improved. In the above embodiment, a motor is used for the drive source 7, but a cyclo reducer may be used. Furthermore, the rotating body 1
A similar effect can be obtained by using a pulley for the reversing body 7 and the reversing rotating body 8 and using a belt for the transmission means 9.

As a second embodiment, the power of the drive source 7 per vehicle can be reduced by providing a plurality of moving means having the same functions as those of the above-described embodiment on one inner frame carrier 4. .

Further, as a third embodiment, when it is necessary to move the inner form carrier 4 while turning it to the left and right as in the case of moving a bridge having a curve, a plurality of moving means are required. , On both the left and right sides with respect to the direction
It is possible to cope by using a method of changing each driving distance.

As a method of changing the driving distance of each of the plurality of moving means, a first example is to change the driving speed of the slide member 10 for transmitting the reaction force of each of the plurality of moving means. By moving the slide members 10 driven at different speeds for the same time, the drive distances of a plurality of moving means can be changed. As a second example, the driving times of the plurality of slide members 10 are respectively changed. By changing the drive time of the slide members 10 driven at the same speed, the drive distance of the moving means having a plurality of units can be changed.

By changing the driving distances of the respective moving means in such a manner, it is possible to cause a difference in the left and right moving distances of the inner form carrier 4 to change the left-right direction of the inner form carrier 4. it can. If the driving distance of the moving device inside the curve is reduced and the driving distance of the moving device outside the curve is increased, the locus of movement of the inner form carrier 4 becomes curved. Therefore, the man-hours required for installing and adjusting the plurality of chain blocks 16 in order to apply forces in a plurality of directions are greatly reduced, and the adjustment of the bending angle and the minute movement distance can be easily performed. It can easily cope with the construction of bridges with curves.

[0019]

As described above, according to the first aspect of the present invention, the work of moving and changing the winch / chill hole 6 becomes unnecessary, and the inner frame 4 can be easily moved. Thus, the working time and the number of workers are reduced, the working efficiency is improved, and the number of working steps is reduced. In addition, the reverse movement of the inner form carrier 4 becomes possible, and fine adjustment of the moving distance can be easily performed. According to claim 2, the driving source 7 of the moving device
By providing a plurality of power supplies, the power per unit can be reduced, and the cost can be reduced. According to the third aspect, it is easy to cope with the construction of a bridge having a curve, and the minute movement distance can be adjusted.

[Brief description of the drawings]

FIG. 1 is a side view of a moving device of an inner form carrier according to the present invention.

FIG. 2 is a sectional view of a slide member according to the present invention.

FIG. 3 is a front view of a conventional movable form device.

FIG. 4 is a view taken in the direction of arrows in FIG. 3A-A.

FIG. 5 is a diagram showing a conventional method of moving an inner form carrier when constructing a bridge having a curve.

FIG. 6 is a side view of the inner form carrier during movement according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 7 drive source 8 reversing rotating body 9 transmission means 10 slide member 11 reaction force support member 12 reaction force transmission member

Claims (3)

[Claims] Claims: 1. An inner form carrier for driving a concrete floor slab on a bridge by moving on a cross beam and rotating to the same inner form carrier as a drive source provided on the inner form carrier and equipped with a speed reducer. A reversing rotator provided freely, a transmission means wound around the reversing rotator to transmit a force, a slide member fixed to the transmission means and moving with the transmission means, and a slide member fixed to the cross beam and fixed to the cross beam. A self-propelled moving means, comprising: a reaction force transmitting member that transmits a force of a drive source to the cross beam by engaging. 2. An inner form carrier with self-propelled moving means, wherein a plurality of said self-propelled moving means are provided in one inner form carrier. 3. When constructing a bridge having a curve using an inner form carrier having a plurality of self-propelled moving means, the self-propelled moving means is disposed on both the left and right sides with respect to the moving direction of the inner form carrier. A method of moving an inner form carrier provided with self-propelled moving means for changing the left-right direction of the inner form carrier by changing the driving distance of self-propelled moving means arranged on both the left and right sides.