JP2754265B2 - Traveling formwork support - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a traveling form support for supporting and moving an inner form and the like of a box culvert.

(Conventional technology) In constructing various culverts and elevated structures such as underpasses and pileways, various movable inner form devices are used, and the efficiency of construction has been improved.

As this kind of apparatus, for example, Japanese Patent Publication No. 63-51236
As shown in the official gazette, an inner form is supported on a supporting frame (cart) to which a caster is attached, so that traveling of the inner form, shaping and removal of the form can be performed. Used.

(Problems to be Solved by the Invention) By the way, the above-mentioned bogie has a structure in which a traveling caster is attached to a support at four corners of a support frame, and this support frame is formed by casting concrete. If the culvert or other structure to be constructed is large, it must support a large number of pillars in addition to the four corner pillars and distribute the load to each pillar. No. In this case, it is necessary to provide a means for easily switching the state between the traveling column and the state of supporting a large load on each column.

As a means, a camber or wedge is inserted between the strut and the floor surface when supporting the load of each strut, or a screw jack is provided at the lower end as in a conventional temporary strut, and the like is generally performed. However, in these conventional means, the operation of switching between traveling and supporting the load is troublesome, and the wedges are particularly removed to release the strut under heavy load from the floor surface. The problem is that the operation of loosening the screw and the jack is difficult, which requires a lot of manpower and time, and the advantage of using the movable formwork device is diminished. There is.

In addition, this type of equipment moves to the construction position along the rail provided on the floor surface and sets the formwork. In this case, the longitudinal positioning of the formwork is determined by the movement position on the rail. Although the adjustment can be easily performed, since the position of the form in the width direction is constrained by the facility position of the rail, the facility of the rail requires accuracy, and the facility takes much time. If it is found that the facilities of the rails are out of order after the equipment is carried in, reworking the rails requires a lot of trouble and time, which further reduces the work efficiency.

The present invention solves the above-mentioned problems, and enables the operation of switching the state between the traveling movement of each column and the state of supporting the load and the release of the load of the column to be easily performed without requiring a lot of manpower, and a rail. Even if the facilities are incorrect or the rail facilities are out of order, it is possible to easily adjust the position of the formwork in the width direction, thereby improving construction efficiency and economy. It is intended to provide a movable form support.

(Means for Solving the Problems) Regarding the configuration of the present invention for achieving the above object,
The present invention will be described with reference to the drawings corresponding to the embodiments. According to the present invention, columns 2,2,3,3 arranged vertically and horizontally are joined by horizontal frame members 4,4 to form a rectangular box frame 1, At the lower end of each of the columns 2 and 3, a lever rod 6 having a screw rod 14 provided with a seat 13 at the lower end screwed to one end so as to be able to move up and down freely is attached to the horizontal axis 10 so as to be tiltable. In addition, a caster device 16 having wheels 21, 21 that roll in the length direction of the construction structure provided so as to be vertically movable, and a width of the construction structure Castor device 17 provided with wheels 21, 21 that roll in the direction, which can be raised and lowered freely.
And is attached.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a box frame which forms a frame of the shoring, and corner pillars 2, 2 and middle pillars 3, 3 are arranged vertically and horizontally.
2,3,3 are connected to each other by horizontal frame members 4,4 so that the plane and sides are formed in a rectangular frame shape. 5,5 stringers for installation
Are combined.

A lever device 6 is provided at the lower end of each of the corner pillars 2 and the middle pillars 3, which are constituent members of the box frame 1. As shown in the enlarged views of FIGS. 5 and 6, this device has a mounting member 7 detachably provided at the lower ends of the columns 2 and 3.
In addition, a horizontally long frame-shaped lever 8 is pivotally connected to a horizontal shaft 10 at a position closer to one end from the center in the longitudinal direction. The lever rod 8 is provided with a seat plate 9 on the lower surface of a shorter rod part 8a than the pivot point of the horizontal rod.
In the tip of 8b, a piece member 11 having a screw hole 11a in the vertical direction is provided rotatably by horizontal pins 12, 12 in the direction crossing the rod portion 8b. Hole 11a
At the lower end, a screw rod 14 having a trapezoidally formed seat 13 rotatably provided is screwed into the lower end, and by rotating the screw rod 14, the screw rod 14 moves up and down. You can move to.

Each of the columns 2 and 3 comes into contact with the floor via the lever device 6 and receives the load when the concrete is poured. In this case, as shown in the figure, a short rod portion of the lever rod 8 is used.
The seats 15 and 15 are interposed between the lower surface of each of the seats 13 provided on the seat plate 9a and the long rod portion 8b and the floor surface. When the screw rod 14 at the end of the lever 8 is rotated, the lever 8 tilts, and the vertical position of the columns 2 and 3 can be adjusted and set via the horizontal shaft 10.

Also, on each of the four corner pillars 2 at the four corners, castor devices 16 and 16 for moving the box frame 1 in the longitudinal direction of the construction structure, that is, the longitudinal direction of the box frame 1, and the box frame 1 with the construction structure Are mounted, which are adjustable in the transverse direction of the box frame 1, that is, in the width direction of the box frame 1. The caster devices 16 and 17 have substantially the same configuration, and as shown in an enlarged view in FIG. 7, each of the caster devices 18 can be adjusted vertically by a hydraulic or screw type adjusting jack 19. A truck 22 having wheels 21, 21 provided at the lower end of the provided pillar 20 is detachably mounted by bolts and nuts 23, 23 and the like. The one castor device 16 is mounted on the corner post 2 via the brackets 24, 24 so that the wheels 21, 21 roll in the longitudinal direction of the construction structure, and the other castor device 16 17 its wheels 21,21
Is mounted on the corner post 2 via the brackets 24, 24 in such a manner as to roll in the width direction of the construction structure.

The traveling formwork support of the present invention is configured as described above, and one of the castor devices 16, 16 is mounted on a pair of rails 25, 25 laid on the floor of the foundation concrete in the structure to be constructed. It is mounted via the wheels 21 and 21 and travels and moves in the longitudinal direction of the construction structure. Then, the vertical beams 5,5 of the box frame 1
A slab formwork 26 is placed on top of the slab formwork 26.
At both ends, side wall forms 27, 27 are pivotally attached 29, 29 by tilting devices 28, 28 so as to be freely tiltable, so that a movable inner form device such as a culvert is constituted.

When moving the support of the present invention, as shown in FIGS. 3 and 8, the jack 19 of one of the castor devices 16 is extended, and the entire box frame 1 is lifted through the corner posts 2, 2. Then, the lower ends of the columns 2 and 3 are lifted, the abutments 15 and 15 inserted under the lever device 6 are removed, and the supports on which the formwork is mounted are supported by the caster devices 16 and 16 and the rails 25 and 25 Push the upper part, run it, and move the shoring to a predetermined enforcement position. At this time, when the position of the formwork placed on the shoring in the width direction of the construction structure is shifted from a predetermined state, as shown in FIGS. 4 and 9, the other castor devices 17, 17 are used. A short rail 30, 30 for lateral movement in a direction orthogonal to the rail 25 is provided at a lower position of the
At the same time, the jack 19 of one of the castor devices 16, 16 is contracted, and the wheels 21, 21 are raised from the rails 25, 25,
The shoring is supported by other castor devices 17, 17 and the wheels 21, 21
The shoring is moved on the rails 30, 30 via the, so that the position of the shoring in the width direction of the construction structure is adjusted.

In this way, after the support, that is, the position of the formwork to be mounted thereon is determined, the height of the frame 1 is adjusted by operating the jack 19 of the castor devices 17, 17, and the slab formwork 26 is moved. Set at a predetermined height position, and the seats 15,1 under the lever devices 6,6 of the columns 2,3
5, the screw rod 14 is rotated to adjust the tilting of the lever rods 8, 8, and the seat plate 9 and the seat body 13 are pressed against the seats 15, 15, respectively. The jacks 19 at 17,17 are contracted to raise the wheels 21,21. Thereby each castor device 16,
16,17,17 are raised from rails 25,30, and each support column
2 and 3 are directly supported on the floor via the lever device 6 and the seats 15 and 15, respectively. Concrete is poured in that state, and the vertical load accompanying it is
Will be shared.

After the cast concrete has hardened, the formwork 26, 27 is peeled off and moved to the next construction site.
First, the side wall frames 27, 27 are separated from the concrete by contracting the expansion / contraction device 28, and then, the screw rod 14 of the lever device 6 on each of the columns 2, 3 is rotated, so that the lever rod 8 is shown by a chain line in FIG. , The columns 2 and 3 are lowered, the height of the frame 1 is lowered, and the slab formwork 26 is peeled from the concrete. In this case, since a large load is applied to the struts 2, 3 by the cast concrete, it is extremely difficult to rotate the jack with the conventional strut provided with a screw jack at the lower end. As described above, the screw rod 14 to be rotated can be easily operated by using a lever.

After the formwork has been peeled off from the concrete, the jack 19 of each castor device 16 is extended, and the wheels 21, 21 are placed on the rails 25, 25. With the weight applied, the seats 15, 15 inserted under the columns 2, 3 are removed, and the rails 25, 25 are again moved and moved on the rails 25, 25 toward the next concrete work place. Hereinafter, the above work is repeated to proceed with the construction.

(Effects of the Invention) As described above, the form support of the present invention forms a rectangular box frame by connecting columns arranged vertically and horizontally with a horizontal frame member, and forms a rectangular box frame at the lower end of each of the columns. Is provided with a lever device in which a screw rod provided with a seat body at the lower end is screwed to one end so as to be able to move up and down so as to be tiltable around a horizontal axis. A caster device provided with wheels that roll in the length direction of the construction structure so as to be adjustable up and down, and a caster device with wheels that roll in the width direction of the construction structure provided so as to be adjustable up and down. Because of the configuration, the following excellent effects can be obtained.

(1) A lever device is provided at the lower end of each column of the box frame, and a caster device that can move up and down is provided at the columns at the four corners.
The traveling of the shoring can be smoothly performed, and the large load can be shared and received by the respective struts during the concrete casting, so that the weight of the shoring can be reduced as a whole.

(2) The operation of the screw rod to release the load by placing concrete received on each pillar is applied by leverage,
It can be light and work efficiency can be greatly improved.

(3) It has a caster device that can run in the length direction and the width direction of the construction structure, and each caster device can be adjusted up and down freely, so not only the traveling movement of the support but also the construction The movement of the structure in the width direction can be easily adjusted, so that it is not necessary to perform the rail facility accurately, and even if the rail facility becomes inconsistent, it is not necessary to correct the rail facility. The work involved is easy and efficient.

(2) Switching operation between traveling movement, width direction adjustment, and concrete placing can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a side view of a main part showing a state during traveling movement, and FIG. FIG. 5 is an enlarged front view showing a lever device, FIG. 6 is an AA sectional view of FIG. 5, FIG. 7 is an enlarged side view showing a castor device, and FIG. FIG. 9 is an enlarged side view showing a state at the time of running, and FIG. 9 is an enlarged side view showing a state at the time of adjusting the same width direction. DESCRIPTION OF SYMBOLS 1 ... Box frame, 2 ... Corner pillar, 3 ... Middle pillar 4 ... Horizontal frame material, 5 ... Vertical girder, 6 ... Lever device 8 ... Lever rod, 10 ... Horizontal axis 11 ... Piece member, 12 Pin 13 Seat, 14 Screw rod, 15 Standing 16, 17 Castor device, 18 Tube 19, Jack 20, 20 Pillar 21 Wheels, 22 …… carts 25,30 …… rails

Claims (1)

(57) [Claims] 1. A column box is formed by joining columns arranged vertically and horizontally with a horizontal frame member to form a rectangular box frame, and a screw rod having a seat at the lower end is provided at one end at the lower end of each column. Provided with a lever device with a lever rod that is screwed up and down so as to be tiltable around a horizontal axis, and a wheel that rolls in the length direction of the construction structure is raised and lowered at each corner post among the above-mentioned columns. A traveling form support, comprising: an adjustable caster device; and a caster device having wheels that roll in the width direction of the construction structure and are provided so as to be movable up and down.