JPH03107098A - Travelling type molding frame support - Google Patents

Abstract

PURPOSE:To improve the workability by connecting struts arranged vertically and horizontally with lateral frame members to form square box frame members, and providing lever devices in the lower part of each strut, and providing wheels in each corner freely to control vertically and freely to change the direction. CONSTITUTION:When the position of a working structure in the cross direction is dislocated from the predetermined condition, holding seats 15, 15 are inserted under lever devices 6, 6 of each corner strut 2, 2 to support the weight of a support with the corner struts 2, 2. Next, a jack 18 is shortened, and bolts 22, 22 are removed to change the direction of a truck 21 by 90 degree, and the truck 21 is fixed with the bolts 22, 22 again, while rails 29, 29 are laid in the direction transverse to a rail 24. Next, the jack 18 is extended to place the wheels 20, 20 on the rails 29, 29 and the wheels 20, 20 are moved on the rails 29, 29 to adjust the position. In the case that even if rail laying is inaccurate, the position can be thereby adjusted easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a traveling formwork support and maintenance system for supporting and moving the inner formwork, etc. of a box culvert.

(Prior Art) In constructing various types of culverts and elevated structures such as underground passages and tunnels, various types of movable internal formwork devices have been used to improve the efficiency of construction.

Conventionally, as this type of device, for example, Japanese Patent Publication No. 63-512
As shown in Publication No. 36, the inner formwork is supported on a support frame body (truck) to which casters are attached, so that the inner formwork can be moved and the formwork can be shaped and removed. is used.

(Problem to be Solved by the Invention) By the way, the above-mentioned truck has a structure in which the traveling casters are attached to the four corner pillars of the support frame.
Casting concrete supports the large load placed on the formwork, so if the structure to be constructed, such as a culvert, is large, in addition to the four corner supports, it is necessary to erect many center pillars for each support. The load must be distributed.

In this case, it is necessary to provide each support with a means for easily switching the state between traveling and supporting a large load.

Common methods for this include inserting a camber or wedge between the support and the floor when supporting the load on each support, or installing screws at the bottom end like in conventional temporary support. However, with these conventional means, it is troublesome to switch between traveling and supporting a load, and it is especially difficult to remove the wedge to release the column from the floor when it is under heavy load. The problem is that the operation of loosening screws and screws is difficult and requires a lot of manpower and time, which negates the advantage of using mobile formwork equipment. be.

In addition, this type of equipment moves along rails installed on the floor to the construction position and sets the formwork, but in this case, the longitudinal positioning of the formwork is determined by the movement position on the rails. This can be easily done by adjusting, but since the widthwise position of the formwork is restricted by the position of the rail facility, accuracy is required for the rail facility, and the facility takes a lot of time. If it is discovered that there is a problem with the rail facilities after the equipment is delivered, it will take a lot of time and effort to repair the rails, further reducing work efficiency.

The present invention solves the above-mentioned problems and makes it possible to easily change the state of each support column between traveling movement and load support, and to release the load on the support column without requiring much manpower. Even if the rail facilities are inaccurate or the rail facilities are out of order, the position of the formwork can be easily adjusted in the middle direction, improving construction efficiency and economic efficiency. The aim is to provide mobile formwork shoring.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained with reference to the drawings corresponding to the embodiments. 3 are connected by horizontal frame members 4.4 to form a square box frame l, and at the lower end of each of the above-mentioned columns 2.3, a threaded rod I4 with a seat 13 provided at the lower end is attached at one end. A lever device 6 is provided in which a lever lever 8 is screwed so that it can be raised and lowered so as to be tiltable around a horizontal axis 10, and wheels 20 and 20 are mounted on each corner post 2, 2 of the above-mentioned pillar so that it can be adjusted up and down. It is characterized by being equipped with a caster device 16 which is provided in a direction changeable manner.

(Example) Hereinafter, an example of the shoring structure of the present invention will be described with reference to the drawings.

In the figure, 1 is a box frame that forms the framework of the shoring.
Corner pillars 2.2 and middle pillars 3, 3 are arranged vertically and horizontally, and these pillars 2.2, 3.3 are connected to each other by horizontal horizontal frame members 4.4 to form a frame whose plane and side surfaces are square. A lever device 6 is provided at the lower end of each of the columns 3 in order to place a formwork on the upper end of the columnar columns. As shown in enlarged views in FIGS. 7 and 8, this device has a lever 8 formed in the shape of an oblong frame on a mounting member 7 that is removably provided at the lower end of the support column 2.3. At a point closer to one end than the center in the length direction, the horizontal axis 1
It has a structure in which it is pivotally mounted so that it can freely tilt.

The lever rod 8 is provided with a seat plate 9 on the lower surface of the shorter rod portion 8a than the pivot point on the horizontal axis, and inside the tip of the longer rod portion 8b, there is a seat plate 9 for vertical movement. A bridge member 11 having a screw hole 11a screwed therein is rotatably provided by a horizontal pin 12.12 extending in a direction across the rod portion 8b. A screw rod 14 rotatably provided on the formed seat body 13 is screwed together, and by rotating the screw rod 14, the screw rod 14 is raised and lowered, so that the position of the seat body 3 can be moved up and down. There is.

Each support column 2.3 comes into contact with the floor surface via the lever device 6 and receives its load during concrete pouring. In this case, as shown in the figure, a seat 15.15 is inserted between the lower surface of the seat body 13 provided on the seat plate 9 of the short lever portion 8a of the lever lever 8 and the floor surface of the seat body 13 provided on the long lever portion 8b. Then, by rotating the screw rod 14 at the end of the lever 8, the lever 8
A caster device 16, 16 is installed for tilting the column 2 so that the vertical position of the column 2.3 can be adjusted and set via the horizontal axis IO. This caster device 16 is the ninth
As shown in the enlarged views in FIG. 1 and FIG. 10, a bogie is equipped with wheels 20 and 20 at the lower end of a pedestal 19 that is provided on a pedestal 17 so that it can be raised and lowered by an adjustment jack 18 such as a hydraulic or screw type. 2I is removably attached with bolts and nuts 22, 22, etc., and by changing the attachment position, the wheel 20.
20 rolls in the longitudinal direction of the construction structure, that is, the longitudinal direction of the box frame l, as shown in FIG. It can be changed to any position, and is attached to the corner post 2 via brackets 23 and 23.

The traveling formwork support of the present invention is constructed as described above, and the wheels 20 of castor devices 16 and 16 are attached to a pair of rails 24° 24 laid on the foundation concrete floor of the structure to be constructed. .20, and is moved in the longitudinal direction of the constructed structure. A slab formwork 23 is placed on the longitudinal girder 5.5 of the four bodies 1, and side wall formworks 26° 26 are installed at both ends of the slab formwork 25.
7.27, the pivots 2B and 28 are pivoted so that the tilting can be adjusted,
A moving formwork device such as a culvert will be constructed.

When moving the shoring of the present invention, as shown in FIGS. 3 and 4, the jacks 18 of the caster device 16 are extended, and the corner posts 2
．． 2, lift the entire frame l to lift the lower end of each support column 2.3, and lift the temporary seat 15.15 inserted under the lever device 6.
16.16.
The shoring is supported by and pushed forward and runs on the rails 24.24 to move the shoring to a predetermined execution position. At that time, if the position of the formwork mounted on the shoring in the width direction of the construction structure deviates from the predetermined state, both ends of the lever rods 8, 8 of the lever device 6.6 of each corner post 2.2 Temporary 15.15 under the department
Insert it, rotate the screw rod 14, and attach the seat plate 9 and the seat body I3 respectively! The weight of the shoring is supported by the corner posts 2.2 by applying pressure of 5.15 J. Then, retract the jacks 18 of each caster device 16, remove the bolts and nuts 22, 22, change the direction of the truck 21 by 90 degrees from the state shown in FIG. 9 to the state shown in FIG. 10, and tighten the bolts and nuts 22 again. .22, and short rails 29.29 for lateral movement in a direction perpendicular to the rails 24 are installed on both sides of the rail 24 located below the caster assembly 16.
Extend the jack 18 of 6 and connect the wheel 20.20 to the rail 29.
29, the shoring is supported by the caster system 16.16, and the shoring is moved to the rail 29°2 via the wheels 20.20.
9 to adjust the position of the shoring in the width direction of the construction structure (see FIGS. 5 and 6).

In this way, the slab formwork 25, which is a formwork mounted on the shoring, is set at a predetermined height position, and the supports 15, 15 are placed under the lever devices 36.16 of each support 2.3. insert it, rotate the screw rod 14 to adjust the tilting of the lever rods 8, 8, and remove the seat plate 9.
and the seat body 13 are pressed against the respective seats 15.15, and then the jacks 18 of each castor device]6 are compressed and the wheels 22.
Raise 22. As a result, each caster device 16 rises above the rail 24.24, and each support column 2.3 of the shoring is supported directly on the floor via the respective lever device 6 and dowel 15.15. Concrete is placed in this state, and the resulting vertical load is applied to each column 2.
The cost will be divided into three.

After the poured concrete has hardened, the formwork is peeled off and moved to the next construction site, but in order to do so, the direction of the cart 21 of the caster device 16 must be changed to the state shown in Fig. 9. At the same time, the threaded rod 1 of the lever device 6 on each column 2.3
By rotating the lever 4 and tilting the lever 8 as shown by the chain line in Fig. 7, each support 2.3 will be lowered, the height of the oil body I will be lowered, and the formwork 23 will be separated from the concrete. become. In this case, each column 2.3 is subjected to a large load due to the poured concrete, so in conventional columns with screws at the F end, it is very difficult to rotate the screws. As mentioned above, since the screw rod 14 to be rotated uses a lever, it can be easily operated. Note that the side wall formwork 26 is equipped with an expansion device 27.
By contracting the concrete, it is tilted inward and peeled away from the concrete.

After separating the formwork from the concrete, each caster device 16
Extend the jack 18 and move the wheel 20°20 to the rail 24.
Place it on the rail 24.24 and place it on the rail 24.24 again by removing the supports 15°15 inserted under each support column 2.3 so that the weight of the shoring and formwork is applied to the caster device 16.16. The machine moves toward the next concrete construction site.

Construction continues by repeating the above steps.

(Effects of the Invention) As explained above, the formwork support of the present invention connects columns arranged vertically and horizontally with horizontal frame members to form a rectangular box frame body, and the lower end of each of the columns is is equipped with a lever device in which a screw rod with a seat at its lower end is screwed to one end so that it can be raised and lowered, and the lever is tilted around a horizontal axis. , since it is equipped with a caster device with wheels that can be adjusted up and down and can change direction,
It has the following excellent effects.

(1) A lever device is provided at the lower end of each column of the box frame body, and caster devices that can be raised and lowered are provided on the four corner columns.
Not only can the shoring move smoothly, but also the large load during concrete pouring can be shared between each support, making the overall weight of the shoring lighter.

(2) Switching operations between traveling and concrete placement can be easily performed.

(3) The operation of the screw rod, which releases the load due to concrete pouring on each support column, utilizes a lever.
It can be done easily and work efficiency can be greatly improved.

(4) Since the caster device allows the wheels to change direction freely, it is easy to adjust the movement of the shoring in the middle direction of the construction structure, so there is no need to precisely construct the rails, and Even if the rail facility is out of alignment, there is no need to correct it, and the work associated with the rail facility can be done easily and efficiently.

[Brief explanation of drawings]

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a front view of main parts showing the state during traveling, Fig. 4 is a side view of the same, Fig. 5 6 is a side view of the same, FIG. 7 is an enlarged front view of the lever device, and FIG. 8 is a sectional view taken along line A-A in FIG. 7. , FIG. 9 is an enlarged side view showing the caster device, and FIG. 1θ is a view showing the same wheel after the direction has been changed. ■...Box frame body 2...Corner post 4...Horizontal frame material 5...Vertical girder 8...Leverage rod 10...Horizontal shaft 11...Block member 12...Pin 13 ... Seat body 14 ... Screw rod 16 ... Caster device 17 ... Leg cylinder 18 ... Jacket 19 ... Pillar 20 ... Wheel 21 ...
Trolley 24.29...Rail

Claims (1)

[Claims] A rectangular box frame is formed by connecting columns arranged vertically and horizontally with horizontal frame materials, and a threaded rod with a seat at the lower end is screwed into one end of each column so as to be able to rise and fall freely. A lever device was installed in which a lever lever was attached so that it could be tilted freely around a horizontal axis, and a caster device was installed on each corner pillar of the above-mentioned pillar, with wheels that could be adjusted up and down and changed direction. A traveling formwork shoring system that is characterized by: