JPH03107097A - 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 a square box frame member, and installing lever devices in the lower part of each strut and installing leg wheel devices provided in each corner pillar freely to elevate. CONSTITUTION:A jack 18 of a leg wheel device 16 is extended to hold up a box frame member 1, and the box frame member 1 is supported by the device 16 while it is pushed for travelling on rails 22, 22. Next, after moving to the predetermined position, the jack 18 of the device 16 is operated to set a slab mold frame 23 at the predetermined height position, and holding seats 15, 15 are inserted under lever devices 6, 6 of each struts 2, 3 to rotate a screw 14, and levers 8, 8 are inclined for adjustment, and a seat plate 9 and a seat member 13 are respectively pressed to the holding seats 15, 15 to provide the frame member 1. Next, after the concrete is hardened, the screw 14 is rotated to incline the levers 8, and each strut 2, 3 is made to fall to remove a mold frame 23 from the concrete.

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 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. There have been requests for improvement in this respect.

The present invention solves the above-mentioned problems, and makes it possible to easily switch the state of each support column between traveling and supporting a load, and to release the load on the support without requiring much manpower.
The purpose of this invention is to provide a mobile formwork support that can improve construction efficiency and economic efficiency.

(Means for Solving the Problems) The structure of the present invention to achieve the above object,
To explain with reference to the drawings corresponding to the embodiments, the present invention connects columns 2.2.3.3 arranged vertically and horizontally with horizontal frame members 4, 4 to form a rectangular box frame 1. Each pillar above 2.3
A lever device 6 is provided at the lower end of the lever device 6, in which a lever 8, which has a threaded rod 14 provided with a seat 13 at its lower end and is screwed to one end so as to be able to rise and fall freely, is attached so as to be tiltable around a horizontal axis 10. Each corner post 2.2 of the support is equipped with a caster device 16 having wheels 20.20 that can be adjusted up and down.

(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 six 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. The vertical beams 5, 5 for mounting the formwork are connected to the upper ends of the vertical columns.

A lever device 6 is provided at the lower end of each of the corner pillars 2 and middle pillars 3, which are constituent members of the box frame body l.

As shown in enlarged views in FIGS. 5 and 6, this device is attached to a mounting member 7 removably provided at the lower end of the support column 2.3.
The lever 8, which is formed in the shape of a horizontally long frame, is pivotably mounted around a horizontal axis 1O at a position closer to one end than the center in the longitudinal direction.

This lever 8 is provided with a seat plate 9 on the lower surface of the shorter lever part 8a than the point where it pivots on its horizontal axis, and a seat plate 9 is provided in the tip of the longer lever part 8b. A piece member II into which a screw hole 11a is screwed is mounted on a horizontal pin 12.12 in a direction that crosses the rod portion 8b so as to be freely rotatable. A screw rod 14, which is rotatably provided with a molded seat body, is screwed together, and by rotating the screw rod 14, the position of the seat body 13 can be moved up and down.

During concrete pouring, each support column 2.3 comes into contact with the floor surface via the screw W6 and receives its load. 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
By tilting, the vertical position of the column 2.3 can be adjusted and set via the horizontal axis IO.

Caster devices 16, 16 for moving the box frame 1 are attached to the corner posts 2, 2 at the four corners. As shown in an enlarged view in FIG. 7, this caster device 16 has a leg r: 417
It has a structure in which a wheel 20.20 is provided at the lower end of a pedestal I9 that can be freely adjusted up and down using an adjustment jack 18 such as a hydraulic or screw type, and is attached to the corner post 2 via a bracket 21.21. ing.

The traveling formwork support of the present invention is constructed as described above, and the wheels of the heavy leg necks 16-16 are attached to a pair of rails 22°22 laid on the foundation concrete floor of the structure to be constructed. 2Q-20, and is moved in the longitudinal direction of the construction structure. A slab formwork 23 is mounted on the vertical beams 5, 5 of the box frame I, and side wall forms 24°24 are provided at both ends of the slab formwork 23, and the tilting can be freely adjusted by expansion and contraction devices 25.25. The movable formwork apparatus such as a culvert is constructed by being pivotally mounted 26, 26 to the .

When moving the shoring of the present invention, as shown in FIGS. 3 and 4, the jacks 18 of the caster device I6 are extended and the corner posts 2
．． 2, lift the entire box frame 1 to lift the lower end of each support column 2.3, and place the temporary seat 15.1 inserted under the lever device 6.
5 is removed and the shoring on which the formwork is mounted is moved to the caster device 16.1.
6 to push and run on the rails 22 and 22. After the shoring has been moved to the designated execution position,
By operating the jacks 18 of the caster devices 16 and 16, the height of the box frame body ■ is adjusted to set the slab formwork 23 at a predetermined height position, and the bottom of the lever devices 6, 6 of each support 2, 3 is Temporarily 15
15, rotate the screw rod 14 to adjust the tilting of the lever 8.8, and move the seat plate 9 and the seat body 13 to the respective positions 15.
15, and then the jacks 18 of each caster device 16.
retract and raise the wheel 20.20. Thereby,
Each caster system 16 is raised above the rails 22, 22, and each support column 2, 3 of the shoring is directly supported on the floor via a lever system 6 and a dowel 15.

In this state, concrete is poured, and the accompanying vertical load is shared by 2.3 of the columns.

After the poured concrete has hardened, the formwork is peeled off and moved to the next construction site.
．． By rotating the threaded rod 14 of the lever device 6 at 3 and tilting the lever 8 as shown by the chain line in FIG. The formwork 23 will be peeled off from the concrete. In this case, each column 2.3 is subject to a large load due to the poured concrete, so in conventional columns with screws at the bottom end, it is very difficult to rotate the screws.
In the present invention, as described above, the screw rod 14 to be rotated uses a lever, so that it can be easily operated. In addition, is it possible to contract the expansion device 25 for the side wall formwork 24? Is it more inward? This tilts the concrete and causes it to peel off from the concrete.

After peeling off the formwork 23 from the concrete, extend the jacks 18 of each caster device 16 and move the wheels 20, 20 onto the rail 2.
2.22 so that the support and formwork support can be supported on the caster device 16.16, remove the temporary seat 15.15 inserted under each support column 2.3, and place it on the rail 22 again. .2
2. Move the top to 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 - A lever device is provided 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 attached to be tiltable around a horizontal axis. Since this is equipped with a caster device having wheels that can be adjusted up and down, 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, which can reduce the weight of the shoring as a whole.

(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.

[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 is an enlarged front view of the lever device, No. 6
The drawings are a sectional view taken along the line A-A in FIG. 5, and FIG. 7 is an enlarged side view showing the caster device. l...Box frame body 2...Corner pillar 3...Middle pillar 4.
・Horizontal frame material 5 ・Vertical girder 6 ・ Leverage device 8 ・
... Lever lever lO ... Horizontal shaft 11 ... Piece member 12 ... Bin 13 ... Seat body 14 ... Screw rod I5 ... Dowel 16 ... Caster device I7 ... Leg Tube 18... Jacket 19... Pillar 20... Wheel 22...
・Rail Figure 5 Figure 6 Figure 7 0 0

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. The present invention is characterized in that a lever device is provided in which a lever lever is attached so as to be tiltable around a horizontal axis, and a caster device in which wheels are provided on each corner post of the above-mentioned pillar so as to be freely adjustable in elevation is provided. , mobile formwork shoring.