JPH03194063A - Running type form timbering - Google Patents

Abstract

PURPOSE:To decrease the weight of a timbering by forming a timbering in box forms and providing the box forms with a load releasing device capable of approaching and parting by means of a screw lever and a leg wheel device capable of elevating a wheel and rolling in the direction of the width of a construction structure. CONSTITUTION:Box forms 1 are formed such that longitudinal and lateral stays 2, 2, 3, and 3 are intercoupled through lateral frame materials 4 and 4. A shaft lever 11 is pivotally mounted to the lower end parts of the stays 2 and 3 and an inclinable load releasing device 6 capable of approaching and parting is mounted. A leg wheel device 20 capable of elevating wheels 24 and a leg wheel device 21 regulated for movement in the direction of the width of the box forms 1 are mounted to the corner stays 2 and 2. During running movement, rails 24 are smoothly moved through the working of the leg wheel device 20, and installation of the rails 24 facilitates regulation in the direction of the width of forms by means of the leg wheel device 21. This constitution facilitates operation to switch between running movement and load release.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a traveling formwork support 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 was supported on a support frame body (truck) to which casters were attached, so that the inner formwork could be moved, adjusted, and demolded. something is being 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 in the width direction can be easily adjusted, 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 joined by horizontal frame members 4.4 to form a square box frame 1, one end of which is pivoted to the lower end of each of the pillars 2.3, and the other end is connected to a threaded rod 17. A pair of lever rods 11.1 connected so as to be able to come and go
A load release device 6 is attached to one of the lever rods 2 so as to be tiltable around the horizontal axis 10, and a load release device 6 is attached to each corner post 2 in the above-mentioned support. wheel 26
The present invention is characterized in that it is equipped with a caster device 20 that is provided with a wheel 26 that can be adjusted up and down, and a caster device 21 that is provided with wheels 26 that can be adjusted up and down to roll in the width direction of the construction structure.

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

In the figure, l 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 load release device 6 using a lever is installed at the lower end of each of the corner pillars 2 and middle pillars 3, which are the constituent members of the box frame l.
is installed.

As shown in enlarged views in FIGS. 5 to 7, this load release device 6 has horizontal bins 9, 9, 10, and 10 protruding from a support member 7 attached to the lower end of the support column 2.3 on all sides. A universal joint piece 8 is provided so as to be tiltable by means of its opposing bin 9.9, and a first lever 11 formed in a box shape on the other bin 10.10 is provided so as to be tiltable at a position near one end thereof. A second lever rod is attached to the shaft and formed in a box shape at one end of the lever rod 11! 2 is rotatably pivoted by a horizontal shaft 13 that crosses the levers 11 and 12.

Both lever rods 11 and 12 have screw holes 14a in the vertical direction located at positions that are longer distances from the bottle 10 to the other end than the distance from the bottle lO to the shaft rod 13, respectively.
The bridge member 14゜I5 screwed with 15a is the lever rod 11.12
The screw holes 14a and 15a have opposite helical directions. Then, the bridge members 14 and 15 of both lever rods 11 and I2 are placed at a required interval vertically,
A screw rod 17 having screws 17λ and 17b with opposite directions on both the upper and lower halves is screwed together, and the other ends of both lever rods 11.12 are inserted through the bridge member 14.15 by forward and reverse rotation of the screw rod 17. The parts move toward each other and move away from each other, so that both lever rods 11, 12 are tilted relative to each other in opposite directions about the shaft rod 13.

It will be subjected to the load of In this case, as shown,
A temporary seat 18.degree. 18 made of wood or the like is inserted between the lower surface of the second lever 12 and the floor on both sides of the bottle 9. and,
By rotating the threaded rod 17 in one direction and tilting the other ends of both lever rods 11.12 in the direction away from each other via the bridge member 14.15, the support member 7 is lifted via the pin 9.9. This means that the vertical position of the support column 2.3 can be adjusted and set.

In addition, each corner post 2 at the four corners is provided with a caster device 20.20 for moving the box frame l in the longitudinal direction of the construction structure, that is, in the longitudinal direction of the box frame 1, and a caster device 20, 20 for moving the box frame l to the construction structure. caster device 21.21 for adjusting and moving in the transverse direction of the box frame 1
is installed. These castor devices 20 and 21 have almost the same configuration, and as shown in the enlarged view in FIG. A cart 25 with wheels 26 and 26 provided at the lower end of a pedestal 24 is removably attached with bolts and nuts.

One castor device 20 is mounted on the corner post 2 via brackets 27, 27 in such a position that its wheels 26°26 roll in the longitudinal direction of the construction structure, and the other castor device 20 is mounted 2! is attached to the corner post 2 via the bracket 27.27 in such a position that its wheels 26.26 roll in the width direction of the constructed structure.

The traveling formwork support of the present invention is constructed as described above, with one castor device 20.
It is mounted on 20 wheels 26° 26 and is moved in the longitudinal direction of the construction structure. A slab formwork 29 is mounted on the vertical beam 5.5 of the box frame body 1, and side wall forms 30.30 are provided at both ends of the slab formwork 29, the tilting of which can be adjusted freely by expansion and contraction devices 31.31. Pivoted to 32, 32
In this way, a moving formwork device such as a culvert is constructed.

When moving the shoring of the present invention, as shown in FIGS. 3 and 7, the jacks 23 of one castor device 20 are extended,
The box frame body is removed via the corner posts 2.2, and the shoring structure on which the formwork is mounted is supported on the caster system 20.20, and the rail 28.
28 and move the shoring to the predetermined execution position. At that time, if the position of the formwork mounted on the shoring in the middle direction of the construction structure deviates from the predetermined position, as shown in FIGS. 4 and 8, the other castor device 2
1. A short rail 33.33 for lateral movement in a direction perpendicular to the rail 28 is provided below the rail 28, and the jack 23 of the caster device 21.21 is extended to move the wheels 26.26 to the rail 33.21. 33, and one castor device 20.
By retracting the jacks 23 of 20, the wheels 26.26 are raised above the rails 28.28, the shoring is supported by the other castor system 21.21, and the shoring is attached to the rails via the wheels 26.26. 33.33 to adjust the position of the shoring in the width direction of the constructed structure.

After determining the position of the shoring, that is, the formwork mounted on it, the height of the frame 1 is adjusted by operating the jacks 23 of the caster device 21, 21 to raise the slab formwork 29. Set at a predetermined height position and load release device 6. of each column 2.3.
Insert the dowel 18.18 under the dowel 6, rotate the screw rod 17 to press the second lever 12.12 against the dowel 18.18, and then retract the jacks 23 of each caster device 21 to tighten the wheels. 2
6. Raise 26. Each caster assembly 21 thereby rises above the rail 33.33 and each support column 2.3 of the shoring
are directly supported on the floor via the load release device 6 and the counter seats 18 and 18, respectively. In this state, concrete is poured, and the accompanying vertical load is shared by each support column 2.3.

After the poured concrete has hardened, the formwork 29.30 is peeled off and moved to the next construction site.To do this, the side wall formwork 30.30 is first retracted by the expansion device 31 and peeled off from the concrete. , then rotate the threaded rod 17 of the load release device 6 on each column 2.3, and remove the first lever 1.
1 as shown by the dotted line in Fig. 5, each column 2
．． 3 is lowered, the height of the frame 1 is lowered, and the slab formwork 29 is separated 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 17 to be rotated uses a lever, so that it can be easily operated.

After peeling off the formwork from the concrete, extend the jacks 23 of each caster device 20, place the wheels 26.26 on the rails 28.28, and attach the shoring and formwork to the caster device 20.20. While applying weight, remove the temporary seats 18.18 inserted under each support column 2.3, and reinstall the rails 28.28.
The top is moved toward the next concrete construction site. Construction continues by repeating the above steps.

9 and 10 show other embodiments of the load release device 6. FIG. In this embodiment, the load applied to the support column 2.3 is more excessive, or the distance from the pin 10 to the screw rod 17 is short, making it difficult to rotate the screw rod 17 to release the load. It is suitable when That is, in this embodiment, a vertically elongated guide hole 34 is formed as a pin hole for engaging the pin 16.16 of the bridge member 14 in the first lever 1, and the bridge member 14 is formed in the guide hole 34. 34
It is provided so that it can freely slide up and down along the . That is, the pins 16.16 of the bridge member I4 are given vertical play.

In the case of this embodiment, when a load is supported, the pin 16° 16 of the bridge member 14 is in contact with the upper end of the vertically long guide hole 34, 34 and receives the load, as shown in FIG. becomes. When releasing the load, as shown in FIG. Push up the other end in the direction of the arrow to remove screw rod 1.
Since a large load will not be applied to pin 7, rotate the screw rod 17 in this state and insert the pin 16.16 into the guide hole 34.
．． 34 so that it is located at the lower end. And Jyatsuki 35
If this is shortened, the support column 2.3 will be lowered by the amount of play in the guide holes 34.34 without any resistance from the threaded rod I7, and the load can be released. in this case,
Since the screw rod 17 is rotated without being subjected to a large load, it is extremely easy to rotate the screw rod 17.

(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 load release device is installed in which one of the levers of a pair of levers, one end of which is pivoted to the other and the other end of which is connected to each other so as to be freely accessible and detachable by means of a threaded rod, is provided on a horizontal opening so as to be tiltable; , Each corner pillar of the above-mentioned support is equipped with a caster device equipped with wheels that roll in the length direction of the construction structure and can be adjusted up and down, and wheels that roll in the width direction of the construction structure and can be adjusted up and down. Since it is configured to be equipped with a caster device that can be freely provided, it has the following excellent effects.

(1) A load release device is installed at the lower end of each column of the box frame body, and a caster device that can be raised and lowered is installed on the four corner columns, making it possible to move the shoring smoothly and to prevent concrete pouring. In some cases, the large load can be shared among each support column, making the overall weight of the support structure lighter.

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

(3) The large load that each support column receives from concrete pouring can be released by simply turning the screw rod for release using a load release device that uses a lever, greatly increasing work efficiency. You can improve.

(4) Equipped with a caster device that can run in the length direction and middle direction of the construction structure, and each caster device can be adjusted up and down, so it can be used not only to move the shoring, but also to perform construction work. It is easy to adjust the movement of the structure in the middle direction, so there is no need to perform accurate rail installation, and even if the rail installation is out of alignment, there is no need to correct it. Work associated with this can be done easily and efficiently.

(5) Switching operations between traveling movement, mid-direction adjustment, and concrete pouring can be easily performed.

[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 side view of the main part showing the state during traveling, and Fig. 4 shows the state when adjusting the width direction. 5 is an enlarged front view showing the load release device, FIG. 6 is a perspective view showing the same parts separated, FIG. 7 is an enlarged side view showing the caster device, and FIG. 8 9 is an enlarged side view showing the state when moving in the same width direction, and FIG. 9 is a front view showing another embodiment of the load release device.
The figure is a perspective view of the first lever, and FIG. 11 is a front view showing the state when the load is released. l...Box frame body 2...Corner pillar 3...Middle pillar 7...Supporting member 9.10...Pin I3...Shaft rod 16...Bin 18...Template 22. ... Leg tube 24 ... Pillar 26 ... Wheel 34 ... Guide hole 6 ... Load release device 8 ... Universal joint piece 11.12 ... Lever rod 14.15 ... Bridge member 17... Screw rod 20.21... Caster device 23... Jacket 25... Carriage 28.33... Rail 35... Jacket $6 Figure 7: $8 Figure 6 3 8 6 6

Claims (1)

[Claims] A rectangular box frame is formed by connecting columns arranged vertically and horizontally with horizontal frame members, one end of which is pivoted to the lower end of each of the above-mentioned columns, and the other end can be freely attached to and detached from it using a threaded rod. A load release device is installed in which one of the levers of a pair of levers connected to the pillar can be tilted freely around a horizontal axis, and each corner pillar of the above-mentioned pillars is equipped with a load release device that extends in the length direction of the construction structure. A traveling type, characterized by being equipped with a caster device having rolling wheels that can be freely adjusted up and down, and a caster device having wheels that roll in the width direction of the construction structure that can be adjusted up and down. Frame shoring.