JPH0410548B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tiltable formwork apparatus for casting walls in a horizontal position and for tilting the walls into a vertical upright position.

PRIOR ART AND PROBLEM TO BE SOLVED BY THE INVENTION Concrete wall construction is typically carried out at the building site by mounting vertical wall panels at the locations where the wall units are to be ultimately positioned. This technique is very time consuming and places severe demands on the stability of the formwork, as the plate form is easily pushed outward by the injection pressure at the lower end of the wall unit. This formwork must thus be reinforced by closely spaced planks. Otherwise, heavy-duty steel formwork must be used that must be handled using a crane or similar lifting device. Strong demands are also made on the watertightness of the formwork in both horizontal and vertical directions. Usually, very slight changes in the profile of the formwork will require expensive post-processing by grinding and/or filling.

One way to solve these problems is usually to
This is called the tilt-up method.
This method is one in which the casting of the wall is carried out in a horizontal position, after which the wall or walls are lifted together with the formwork to a predetermined vertical position. This technique is advantageous in that problems associated with pouring pressure (injection pressure) and vertical formwork seams are resolved. Furthermore, the casting operation is generally easier since the casting is accomplished in the same manner as for horizontal floor structures. This means that there is no need to push concrete between two closely spaced wall-frame members having a considerable height. When vertical formwork with such a large height is used, it is difficult to obtain an acceptable wall surface due to the formation of depressions due to air or due to non-adhesion of crushed stone.

Also, when pouring is carried out in the winter, one advantage that is unique to horizontal pouring is clearly obtained. The horizontal frame is easy to enclose,
Heating can be done from below.

The tilt-up method that has been used up until now involves either lifting the cast wall horizontally into position using a mechanical lifting device after the formwork has been removed, or placing the cast wall in a vertical position without removing the formwork. Including being tilted to. The latter method is preferred since it does not require the use of specialized lifting equipment in the form of a crane or similar. This wall positioning can be achieved directly by the formwork, independently of other mechanical aids. Devices for tilting horizontal formwork from a horizontal position to a vertical position are described, for example, in US Pat.
No. 1668300, German Patent No. 828588 and Swedish Patent No. 103951.

SUMMARY OF THE INVENTION Broadly speaking, the present invention, in light of the prior art techniques described above, provides a novel tiltable mold table for pouring and raising concrete. In particular, it relates to a formwork device equipped with upper and lower form-defining members for casting walls in a horizontal position and for tilting the resulting wall into a raised vertical position.

According to the invention, the device comprises a tilting device mountable on a support structure, the tilting device including a drive motor and a curved support leg;
In addition to the tilting device, the device further includes a threaded rod that is rotated by a drive motor, a sliding rail that runs along the threaded rod, and a nut that is threadedly engaged with the threaded rod. and a mounting that moves along a sliding rail, the support leg comprising:
Upper and lower formwork-defining members are to be formed, pivotally connected at their ends to the fixture and the formwork, respectively, so that the formwork can be tilted between horizontal and vertical positions. It is characterized by being able to adjust its position in a direction that allows the height of the wall to be changed.

Examples of the present invention will be described below.

Embodiment A tilting device 1 for tilting a formwork, which is generally designated by the reference numeral 2 in FIGS. 1 to 3, between a horizontal position (FIG. 1) and a vertical position (FIG. 2). It is shown. This tilting device consists of a geared synchronous motor 3 having a threaded rod 4 which is rotatably mounted and driven by the motor, and a formwork support beam 6 disposed approximately in the center, which is pivoted at one end. A nut 8 is movably connected and screwed onto the threaded rod 4.
It was pivotally connected at the other end to a fixture 7 having a. It consists of curved support legs 5. The fixture 7 is slidably mounted on a slide rail 10 extending below the formwork 2 by roller bearings 9 between its opposite ends 11 and 12, which are the limits of support for the support legs 5.

The tilting device 1 is arranged at a point 11 where the connecting portion of the support leg 5 on the floor structure 13 gives the formwork 2 a vertical posture.
The motor 3 is connected to the threaded rod 4 by mounting the motor 3 by bolts (not shown) on the floor structure 13 or similar support structure in such a position as to allow it to be moved to the floor structure 13 or similar support structure. . sliding rail 1
0 is also mounted and fixed on the floor structure 13 by bolts.

As can be seen from FIGS. 4 to 6, a working platform 14 is arranged adjacent to the lower formwork defining element 15 attached to the formwork 2. The work platform 14 has a support beam 16 and
It includes a rail (i.e., handrail) 17 capable of protecting workers on the platform 14 from falling downward, and a lower formwork defining member 15. The support beam 16 is adapted to be able to be pushed under the formwork 2 over its entire length. The columns 18 of the rails 17 and the columns 19 of the members 15 are arranged so that the support beams 1 can be folded into a horizontal position and retracted together with the support beams 16 under the formwork 2.
6 or mounted within a yoke (not shown) for easy removal from formwork 2 by hand. Similarly, a working platform 20 is attached to the formwork 2 and arranged on the upper formwork defining member 21 , the working platform 20 comprises two rectangular flat bars 22 , a rail 23 and the upper formwork defining member 21 . Contains.
a rectangular tubular member 2 through which two flat bars 22 extend parallel to each other from a rail (i.e. handrail) 23 to a formwork defining member 21;
4 and on the two flat rods 22, the member 25 is disposed below the lower flange 26 of the formwork-defining member 21 and the rectangular tubular member 24 and is attached to the lower part of the formwork-defining member. The flat bars 23 are fixed to the formwork 2 by U-shaped profiled members 25 which fasten the two flat bars 22 both to rubber spacers with a thickness corresponding to the height of the vertical flanges. ing. extending through the U-shaped profile member 25;
The tightening operation is performed by a bolt 28 having a nut that is tightened against the lower surface of the support beam 6. The connection of the flat rods 22 to the upper form-defining element 21 is effected by the flat rods 22 pressing laterally against the vertical webs 29 of the upper form-defining element 21. Such a connection relationship makes it possible to avoid problems such as the connection member protruding from the wall molding surface of the formwork 2, and it is possible to obtain a wall that is a molded product with a good surface. Thus, the flat bar 22 is
Since it can be moved towards or away from the formwork 2, the height of the wall to be cast can be adjusted by means of the upper formwork-defining member 21. The posts 30 of the rails 23 are placed between the bars 22 and secured with through bolts (not shown).

Vertical rectangular tubes 31 are arranged on both sides of the formwork 2, and a circular tube 32 is rotatably mounted at the upper end of the rectangular tube. In tube 32,
A protective waterproof cloth 33 is wrapped, and in case of bad weather or in winter when heating is required, the protective cloth 33 can be spread out to cover the formwork 2 while allowing work space.

The invention is applied as follows.

Support points 34 of the formwork 2 are set with respect to the inner side of the wall to be erected. Thereafter, the formwork 2 is leveled by the supports 35 on the marked points. In order to make it possible to set the formwork 2 in a horizontal position as precisely as possible, telescoping legs 36 are utilized along the two sides of the formwork, which can be adjusted vertically in a screw-like manner. The length of the formwork 2 is adjusted to the length of the wall by interconnecting two or more formwork modules. Therefore, in principle, there is no limit to the length of the wall. After the formwork is leveled, lower formwork defining member 1
5 are mounted and, if necessary, recesses for doors, windows, ventilation ducts, etc. are provided. The upper formwork defining member 21 is adjustable to various wall heights and typically remains in place during each casting.

The core frame is designed in such a way that the bottom 37 of the formwork 2 is not affected. Reinforcement may therefore be used. The element to be embedded can be mounted and fixed in the same way as a core frame, with the aid of a frame, reinforcement or by using a core frame. Two pivotable hooks 38 at the bottom of the mold bottom 37 are positioned within the mold during the casting operation. The purpose of these hooks 38 is to hold the wall unit (not shown) in position within the formwork 2 when the lower formwork defining member 15 is moved in connection with wall installation. be. As soon as the wall unit is installed in place, the hook 38
The wall unit is to be pulled out and the formwork 2 is to be returned to a horizontal position.

If the wall is an external wall, the reinforcement and casting are carried out first, and then the insulation is applied with an additional reinforcing layer before the outer surface is poured.
During pouring, fluid concrete is preferably utilized which is pumped into position.
Thereafter, the outer surface can be suitably lathed with a vibratory saw. If a textured outer surface is desired, this may be easily achieved by pressing the surface of the formed material immediately after casting.

The above method allows two workers to cast and erect a conventional basement exterior wall or exterior facade wall in one day. This is accomplished by lifting the mold the previous day in the morning, then cleaning the mold and moving it to a new casting position. In the afternoon, new casting operations will take place.

Only after the lower support leg 36 has been retracted and the lower formwork delimiting member 15 has been removed can the formwork be tilted into a vertical position. Thereafter, the strip of cement mortar to which the wall is to be mounted is laid down.

When tilting the formwork 2 into the vertical position, the tilting device 1 is moved underneath the formwork 2. The motor 3 is bolted to the floor structure 13 as described above together with the associated sliding rail 10. A support leg 5 pivotally connected to the sliding rail 10 is pivotally attached to the formwork 2 at the formwork support beam 6 located approximately at the center of the formwork at its other end as described above. Ru.

The motor 3 is then started, causing the screw rod 4 to rotate and thus the nut 8 on the fitting 7 to be moved towards the motor 3. Due to the sled, the fixture 7 mounted in the roller bearing starts sliding in the slide rail 10, and the formwork 2 is pushed upward by the angled (curved) support leg 5. . When the formwork 2 is in the vertical position, the support leg 5 has slid to a limit position adjacent to the point 11 of the support or to the motor which limits this sliding movement. At the same time, the bottom 37 of the formwork 2
and the supporting legs 5 prevent the formwork 2 from overturning.

When returning the formwork 2 to the horizontal position, the motor 3 is operated so that the threaded rod 4 rotates in the opposite direction to the previous direction.
The support leg 5 then returns to its limit position, ie its initial position adjacent to the point 12 of the support.

Bolt fittings 40 fixing the wall unit to the formwork 2 after the formwork 2 has assumed the intended vertical position.
two pivotable hooks 38 which allow the wall unit to be removed and prevent this wall unit from sliding out of the formwork.
is retracted and then the formwork is removed. Temporary braces may then be mounted on the inside, making it possible to precisely adjust the vertical position of the wall.
These supports are used while the wall unit is erected.
It can be fixed in a stud nut 41 which is used as a fitting for fixing the formwork 2 to this wall unit. If the wall is so long that it is cast in several formworks 2 connected to one another, these formwork modules are removed one by one and gradually replaced by supports. Thereafter, the formwork 2 is moved to a new pouring position using the mounted wheels. This movement can be done manually.

The wall unit is finally adjusted, excess "burrs" are removed and the recesses are filled as required. After the wall unit is installed and secured in place, the corner joints are cast.
If necessary, interconnection of the units is achieved by means of angle fittings or the like. However, horizontal loads acting on vertical walls are usually borne by the floor structure.

The present invention provides a highly effective and inexpensive method for fabricating vertical walls in a horizontal position. The positioning of the support legs 5 allows the formwork 2 to be lifted or tilted upwards without any risk of overturning, using only very simple and inexpensive mechanical assistance. By that,
Significant costs associated with the use of various mechanical equipment such as cranes or hydraulic equipment on the formwork are saved. The formwork is equipped with wheels so that it can be easily moved by hand to the floor structure or other support structure where it is to be used.

The present invention can be applied to a very wide range of fields, such as external facade walls, basement walls and residential buildings, office buildings,
Can be applied to interior walls for industrial and government buildings.

[Brief explanation of drawings]

FIG. 1 shows a tiltable formwork in a horizontal position for casting walls from one end. FIG. 2 is a projection view corresponding to FIG. 1, showing the formwork when it is tilted into a vertical position for raising the wall cast into the formwork. FIG. 3 is a sectional view taken along the - line in FIG. 1. FIG. 4 shows the formwork of FIG. 1 from above with a processing platform placed along its side. FIG. 5 is a sectional view taken along the - line in FIG. 4. Figure 6 is a sectional view taken along the - line in Figure 4;
It also shows the canopy over the formwork. 7th
Figure 8 is the - line in Figure 6, respectively.
- FIG. DESCRIPTION OF SYMBOLS 1... Tilt device, 2... Formwork, 3... Drive motor, 4... Threaded rod, 5... Support leg, 7... Fixture, 10... Sliding rail, 13... Support structure,
15... Lower formwork defining member, 21... Upper formwork defining member.

Claims (1)

Claims: 1. A formwork 2 comprising upper and lower form-defining members 21, 15, by means of which a wall can be cast in a horizontal position and in a raised vertical position. The apparatus having the formwork capable of tilting and erecting a wall includes a tilting device 1 that can be mounted on a support structure 13, and the tilting device includes a drive motor 3 and a curved support leg 5. In addition to the tilting device, the tilting device further includes a threaded rod 4 rotated by a drive motor 3, a sliding rail along the threaded rod, and a nut 8 screwed onto the threaded rod. a threaded rod and a fixture 7 moving along the slide rail 10, said supporting legs 5 each having a threaded rod at each end thereof so that the formwork can be tilted between a horizontal position and a vertical position. Upper and lower form-defining members 21, 15 are pivotally connected to the fixture 7 and the formwork;
1. A tilting formwork device for pouring and molding a wall, characterized in that the position is adjustable in a direction that can change the height of the wall to be molded. 2. The drive motor is a geared synchronous motor 3 having the threaded rod 4, and the fixture 7 is attached to the support leg 5 below the formwork 2
A tilting system for casting a wall according to claim 1, which is slidably mounted in a slide rail 10 extending between its ends 11, 12, which is the support limit for a wall. Formwork equipment. 3. A lower formwork-defining member 15 is pivotally connected to a rod 16 which can be retracted into a position below the formwork 2 and which protects the working platform 14 and the workers on it. A tilting formwork device for casting walls according to claim 1 or 2, characterized in that it serves as a filler material for a protectable rail (17). 4 Upper and lower formwork defining members 21, 15
are connected to working platforms 20, 14 mounted on the frame of the formwork 2, and the connection is such that an engagement relationship does not occur on the wall molding surface of the formwork 2. A tilting formwork device for casting and molding a wall according to any one of claims 1 to 3. 5. The upper formwork defining member 21 is displaceably connected to a connecting member 22 connected to the working platform 20.
A tilting formwork device for casting and molding the wall described in any one of Items 1 to 4. 6 Vertical pipes 31 are provided on both sides of the formwork 2, and the vertical pipes 31 are mounted in a yoke and rotatably connected to a horizontal pipe 32 at the upper end thereof, and have a cover that can be pulled out. Claim 1, characterized in that the is connected to the horizontal pipe 32.
A tilting formwork device for casting and molding the wall described in any one of Items 1 to 5. 7. The formwork 2 is provided with at least one pivotable hook 38, which hook is used for injection molding when the formwork is in a vertical position and the lower formwork defining member 15 is removed. For casting a wall according to any one of claims 1 to 6, which is a member for holding the wall unit in the formwork 2 until the wall unit occupies the correct position. tilting formwork equipment.