JPS59133008A - Facility for manufacturing concrete material through slidingmolding - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to equipment for producing concrete material by sliding forming, and the concrete material is made of PC by pre-tensioning method.
It is made of concrete, and the equipment will be relocated to the construction site.
The main feature is that the trench can be easily dismantled.

The present inventor has developed a new method for sliding concrete slabs, in which the upper mold is placed on rails on both edges of the R-shaped long lower mold, and the hardened concrete on the lower mold is formed by sliding the upper mold by winch traction. I am the developer of the molding method. Equipment and devices for this sliding molding method have been developed and applied for successively since Utility Model No. 1067941, and practical products have already been produced.

However, the equipment still relies on manual labor in many auxiliary work processes, especially the work of pre-arranging several to ten or more PC steel wires on a long lower mold of around 100'rrL.
It required manpower to evenly spread the hardened concrete on top of the lower mold.

This invention solves the above problems and promotes comprehensive mechanization of the entire process, and at the same time, the above-mentioned equipment, which has been developed as a stationary equipment for Haragai IJ, is relocated to the construction site as mentioned above. In particular, it is revolutionary to make pre-tension equipment relocatable, which is characterized by its ability to be easily installed and dismantled as a temporary factory.

There are two methods for applying prestress to concrete members: the post tension method and the pretension method. In the former case, after the concrete has hardened, prestressed steel wires are passed through through holes provided at key points, grout is press-fitted, and the ends are fixed to the outside surface by tensioning the steel wires. The latter involves tensioning the PC steel wire on a sturdy pre-tension bench and pouring concrete on top of it.
The entire length of the steel wire is fixed to the concrete under tension.

If the construction site and the PC concrete parts manufacturing factory are far apart, transportation costs would be huge, so a temporary factory will be built near the site. At that time, a simple boss tension method using Schete equipment was used. Pretension method is usually 6o~1
It would require a long, sturdy bench measuring 20 to 7 liters and related equipment, and due to the land and construction costs, it would not be possible to simply build a temporary factory. Therefore, as a method for manufacturing PC concrete materials, the pre-tension method is superior to the post-tension method in terms of complete adhesion of the PC steel wire and concrete, simplicity of the work process, and applicability to thin-walled products. X
However, the pretension method has continued to this day without any significant development.

Now, the configuration and embodiments of this invention will be explained with reference to the drawings.

Figures 1 to 5 show one embodiment of this invention, and its main parts include a pre-tension bench ffjJ10 which connects a number of concrete unit lower molds and steel wire tensioning tables at the front and rear ends. It rests on the rails on both edges of this lower fi10,
The upper mold slides and forms the concrete on the lower mold lO by winch traction//X The PC steel wire 13 is sent,
Steel wire gutter 3α that allows its own weight to escape from the side opening onto the lower mold 10
, a packet 7 with a vibrator that drops concrete evenly, a steam supply device for curing, and a machine that runs vertically and horizontally over the lower mold 10 and the product storage space r along the lower mold. Get a crane? α,? b etc.

When relocating equipment, cranes Pa and Wb are used to remove each piece of equipment, parts, etc. The unit lower mold/, steel wire tensioning stand, upper mold/1, etc. are transported as is or disassembled from the transportation vehicle to the required location, or vice versa, and the product is transported. Lower mold 10
It is now possible to transfer the product from above to the product storage area r1 and to the product transport vehicle that came to that storage area. Therefore, by first assembling/preparing the cranes Pa and Wb and transporting the above-mentioned parts using a transport vehicle, construction can be carried out one after another, and there is no need to prepare a construction crane. Crane operators α and zb then work for production purposes.

The pretension bench, which previously would have been unthinkable to relocate, was made movable because it was divided into parts and made into an assembly type. In particular, the lower mold 10 of this invention
is made of Conc IJ-1-, and since it itself doubles as a pre-tension bench, transporting it in parts has been significantly simplified. Figure 4 shows the dual-purpose lower die 10 and the steel wire tensioning tables at both ends of it.
Fig. 5 shows a cross section of the state in which hardened concrete is spread on the lower mold io and a corrugated concrete plate C is being formed on the sliding upper mold /l.

Two sets of the lower mold io and the upper mold // are installed side by side in the shed 16.

Each unit lower mold 1 is placed on three long vertical bases and is joined together, and both tensioning stands at both ends are tightened through steel rods (not shown), and the PC steel wire 13 is tightened by the tensioning stands. is time,
The lower mold/θ is prevented from curving.

There are rails on both edges of the unit lower mold l, as can be clearly seen in Figure 5.
The upper mold 10 serves as a rail for the entire length of the lower mold 10, on which the upper mold 1/1 slides. In addition, the unit lower mold / passes through the steam hole≠α in the vertical direction, and by connecting one after another through the backing, a steam curing hole of the entire length of the lower mold 10 is formed, and the steam supply device (
boiler) ≠. This embodiment collects drain or return water into a tank to obtain improved thermal efficiency.

The sliding upper mold // was also developed by the present inventor, and maintains a gap between the upper surface of the lower mold 10 to form the product C, and the vibrator /! The upper part is vibrated by the winch! The machine operates to tow and move the wire rope stretched in the forward direction. The winchiter may not be placed on the upper mold l/, but may be fixed on the site and the upper mold // may be towed.

Figure 6: Shed/C-shaped gutter 3 for steel wire supply on pillar/7 on one side of shed
α is attached. This is equipment for passing the PC steel wire between the steel wire tensioning tables at both ends of the lower mold 10, and
At the end of 6, there is a PC steel wire feeding device 3 as shown in FIG.

The wound PC steel wire is placed on the rotary table /r, and the steel wire /3 is sent to the gutter 3α by the feeding device /2. When the tip of the wire hits the fixed length detector at the tip of the gutter 3α, the feeding device stops and the wire is cut. device 20
works to cut the steel wire/3 to a fixed length.

Then, when one end of the wire is hung outside from the side opening of the gutter 3α with a C-shaped cross section, the steel wires /3 escape from the gutter 3α one after another due to their own weight, and the inclined rods attached to each column /7 are suspended. It slides and settles on the required position on the upper surface of the lower mold 10.

After holding both ends of each PC steel wire/3 with the tensioning devices and tensioning them with the hydraulic jacks, it is time to lay the concrete. The concrete supply device 6 may be a batcher plant or a hot spring that temporarily receives fresh concrete.

As shown in Figure 1.2, fill the hole 7 below with hardened concrete. /; The Kerato 7 closes its lower lid, runs on a separately provided rail and reaches the rail/Hirokami of the lower mold 10, then opens the lower lid and moves the attached vibrator 7α over the lower mold 10 at the required speed. Run υ and drop the concrete evenly.

In this example, the packet 7 runs on a cart and also has the function of leveling dropped concrete.

The transport packet 7 may be moved by a laner α that runs overhead, or by a car that runs along the lower mold/θ.

Have you finished laying concrete along the entire length of the lower mold 10?
Or, before that, start moving the sliding upper mold/, 1 forward. In addition, steam supply from the boiler Hiro to the lower mold steam hole≠σ will begin. After molding, instead of curing, concrete is laid on the lower mold 10 and the concrete is immediately applied with zero force to speed up the hardening.

When the sliding upper mold/l moves from one end of the lower mold 10 to the other and the product is molded on the upper surface of the lower mold 10, a sheet is placed over it to prevent the heat from the steam vent hole α from moving upwards. So,
When the temperature reaches the appropriate temperature, turn off the steam and leave it for a few hours, and the product will be hard enough to take out. Generally, it is sufficient to allow the curing period to last from the end of work in the evening until the start of work the next morning.

Since the lower mold 10 is usually around 100 feet long, a partition material is placed in advance on the upper surface of the lower mold 10 so that the product can be divided into required lengths and taken out. The products will be picked up by two cars in the overhead running lane 5i'σ shown in Figure 1.2.

Long products can be lifted by connecting two units or by operating them together wirelessly. As shown in Fig. 6, the trolley duct for feeding power to the crane α can be easily attached to the pillar. Lifted product C
are placed on connecting trolleys 23 installed at four locations from the lower door 1 of the shed to the product storage area g, and placed on either outdoor crane on either side. Give it to b.

Two outdoor cranes B also work together to organize and place the products in storage area R, and then load them into a car when they are to be taken out. The upper mold // can be returned to the starting point by the overhead running lane 7α, or by reversing the rail l hirojo.

The above is the process during operation, but the process of relocating this equipment to a construction site in the mountains, for example (including the case where a new factory is created by manufacturing new parts at the main factory) will be described next.

Figure 5 shows shed 16, pillar 17, which was disassembled and sent to the construction site.
After assembling the crane Par yb, the transport vehicle 675 arrives under the outdoor crane 9b, lowers the unit lower molds, and arranges them in two rows at the required positions under the shed 6. This is what is shown. Since the base/2 of the lower mold IO is simple, it is better to make it at the desired location on site rather than transporting it.

When the car arrived, there was a crane? By b, all the luggage is unloaded to product storage area r. Then, the unit lower molds 1 are delivered one after another by the crane b1, the connecting trolley, 13, and the crane machine α, and are arranged on the base 11 to perform the assembly work concurrently. Lower mold 1
After assembling 0, install steel wire tension stand units at both ends, fasten them to anchor bolts, and tighten and secure the entire length of the lower die 10 with PC steel wire.

Sliding upper mold//Although it is simply depicted in the diagram, the hardened concrete on the lower mold is first leveled, roughly formed, completely formed, and disassembled into parts for surface finishing, and then sent. Assemble on site and place on the lower mold/θ rail.

At the same time, install the PC steel wire supply device 3 and its gutter 3α, and also install piping to the steam supply device≠ and lower mold steam hole≠α, and also prepare the concrete supply device 6 and packet 7.
The equipment is completed.

The above embodiment is a facility with a prefabricated shed/6 as shown in Fig. 6, which allows work to be done in the rain, and is equipped with an overhead crane rail and a power supply trolley duct JX PC steel wire supply gutter 3α on the pillar/7 of the shed. This is advantageous in terms of installation, and a sheet can be used as the roof covering for a temporary factory, but two simpler embodiments are shown in Fig. 7.8.

Figure 7 shows an example where there is no shed and the equipment is the simplest. Of course, the supply equipment for PC steel wire, steam, and concrete are the same as before. What's different is that there are no pillars on the roof, so there is no lane for overhead running, and it's an outdoor crane like before. b also serves as a crane 7α above the lower mold 10, and since there is no pillar, the PC steel wire supply gutter 3a and the power supply trolley duct are attached to the side of the lower mold 10. A temporary pillar may be attached with supporting legs.

What is the advantage of this example? b can work vertically and horizontally from above the lower mold 10 to the product storage area ♂, which facilitates transportation work both during relocation and during operation. crane? If b is used as a truck crane instead of a gate type crane, the equipment will be further simplified.

The lower mold io in FIG. 7 is for a product C' having a flat bottom surface, and shows a situation in which the finished product C' is loaded on a storage area and sequentially loaded onto a product transport vehicle-7.

Also, on the right side of the figure is a truck transporting concrete packet 7.
This figure shows a method in which the concrete is loaded stably, the concrete is transported one after another from a nearby existing ready-mixed concrete factory, the concrete packet 7 is immediately lifted onto the crane machine b, and the concrete is dropped onto the lower mold 10.

In the embodiment shown in FIG. 8, the pillars 17 of the shed/6 are arranged in only one row in the center, so that the outdoor crane 2b can work under the roof, and the power supply trolley duct is connected to the pillar/7. 2≠ and steel wire gutter 38 can now be installed. Also,
In this example, the packet transport vehicle 2 is run along the lower mold IO, and the fresh concrete that has been carried is poured from the side. In addition, the truck crane kota is used to unload large parts and stacked products during relocation, so that the crane b can be kept small.

The concrete dropped onto the lower mold 10 will pile up evenly in the longitudinal direction, but if a scraper is added before the upper mold 10, there will be no problem.

As described above with reference to a small number of embodiments, the present invention uses a lower mold that also serves as an assembly type pretension bench, and is equipped with a PC steel wire gutter, an equipment for forming concrete by sliding an upper mold,
The PC concrete plate manufacturing equipment is suitable for relocation and includes steam, concrete supply equipment, uniform drop packets, and a crane. Diverse changes,
Applications can be made. Concrete material is concrete version,
It can be applied to objects with various cross-sectional shapes, such as beams.

This invention overturns the conventional wisdom that PC concrete materials made at construction sites were limited to the boss tension method. The dog-like pretension bench is split and assembled so that it can be moved in length or length, and since the bench also serves as the lower mold for molding, the number of steps required for disassembling, transporting, and assembling has been halved. In addition, since a crane is installed that runs horizontally and vertically over the lower mold and over the product storage area along the lower mold, by assembling this on-site first, the operating crane can also be used for equipment relocation and assembly.
There is no longer a need to transport construction cranes to construction sites in remote areas.

Moreover, the manufacturing equipment uses a sliding molding method that moves a sliding upper mold onto a long connected lower mold, and uses hardened concrete.
Since steam heating can be started at the same time as concrete is laid, the molding speed of conventional PC concrete materials has been increased several times.

This will contribute to shortening the overall construction period.

In addition, the PC steel wire installation work, which is a time-consuming work, and the CONC'J
- We have adopted a steel wire gutter that feeds the required length of steel wire and then lets it escape under its own weight through a side opening and drops it onto the lower mold, and a packet that drops the concrete evenly by vibration as it progresses. Yoshi could be mechanized.

Furthermore, in terms of management, the large amount of transportation costs to the site that were unavoidable with conventional pre-tensioning products is eliminated, and unlike conventional pre-tensioning equipment, the equipment does not have to be able to respond to every order, but instead operates at full capacity with the minimum necessary. , it can be manufactured on a scale that achieves high efficiency, the equipment can be expanded at any time if necessary (extension and expansion of the bench/lower mold), and the manufacturing equipment is close to the construction site, so the construction schedule can be adjusted to include the PC concrete membrane manufacturing schedule and the product. Quality and specifications are closely discussed, and product stock is small.
It also has many advantages, such as being able to exchange workers and making it easy to transition from a temporary factory to a full-scale factory.

This invention has made it possible for the first time to relocate PC concrete manufacturing equipment using the pre-tension method, which is superior to the post-tension method in terms of quality and productivity. The effect of being able to pre-tension and supply thin concrete slabs that are not suitable for the tension method on-site is extremely large.

[Brief explanation of drawings]

Figure 1.2 is a plan and elevation view of one embodiment of this invention, Figure 5
The figure is an enlarged side view, Figure 4 is an explanatory diagram of an embodiment of the lower mold/pretension bench, and Figure 5 shows the lower mold and the upper mold that is sliding over it to form concrete. Partial sectional view, Figure 6 is an explanatory diagram of the PC steel wire supply device, Figure 7.8
The figures are side views of two other embodiments. 3α...PC steel wire gutter, ≠...Curing steam supply device,
7... Concrete packet, Ri α, Ri b... Crane, IO... Lower mold that also serves as pretension bench, //
...Sliding type.

Claims (1)

[Claims] A lower mold that also serves as a pretension bench, which connects a large number of unit lower molds made of concrete with steel wire tension stands at the front and rear ends, and a concrete lower mold on the lower molds that moves on rails on both edges of the lower mold. An upper mold for sliding forming, a steel wire gutter that supplies the PC steel wire onto the lower mold, a packet with a vibrator that runs over the lower mold and evenly drops concrete, and a curing steam supply device. , equipped with a crane that can run vertically and horizontally over the product storage area above and along the lower mold, and all of the above equipment and components can be carried in and out by the crane either as they are or disassembled. Concrete manufacturing equipment using sliding forming, which is characterized by: