JPS606410A - Molding device - 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 Field of the Invention The present invention relates to a device forming at least part of a slow-closing means for making concrete products expandable by controlled expansion.

This apparatus ξ can be used to make either pure concrete products or reinforced concrete products, and these products may or may not be prestressed.

This device is capable of producing concrete products by molding without any shape limitations, even if these products are solid or have - or more hollow parts, straight products, circular products, etc. It can be enclosed within a slow-closing means to obtain columnar products and the like.

BACKGROUND OF THE INVENTION [0003] Means for molding concrete with low cost, small amounts of material, improved quality and short manufacturing time are known.

Arrangements of the Invention The apparatus of the present invention is capable of compacting concrete poured into any type and size of suitable slow-closing means by a predetermined and controlled displacement of one or more planes.

The apparatus of the invention comprises a movable surface forming part or all of a surface located on the inside or outside of the product being manufactured.

The method of the present invention can also produce very thin concrete of 301 Fl or less.

As mentioned above, according to the present invention, products with any cross section can be made, such as rectangular, circular, L-shaped, linear, etc.
It is possible to obtain a cross-sectional shape such as a curved shape, which has a substantial content, or one containing - or more hollow parts.

The apparatus of the present invention can be easily operated during either filling or withdrawal operations and is operated by a single operator.

The following description will be directed to the device which acts as the inner element of the slow-closing means, i.e. the device which applies pressure from the inside to the outside on the concrete I product.

Therefore, the product produced by t) should contain 1 (11,1 or more hollow parts).

However, it is also within the scope of the invention to embody this device in a device suitable for use as an outer slow-closing element or as part of an inner and outer slow-closing element.

Furthermore, the present invention can be implemented as part of a slow closing means that can produce a complete product without hollow parts.

According to the device of the present invention, uniformly controlled expansion can be obtained by various types and means, such as one or m
The apparatus also falls within the scope of the present invention.

In the following explanation, the slow-closing means (in the case of the following explanation, the outer slow-closing means) on the side opposite to the device that performs expansion by water pressure is used to connect the inside and outside to i! I! Preferably, it has a continuous perforated structure and is lined on the inside to allow water to pass through, but to retain other materials, including binders, contained in the concrete.

Don't explain.

The opposing slow-closing means (in this case the outer slow-closing means) therefore has the desired shape and its surface in contact with the concrete is made of a material that is permeable to water and air but not to binders, etc. It has a lined perforated steel plate.

The water and air contained in the poured concrete flow freely through the shortest path, ensuring a perfect residual moisture distribution throughout the product.

This uniform moisture corresponds to uniform compactness and therefore high dimensional stability in all points of the product! 1. lF
Security against certain requirements is guaranteed.

When the device expandable by controlled expansion of the present invention is placed in a product to be manufactured, it is placed inside the slow-closing means and between the inner and outer elements of the slow-closing means. A suitable hollow space is left.

This expandable device was historically used as an element for shielding the mechanical parts installed inside it from water and for distributing the IL power. 1 as an elastic element for
1 (impermeable 1 made of elastic abrasive material to fulfill the purpose of
・It has one cover on its outer circumferential surface.

Various expandable elements that cooperate with the cover are carried inside the impermeable cover made of the elastic material.]1
It is built in along with '¥zo.

These expandable elements can be expanded by expansion of the tube element by injection of pressurized fluid or by the action of launches, wedges, cams, jacks, etc.

The invention is therefore embodied by a device suitable for carrying out the method of molding concrete expandable by controlled expansion, which device can process pure or reinforced concrete; It also comprises means for an impermeable resilient cover cooperating with at least one movable element, characterized in that the device includes at least one expandable element between the carrier structure and the movable element. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. For ease of explanation, a device that operates within the hollow space inside the concrete product will be described.

In the figure, reference numeral 10 designates an expandable device, the expansion of which takes place along its entire circumference, which also includes the possibility of the device as part of an inner shut-off element slow-closing element for producing concrete products. ing.

In the illustrated example, the device 10 has an impermeable elastic cup that encloses the device IO over its entire circumference in contact with the body of concrete to be poured.

This cover 11 is used to shut off the internal mechanism of the device 10 (
If the device 10 is capable of performing this function, it fulfills its respective functions as an elastic element for return and as an element for equalizing thrust pressure.

A support structure 12 is provided within the impermeable resilient cup 11 and is used to support, guide and position the elements of the device of the invention.

This support structure 12 is made of iJ dynamic concrete members 1~ made in various shapes to suit the shape of the concrete product to be manufactured.
Collaborate with 13 and 113.

According to the example of FIG. 1, the structure 12 and the movable element 13 each have guides 15 and 115, each guide cooperating with the other and being suitable for a guided and controlled translational movement.

These guides 15, 115 are shown better in FIG.
Plate 213 used as an intermediate means opposite to 1
have.

The movable element 13 also has a guide 1sc' of the carrier structure 12.
- with a protrusion 121 cooperating with the protrusion 21 provided;

In this way, the movable element 13 can move, but its maximum displacement is controlled to prevent excessive outward movement.

In this example, an expandable element 14 is provided to cooperate with movable elements 13, 113. This element 14 consists of a tube element into which pressurized fluid can be injected.

FIG. 1 shows the tube element 14 in a flattened state, while in FIG. 2 the tube element 14 is expanded by the action of pressurized fluid.

When the tube element 14 expands, Niremen [3,1
13 is forced into displacement, and this displacement is transmitted to the impermeable elastic cover 11, which is transmitted in the form of a uniformly distributed pressure over the poured concrete body.

Figure 4 shows the application to the production of cylindrical concrete pipes. These cylindrical pipes may or may not contain reinforcement. It may also be of a prestressed type or other type.

FIG. 4 does not show the outer closure structure 16 made of perforated steel plate 1 and lined with a semi-impermeable cover 17 on the inside thereof.

This semi-impermeable cover 17 has the property of allowing water and air to pass through, but retaining other substances contained in the concrete, including binders.

Therefore, under the action of the pressure applied to the concrete, water and air will move out by the shortest path through the holes in the cover 17 and the outer slow closing structure 816.

In the preferred embodiment, this outer structure 16 rests on a base 20 that includes a plurality of seats for alignment pins 26 that allow automatic alignment of the expandable device 10.

The foundation 20 may include means for draining water through the perforated structure 16. These means consist, for example, of drainage means, such as channels, water drop ducts, etc.

The movable element 13 includes, for example, a substantially tubular expandable element 14 which is connected by a joint 25 to a branch pipe 24, the operating pressure of which is checked by a pressure gauge 23.

A safety valve 28 and one or more fluid inlets 29 are provided on the branch pipe 24.

The device 10 may include one or more rings 22 for ease of handling by a lift truck, bridge crane, crane, or the like.

According to the invention, when the device 10 is installed in position with the outer structure 16 together with the semi-impermeable cover 17 and the funnel-shaped shield 18, a desired void is created between the device IO and the outer closure structure. are arranged so that

After the required amount of concrete has been poured through the concrete 1/concrete 1 area, the apparatus 10 is operated.

- or more pie-breaks 30 may be provided on the outer periphery of the outer structure 16 or inside the device 1 itself to cooperate with the device IO, and may also be located within the foundation 20.

After the concrete has been injected through region 27, pressurized fluid is introduced into branch pipe 24 and the pressure of this fluid is checked by pressure cage 23.

The pressurized fluid enters and expands the expandable element, which in this example is a tube element.

The pressure is transmitted to the bar 11 and applies the necessary pressure to the poured concrete 19.

This pressure facilitates the evacuation of water and air, resulting in rapid densification and drying.

As mentioned above, the expandable element 14 may be embodied as a tube element 1 into which pressurized fluid is injected, but it may also be constituted, for example, by a cam 114, as shown in FIG. Figure 7a shows the cam in the rest position and Figure 7b in the maximum displacement position.

This cam 114 has the same function as the expandable element 14 and is therefore an equivalent.

Instead of a cam, levers, wedges, jacks, etc. may be used, ie any means capable of effecting a controlled displacement of the element 13 relative to the carrier structure 12.

If desired, the device 1o may be embodied as part of the slow-closing means, in which case it forms only one side of the slow-closing means.

If the impermeable elastic cover 11
, 113 is not suitable or is unable to perform this function at all (e.g. when device 1
0 is an outer late-closing element), suitable means for producing the return movement must be provided, or else the element 14, which can be enlarged, Ill itself
This is done so that the restoring effect of iJ motion Niremen i・13,113 can be obtained.

In this case, the impermeable elastic cover 11 must have no more elastic properties than are necessary to keep it from applying pressure to the two elements which hardly deform.

For example, this may be the case if the device 10 is provided on the straight side of the outer closure means.

According to a variant shown diagrammatically in FIG.
13 to help maintain proper circumferential alignment between them. No. (
In the figure, the rubber cover 11 has been removed.

4. ff of the drawing? 1 is a schematic sectional view of the device of the internal type in the closed position; FIG. 2 is a schematic sectional view of the device of FIG. 1 in the inflated position;
Part 3 is a partially cutaway side view of the apparatus shown in Fig. 1; Fig. 4 is a side view of the apparatus of the present invention for manufacturing cylindrical pipes; Fig. 5 is a plan view of the apparatus shown in Fig. 4; The figures show a cross-sectional view of a portion of a preferred inflation means; Figures 7a and 7b are cross-sectional views of an equivalent inflation means; and Figure 8 shows a variant of the intermediate element.

10... device, 11... Impermeable elastic cover, 12...Support structure, 13...Movable element, 113...〃 213... intermediate movable plate, 14... Expandable element, 114... 15...Guide, 115...〃 16...Outer shielding structure, 17...Semi-annual transparent cover, 18...Funnel-shaped shield, 19... Injected concrete, 20...Basics, 21...Protrusion, 121...〃 22...Ring, 23...pressure cage, 24...branch pipe, 25... joint, 2[;...alignment pin, 27... Concrete injection area, 28...safety valve, 29...Fluid intake port, 30...High break.

Margin below Figure 1 Figure 3 Figure 4 Figure 6

Claims (1)

Claims: 1. An apparatus (10) capable of being expanded by controlled expansion, suitable for carrying out concrete moldings and capable of processing pure or reinforced concrete. , comprising impermeable elastic cover means (11) cooperating with at least one movable element (13, 113) and a carrier structure (12), comprising at least one expandable nilemen 1-(14°11);
4) is the supporting structure (12) and the movable elmmen) (13
). 2. Movable elements (13, 113) guide (1
5. The device according to claim 1, which cooperates with the carrier structure (I2) via the support structure (I2). 3. The protrusion (21, 121) is connected to the movable element (13, 1
13) and a carrier structure (12). 4. According to any one of claims 1 to 3, the expandable element (14) comprises at least one tube element that is inflated by pressurized fluid. equipment. 5. Device according to any one of claims 1 to 3, in which the expandable element (14) comprises at least a plurality of forces (11). 6. The device according to any one of claims 1 to 3, wherein the expandable element (14) comprises at least one (wedge-shaped means). 7. Expandable elm 8. The device according to any one of claims 1 to 3, characterized in that the expandable element (I4) comprises means having at least one jack. Claim 1 comprising means for at least one lever
A device described in any one of the first generation from the section to the third river. 9. Device according to any one of claims 1 to 9, comprising a common actuation means (24) for a plurality of expandable elements (14). 11. The device according to any one of claims 1 to 1O, comprising alignment means (26). 12. Device according to any one of claims 1 to 11, cooperating with at least part of the slow closing means made of a perforated steel plate (16). 13. Claims 1 to 12, wherein at least a part of the slow closing means made of perforated steel plate (16) is lined with a semi-impermeable cover (I7)
Apparatus according to any one of the preceding paragraphs. 14. A device according to any one of claims 1 to 13, which constitutes a slow-closing element cooperating with a hollow interior within the product. 15. The device according to any one of claims 1 to 13, constituting a slow-closing element cooperating with the outside of the product. 16. Claim 14 constituting a part of the slow closing means
Apparatus according to paragraph or paragraph 15. 17. A plurality of intermediate movable elements equipped with reciprocating means
- (213). 18. The device according to any one of claims 1 to 17, in which at least a part of the slow closing means (I6) is connected to the vibrator (30).