JP5422600B2 - Concrete molding formwork - Google Patents

Description

  The present invention relates to a concrete mold having a core, such as a mold used for manufacturing a concrete molded product for a side groove.

  In a concrete molded product in which a hollow portion is formed in the longitudinal direction, a core (which constitutes a frame) that forms this hollow portion, a bottom plate, a small plate, and side plates (hereinafter, both plates are collectively referred to as a frame plate). A formwork is formed by combining with a main body made of.

The side plate and the small edge plate can be raised and lowered to the frame base, and the side plate and the small edge plate are erected to form a mold assembly. Then, a take-out gap is formed.
On the other hand, the core is configured to be expanded and contracted to the periphery by a plurality of frame plates. When the mold is removed, the core is contracted to the center and disconnected from the concrete molded product to form an extraction gap.

Therefore, the concrete molded product and the core are separated from each other by pulling out the core that forms a gap with the concrete molded product in the horizontal longitudinal direction, and then lifting the concrete molded product from the bottom frame with a lifting machine (such as a crane). There is a method of moving to a predetermined place.
As another method, a method has been proposed in which a concrete molded product is taken out from the mold body while the core is inserted, placed in another place, and the core is pulled out to obtain a concrete molded product.

In such a mold, it is efficient if the concrete molded product itself can be directly pulled out from the mold in the horizontal and horizontal direction and demolded.
However, since the protrusion for forming the opening on the upper surface of the concrete molded product is erected integrally with the bottom plate, it is necessary to raise and take out the concrete molded product in order to avoid the protrusion. The method as described above must be adopted.

  However, in each of the above methods, apart from the installation surface of the molding form itself, there is a need for a space where the core and the concrete molded product can be temporarily placed nearby. In addition, a plurality of lifting and lowering machines are required, and there is a problem in work efficiency.

JP 10-1119023 A JP 2003-225904 A

  Therefore, a core is disposed in the mold space formed by the bottom plate and the surrounding frame plate, and the bottom plate has a protrusion on the top surface that forms the opening of the concrete molded product, and the base frame and the surrounding frame plate. A concrete molding form is proposed in which the bottom plate is lowered to a position where the projections on the bottom plate do not interfere with the concrete molded product after molding, and the concrete molded product is pulled out from the core in the horizontal direction. ing.

  The present invention intends to provide a configuration in which the bottom plate can be easily raised and lowered in such a concrete mold.

  According to the first aspect of the concrete mold according to the present invention, a core is disposed in a mold space formed by the bottom plate and the surrounding frame plate, and the bottom plate is a protrusion that forms an opening of the concrete molded product. The bottom plate is moved up and down in the upper and lower spaces formed in the base frame and the surrounding frame plate, and the bottom plate is lowered to a position where the projection of the bottom plate does not interfere with the concrete molded product after molding. In a concrete mold that is pulled out from the core in the horizontal direction, a wedge is interposed between the bottom plate and the base frame, and the bottom plate to be engaged is lifted and lowered using the inclined surface of the wedge body that slides on the base frame. It is what.

Invention of the concrete mold frame of claim 2 is the invention of claim 1, wedge is a plate body made of a horizontal plane engagement face of the bottom plate to form an inclined surface and a top, whereas, in the bottom plate Is characterized in that a recess having substantially the same shape as the wedge body is formed on the engagement surface of the bottom plate on the engagement surface with the wedge body .

Invention of the concrete mold frame of claim 3 is the invention of claim 1, wedge is a plate body made of a horizontal plane engagement face of the bottom plate to form an inclined surface and a top, whereas, in the bottom plate Is characterized in that the trochanter is provided below and engaged with the engagement surface of the wedge body.

  According to a fourth aspect of the invention of the concrete molding form of the present invention, in the first to third aspects of the invention, the bottom plate is connected to the base frame via a guide that restricts only the elevation.

  A core is disposed in a mold space formed by the bottom plate and the surrounding frame plate, and the bottom plate has a protrusion on the upper surface that forms an opening of a concrete molded product, and has a base frame and a surrounding frame plate. In a concrete molding form which moves up and down in the formed vertical space, lowers the bottom plate to a position where the projection of the bottom plate does not interfere with the concrete molded product after molding, and removes the concrete molded product from the core in the horizontal direction. Since the wedge body is interposed between the bottom plate and the base frame, and the bottom plate to be engaged is lifted and lowered using the inclined surface of the wedge body that slides on the base frame, the structure is simple, and the wedge is formed. Since the inclined surface of the body is used, the weighted bottom plate can be lifted and lowered smoothly with minimum power.

In addition to the effect of the invention of claim 1, the wedge body is a plate body in which the engagement surface with the bottom plate is composed of an inclined surface and a horizontal surface forming the top portion. On the other hand, since the bottom plate is formed with a concave portion having substantially the same shape as the wedge body on the engagement surface with the wedge body, the inclined portions of the wedge body and the concave portion of the bottom plate are moved up and down. The effect of sliding and acting is smooth and reliable.
In addition, the bottom plate engages with the horizontal portion of the wedge body when assembling the mold, and the wedge body and the concave portion are engaged with each other when the mold is removed.

In addition to the effect of the invention of claim 1, the wedge body is a plate body in which the engagement surface with the bottom plate is composed of an inclined surface and a horizontal surface forming the top, On the other hand, since the bottom plate is provided with a trochanter and engaged with the engagement surface of the wedge body, the trochanter of the bottom plate rotates relative to the slide of the wedge body and rolls on the slope of the wedge body. Therefore, there is an effect that the raising and lowering is easy and reliable.

  In addition to the effects of the inventions of claims 1 to 3, the invention of the concrete molding form of claim 4 is connected to the base frame via a guide that regulates only raising and lowering, so by sliding the wedge body, The bottom plate has an effect of reliably transmitting to the lifting and lowering action without causing lateral displacement.

It is a front view at the time of the mold assembly which shows one embodiment of the mold of the present invention. It is the top view which notched the partial baseplate of FIG. It is a front view at the time of mold removal of FIG. FIG. 4 is a side view of FIG. 3. It is a front view at the time of the type | mold assembly which shows other embodiment. It is a front view at the time of mold removal of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The concrete molding form according to the present embodiment manufactures a concrete molded product having a hollow body in the longitudinal direction like a side groove and having an opening for fitting a separate lid on a part of the upper surface. Is.

  The concrete molding form includes a frame 1 and a mold for a concrete molded product provided on the frame 1, and the mold for the concrete molded product is a bottom plate 2 and a surrounding frame plate 6. A pair of longitudinal side plates, a pair of front and rear end facet plates, and a core disposed in a mold space formed by the bottom plate 2 and the surrounding frame plate 6 are formed.

  The configuration of the mold frame is, for example, in a state in which an upper and lower space 3 is provided on the underframe 1, a tiltable side frame and a small edge plate are supported on the support column, and a horizontal bar continuously connected to the support column is inserted into the core. The core is locked, and each constituent member is fixed via a support column that is erected and fixed to the base 1.

  In the figure, a mold formed by a pair of side plates constituting a peripheral frame plate 6, a pair of front and rear end facet plates, a bottom plate 2 and a peripheral frame plate 6 so that the members which are the features of the present invention can be seen. A detailed configuration such as a core disposed in the frame space is omitted and indicated by a chain line.

  Further, the bottom plate 2 has a projection 21 that forms an opening of a concrete molded product formed on the upper surface, and can be moved up and down in the vertical direction. The projection 21 of the bottom plate 2 comes into contact with the core, and the frame plate 6 and the bottom plate 2 can be lowered to a position where the protruding portion 21 of the bottom plate 2 does not interfere with the concrete molded product.

  That is, a core is disposed in a mold space formed by the bottom plate 2 and the surrounding frame plate 6, and the bottom plate 2 has a protruding portion 21 that forms an opening of a concrete molded product on the top surface, and the frame 1 And the upper and lower spaces 3 formed in the surrounding frame plate 6 are moved up and down, and after molding, the bottom plate 2 is lowered to a position where the projections 21 of the bottom plate 2 do not interfere with the concrete molded product, so that the concrete molded product is placed in the horizontal direction. Constructs a concrete formwork that can be removed from the child.

  The bottom plate 2 is moved up and down by interposing the wedge body 4 between the bottom plate 2 and the frame 1 and engaging the bottom plate 2 with the frame 1 around the inclined surface 41 of the wedge body 4 that slides on the frame 1. The vertical space 3 formed in the frame plate 6 is moved up and down beyond the vertical width of the protrusion 21 of the bottom plate 2.

The wedge body 4 is a plate body having an upper end surface that is an engagement surface with the bottom plate 2 and formed of an inclined surface 41 and a horizontal surface 42 that forms the top, and a side surface having a trapezoidal thickness. On the frame 11 in the longitudinal (side frame) direction, a plurality of wedge bodies 4, 4,.
Further, the height difference (trapezoidal height) of the inclined surface 41 is a length exceeding the vertical width of the protruding portion 21 of the bottom plate 2, and the groove is used to ensure engagement and support with a leg plate 22 described later. May be formed on the upper end surface.

  Each wedge body 4 is integrally connected by a lattice rod 43, and one end of the lattice rod 43 and the advance / retreat member of the advance / retreat mechanism 44 attached to the base frame 1 are connected to each other, and the wedge body 4 is driven by the advance / retreat member. The bodies 4, 4... Slide on the frame 11 in the longitudinal direction of the underframe 1 in an integrated manner.

On the other hand, a leg plate 22 is suspended from the bottom plate 2 on the longitudinal frame 11 of the frame 1 at a position where it abuts against the wedge bodies 4, 4..., And the lower end surface of the leg plate 22 is the wedge body 4. It is supported and engaged with the upper end surface of the.
A recess 23 having substantially the same shape is formed at the lower end of the leg plate 22 corresponding to each wedge body 4.

Therefore, when the wedge body 4 is in a position where it fits into the recess 23, the leg plate 22 is in the lowered position where it is placed directly on the frame 11 in the longitudinal direction of the base frame 1, and the protrusion 21 of the bottom plate 2 is the frame plate. It will be in the state at the time of mold removal before mold assembly exposed from 6 downward.
Then, if the wedge body 4 is slid in the direction of the inclined surface 41 by the advance / retreat mechanism 44 because of the mold assembly, the bottom plate 2 gradually rises while the inclined surfaces of the recesses 23 rub against each other, and the top horizontal surface 42. When the leg plate 22 is in the raised position, the protruding portion 21 of the bottom plate 2 is in a state of being assembled (molded) with the core plate in the frame plate 6.

  In the figure, reference numeral 5 denotes a guide mechanism for restricting the bottom plate 2 with respect to the frame 1 so that it can only be raised and lowered. A guide rod 13 is erected vertically on a guide plate 12 protruding from the frame 1, and this guide rod A restricting plate 25 having a through-hole 24 through which 13 penetrates is provided on the leg plate 22 so as to overlap the guide plate 12.

  The guide mechanism 5 shown in the drawing is an example. For example, a guide plate having a long hole is attached between the base frame 1 and the bottom plate 2 so that the long hole is positioned in the vertical direction. A pin or a trochanter sliding along the other may be provided on the other side and connected.

Here, the manufacturing process of a concrete molded product will be described. First, by sliding the wedge body 4, the bottom plate 2 is raised to form a mold, and the concrete is put into the frame.
When the concrete is solidified, a gap is formed between the concrete molded product and the side plate and the edge plate which are the surrounding frame plates 6.
Next, while maintaining the vertical position of the core and the concrete molded product, the wedge body 4 is slid in the opposite direction, and the bottom plate 2 is lowered to a position where the protrusion 21 of the bottom plate 2 does not interfere with the concrete molded product, It is obtained by pulling a concrete molded product from the core in the horizontal direction.

FIG. 5 and FIG. 6 are diagrams showing other embodiments, and the engagement of the bottom plate 2 with the wedge body 4 is performed by the trochanter 26 provided below the bottom plate 2.
As the trochanter 26 of the bottom plate 2 rotates relative to the slide of the wedge body 4 and rolls on the inclined surface 41 of the wedge body 4, the lifting and lowering is easy and sure.
It is also desirable to form a groove on the rolling contact surface of the trochanter 26 to prevent the wheel from being removed from the wedge body 4.
Moreover, it is also preferable to form a protrusion 45 as a stopper on the horizontal surface 42 at the top of the wedge body 4 to enhance safety.

  The embodiments of the present invention have been specifically described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and other embodiments can be used without departing from the spirit of the invention. Is also applicable.

1 frame 11 longitudinal frame 12 guide plate 13 guide rod 2 bottom plate 21 projection 22 leg plate 23 recess 24 through hole 25 restricting plate 26 trochanter 3 upper and lower space 4 wedge body 41 inclined surface 42 horizontal plane 43 grid rod 44 advance and retreat Mechanism 45 Projection 5 Guide mechanism 6 Frame plate

Claims (4)

A core is disposed in a mold space formed by the bottom plate and the surrounding frame plate, and the bottom plate has a protrusion on the upper surface that forms an opening of a concrete molded product, and has a base frame and a surrounding frame plate. In the concrete molding form that moves up and down in the formed vertical space, lowers the bottom plate to a position where the projection of the bottom plate does not interfere with the concrete molded product after molding, and removes the concrete molded product from the core in the horizontal direction,
A concrete molding form, wherein a wedge body is interposed between a bottom plate and a base frame, and a bottom plate to be engaged is moved up and down using an inclined surface of a wedge body that slides on the base frame. The wedge body is a plate body in which the engagement surface with the bottom plate is composed of an inclined surface and a horizontal plane that forms the top, while the bottom plate has a concave portion that is substantially the same shape as the wedge body on the engagement surface with the wedge body. The concrete molding form according to claim 1, wherein The wedge body is a plate body in which the engagement surface with the bottom plate is composed of an inclined surface and a horizontal surface forming the top, while the bottom plate is provided with a trochanter to engage with the engagement surface of the wedge body. The concrete molding form according to claim 1, wherein:   The concrete molding form according to any one of claims 1 to 3, wherein the bottom plate is connected to the underframe via a guide that restricts only the raising and lowering.

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