JPH07110488B2 - Double formwork machine for PC beam production - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a double formwork apparatus used for manufacturing a PC beam.

[Prior Art] Most PC beam formwork devices used in construction work sites consist of an assembly of a bottom formwork plate made to match the beam dimensions and formwork on both sides.

[Problems to be solved by the invention] Therefore, whenever the height or width of the beam is changed, the formwork is reworked or a new formwork is produced each time. For this reason, the formwork cost was high and it was extremely uneconomical.

In addition, since it is often not possible to divert to other work sites, most of the steel formwork that can be used many times,
Mainly in mass production plants, it is not actually used for work sites, and due to lack of labor, there are few skilled workers and it is becoming difficult to secure quality.

The present invention was conceived in order to solve the above-mentioned conventional problems, and the purpose thereof is to easily change the formwork dimensions according to the dimensions of the beam, and it is also possible to divert to other work sites, It is to provide a double formwork device for manufacturing PC beams, which can easily ensure quality.

[Means for Solving the Problem] The present invention according to the above object, a rectangular bottom form plate having a large number of set holes arranged in parallel in the longitudinal direction at regular intervals, and a frame supporting the bottom form plate, A fixed mold body in the longitudinal direction that is located in the center of the bottom mold plate and divides the bottom mold plate into left and right parts, and the required fixed form members that are set in parallel on both sides of the bottom mold plate. A plurality of movable mold bodies, each of which is composed of a frame frame in which a mold plate is stretched on the inside, and vertical support plates attached to the outer ends of both ends of the frame frame. Bearing plates provided with bearing holes at the same intervals as the set holes project from both outer sides of the support frame, and the lower ends of the support plates are rotatably supported by the bearing plates to form a movable form body. While being installed so that it can be freely opened to the outside, insert it into the set hole from above the lower edge of the frame The fixing member is fixed to the bottom mold plate, and the connecting member is horizontally laid across the movable mold bodies on both sides so as to be directly detachable.

[Operation] In the above configuration, two casting parts are formed in parallel on the bottom mold plate by the fixed mold body, and two sets of PC beams are simultaneously cast by the set of movable mold bodies.

Further, the movable form body can be opened outward with the bearing portion of the support plate as a fulcrum, and the setting position can be changed for each position of the setting hole on the bottom form plate by the movement of the bearing portion. As a result, the distance from the fixed mold body is changed, and it is possible to correspond to the width dimension of the beam. Further, the height dimension can be made to correspond by placing an adjusting member on the bottom form plate of the casting section.

Further, the present invention will be described in detail with reference to the illustrated embodiment.

[Example] In the figure, reference numeral 1 is a rectangular bottom form plate made of a steel plate, and a large number of set holes 2, 2 are arranged in parallel in the longitudinal direction on both sides of the upper surface at regular intervals. At the center of the bottom mold plate 1, a fixed mold body 4 having a required width, which is an assembly of mold steel materials provided with mold plates 3 and 3 on both sides.
However, the bottom formwork plate 1 is divided into left and right by this fixed formwork body 4 which is fixed by using bolts 5 in the longitudinal direction.

Reference numeral 6 denotes a steel frame that supports the bottom form plate 1. Bearing plates 7 and 7 are provided at the same positions on both outer sides at predetermined intervals. The bearing plates 7 and 7 have a plurality of bearing holes. 8 and 8 are formed at the same intervals as the set holes 2 and 2.

Reference numerals 9 and 9 denote movable mold bodies of the required number having the same height as the fixed mold body 4, and are provided in parallel with the fixed mold body 4 on both sides of the bottom mold plate 1 so as to be connected to each other.

The movable mold frame 9 is composed of a mold plate 10 stretched on the inside of a frame 9a, and vertical support plates 12, 12 having hanging jigs 11 attached to both ends thereof are attached outward. is there. The lower end of the support plate 12 is rotatably supported by a bolt 13 inserted in the bearing hole 8 of the bearing plate 7, and the movable frame 9 is fan-shaped outwardly with the bearing portion as a fulcrum. ,
Placing section on the bottom plate frame plate 1 formed between the fixed mold body 4
Open 14 sides.

Reference numeral 15 is a fastening member for fastening the movable formwork 9 to the bottom formwork plate 1.
It is a pin member that can be inserted into the set hole 2 from above the lower edge 9b of the frame 9a having the insertion hole.

Reference numeral 16 is a connecting member that doubles as a detachable separator that is horizontally stretched over the ends of the movable mold bodies 9 on both sides. Although not shown in the drawing, it is fixed to the fixed mold body 4 by knock pins. .

Reference numeral 17 is a wooden adjusting member provided on the bottom plate of the formwork of the casting part 14 in accordance with the height of the PC beam, and 18 is a small formwork plate (see FIG. 2).

In the above configuration, the set position of the movable mold body 9 can be determined according to the width dimension of the PC beam to be placed. This positioning is performed by changing the position of the bearing portion of the support plate 12 and replacing the bolt 13 serving as a support shaft with the bearing hole 8 corresponding to the width dimension thereof.

When the movable formwork body 9 is raised after the refilling, the position of the movable formwork body 9 is displaced by the amount of the refilling, and the movable formwork frame 9 is located on the bottom formwork plate 1, and the width dimension of the placing portion 14 is also a chain line. It changes as shown in. Further, since the distance between the adjacent set holes 2 and 2 and the distance between the bearing holes 8 and 8 are the same, even if the set position of the movable mold body 9 is changed to the inside or outside by changing the width dimension, The bearing plate 7 can be rotatably pivoted again depending on the position, and the fastening member 15 can be inserted into the set hole 2 from above the lower edge 9b of the frame 9a and re-fixed to the bottom mold plate 1. it can.

After fastening, the movable formwork bodies 9, 9 are connected to each other by bolts or the like, and after the integration, the connecting member 16 is laid horizontally.
It is fixed to the fixed mold body 4 and both movable mold bodies 9, 9. As a result, the width dimension of the two continuous cast parts 14, 14 formed in parallel is accurately ensured.

Further, when changing the height dimension, the adjusting member 17
Is placed in the casting portion to form a casting portion on the bottom mold plate 1 as shown in the figure. As a result, the height dimension of the PC beam to be placed is secured in the placing section.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

Since it consists of the bottom form plate, the fixed form body in the center thereof, and the movable form bodies on both sides, the structure is simple and it is easy to move between work sites.

Since the side parts of the formwork device can be fully opened by moving the movable formwork, work such as bar arrangement is facilitated, and work can be performed efficiently under safety work.

It is possible to change the position of the movable frame and change the width dimension of the driving part by simply reassembling the bearing part of the movable frame, so it can be used to manufacture several types of PC beams with different dimensions. The need for skilled workers required for each specification change is eliminated, and the work can be done by ordinary workers. Therefore, labor shortage can be dealt with.

Since systematization is possible, not only management is easy and quality can be ensured, but also the fixed formwork can be used as a common inner formwork, and the PC beams can be placed alternately. Also, since the cost and labor are not required even when diversion, the manufacturing cost is reduced.

[Brief description of drawings]

The drawings show an embodiment of a double formwork apparatus for producing PC beams according to the present invention. Fig. 1 is a cross sectional view, Fig. 2 is a plan view showing a right half section in cross section, and Fig. 3 is It is a side view. 1 ... Bottom form plate, 2 ... Set hole 3 ... Form plate, 4 ... Fixed form body 6 ... Support frame, 7 ... Bearing plate 8 ... Bearing hole, 9 ... Movable form body 9a …… frame Frame, 9b …… bottom edge 10 …… template, 11 …… suspension jig 12 …… support plate, 13 …… bolt 14 …… placement part, 15 …… fastening member 16 …… connection Material, 17 ... Adjusting member

Claims (1)

[Claims] 1. A rectangular bottom form frame plate in which a large number of set holes are arranged in parallel in the longitudinal direction at regular intervals, a frame for supporting the bottom form frame plate, and a central part of the bottom form frame plate. It consists of a fixed formwork body in the longitudinal direction that divides the bottom formwork plate into left and right parts, and a required number of movable formwork bodies set on both sides of the bottom formwork plate in parallel with the fixed formwork body. A frame frame in which a movable mold body is stretched with a template inside,
A support plate in the vertical direction attached to the outer sides of both ends of the frame and a bearing plate having a plurality of bearing holes at the same intervals as the set holes are projected on both outer sides of the support frame. The lower end of the support plate is rotatably supported on the bearing plate to attach the movable mold body to the outside so that it can be opened outward, and the bottom is fixed by a fastening member inserted into the set hole from above the lower edge of the frame. A double formwork machine for PC beam production, characterized in that it is fixed to the formwork plate and the connecting material is laid horizontally across the movable formwork bodies on both sides so that it can be detached directly.