JPS593865Y2 - Steel rod arrangement adjustment device for slab formwork, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steel bar array adjustment device for a slab formwork or the like that can arbitrarily change the arrangement of steel bars by simply replacing the inner plate and moving the outer support plate.

Recently, reinforced slabs have been used in which steel rods are inserted into the slab and tension is applied to the steel rods.
If the size or shape of this type of reinforced slab changes, the arrangement of the steel bars must be changed accordingly to balance the stress.For this purpose, a special For example, when the dimensions of each slab are different, such as slabs for railway points as shown in Figure 8, formwork must be used for each product. When making a mold, a huge amount of mold is required, which not only increases the cost of the product, but also causes the mold to be scrapped after one use, resulting in a large waste of materials.

The present invention was developed in consideration of this drawback.If the arrangement of the steel rods changes, the inner plate of each frame is replaced, insertion holes are drilled in the desired arrangement, and the support plates are inserted in correspondence with the insertion holes. An object of the present invention is to provide an apparatus that can manufacture various types of slabs with different steel rod arrangements using the same formwork by moving the steel rods.

Next, the apparatus related to the present invention will be explained below with reference to the drawings.

A in the figure is a formwork for manufacturing slabs, etc. In the case of a normal rectangular slab, four formworks 1, 2, 3, 4 are combined in a mange shape as shown in Figure 6 of the drawing, and each frame 1 , 2.3.4, various types of molds with different sizes and shapes are formed.

5 is the inner surface plate of each frame 1, 2.3.4, and
Both the upper and lower ends shall be supported by support steps 6, 6 provided on the upper and lower insides of 4, and these portions shall be fixed to the support steps 6.6 with nails or screws 7 so that they can be easily replaced. Use a wooden board or iron board.

8 is a steel rod to be inserted into the product slab 9 in order to apply compressive force to the product slab 9. The steel rod should have a thickness that can provide the required tension, and both ends of the rod should be tapered for mold release at the part where it will be inserted into the formwork A. The intermediate portions of these supports 1G and 10 are inserted into the insertion holes 11 made in the inner surface plate 5.

Reference numeral 12.12 denotes a pair of sliding guides provided on the upper and lower outer sides of the frames 1 to 4, which engage the support plate 13 in a movable manner. A receiving hole 14 of the support body 10 corresponding to the support body 10 is provided, and the support body 1 is inserted into this receiving hole 14.
0 to lock the flange 15 of the support body 10 to the support plate 13.

Reference numeral 16 denotes a pressure bearing plate which is fixedly attached to the inner end of the support 10 and inserted into the slab 9, and is attracted to the magnet 17 embedded and fixed in the support 10 to securely hold it in a fixed position.

Reference numeral 18 denotes a nut screwed onto a threaded portion provided at one end of the steel rod 8. Tightening of this nut 1B applies tension to the steel rod 8, thereby applying compressive stress to the slab.

Reference numeral 19 denotes a base on which the formwork A is set, and the formwork A is assembled on this base 19 as the bottom.

The support 10 for the steel rod 8 is hollow, as shown in FIG. It is usually circular, and one bar is usually provided in the center, but when inserting steel bars 8 in double rows to increase the strength, two stages are provided, upper and lower, as shown in Figure 4 of the drawing. Depending on the situation, an elliptical shape as shown in FIG. 5 may be used, so the insertion hole 11 in the inner surface plate 5 and the receiving hole 14 in the support plate 13 shall be opened accordingly.

Since the device related to the present invention is constructed as described above, when inserting the steel rods 8 in the arrangement shown in FIG. 1
- 4, engage the support plate 13 with the outer sliding guide 12 in alignment with the insertion hole 11 of the inner surface plate 5, and insert the steel from the receiving hole 14 of the support plate 13 to the insertion hole 11 of the inner surface plate 5. The support 10 of the rod 8 is inserted until its flange 15 abuts the support plate 13, the bearing plate 16 is attracted and held on the inner end of the support 13 by the magnet 17, and the steel is attached to the corresponding support 10.10. Bar 8
The steel rods 8 are inserted into the formwork A in the desired arrangement by inserting the nuts 18 through the screws, hooking the nuts 18 onto the threads, and temporarily tightening the nuts 18.

Once the steel rods 8 have been arranged in this way, a known reinforcing bar 20 is assembled in the formwork A (this reinforcing bar 20 may be done before inserting the steel rod 8), and concrete is poured. The inserted slab 9 is completed.

However, this slab 9, especially when used as a railway point, often has different dimensions and shapes, and the arrangement of the steel rods 8 must be changed each time, so in this case, the inner plate 5 must be replaced. If the arrangement interval of the steel rods 8 becomes large, the interval is widened to match this, and when the arrangement interval becomes small, the insertion hole 11 is opened with a narrowed interval to match this. If you move the support plate 13 so that it fits into the equal insertion hole 11, insert the support body 10 from the receiving hole 14 into the insertion hole 11, and support the steel rod 8 on the same type support body 10, the same type Even if frame A was used, the arrangement of the steel bars 8 could be freely adjusted to be wide or narrow, and various types of slabs etc. with different arrangements of steel bars could be easily manufactured using the same formwork.

As mentioned above, when it is desired to change the arrangement of steel rods in a slab, etc., the device according to the present invention replaces the inner surface plate of each frame, makes insertion holes in the desired arrangement, and inserts the frames in line with the insertion holes. If you move the support plate that engages the outside along the guide,
By freely changing the position of the support, any desired steel bar arrangement can be obtained using the same formwork, so even when producing small quantities of various types of slabs with different steel bar arrangements, the shape of the formwork is very simple. It is inexpensive and increases the operating rate of the formwork, so it is particularly effective in reducing production costs of slabs reinforced with steel rods.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the device related to the present invention.
FIG. 1 is a partially cutaway vertical side view showing the structure. Figure 2 is an inner view of one frame in the formwork. Figure 3 is an elevated view. FIG. 4 is an external view showing a modified example of the support body and support plate. FIG. 5 is an external view showing another modification of the above. FIG. 6 is a schematic plan view of a formwork whose dimensions and shape can be varied. FIG. 7 is a plan view showing an example of the steel rod arrangement within the slab, with concrete omitted. FIG. 8 is a plan view of a group of railway slabs each having different dimensions and shapes. In the figure, A is the formwork, 1.2.3.4 is the frame body, 5 is the inner plate, 8
1 is a steel rod, 10 is a support body, 11 is an insertion hole of the support body 10, 1
2.12 is a sliding guide, 13 is a support plate, 14 is a support body 1
0 hole.

Claims (1)

[Scope of utility model registration request] The inner plate, which is attached to the inside of each frame body constituting the formwork and has holes for inserting steel rod supports at arbitrary locations, is replaceable, and sliding guides in the longitudinal direction are provided at the top and bottom of the outside of each frame body. A slab formwork, etc., characterized in that a support plate for fitting and supporting a steel bar support into a receiving hole aligned with the support insertion hole of the inner surface plate is movably engaged with the sliding guide. Steel rod arrangement adjustment device.