JPS6039232Y2 - Steel rod arrangement adjustment device for slab formwork, etc. - Google Patents

Description

[Detailed description of the invention] This invention enables the arrangement of steel bars such as slab formwork to be changed arbitrarily by simply changing the arrangement of spacers, replacing the inner plate, and moving the outer support plate. The present invention relates to an array adjustment device.

The present inventor devised and marketed a steel rod arrangement adjustment device for slab formwork, etc., related to Utility Model Publication No. 59-3865, before filing the present application.

This device is installed inside each frame body that makes up the formwork,
The inner plate in which the steel rod support is inserted through the hole is made at any location, and is replaceable.Sliding guides in the longitudinal direction are provided on the top and bottom of the outside of each frame, and the support of the inner plate is inserted into the upper and lower sliding guides. This structure has movably engaged support plates that fit and support steel rod supports into receiving holes that match the holes.If you want to change the arrangement of steel rods relative to a slab, etc., you can use the inner plate of each frame. If you replace it, make insertion holes in an arbitrary arrangement, and move the support plate that engages the outside of the frame along the guide to match the insertion holes,
It had the feature that the supports could be freely relocated and any desired arrangement of steel bars could be obtained using the same formwork.

However, each frame in this device is formed by welding ribs at predetermined intervals between the upper and lower plates, and the ribs cannot be repositioned, so these ribs limit the position of reinforcement. There were some problems.

This invention was made to solve the above-mentioned problems, and the upper and lower plates of each frame in the formwork are connected by connecting pieces at both ends, and the other parts are sandwiched between movable spacers. It is an object of the present invention to provide a steel bar arrangement adjustment device for slab formwork, etc., which is connected by bolts that can be inserted into arbitrary bolt holes, and whose spacers are freely repositionable, so that the steel bar arrangement is not restricted by the reinforcement arrangement caused by the spacers. The purpose is

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 square slag, there are four frames 1. 2.3. 4 are combined in a mange shape as shown in Figure 9 of the drawing, and each frame body 1, 2. 3.
By moving the molds 4, various types of molds having different sizes and shapes can be formed.

a and b are the upper plate and lower plate of each frame 1.2.3.4, both ends of which are connected by connecting pieces C and c, and other parts are provided with spacers 5 made of round or square pipes or shaped steel. At the same time, drill bolt holes 6 at a narrow pitch between the upper plate a and the lower plate A, insert the bolts 7 into the bolt holes 6 that do not interfere with the steel rod arrangement, and screw the nuts 8. By doing so, the frame body 1. 2. 3. A protrusion 9 is provided at the center of the inner side of the upper plate a and the lower plate, respectively, and the notches 10 provided at both ends of the spacer 5 are engaged with the protrusion 9 to provide accurate and strong construction. In addition, the inner edges of the upper plate a and the lower plate A are provided with supporting step portions 11, 11 of the inner plate, which will be described later, and the outer edges are provided with support plates 11 and 11, which will be described later. A sliding guide 12.12 is provided.

13 is an inner plate, each frame 1.2. 3. Both upper and lower ends are supported by the supporting steps 11, 11 in 4, and these parts are fixed to the supporting steps 11, 11 with nails or screws 7 so that they can be easily replaced.The material is wood, thin iron plate, etc. , so that the insertion hole 14 of the support plate, which will be described later, can be easily opened at any desired position.

15 applies compressive force to the product slab 16;
6, use a steel rod with a thickness that can provide the required tension, and have both ends supported by a support 17.17 with a release taper attached to the part inserted into the formwork A.
The intermediate portion of the secondary support member 17.17 is inserted into the insertion hole 14.14 made in the inner surface plate 13.

Reference numeral 18 denotes a support plate of the support body 17, whose upper and lower ends are movably engaged with the outer sliding guides 12.12 of the frames 1 to 4.
A receiving hole 19 of the support body 17 corresponding to 4 is provided, and this receiving hole 1
The support body 17 is fitted into the support plate 9, and the flange 20 thereof is locked to the support plate 18.

Reference numeral 21 denotes a pressure bearing plate which is fixedly attached to the inner end of the support 17 and inserted into the slab 16, and is attracted to the magnet m embedded and fixed in the support 17 to securely hold it in a fixed position.

Reference numeral 22 denotes a nut screwed onto a threaded portion provided at one end of the steel rod 15. By tightening this nut 22, tension is applied to the steel rod 8, and compressive force is applied to the slab 16.

Reference numeral 23 denotes a base on which the formwork A is set, and the formwork A is assembled on this base 23 as the bottom.

The support 17 for the steel rod 8 is hollow, as shown in FIG. 4 of the drawings, so that the steel rod 15 can be inserted and a nut can be screwed onto the steel rod 15, and its cross-sectional shape is normal. It is circular, and normally one is provided in the center, but when inserting steel rods 15 in double rows to increase the strength, two steps are provided, upper and lower, as shown in Figure 7 of the drawing. In some cases, an oval shape as shown in FIG.
A receiving hole 19 of 8 shall be opened.

Next, the operation of the device according to the present invention will be explained.

When inserting the steel rods 15 into the slab 16 in the arrangement shown in FIG. 5, avoiding the arrangement position of the steel rods 15, as shown in FIG. The frames 1 to 4 allow steel rods 15 to be arranged at desired positions.

After completing the spacer adjustment for frames 1 to 4 in this way, each frame 1
An inner plate 13 with insertion holes 14 made in accordance with the arrangement of the steel rods 15 is attached to the inside of the inner plate 12.4, and a support plate 18 is engaged with the outer sliding guide 12. from the receiving hole 19 of the support plate 18 to the insertion hole 14 of the inner surface plate 13.
The flange 20 of the support 17 of the steel bar 15 is connected to the support plate 1.
8 until it contacts the corresponding support 17.
By inserting the steel rods 15 through the holes 17, hooking the nuts 22 onto the threaded portions, and temporarily tightening the nuts 22, the steel rods 15 are inserted into the formwork A in the desired arrangement.

Once the steel rods 15 have been arranged in this way, known reinforcing bars are installed in the formwork A (this reinforcing bar may be done before inserting the steel bars 15) and concrete is poured, and the steel bars 15 are inserted. Slab 16 is completed.

However, this slab 16, especially for railway points, often has different dimensions and shapes, and the arrangement of the steel rods 15 must be changed each time, so in this case, the inner plate 13 must be removed. If the arrangement interval of the steel rods 15 becomes large, the positions of the spacers 5 in the frames 1 to 4 are changed accordingly, and the intervals are widened so that the insertion holes 1
4 is installed, and when the arrangement interval becomes smaller, the position of the spacer 5 in the frames 1 to 4 is changed accordingly, and the inner surface plate 13 with the insertion hole 14 opened is narrowed in interval.
, move the support plate 18 so that it fits into the insertion hole 14 of the inner surface plate 13, and insert the support plate 17 from the receiving hole 19 to the insertion hole 14.
If the steel rod 15 is supported by the superior support 17,
Even if the same formwork A is used, the arrangement of the steel rods 15 can be freely adjusted to be wide or narrow, and various types of slabs etc. with different steel rod arrangements can be easily manufactured using the same formwork.

As mentioned above, in the device of the present invention, when it is desired to change the arrangement of steel rods with respect to a slab, etc., a spacer inserted between the upper plate and the lower plate of each frame is used to avoid the arrangement position of the steel rods. After positioning and fixing with bolts, replace the inner surface plate of each frame, drill through holes in an arbitrary arrangement, and align the support plate that engages with the outside of the frame along the guide with the through holes. By moving the support, you can freely position the support and obtain any steel bar arrangement using the same formwork, so it is also possible to produce a large number of slabs with different steel bar arrangements in small quantities. , Formwork is very cheap and the operation rate of the formwork is high, so it has a great effect on reducing the production cost of slabs etc. reinforced with steel rods.

In particular, this device connects the upper and lower plates of each frame body in the formwork only at both ends with connecting pieces, and the other parts are connected with bolts with the spacer in between, so the movement of the spacer is prevented. This gives you the flexibility to arrange the steel rods anywhere you want, and the bolt connection of the upper and lower plates with the spacer in between has the same precision and strength as a conventional frame with ribs welded to the frame. It has the characteristics that guarantee the following.

[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 front view showing one of the frame bodies in the formwork. Figure 2 is a plan view of the same as above. FIG. 3 is a front view of a formwork formed by the same method as above. FIG. 4 is a partially omitted enlarged cross-sectional view of the same formwork as above taken longitudinally at the steel rod arrangement section. FIG. 5 is a partial view taken longitudinally at the spacer portion of the same as above. FIG. 6 is a partial plan view of the upper plate cut away at the spacer portion of the same as above. FIG. 7 is an external view showing the deformation of the support plate. FIG. 8 is an external view of the support body according to another modification of the support plate. FIG. 9 is a schematic plan view of a formwork whose dimensions and shape can be varied. FIG. 10 is a plan view showing an example of the steel rod arrangement within the slab, with concrete omitted. FIG. 11 is a plan view of a group of railway point slabs each having different dimensions and shapes. In the figure, A is the formwork, 1. 2. 3. 4 is a frame body, a is an upper plate, b is a lower plate, C9C is a connecting piece, 5 is a spacer, 7 is a bolt, 12.12 is a sliding guide, 13 is an inner plate, 15 is a steel rod, 17 is a support body , 18 is a support plate, and 19 is a receiving hole.

Claims (1)

[Scope of utility model registration request] Each frame body in the formwork is configured such that the upper plate and the lower plate are connected by connecting pieces at both ends, and the other parts are connected by bolts that can be inserted into arbitrary bolt holes with movable spacers in between. Attach an inner surface plate into which a steel rod support insertion hole is made at an arbitrary location on the inside of each frame body, provide sliding guides in the longitudinal direction on the upper and lower sides of the outside of each frame body, and attach the inner plate to the upper sliding guide. A steel rod arrangement adjustment device for a slab formwork or the like, characterized in that a support plate for fitting and supporting a steel rod support is movably fitted into a receiving hole aligned with a support insertion hole.