JPS6145236Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slope joint that is used at the abutting portion of concrete blocks to integrally connect a plurality of blocks.

Conventionally, when connecting concrete blocks for slope protection (hereinafter referred to as ``blocks''), the reinforcing bars of each block are exposed from the end face or corner tip, and the reinforcing bars of each block to be collided are tied together. However, the method that is mainly used is to pour mortar into the voids at the butt points. With this method, there is less movement of the blocks and there are fewer steps at the joints, but thin reinforcing bars have weak binding force, and thick reinforcing bars are difficult to bundle.
It took time and effort to bind the reinforcing bars and pour the mortar, and there were also other difficulties such as the need to be careful when handling the reinforcing bars that protruded from the blocks so as not to break them during transportation or to avoid injuring one's body with the reinforcing bars.

In order to eliminate this drawback, a technique using a ring as a connecting device has been disclosed (Utility Model Publication No. 53 -
10729), there is a risk that a step may occur at the connecting part,
There are practical problems such as the need to pour mortar.

The present invention was created in view of the above, and includes a retaining fitting that clamps the upper and lower surfaces of each block to be abutted,
The block separation prevention hook provided on this metal fitting provides a frame joint that can be reliably and firmly connected without any steps.

The present invention will be described in detail below based on embodiments shown in the drawings.

Fig. 1 shows an example of the frame joint 1 according to the present invention, which includes a joint support 11 that is slightly shorter than the thickness of the block, and a joint support 11 that is attached and fixed at right angles to the upper and lower ends of the joint support 11. The upper and lower sides each have four retaining metal fittings 12...13..., and each of the long opposing locking metal fittings 12... has a block separation prevention hook (hereinafter referred to as a "hook") at its tip. ) 14 are provided facing downward and upward, respectively.

In addition, each of the upper and lower retaining metal fittings 12...13... is 90 in plan view.
They are fixed in the same manner on the top and bottom at intervals of 30 degrees, and the long retaining metal fittings 12 and the short retaining metal fittings are reversed at the top and bottom.

This slope joint 1 is used, for example, when connecting rod-shaped slope concrete blocks 2 shown in FIGS. 2a and 2b in a cross shape as shown in FIG. 2c. This block 2 has both ends 2a and 2b sharpened at right angles to form abutting surfaces 21 and 21, and a central groove 2 at the tip thereof.
2 are installed vertically, and the center groove 22 is provided on the upper surface of one end 2a and the lower surface of the other end 2b, and the abutting surface 2
1,21 fan-shaped notch steps 23,2
3. Fan-shaped notch steps 24, 24 are provided on the lower surface of one end portion 2a and the upper surface of the other end portion 2b, respectively, with the center groove 22 serving as a key point and not exceeding the abutting surfaces 21, 21, and each notch step An arcuate slide groove 2 is formed along the outer edge of the portions 23, 23 to be deeper than the notched step portions 23, 23.
It is engraved with numbers 5 and 25.

Then, these four blocks are connected to each end 2a, 2b.
When the blocks are faced alternately and butted together, a vertical hole 3 consisting of a central groove 22 is formed in the center. This vertical hole 3 is for inserting the joint support 11 of the frame joint 1. In the illustrated example, when one or two of the four blocks 2 are removed, the respective stopper metal fittings 12, 13 are inserted at an angle to the axis of the block as shown by the chain line in Fig. 2c. After that, all the blocks 2 are butted together and the joint support 11 is rotated in the direction of the arrow. Then, the respective stopper metal fittings 12
The metal fittings 13 are set tightly against the upper and lower surfaces of the blocks 2, respectively, so that they hold the blocks from both above and below. At the same time, the hooks 14 at the tips of the metal fittings 12 fit into the slide grooves 25, respectively, to prevent the blocks from separating vertically and horizontally.

Therefore, the blocks connected using this frame joint 1 are free from the risk of forming a step at the abutting point, moving back and forth, left and right, and collapsing.

The stepped notches 23 and 24 are provided to prevent the retaining metal fittings 12 and 13 from protruding from the block surface, and ensure smooth rotation, especially on the ground contact side. In the case where there is no step, the length of the joint support 11 in this example needs to be approximately the same as the thickness of the block 2. In addition, the length of each retaining metal fitting 12...13, the length of the hook 14..., the mounting position to the metal fitting 12, etc.
It may be determined as appropriate depending on the shape and dimensions of the block, but
The length of the retainer 12 on which the hook 15 is provided is preferably such that it can be removed from the abutting surface 21.

By the way, the frame joint 1 of this example (FIG. 1) has two retaining fittings 12 at both upper and lower ends of the joint support 11.
12 and hooks 14, 14 are each formed from one metal rod and are welded together, and retaining fittings 13, 13 are welded to the sides thereof. In addition, there are those in which holes are made in the upper and lower ends of the joint support 11 and metal rods are inserted and fixed therein (Fig. 3a), and those in which four bent metal rods are bundled together to form the entire joint support including the support support (Fig. 3a). Various manufacturing methods can be considered, such as the one shown in FIG. 3b). Furthermore, it may be coated with plastic to prevent rust or may be a plastic molded product. In addition, each retaining metal fitting 12...13 is attached to the joint support 11.
It may be installed and fixed at a somewhat acute or obtuse angle rather than at a right angle. In addition, the beam joint of this type of structure is
It is also used to connect four square, rectangular, mouth-shaped, etc. blocks 5 whose corners have been processed in the same manner as shown in FIG. 2 (FIG. 4).

Next, FIGS. 5 and 6a show another example of a frame joint for connecting four blocks. First, the one in Figure 5 has all the retaining fittings 12...
are of equal length, and hooks 14 are provided on all of them.

This frame joint 1 is used when slide grooves 25 of the same shape are provided on the top and bottom surfaces of all the blocks to be connected, and the connection force becomes stronger. On the other hand, the beam joint 1 shown in FIG. 6a is
Four retaining fittings 12 are attached to the upper end of the joint support 1, and four retaining fittings 13 are attached to the lower end thereof. This frame joint 1 has an abutting surface 2 as shown in the same figure b.
In the case of a block 2... in which a metal fitting insertion groove 26 is provided in the block 1, and a metal fitting insertion hole 4 is formed in the abutting portion by the groove 26, as shown in FIG. ... are inserted, so that after all the blocks 2 have been abutted, the horizontal frame joints 1 ... can be inserted and connected, speeding up the work. However, even in the case of the horizontal frame joint shown in FIG. 1, it is possible to attach and connect the blocks 5 after abutting all the blocks, as in the case of the block 5 similarly provided with the metal fitting insertion groove 26 as shown in FIG. Become.

On the other hand, the number of these retaining metal fittings 12...13... is not limited to 4 each on the top and bottom, but can be varied in shape and length, such as 3, 2, 6, etc., depending on the number of blocks to be connected and the shape of the blocks. things are used. Examples are shown in FIGS. 7 to 9.

First, when connecting three rod-shaped blocks 2, 2', 2', etc. in a T-shape as shown in Fig. 7a, the horizontal frame joint 1 shown in Fig. 7a When the joint 1 connects two rod-shaped blocks 2', 2' in an L-shape as shown in FIG. 9b, the frame joint 1 shown in FIG. Each block is used when three blocks 6 are connected. In each of these horizontal frame joints, the top and bottom surfaces of each block are clamped with retaining metal fittings, and the blocks are connected with hooks so that they are not separated to ensure a secure and firm connection. Same as in case.

As described above, the horizontal frame joint of the present invention is provided with retaining metal fittings that clamp the upper and lower surfaces of the ends of the blocks to be abutted, on both the upper and lower ends of the joint support made of metal rods, and on the retaining metal fittings. Since it is equipped with a hook that is fitted into the arc-shaped slide groove at the tip of the block to prevent the block from separating, a center groove is provided vertically at the tip of the abutment area, and the tip is moved around the center groove. The concrete blocks of the legal framework, which have arcuate slide grooves on the upper and lower surfaces of the sections, can be connected extremely easily and reliably without any steps, and the reinforcing bars that conventionally protrude from the tips of the blocks can be omitted.
This method is practically effective, as it eliminates the need for tying reinforcing bars and pouring mortar, speeding up and simplifying the construction of the legal framework.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the horizontal frame joint according to the present invention, FIG. 2 a is a plan view showing an example of blocks connected by the horizontal frame joint of FIG. is a partial plan view of the four blocks connected; d is a sectional view taken along line A-A in figure c; Figures 3a and b are perspective views showing different modifications of the frame joint; Similarly, a partial plan view showing another example of the state in which four blocks are connected by the horizontal frame joint shown in FIG. 1, and FIGS. 5 and 6 a are perspective views of the horizontal frame joint showing other different examples, respectively. , Fig. 6b is a plan view of the blocks connected by the horizontal frame joint in Fig. 6a, c is a partial plan view showing the connected state, and Figs. 7 to 9
The figures further show different embodiments, and each figure (a) is a perspective view of a horizontal frame joint, and each figure (b) is a partial plan view of a state in which the blocks are connected. 1...Law frame joint, 11...Joint support, 12,1
3...Fan-shaped notch stepped portion, 14...Hook for preventing block separation.

Claims (1)

[Scope of utility model registration request] It is used at the abutment point of concrete blocks for the concrete block to connect multiple blocks together, and when the blocks are abutted, the vertical hole formed by the center groove vertically installed on the end face or corner tip of the block is used. It consists of a column to be inserted and a plurality of retaining metal fittings fixed to both the upper and lower ends of the column to hold the tip of each block from above and below. 1. A horizontal frame joint, characterized in that at least one of the fasteners is provided with a hook for preventing block separation, which is fitted into an arcuate slide groove provided at the tip of the block with the center groove as the center.