JPH0218142Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a connecting device for irrigation channels, etc. as shown in Fig. 1, and one of the two mounting holes 1a and 1b bored at both ends is a round hole. 1b and the other one abuts the connecting fitting a formed in the long slot 1a over each side of adjacent concrete blocks A and B,
Bolts 4b inserted into the round holes 1b and bolts 4a inserted into the long groove holes 1a are connected to nuts 5b anchored to each of the concrete blocks A and B, respectively.
5a, and a wedge piece 6 is wedged between the nut 5a and the long slot 1a.The purpose of this invention is to have a simple structure, low price, and The object of the present invention is to provide a concrete block connecting device that is easy to implement and highly reliable.

Conventionally, a connecting fitting a' as shown in Figs. 2 and 3 has been devised as a connecting device for this type of concrete block, but when the plate is thick, it is difficult to bend the ends 2 and 2a, and the price is relatively high. There was a drawback. Further, there were other problems such as the wedge piece 3 being wedged upward from the downward direction, and its use in narrow corners being restricted.

The present invention was devised to solve these problems, and embodiments thereof will be explained with reference to the drawings.

According to the merits of the project, concrete block A,
When connecting B, as shown in FIGS. 4 to 6 and 14, grooves A ₁ ,
Fit the connecting fitting a over B ₁ , insert the bolt 4b into the mounting hole 1b, tighten it to the nut 5b anchored to the concrete block B, and insert the bolt 4a through the washer 7 and the long slot hole 1a. The nut 5a is then temporarily tightened to the nut 5a anchored to the concrete block A, and the hollow part in contact with the outer part 5a' of the anchored nut 5a is
Insert crowbar b into A ₂ and insert tip 1 of long slot 1a.
By rotating in the direction of the arrow with a' as a fulcrum, concrete block B is pulled toward concrete block A and both A and B are brought into close contact with each other. Normally, when connecting concrete blocks, the positions of both are set using heavy equipment such as cranes, so there is always a gap t of 5 to 10 mm between them. Conventionally, this required a large amount of human power or skill, but according to the present invention, it is possible to easily bring the two into close contact with each other.

After the concrete blocks A and B are brought into close contact with each other in this manner, the bolt 4a inserted through the washer 7 and the long slot 1a is screwed into the nut 5a anchored to the concrete block A, and then the crowbar b is removed. By lightly inserting the wedge piece 6 between the outer part 5a' of the anchored nut 5a and the tip part 1a' of the long slot 1a, the concrete blocks A and B are brought into even stronger contact and are firmly attached. It is something that is joined.

At this time, since the mounting hole of the connecting fitting a through which the bolt 4b and the wedge piece 6 are inserted is formed in the long slot hole 1a, the concrete block B is drawn toward the concrete block A side via the connecting fitting a, and both are strongly crimped and connected.

To prevent the wedge piece 6 from being pulled out, the head notch 6a of the wedge piece 6 is firmly fixed with a bolt 4a by pressing and tightening it with a washer 7, and the concrete block A,
B is definitely connected.

Note that the washer 7 may be a normal washer, but the first
An eccentric washer as shown in Fig. 2 is preferable, and by making the long mounting slot 1a of one of the connecting fittings a into a transverse bottle-shaped hole 1a, 1a' as shown in Fig. 8, twisting can be avoided even if the plate thickness of the wedge 6 is thinned. There's nothing to do. 8 in the figure is an anchor that reinforces the nuts 5a and 5b and provides a strong anchorage.

[Brief explanation of the drawing]

Figure 1 is a slope view of concrete blocks connected according to the present invention, Figures 2 and 3 are explanatory slope views showing conventional connecting fittings, and Figure 4 is a slope view of concrete blocks A and B according to the present invention. Fig. 5 is a front view of the connected state of the main parts to which the connecting fittings are applied, Fig. 5 is a sectional view taken in the direction of the arrow in Fig. 4, Fig. 6 is a slope view of the main parts of the end parts of the concrete block joints, and Fig. 7 is a FIG. 8 is a perspective view showing another embodiment of the connection fitting, FIGS. 9 and 10 are perspective views showing an example of the nut and reinforcing fitting, and FIGS. 11 and 12 are Slope view of the bolt and eccentric washer, Figure 13 is a slope view of the wedge piece,
Figure 14 shows concrete block A related to this project.
FIG. 15 is a front view of main parts of concrete blocks A and B in a connected state according to the present invention, and FIG. 16 is a sectional view taken at - in FIG. 15. 1a, 1b... Attachment hole, 2, 2a... Bent part, 3...
Wedge piece, 4a, 4b... Bolt, 5a, 5b... Nut, 6... Wedge piece, 7... Eccentric washer, 8... Anchor,
a, a'...Connection fittings, A, B...Concrete block, _A1 , _B1 ...Concave groove, _A2 ...Cavity, b...Bar, t...Gap.

Claims (1)

[Claims for Utility Model Registration] Of the two mounting holes 1a and 1b drilled at both ends, one is a round hole 1b and the other is a connecting fitting a formed in a long groove hole 1a. B
A bolt 4b inserted into the round hole 1b and a bolt 4a inserted into the elongated hole 1a are connected to each of the concrete blocks A and B.
A concrete block connecting device characterized in that it is screwed onto nuts 5b and 5a anchored to the concrete block, and a wedge piece 6 is wedged between the nut 5a and the long slot 1a.