JPS6042134Y2 - Concrete block connection device - Google Patents

Description

[Detailed description of the invention] This invention relates to a connecting device for concrete ditch pits used in irrigation channels, etc., as shown in Fig. 1, with mounting holes 1a and 1b drilled at both ends. The curved connecting fitting a of the L-shaped locking part 3 is brought into contact with each side of the adjacent concrete blocks A and B from one side edge of the main plate 2, and is inserted into each of the mounting holes 1a and lb. The bolts 4a and 4b are connected to the nuts 5a and 5 anchored to each of the concrete blocks A and B.
b, and the bolt 4a and the L-shaped locking part 3.
In a concrete block connecting device in which a wedge piece 6 is wedged between the water-stop rubber body ρ, the main body of the water-stop rubber p is formed by protruding ridges q and r from the outside and inside of the water-stop rubber body ρ, respectively. ρ is fitted and crimped between grooves A' and B' having semicircular cross sections provided on the joining surfaces of both concrete blocks A and B, and each of the protrusions q9r is attached to both concrete blocks A.

This relates to a concrete block connecting device characterized by being crimped between opposing surfaces of B, and its purpose is to provide a concrete block connecting device that has a simple structure, is easy to construct, and is highly watertight. The point is that it provides

FIGS. 2 to 11 show an embodiment of a concrete ditch connecting device using the connecting fitting a and the wedge piece 6,
In the embodiment shown in FIGS. 2 to 4, when concrete blocks A and B are actually connected, a concave groove is bored in the side pieces of both blocks, as shown in FIGS. 5 and 6. Fit the main plate 2 of the connecting fitting a across Al and Bl, insert the bolt 4a into the waist attachment hole 1a, screw it into the nut 5a anchored to the concrete block A, and tighten the other side edge of the main plate 2. The bearing pressure piece 8 is locked to the locking piece 7 which is bent to By rotating the crowbar b, the concrete block B is drawn to the side of the concrete ditch 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 between 511rIn and low. Although it required a lot of manpower or skill, the present invention allows the two to be easily brought into close contact with each other.

In addition, 5' in the figure is an anchor that reinforces the oaks 5a and 5b and anchors strongly.

After the concrete blocks A and B are brought into close contact with each other in this way, the bolt 4b inserted into the mounting hole 1b is screwed into the oak 5b anchored to the concrete block B, and then the bolt 4a is connected to the connecting metal fitting. By inserting the wedge piece 6 between the L-shaped locking portion 3 of a and the concrete block A and B, both concrete blocks A and B are brought into even stronger contact and are firmly joined.

At this time, attaching hole 1 of connecting fitting a into which pole) 4a is inserted.
By forming a into a long slot, the concrete block B is drawn to the concrete flock A side via the connecting fitting a, and the two are strongly crimped and connected.

It is preferable that the wedge piece 6 is provided with a bolt locking recess in its tapered portion, as shown in FIG.

FIG. 8 shows another embodiment of the connecting fitting a, in which the locking piece 7 at the other end is omitted, and the attachment hole 1b at the other end is also formed into a long slot.

When using this connecting fitting a, as shown in Figs. 9 and 10, a supporting pressure piece 9 is fitted into the mounting hole 1b, and a supporting pressure piece 9 is inserted into the mounting hole 1b and the neck 5a. After the pressure piece 9 rotates as a fulcrum to bring the concrete block B into close contact with the concrete A, the wedge piece 6 is wedged between the bolt 4a and the L-shaped locking piece 3 of the connecting fitting a.

FIG. 11 shows another embodiment of the connecting fitting, in which long groove holes A2.
B! A stiffening bent piece 11 is bent on the opposite side in the middle part, and bolts 4at4b inserted into the mounting holes 1a and 1b are attached to each concrete block A.
Screw the nuts 5a and 5b anchored to B, insert the crowbar between the bolt 4a and the L-shaped locking piece 3, and rotate the L-shaped locking piece 3 as a fulcrum to release the concrete block. B
After making contact with concrete block A, bolt 4
A wedge piece 6 is wedged between a and the L-shaped locking die 3.

This proposal aims to maintain the watertightness of the joint between concrete blocks A and B in the concrete block connecting device, and as mentioned above, a semi-circular cross-section provided at the joint surface of concrete blocks A and B is used. The water stop rubber main body ρ of the water stop rubber p is fitted between the concave grooves A' and B', and the concrete block A is assembled by the connecting device.

A concave groove A' that connects B and faces the water stop rubber body ρ,
At the same time, the outer ridge q and the inner ridge r are crimped between the concrete blocks A and B to make the concrete block joint watertight. It is something.

At this time, the width of the outer protrusion q, which becomes the surface exposed part of the joint crimped between both concrete blocks A and B, is made sufficiently small, for example, 172 mm or less of the diameter of the water-stop rubber body ρ crimped to have a circular cross section. By doing so, the water stop rubber p is prevented from being easily pulled out by mischief, etc., and the outer protrusion q and the inner protrusion r are formed in the recesses of both concrete blocks A and B. Grooves A', B'
The watertightness of the joint can be more reliably maintained by being crimped between the outer and inner rain spaces adjacent to each other.

The water-stopping rubber body ρ is provided with a hollow portion S extending in its longitudinal direction, which increases the elasticity of the water-stopping rubber body ρ, and as shown in FIG. If a gap t is generated in the hollow part S, a curve backing U made of hard rubber or the like is inserted into the hollow part S, and the water stop rubber p is pressurized from inside to close the gap t'.
It is also possible to fill the gap with water to improve the water-stopping effect.

Alternatively, a water stop rubber p' having a large cross-sectional area is used only in the gap between the curves, and the backing U is fitted across the hollow parts of both water stop rubbers pwp' to bring both water stop rubbers ptP' into close contact. You can do it like this.

(See Figure 18)

[Brief explanation of the drawing]

Figure 1 is a perspective view of concrete blocks to be connected according to the present proposal, Figure 2 is a slope view showing an example of the concrete block connecting part, Figure 3 is a plan view showing its construction state, and Figure 4 is the connecting metal fittings. Figures 5 and 6 are slope views of the connecting part of the concrete block and the end of the concrete block, respectively. Figure 7 is a slope view of the wedge piece. Figure 8 is a slope view of another example of the connecting fitting. Fig. 9 is a plan view showing the state of concrete block connection work using the same connecting fitting, Fig. 10 is a view taken along arrow XX in Fig. 9, and Fig. 11 is a further implementation of the connecting fitting. FIG. 12 is a slope view showing an example of a collapsed concrete ditch to which the connecting fitting is applied, and FIGS. 13 and 14 are a slope view of a concrete ditch according to the present invention in which water-stop rubber is applied to the connecting part, respectively. A vertical cross-sectional view showing the state immediately before and after connection of an embodiment of a gutter connection device, Fig. 15 is a plan view showing the concrete block joint of the curved part, and Fig. 16 is the slope of the water stop rubber. 17 is a backing for a curve, and FIG. 18 is a perspective view showing a connected state of two types of water-stop rubber having different cross-sectional areas. 1a, 1b...Mounting hole, 2...Main plate,
3... L-shaped locking part, 4a, 4b... Bolt, 5a, 5b... Nut, 6...
Wedge piece, 9... Bearing piece, A, B... Concrete block, A', B'... Groove, p... Water stop Rubber, ρ...Water stop rubber body, q...Outer protrusion, r...Inner protrusion.

Claims (1)

[Scope of utility model registration request] From one side edge of the main plate 2, which has mounting holes 1a and lb at both ends, connect the curved connecting fitting a of the L-shaped locking part 3 to each side of the adjacent concrete blocks A and B. The bolts 4a and 4b inserted into the respective mounting holes 1a and lb are screwed into the nuts 5a and 5b anchored to each of the concrete blocks A and B, and the bolts 4a and L
In a concrete block connecting device in which a wedge piece 6 is wedged between the mold locking part 3, a stop formed by protruding ridges (I, r) from the outside and inside of the water stop rubber body ρ, respectively. The body ρ of the water rubber p is the both concrete blocks A,
Concave grooves IIA' and B' with semicircular cross sections provided on the joint surface of B
In addition to fitting and crimping between each of the above-mentioned protrusions Q? A concrete block connecting device, characterized in that the concrete block r is pressed between opposing surfaces of the concrete blocks A and B.