JPS607157B2 - Hume pipe joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has a structure in which a large number of blocks are inserted into each joint of a Hume pipe used for rainwater drainage, agricultural culverts, water collection pipes, etc. to prevent dislodgement between each joint. This relates to the joint structure of the Hume tube.

Conventionally, such fume pipes were connected by inserting each fume pipe one after another through rubber gaskets, etc. However, due to the deterioration of the rubber gaskets due to long-term use, it became difficult to maintain watertightness, and it was difficult to maintain watertightness from each joint into the fume pipe. Mud and other substances were flowing into the final treatment plant, causing an increase in sludge.

Therefore, it may be possible to use stainless steel strips for the joints, but although stainless steel is generally known to have excellent corrosion resistance, when used on farmland, it may be susceptible to weak acids caused by nitrates in chemical fertilizers. Aqueous solutions tend to corrode to some extent, and due to such corrosion, heavy metals, chromium, etc. in the composition of stainless steel may be leached out, contaminating the soil and harming the human body through agricultural products. . Furthermore, in the conventional method of joining Hume pipes, no consideration is given to preventing the Hume pipe from coming off due to tension in the longitudinal direction, and this may result in problems such as when the Hume pipe is buried in sloping ground or in soft ground. The result was that each rear joint part could easily come off due to the loosening of the ground.

In addition, when replacing a buried Hume tube if it is damaged for some reason, each Hume tube is connected by insertion, so it is necessary to dig up to the front and back positions of the damaged Hume tube and move the Hume tubes laterally one by one. Therefore, the damaged Hume tube cannot be removed unless the joint of the damaged Hume tube is released, which has disadvantages such as requiring a great deal of labor to replace the damaged part.

In view of these drawbacks, the present invention provides a structure in which a removable block is inserted into each joint of the Hume tubes to firmly connect the Hume tubes, and also to facilitate the replacement of a damaged Hume tube at the joints of the Hume tubes. An example of carrying out the present invention will be described below based on the drawings, with the aim of solving the above-mentioned drawbacks by forming a replacement stepped part or by butting the joint parts. A groove 2 is formed on the outer periphery of one end of the fume tube 1, and the other end has a large diameter so that the tip of another fume tube 1' can be filled with iron, and a joint 3 with the other fume tube 1 is formed on the inner periphery. A joining step part 5 having a groove 4 for joining and fixing in the joint, and a replacement step part 6 used when replacing the fume tube 1' joined to the front side of the joining step part 5 are formed.

The inner diameter of the replacement step 6 is slightly larger than the outer periphery of the tip of the other fume tube 1', and the inside diameter is also slightly larger than the joining step 5. Reference numeral 7 denotes a joint village for fitting the respective Hume pipes 1, 1', etc., and the joint member 7 is equally divided into a pillow block 8 slightly smaller than approximately half the circumference of the lower part and a large number of upper parts. Block bodies 9, 9'...

・The cross section of both is such that it can completely fill the gap between the inner periphery of the joining step 5 formed when the Hume tubes 1 and 1' are joined and the tip of the Hume tube 1'. It has a diameter and length corresponding to the gap, and protrusions 10, 11, 11' that can fit into the groove 4 on the inner periphery of the joining step 5 and the groove 2' on the outer periphery of the tip of the Hume tube 1'. Also, the rear end portion has an abutting surface 12 that comes into contact with the end surface of the fume tube 1. It is preferable that the pillow block 8 is made of concrete or the blocks 9, 9'... are made of synthetic resin from the viewpoint of durability and non-contamination. Economical. Next, to explain the joining state of the Hume tubes 1, 1'......, first, the pillow block 8 is placed in the joining step 5 on the inner periphery of the joining part 3 of the Hume pipe 1, and then the other parts to be joined are The distal end of the fume pipe 1' is inserted into the joint part 3 in such a manner that it is inserted into the inner periphery of the pillow block 8, and then the joint part 5 and the fume pipe 1' are connected.
From the gap in the upper half of the outer circumference of the tip of the block body 9,9'
. . . are inserted one after another and piled up while inserting iron into the joining step 5, and a block body 9 is inserted in the gap at the last place.
, 9'... cannot be inserted, so the outer shape is different from other block bodies 9, 9'... as shown in Fig. 5.
..., but a notch 13 is formed in the center so that the protrusion 11 does not get in the way during insertion, and a caulking block 14 that can be contracted vertically by vertical pressure is prepared.
This is inserted and then fixed by pouring acid 15 into the notch 13.

Therefore, the Hume pipes 1, 1' are the protrusions 10 of the joining member 7, which is composed of the pillow block 8 and the block bodies 9, 9'...
, 11, 11', . . . are firmly joined by iron-filled. Incidentally, screw punches 16, 16', . . ., each having a through hole are screwed into the supporting surface 12 of each block body 9, 9', and each screw punch 16,716', .・By inserting the wire 17 into the block bodies 9, 9', which are used for joining one place, you can put together the required number of blocks and prevent them from being lost.Also, when replacing the damaged Hume tube 1', Block bodies 9, 9' at both ends of the fume pipe 1'...
If you remove the
can be moved into the replacement stepped section 6, and the joint 3' with the Hume pipe 1' can be easily removed. Its workability is very easy.

According to the joint structure of the Hume pipes 1, 1', etc., various effects can be achieved such as ease of burial work, watertightness and earthquake resistance at the joint, and ease of replacing damaged parts. I can do it.

In short, the present invention forms a groove 2 on the outer periphery of the tip of the fume tube 1, a groove 4 on the inner periphery of the end, and a large-diameter joint step 5 into which the tip of another fume tube 1' can be inserted. At the same time, another fume pipe 1 is placed in front of the joint step 5.
Since the replacement step 6 is formed to have an inner diameter slightly larger than the outer circumference of the tip of the pipe 1 and slightly larger than the inside diameter of the joining step 5, the joining member 7 can be replaced when replacing the damaged Hume tube 1.
After removing the one of the fume tubes 1, move the tip of the fume tube 1' to be replaced into the replacement step 6 to release the joined state of the joint 3' at the other end of the fume tube 1' to be replaced. Therefore, during replacement work, only the work of digging up the damaged part of the Hume pipe 1' is required, and the other Hume pipes 1 connected before and after the Hume pipe 1' need not be moved in any way. The inner periphery of the joining step 5 of one Hume pipe 1 formed by joining the front and rear Hume pipes 1, 1' and the other The connecting member 7 has a length and a length corresponding to the gap between the tip of the Hume pipe 1' and the protrusions 10, 11, 11', etc. that are iron-fitted to the grooves 2 and 4. The joint village 7 has a pillow block 8 around the lower half of the circumference and block bodies 9, 9' divided into a plurality of blocks around the upper half of the circumference.
......, so the front and rear Hume tubes 1,
1', the pillow block 8 and the protrusion 1 are sequentially attached to the joint part 3.
Protrusions 10, 11, 11', etc. relative to the grooves 2, 4 are formed by iron-inserting the protrusions 10, 11, 11',...
The front and rear Hume pipes 1, 1' can be reliably joined by the iron-coupling action of .
...Maintaining watertightness between spaces, preventing joints from coming off due to vibrations or loosening of the ground, ease of burial work,
Various effects can be achieved, such as ease of replacement of damaged parts, and if the joint member 7 is made of synthetic resin, durability is improved, and the joint member 7 does not deteriorate even after many years of use. Moreover, when used in agricultural fields, it has great practical effects, such as not contaminating the soil unlike metal products.

[Brief explanation of the drawing]

The figure shows an example of the implementation of the present invention, and FIG.
FIG. 2 is a cross-sectional view of the same as the above, FIG. 3 is a perspective view of the joining member as above, FIG. 4 is a perspective view of the block body as above, and FIG. 5 is a perspective view of the caulking block as above. It is a diagram. 1, 1... Hume tube, 3, 3'... Junction part.
5...Joining step part, 6...Replacement step part, 7...
・Joining member, 8...Pillow block "9,9'...
...Flock font. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A groove 2 is formed on the outer periphery of the tip of the hume canal, and a groove 4 is formed on the inner periphery of the other end, and a large-diameter joint step part into which the tip of another hume canal can be inserted is formed. At the front position, a replacement stepped portion having an inner diameter slightly larger than the outer periphery of the tip of the other hume tubes and slightly wider than the width of the joint step portion was formed, and the front and rear hume tubes 1 and 1' were joined together. A joining member is provided, which has a width and length corresponding to the gap between the distal end of one of the hume tubes 1 formed in the above-mentioned state, and has a protrusion that fits into the grooves 2 and 4. A joint structure for a hume tube, characterized in that it is composed of a pillow block approximately half the circumference of the lower part and a block body divided into many parts approximately half the circumference of the upper part.