JPH0827721A - Compaction device for buried pipes - Google Patents

Abstract

(57) [Summary] [Purpose] When burying a pipe, one unit can efficiently and reliably compact backfilled soil on both sides of the burial pipe, and can narrow the width of the excavation groove. Provide a compaction device. [Structure] A support frame 2 straddling a buried pipe 5 is removably attached to a bottom plate 1a of a compacting device body 1. The left and right two compaction shoes 3 are fixed to the lower end of the support frame 2 so that the inner space C thereof is larger than the outer diameter D of the embedded pipe 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compacting device for buried pipes, which is used for compacting backfilled soil when the pipe is buried in the ground.

[0002]

2. Description of the Related Art In a construction for burying a gas conduit, a water supply and a sewer pipe, etc. in an excavation trench, it is necessary to pipe the excavation trench and then fill it with earth and sand for backfilling for compaction. If this compaction is not performed sufficiently, subsidence will occur on the ground surface, that is, the road surface after the completion of construction.

As shown in FIG. 4, in the conventional compaction of backfilled earth and sand at the time of buried piping, a sand bag 9 is arranged on the bottom 7 of the excavation groove 6 excavated by placing the earth retaining sheet pile 8. After arranging the buried pipe 5 on the upper side, the backfilled earth and sand 10 are layered and put around the buried pipe 5 in several stages, and each time, the compaction device repeats compaction to complete the refilling of the entire excavation groove 6. Was.

As a compaction device, usually, the power of a small gasoline engine is converted into a reciprocating motion by a crank and transmitted to a compaction plate through a spring, which has both effects of compaction and vibration compaction, and the proximity of a structure. Tampa, which is a compact compactor suitable for compacting relatively narrow parts such as parts and glue shoulders, taps the ground using the explosive force of a single cylinder gasoline engine, and repels the machine itself with its reaction force, A rammer suitable for compaction in a narrow space such as backfilling of a structure that solidifies the ground even when it is dropped or a commercially available compaction device called a tamping rammer is used. In either case, the power of the gasoline engine is used to apply vertical vibration or impact to the compaction shoe 3 to solidify the ground surface.

[0005]

However, when compacting backfilled soil with one conventional compacting device, as shown in FIG. 4, a narrow gap between the retaining pile 8 and the buried pipe 5 is provided. Since the compaction device had to be moved to the left and right each time the backfilled soil was stacked in A, the work was extremely troublesome and inefficient. In order to improve efficiency, it is possible to work with multiple compaction devices at the same time, but multiple workers were required.

As for the width of the excavation groove, the dome sheet pile 8 is used.
Since the compacting device body 1 is inserted between the embedding pipe 5 and the embedding pipe 5, the distance A between the embedding pipe 5 and the retaining sheet pile 8 needs to be wider than the width E of the compacting device body 1, and the width of the excavation groove 6 is D + 2E
Needed to be wider. If the space between the soil sheet pile 8 and the buried pipe 5 is narrowed, the compaction device cannot be used, and the compaction is performed manually, so the efficiency is poor and the compaction is insufficient.

The present invention solves these problems, and even with one unit, it is possible to efficiently and reliably compact backfilled soil on the left and right of the buried pipe, and further to narrow the width of the excavation groove. The purpose is to provide a device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a support frame straddling an embedded pipe is removably attached to a bottom plate of a main body of a device, and two left and right roller compacting shoes are spaced apart from each other by an inner distance from an outer diameter of the embedded pipe. A compacting device for a buried pipe, which is fixed to a lower end of a supporting frame so as to be wide.

[0009]

In the compacting device of the present invention, two compacting shoes 3 are detachably fixed to the bottom plate 1a of one compacting device main body 1 (driving part) through the support frame 2. Since the inner spacing C of the two compaction shoes 3 is made larger than the outer diameter D of the buried pipe 5 so as to straddle the buried pipe 5, the buried pipe 5 does not come into contact with the buried pipe 5 during compaction work. A uniform compaction force can be simultaneously transmitted to the right and left backfilled sands of No. 5.

Further, conventionally, the width of the excavation groove 6 had to be wider than D + 2E, but in the compacting device of the present invention, the compacting device main body 1 is located above the embedded pipe 5, and the embedded pipe 5 Since only the compaction shoe 3 needs to be arranged between the and the cleat sheet pile 8, the distance A may be set to be slightly larger than the width B of the compaction shoe 3. Normally, the width B of the compaction shoe 3 is considerably smaller than the width E of the compaction device body 1, so that the width of the excavation groove 6 can be reduced when the compaction device of the present invention is used.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a state in which a compacting work is carried out using the compacting device for a buried pipe according to the present invention, and FIG. 2 is a compaction shoe of the compacting device shown in FIG. 3 is a side view of FIG.

As shown in FIG. 1, the compacting device of the present invention has two compacting shoes 3 on the bottom plate 1a of the compacting device main body 1.
Is detachably attached via the support frame 2 with the attachment bolts 4. Inner space C between the two compaction shoes 3
Are arranged to be slightly larger than the outer diameter D of the buried pipe 5.

A support frame 2 to which a compaction shoe 3 is fixed
Needs to straddle the embedded pipe 5 so as not to come into contact with the embedded pipe 5 during the compacting work. Although FIG. 1 shows an example in which the integrated arc-shaped support frame 2 is used, two inverted L-shaped support frames 2 may be used as shown in FIG. In the structure shown in FIG. 3, the bolt holes 2a in the upper mounting portion of the inverted L-shaped support frame 2 are elongated holes, and the inner spacing C between the left and right compacting shoes 3 is variable. Therefore, in this aspect, the left and right rolling compaction shoes 3 depending on the size of the buried pipe 5.
It can be set by changing the inner spacing C of.

When the backfilling earth and sand around the buried pipe is compacted by using the compacting device of the present invention, first, the sand bag 9 or the like is placed at the center of the bottom 7 of the excavation groove 6 to remove the buried pipe 5. After arranging at a predetermined height, the first layer of backfilled earth and sand 10a is put between the buried pipe 5 and the left and right earth retaining sheet piles 8, and a compaction device is arranged to move in the longitudinal direction of the buried pipe 5. The work of simultaneously compacting the sand between the buried pipe 5 and the left and right soil retaining sheet piles 8 is performed by one compacting device. When the first layer of compaction is completed, the second layer of backfilled earth and sand is charged for compaction, and then the backfilled earth and sand is charged to the upper end of the buried pipe and the compaction device is installed in the longitudinal direction of the buried pipe 5. The reciprocating compaction operation is repeated to complete the compaction of the backfilled sand between the buried pipe 5 and the retaining sheet pile 8. afterwards,
The backfilling soil is put into the entire area of the excavation groove 6, and the entire area of the excavation groove 6 is compacted while moving the compaction device in the width direction and the longitudinal direction of the excavation groove 6.

[0016]

The compacting device for a buried pipe of the present invention is capable of compacting backfilled earth and sand between the buried pipe and the left and right soil retaining sheet piles at the same time, and is highly efficient. Further, the width of the excavation groove can be narrowed, and the amount of excavated soil and the amount of backfilled soil can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a compacting work around a buried pipe using a compacting device for a buried pipe according to the present invention.

FIG. 2 is a side view of the rolling compaction shoe portion of the compaction device for buried pipe of the present invention.

FIG. 3 is a perspective view of another example of the compaction shoe.

FIG. 4 is a diagram showing a compacting work around a buried pipe by a conventional compacting device.

[Explanation of symbols]

 1 Compaction Device Main Body 1a Bottom Plate 2 Support Frame 2a Bolt Hole 3 Rolling Shoe 4 Mounting Bolt 5 Buried Pipe 6 Excavation Groove 7 Bottom 8 Dirt Pile 9 Sandbag 10 Backfilled Sand

Claims (1)

[Claims] 1. A support frame straddling a buried pipe is removably attached to a bottom plate of a main body of a compacting device, and two left and right rolling shoes are provided at a lower end of the support frame so that an inner space between them is wider than an outer diameter of the buried pipe. A compacting device for a buried pipe, characterized by being fixed to.