JPS624621Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a vibrating pipe burying device.

In order to bury existing underground pipes in the ground, instead of the conventional cut-and-cover method, the propulsion method, in which the buried pipe itself is propelled by a propulsion cylinder installed in the starting pit, has become mainstream. A vibrating type of pipe embedding device is considered to be used.

FIG. 1 is a diagram showing a vibrating pipe burying device used in the propulsion method. In the diagram, 1 is soil, 2 is soil 1
3 is a propulsion cylinder provided in the launch pit 2; 4 is a buried pipe; the rear part of the buried pipe 4 is pushed by the propulsion cylinder 3; Reference numeral 5 denotes an excavation head provided at the top position of the buried pipe 4; numeral 6 denotes a vibration exciter installed within the excavation head 5; gives vibration to. 7 is a vibration absorber for preventing the vibration of the digging head 5 from being transmitted to the buried pipe 4; 8 is a liquid supply port provided at the tip 9 of the digging head 5; It opens on the excavation surface 10 of.

In this vibrating pipe burying device, when the vibrator 6 is activated and a low-pressure, small-flow liquid is supplied from the liquid supply port 8 to the vicinity of the excavation surface 10, the excavation head 5 vibrates, causing the excavation head 5 to vibrate near the excavation surface 10. The strength of the soil 1 decreases, and the soil 1 and the liquid supplied from the liquid supply port 8 are further agitated by vibration and become slurry.
This slurry 11 is mixed with the excavation head 5 and the soil 1 in its natural state.
The vehicle is removed into the starting pit 2 along the gap between the vehicle and the vehicle.
Therefore, the resistance force of the soil 1 near the excavation surface 10 becomes extremely small, and the excavation head 5 and buried pipe 4
Side resistance forces such as frictional force and adhesive force that act on the side surfaces of the product also become smaller. Therefore, even if the propulsion force of the propulsion cylinder 3 is small, the buried pipe 4 can be buried in the soil, thereby making it possible to bury it with high precision.

In this way, the soil 1 near the excavation surface 10 is turned into a slurry by vibration and liquid supply, and this makes it possible to bury the soil with a small amount of propulsive force with high precision. It greatly depends on the speed of slurrying 1. That is, the digging head 5
turns soil 1 near excavation surface 10 into slurry, and slurry 1
In order to propel the vehicle while excluding 1 from the starting pit 2,
When the speed of slurry formation is high, the digging head 5 can be propelled quickly. However, when the rate of slurryization is slow, even if the excavation head 5 advances the soil 1 near the excavation surface 10 without being sufficiently slurried, the resistance of the soil 1 near the excavation surface 10 is large, so the excavation speed will decrease. small. When the excavation speed decreases, the time required to propel the buried pipe 4 by the required distance becomes longer, and the amount of liquid to be supplied increases accordingly. The amount of increases. Therefore,
Problems arise, such as prolonging the construction period and increasing the amount of waste liquid to be treated.

This invention was made in order to solve the above-mentioned problems, and its purpose is to provide a vibrating pipe burying device that can quickly turn the soil near the excavation surface into slurry.

In order to achieve this purpose, in this invention, the tip of the digging head is formed into a protrusion, and a liquid supply port is opened at or near the storage point of the protruding tip, and the surface of the protruding tip is provided with a liquid supply port. Provide unevenness.

FIG. 2 is a diagram showing the digging head of the vibrating pipe burying device according to this invention. In the figure, reference numeral 12 denotes a protruding tip portion of the digging head 5, and the tip portion 12 has a conical shape. 13 is a plurality of liquid supply ports opened near the apex of the tip 12, and 14 is a radial unevenness provided on the surface of the tip 12 and the digging surface 15.

In this vibrating pipe embedding device, the liquid supply port 13
is open near the apex of the tip 12, so
The liquid supplied from the liquid supply port 13 is supplied near the top of the excavation surface 15, and the liquid permeates into the soil 1 more quickly, so that mixing of the liquid and the soil 1 can be promoted. Further, since the excavation surface 15 is provided with the unevenness 14, the mixed liquid 1 and soil can be stirred more quickly to form a slurry. As a result, it is possible to speed up the slurry formation of the soil 1 near the excavation surface 15.

In the above embodiment, the tip 12 is conical, but it may be a pyramid or the like.
In the above embodiment, the liquid supply port 13 is opened near the apex of the tip portion 12, but the liquid supply port 13 may be opened at the apex of the tip portion 12. Furthermore, in the above embodiment, the excavation surface 15 has radial irregularities 1
However, it is also possible to provide unevenness such as knurling.

As explained above, in the vibrating pipe burying device according to this invention, it is possible to increase the speed of slurrying of the soil near the excavation surface, so the excavation speed can be increased, and the burying efficiency of the buried pipe can be increased. improves. Additionally, since the soil and liquid can be mixed and stirred better, the proportion of liquid contained in the slurry is reduced, so less liquid is required to expel the same amount of soil into the launch pit. This eliminates the need for muddy water treatment. In this way, the effects of this invention are remarkable.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a vibrating pipe burying device, and FIG. 2 is a diagram showing an excavation head of the vibrating pipe burying device according to this invention. 3...Propulsion cylinder, 4...Buried pipe, 5...Drilling head, 11...Slurry, 12...Protruding tip, 13...Liquid supply port, 14...Irregularities, 15...Drilling surface.

Claims (1)

[Scope of utility model registration request] Vibrations are applied to the excavation head installed at the leading position of the buried pipe, and a low-pressure, small-flow liquid is supplied near the front of the excavation head, while a propulsive force is applied to the rear of the buried pipe to dig the buried pipe. In a vibrating pipe burying device to be buried in the soil, the tip of the digging head is formed into a protrusion, a liquid supply port is opened at or near the apex of the protruding tip, and the surface of the protruding tip is A vibrating pipe burying device characterized by having an uneven surface.