JP3657666B2 - Foreign object suction work vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
More particularly, the present invention relates to a foreign matter suction work vehicle that can efficiently and quickly remove foreign matters such as water and earth and sand that have entered a pipeline such as a gas conduit.
[0002]
BACKGROUND OF THE INVENTION
As a gas conduit for supplying city gas, for example, a main pipe or a branch pipe (hereinafter referred to as a main branch pipe) having a diameter of about 300 mm to 50 mm is generally buried at a depth of about 1.2 m in a public road. In this case, water pipes are buried side by side in this branch. For this reason, in a situation where the joint part of this branch pipe is damaged due to the occurrence of an earthquake, the water pipe that runs parallel to this may burst and the vicinity may be submerged, and in such a case, from the damaged joint part, etc. Many cases have been reported in which foreign substances such as water and earth and sand enter this branch pipe and cause poor continuity of the pipeline. Even when the water pipe does not rupture, sewage and rainwater often enter the branch pipe from a joint part that is damaged together with earth and sand.
[0003]
[Problems to be solved by the invention]
In this way, when foreign matters such as water and earth and sand enter the gas conduit, there is a strong demand as an earthquake disaster recovery measure for the gas conduit to remove the foreign matter efficiently and quickly.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a foreign matter suction work vehicle that can efficiently and quickly remove foreign matters such as water and earth and sand that have entered a pipeline such as a gas conduit.
[0005]
[Means for Solving the Problems]
As a means for achieving this object, the present invention is a foreign matter suction work vehicle that sucks and removes foreign matter such as water and earth and sand that has entered a pipeline such as a gas conduit, and sucks and transfers the foreign matter from inside the pipeline. A suction hose is connected to the upper part of the suction hose, and a water separation tank that separates and collects the moisture in the foreign matter with a built-in baffle plate. A sediment collection chamber that separates and collects the sediment, a filter chamber that communicates with an upper portion of the sediment collection chamber, the downstream side of the built-in filter device communicates with the vacuum blower device, and an engine that drives the vacuum blower device. It is equipped with it.
[0006]
[Action]
In the present invention adopting such means, for example, a suction hose is connected to a pipeline such as a gas conduit having an intake port, and the vacuum blower device is driven by an engine so that water, earth and sand in the pipeline can be used. The foreign matter rides on the air flow and is sucked and transferred from the suction hose through the water separation tank into the sediment collection chamber. At that time, the foreign matter collides with the baffle plate in the water separation tank, the water contained in the foreign matter is separated and collected in the water separation tank, and the foreign matter collides with the baffle plate in the earth and sand collection chamber, Sediment is collected in the sediment collection chamber.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an overall configuration of a foreign matter suction work vehicle 1 according to an embodiment. The foreign matter suction work vehicle 1 has a structure in which a carriage 3 is connected to the rear portion of a truck 2.
[0008]
An engine (which may be a diesel engine or a gasoline engine) 4 as a power source for work and a vacuum blower device 5 driven by the engine 4 are covered with a casing 6 and mounted on the front of the loading platform 2a of the truck 2. In addition, a chamber 9 in which a filter chamber 7 communicating with the vacuum blower device 5 and a sediment collection chamber 8 communicating with the filter chamber 7 are partitioned and formed is mounted at the rear part of the loading platform 2a.
[0009]
On the other hand, a water separation tank 11 that communicates with the earth and sand collection chamber 8 in the chamber 9 via a connection hose 10 and a suction hose 12 that communicates with the water separation tank 11 are mounted on the carriage 3.
[0010]
The vacuum blower device 5 has a capacity of a maximum suction pressure of −30 cmHg (−0.4 kgf / cm ² ), and in response to this, the engine 4 has an output capable of operating the vacuum blower device 5 at the maximum suction pressure. Have.
[0011]
Here, the filter chamber 7 is partitioned and formed in the front part of the chamber 9 and accommodates a vertical three-stage filter device 7a at the center, and the downstream side of the filter device 7a is connected to the vacuum blower device 5. It communicates via the duct 5a. The earth and sand collection chamber 8 is formed at the rear portion of the chamber 9 and communicates with the lower portion of the filter chamber 7 through a communication passage 9a whose upper portion on the front side passes in the vertical direction. One end of the connecting hose 10 is connected in communication.
[0012]
The water separation tank 11 is composed of a sealed container having a capacity of about 160 liters having a pressure gauge 11a protruding on the upper surface and a drain cock 11b protruding on the rear surface. The base end portion of the suction hose 12 is detachably connected to the upper portion of the rear surface.
[0013]
The suction hose 12 is prepared in a diameter of, for example, 50 mm, 80 mm, or 150 mm according to the diameter of the work target tube, and the end of each suction hose 12 is a pipe end corresponding to the diameter of the work target pipe. A connecting jig is attached.
[0014]
Here, in the water separation tank 11, a baffle plate 13 facing the communication connection port with the base end portion of the suction hose 12 fixes the upper end to the inner wall surface of the water separation tank 11 and is inclined obliquely in side view. It is installed at. Similarly, a baffle plate 14 facing the communication connection port with one end of the connection hose 10 is installed in the earth and sand collection chamber 8 in an inclined posture obliquely viewed from the side with the upper end fixed to the inner wall surface of the chamber 9. ing. In addition, these baffle plates 13 and 14 are good also as a flap-shaped thing pivoted around the upper end and suspended.
[0015]
The baffle plates 13 and 14 are preferably made of a non-ignitable member such as rubber, soft resin, or wood, and as one embodiment, the whole is made of a soft urethane resin.
[0016]
Next, the operation of the foreign matter suction working vehicle 1 according to the embodiment configured as described above will be described in accordance with the usage example shown in FIG.
FIG. 2 shows a use example in which a main pipe 15 having a diameter of, for example, 150 mm is used as a work pipe as a gas conduit in which a joint portion or the like is damaged due to an earthquake disaster and foreign matter such as water or earth and sand has entered the inside. The main pipe 15 is cut by cutting the soil at both ends of the work target section, and the cutting portion of the main pipe 15 outside the work target section is closed by a cupping process.
[0017]
Therefore, the foreign matter suction working vehicle 1 uses a suction hose 12 having a diameter of 150 mm, and connects a pipe end connecting jig 16 attached to the tip of the suction hose 12 to one end of the work target section of the main pipe 15, A vacuum blower device 5 is driven by the engine 4. Then, the maximum suction force of −30 cmHg (−0.4 kgf / cm ² ) by the vacuum blower device 5 is supplied through the filter chamber 7, earth and sand recovery chamber 8, connection hose 10, water separation tank 11, and suction hose 12. Acting in the pipe 15, foreign matters such as water and earth and sand in the main pipe 15 are sucked into the suction hose 12 on the air flow flowing from the other end of the main pipe 15.
[0018]
The suction amount of the vacuum blower device 5 is adjusted by controlling the engine 4 while monitoring the pressure gauge 11a attached to the water separation tank 11.
[0019]
Foreign matters such as water and earth and sand sucked into the suction hose 12 are transported by an air flow of about 40 m / s, and flow into the water separation tank 11 while colliding with the baffle plate 13 to reduce the flow velocity. At that time, when the foreign matter collides with the baffle plate 13, moisture contained in the foreign matter is separated and dropped into the water separation tank 11 and collected.
[0020]
The air flow that has flowed into the water separation tank 11 together with the foreign matter and separated the water flows from the upper part of the water separation tank 11 into the earth and sand recovery chamber 8 through the connecting hose 10 and further reduces the flow velocity. At that time, the foreign matter collides with the baffle plate 14, so that the earth and sand as the foreign matter falls into the earth and sand collection chamber 8 and is collected.
[0021]
The air flow from which moisture and earth and sand are separated and collected in this way passes through the communication path 9a from the upper part of the earth and sand collecting chamber 8 and flows into the lower part of the filter chamber 7 and passes through the vertical three-stage filter device 7a. Fine dust is collected, and the vacuum blower device 5 is prevented from being worn and damaged by dust.
[0022]
Here, since the baffle plates 13 and 14 with which the foreign matter collides are both made of soft urethane resin, the baffle plates 13 and 14 are not ignited by collision with foreign matter such as earth and sand. Even when the city gas remaining in the gas is sucked together with the earth and sand, there is no risk of igniting the city gas and inducing an explosion, which is safe.
[0023]
When foreign matter such as water and earth and sand is sucked out from the main pipe 15 outside the work target section in this way, the suction load decreases and the pointer of the pressure gauge 11a attached to the water separation tank 11 changes greatly. The end of the work is confirmed by monitoring the pressure gauge 11a.
[0024]
The main pipe 15 in the work target section from which foreign matter such as water and earth and sand has been sucked out is connected to the cut ends of the main pipe 15 that has been subjected to cupping at both ends by an appropriate joint structure. After that, city gas is supplied to the repaired main 15 and the leak inspection is repeated. If a leak is found during the leak inspection, the city gas in the main 15 is drained and the leak repair is performed. However, the foreign matter suction work vehicle 1 of the embodiment has a main pipe prior to the leak repair. 15 is also used for the work of removing city gas by suction.
[0025]
【The invention's effect】
As described above, according to the present invention, a suction hose is connected to a pipeline such as a gas conduit having an intake port, and the vacuum blower device is driven by an engine so that foreign matter such as water and earth and sand in the pipeline can be removed. The air is carried and sucked and transferred from the suction hose through the water separation tank into the sediment collection chamber. At that time, the foreign matter collides with the baffle plate in the water separation tank, so that the water contained in the foreign matter is separated and water is separated. The foreign material collides with the baffle plate in the sediment collection chamber after it is collected in the separation tank, and the foreign material is collected in the sediment collection chamber, such as water or sediment that has entered the pipeline such as a gas conduit. Foreign matter can be efficiently and quickly removed by suction.
[Brief description of the drawings]
FIG. 1 is a side view showing a partial cross section of the entire configuration of a foreign matter suction working vehicle according to an embodiment of the present invention.
FIG. 2 is a side view showing, as a partial cross-section, the state of use of the foreign matter suction work vehicle according to one embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Foreign material suction work vehicle 2 Truck 3 Cargo 4 Engine 5 Vacuum blower device 6 Casing 7 Filter chamber 7a Filter device 8 Sediment collection chamber 9 Chamber 9a Communication passage 10 Connection hose 11 Water separation tank 11a Pressure gauge 11b Drain cock 12 Suction hose 13, 14 baffle plate 15 main pipe 16 pipe end connection jig

Claims (1)

A foreign matter suction work vehicle that sucks and removes foreign matter such as water and earth and sand that has entered the pipeline such as a gas conduit,
A suction hose that sucks and transfers foreign matter from the inside of the pipe, a water separation tank that is connected to the upper portion of the suction hose and separates and collects moisture in the foreign matter by a built-in baffle plate, and an upper portion of the water separation tank A sediment collection chamber that separates and collects the sediment in the foreign body by a built-in baffle plate, a filter chamber that communicates with the upper portion of the sediment collection chamber, and a downstream side of the built-in filter device communicates with the vacuum blower device; A foreign matter suction working vehicle equipped with an engine for driving the vacuum blower device.

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