JPH0526151Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air-type excavation and earth removal device that can simultaneously perform excavation and earth removal using a jet of compressed air. (Prior Art) Conventionally, as an earth and sand excavation tool that does not damage buried objects, there has been an excavation tool that directly utilizes the energy of compressed air, as shown in FIGS. 5a and 5b. To operate the tool, compressed air is sent from the air port 3, and when the lever 4 of the valve 2 is opened, the compressed air is blown out from the tip of the excavation pipe 1, blowing away the earth and sand and performing excavation. In addition, the 6th model is used as a tool for removing earth and sand that has been excavated and accumulated.
A commercially available wonder gun 6 is installed as a negative pressure generating device between the suction pipe A90 shown in FIGS. There was a tool that sucked earth and sand from the tip of the suction pipe A90 and discharged it from the discharge port 16. Also, as a discharge device for the accumulated earth and sand, the 7th
There is a prior art device as shown in the figure, engine 1
9 drives the vacuum pump 20, and the hopper 2
There was a device for removing the air in the hopper 3 through a filter 21, sucking the accumulated earth and sand from the tip of a suction pipe A90 connected to the hopper 21, and discharging the earth into the hopper. (Problem to be solved by the invention) The working condition of the conventional pneumatic excavation tool is
As shown in Figures b to c, it is possible to simply blow away the earth and sand, and when the earth and sand accumulates in the excavation trench as shown in Figure 5 c, the blown air escapes upward through the earth and sand and connects the excavation. was impossible. In addition, earth removal work using the conventional suction earth removal tool shown in Fig. 6a is performed using suction pipe A as shown in Fig. 2a.
If the tip of the suction pipe A90 comes into contact with the earth and sand, the air flow 18 will not occur as shown in Fig. 2b, and the negative pressure air flow 12 will deteriorate, so be sure to keep the tip of the suction pipe A90 away from the earth and sand when working. I had to. In addition, the vacuum pump suction earth removal device shown in Fig. 7 is a soil removal method that uses only negative pressure, so its soil removal capacity is small and it is difficult to remove soil other than fine-grained excavated soil. The soil removal capacity is smaller than that of the conventional method, and it is impossible to excavate and simultaneously remove soil. In addition, the equipment using the vacuum pump is large,
One drawback was that it was difficult to secure space at the construction site. The purpose of this invention is to provide a pneumatic excavating and unloading device that uses compressed air jet energy to excavate earth and sand without damaging underground objects and at the same time discharge the earth outside the excavation trench. It is about providing. (Means for Solving the Problems) In order to solve the above problems, the present invention blows compressed air at high speed from the tip of a pipe and blows it directly onto the earth and sand, excavating the surface of the earth and sand and damaging underground objects. This pneumatic excavation and removal device is designed to create an excavation groove in the earth and sand, and has an air outlet 80 at the tip of the device, and the other end 53 is connected to the high-pressure air generating means 5.
2 and the open tip 101 connected to the excavation pipe 1
and a suction pipe B having a plurality of air ports 11 near the tip 101 and having a predetermined length in the longitudinal direction.
A suction pipe A90 with a negative pressure generating means 60 attached to the rear side is formed with a dirt suction means 102 made of an elastic material and biased toward the tip. It is constructed by connecting soil pipes 15. (Function) The present invention sends compressed air in opposite directions into the inner and outer pipes of the pneumatic excavating and unloading device which has a double-pipe structure, and the inner and outer pipes, ie, the excavating pipe 1, have a diameter of the air outlet 80 at the tip. By squeezing the air, the flow velocity of which has been increased, is ejected directly onto the earth and sand, causing crushing and excavation, and at the same time, efficiently sucking up the earth and sand.
100, and accelerates by using the force of the blowing air from the wonder gun 6, which is a negative pressure generator attached to the suction pipe A90 of the outer pipe, and the discharge pipe 1
5. The soil is efficiently discharged and sent out to the outside of the trench through the discharge port 16. (Example) An example of the present invention will be described with reference to the drawings. 1a, b, and c, when compressed air is introduced from the air port 3 and the lever 4 is opened, negative pressure is generated in the suction pipe A90 by the wonder gun 6 of a commercially available negative pressure generator, and the suction pipe B100 Generates suction force at the tip of the Next, hold the handles 5 and 55 with both hands and press the air outlet 8.
When the trigger lever 50 of the valve 51 is pulled, the accelerated air 14 is ejected from the air outlet 80 and excavation is started. At the same time, excavated soil is sucked in from the tip of the suction pipe B100, and is discharged from the soil discharge port 16 through the soil discharge pipe 15 by the negative pressure generated by the wonder gun 6, which is a negative pressure generator, and the air flow. Also, by returning the lever 4, the excavation and earth removal can be easily stopped. The earth and sand suction means 102 , which urges the above-mentioned suction pipe B100 forward by the spring 13, always keeps the suction pipe tip 1 during excavation work.
01 comes into contact with the earth and sand, and as shown in Fig. 2c and Fig. 4 a and b, the blowing up earth and sand can be efficiently sucked by causing a flow of air 18 from the air opening 11. It is. (Effects of the invention) Since the present invention is configured as described above, it produces the following effects. If compressed air energy is used directly for earth and sand excavation work, it can be converted into earth and sand suction and discharge work at the same time, so it can be easily carried out with one small and lightweight device without damaging underground objects. This enables efficient excavation and earth removal work. Furthermore, as shown in Figure 2c, Figure 3b, and Figures 4a and 4b, the earth and sand suction stage 102 , which has the air intake port 11, is always in contact with the earth and sand surface under pressure from the spring 13, so that no air can be absorbed. This creates a flow 18 that wraps around the area, allowing the erupting earth and sand to be sucked in efficiently.

[Brief explanation of the drawing]

Figure 1a is a side view of an embodiment of the present invention, Figure 1b
is a sectional view of FIG. 1a, FIG. 1c is a detailed sectional view of the air outlet 80 of FIG. 1a, FIG. 2a is a functional explanatory diagram of a conventional suction pipe, and FIG. 2b is a conventional suction pipe. Fig. 2c is an explanatory diagram of the tip of the suction pipe of the present invention, Fig. 3a is an explanatory diagram showing the functions of the excavation pipe and the suction pipe, and Fig. 3b is the explanatory diagram of the excavation pipe of the present invention. 4a and 4b are explanatory diagrams of the sliding part of the suction pipe B of the present invention, 5a is a side view of a conventional pneumatic excavation tool, and 5b is a sectional view showing the soil mechanism. Fig. 5(a) is a side view showing the state of excavation work, Fig. 5(c) is an explanatory view showing the state in which the air flow escapes in Fig. 5(b), Fig. 6(a) is a side view of a conventional suction earth removal tool, Fig. 6(b) is FIG. 6c is an explanatory diagram showing the working state of FIG. 6a, and FIG. 7 is an explanatory diagram of a suction and discharge device using a conventional vacuum pump. DESCRIPTION OF SYMBOLS 1...Drilling pipe, 2...Valve, 3...Air port, 4...Lever, 5...Handle, 50...Lever, 51...Valve, 52 ...High pressure air generation means, 55...Handle, 60 ... Negative pressure generating means, 7...
... Air acceleration part, 8 ... Air groove, 80 ... Air outlet, 81 ... Support piece, 9 ... Air outlet, 90 ...
Suction pipe A, 10...Blowout air, 100...Suction pipe B, 101...Suction pipe tip, 102
... Sediment suction means, 11 ... Air port, 12 ... Negative pressure air flow, 13 ... Spring, 130 ...
Stopper, 14... Accelerated air, 15...
Discharge pipe, 16... Soil discharge port, 17... Suction power,
18...Air circulation, 19...Engine, 2
0...Vacuum pump, 21...Filter, 22...
...Eruption of excavated soil, 23...Hopper, 24...Air.

Claims (1)

[Scope of Claim for Utility Model Registration] Compressed air is ejected from the tip of a pipe at high speed and directly onto the earth and sand to excavate the surface of the earth and sand to create an excavation groove in the earth and sand without damaging underground objects. The pneumatic excavating and unloading device has an air outlet 80 at its tip, is supported by a support piece 81 in the middle, and has the other end 53 connected to a high-pressure air generating means 5.
2, an open suction pipe tip 101, and a suction pipe B100, which has a plurality of air ports 11 near the tip 101 and has a predetermined length in the longitudinal direction, in the tip direction using an elastic material. An energized earth and sand suction means 102 is provided, and a suction pipe A90 is provided with a negative pressure generating means 60 on the rear side, forming a double structure, and a discharge pipe 15 is connected to the rear of the suction pipe A90. A pneumatic excavation device featuring: