JPH047241Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a deep excavation machine, and more specifically, to a deep excavation machine used for excavating earth and sand in a deep layer under a road, which is used for repairing or replacing buried pipes under a road.

[Conventional technology]

Repair of water pipes and gas pipes buried under roads,
During replacement, the paved surface of the road is removed and the underlying soil is excavated to remove the soil up to the buried pipe. To excavate the earth and sand, workers push long iron digging rods up and down and gouge them, thereby collapsing and excavating the earth and sand.

[Problem that the invention attempts to solve]

The digging rod used in the above-mentioned digging work is moved up and down by the worker's physical strength to break up and gouge the earth and sand, and is reasonably effective for reaching shallow areas under roads. However, as the excavation work progresses and reaches deep layers, it becomes necessary to carry out the gouging work by holding the upper end of the excavation rod, which becomes very difficult and requires a great deal of force. It's also work. The present invention was devised to solve these problems, and effectively transfers the worker's weight to the tip of the digging rod, making it easier to excavate areas deep under roads. The purpose is to provide a deep drilling machine.

[Means to solve the problem]

In order to achieve its purpose, the deep drilling work machine of the present invention has a long drilling rod that is reciprocated along the length direction by the output of the installed engine, and a an outlet hole for compressed air that is connected to the formed jet hole and is formed along the axial center of the digging rod; and an outlet hole that is provided above the engine along the axial extension of the digging rod. The excavator includes an upper handle and a lower handle inserted through the excavation rod and provided below the engine, and the weight of a excavator holding the upper handle and the lower handle is applied to the excavation rod. It is characterized by

【Example】

Embodiments of this invention will be described below with reference to the attached drawings. First, in the figure, reference numeral 10 indicates a small engine, and this engine has a fuel tank 11, an air cleaner 12, a carburetor 13, a muffler 14, etc. attached to it.
A compressor 20 is arranged side by side with the air cleaner 21.
The air taken in from the engine 10 is compressed and sent to an air tank 30 attached to the lower part of the engine 10. Further, an output shaft other than that for driving the compressor 20 for extracting the output is led out from the side surface of the engine 10, and a pulley 15 is attached to this output shaft, and this pulley 15 and a counter pulley 16 A belt 17 is hung between the two. The pulley and belt are housed in a transmission case 18, and the lower end of the transmission case 18,
A sleeve 42 is placed between a casing 41 of a drive mechanism 40 provided at the lower part of the air tank 30, and a transmission shaft 43 supporting the counter pulley 16 is pivotally supported, and a cam is attached to the end of the transmission shaft 43. 4
4 is installed. A digging rod 50 is arranged along a direction perpendicular to the transmission shaft 43, and the cam 44 is mounted on a flange 51 formed at the end of the digging rod 50. Further, the digging rod 50 is pushed upward by a push spring 52 located between the flange 51 and the casing 41, so that the flange 51 is in contact with the cam 44. Further, this digging rod 50 is made of steel and has a length approximately equal to the height of an adult, and has an outlet hole 53 formed along its axis to supply compressed air to the center. The tip of this outlet hole 53 communicates with an ejection hole 54 formed at the lower end of the digging rod 50. A communication pipe 55 that guides compressed air from the air tank 30 is inserted into the outlet hole 53 of the drilling rod 50, one end of which is open, and the other end of this communication pipe 55 is connected from the air tank 30 to the unloader 3.
Air operated valve 32 opened and closed via 1
It is connected to the. The air operated valve 32 has a casing 320 as shown in cross-section in FIG.
There is a piston 311 driven by receiving pressure air supply from the unloader 31, and a valve 313 fixed to the piston rod 312 opens and closes the compressed air supply path X from the air tank 30 to the communication pipe 55. It's getting old. Further, a handle 60 is provided above the engine 10 along the axial extension of the digging rod 50, and the lower end of the handle 60 is fixed to the engine 10 with an offset from the axial extension. Further, a handle 61 forming a pair with the handle 60 is provided at the lower end of the casing 41 through which the digging rod 50 is inserted, and both the handles 60 and 61 are covered with an anti-vibration grip 62. Next, operations using the deep excavation machine of this invention will be explained. First, the compressor 20 is driven by the operation of the engine 10, and compressed air is stored in the air tank 30. Also, engine 1
With the operation of 0, the rotational torque is applied to the pulley 15,
It is transmitted to the transmission shaft 43 via the belt 17 and the counter pulley 16, and the cam 44 is rotationally driven. The rotation of the cam 44 causes the flange 51 to repeatedly be pushed down and moved upward by the push spring 52.
The digging rod 50 is moved linearly back and forth along its length. The digging rod 50 reciprocates along its length, and blows out compressed air from a blowhole 54 at its lower end to help the digging rod 50 dig out the earth and sand. The compressed air from the air tank 30 is used for blowing out the compressed air.
When the internal pressure reaches a predetermined pressure (for example, about 7 kg/cm ² ), the unloader 31 opens the supply path outlet hole 53
and is ejected from the ejection hole 54 at its lower end. The excavator handles the handles 60 and 61 with both hands, and while applying his/her weight to the excavation rod 50, gradually pushes it into the deeper part, breaking up the earth and sand with the pressure of the compressed air, and moving the top and bottom of the excavation rod 50. It collapses due to the reciprocating motion. In addition, although the above embodiment shows one equipped with a compressor, it is also possible to perform the work by receiving compressed air from a separately prepared on-vehicle compressor via a flexible tube without installing the compressor 20. (Figure 5). Fig. 6 shows a modified example of the handles 60 and 61, which are U-shaped in side view and support points A and B at the start of excavation work, and when the excavation work progresses to a deep layer. , C, and D points may be supported. Furthermore, the lower end of the drilling rod 50, in other words,
As shown in FIG. 7, the shape of the excavated end may be a machete-like shape, and an ejection hole 54 may be provided in the side surface of the machete shape.

[Effect of the idea]

As is clear from the above description, the deep drilling work machine of this invention is configured so that compressed air can be ejected from the lower end of the drilling rod while mechanically reciprocating it along its length. Therefore, the soil under the road surface can be collapsed without the worker having to move the digging rod up and down, and the soil can be loosened by a jet of compressed air, allowing efficient digging without damaging buried pipes. can. Further, since the handles are provided above and below the engine, it is easy to apply gouging force to the tip of the digging rod. Furthermore, excavation work can be easily performed in a small area, and environmental damage caused by road excavation can be kept to a small scale.

[Brief explanation of the drawing]

The attached drawings show the deep excavation work machine according to this invention. Fig. 1 is a side view, Fig. 2 is a front view, Fig. 3 is a sectional view showing the driving mechanism of the excavating rod, and Fig. 4 is an air operated machine. 5 is a side view of another embodiment, FIG. 6 is a side view of another embodiment of the handle, and FIG. 7 is a side view of another embodiment of the digging end of the digging rod. It is a diagram. 10...Engine, 11...Fuel tank, 12
...Air cleaner, 13...Carburetor, 14...
...Muffler, 15...Pulley, 16...Counter pulley, 17...Belt, 18...Transmission case, 2
0... Compressor, 21... Air cleaner, 3
0... Air tank, 31... Air operated valve, 40... Drive mechanism, 41... Casing, 4
2... Sleeve, 43... Transmission shaft, 44... Cam, 50... Drilling rod, 51... Flange, 52...
... Pressing spring, 53 ... Derivation hole, 54 ... Spout hole,
55...Communication hole.

Claims (1)

[Scope of utility model registration request] A long digging rod is reciprocated along the length direction by the output of the installed engine, and the hole is connected to the jet hole formed at the tip of the digging rod and runs along the axis of the digging rod. an outlet hole for compressed air jetting,
an upper handle provided above the engine along an axial extension line of the digging rod; and a lower handle inserted through the digging rod and provided below the engine; and a deep excavating machine, characterized in that the weight of an excavator holding the lower handle is applied to the excavating rod.