JPS6361474B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pit excavation device used in a shield propulsion method applied to manhole installation and underground burial of gas pipes, water pipes, sewerage pipes, electricity, telephone cables, etc. .

[Conventional technology]

Conventionally, in the above propulsion method, starting, reaching, and forming manhole pits have been carried out by driving steel sheet piles,
A method using liner plates has been adopted.

[Problems to be solved by the invention] However, such a method for forming a pit requires the installation of shoring, backfilling inside and outside of the liner plate, and injection of grout after driving the steel sheet pile, resulting in poor work efficiency and uneconomical operation. Moreover, there were also safety issues.
In order to solve the above problem, the applicant first filed a patent application
59-118587, it is possible to form a vertical hole by burying a long casing instead of using the above-mentioned steel sheet piles or liner plates,
In addition, a small-diameter mechanical propulsion method using this casing as a reaction force generator was disclosed in Japanese Patent Application No. 118587/1983.

However, the base machine disclosed in the same application could only form a small-diameter vertical hole, that is, a maximum of 1500 mm, and was unable to form a large-diameter vertical hole required for burying a large humid pipe.

Furthermore, since the casing tube remained on the ground after the work was completed, the main body of the tubing machine had to be lifted and removed.

The present invention enables easy, quick and safe excavation of large-diameter vertical holes, the easy division and removal of the tubing machine, and the ability to quickly move from one construction site to another, improving construction efficiency. The purpose is to provide a vertical hole drilling device that can

[Means for solving problems]

In order to solve the above problems, in the present invention, a shaft drilling device is constructed by connecting a tubing machine main body containing a casing tube for shaft drilling with a plurality of divided bodies each having a casing tube band on the inner surface. Moreover, it is constructed by attaching to the same main body a swinging mechanism for swinging the casing tube and a press-fit/pull-out mechanism for press-fitting the casing tube into the ground and pulling it out.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the accompanying drawings.

FIG. 1 is a front view of a pit drilling device according to the present invention, FIG. 2 is a plan view thereof, FIGS. 3 and 4 are explanatory diagrams of the order in which the pit drilling device is installed on the ground, and FIG. and FIG. 6 are a front view and a plan view of the divided tubing machine main body.

In FIGS. 1 and 2, 1 is a tubing machine main body, and the main body 1 can house therein a casing tube 2 made of a large-diameter steel pipe.

In this embodiment, the tubing machine main body 1 is constructed by connecting front and rear divided bodies 30 and 31, which are divided bodies each having a semicircular casing tube band 16 inside, using a cylinder 17 for connecting the divided bodies. It is constructed by connecting them in a separable manner.

As is clear from FIGS. 2 and 3, the divided body 3
0 consists of the lower frame 8 and the upper frame 14, and the divided body 31 consists of the lower frame 9 and the lower frame 1.
It consists of 5.

The divided body connecting cylinder 17 has its base attached to the lower and upper frames 9 and 15 of the divided body 31, and its tips are removably engaged with connecting pins 32 attached to the lower and upper frames 8 and 14 of the divided body 30. It is possible to

With this configuration, the divided body connecting cylinder 1
7 is engaged with the connecting pin 32 and then operated, the casing tube 2 is connected to the casing tube band 16.
It will be surrounded and held by.

Also, in Figures 3 and 4, 18, 19
In order to strengthen the connection between the divided bodies 30 and 31, the lower and upper frames 8, 9, 1
These are a connecting bracket and a connecting bolt that are attached to the joint surfaces of parts 4 and 15.

Further, in FIG. 2, reference numeral 5 denotes a traveling wheel attached to the lower part of the divided body 31, which is used when the shaft excavating device 1 is moved by the trailer 12 disposed in front of the tubing machine main body 1, and when excavating a shaft. It is retracted to the dotted line storage position as shown in FIG.

Further, in FIGS. 5 and 6, reference numerals 6 and 7 designate wheels that are detachably attached to the lower frames 8 and 9 in order to facilitate the division and connection of the divided bodies 30 and 31.

Further, 33 is a trailer connecting bracket that is attached to the front part of the tubing machine main body 1 and has a through hole 34, into which an engaging piece 35 rotatably provided at the rear of the trailer 12 is fitted. By doing so, the tubing machine main body 1 can be detachably connected to the trailer 12.

Furthermore, referring to other constituent elements in this embodiment, 3 is the tubing machine main body 1
4 is a press-fitting/pull-out mechanism (hydraulic cylinder in this embodiment) that lifts and lowers the casing tube 16 relative to the main body and press-fits it into the ground 20 and pulls it out; This is a swinging mechanism (hydraulic cylinder in this embodiment) that is attached to the tubing machine body 1 and reciprocates the casing tube 16 in the circumferential direction.

Further, 10 and 11 are outriggers attached to the front and rear parts of the divided bodies 30 and 31, and support the tubing machine main body 1 so as to be able to move toward and away from the ground 20 during excavation of a vertical hole.

Note that 13 is a hydraulic unit mounted on the divided body 31.

In addition, in the above embodiment, the casing tube 16
Although the casing tube 16 provided in each divided body is formed from two divided structural pieces corresponding to the number of divided bodies 30 and 31, it is possible to form the casing tube 16 from three or more structural pieces, for example, by further subdividing the casing tube 16 provided in each divided body. It is also possible to further facilitate the enclosing and holding operations of the casing tube 2.

Next, excavation work using the pit excavation device having the above configuration will be explained with reference to FIGS. 1 to 6.

The pit drilling device is normally stored in a warehouse or the like in the state shown in FIG. 4 when not in use. however,
Naturally, the illustrated casing tube 2 is not installed.

When moving, as shown in FIG. 3, the tubing machine main body 1 is separated from the ground 20 by driving the outriggers 10 and 11, the wheels 5 stored at the rear are lowered, and the wheels 6 are attached to the split body 30. Install. Thereafter, it is connected to a trailer 12 as shown in FIGS. 1 and 2.

When the outriggers 10, 11 are retracted, the weight of the device is applied to the wheels 5 and the trailer 12.

By driving the trailer 12, it moves to the excavation site and stops at a set location.

Next, the outriggers 10 and 11 are advanced again, the wheels 5 are retracted, and the trailer 12 is removed.

Next, the outriggers 10 and 11 are moved back to set the tubing machine main body 1 on the ground, and fine adjustments are made using the outriggers 10 and 11.

Lower the casing tube 2 and set it inside the tubing machine main body 1. Next, the casing tube band 16 is tightened, and the casing tube 2 is press-fitted into the ground while swinging.

After that, while the soil inside the casing tube 2 is removed manually or mechanically, the press-fitting/extracting mechanism 3 and the swinging mechanism 4 are operated again to force-fit the casing tube 2 into the ground, effectively making the vertical hole. to drill.

The excavation work is completed when the casing tube 2 has been dug down to a predetermined depth.

After the excavation work is completed, move the tube machine body 1 to another location and remove the casing tube band 1.
Loosen 6.

Next, the outriggers 10 and 11 are operated again to separate the tubing machine body 1 from the ground 20, and the stored rear wheels 5 are lowered and set.
Attach the wheels 6 and 7, and also attach the trailer 12. The outriggers 10 and 11 are advanced to support the tubing machine main body 1 on the ground, the connecting bracket 18 is removed, and the divided body connecting cylinder 17 is driven to complete the tubing machine main body 1.
is divided into divided bodies 30 and 31. After dividing, remove the divided bodies 30 and 31 from the casing tube 2,
Connect again at another location. After that, trailer 12
and move to the next excavation location.

〔Effect of the invention〕

As described above, the present invention can achieve the following effects.

(b) Large-diameter vertical holes can be easily, quickly, inexpensively, and safely excavated.

By connecting to a trailer, the tubing machine body can be quickly moved from one construction site to another, improving work efficiency.

When removing the main body of the casing tube, the main body can be separated, so even if the casing tube becomes too high, it can be easily assembled and dismantled.

Since the Nitrailer is not needed once the tubing machine is set up, it can be used for other tasks as well.

[Brief explanation of drawings]

FIG. 1 is a front view of a mobile pit drilling device according to the present invention, FIG. 2 is a plan view thereof, and FIGS. 3 and 4 are explanatory diagrams of the order in which the mobile pit drilling device touches the ground,
FIGS. 5 and 6 are a front view and a plan view of the vertical hole drilling apparatus in a divided state. In the figure, 1: tubing machine main body, 2: casing tube, 3: press-fitting and extraction mechanism, 4: rocking mechanism, 5, 6, 7: wheels, 8, 9: lower frame, 10, 11: outrigger, 12 : Trailer, 13: Hydraulic unit, 14, 15: Upper frame, 16: Casing tube band, 17:
Cylinder for connecting divided bodies, 18: Bracket for connecting, 19: Bolt for connecting, 20: Ground, 30: Divided body, 31: Divided body, 32: Connecting pin, 33: Bracket for connecting trailer, 34: Through hole, 35 : Engagement piece.

Claims (1)

[Scope of Claims] 1. A tubing machine main body incorporating a casing tube for vertical hole drilling is constructed by connecting a plurality of divided bodies each having a casing tube band on the inner surface, and the main body is provided with a casing tube band. A vertical hole drilling device, characterized in that it is equipped with a swinging mechanism that swings the casing tube, and a press-fit/pull-out mechanism that press-fits the casing tube into the ground and pulls it out. 2. A tubing machine body containing a casing tube for vertical hole drilling is constructed by connecting a plurality of divided bodies each having a casing tube band on the inner surface, and the same body is provided with a swinging mechanism for swinging the casing tube. A vertical hole drilling device characterized by being equipped with a press-fitting/pull-out mechanism for press-fitting the casing tube into the ground and pulling it out, and further having the tubing machine main body detachably connected to a trailer.