JPH01315579A - Pipe press-fitting device for circular arc propulsion construction and its usage - Google Patents

Abstract

PURPOSE:To properly and efficiently perform the press-fitting of a mouth pipe and the insertion of a bent pipe by connecting the mouth pipe to the tip of the bent pipe, press-fitting the mouth pipe into the ground, fitting a drilling device at the tip of the bent pipe separated from the mouth pipe, and performing the propulsion of the bent pipe. CONSTITUTION:A pipe press-fitting device is provided with a main body frame 2 tiltably provided on a base 1, a support jack 3 supporting the main body frame 2, a chuck body 4 for chucking a pipe slidably provided on the main body frame 2, and a press-fitting jack 5 to move the chuck body 4. A mouth pipe is connected to the tip of a bent pipe to be propelled, the bent pipe is chucked by the chuck body 4 and propelled by the press-fitting jack 5 in sequence, and the mouth pipe is press-fitted into the ground. The mouth pipe is then separated from the bent pipe, a drilling device is fitted to the tip of the bent pipe, the drilling device and the bent pipe are inserted into the mouth pipe, and the bent pipe is propelled.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention sequentially propels and lays bent pipes from the ground to the ground. The present invention relates to a press-fitting device for press-fitting a mouth pipe or a curved pipe to be pushed into the ground in the so-called arc propulsion method, and a method of using the same.

[Conventional technology]

A so-called arc propulsion method is known as a construction method for propulsion-laying curved pipes in an arc shape under relatively short roads, waterways, etc. This construction method uses a drill protruding from the tip of the bent pipe (sheath pipe) to excavate underground to a diameter larger than the outer diameter of the bent pipe, and then connects the bent pipe units one after the other on the ground side. By propelling the pipe, the bent pipe is laid in an arc shape.

In this construction method, in order to smoothly discharge the soil, a pipe with a diameter larger than the propulsion curved pipe is buried to a depth of several meters from the ground, and the curved pipe is propelled into the ground through this pipe. The soil is discharged to the ground through between the mouth pipe and the bent pipe.

[Problem to be solved by the invention]

Conventionally, when burying a two-port pipe underground, a method of hitting the rear end with a vibrohammer is sometimes used, but this method cannot be used if the angle of incidence of the pipe is shallow, and in the end, the work is difficult. They have no choice but to use the inefficient method of digging and filling holes.

The present invention was made in view of such conventional problems,
It is an object of the present invention to provide a device capable of properly and efficiently press-fitting a mouth pipe and pushing the bent pipe itself into the ground, and a method of using the device.

[Means to solve the problem]

Therefore, the device of the present invention includes a main body frame that is tiltably provided on a base, a support jack that supports the main body frame, and a chuck body for a pipe chuck that is provided on the main body frame so as to be slidable in the pipe press-fitting direction. and a press-fit jack provided on the main body frame to slide the chuck body.

Furthermore, the method of the present invention relates to a method of press-fitting a mouth pipe and propelling a bent pipe using such a device, and its configuration is such that the mouth pipe is connected to the tip of the bent pipe to be propelled, and the bent pipe is moved into the pipe. The mouth pipe is pressed into the ground by primary propulsion using a press-in device, and after the mouth pipe is press-fitted, the mouth pipe and the bent pipe are separated, an excavation device is attached to the tip of the bent pipe, and the drilling device and the bent pipe are separated. is inserted into the mouth canal to propel the curved tube.

〔Example〕

FIGS. 1 and 2 show an embodiment of the present invention, and (1) is a base.

The device of the present invention includes a main body frame (2) that is tiltably provided on a base (1), a support jack (3) that supports the main body frame, and a pipe chuck that is slidably provided on the main body frame. It includes a chuck body (4) and a press-fitting jack (5) for moving the chuck body.

The main body frame (2) has a lower end pivotally mounted (6) on the base (1), and is tiltably provided on the base (1) by being supported by a support jack (3).

A pair of guide rollers (7) for guiding the tube are provided at the upper and lower parts of the main body frame (2).

Note that (8) is a support member for holding the main body frame (2) at an arbitrary angle, and the support member (8) has a plurality of elongated mounting holes (9) in its elongated direction. It is connected to the main body frame (2) by a fixing bolt (10) installed through the attachment hole (9).

The chuck body (4) chucks the inserted bent pipe, and is attached to the guide shaft (1) provided on the main body frame (2).
1) It is possible to slide along.

The press-fit jack (5) has its lower end attached to the main body frame (
2), and the rondo is connected to the chuck body (4).
The chuck body (4) which chucks the bent pipe is pulled underground.

Note that the base (1) has a base mount (1) at its lower part.
2), the position can be adjusted in the longitudinal direction using a position adjustment bolt (19).

According to the device described above, the tube guided into the device by the guide roller (7) is pulled by the press-fit jack (5) while being chucked by the chuck body (4), so that the tip end thereof is pulled by the press-fit jack (5). It is pressed into the ground.

Next, the method of using the present invention will be explained based on FIGS. 3a to 3d.

First, when press-fitting the mouth tube (13), the main body frame (2) is placed in a tilted state as shown in FIG. 3a, and the mouth tube is attached. For this reason, a dummy bent tube (14') is connected to the rear end of the mouth tube (13).
') is attached to the device (a) of the present invention, and the dummy bent pipe (14
The mouth tube (13) is held at the tip of the tube (13).

Figure 4 shows an example of the connection structure between the mouth tube (13) and the dummy curved tube (14'). (16
) is provided, and this insertion tube part (16) is inserted into the mouth tube (13).
Insert it into the end of the holder and tighten and secure it with the bolt (18).

Raise the main frame (2) from the state shown in Figure 3a, and
Set to a predetermined press-fit angle as shown in Figure b. In this state, the apparatus (a) of the present invention starts propelling the dummy curved pipe (14'), and press-fits the mouth pipe (13) held by the dummy curved pipe into the ground as shown in FIG. 3C. In addition, when connecting and burying multiple mouth pipe units, after press-fitting one mouth pipe unit as described above, insert a dummy bent pipe (14'
) from the mouth tube (13), and remove the dummy bent tube (14').
move backwards. Next, the apparatus is brought into the state shown in FIG. 3a, and the next mouth tube unit is connected to the tip of the dummy bent tube (14'). After raising the main body frame (2) as shown in Figure 3b, move the dummy bent pipe (14') forward, abut the tip of the mouth tube unit with the rear end of the preceding mouth tube, and weld the butt part. . Next, in the same manner as above, the dummy bent pipe (14') is propelled to press-fit the mouth pipe. Then, the above steps are repeated as necessary to embed a mouth tube (13) of a predetermined length.

When the embedding of the mouth tube (13) is completed as described above, the dummy bent tube (14') is removed from the mouth tube (13), and the reducer section (
15) and the insertion tube section (16) are removed. And the third
As shown in Figure d, insert the inner pipe (20) constituting the excavating device inside the dummy bent pipe (14'), attach the excavating body (17) (excavating rotation part) to the tip, and then insert the dummy bent pipe (14'). The original bent pipe (14) to be buried is connected to the rear end of the bent pipe (14'), and the excavation equipment (17) and dummy bent pipe (14'), as well as the subsequent bent pipe (14), are connected to the mouth pipe. (1
3).

Further, the pushing of the bent pipe at this time is also performed by the chuck body (4) and the press-fitting jack (5).

〔Effect of the invention〕

According to the present invention described above, the mouth pipe can be efficiently press-fitted into the ground regardless of its incident angle, and the main body can be tilted sideways, making it easy to install the pipe and insert the excavation equipment. can be done. Further, according to the method of use of the present invention, the press-fitting of the mouth pipe and the subsequent propulsion of the bent pipe can be performed efficiently with good workability by using the dummy bent pipe used for holding the mouth pipe.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a front view. Figures 3a to 3d are explanatory diagrams showing the steps of the method of the present invention step by step. FIG. 4 is a sectional view showing an example of the connection structure between the dummy bent pipe and the mouth pipe in FIG. 3. In the figure, (1) is the base, (2) is the main body frame,
(3) is the support jack, (4) is the chuck body, (5) is the press-fit jack, (6) is the pivot joint, (13) is the mouth tube, (
14) is a bent pipe, (14') is a dummy bent pipe, (17) is an excavation measure, and (A) is the device of the present invention. First cause Figure 2

Claims (2)

[Claims] (1) A main body frame that is tiltably provided on the base, a support jack that supports the main body frame, a chuck body for a pipe chuck that is provided on the main body frame so as to be slidable in the pipe press-fitting direction, and a chuck body that slides the chuck body. A pipe press-fitting device for the arc propulsion method, which consists of a press-fitting jack installed on the main body frame for movement. (2) Connect the mouth pipe to the tip of the bent pipe to be propelled, press-fit the mouth pipe into the ground by sequentially propelling the bent pipe with a pipe press-in device, and after press-fitting the mouth pipe, connect the mouth pipe and the bent pipe. A method of using the device according to claim (1), characterized in that the bent pipe is propelled by cutting it off, attaching an excavation device to the tip of the bent pipe, and inserting the excavation device and the bent pipe into the mouth pipe.