JPH0259920B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming a continuous body with holes.

The inventor of this invention filed an earlier patent application in 1983.
In No. 45879, when excavating a tunnel etc. with an excavation blade, a cylindrical space is formed by an outer cylinder and an inner cylinder behind the excavation blade, and early strength concrete, for example, is poured into this cylindrical space from near the front. We have proposed a device that constructs a continuous cylindrical body that will become the wall of a tunnel at the same time as a tunnel is excavated by supplying under pressure a material that has fluidity and hardens later. Also, special application 1986-91464
In this issue, we proposed a method to form a seamless continuous cylinder in the same way on the ground without the need for an excavation blade.
Furthermore, in Japanese Patent Application No. 148,000/1984, a method was proposed in which a continuous body having a plurality of holes was constructed in the same manner. When constructing such a continuous body with holes, when the material hardens, it may shrink and adhere to the inner cylinder, generating a resistance force and not being able to move forward easily.

The present invention solves these problems and provides a continuous body forming device with holes that can prevent material from adhering to the inner cylindrical body.

An embodiment of the present invention will be described below with reference to the drawings.

In one embodiment of the invention shown in the figures, 10 is a body that substantially closes off the front of the device of the invention. Reference numeral 12 designates an excavating blade body disposed in front of the main body, which has a rotating shaft 13 capable of spouting pressurized water as required, and this rotating shaft is rotatably supported by a bearing 15 provided at the center of the front end of the main body 10. And it is adapted to be rotated by a drive device 16. This excavating blade body has a plurality of blade parts 17 on the front side and a hole 18 adjacent to the blade parts through which excavated earth and sand pass through. It is accommodated in 20. Reference numeral 21 denotes a discharge device for discharging the earth and sand contained in the accommodation space 20 to the outside.

22 is a hollow space in which an outer cylindrical body 23 and an inner cylindrical body 2 are fixed to the main body 10 or are integrally formed.
5, and the rear is open. Inner cylinder body 25
has a front fixed part 26 fixed to the main body 10 and a rotating part 27 that rotates following the fixed part as will be described later. The front end of the hollow space 22 is closed with at least one annular end member 28, which is connected to pistons 30 of at least three, for example four, hydraulic actuators 29. It is designed to be able to move forward and backward, and can be tilted within a predetermined range in all directions.
31 is a frame fixed to the main body 10; 32
A motor is provided on the frame and rotates the gear 33, and 34 is a pair of gears rotatably supported on the frame 31. An internal gear 35 that meshes with each gear 33, 34 is provided on the inner peripheral surface of the rotating portion 27 of the inner cylinder 25. Therefore, the rotating portion 27 is adapted to be rotated in a predetermined direction. 36 is a flange formed by bending the front end of the rotating part 27 inward, and is connected to an appropriate number of trochanters 37 rotatably supported on the fixed part 26 and rotatably connected to the fixed part 26. It is designed to be sandwiched and guided between trochanters 38 which are rotatably supported by a support member 40 which can be held in the position shown by the solid line in FIG.

Reference numeral 41 designates one or more channel members made of a hose or pipe leading to a supply device (not shown) that supplies a fluid material 45 under pressure, such as early-strengthening concrete or resin mortar, as a material that can be hardened later. It is connected to the inlet 42 at the front of the hollow space 22 . As the end member 28 receives pressure due to the supply of the fluid material 45, the entire device moves forward, and this material gradually hardens, so the continuous body 4 with holes is hardened from the rear end of the hollow space 22.
6 will be exposed. In this case, rotating part 2
When 7 rotates slowly, material 4 is about to harden.
The inner surface of the holed continuum 46, which is completed without any adhesion of 5, is extremely smooth.

A continuum with holes 4 formed in this way
If it is necessary to bend the flowable material 4
5, and as shown in FIG. 1, the hydraulic operating device 29 on the side opposite to the bending side is operated to move the part of the end face member 28 connected thereto backward, thereby increasing fluidity on that side. If the material 45 is moved backward, the excavating blade 12 can be rotated in the direction shown by the arrow a to form a bent continuous body 46 with holes.

Various modifications can be made to this invention. For example, the front end surface of the hollow space 22 may be closed without using the end surface member 28. or,
When forming the continuous body 46 with holes on the ground, it is not necessary to provide the excavating blade 12. Moreover, the inner cylinder body 25
The rotating portion 27 may be used only at the location where hardening progresses the most, but the entire inner cylindrical body 25 may be rotated by supplying the fluid material 45 through the end member 28. . or,
In the present invention, when forming a continuous body with holes having a plurality of holes, the inner cylindrical body that contacts the inner circumferential surface of each hole may be configured to slowly rotate. Further, the fluid material 45 may be, for example, a granular thermoplastic synthetic resin material when supplied to the vicinity of the front end of the hollow space 22, and may be heated and melted to obtain fluidity.

As described above, in this invention, since the rotating part 27 is formed to slowly rotate at least within a predetermined range of the inner cylinder 25, when the fluid material 45 hardens, the material does not adhere to the inner cylinder 25. The continuous body 46 with holes formed in the hollow space 2 without resistance
It has the effect of being exposed from the rear of 2. Further, in this case, there is an advantage that the inner circumferential surface of the formed continuous body 46 with holes is finished smoothly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention;
Figure 2 is a sectional view taken along line AA in Figure 1 with some parts omitted, and Figure 3 is a cross-sectional view of B in Figure 1 with some parts omitted.
-B sectional view, and FIG. 4 is a CC sectional view in FIG. 10 is a main body, 12 is an excavation blade body, 20 is a housing space, 21 is an ejection device, 22 is a hollow space, 23 is an outer cylinder body, 25 is an inner cylinder body, 26 is a fixed part, 27 is a rotating part, and 28 is an end face. 29 is a hydraulic operating device;
30 is a piston, 31 is a frame, 32 is a motor, 33 is a gear, 35 is an internal gear, 41 is a flow path member, 42 is an inlet, 45 is a fluid material, and 46 is a continuous body with holes.

Claims (1)

[Claims] 1. A hollow space having an outer cylinder and at least one inner cylinder disposed inside the outer cylinder, the front end of which is closed and the rear end of which is open, and a hollow space that has fluidity near the front of the hollow space and that is later disposed within the outer cylinder. A continuous body forming device with a hole, the device having a flowable material supply means for supplying a hardenable flowable material under pressure, characterized in that the inner cylindrical body is provided with a rotation means for rotating at least a predetermined range. Continuum forming device with holes.