JPS63189530A - Horizontal excavating and transporting device under ground - Google Patents

Abstract

PURPOSE:To raise the efficiency of horizontal excavation as well as of usual excavation by a method in which a rotary shaft with screw blade is set in a casing, and sideward excavating cutter groups are provided at intervals for the tip end portion of the screw blade. CONSTITUTION:A rotary shaft 3 with a screw blade 31 is turned to penetrate its cutting edge 32 into the ground and a casing 2 is horizontally penetrated with the shaft 3 into the ground by the propulsion of the cutting edge 32. The excavated soil is sent into the casing 2 and carried and discharged from an outlet 22 on the base side into a caisson (a). The casing 2 and the shaft 3 are sideways moved by a moving arrangement mechanism 1, together with the rotary driving of the shaft 3. Furthermore, sideward excavation is made by the sideward excavating cutter group 6 of the blade 31 and the soil is discharged into the caisson (a).

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to underground horizontal excavation and transportation, which involves horizontally excavating underground (ground, etc.) over a wide area in a substantially horizontal plane, and also transporting and discharging the excavated soil. It is related to the device.

(Conventional technology) A conventional example of underground horizontal excavation is, for example, by horizontally excavating the entire underground (ground) below the cutting edge of a caisson, which will be the foundation of a bridge installed underwater, and depositing the excavated soil into the caisson. The installation is carried out by discharging the caisson into the ground and sinking the caisson.In addition to securing the depth of horizontal excavation underground, it is necessary to perform horizontal excavation across a wide range of horizontal surfaces. , Suff 17 h-Using an excavation device equipped with a rotary shaft with blades, the rotary shaft with screw blades is rotated to advance underground, horizontally excavated by the digging force of the tip of the cutting edge, and the excavated soil is transported by the screw blades. , by horizontally excavating deep underground, and then retracting the rotary shaft with screw blades, changing the direction of horizontal excavation, and repeating the horizontal excavation, the lower side of the caisson's cutting edge is completely excavated. horizontal excavation is being carried out.

(Problems to be Solved by the Invention) The conventional underground horizontal excavation is a system in which a rotary shaft with screw blades is rotated to advance and retreat in the front and rear directions, and horizontal excavation is performed by the digging force of the cutting edge. It is actually difficult to excavate horizontally using the tip of the cutting edge and the screw blade, so it takes a lot of effort and time to excavate horizontally over a wide area in the horizontal plane, and it is extremely difficult to do so due to ground collapse. There are problems such as efficiency.

(Means for Solving Problems) The present invention is an underground horizontal excavation/transportation device developed to address the above-mentioned problems, which is supported almost horizontally by a moving arrangement mechanism and moves forward and backward in the forward and backward directions. A cylindrical casing that is moved laterally, a rotating shaft with screw blades disposed inside the casing and driven by a rotating device, and a lateral shaft disposed at intervals on the outer edge of the tip of the screw blade Equipped with a group of directional drilling cutters, it is possible to secure horizontal drilling depth underground and to perform horizontal drilling over a wide range of horizontal surfaces, significantly improving horizontal drilling performance and drilling efficiency, and solving the problems mentioned above. There is.

(Function) The rotary shaft with screw blades is rotated by a rotating device,
When the rotary shaft with screw blades is supported almost horizontally with the casing by the moving arrangement mechanism and moved forward and then moved laterally, the rotary shaft with screw blades and the casing are deeply horizontally dug into the ground by the digging force of the cutting edge. Furthermore, horizontal excavation in the lateral direction is possible due to the lateral excavation force of the lateral excavation cutter group, and the excavated soil accompanying the excavation is fed into the casing by the screw blades, transported, and discharged.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 3, and (
1) is a moving arrangement mechanism, (2) is a casing, (3) is a rotating shaft with a screw blade (31), (5) is a rotating device,
(6) is a horizontal excavation cutter group, which has a moving arrangement mechanism (
A cylindrical casing (2) that is horizontally supported by a grinding wheel (1) and moved forward and backward and laterally;
) and driven by a rotating device (5), a rotating shaft (3) with a screw blade (31), and a lateral excavation installed at intervals on the outer edge of the tip of the screw blade (31). The structure includes a cutter group (6).

The mobile placement machine 5(1) will be described in detail. It is an embodiment in which the mobile placement machine 5(1) is horizontally moved along the inner wall of the caisson (a),
Upper and lower rails (IIX) installed on the inner wall of the caisson
II), an outer frame (13) supported horizontally through guides (12) (12), an inner frame (15) supported by the outer frame and raised and lowered by a vertical slide device (14), Swivel equipment fR (1
6), and a horizontal slide device (18) for moving back and forth the casing (2) horizontally supported by the support frame (17), etc., and the moving arrangement. The mechanism (1) is disposed on the inner wall inside the caisson (a) and is moved horizontally, as well as lifting and lowering the inner frame (15) using a vertical slide device (14), and horizontally rotating and horizontally sliding using a rotating device (16). The casing (
2) is supported horizontally together with a rotating shaft (3) with a screw blade (31), is raised and lowered below the cutting edge of the caisson (a), is horizontally rotated and placed, and is moved back and forth in the front and rear directions, and further in the lateral direction. will be moved.

In detail, the casing (2) is provided at the lower part of the support frame (17) of the moving arrangement mechanism (1), and
A fluid pressure cylinder, etc., which is supported almost horizontally by the lower guide members (17a) (17b) (17b) so as to be able to slide only in the front and back direction, and is connected between the support frame (17) and the casing (2). As shown in Fig. 2, a side opening (21) is formed at the tip of the casing (2), as shown in Fig. 1. A discharge port (22) for excavated earth and sand is provided on the lower side of the base end.

To explain in detail the rotating shaft (3) with the screw blade (31), an appropriate rotation transmission mechanism is provided by a rotating device (5) (hydraulic motor, prime mover, etc.) fixed to the base end side of the casing (2). At the same time, there is a syscrew blade (
31) is attached, and the tip has the same cutting edge (
32), and furthermore, a large number of lateral excavation cutter groups (6) are disposed at intervals across a predetermined range on the outer edge of the tip of the screw blade (31), and the lateral excavation The cutter group (6) is provided at the part protruding from the casing (2) shown in FIG. 1, and also at the side opening (21) provided in the casing (2),
) moves forward and horizontally excavates deep into the ground, and horizontal excavation is made possible by the lateral excavation cutter group (6). )K is fed into the casing (2) and transported, and is discharged from the discharge port (22) to the caisson (
a) is expelled into the body. In the figure (ao) is a retaining pile protruding from the lower side of the blade of the caisson (a).

The embodiment of the present invention has the above-mentioned configuration, and to explain the operation of excavating the lower side of the cutting edge of the caisson, the mobile placement machine 411(1) is installed on the inner wall of the caisson (a). , supported by lower rails (11) (11), and a rotating shaft (3) with screw blades (31) is supported horizontally along with the casing (2) at the bottom of the moving arrangement mechanism (1).
A movement arrangement mechanism (
1) horizontal movement along the inner wall of the caisson (a), raising and lowering the inner frame (15) using the vertical slide device (14), horizontal rotation using the rotating device (16), and horizontal sliding device (
18), the casing (1
) is arranged below the cutting edge of the caisson (a) together with the rotating shaft (3) with screw blades (31), and is moved forward and backward as well as laterally, and the rotating device (5)
The rotary shaft (3) with the screw blade (31) is rotationally driven.

When the rotary shaft (3) with the screw blade (31) is driven to rotate and the distal cutting edge (32) moves forward into the ground, the digging force of the distal cutting edge (32) causes the rotary shaft (3) and the casing (2) to move forward. ) is horizontally excavated deep into the ground, and the excavated soil generated along with this is transported into the casing (2) and discharged from the base side outlet (22) into the caisson (a), where it is moved forward. ) is horizontally excavated, and when the moving arrangement mechanism (1) moves the casing (2) and the rotating shaft (3) laterally along with the rotational drive of the rotating shaft (3), the screw blade (31) A group of horizontal drilling cutters (6) arranged in a predetermined range at the outer edge of the tip
Lateral excavation is performed by the lateral excavation, and the excavated earth and sand generated by the lateral excavation is fed into the casing (2), transported, and discharged from the discharge port (22) into the caisson (-).
The lower side of the cutting edge of the caisson (a) is horizontally excavated deep underground and laterally over a wide area, and at the same time, the excavated earth and sand are discharged to form stones.

For example, as shown in Fig. 3, the lower part of the cutting edge of the caisson (,) is excavated by drilling the screw blade (3) together with the casing (2).
1) horizontal excavation (Ia) that advances a rotating shaft (3);
Lateral horizontal excavation (Ib) with subsequent lateral movement
) 1st stage drilling by K ([a, b), horizontal drilling with deeper advancement (na) followed by lateral horizontal drilling (Ilm)) 2nd stage drilling by K (Ilm, 1))
, horizontal drilling (Illa') with deeper advancement;
Subsequently, in the third stage of excavation (Illatb) by lateral horizontal excavation (It)), the entire lower side of the cutting edge of the caisson (a) is horizontally excavated.

The excavated soil (b') discharged into the caisson (,) is discharged and removed from the caisson (a) through the excavation clam shell (0) and the like inside the caisson (a).

(Effects of the Invention) Since the present invention has the above-described configuration, the rotary shaft with screw vanes is rotated by the rotating device, and the rotary shaft with screw vanes is supported horizontally with the casing by the moving arrangement machine mK, and the rotary shaft with screw vanes is moved forward. When the screw is further moved laterally, the rotary shaft with screw blades is driven deeply horizontally into the ground by the digging force of the cutting edge, and the horizontal digging force of the group of lateral excavation cutters allows it to dig laterally horizontally. The excavated earth and sand accompanying the excavation are sent into the casing by screw blades, transported, and discharged, and a sufficient horizontal excavation depth is ensured, and horizontal excavation over a wide range in the horizontal plane is continuously performed with high efficiency. , The excavated soil is effectively continuously transported and discharged, and the underground horizontal excavation performance and excavation efficiency are significantly improved.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 (A)
(B) is an enlarged side view and a side view of the front part of the casing shown in FIG. 1, and FIG. 3 is a plan view showing each stage of horizontal excavation. 1: Moving arrangement mechanism 2: Casing 3: Rotating shaft 6: Lateral drilling cutter group 31 Niscrew blade Agent Patent attorney Shige Okamoto 2 people outside Figure 3

Claims (1)

[Claims] a cylindrical casing that is supported substantially horizontally by a moving and arranging mechanism and is moved back and forth in the front and rear directions and in the lateral direction; a rotating shaft with screw blades disposed within the casing and driven by a rotating device; An underground horizontal excavation/transportation device characterized by comprising a group of horizontal excavation cutters arranged at intervals on the outer edge of the tip of a screw blade.