JPS62164996A - Excavator for tunnel, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is, for example, a tunnel, a water supply system, a sewer system, and other types of underground continuous holes that are excavated and at the same time a wall is opened in the hole to prevent water leakage and collapse of earth and sand, such as conventional tunnels, etc. There is no suitable method for constructing a wall in the hole at the same time as drilling a hole to prevent water leakage and collapse of earth and sand, and to obtain thrust to advance the excavator. It was difficult to excavate tunnels, etc., and required a lot of construction costs.

The inventor solved this problem by constructing a cylindrical wall on the inner circumferential surface of the hole at the same time as excavating a hole such as a tunnel to prevent water leakage and collapse of earth and sand. I have made a proposal to provide more thrust, but this is something that will not be provided.

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

In one embodiment of the invention shown in the figure, 10 is a main body constructed as described below. That is, 11 is an end plate that closes the front surface, 12 is a front plate disposed via a molded member 13 so as to form a slight interval in front of this end plate,
Reference numeral 15 denotes an outer cylindrical portion extending rearward from the peripheral edge of the end plate 11, and 16 indicates a cylindrical portion disposed inside the outer cylindrical portion at a predetermined distance from the outer cylindrical portion with a closed front end and an open rear end. An inner cylindrical part forming a space 17; 18 is a support plate having a circular shape with a peripheral edge joined to the inner cylindrical part and whose central part projects slightly rearward; 20Vi the front of the inner cylindrical part; It is a heating means provided in the section, and is composed of, for example, a heating element that generates heat by electric heat.

It has 23 digging blades and is constructed as described below. That is, 25 is a hollow rotation 441 with a flow path 26 inside.
i, 27 ij The bearing 28 provided on the end plate 11 to support the rotation axis so as to be able to change the direction of the rotation axis is configured to drive the rotation 11125 via the shear gears 30 and 31, for example, by a hydraulic motor or an electric motor. This is a drive device with a There are 32 hydraulic cylinders for direction correction, and although only one is shown in the figure, there is another one in the direction perpendicular to this, for example, so that the direction of the rotating shaft 25 can be changed arbitrarily.

33 is a rubber backing provided at the portion of the front plate 12 through which the rotating shaft 25 passes; 35 is the end face of the rotating shaft 25 and the support plate 18;
This is a thrust bearing placed between the two. Reference numeral 36 denotes a surface member of the excavating blade body 23 coupled to the front end of the rotating shaft 25, and the front surface is formed so as to protrude forward in a substantially conical shape. Reference numeral 37 denotes a number of blade portions each having a portion of ultra-hard material protruding from the outer surface of the surface member so as to extend in a substantially radial direction; and 38, a number of blade portions are formed on the surface member 36 along the blade portions. 3
7 is a passage through which the excavated Dll cuttings 90 such as earth and sand pass;
This is a storage space that accommodates 0.

Reference numeral 42 denotes a hose for feeding a material 92 in the form of powder or granules, which is small enough to be pumped and can be melted by heating, from a material source (not shown). As the material 92, for example, a powder prepared by mixing the main resin of FiZ liquid epoxy resin and a curing agent may be used, or other synthetic resins made into powder or granules may be used. Glass S powder or iron powder can also be used, and H
1! Powdered industrial waste produced during R manufacturing can also be used. Reference numeral 44 denotes a pressure feeding means such as a pump that pumps the material 92 sent from the hose 42 to the front end of the cylindrical space 17 via, for example, two pipes 46. The cement material 92 that is forced into the cylindrical space 17 is heated by the heating means 20 and rapidly melts, and after passing the heating means 20, it gradually hardens to form the cylindrical wall 94. When such a material 92 is fed into the cylindrical space 17, the main body 10 receives a forward thrust and moves forward together with the a-shaped cutting blade 23.

48 is a support plate 18.48 near the bottom within the inner cylindrical portion 16 of the main body 10. End plate 11. It is a cylindrical body that penetrates the front plate 12 and is fixed thereto. Reference numeral 50 denotes a drive unit consisting of, for example, a hydraulic motor or an electric type machine, and 52 a suction unit that extends through the cylindrical body 48 (1) and is rotatably supported by this and driven at a relatively high speed by a drive unit 50. A tube, 54 is a porous portion with many holes formed on the front side of this suction tube, and 56 is a suction tube 5.
A screw conveyor installed in the excavated material 2 is slowly rotated by a drive device 58 such as a motor that excites the excavated material 90 while vibrating it slightly to prevent it from sticking. Therefore, the excavated material 90 in the storage space 40 is sent rearward by the screw conveyor 56, and the moisture is discharged into the cylinder 48 at the porous portion 540 by the rotation of the suction isz. Reference numeral 60 denotes an opening formed near the rear of the circumferential surface of the suction cylinder 52, through which the excavated material 9o sent out by the screw conveyor 56 is connected to a vacuum hose 64 for vacuum suction by means not shown. This is a pipe, through which the cut material 90 will be discharged.

Reference numeral 66 denotes an opening formed in the cylindrical body 48 at the lower part of the porous portion 54, through which water coming out of the porous portion 54 flows into the main body IO. Reference numeral 68 denotes a suction pump, which sucks water coming out of the opening 66 through a pipe 70 and supplies it to the valve 7.
Water is drained from a hose 74 connected via 2. A pipe 76 is connected to extend rearward from the flow path 26 of the rotary shaft 25, and is connected to a hose 78 through which high-pressure water can be fed by means not shown through the electric pulp 80. A check valve 81 is provided at the tip of the flow path 26 and is automatically opened only when high-pressure water is supplied. Such high-pressure water supply is used to prevent damage to the blade part 37 when excavating rock, and to prevent damage to the blade part 37 when excavating clay areas.
This is done to prevent the product from adhering to the surface. pipe 7
A hose 82 from the suction pump 68 is connected to the joint between the suction pump 68 and the hose 78 via an electric valve 83. When the suction pump 68 sucks a large amount of water, the electric valve 72.
By closing the hose 78 and opening the electric valve 83, the water released during excavation can be sent out and used again without sending high-pressure water from the hose 78, thereby preventing ground subsidence.

Reference numeral 84 denotes a hose for feeding air from a compressor Aa (not shown), which is connected to, for example, two pipes 85 and connected to the end plate 11.
Water is discharged between the front plate 12 and the excavated portion to prevent the excavated portion from collapsing and water from piling up.

Reference numeral 86 denotes a frame, which is equipped with several hydraulic cylinders 87, and is designed to propel the initial excavation blade 23 when it rotates and starts excavation, and after the excavation has progressed to a certain extent, the pressure feeding means 44 The material 92 is forced into the cylindrical wall 9 by
K is set so that thrust can be obtained while forming a 4. Reference numeral 88 denotes trochanters arranged in multiple rows so as to initially guide the main body 10. Further, when adjusting the direction of the excavating blade 23, a television camera or the like (not shown) is placed inside the main body 10 and operated from the outside.

Further, after the cylindrical wall 94 is constructed, a strong wall surface made of reinforced concrete or the like may be constructed along the inner surface of the cylindrical wall 94, depending on necessity.

As described above, when constructing the cylindrical wall 94 on the inner cylindrical surface of a portion where a tunnel or the like has been excavated, a solid material such as powder or granules that is small enough to be pumped is used as the material 92, and this is heated by heating means. Since the cylindrical wall 94 is constructed after being heated by the material 92 and turned into a liquid, the material 92
The cylindrical wall 94 is extremely easy to handle since there is no need to maintain it at a high temperature when feeding it into the cylindrical space 17, and the cylindrical wall 94 practically prevents the collapse of the earth and sand and provides thrust to the excavator. It has the effect that it can be configured.

In addition, in this invention, heating means 20 having different glazes may be used depending on the 920 types of materials, and this heating means may be provided in other parts such as the end of the pipe 46 as long as it is near the entrance of the cylindrical space 17. There may be. Further, a cooling means may be provided in the submerged portion of the inner 81+1 cylindrical portion 16, if necessary.

FIG. 2 is a sectional view taken along the line AA in FIG. 1.

10 is the main body, 11 is an end plate, 15 is an outer cylindrical part, 16 is an inner cylindrical part, 17 is a cylindrical space, 2o is a heating means, 23 is an excavating blade body, 40 is a storage space, 42 Fi pressure feeding means, 90 92 is the excavated object, 92 is the material, and 94 is the cylindrical wall.

Claims (1)

[Claims] The excavating blade is driven to excavate and a cylindrical wall is formed on the inner peripheral surface of the excavated part, and this cylindrical wall is located at the front end of a cylindrical space provided in the main body that supports the excavating blade. It is a device configured by supplying materials to the vicinity of the cylindrical space, in which a small solid material such as powder or granules is pumped into the vicinity of the front end of the cylindrical space, heated and melted, and then solidified to form the cylindrical wall. A device for excavating tunnels, etc., characterized by: