How minichannels and head section panel of the complex hardware to implement the method

 

The invention relates to mining and can be used for shield tunnels in bulk and clay soils, including flooded. The method includes the destruction of the soil in the entire area of the face, submitting it to boot the box, screw conveyor and transport of bottom-hole zone to the place of loading for delivery to the surface. The destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space. Subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment. To implement the method head section of switchboard equipment complex contains a screw conveyor and the housing forming the enclosing shell with a closed bottom with a support and knife parts. The knife part is made in the form of a cone, made with the angle at the vertex of not more than 80and the base of which forms a PC generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone, with the formation behind the knives of free space. The cutting edge of the knives may be located ahead of the cutting edge of the base of the cone. Screw conveyor can be located on the axis of the section. The front end of the auger can be nominated for a plane of the annular edge by an amount greater than the diameter of the screw. The invention is aimed at improving the reliability of shield tunneling in complicated mining conditions. 2 S. and 3 C.p. f-crystals, 5 Il.

The invention relates primarily to underground construction, namely, to shield laying minichannels in loose, loamy, and similar soils, including flooded.

Known methods and design boards for holding (including mechanized) tunnels in such soils. These methods and structures include either the public face and the consequent destruction of its excavator or swept with a rotating cutter head on the handle body or simultaneous rotary working body with a closed bottom (see Glorikian C. H., Hodos Century A. the Tunnel boring machines and complexes. M.: Nedra, 1977, 326 S.; application No. 3-7794 (Japan) from 17.05.86, MKI 5 E 21 D 9/06, 9/12, publication 04.02.91 No. 4-195, and others).

Pnye difficulties as building character, so-and service-related mechanisms, due to extremely limited space inside the enclosing shell of the shield.

Closest to the proposed to the technical essence and the achieved result is a way of tunnels, which simultaneously produce: the destruction of the soil in the entire area of the face, submitting it to boot the box conveyor-loader and transport of bottom-hole zone to the place of loading for delivery to the surface, as well as the design of the shield with a closed bottom, a rotary working body and a screw conveyor.with. The USSR SU # 1448062 A1, class E 21 D 9/06, publ. 30.12.1988 year).

Implemented in these boards simultaneous destruction of all slaughter special working body, providing active (rotary) destruction, certainly expands the scope of a shield, but it requires a high power supply capacity (drives the rotor and the conveyor), significantly complicates the design and operation of the device. However, there is a fairly broad and common area loose, loamy, and similar soils, including flooded, for which (if any alternative method) is the complexity of the design is redundant.

The aim of the invention assessesthe drive mechanisms, remaining in the shield; increase the free space in the shield and facilitating the maintenance mechanisms of the shield; providing a closed bottom and, consequently, the possibility of the tunnel in terms of enhanced water slaughter; satisfaction guaranteed between the volume of dredged material and the amount of movement of the head section and, consequently, a substantial simplification of the control system and control the operation of the complex.

The problem is solved by the fact that when conducting tunnels proposed application of the method of conducting minichannels, in which the destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space, and subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment.

The design of the head section of switchboard equipment package contains: screw conveyor and the housing, obrazuyuschihsya, the base of which forms the perimeter of the hull cutting edge. Cone cutter parts are made with the angle at the vertex of not more than 80and the inner surface of the cone provided with spaced at an acute angle to the generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone with the formation behind the knives of free space.

Options design head section, in which the cutting edge of the knife is located ahead of the cutting edge of the cone's base screw conveyor is located on the axis section, and a front end of the auger is advanced beyond the plane of the annular edge by an amount greater than the diameter of the screw.

In Fig.1 shows a longitudinal section of the head section minisite with located an inclined conveyor.

In Fig.2 shows a longitudinal section of the head section minisite with a centrally located conveyor.

In Fig.3 and 4 show the performance with the forward of the front end of the auger conveyor.

In Fig.4 shows the performance with cutting edge knives, located ahead of the annular cutting edge of the knife part of the head section.

In Fig.5 shows a view along arrow a (see Fig.2, 3 and 4) on the front part of the shield.

Leading the t of the casing 1, forming the enclosing shell with blade 2 and the support 3 parts, screw conveyor 4 with screw 5 and the actuator 6. The knife part is made in the form of a cone 7 with the angle at the vertex of not more than 80. The base of the cone forms around the perimeter of the housing annular cutting edge 8 of the blade portion, the inner surface of the cone is equipped with knives 9 with the front inclined surfaces, which are located before the generatrix of a cone, with the education of the inclined surfaces of the knives free space 10. Number of blades 9 can be 3, 4 (see Fig.5) and more.

Knife 2 and the support 3 parts, for quite long tunnels can be connected to the hydraulic cylinders 11 to control the knife part and adjust the direction of movement of the head section when jacking.

The head section can be performed also with its own hydraulic cylinders feed blade part at the bottom (Fig.1 is not shown).

Screw conveyor 4 (see Fig.2) may be placed on the axis of the head section. This significantly improves the manufacturability of the design in the manufacture and increases the reliability.

The knives 9 (see Fig.4) to increase continuously played during the sinking of free space could the pressure to achieve effort when driving on dry and relatively dense soils (see Fig.3 and 4) presents the performance is extended to the surface 8 of the annular edge of the front end of the auger 5.

Equipment complex includes, for example, the transport unit 13 and the winch 14 (the position in Fig.1) of the transport system when the cable hauling. You can use the complex tunnelling equipment and systems pneumatic or hydraulic, and other performances of the lead section (for example, decompression chamber).

The head section is as follows.

In the process of moving the entire head section 1 (or the front part thereof, when performing a head section with its own hydraulic cylinders supply) in the face of the latter is at the same time the destruction of the soil in the entire area of the face and feeding ground in the loading area of the conveyor.

While the destruction of the soil in the zone of the boot is made by a screw 5 of conveyor 4, and the destruction of the soil in the remaining annular portion of the face and feed it to the startup window of the conveyor is accomplished by rapid cutting gaps knives 9 with the front inclined surfaces established an acute angle to the generatrix of the cone (with continuous reproduction behind the knives in the process of filing a section at the bottom for free to prayero, with additional destruction by means of the screw 5, the internal surface of the cone 7.

This advance in space) cutting slits wide enough and creation for established knives with the front inclined surfaces (behind the knives) space 10 is necessary to prevent volumetric compression of the soil occurring at nadhani cone on the left in the bottom soil, and thereby substantially reduce the amount of pressure efforts.

The work of the proposed head of the section is similar to the operation of the bulldozer with the cross blade. Moreover, due to the fact that nadivana cone 7 on the bottom (in contrast to the work of the blade is accompanied by a volumetric compression of the soil, equipment design forward of the blades 9 with the front inclined surfaces, behind which is constantly reproduced free space 10, provides no volume compression of the ground during movement of the head section at the bottom.

Accordingly, extension of the knives 9 in conjunction with their own cutting edge 12 forward increases the free space formed behind them, and increases the reliability of the device.

The extension of the front end of the auger 5 forward for plasmodiophora on dry and relatively dense soils (plane shift ground is located under an angle of 45to the direction of force when it is compressed).

The calculation of the pressure force needed to fracture the soil, made for the most challenging conditions and taking into account features of the proposed design shows that the feed force will not exceed 50 tons, which represents about 10% of the value of the pressure of efforts, develop jacking installation when jacking pipes, and significantly less effort developed by the hydraulic cylinders supply shield on the bottom, usually set in the head section of minisite during shield tunnelling.

Screw conveyor 4 in addition destroys the soil in the area loading and removing of flowing soil also contributes to the ongoing reproduction of free space 10, which enters the ground, separated from the array of knives 9 and tapered blade knife 7 part 2 parent partition panel of the complex.

Through the discharge opening of the conveyor 4, the soil is reloaded into the transport carriage 13, which, for example, by means of the winch cable 14 haulage, is delivered to the mouth of the tunnel and then to the surface.

Thus the design of the head section provides an implementation of the main features of the proposed method of carrying out minichannels and its implementation allows suwestvennom, remaining in the shield, to increase the free space in the panel, to facilitate the maintenance mechanisms of the shield, to ensure secrecy of the face, clay counterweight to the slaughter, and as a whole significantly reduce the cost of construction of the tunnel in loose, loamy, and similar soils, including flooded.

Claims

1. How minichannels using panel set of equipment, including the destruction of the soil in the entire area of the face, submitting it to boot the box, screw conveyor and transport of bottom-hole zone to the place of loading for delivery to the surface, characterized in that the destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space, and subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment.

2. Head section panel complex Oberoi knife parts, the latter of which is made in the form of a cone, the base of which forms the perimeter of the hull cutting edge, characterized in that the cone cutter parts are made with the angle at the vertex of not more than 80and the inner surface of the cone provided with spaced at an acute angle to the generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone, with the formation behind the knives of free space.

3. The head section under item 2, characterized in that the cutting edge of the knife is located ahead of the cutting edge of the base of the cone.

4. The head section under item 2 or 3, characterized in that the screw conveyor is located on the axis of the section.

5. The head section under item 2, or 3, or 4, characterized in that the front end of the auger is advanced beyond the plane of the annular edge by an amount greater than the diameter of the screw.

 

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