Tunnel shield

 

(57) Abstract:

The invention relates to underground construction, namely the tunneling shields, and can be used in the construction of tunnels for various purposes in areas with different types of soil (solid, sand and so on ). The objective of the invention is to improve operational reliability and performance of the shield when working in areas with hard ground. Tunnel shield includes a housing with a sealed septum, the working body for sampling soil, panel jacks, screw for removal of the soil outside of the shield, located in a stationary housing, and the screw drive. Between the screw and the stationary housing of the auger housed movable in the axial direction of the pipe, which on the surface of the working body of the window to pass the selected soil. 1 Il.

The invention relates to the field of underground construction, namely, the tunneling shields, and can be used in the construction of tunnels for various purposes in areas with different types of soil (solid, sand and so on ).

Known design tunneling machine, comprising a housing with a partition, a working body for sampling soil soup is m to the longitudinal axis of the shield (patent RF 2005186 on CL 21D 9/06 from 30.12.93 year ).

The disadvantage of this device is the relatively low productivity and operational reliability of the tunneling shield the excavation of soil with a solids content of large stones, boulders, and so on ).

The closest technical solution to the proposed invention, the essential features is the technical solution described in the patent of the Russian Federation 2130120 on CL 21D 9/06 from 10.05.99, ("Tunneling shield complex for the construction of rectangular tunnels"), in which the tunneling shield includes a housing with a sealed septum, the working body for sampling soil, panel jacks, horizontal screw, located on the axis of the shield with scalinatella soil and screw drive.

The disadvantage of this device is the lack of reliability and performance of the excavation of soil with a solids content of large stones, boulders, and so on ). The presence in this structure of salivates, permanently installed between the ends of the augers of the working body is not sufficient for efficient crushing of solid ground, resulting in a possible stop screw with the subsequent release of his cavities from solid elementaty soils - his driving and, as a consequence, the stop in the working panel of the complex.

Task to be solved by the claimed invention is directed, is to improve operational reliability and performance of the shield when working on sites with different soil types.

The problem is solved due to the fact that in the tunneling shield, comprising a housing with a sealed septum, the working body for sampling soil, panel jacks, auger for removal of selected soil outside of the shield, located in a stationary housing, and a drive screw between the screw and the stationary housing of the auger housed movable in the axial direction of the tube on the cylindrical surface of the pipe with the side of your body for a sample of the soil is made open for the passage of the selected ground.

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant is not detected analogues characterized by signs, identical to all the essential features of the claimed invention, and the definition from the list of identified analitiekih against organized by the applicant to the technical result of the distinctive features in the claimed object, set forth in the claims. Therefore, the claimed invention meets the requirement of "novelty" in the existing legislation.

The drawing shows a General view of the tunneling shield.

Tunnel shield includes a housing 1 is sealed by a partition 2, the working body for sampling soil 3 in the form of a rotary mechanism with the actuator 4, panel jacks 5 which carries out the movement of the shield in the axial direction, the screw 6 with the actuator 7, located in a stationary housing of the screw 8. Between the body of the screw 8 and the screw 6 is placed a movable tube 9 is fixed on the cylinders 10 based on partition 2. The pipe 9 from the side of the working body 3 with holes 11.

The device operates as follows.

When moving the tunneling shield and the rotation of the working body 3 is destroyed and feed the soil in the zone of crushing And then crushed soil falls on the screw 6, which extends it beyond the tunneling shield. The pipe 9 is in the position shown in the drawing by a solid line.

In case of contact area And ground with a solid major inclusions are moving the tube 9 through Gerena soil in zone a, crushed through the window 11 in the pipe 9 are screw on and continues the removal of soil outside of the shield.

The presence movable in the axial direction of the shield pipe 9 helps protect the screw in the bottom hole zone from large inclusions of soil, while continuing the operation of the auger, to continue the sampling of soil and removing it out of the tunnel shield.

This allows to improve the performance of the Board and its operational reliability.

Tunnel shield, comprising a housing with a sealed septum, the working body for sampling soil, panel jacks, auger for removal of selected soil outside of the shield, located in a stationary housing, and a drive screw, characterized in that between the screw and the stationary housing of the auger housed movable in the axial direction of the tube on the cylindrical surface with which side of your body for a sample of the soil is made open for the passage of the selected soil.

 

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