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A propulsion system for automatic distribution of shield anti-eccentric load

A propulsion system and automatic distribution technology, applied in mining equipment, tunnels, earthwork drilling and mining, etc., can solve problems such as difficulties, and achieve the effects of uniform thrust, enlarged geological application range, and uniform distribution characteristics

Active Publication Date: 2020-07-10
HUNAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] In the actual construction process of shield tunneling, it is usually difficult to obtain sufficiently accurate mechanical data information of construction geotechnical objects. The interaction between the shield tunnel and the ground during excavation is random. The number of hydraulic cylinders in each area is fixed, so it cannot better solve the unbalanced load phenomenon caused by the real-time geological conditions of the shield, the self-weight of the cutter head, deviation correction and direction change

Method used

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  • A propulsion system for automatic distribution of shield anti-eccentric load
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  • A propulsion system for automatic distribution of shield anti-eccentric load

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Embodiment Construction

[0021] The technical solutions of the present invention will be further described below in conjunction with examples and accompanying drawings.

[0022] Such as figure 1 As shown, it mainly includes a cutter head 1, a shield body 2, a circular partition 3, a hydraulic control valve 4, a hydraulic cylinder 5, a pressure-resistant hard rubber block on the circular partition 3, and a hydraulic reversing valve on the hydraulic cylinder 5. 4 Control expansion and contraction, the left end of the hydraulic cylinder 5 is lined with a pressure-resistant hard rubber block and the circular partition 3 is fixed, the right end is pushed on the segment (7) through the support shoe (6), and the cutter head 1 cuts rocks and soil through the spiral Conveyor 8 conveys out, and the right end of hydraulic cylinder 5 pushes on segment 7 by support shoe 6.

[0023] Such as figure 2 As shown, several hydraulic cylinders are arranged in a ring, equidistant, continuous and uniform on the system, a...

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Abstract

The invention discloses an automatic-assigned propulsion system used for shield deviated-load resisting. A circular round baffle plate is fixedly connected with a shield body, rocks and soil cut by acutter plate are delivered by a spiral delivering machine, a duct piece is jacked by the right end of a hydraulic lifting jack through a supporting boot, the whole shield is pushed to excavate forwards through the counter force on the duct piece, all hydraulic cylinders in the propulsion system are uniformly distributed. According to the shield deviated-load resisting propulsion system, data is collected through pressure sensors distributed on the exterior of the shield machine, the arc angle theta and azimuthal angle of the propulsion system are computed by a hydraulic control system to control the starting or stopping of a hydraulic cylinder group which is circularly, equidistantly and consecutively arranged in the propulsion system. By means of the method, the distribution of the hydraulic cylinders can be timely adjusted to solve the deviated-load problem of shield excavating.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a propulsion system for automatic distribution of anti-eccentric load of shield tunneling. A new controllable propulsion system applicable to various complex geological conditions. Background technique [0002] Shield tunneling is a large-scale construction machine used for tunnel excavation. It has the advantages of fast construction speed, no influence of climate and ground traffic, and one-time rapid prototyping. In recent years, the construction of subways in first- and second-tier cities in my country has basically adopted shield tunneling for tunnel construction, and shield tunneling has been widely used in the construction of various cities and engineering tunnels in China. [0003] Among the various subsystems of the shield machine, the shield machine propulsion system is the key subsystem of the shield machine, which mainly undertakes the propulsi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08E21D9/093
CPCE21D9/0621E21D9/08E21D9/093
Inventor 邓孔书丁一成曾露尹祝融蒙帮梁向聪
Owner HUNAN UNIV OF SCI & TECH
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