A shield propulsion system control method for anti-offset load

A technology of a propulsion system and a control method, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as difficulties, achieve uniform thrust, increase force, and avoid segment rupture.

Active Publication Date: 2020-06-30
HUNAN UNIV OF SCI & TECH
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  • Abstract
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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 shield propulsion system control method for anti-offset load
  • A shield propulsion system control method for anti-offset load
  • A shield propulsion system control method for anti-offset 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] like 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] like figure 2 As shown, several hydraulic cylinders are arranged in a ring, equidistant, continuous and uniform on the system, and the...

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Abstract

The invention discloses a shield propulsion system control method for eccentric load prevention, wherein the method belongs to the field of tunnel engineering technology. On the system according to the invention, a circular separator plate is fixedly connected with a shield body. Rock and soil which are cut by a cutterhead are conveyed out through a spiral conveyor. The right end of a hydraulic jack abuts against a pipe plate through a supporting boot. Furthermore the whole shield is pushed to perform frontward propulsion through a reaction force on a pipe plate. All hydraulic cylinders in thepropulsion system are uniformed arranged. According to the shield propulsion system control method, a radian theta and an azimuth phi are calculated according to geomechanics parameters in shield propulsion, thereby starting or stopping the hydraulic cylinder sets which are annularly, equidistantly and continuously arranged in the propulsion system. The control method according to the invention can adjust distribution of the hydraulic cylinders in real time, thereby setting an eccentric load problem in shield propulsion.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, in particular to a control method for a shield propulsion system for anti-eccentric load, and is a novel 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 propulsion task of the whole s...

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 邓孔书向聪蒙帮梁尹祝融曾露丁一成
Owner HUNAN UNIV OF SCI & TECH
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