A Geometric Series Layout Method for Shield Propulsion System

A proportional progression, propulsion system technology, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of the disparity in rock and soil strength, and can not better adapt to the excavation needs, and achieve uniform thrust points and increase. The effect of large geological application range and improved thrust transmission characteristics

CN109578000BActive Publication Date: 2020-09-15HUNAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-09-15

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Abstract

The invention discloses an equal ratio series layout method for a shield propulsion system. A shield body, a support frame and N hydraulic cylinders are included, the shield body and the support frameare fixed, the N hydraulic cylinders are annular and are arranged on the support frame in symmetrical equal ratio series, the left ends of the hydraulic cylindersarepadded on a pressure-resistant hard rubber block and fixedly connected with the support frame,the right endsare supported on a tube piece by a support shoe, the entire shield is pushed to excavate forward by a reaction force of the tube piece, and a shield external load acts on the shield body and is transmitted to the tube piece through the hydraulic cylinders. The object of theinvention is to provide the equal ratio series layoutmethod for the shield propulsion system, the equal ratio series layoutmethod is adopted to arrange the hydraulic cylinders of the shield propulsion system, which can meet the installation requirementof uniform thrust points of the tube piece, and can solve the eccentric load caused by special geologies, variable loads and self-weight during the excavation process of the shield, a geological application range of the shield is increased, andthe rupture of the tube piece caused by the eccentric load is reduced.
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Description

technical field

[0001] The invention belongs to the technical field of tunnel engineering, in particular to a geometric series layout method for a shield propulsion system. 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 propulsion system is the key subsystem of the shield machine, which mainly undertakes the propulsion task of the entire shield machine. In the existing four-partition uniform system of the shield machine, the number of hydraulic cylind...

Examples

Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

[0030] Such as figure 1 As shown, the specific structure of the present invention is: a proportional series layout method for the shield propulsion system, including a shield body 2, a support frame 3 and N hydraulic cylinders 4, and the head end of the shield body 2 is provided with a cutter head 1. The support frame 3 is arranged inside the shield body 2 and fixedly connected to it, one end of the hydraulic cylinder 4 is lined on the pressure-resistant hard rubber block fixed to the support frame 3, and the other end is passed through the support frame. Boot 5 tops on segment 6. The whole shield bo...