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Full-time propulsion system structure used in earth pressure balanced shield

A technology of propulsion system and earth pressure balance, applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of reducing the construction speed and achieve the effect of slow speed

Inactive Publication Date: 2011-06-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the shield construction is carried out in two steps, this greatly reduces the construction speed

Method used

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  • Full-time propulsion system structure used in earth pressure balanced shield
  • Full-time propulsion system structure used in earth pressure balanced shield
  • Full-time propulsion system structure used in earth pressure balanced shield

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0020] Such as figure 1 and figure 2 As shown, the structure of the full-time propulsion system in this embodiment includes 6 groups of propulsion jacks and 6 groups of braces, that is, the first group of propulsion jacks 7, the second group of propulsion jacks 18, the third group of propulsion jacks 19, and the fourth group of propulsion jacks 20 , The 5th group of propulsion jacks 17, the 6th group of propulsion jacks 16 and the 1st group of braces 6, the second group of braces 9, the third group of braces 1, the fourth group of braces 2, the fifth group of braces 4, The sixth group of braces 5; the right end of the first group of propulsion jacks 7 is fixedly connected to the shield shell 8, the left end of the first group of propulsion jacks 7 is hinged with the first group of braces 6, and the first group of braces ...

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Abstract

The invention discloses a full-time propulsion system structure used in an earth pressure balanced shield, belonging to the technical field of tunnel engineering. The invention is constituted by N groups of propulsion jacks and N groups of spreaders, wherein the right ends of each group of propulsion jacks are fixedly connected with shield casings; the left ends thereof are hinged with the corresponding group of spreaders; the spreaders support against corresponding duct pieces; the first group of spreaders support against the first block of B duct pieces; the second group of spreaders support against the first block of A duct pieces; the third group of spreaders support against the second block of A duct pieces; and according to the sequence, the N-2 group of spreaders support against the N-3 block of A duct pieces; the N-1 group of spreaders support against the second block of B duct pieces and the N group of spreaders support against the K duct pieces. The height of the spreaders in the same group is identical, and the height of the N group of spreaders is increased progressively in equal difference from the first group of spreaders to the N group of spreaders. The propulsion jack groups corresponding to the spreaders from the first group to the N group are controlled in sequence, thus realizing the full-time propulsion construction of tunneling as well as installing duct pieces of the shield, solving the problem of lower construction speed of the shield currently and being applicable to the earth pressure balanced shield.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a full-time propulsion system structure for an earth pressure balance type shield. Background technique [0002] In recent years, the earth pressure balance shield has been widely used abroad in urban subways, railways, highways, municipalities, hydropower, etc. The tunnel project is under construction. At present, the proportion of earth pressure balance shield tunneling in China is also the highest. [0003] The propulsion system is a key component of the earth pressure balance shield, which mainly undertakes the jacking task of the entire shield. The working performance of the propulsion system directly determines the engineering quality and construction speed of the tunnel. In the existing shield propulsion system, in order to reduce the complexity of non-partitioned system control, all propulsion hydraulic cylinders are usually divided into four or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06
Inventor 王立平唐晓强冯平法邓孔书陈旭
Owner TSINGHUA UNIV
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