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Manufacturing method for end shield of built-in grout block shield machine

A manufacturing method and grouting block technology, which are used in earth-moving drilling, mining equipment, tunnels, etc.

Active Publication Date: 2013-02-27
CHINA RAILWAY SCI & IND GRP RAIL TRANSPORTATION EQUIP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relevant literature on the manufacturing technology of the tail shield of the shield machine can rarely be retrieved, which poses another challenge to the manufacture of the tail shield

Method used

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  • Manufacturing method for end shield of built-in grout block shield machine
  • Manufacturing method for end shield of built-in grout block shield machine
  • Manufacturing method for end shield of built-in grout block shield machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] production preparation

[0050] Weld an adjustable inner tube flange at the front end of the cylinder, and make the front end face down, and then weld lifting lugs and temporary lifting lugs, such as figure 1 shown.

[0051] Tailor welding of long and short pressure plates

[0052] Weld long and short pressure plates, grease pipes, etc. outside the grease tank. After the welding is completed, carry out a hydraulic test on the cavity formed by the pressure plate and the shell. The test pressure is 10 bar. It is required that the pressure drop within 30 minutes does not exceed 0.5 bar. figure 2 shown.

[0053] Install the reinforcement ring 1

[0054] After the reinforcement ring is rounded, the internal support is provided, and the reinforcement ring must be tightly attached to the cylinder with a gap of no more than 1mm. Then draw a line based on the front end of the cylinder and then weld symmetrically. Pay special attention to the fact that the position of the gro...

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Abstract

The invention belongs to the technical field of tunneling engineering and particularly relates to a manufacturing method for an end shield of a built-in grout block shield machine. According to the invention, grouted blocks are cut and built one by one via the fixing of adjustable inner tube flanges on a winded whole shell, thus the size precision of the end shield is well ensured, the product quality and the efficiency are improved. As for the shell blanking accuracy, the accuracy is greatly improved as compared with that of the traditional method of calculating key point by using the metal plate feeding function of software, so that the method is beneficial for achieving the conical tube mode of the end shield. Compared with the method of winding the shell section by section and then welding with the grouted blocks, the novel integral-cutting and gradual-embedding form ensures product quality better, and is more stable and more reliable. The plate is wound for one time according to the novel method, however, when the sectional winding method is adopted, the plate winding efficiency will be increased, the manufacturing cost of products is improved, and the production efficiency is reduced,.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a method for manufacturing a tail shield of an embedded grouting block shield machine. Background technique [0002] The tail shield in the shield machine plays an important role in protecting the segment assembly and preventing the water in the formation from pouring into the tunnel during the excavation process. The traditional tail shield design of the shield machine is usually that the grouting and grease injection functional pipeline is attached to the tail shield shell externally or internally. Although the manufacturing difficulty is relatively low, the disadvantages are obvious during the use of the shield machine. The disadvantage of the grouting pipe is that the grouting gap behind the wall is large, which increases the amount of grouting behind the wall, and the settlement is difficult to control; the disadvantage of the internally attached grouting pipe is ...

Claims

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Application Information

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IPC IPC(8): E21D9/06
Inventor 李桐李玲刘继平盛宝安童彪陈彦林刘洋宋黎王承海王媛张天雄
Owner CHINA RAILWAY SCI & IND GRP RAIL TRANSPORTATION EQUIP LIMITED
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