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Active mixing device, installation method and mixing method of soil chamber of earth pressure balance shield

An earth pressure balance shield and mixing device technology, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve problems such as mud cakes, prevent mud cakes, ensure the progress of shield construction, and improve fluidity. Effect

Pending Publication Date: 2019-11-26
POWERCHINA RAILWAY CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, despite these methods, the phenomenon of mud cakes still occurs from time to time

Method used

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  • Active mixing device, installation method and mixing method of soil chamber of earth pressure balance shield
  • Active mixing device, installation method and mixing method of soil chamber of earth pressure balance shield
  • Active mixing device, installation method and mixing method of soil chamber of earth pressure balance shield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 with image 3 As shown, the earth pressure balance shield soil chamber 6 is an active stirring device. The rotary joint of the earth pressure balance shield includes a fixed part 12 and a rotating part 13. The rotary joint is generally arranged in the middle of the area formed by the cutter head driving part 5. The active stirring device It includes a stirring drive mechanism and a stirring wing 9 connected with the stirring drive mechanism. The stirring wing 9 is used to stir the soil chamber 6 of the earth pressure balance shield; the rotating part 13 is set as a hollow structure; the stirring driving mechanism passes through the hollow rotating part 13 And the cutter head partition 27 and stretches into the soil cabin 6; the stirring wing 9 is assembled on the stirring drive mechanism in the soil cabin 6.

[0033] The above arrangement involves improvements in at least two aspects. On the one hand, the rotating part of the rotary joint is set as a h...

Embodiment 2

[0035] This embodiment is similar to the first embodiment, the difference is that the stirring drive mechanism includes a motor, and the motor is used to drive the stirring blade 9 to rotate. Driven by a more common motor, the source of power is more extensive and more selective.

[0036] Such as figure 2 with Figure 4 As shown, the stirring drive mechanism includes a frequency conversion motor 17, a speed reducer 16 and a drive shaft; the speed reducer 16 is connected with the frequency conversion motor 17, and the speed reducer 16 is connected with the transmission shaft through a shaft coupling 18; the transmission shaft drives the stirring blade 9 to rotate; the frequency conversion motor 17 and the mounting bracket of speed reducer 16 are fixed with shield body 2. The frequency conversion motor 17 is adopted, which can rotate in two directions, stepless speed regulation, has strong adaptability, and can save energy to a certain extent.

[0037] The transmission shaft...

Embodiment 3

[0043]The stirring wing 9 is made of a circular tube, and the end of the circular tube is set as a circular platform, and the end is equivalent to a buffer to avoid damage after being subjected to strong force and prolong the service life.

[0044] Two groups of stirring wings 9 are arranged before and after, and the two groups of stirring wings 9 are arranged side by side on the transmission shaft (or the second transmission shaft 7). The length is longer, such as 20cm long.

[0045] A group of stirring wings 9 close to the cutter head 1 have the same length and four stirring wings 9 are evenly installed in the circumferential direction of the transmission shaft; a group of stirring wings 9 close to the frequency conversion motor 17 have the same length and four stirring wings are evenly installed in the circumferential direction of the transmission shaft Stirring wing9. Set 4, adjacent two stirring wings 9 are 90 °, and stirring wings 9 are denser, strengthen stirring effec...

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PUM

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Abstract

The invention discloses an active mixing device, an installation method and a mixing method of an soil chamber of an earth pressure balance shield. The mixing device comprises the following contents that a rotating joint of the earth pressure balance shield comprises fixed parts and rotating parts, a mixing driving mechanism and mixing wings connected with the mixing driving mechanism are comprised; the rotating parts are arranged as a hollow structure; the mixing driving mechanism penetrates through the hollow rotating parts and cutter head partition boards and extends into the earth chamber;and the mixing wings are assembled on the mixing driving mechanism in the earth chamber. In addition, the invention further discloses specific contents of the active mixing method and the installation method of the soil chamber of the earth pressure balance shield. In a word, according to the active mixing device, the installation method and the mixing method, the active mixing device designed isinstalled in front and in back of the cutter head partition boards, and slag soil in the soil chamber in a cutter head supporting arm is actively mixed in the process of shield construction, so thatthe flow plasticity of the slag soil in the soil chamber is improved, the generation of mud cakes is prevented, and the progress of shield construction is effectively ensured. The design can not onlybe used in a new shield machine, but also can be used in the reconstruction of an existing old shield machine.

Description

technical field [0001] The present invention relates to the stirring of muck in the soil chamber of earth pressure balance shield tunneling machine, in particular to an active stirring device, installation method and stirring method of soil chamber of earth pressure balance shield tunneling machine. Cabin mud cake. Background technique [0002] Nowadays, earth pressure balance shield machines are mainly used in subway construction, and the main drive generally adopts the central support type. During the propulsion process of the shield, the cutter in front of the cutter head cuts the soil, and the soil enters the soil cabin, and then is output through the screw conveyor at the lower part of the soil cabin, and finally transported to the ground for disposal. However, since the muck entering the soil chamber through the central opening of the cutter head has no relative movement, and the four support arms of the cutter head hinder the falling of the muck in the soil chamber, ...

Claims

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Application Information

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IPC IPC(8): E21D9/06E21D9/08E21D9/12
CPCE21D9/06E21D9/0635E21D9/0642E21D9/08E21D9/12
Inventor 王婷雯王国义田春雨孟庆明陈洋洋周显刚肖政伟牟建红房师涛
Owner POWERCHINA RAILWAY CONSTR