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A central flushing device for a centrally closed cutter head

A closed, cutter head technology, applied in mining equipment, earth square drilling, tunnels, etc., can solve the problems of easy mud cake formation, achieve the effects of preventing muck cake formation, improving work efficiency, and simple production

Active Publication Date: 2017-12-19
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of cutterheads on the shield machine. The closed center cutterhead is a kind of cutterhead with a large number of applications, but the central area of ​​the cutterhead is a closed structure. The muck does not move relative to the central area, and it is easy to form mud cakes.

Method used

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  • A central flushing device for a centrally closed cutter head
  • A central flushing device for a centrally closed cutter head

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Embodiment Construction

[0013] Such as Figure 1-2 As shown, a center-closed cutter head center flushing device includes a small rotary joint 1, a large rotary joint 2, a transition piece 3, a cutter head flange 4 and a spout. The small rotary joint 1 is installed on the large rotary joint 2 and It is connected in series with the large rotary joint 2, the large rotary joint 2 is fixed on the transition piece 3, the transition piece 3 is fixed on the cutter head flange 4, the nozzle is installed on the cutter head flange 4, the channel I1-1 of the small rotary joint 1 It is docked with the channel II2-1 of the large rotary joint 2, the channel II2-1 is connected with the channel III3-1 on the transition piece 3, and the channel III3-1 is connected with the nozzle.

[0014] In this embodiment, the spout includes spout I5 and spout II6, spout I5 and spout II6 are installed on the cutter head flange 4, and the channel III3-1 is divided into two paths, one path is connected with spout I5, and the other pa...

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Abstract

The invention discloses a center flushing device for a center-closed cutter. The center flushing device for the center-closed cutter comprises a small swivel joint, a large swivel joint, a transition piece, a cutter flange and nozzles. The small swivel joint is connected to the large swivel joint and is in series connection with the large swivel joint, the large swivel joint is fixed on the transition piece, the transition piece is fixed on the cutter flange, the nozzles are arranged on the cutter flange, a channel I of the small swivel joint is abutted with a channel II of the large swivel joint, and the channel II is abutted with a channel III in the transition piece, and the channel II is connected with the nozzles. According to the center flushing device for the center-closed cutter, a water source enters from the inlet of the small swivel joint, passes the channel, the channel II and the channel III and then is sprayed from the nozzle I and the nozzle II, residual soil in the closed cutter center is improved, the residual soil is effectively prevented from being incrusted, and the work efficiency is improved. Furthermore the center flushing device for the center-closed cutter rotates along with the cutter flange entirety, thus winding of a pipeline is not caused, and the occurrence rate of faults is reduced. The center flushing device for the center-closed cutter is convenient to use, easy in manufacturing and good in use effect.

Description

technical field [0001] The invention belongs to the technical field of excavation and construction of a tunnel shield machine, and in particular relates to a central flushing device of a centrally closed cutter head. Background technique [0002] In recent years, shield construction has been widely used in underground tunnel construction due to its small impact on the ground and underground environment, fast excavation speed, and small surface settlement. There are many types of cutterheads on the shield machine. The closed center cutterhead is a kind of cutterhead with a large number of applications, but the central area of ​​the cutterhead is a closed structure. The muck does not move relative to the central area, and it is easy to form mud cakes. . [0003] Therefore, strengthening the muck improvement means in the central area of ​​the cutter head has become a problem that must be solved. Contents of the invention [0004] Aiming at the deficiencies described in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 常巍峰王鑫邢朋飞郑康泰卓兴建
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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