An anti-clogging cutter head nozzle

An anti-clogging, cutter head technology, applied in mining equipment, tunnels, earth-moving drilling, etc., can solve problems such as clogging of cutter head nozzles, and achieve the effect of reducing mud cake and cutting tool wear.

Active Publication Date: 2022-03-29
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies in the above-mentioned background technology, the present invention proposes an anti-clogging cutter head nozzle, which solves the technical problem that the cutter head nozzle is prone to blockage

Method used

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  • An anti-clogging cutter head nozzle
  • An anti-clogging cutter head nozzle
  • An anti-clogging cutter head nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a kind of anti-clogging cutter head spout, such as figure 1 As shown, it includes a cylinder communicated with the injection port on the front panel 4-1 of the cutterhead, and the cylinder is communicated with the liquid supply pipe 3, and the liquid supply pipe 3 sprays foam agent to the front of the front panel 4-1 of the cutterhead through the cylinder or bentonite. A rotating shaft 2-1 with blades 2-2 is arranged in the inner cavity of the cylinder, and a weight 5 is arranged at the rear end of the shaft 2-1, and the shaft 2-1 is connected to the non-rotary part of the weight 5 At the position of the center of gravity, a sealing structure is provided between the weight 5 and the inner cavity of the barrel, and the weight 5 is covered with a protective housing 8 whose inner cavity is larger than the rotation space of the weight.

[0035] like Figure 4 and Figure 5 As shown, the cutter head rotates clockwise, and the weight 5 always points verticall...

Embodiment 2

[0042] Embodiment 2, an anti-clogging cutter head nozzle, the blade 2-2 is a helical blade, and when the weight 5 drives the shaft 2-1 to rotate, the slag discharge direction of the helical blade is the same as the liquid outlet direction of the inner cylinder 2 . When the blades 2-2 rotate, they can both effectively stir and discharge the slag in the inner tube 2 to the outside.

[0043] Other structures of this embodiment are the same as those of Embodiment 1.

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Abstract

The invention discloses an anti-clogging cutterhead nozzle, which solves the technical problem that the cutterhead nozzle is prone to blockage. The invention comprises a cylinder communicated with the injection port on the front panel of the cutter head, the cylinder communicates with the liquid supply pipe, a shaft is arranged in the inner cavity of the cylinder, and a weight is arranged at the rear end of the shaft. The shaft rod is connected to the non-center of gravity of the weight, and a sealing structure is provided between the weight and the inner cavity of the barrel, and the outer cover of the weight is covered with a protective shell whose inner cavity is larger than the rotation space of the weight. The invention can realize the self-rotation of the cutter head with the relative rotation of the shaft rod, so as to achieve the effect of the shaft rod and the blade stirring the clogged muck inside the nozzle, effectively solve the situation that the cutter head nozzle is blocked during the excavation process, and ensure the safety of the cutter head of the roadheader. Normal excavation, thereby reducing the phenomenon of mud cake and gushing on the cutter head, and reducing tool wear.

Description

technical field [0001] The invention relates to the technical field of roadheader cutterheads, in particular to an anti-blocking cutterhead nozzle. Background technique [0002] With the rise of tunnel excavation projects, the superiority of shield method construction has become increasingly prominent. When the shield machine travels through complex strata for a long distance, it is prone to problems such as mud cake formation on the cutter head, excessive cutter head torque, gushing, and severe tool wear. In order to solve the above problems, it is necessary to improve the muck cut by the cutter head during the construction process of the shield tunneling method. The dregs improvement technology mainly injects a certain proportion of foam agent and bentonite into the excavation chamber through the nozzle of the cutter head to improve the properties of the muck, stabilize the pressure of the soil bin, reduce the consumption of cutters, and reduce the driving power of the cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08
Inventor 任涪伟孟艺敏张超喻中孝张世伟张家年
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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