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Anti-blocking cutter head nozzle

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

Active Publication Date: 2021-04-16
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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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] Such as Figure 4 and Figure 5 As shown, the cutter head rotates clockwise, and the weight 5 always points vertic...

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 Embodiment 1.

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Abstract

The invention discloses an anti-blocking cutter head nozzle. The technical problem that a cutter head nozzle is prone to being blocked is solved. The nozzle comprises a cylinder body communicated with a jet orifice on a front panel of a cutter head; the cylinder body is communicated with a liquid supply pipe; a shaft rod is rotatably arranged in an inner cavity of the cylinder body; a heavy hammer is arranged at the rear end of the shaft rod; the shaft rod is connected with a non-gravity-center position of the heavy hammer; a sealing structure is arranged between the heavy hammer and the inner cavity of the cylinder body; and a protective shell with an inner cavity larger than the rotation space of the heavy hammer covers the heavy hammer. According to the anti-blocking cutter head nozzle, the shaft rod can rotate relative to the rotating cutter head, so that the shaft rod and blades can stir residue soil blocked in the nozzle, the problem that the nozzle of the cutter head is blocked in the tunneling process can be effectively solved, normal tunneling of the cutter head of a tunneling machine is guaranteed, the phenomena of mud cake formation and spewing of the cutter head are reduced, and cutter abrasion is reduced.

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 Applications(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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