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roadheader

A technology of roadheader and propulsion device, which is applied to mining equipment, tunnels, earthwork drilling, etc., and can solve problems such as the inability to maintain the pressure of the excavation chamber and the inability to discharge slag

Active Publication Date: 2022-07-08
CHINA RAILWAY CONSTR HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some roadheaders including TBM mode, TBM is suitable for hard rock formations with strong self-stability, and belt conveyors are usually used to discharge slag. Since there is no seal between the shield body and the rock wall in this mode, when mud-water balance is used to discharge slag, The excavation chamber pressure cannot be maintained, so in the absence of shield sealing, the TBM mode of the dual-mode roadheader cannot excrete slag

Method used

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] The core of the present invention is to provide a roadheader, which can use the mud-water balance slagging method to carry out slagging in the TBM mode.

[0029] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly c...

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Abstract

The invention discloses a roadheader with a TBM mode, comprising a shield body and a mud-water balance slag discharge system arranged in the shield body. A propulsion device is arranged between the body assembly and the holding shield, the front shield body assembly is provided with a front support shoe, the support shield is provided with a rear support shoe, and the outer sides of the front shield body assembly and the support shield are respectively sleeved with annular rings. The first sealing device is radially expandable and retractable. In TBM mode, during the process of tunneling or changing steps, the shield body can be sealed with the rock wall, which provides a basis for the application of mud-water balance and slag discharge, which can effectively prevent mud from entering the equipment area behind the roadheader and prevent The pressure loss of the face ensures the smooth operation of the roadheader. Due to the scalability of the first sealing device, the first sealing device on the shield body in the moving state in the roadheader can be slightly retracted, which can reduce the damage to the first sealing device. wear and prolong the life of the first sealing device.

Description

technical field [0001] The invention relates to the technical field of tunneling equipment, in particular to a tunneling machine. Background technique [0002] With the continuous development of roadheaders in the field of underground construction, they face more and more complex geological challenges, and the existing roadheaders generally only have a single working mode, which is difficult to cope with the complex working conditions that alternately appear in multiple geology. [0003] In order to solve this problem, the dual-mode roadheader is born. Compared with the single-mode roadheader, the dual-mode roadheader has two working modes at the same time. For some roadheaders including TBM mode, TBM is suitable for hard rock formations with strong self-stability, and belt conveyor is usually used for slag removal. Since there is no seal between the shield body and the rock wall in this mode, when the mud-water balance slag removal method is used, The pressure of the excav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087E21D9/06E21D9/12
CPCE21D9/087E21D9/12E21D9/0621E21D9/0635
Inventor 刘飞香程永亮彭正阳刘学马龙明江志强申鹏飞陈亮张瑞林董岩松
Owner CHINA RAILWAY CONSTR HEAVY IND
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