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Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum

A technology of shield cutter head and large particle size, which is applied to mining equipment, earthwork drilling, tunnels, etc., can solve the problems of high construction safety risk, large impact on the surrounding environment, and long construction period, so as to shorten the construction period and reduce construction costs. The effect of cost reduction and construction cost reduction

Inactive Publication Date: 2013-05-01
BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The commonly used methods of open and hidden excavation have great impact on the surrounding environment, high cost, high construction safety risks, and long construction period, which cannot meet the requirements of engineering design and construction.
Ordinary shield cutters and knives cannot break the enriched high-strength and large-sized boulders. Usually, for a small number of large-sized boulders or boulders, other auxiliary means are used to crush them before shielding tunneling construction

Method used

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  • Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum
  • Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum
  • Shield tunneling machine cutter disc used for enriching large-particle-size boulder stratum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: as Figure 1-4 As shown, the shield cutter head for enriching large-sized boulder formations includes a cutter head body and cutters, and four main ribs 2 perpendicular to each other are arranged on the circular cutter head body 1 at the center of the cutter head body. The upper surfaces of the four main ribs 2 form the main rib disk surface, and the main ribs 2 are welded with the circular steel plate 6 of the outer circumference of the cutter head body 1 to form a panel-type shield cutter head; The central positions of the cutter head body 1 intersect each other perpendicularly and are respectively arranged at 45° intervals with the four main ribs 3. The main ribs 2 and the spokes 3 are connected to each other through a steel grid 5, and a heavy-duty Tear knife 8, disc hob 9 and cutter head panel strengthening protection knife 13, are fixed with heavy duty tear knife 8 and scraper 10 above spoke 3;

Embodiment 2

[0015] Embodiment 2: as Figure 1-4 As shown, a double disc hob 12 is installed at the center of the cutterhead body 1, and the rest are as described in Embodiment 1.

Embodiment 3

[0016] Embodiment 3: as Figure 1-4 As shown, the strengthening protection knife 13 is welded on the top of the main rib plate of the cutterhead, and the strip-shaped strengthening protection knife 14 is welded on the outside of the circular ring steel plate 6 of the cutterhead body. The heights of the scraper 10, disc hob 9, reinforced protective knife 13 and heavy tearing knife 8 on the cutter head body 1 are respectively set from low to high, thereby forming a multi-track multi-level cutter arrangement, except that the reinforced protective knife 13 is welded In addition, the scraper 10, the disc hob 9, and the heavy tearing knife 8 all adopt the back-mounted bolt connection installation method, and the cutter can be replaced directly in the shield soil bin. The outer surface of the cutter head body 1 is covered and welded with high strength. Chromium carbide wear-resistant steel plate 15, and the rest are as described in Example 1.

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Abstract

The invention relates to a shield tunneling machine cutter disc used for enriching the large-particle-size boulder stratum. The shield tunneling machine cutter disc comprises a cutter disc body and a cutter tool, wherein the circular cutter disc body is structurally provided with four main rib plates which are mutually vertical and crossed in the center position of the cutter disc body, the upper surfaces of the four main rib plates form a main rib plate disc surface, meanwhile, four spokes which are mutually vertical and crossed in the center position of the cutter disc body and are in 45-degree alternate arrangement with the four main rib plates are simultaneously arranged, and the main rib plates are mutually connected with the spokes through steel grids and are welded with the outer circumference annular steel plate of the cutter disc body for forming a penal type shield cutter disc. A heavy tearing cutter, a disc-shaped rolling cutter and a cutter disc panel reinforced protection cutter are fixedly arranged above the main rib plate disc surface, the heavy tearing cutter and a scraping cutter are fixedly arranged above the spokes, a fishtail cutter or a duplex disc-shaped rolling cutter is arranged in the center position of the cutter disc body, a stripped reinforced protection cutter is welded on the outer side of the outer circumference annular steel plate of the cutter disc body, and the outer surface of the cutter disc body is fully paved and welded with the high-intensity chromium carbide wear-resistance steel plate.

Description

technical field [0001] The invention relates to a stratum shield cutterhead, in particular to a shield cutterhead for excavating in a compound stratum rich in boulders with large particle sizes and convenient for tool replacement. Background technique [0002] At present, there is no successful case of using the shield tunneling method for long-distance tunnel excavation in strata rich in large-sized boulders. In addition, the tunnel project is located below the city's rivers and lakes, and the stratum is rich in water. The tunnel construction is facing great difficulties. . The commonly used methods of open and hidden excavation have great impact on the surrounding environment, high cost, high construction safety risk, and long construction period, which cannot meet the requirements of engineering design and construction. Ordinary shield cutters and knives cannot break the enriched high-strength and large-sized boulders. Usually, for a small number of large-sized boulders ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
Inventor 桂轶雄王良唐虎
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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