Arrangement method of hobs for directly cutting reinforcements in concrete in shield tunneling machine

A layout method and shield machine technology, applied in the field of shield machines, can solve the problems of short steel bars and long steel bars stuck to the cutterhead screw conveyor, etc., so as to avoid being stuck, good economic and social benefits, and ensure normal operation The effect of excavation

Active Publication Date: 2017-02-15
CHINA RAILWAY TUNNEL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for arranging hobs for cutting steel bars in concrete in a shield machine. The shield machine cutter head arranged by this method can make the length of the cut steel bars relatively short, and solve the problem caused by long steel bars being stuck. Problems with the cutter head and screw conveyor, so that the shield machine can move forward normally

Method used

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  • Arrangement method of hobs for directly cutting reinforcements in concrete in shield tunneling machine
  • Arrangement method of hobs for directly cutting reinforcements in concrete in shield tunneling machine
  • Arrangement method of hobs for directly cutting reinforcements in concrete in shield tunneling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 2 , Figure 4 and Figure 6 As shown, the end cover 106 of the knife box of the double-edged hob numbered #5 and #7 is heightened, and the center line of the center hole of the bearing 107 used to install the double-edged hob in the end cover 106 is raised by 20mm , that is to remake the end cover 106 after the central hole is raised by 20mm, and then install the end cover 106 together with the double-edged hob 101 in the knife box 108 numbered #5 and #7, so that the number after the heightening treatment is # 5 and #7 double-edged hobs had their cutting edges in the second plane.

[0035] Such as image 3 , Figure 5 and Figure 6 As shown, the cutter boxes 108 of the single-edged hobs numbered #13, #18, #23, #28, and #32 remain unchanged, and the C-shaped block used to fix the single-edged hob 102 and the cutter box 108 109. Wedging block 110 and tension bolt 111 are heightened. The height of heightening is to increase the center line of single-e...

Embodiment 2

[0037]This embodiment is the basis for heightening the double-edged hobs numbered #5 and #7 and the single-edged hobs numbered #13, #18, #23, #28 and #32 in the above-mentioned first embodiment On the above, further heighten the double-edged hobs numbered #6 and #8, and the height of the raised height is to raise the center line of the double-edged hob by 40mm, so that the numbers after the heightened treatment are #6 and # The blade of the double-edged hob of 8 is in the third plane. Further, the double-edged hobs numbered #9 and #11 are also heightened, and the raised height is the same as that of the double-edged hobs numbered #5 and #7, so that the numbers are #5, #7 and #9 , #11 The blade of the double-edged hob is in the second plane.

[0038] The heightening method and height of the single-edged hobs numbered #13, #18, and #23 are the same as in the first embodiment above, and their blades are in the second plane. On this basis, they are numbered #15, # 20. Adjust the...

Embodiment 3

[0040] This embodiment is the same as the method of raising the height of the hob in the above embodiment, the difference is that the numbers of the hobs for the heightening treatment are different, specifically the blades of the double-edged hobs numbered #5 and #7 In the first plane, place the blades of the double-edged hobs numbered #4 and #6 in the third plane. Adjust the single-edged hobs numbered #21, #23, #29, #31 to the height of the blade in the second plane, adjust the single-edged hobs numbered #14, #22, #30 to the height of the blade The height is in the third plane. After the blades of all double-edged hobs and single-edged hobs are arranged in the same straight line, the height of the blade tip is still arranged in a "serrated" shape, such as Figure 8 shown.

[0041] It can be seen from the above examples that for the height adjustment of hobs, it is necessary to make all the hobs arranged in the order of numbering and the height of the knife tips be arranged ...

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Abstract

The invention discloses an arrangement method of hobs for directly cutting reinforcements in concrete in a shield tunneling machine. A cutter head of the shield tunneling machine is fixedly provided with multiple double-edge hobs and multiple single-edge hobs capable of freely rotating; edges of one part of the multiple double-edge hobs are positioned in a first plane; edges of the other part of the multiple double-edge hobs are positioned in a second plane and / or a third plane; the distance from the second plane to the surface of the cutter head is larger than the distance from the first plane to the surface of the cutter head; the distance from the third plane to the surface of the cutter head is larger than the distance from the second plane to the surface of the cutter head; edges of one part of the multiple single-edge hobs are positioned in the first plane; edges of the other part of the multiple single-edge hobs are positioned in the second plane and / or the third plane; all the edges of the double-edge hobs and the single-edge hobs are numbered in sequence; and when all the edges are arranged as a straight line, tips of the edges are arranged in a saw tooth form.

Description

technical field [0001] The invention belongs to the field of shield machines, and in particular relates to a method for arranging a hob in a shield machine for cutting steel bars in concrete. Background technique [0002] The shield machine drives the cutter head to rotate through the motor, and at the same time uses the shield machine to push the cylinder to push the shield machine forward. With the advance of the push cylinder, the cutter head continues to rotate, and the cut muck fills the soil bin. At this time, the screw conveyor is started to discharge the cut slag to the belt conveyor. With the development of underground projects at home and abroad, the subway network is becoming more and more dense, the number of tunnels is increasing, and the use of shield machines is becoming more and more extensive. In the process of using shield machines, various underground obstacles have to be crossed. Such as underground pipelines, foundation piles, underground diaphragm wall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 杜闯东张家年张津铭王玉卿吴乐斌
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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