A method for hoisting shield machine in a narrow space near the business line

Abstract

The invention discloses a method for hoisting a shield machine in a narrow space near a business line. The method includes: 1. making a receiving bracket for the shield machine; 2. installing guide rails and pushing the shield machine; 3. disassembling and hoisting Pull out the upper part of the shield tail; 4. Remove and lift out the screw conveyor; 5. Disassemble and lift out the assembly machine; 6. Disassemble and lift out the lower half of the shield tail; 7. Lift out the middle shield; 8. Cutter plate and the position adjustment of the front shield; 9. Separate the cutter head and the front shield and hang them out in turn. The invention is simple in structure and reasonable in design. When the wellhead of the shaft is small, it breaks through the traditional mode that the shield machine needs a large shaft wellhead to be hoisted out by dismantling it first and then hoisting it out. The screw conveyor is disassembled, which simplifies the dismantling work of the screw conveyor, so that the screw conveyor can return to the starting wellhead and hoist it out when the wellhead of the shaft is narrow; adjust the direction of the front shield and the cutter head and then hoist it out in sequence The wellhead of the shaft solves the problem of difficult separation of the cutter head and the front shield.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling machine hoisting construction, and in particular relates to a method for hoisting a shield tunneling machine in a narrow space near a business line. Background technique [0002] Shield machine hoisting is one of the key links in shield tunneling construction. Usually, the shield machine is hoisted at the hoisting wellhead at the end of the station to complete the disassembly of the shield machine. Generally, a crawler crane with a lifting capacity of 260 tons is used to lift out. The conventional size of this type of crane is 6.4 meters in length, 7.6 meters in width, and 3.3 meters in height. The order of the conveyor, assembly machine, lower part of the shield tail, cutter head, middle shield and front shield is to lift the shield machine out of the wellhead. [0003] However, during the construction of Xi’an Metro Line 4, the shield tunnel reception on the left line of the section fr...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for hoisting the shield machine in a narrow space near the business line in view of the above-mentioned deficiencies in the prior art. The way of hoisting breaks through the traditional mode that the shield machine needs a large shaft wellhead to be hoisted out. The dismantling of the screw conveyor is simplified by using 10-ton and 5-ton chain-down chains. When the shaft wellhead is narrow, the screw conveyor can be hoisted back to the originating wellhead, which facilitates the lifting of the screw conveyor; after adjusting the direction of the front shield and the cutter head, it is hoisted out of the shaft wellhead in turn, which reduces the safety risk and solves the problem Solved the problem of difficulty in separating the cutter head from the front shield

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