Shield tunneling machine articulation mechanism seal performance test device and test method

Abstract

The invention discloses a shield tunneling machine articulation mechanism seal performance test device and test method. The test device comprises an outer barrel fixed to an installation rack and an articulation seal ring coaxially arranged in the outer barrel in a sleeved mode, the back end of the articulation seal ring is provided with a step portion for being sleeved with a to-be-tested elastic seal ring, and the middle of the articulation seal ring is provided with an annular groove for being sleeved with a to-be-tested airbag seal ring; the interior of the outer barrel are isolated into a seal cavity through a first baffle and a second baffle, and a force transmission frame for enabling the articulation seal ring to not axially move and hydraulic oil cylinders driving the articulation seal ring to wing are arranged in the outer barrel. By injecting a medium under pressure into the seal cavity and injecting lubricating grease into a gap formed between the outer barrel and the articulation seal ring, real working conditions are simulated, the seal performances of the elastic seal ring and the airbag seal ring are tested, results measured through tests are fed back to research and development of new equipment, a seal scheme achieving the optimal performance is adopted on the new equipment, the reliability of the equipment is enhanced, the equipment construction risk is reduced, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sealing of the hinge mechanism between the front shield, the middle shield and the tail shield of a shield machine, and in particular to a sealing performance test device and a test method for the hinge mechanism of the shield machine. Background technique [0002] The shield machine is a large-scale construction machine for tunnel construction. During the excavation of the tunnel, sometimes it is necessary to turn, and the shield machine must be able to pass through the turning area. Therefore, the shield machine usually includes several parts such as the front shield, the middle shield, and the tail shield. The front shield, the middle shield, and the tail shield are connected by a hinge mechanism. When turning, the front shield and the middle shield or the middle shield and the tail shield There will be a certain angle between them to meet the turning requirements of the shield machine. [0003] When ...

AI Technical Summary

Problems solved by technology

The following four factors will affect the sealing performance and life of the sealing ring. First, the different structural forms of the elastic sealing ring and the airbag sealing ring will lead to differences in reliability, adaptability to working conditions, and manufacturability; the second is the internal structure of the shield machine. The pressure difference with the outside, the lubrication effect of the elastic sealing ring and the air bag sealing ring and the shield body will affect the sealing performance; the third is the hinge angle between the front shield, middle shield and tail shield during the tunneling process of the shield machine Constant changes will lead to constant changes in the annular space where the sealing ring is installed, and the sealing performance and life of the sealing ring will face the test; Fourth, the pressure at the hinge in the tunnel will affect the sealing performance of the hinge mechanism and the life of the sealing ring, and whether the hinge mechanism Ability to withstand external pressure requires testing

At present, there is no device that can test the sealing performance of the hinge mechanism of the shield machine

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