Hinged sealing test device for shield tunneling machine

Abstract

The invention discloses a hinged sealing test device for a shield tunneling machine, which comprises a first cylinder, a second cylinder, a first shell and a second shell, wherein the first cylinder and the second cylinder are connected through a first hinged sealing piece; the first shell and the second shell are fixedly arranged on the outer sides of the first cylinder and the second cylinder respectively; the first shell and the second shell are connected through a second hinged sealing piece; the first cylinder, the second cylinder, the first shell, the second shell, the first hinged sealing piece and the second hinged sealing piece form a sealing ring cavity, and at least one of the first shell and the second shell is provided with a reserved pressurizing port used for pressurizing the sealing ring cavity. According to the hinged sealing test device for the shield tunneling machine, a medium with preset pressure can be injected into the sealing ring cavity through the reserved pressurizing opening; the working condition that the hinged sealing structure of the shield tunneling machine bears the external pressure is simulated, the technical problem that the sealing performanceof the hinged sealing structure of the shield tunneling machine cannot be predicted in the construction process in the prior art is solved, and the safety of the shield construction process is improved.

Description

technical field [0001] The invention relates to the technical field of shield machine sealing test equipment, in particular to a shield machine hinge seal test device. Background technique [0002] In the process of tunnel construction, especially for tunnel construction with high risk, high difficulty, tight construction period and long construction distance, shield machines are usually used for construction. [0003] The hinged sealing structure is the key structure of the shield machine, which is mainly used to prevent muddy water or slag outside the shield from intruding into the equipment. During the construction of the shield machine, the hinged sealing structure bears a certain pressure, especially in the process of turning the shield machine, the larger the turning angle, the greater the pressure on the hinged sealing structure, which affects the pressure on the hinged sealing structure Performance and service life put forward higher requirements. [0004] However,...

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Problems solved by technology

[0004] However, in the prior art, the pressure-bearing capacity of the hinged seal structure is only theoretically calculated at the design stage, and the actual pressure-bearing capacity of the hinged seal structure in application cannot be tested. Therefore, in the actual construction process of the shield machine, it is easy to cause The external environmental pressure leads to the failure of the hinged sealing structure, the damage of the seal or the excessive wear of the sealing gap, which will cause water leakage and slurry leakage of the shield machine during the construction process, which will affect the construction safety and project progress.

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