Hinged sealing structure for quasi-rectangular shield casing
A hinged sealing, rectangular-like technology, used in engine sealing, engine components, mining equipment, etc., to solve problems such as uneven installation gaps
Active Publication Date: 2016-06-08
SHANGHAI TUNNEL ENG CO LTD +2
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Problems solved by technology
[0003] In order to overcome the defects existing in the prior art, a hinged sealing structure for a similar rectangular shield casing is provided to solve the installation problem caused by machining accuracy between the front and rear casings after the casing of a large rectangular section shield is hinged. There is a problem of inhomogeneity in the gap, further improve the sealing performance in the installation gap, and avoid muddy water backflow
Method used
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[0014] In order to facilitate the understanding of the structure of the present invention, the following description will be made in conjunction with the accompanying drawings and embodiments.
[0015] refer to figure 1 , is the overall schematic diagram of the hinged sealing structure used in the quasi-rectangular shield shell of the present invention. Such as figure 1 As shown, the present invention provides a hinged sealing structure for a similar rectangular shield casing. The shield casing includes a front section casing 1 and a rear section casing 2. The front section casing 1 is connected to the rear section through a hinged connecting rod 3. The segment housing 2 is connected and sleeved outside the rear segment housing 2, and an installation gap 4 is formed between the inner wall of the front segment housing 1 and the outer wall of the rear segment housing 2; the hinged sealing structure includes a radial sealing ring 5, an adjustment tight The pressing piece 6 and ...
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The invention provides a hinge sealing structure of a rectangular shield shell unit. The hinge sealing structure is characterized in that the shield shell unit comprises a front shell and a rear shell, the front shell sleeves the rear shell, and a mounting clearance is formed between the inside wall of the front shell and the outside wall of the rear shell; the hinge sealing structure comprises a radial sealing ring, an adjusting compressing element and tooth-formed sealing rings, the radial sealing ring and the tooth-formed sealing rings circularly fill in the mounting clearance, and the adjusting compressing element radially penetrates the rear shell to be ejected to the radial sealing ring, so that the front shell is pressed. By the use of the hinge sealing structure, the problem that the mounting clearance is uniform for poor processing precision after sleeving and hinging of the shell unit of the rectangular or quasi-rectangular large-section shield is solved, sealing effect of the mounting clearance is further improved, and muddy water is prevented from flowing backward.
Description
technical field [0001] The invention relates to a hinged sealing structure, in particular to a combined sealing structure suitable for the hinged joints of the front and rear shells of a rectangular shield. Background technique [0002] At present, the front and rear shells of the existing shield are generally connected by hinges. In order to prevent muddy water from pouring back, a sealing structure is installed at the overlapping joints of the front and rear shells. However, in the processing and manufacturing of the existing large-section rectangular or similar rectangular shield shells, it is difficult to ensure the dimensional accuracy of the outer circumference of the front and rear shells. Therefore, after the hinge is installed, there is a gap between the front shell and the rear shell There is a deviation in the gap size. If it is only sealed in a common and existing way, it will result in uneven compaction. Contents of the invention [0003] In order to overcom...
Claims
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IPC IPC(8): F16J15/06E21D9/06
CPCE21D9/0635
Inventor 王兴梁赟露刘峰石元奇朱雁飞刘喜东陈培新陈旭光董子博
Owner SHANGHAI TUNNEL ENG CO LTD