Experimental study of self-locking seal structure based on full ocean depth sediment pressure retaining sampler

Liu, Guangping; Jin, Yongping; Peng, Youduo; Tang, Wenbo; Wan, Buyan

doi:10.1016/j.apor.2023.103767

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Self-locking has always been a focus of mechanism design (Chen et al, 2021;Du et al, 2017;Liu et al, 2023;Qiu et al, 2024) . For example, Chen et al (2021) studied the effect of reinforcement diameter on reinforcement prestress release and tensile stress transfer on self-locking structure.…”

Section: Introductionmentioning

confidence: 99%

“…Du et al (2021) studied the self-locking problem of overrunning clutch, and established a mathematical model combined with the self-locking principle of rotation pair. A new self-locking seal structure was designed with an automatic centering plus floating valve core structure to make the sampler seal reliable for deep-sea environment (Liu et al, 2023).Furthermore, the novel graded self-locking kirigami panels are designed (Qiu et al, 2024).…”

Section: Introductionmentioning

confidence: 99%

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Innovative design of self-locking avoidance compliant mechanism of traction type coal baffle

ZHANG,

ZHANG

2024

JAMDSM

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In view of the pollution and safety hazards caused by the damage of supporting roller type coal baffle in coal discharge ditch of thermal power plant, the traction type coal baffle was designed. However, in the one-year experiment, it is found that the device has a hidden danger of self-locking. This paper aims to design a self-locking avoidance compliant mechanism. First, the self-locking areas and causes were identified through computer simulation analysis. To avoid the jamming problem between the roller push rod and the push plate when the impeller coal feeder stops at optional position by increasing the flexibility of the push rod. We established the contradiction matrix between the length of the roller push rod and the opening degree of coal baffle. Furthermore, three kinds of self-locking avoidance compliant mechanisms were designed based on the separation principle of TRIZ theory. In order to obtain the optimal design scheme of mechanism, the orthogonal experiments were carried out to evaluate the design schemes, and the optimal self-locking avoidance compliant mechanism was obtained. Finally, the system was tested in a plant for a year. The results shows that the avoidance self-locking compliant mechanisms can solve the self-locking problem between the roller push rod and the push plate, and it is of great significance to the long-term stable operation of the traction coal baffle.

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