Active and passive instability teaching demonstrator of shield excavation face
An excavation surface, active and passive technology, applied in the field of teaching demonstration instruments, can solve problems such as students' difficulty in understanding, and achieve the effect of rich demonstration content, simple structure, and meeting the needs of classroom teaching
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[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] like figure 1 As shown, the present invention consists of a front panel 27 of plexiglass, and the rest are left side panels 3, right side panels 7, bottom panels 12 and back panels 28 of metal plates to form an open model box; the shortest upper shield body 4, middle shield body 5 and the section of the longest lower shield body 11 are hollow semi-cylindrical bodies with the same diameter. The axes are parallel to the bottom plate 12 .
[0022] like figure 1 As shown, the upper shield body 4, the middle shield body 5 and the lower shield body 11 have the same structure, but the lengths of the three long axes are different, and some of the upper shield body 4, the middle shield body 5 and the lower shield body 11 share the same number.
[0023] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the structure of the three ...
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