Shear-type podium table based on ball screw lifting

Abstract

The invention discloses a shear-type podium table based on ball screw lifting. The shear-type podium table comprises a podium tabletop, two sets of shear-type stretchable rods arranged below the podium tabletop, both of the top ends of the two sets of shear-type stretchable rods are embedded into grooves formed in the bottom end of the podium tabletop, the bottom ends are connected to ball screw nuts, a ball screw connected with each ball screw nut is sleeved with the corresponding ball screw nut, a crank mechanism is arranged between one ends of the two ball screws, a rotating rocker is hinged to the crank mechanism, the two ball screws and the rotating rocker are fixed to a bottom plate, the bottom ends of the periphery of the bottom plate are each provided with a roller. Due to arrangement of the stretchable rods, on the basis of regulation of the ball screw, on the one hand, the height of the supporting rod can be flexibly and mechanically adjusted; on the other hand, the shear-type stretchable rods can be compressed and folded, so that the stretchable rods are exquisite, portable and convenient to carry and store; due to arrangement of the four rollers, the podium table can be flexibly and conveniently moved, the current requirement for flow teaching and interaction between teaching and learning is met, and the shear-type podium table is simple, practical, good in practicability and worthy of wide popularization.

Description

technical field [0001] The invention relates to the technical field of teaching facilities, in particular to a scissor-type podium table that is lifted and lowered based on a ball screw. Background technique [0002] With the acceleration of investment in modern education, more and more areas have begun to pay attention to primary and secondary education, and the podium table is generally placed on the teacher's podium for the teacher to put textbooks, chalk and other teaching utensils in class. It is the most basic in school teaching. One of the teaching aids. At present, most of the teachers are fixed podium tables, such as figure 2 As shown, it is mainly composed of a base, a support rod, and a podium table top. The structure is simple, but it has the following disadvantages: First, the base is not equipped with rollers, and manual handling is required to move the podium table, which is inconvenient and laborious, and cannot meet the current flexibility. The needs of te...

AI Technical Summary

Problems solved by technology

At present, most of the teachers are fixed podium tables, such as figure 2 As shown, it is mainly composed of a base, a support rod, and a podium table top. The structure is simple, but it has the following disadvantages: First, the base is not equipped with rollers, and manual handling is required to move the podium table, which is inconvenient and laborious, and cannot meet the current flexibility. The needs of teaching, at the same time, the height of the support rod is not adjustable, which cannot fully take into account the factors of the height of the teacher. When a tall teacher is giving a lecture, he has to bow his head and bend over to look at the textbooks placed on the podium table. This may cause cervical spondylosis in the long run. If the short teacher takes the chalk and other items placed on the podium table, he needs to stand on tiptoe or borrow auxiliary tools to achieve it, which is extremely inconvenient and laborious; second, the podium table top is just a fixed table top, which cannot meet close-distance teaching Tutoring or need to cooperate with the teaching requirements of hanging materials, single function, poor practicability

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