Drawing table capable of adaptively adjusting height and angle of tabletop

Abstract

The invention discloses a drawing table capable of adaptively adjusting the height and the angle of a tabletop. The drawing table comprises a table board assembly, a front hollow cross beam assembly,a rear hollow cross beam assembly, a height adjustment mechanism and a five-rod angle adjustment mechanism, wherein the height adjustment mechanism comprises a left front height adjustment mechanism,a right front height adjustment mechanism, a left rear height adjustment mechanism and a right rear height adjustment mechanism; the height adjustment mechanism further comprises a linkage mechanism;the five-rod angle adjustment mechanism is that: a screw rod assembly is mounted between the front hollow cross beam assembly and the rear hollow cross beam assembly; a height adjustment nut is mounted on the screw rod assembly; a hand wheel assembly is mounted at the end part of the screw rod assembly; a connection rod is connected between the table board assembly and the screw rod assembly; anda rocker is connected between the table board assembly and the rear hollow cross beam assembly. The height adjustment mechanism is used for solving the problem on height adjustment of the tabletop; aratio of a maximum variation of the height of the tabletop to an average height of the tabletop is equal to a ratio of an average variation of male and female heights to an average height. The five-rod angle adjustment mechanism is used for solving the problem on adjustment of an angle of the tabletop, and the adjustment range of an inclination angle of the tabletop is 0 to 30 degrees.

Description

technical field [0001] The invention relates to a drawing table, in particular to a drawing table with self-adaptive adjustment of the height and angle of the table top. Background technique [0002] In engineering higher education, mechanical drawing is a compulsory course. The basic principles in engineering graphics, that is, length alignment, height alignment, and width equality, must be understood, proved and mastered through drawing practice. The practice process includes daily homework With major assignments, mechanical principles have a week of course design, mechanical design has a three-week course design, professional courses have a professional course design, and the last semester is a graduation project. Engineering students have about 30 weeks of time related to drawing, although there are CAD, but manual drawing is the basic skill and the premise of using CAD drawing. [0003] At present, there are two plans for students to draw, one is to place drawing board...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two plans for students to draw, one is to place drawing boards on the desks for drawing, mainly for drawing homework, the second is to draw on the drawing table, mainly for course design and graduation design, because course design and The continuous drawing time of the graduation project is very long, and because the heights of the students are different, the height of the current drawing table is the same, which makes the students who are tall and short often bend over to draw, and their legs ache at the end of the day

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