Teaching demonstration experiment table
A technology for experiment bench and trajectory generation, applied in the field of teaching aids, can solve problems such as inconvenience for students to understand, inability to draw connecting rod curves in real time, waste of time, etc.
Inactive Publication Date: 2014-12-10
SHENYANG LIGONG UNIV
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Problems solved by technology
[0002] The teaching and demonstration experiment platform of planar linkage mechanism has been widely used in various colleges and universities, but at present, when the length of connecting rod needs to be adjusted in the experiment platform of planar linkage mechanism, a wrench must be used to disassemble and assemble again, which is very inconvenient and wastes time, and the link mechanism The demonstration of the kinematic characteristics of the predetermined trajectory cannot draw the connecting rod curve in real time, which is not intuitive and not easy for students to understand
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[0027] A kind of teaching demonstration experiment bench, comprises frame 6, trajectory generation sketchpad 4, trajectory generation mechanism 15, trajectory generator 39 and motor 1, is characterized in that:
[0028] The frame 6 includes an upper beam 9, a lower beam 10, a left column 11, a right column 12, five middle columns 13 and a base 14, and the upper ends of the left column 11 and the right column 12 are respectively fixed with the upper beam 9 by bolts To connect, the lower ends of the left column 11 and the right column 12 are fixedly connected with the lower crossbeam 10 with bolts respectively. The left column 11, the right column 12, the upper beam 9 and the lower beam 10 jointly form a frame and the base 14 is fixedly connected together with bolts.
[0029] The upper end beam 9 is provided with a first transverse groove 7 horizontally, the lower end beam 10 is provided with a second transverse groove 8 horizontally, and five middle columns 13 are arranged vert...
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The invention discloses a teaching demonstration experiment table. The teaching demonstration experiment table comprises a frame, a drawing board, a track generating mechanism and track generators, wherein the track generating mechanism is a spiral adjustable gear five-rod combination mechanism, and consists of a first gear, a second gear, a third gear, a left upper connecting rod, a left lower connecting rod, a right upper connecting rod and a right lower connecting rod which are meshed together; the lower ends of the left lower connecting rod and the right lower connecting rod are connected with wheel axles of the second gear and the third gear respectively; the upper ends of the left lower connecting rod and the right lower connecting rod are hinged to the lower ends of the left upper connecting rod and the right upper connecting rod respectively; the left upper connecting rod is connected with a right upper end through a hinge shaft; a drawing pen is arranged on the hinge shaft through a first track generator, and is arranged on the connecting rods through a second track generator. Through adoption of the teaching demonstration experiment table, the lengths of the connecting rods can be adjusted on line without detachment, connecting rod motion track curves on the drawn vividly and intuitively on the drawing board in real time, and students can grasp a connecting rod mechanism more deeply in order to realize the motion characteristic of a preset track.
Description
technical field [0001] The invention relates to a teaching appliance, in particular to a teaching demonstration experiment platform. Background technique [0002] The teaching and demonstration experiment platform of planar linkage mechanism has been widely used in various colleges and universities, but at present, when the length of connecting rod needs to be adjusted in the experiment platform of planar linkage mechanism, a wrench must be used to disassemble and assemble again, which is very inconvenient and wastes time, and the link mechanism The demonstration of the kinematic characteristics of the predetermined trajectory cannot draw the connecting rod curve in real time, which is not intuitive and not easy for students to understand. Contents of the invention [0003] The purpose of the present invention is to provide a teaching demonstration experiment platform. The present invention designs a spiral adjustable planar linkage mechanism for the above deficiencies, wh...
Claims
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IPC IPC(8): G09B25/02
Inventor 李金泉陶军刘迟蒋伟王彦陈琳
Owner SHENYANG LIGONG UNIV