Multimedia computer teaching device
The utility model discloses a multimedia computer teaching device. Bottom plate, a plurality of stand columns are fixedly arranged at the upper end of the bottom plate. A plurality of sleeve columns are connected to the plurality of upright columns in a sliding manner; the top ends of the plurality...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The utility model discloses a multimedia computer teaching device. Bottom plate, a plurality of stand columns are fixedly arranged at the upper end of the bottom plate. A plurality of sleeve columns are connected to the plurality of upright columns in a sliding manner; the top ends of the plurality of sleeve columns are fixedly connected with a lifting plate; a lower cushion block is fixedly arranged on one side of the lifting plate; the other side of the lifting plate is rotationally connected with a hinge; the other end of the hinge is rotationally connected with an inclined plate; an uppercushion block is fixedly arranged on the side, away from the hinge, of the inclined plate. The top end of the inclined plate is slidably connected with a stop block. Box bodies are fixedly arranged onthe two sides of the top end of the bottom plate. Gears are rotationally arranged in the box bodies on the two sides; gear teeth of the gear are meshed with a rack, the top end of the rack is fixedlyconnected with the lifting |
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