CN2217826Y - Magnetic close-keeping type demonstration test table - Google Patents
Magnetic close-keeping type demonstration test table Download PDFInfo
- Publication number
- CN2217826Y CN2217826Y CN 94238412 CN94238412U CN2217826Y CN 2217826 Y CN2217826 Y CN 2217826Y CN 94238412 CN94238412 CN 94238412 CN 94238412 U CN94238412 U CN 94238412U CN 2217826 Y CN2217826 Y CN 2217826Y
- Authority
- CN
- China
- Prior art keywords
- groove
- sliding
- toothed racks
- utility
- sliding rack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The utility model relates to a magnetic attaching type demonstration test table. The utility model comprises a magnetic holder, two sliding toothed racks and gears, wherein, the right side of the magnetic holder is provided with a groove, and the bottom surface is provided with magnetic material; the two sliding toothed racks are arranged in the groove; the gears are arranged on the side wall of the groove and engaged with the sliding toothed racks. A reed is arranged between the bottom surfaces of the toothed racks and the bottom surface of the groove. The tooth surfaces of the two sliding toothed racks are respectively provided with a threaded hole which is perpendicular to the tooth surfaces, and the tooth surfaces of the two sliding toothed racks are also provided with a bearing rod and a cross bracket. The outer end of the bracket is provided with a circular hole, and a sliding rod is arranged in the circular hole; the sliding rod is provided with a sliding rod locking mechanism. An object supporting plate is installed above the cross bracket. The demonstration test table can be vertically or transversely attached on a metal blackboard. When physical experiments or chemical experiments are demonstrated by the utility model, the visual angle of students is widened, the demonstrating effects are enhanced, and the utility model is favorable to observe and comprehend the experiments for the students.
Description
The utility model relates to the comprehensive teaching aid that a kind of mechanics, calorifics and chemical lecture experiment are used.
At present, teacher and instructor are when mechanics, calorifics and chemical experiment are demonstrated for the student in classroom and laboratory, the utensil that normally will test usefulness is placed on dais or the work top and carries out, low because of the position of its placement, the observation place limitation is in presentation process, the student is for clear overall process and the experimental result of understanding demonstration, the observation of having to disseat had so both influenced most students' observation, also was unfavorable for teaching.
The purpose of this utility model is, a kind of lecture experiment platform that can magnetic be affixed on the metal blackboard panel is provided, and overcomes above-mentioned deficiency.
Its purpose can be passed through following scheme implementation, magnetic paster type lecture experiment platform of the present utility model, comprise that longitudinally has the magnet base that groove, bottom surface are installed with magnetic material, two packaged in groove sliding rack and be contained on the magnet base two side, and respectively with the sliding rack meshed gears.Be to eliminate the back lash of rack-and-pinion, between the groove groove bottom of magnet base and sliding rack bottom surface, reed is housed.Be the utensil that clamping and supporting lecture experiment are used, respectively there is a screw perpendicular to the flank of tooth at the middle part at place, two sliding rack outer ends, and disposes pole and cross frame.There is a circular hole at the non-threaded end place of pole, and slide bar is housed in it, and at circular hole one longitudinal end, the holding screw that the tightening slide bar is used is housed, and there is support board the top of cross frame through screw device.
Lecture experiment platform of the present utility model owing to energy magnetic is affixed on the metal blackboard, thereby has changed the visual angle of lecture experiment, improved the position of lecture experiment, helped the observation of student, strengthened the lecture experiment effect lecture experiment, promoted the understanding of student to experiment, standard teaching environment.
The concrete structure of lecture experiment platform of the present utility model is provided by following examples and accompanying drawing thereof.
Accompanying drawing is the sectional view according to the magnetic paster type lecture experiment platform that the utility model proposes.
Below in conjunction with detail and the use of accompanying drawing detailed description according to the magnetic paster type lecture experiment platform that the utility model proposes.
This lecture experiment platform comprises magnet base [1], two sliding racks [3], two gears [7] that drive sliding rack.The magnet base front has longitudinal fluting, its bottom surface is installed with two blocks of magnet, two sliding racks are contained in the groove, on the sidewall of vertical two proximal ends of groove, two groups of corresponding boss that oriented groove stretches out outward, two gears are installed in respectively in the lateral support hole of boss, and with the sliding rack flank engagement.Between groove groove bottom and sliding rack bottom surface, reed [2] is housed, to eliminate the back lash of wheel and rack.Respectively there is a screw perpendicular to the flank of tooth at middle part at place, sliding rack outer end, and disposes pole [4] and cross frame [10], there is a circular hole at the non-threaded end place of pole, slide bar [6] is housed in it, and, the screw [5] that the tightening slide bar is used is housed at circular hole one longitudinal end.Cross frame is made up of lower beam and two parts of crosshead, and at its connecting place, the lower beam upper end has groove, and the upper boom lower end is the boss that matches with groove, and both are rotationally connected through locating shaft [9] composition.One end of locating shaft has the thread segment that stretches out the cross frame hypomere, and set nut is housed on it.Cross-bar on the crosshead, its center that crosses is rotationally connected through the straight pin composition.Above the crosshead of launching, support board [8] is arranged through screw device.During use, this lecture experiment platform setting or accumbency magnetic can be affixed on the metal blackboard panel, turn gear, sliding rack can be up and down or move left and right, measuring tool and measured object are buckled on slide bar or support board, regulate the position of slide bar and support board, both can carry out the every lecture experiment that to finish.
Claims (2)
1, a kind of magnetic paster type lecture experiment platform, comprise magnet base [1], two sliding racks [3], two respectively with sliding rack meshed gears [7], the one side that it is characterized in that magnet base has longitudinal fluting, its bottom surface longitudinally is installed with at least two blocks of magnet [11], two sliding racks are contained in the groove, on the sidewall of vertical two proximal ends of groove, two groups of corresponding concave stations that stretch out outside groove are arranged, two gears are installed in respectively in the lateral support hole of corresponding concave station, and with the sliding rack flank engagement, for eliminating the back lash of wheel and rack, reed [2] is housed between groove groove bottom and sliding rack bottom surface, respectively there is a screw perpendicular to the flank of tooth at middle part at place, the nearly outer end of sliding rack, and disposes pole [4] and cross frame [10], there is a circular hole at pole other end place, slide bar [6] is housed in it, and a longitudinal end of circular hole is equipped with the holding screw [5] of locking slide bar, and there is support board [8] top of cross frame through screw device.
2, according to right 1 described magnetic paster type lecture experiment platform, it is characterized in that cross frame [10] is made up of lower beam and crosshead two parts, and form through locating shaft [9] and to be rotationally connected, and be provided with latch mechanism, its center that crosses of cross-bar is rotationally connected through the straight pin composition, realizes taking down the exhibits of cross-bar, described slide bar [6], the center of its epimere has the round platform of protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238412 CN2217826Y (en) | 1994-10-17 | 1994-10-17 | Magnetic close-keeping type demonstration test table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94238412 CN2217826Y (en) | 1994-10-17 | 1994-10-17 | Magnetic close-keeping type demonstration test table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2217826Y true CN2217826Y (en) | 1996-01-17 |
Family
ID=33845836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94238412 Expired - Fee Related CN2217826Y (en) | 1994-10-17 | 1994-10-17 | Magnetic close-keeping type demonstration test table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2217826Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463724C (en) * | 2007-01-22 | 2009-02-25 | 郝建波 | Experiment table for teaching and demonstration |
| CN104575187A (en) * | 2015-01-30 | 2015-04-29 | 王振环 | Kinetics study apparatus of vertical plane |
-
1994
- 1994-10-17 CN CN 94238412 patent/CN2217826Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463724C (en) * | 2007-01-22 | 2009-02-25 | 郝建波 | Experiment table for teaching and demonstration |
| CN104575187A (en) * | 2015-01-30 | 2015-04-29 | 王振环 | Kinetics study apparatus of vertical plane |
| CN104575187B (en) * | 2015-01-30 | 2017-02-22 | 青岛农业大学 | Kinetics study apparatus of vertical plane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |