CN204066580U - A kind of experiment table for teaching and demonstration - Google Patents

A kind of experiment table for teaching and demonstration Download PDF

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Publication number
CN204066580U
CN204066580U CN201420423164.0U CN201420423164U CN204066580U CN 204066580 U CN204066580 U CN 204066580U CN 201420423164 U CN201420423164 U CN 201420423164U CN 204066580 U CN204066580 U CN 204066580U
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China
Prior art keywords
connecting rod
gear
bolt
external thread
track
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Expired - Fee Related
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CN201420423164.0U
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Chinese (zh)
Inventor
李金泉
陶军
刘迟
蒋伟
王彦
陈琳
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Shenyang Ligong University
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Shenyang Ligong University
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Priority to CN201420423164.0U priority Critical patent/CN204066580U/en
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Publication of CN204066580U publication Critical patent/CN204066580U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of experiment table for teaching and demonstration, comprise frame, drawing board, Track Pick-up mechanism, track creator, Track Pick-up mechanism is spiral adjustable gear five bar combined mechanism, is made up of intermeshing first gear, the second gear, the 3rd gear and upper left connecting rod, left lower link, upper right connecting rod, bottom right connecting rod.The lower end of left lower link, bottom right connecting rod is connected with the wheel shaft of the second gear, the 3rd gear respectively, the upper end of left lower link and bottom right connecting rod is hinged with the lower end of upper left connecting rod and upper right connecting rod respectively, upper left connecting rod is connected by hinge axis with upper right side, paintbrush is installed on hinge axis by the first track creator, is installed on connecting rod by the second track creator.The utility model can exempt from dismounting regulating connecting rod length online, and can draw link motion geometric locus in real time on drawing board, visual in image, the grasp linkage assembly making student more deep realizes the kinetic characteristic of desired trajectory.

Description

A kind of experiment table for teaching and demonstration
Technical field
The utility model relates to a kind of teaching aid, particularly relates to a kind of experiment table for teaching and demonstration.
Background technology
Planar linkage mechanism experiment table for teaching and demonstration is widely used in each colleges and universities, but when at present planar linkage mechanism experiment table needs regulating connecting rod length, spanner dismounting again must be used, very inconvenient, lose time, and the kinetic characteristic demonstration that linkage assembly realizes desired trajectory cannot real-time rendering coupler-point curve, not visual pattern, is not easy to the understanding of student.
Utility model content
The purpose of this utility model, be to provide a kind of experiment table for teaching and demonstration, the utility model devises spiral adjustable plane link mechanism for above deficiency, can without the need to dismantling online step-less adjustment length of connecting rod, easy to use, efficiency is high, and devise link trajectory maker, be arranged on connecting rod, devising can the drawing board of real-time rendering link motion track simultaneously, visual in image, the grasp linkage assembly making student more deep realizes the kinetic characteristic of desired trajectory.
The technical scheme adopted is:
A kind of experiment table for teaching and demonstration, comprises frame, Track Pick-up drawing board, Track Pick-up mechanism, the first track creator or the second track creator and motor, it is characterized in that:
Frame, comprise end floor beam, lower end floor beam, left side column, right side uprights, five intermediate columns and base, left side column, right side uprights upper end are fixedly connected with upper end floor beam with bolt respectively, left side column is fixedly connected with lower end floor beam with bolt respectively with the lower end of right side uprights, and left side column, right side uprights, upper end floor beam and lower end floor beam jointly form a framework and base bolt is fixed together.
Upper end floor beam laterally offers the first translot, and lower end floor beam laterally offers the second translot, and five intermediate columns are vertically arranged, and the upper end of five intermediate columns is fixed by nut through after the first translot respectively by the first body of bolt; The lower end of five intermediate columns is fixed with nut through after the second translot respectively by the second body of bolt.Therefore, loosen the lateral separation between the first body of bolt and adjustable five intermediate columns of the second body of bolt, be convenient to different Track Pick-up mechanisms is installed.Each intermediate column is provided with multiple slide block, and slide block along the upper and lower slip of intermediate column, can be located by bolt tightening after sliding into desired location, each slide block has installation through hole.
Track Pick-up drawing board upper end is embedded in the groove of upper connector, the upper connector other end is connected with bolt with one end of upper bracket, the other end bolt of upper bracket is fixedly connected with upper end floor beam, Track Pick-up drawing board lower end is embedded in the groove of lower web member, the other end of lower connecting plate is connected with bolt with one end of lower carriage, and the other end of lower carriage is fixedly connected with base.
Track Pick-up mechanism, is spiral adjustable gear five bar combined mechanism, comprises three gear mechanisms and spiral adjustable linkage mechanism.Three gear mechanisms, comprise the first gear, the second gear and the 3rd gear, the wheel shaft of the second gear, the first gear and the 3rd gear is connected through the installation through hole on the slide block on a corresponding intermediate column, and the first gear respectively with the second gear and the 3rd gears meshing.
Spiral adjustable linkage mechanism, comprises upper left connecting rod, left lower link, upper right connecting rod and bottom right connecting rod, and left lower link is connected respectively by the wheel shaft of bolt with the second gear and the 3rd gear with the lower end of bottom right connecting rod.The upper end of left lower link and bottom right connecting rod is respectively by bolt and upper left connecting rod and upper right rod hinge connection.
Upper left connecting rod is connected by hinge axis with the upper end of upper right connecting rod.Paintbrush is connected with hinge axis by track creator.
Upper left connecting rod, left lower link and upper right connecting rod, bottom right connecting rod is structurally identical, for upper left connecting rod, connecting rod left end is left-handed transmission external thread rod, right-hand member is clockwise drive external thread rod, centre is a hollow regulating sleeve, regulating sleeve left end is processed into left-handed transmission internal thread, screw in the left-handed transmission external thread rod of connecting rod and coordinate, regulating sleeve right-hand member is processed into clockwise drive internal thread, screw in connecting rod clockwise drive external thread rod and coordinate, in order to avoid left-handed transmission external thread rod and clockwise drive external thread rod two ends are rotated mutually, left-handed transmission external thread rod and clockwise drive external thread rod are processed a groove respectively, card two ends are embedded in groove respectively, then regulating sleeve is screwed in respectively from left-handed transmission external thread rod and clockwise drive external thread rod two ends, because connecting rod two ends thread rotary orientation is contrary, on-line control bar just can be dismantled so long by rotation intermediate regulations sleeve, rotating intermediate regulations sleeve to a direction makes connecting rod extend, rotating intermediate regulations sleeve to another direction then makes connecting rod shorten, thus reach the object exempting to dismantle online electrodeless regulating connecting rod length.Mechanism is made to have different kinetic characteristics due to the change that bar is long, meanwhile, by regulating each pole length can demonstrate the function that connecting rod can realize desired trajectory easily on drawing board, the understanding make student image, deepening to this part knowledge intuitively.
The first track creator, comprises paintbrush, the pen cap, sleeve, web member, spring.
Paintbrush wringing fit is inserted in the pen cap, pen cap outer rim there is boss, pen cap one end is through sleeve, the pen cap and sleeve form clearance fit, sleeve inside rim is stuck on the boss of pen cap outer rim, the sleeve other end links together in the mode be threaded with web member, at sleeve built with spring, spring upper end withstands on pen cap lower end, lower spring end withstands on web member upper end, web member lower end to screw on hinge axis in internal thread hole, track creator is made directly to be fixedly mounted on linkage assembly hinge point, upper left connecting rod and upper right connecting rod form revolute pair by hinge axis, then by regulating the bar of upper left connecting rod and upper right connecting rod and left lower link and bottom right connecting rod long, drawing board is drawn out different coupler-point curves.
The first belt pulley that motor output shaft is installed is connected by belt with the second belt pulley on the wheel shaft being installed in the 3rd gear.
The utility model can make paintbrush real-time rendering on Track Pick-up drawing board go out coupler-point curve, visual in image, compared by the actual path drawn out and the calculated results, if basic indifference, illustrate reasonable in design, if difference is comparatively large, finds out reason and solve, student is allowed to move towards actual from theory, the ability of exercise student ' solving practical problems.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is connecting rod decomposing schematic representation.
Fig. 5 is connecting rod elongation state schematic diagram.
Fig. 6 is that connecting rod shortens schematic diagram.
Fig. 7 is Track Pick-up drawing board connection diagram.
Fig. 8 is the first track creator structural representation.
Fig. 9 be the first track creator be arranged on upper left connecting rod and upper right connecting rod hinge point on schematic diagram.
Figure 10 is the right view of Fig. 9.
Embodiment
A kind of experiment table for teaching and demonstration, comprises frame 6, Track Pick-up drawing board 4, Track Pick-up mechanism 15, track creator 39 and motor 1, it is characterized in that:
Frame 6, comprise end floor beam 9, lower end floor beam 10, left side column 11, right side uprights 12, five intermediate columns 13 and base 14, left side column 11, right side uprights 12 upper end are fixedly connected with upper end floor beam 9 with bolt respectively, and left side column 11 is fixedly connected with lower end floor beam 10 with bolt respectively with the lower end of right side uprights 12.Left side column 11, right side uprights 12, upper end floor beam 9 and lower end floor beam 10 jointly a composition framework and base 14 are fixed together with bolt.
Upper end floor beam 9 laterally offers the first translot 7, lower end floor beam 10 laterally offers the second translot 8, five intermediate columns 13 are vertically arranged, and the upper end of five intermediate columns 13 is fixed by nut through after the first translot 7 respectively by the first body of bolt 16 of correspondence; The lower end of five intermediate columns 13 is fixed with nut through after the second translot 8 respectively by the second body of bolt 40 of correspondence.Therefore, loosen the lateral separation between the first body of bolt 16 and adjustable five intermediate columns of the second body of bolt 40, be convenient to different Track Pick-up mechanisms is installed.Each intermediate column 13 is provided with multiple slide block 17, and slide block 17 along the upper and lower slip of intermediate column 13, can be located by bolt tightening after sliding into desired location, each slide block 17 has and installs through hole 5.
Track Pick-up drawing board 4 upper end is embedded in the groove of upper connector 20, upper connector 20 other end is connected with bolt 22 with one end of upper bracket 21, the other end bolt 23 of upper bracket 21 is fixedly connected with upper end floor beam 9, Track Pick-up drawing board 4 lower end is embedded in the groove of lower web member 24, the other end of lower web member 24 is connected with bolt with one end of lower carriage 25, and the other end of lower carriage 25 is fixedly connected with bolt with base 14.
Track Pick-up mechanism 15, is spiral adjustable gear five bar combined mechanism, comprises three gear mechanisms and spiral adjustable linkage mechanism.Three gear mechanisms, comprise the first gear 38, second gear 41 and the 3rd gear 42, the wheel shaft of the first gear 38, second gear 41 and the 3rd gear 42 is arranged in the installation through hole 5 on the slide block 17 on a corresponding intermediate column 13, and the first gear 38 engages with the second gear 41 and the 3rd gear 42 respectively.
Spiral adjustable linkage mechanism, comprises upper left connecting rod 36, left lower link 43, upper right connecting rod 37 and bottom right connecting rod 44, and left lower link 43 is connected respectively by the wheel shaft of bolt with the second gear 41 and the 3rd gear 42 with the lower end of bottom right connecting rod 44.The upper end of left lower link 43 and bottom right connecting rod 44 respectively by bolt and upper left connecting rod 36 and upper right connecting rod 37 hinged.
Upper left connecting rod 36 is connected by hinge axis 35 with the upper end of upper right connecting rod 37.Paintbrush 19 is connected with hinge axis 35 by track creator 39.
Left lower link 43, upper left connecting rod 36, bottom right connecting rod 44 and upper right connecting rod 37 are structurally all identical, for upper left connecting rod 36, connecting rod left end is left-handed transmission external thread rod 26, right-hand member is clockwise drive external thread rod 27, centre is a hollow regulating sleeve 28, regulating sleeve 28 left end is processed into left-handed transmission internal thread, screw in the left-handed transmission external thread rod 26 of connecting rod and coordinate, regulating sleeve 28 right-hand member is processed into clockwise drive internal thread, screw in connecting rod clockwise drive external thread rod 27 and coordinate, in order to avoid left-handed transmission external thread rod 26 and clockwise drive external thread rod 27 two ends are rotated mutually, left-handed transmission external thread rod 26 and clockwise drive external thread rod 27 are processed a groove 29 respectively, card 30 two ends are embedded in groove 29 respectively, then regulating sleeve 28 is screwed in respectively from left-handed transmission external thread rod 26 and clockwise drive external thread rod 27 two ends, because connecting rod two ends thread rotary orientation is contrary, on-line control bar just can be dismantled so long by rotation intermediate regulations sleeve 28, rotating intermediate regulations sleeve 28 to a direction makes connecting rod extend, as Fig. 5, rotating 28, intermediate regulations sleeve to another direction makes connecting rod shorten, as Fig. 6, thus reach the object exempting to dismantle online electrodeless regulating connecting rod length.This mechanism has different kinetic characteristics due to the change that bar is long, meanwhile, by regulating each pole length can demonstrate the function that connecting rod can realize desired trajectory easily on drawing board, and the understanding make student image, deepening to this part knowledge intuitively.
Track creator 39, as Fig. 8, comprises the pen cap 31, sleeve 32, web member 33, spring 34.
Paintbrush 19 wringing fit is inserted in the pen cap 31, the pen cap 31 outer rim there is boss, the pen cap 31 one end is through sleeve 32, the pen cap 31 and sleeve 32 form clearance fit, sleeve 32 inside rim is stuck on the boss of the pen cap 31 outer rim, sleeve 32 other end links together in the mode be threaded with the web member 33 with external thread 45, at sleeve 32 built with spring 34, spring 34 upper end withstands on the pen cap 31 lower end, spring 34 lower end withstands on web member 33 upper end, web member 33 lower end has the part of external thread 45 to screw in the internal thread hole on hinge axis 35, track creator 39 is made directly to be fixedly mounted on linkage assembly hinge point, upper left connecting rod 36 and upper right connecting rod 37 form revolute pair by hinge axis 35, as Fig. 9, shown in Figure 10, then by regulating the bar of upper left connecting rod 36 and upper right connecting rod 37 and left lower link 43 and bottom right connecting rod 44 long, drawing board is drawn out different coupler-point curves.
The first belt pulley 3 that motor 1 output shaft is installed is connected by belt 2 with the second belt pulley 18 on the wheel shaft being installed in the 3rd gear 42.

Claims (4)

1. an experiment table for teaching and demonstration, comprises frame (6), Track Pick-up drawing board (4), Track Pick-up mechanism (15), track creator (39) and motor (1), it is characterized in that:
Frame (6), comprise end floor beam (9), lower end floor beam (10), left side column (11), right side uprights (12), five intermediate columns (13) and base (14), left side column (11), right side uprights (12) upper end use bolt to be fixedly connected with upper end floor beam (9) respectively, and left side column (11) and the lower end of right side uprights (12) use bolt to be fixedly connected with lower end floor beam (10) respectively; Left side column (11), right side uprights (12), upper end floor beam (9) and lower end floor beam (10) jointly a composition framework and base (14) are fixed together with bolt;
Upper end floor beam (9) is upper laterally offers the first translot (7), lower end floor beam (10) is upper laterally offers the second translot (8), five intermediate columns (13) are vertically arranged, and the upper end of five intermediate columns (13) is fixed by nut through after the first translot (7) respectively by first body of bolt (16) of correspondence; The lower end of five intermediate columns (13) is fixed with nut through after the second translot (8) respectively by second body of bolt (40) of correspondence; Therefore, loosen the lateral separation between the first body of bolt (16) and adjustable five intermediate columns of the second body of bolt (40), be convenient to different Track Pick-up mechanisms is installed; Each intermediate column (13) is provided with multiple slide block (17), slide block (17) along intermediate column (13) upper and lower slip, can be located by bolt tightening after sliding into desired location, each slide block (17) has installation through hole (5);
Track Pick-up drawing board (4) upper end is embedded in the groove of upper connector (20), upper connector (20) other end is connected with bolt (22) with one end of upper bracket (21), the other end bolt (23) of upper bracket (21) is fixedly connected with upper end floor beam (9), Track Pick-up drawing board (4) lower end is embedded in the groove of lower web member (24), the other end of lower connecting plate (24) is connected with bolt with one end of lower carriage (25), and the other end of lower carriage (25) is fixedly connected with bolt with base (14);
Track Pick-up mechanism (15), for spiral adjustable gear five bar combined mechanism, comprise three gear mechanisms and spiral adjustable linkage mechanism, three gear mechanisms, comprise the first gear (38), the second gear (41) and the 3rd gear (42), the wheel shaft of the first gear (38), the second gear (41) and the 3rd gear (42) is arranged in the installation through hole (5) on the slide block (17) on a corresponding intermediate column (13), and the first gear (38) engages with the second gear (41) and the 3rd gear (42) respectively;
Spiral adjustable linkage mechanism, comprise upper left connecting rod (36), left lower link (43), upper right connecting rod (37) and bottom right connecting rod (44), left lower link (43) is connected respectively by the wheel shaft of bolt with the second gear (41) and the 3rd gear (42) with the lower end of bottom right connecting rod (44), the upper end of left lower link (43) and bottom right connecting rod (44) respectively by bolt and upper left connecting rod (36) and upper right connecting rod (37) hinged;
Upper left connecting rod (36) is connected by hinge axis (35) with the upper end of upper right connecting rod (37), and paintbrush (19) is connected with hinge axis (35) by track creator (39).
2. a kind of experiment table for teaching and demonstration according to claim 1, it is characterized in that described left lower link (43), upper left connecting rod (36), bottom right connecting rod (44) is structurally identical with upper right connecting rod (37), upper left connecting rod (36) left end is left-handed transmission external thread rod (26), right-hand member is clockwise drive external thread rod (27), centre is a hollow regulating sleeve (28), regulating sleeve (28) left end is processed into left-handed transmission internal thread, screw in the left-handed transmission external thread rod (26) of connecting rod and coordinate, regulating sleeve (28) right-hand member is processed into clockwise drive internal thread, screw in connecting rod clockwise drive external thread rod (27) and coordinate,
The first belt pulley (3) that described motor (1) output shaft is installed is connected by belt (2) with the second belt pulley (18) on the wheel shaft being installed in the 3rd gear (42).
3. a kind of experiment table for teaching and demonstration according to claim 2, it is characterized in that described left-handed transmission external thread rod (26) and clockwise drive external thread rod (27) process a groove (29) respectively, card (30) two ends are embedded in groove (29) respectively, and regulating sleeve (28) screws in respectively from left-handed transmission external thread rod (26) and clockwise drive external thread rod (27) two ends.
4. a kind of experiment table for teaching and demonstration according to claim 1 and 2, is characterized in that:
The first track creator (39), comprises the pen cap (31), sleeve (32), web member (33), spring (34);
Paintbrush (19) closely cooperates and inserts in the pen cap (31), the pen cap (31) outer rim there is boss, the pen cap (31) one end is through sleeve (32), the pen cap (31) and sleeve (32) form clearance fit, sleeve (32) inside rim is stuck on the boss of the pen cap (31) outer rim, sleeve (32) other end links together in the mode be threaded with the web member (33) with external thread (45), at sleeve (32) built with spring (34), spring (34) upper end withstands on the pen cap (31) lower end, spring (34) lower end withstands on web member (33) upper end with external thread (45), the external thread (45) of web member (33) lower end screws in the internal thread hole on hinge axis (35), track creator (39) is directly fixedly mounted on linkage assembly hinge point.
CN201420423164.0U 2014-07-30 2014-07-30 A kind of experiment table for teaching and demonstration Expired - Fee Related CN204066580U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104200736A (en) * 2014-07-30 2014-12-10 沈阳理工大学 Teaching demonstration experiment table
CN112908118A (en) * 2021-02-01 2021-06-04 曲靖师范学院 Spiral mathematical education demonstrator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104200736A (en) * 2014-07-30 2014-12-10 沈阳理工大学 Teaching demonstration experiment table
CN112908118A (en) * 2021-02-01 2021-06-04 曲靖师范学院 Spiral mathematical education demonstrator
CN112908118B (en) * 2021-02-01 2023-01-31 曲靖师范学院 Spiral mathematical education demonstrator

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141231

Termination date: 20150730

EXPY Termination of patent right or utility model