CN104464494A - Teaching analyzing instrument of planar linkage mechanism - Google Patents
Teaching analyzing instrument of planar linkage mechanism Download PDFInfo
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- CN104464494A CN104464494A CN201410826027.6A CN201410826027A CN104464494A CN 104464494 A CN104464494 A CN 104464494A CN 201410826027 A CN201410826027 A CN 201410826027A CN 104464494 A CN104464494 A CN 104464494A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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Abstract
The invention belongs to the technical field of teaching instruments, and relates to a teaching analyzing instrument of a planar linkage mechanism to solve the problems that an existing teaching tool display cabinet can only be statically displayed, a dynamic demonstration teaching tool is low in knowledge integration level and large in size, explaining in class cannot be easily carried out, and according to the existing teaching tool, the quick-return characteristics of the mechanism and the relation between the eccentric distance and the moving situation of a crank mechanism cannot be effectively studied. The teaching analyzing instrument comprises a first planar linkage mechanism converting and moving characteristic studying unit for carrying out four-bar mechanism conversion through rod length adjustment, a second planar linkage mechanism converting and moving characteristic studying unit and a third four-bar mechanism typical application demonstration unit, the eccentric distance is adjusted through a lifting frame, the relation of the changing of the eccentric distance and the mechanism moving situation is studied through the second planar linkage mechanism converting and moving characteristic studying unit , and the third four-bar mechanism typical application demonstration unit is used for studying the combined movement of a plurality of typical mechanisms. The three parts are installed on an aluminum profile bottom plate.
Description
Technical field
The present invention relates to a kind of teaching aid, particularly relate to the structure analysis of a kind of mechanical subject planar linkage mechanism and teaching aid is probed in motion, belong to the technical fields such as planar linkage, mechanical subject teaching, Popular Science Education exhibition.
Background technology
China's contemporary education man Xun condition once proposed: " education should based on ' smell ', if he says not hear or not it, if newss do not see it ... newss and lose, must be wrong though win, see and do not know, though knowledge must be absurd ".The primary form of teaching of modern mechanical discilpline education is combined with laboratory practices at theory teaching, cultivates student that is all-round developing, that have spirit of exploration and creativity.Vividly, intuitively, the mechanical subject teaching aid of image, student can be helped to set up perceptual knowledge directly perceived, and guiding student is observed teaching aid, analysis and thinking, asks a question and therefrom learns the method for dealing with problems.
Planar linkage mechanism is a kind of application mechanism very widely, and the student of the mechanical subject of many firm contacts gets started with this, and " mechanical principle " course it can be used as one of important knowledge point to lecture.Because student steps into mechanical field not have practical experience for the first time, planar linkage mechanism is not also understood, spatial model is not formed in brains, shortcoming is compared in spatial abstraction thinking, so teacher on classroom only term say and separate the device structure never met of those students and its course of action, often teacher says to obtain mouth parched and tongue scorched, student listen in cloud in mist, hear last or do not understand, making the study of student to mechanical subject lose confidence.Therefore, be starved of reinforcement Direct-viewing Teaching in teaching, Direct-viewing Teaching is the important channel of learning planar linkage mechanism well, and corresponding object visual is the important means of experimental teaching.
And existing teaching tool for plane connecting rod mechanism great majority can only be positioned over laboratory, classroom can not be brought into and to do to student while explanation knowledge point and show timely; When the long sum condition of checking bar, student must use measurer manual measurement bar long; Conventional display cabinet can only do the static display of typical mechanism; Existing teaching aid can not represent the relation between the quickreturn characteristics of mechanism and slider-crank mechanism eccentric throw and motion conditions effectively, and make student can only rest on the reasoning of formula to the understanding of these concepts with in analysis, study gets up to feel more difficult; On market, some can realize the planar linkage teaching aid of dynamic demonstration, and supporting electronic circuitry part is too complicated, bulky, and explanation knowledge point integrated level is low, and cost performance is low.
In order to improve the learning efficiency of planar linkage mechanism, the manipulative ability of training student and exploring spirit are simple, portable, efficient, to integrate demonstration very necessary with the planar linkage teaching aid starting to probe into.Can be used for the popularization exhibitions places such as science and technology center simultaneously and carry out mechanical displaying, improve the attractive force of mechanical exhibition.
Summary of the invention
The invention provides a kind of planar linkage mechanism instruction analysis instrument, fundamental purpose is not easily brought classroom into carry out explaining with hall for solving existing teaching aid, teaching aid showcase can only carry out static display, student's troublesome poeration during existing double leval jib change teaching aid experiment, now lack quick-return characteristics of planar linkage in the lab, the experiment teaching aid that the knowledge points, aspect such as slider-crank mechanism eccentric throw and kinetic characteristic relation are probed into, on market, existing dynamic demonstration teaching aid Knowledge Aggregation degree is low, bulky, cost performance is low, the planar linkage that in exhibition center, science popularization is shown, mechanism is single, lack the problems such as attractive force.The present invention mainly explain double leval jib conversion, probe into crank existent condition, correct decision mechanism quickreturn characteristics, the knowledge of the aspects such as the typical apply of the drive line angle of the dead-centre position of handgrip body, mechanism and pressure angle and multiple four-bar mechanism.
To achieve these goals, the present invention mainly comprises three parts: Part I is that the conversion of lanar four rod mechanism and kinetic characteristic probe into unit, this part is Non-follow control completely, by regulating the length of four-bar mechanism mid frame and active side link, reaches the effect of four bars conversion; Part II is that the kinetic characteristic of slider-crank mechanism probes into unit, this portion body be one can the slider-crank mechanism of eccentric adjustment distance, drive the motion of driving crank with a direct current generator, carry out eccentric adjustment distance with crane, observe the change of eccentric throw and the relation of mechanism kinematic situation; Part III is the typical apply demonstration unit of four-bar mechanism, this part chooses some typical four-bar mechanism performance models, wherein there are crank block engine cylinder model, crank rocker transverse planing machine model, double rocking lever He Shi crane model, three models only have an input, are realized the shunting of power by a bent axle.It is on base plate that described three parts are arranged on aluminium section bar.
Conversion and the kinetic characteristic of described lanar four rod mechanism probe into unit, and this element comprises hand disk 1, side link 1, side link 2, connecting rod 1, frame 1, length scales 1, length scales 2, bracing frame 1, bracing frame 2, bracing frame 3, change bar long-term job moves screw-nut.Described hand disk is fixed on described base plate by bracing frame 1, and described frame is fixed on base plate by bracing frame 2, bracing frame 3.The hand disk 1 of hand rotation band handle, drives the side link 1 with its hinge by disk, thus drives the link rotatable with side link 1 hinge, thus drive is rotated with the side link 2 of connecting rod link.
Conversion and the kinetic characteristic of described lanar four rod mechanism probe into unit, and the function changing side link 1 and frame length is overlapped the active screw nut realization that can freely tighten by the side link 1 of trough of belt, the frame, two of trough of belt.Screw is connected with the special nut of another side through the bar of trough of belt, tighten the ad-hoc location that nut can be fixed on band channel bar by screw, the rod member needing to connect is connected with the special nut pin after band channel bar, so just achieve and need connecting link and the connection of being with channel bar, and the long change of the bar of band channel bar.The length variations scope of frame is 40-150mm, side link variation range is 30-100mm, the length value of bar can be read by the length scales that bar is pasted.
Conversion and the kinetic characteristic of described lanar four rod mechanism probe into unit, mainly probe into the knowledge points such as four-bar mechanism conversion, mechanism's quickreturn characteristics.When probing into four-bar mechanism conversion, the length of side link 1 and frame is regulated successively by the long traveling nut of described change bar, the conversion of double-crank, crank rocker, double rocker mechanism can be realized, record rod member length, thus probe into structure and the kinetic characteristic of different institutions.When probing into quickreturn characteristics, changing bar length is crank and rocker mechanism by mechanism alternation, and rotate hand disk 1, when can observe side link 1 uniform rotation, the speed of side link 2 reciprocating swing is sometimes fast and sometimes slow, and the urgency being mechanism returns phenomenon.
The kinetic characteristic of described slider-crank mechanism probes into unit, and this element comprises hand disk 2, screw mandrel, special nut, guide rail 1, crane, guide rail 2, slide block, connecting rod 2, disk, motor 1, supporting seat 1, supporting seat 2, supporting seat 3, supporting seat 4, height gauge.Described motor is 12V direct current generator, is fixed on base plate by supporting seat 1, is connected with disk 1 simultaneously.Described hand disk 2 and screw mandrel are connected, and screw mandrel is supported by the supporting seat 3 fixed with base plate, supporting seat 4.Described special nut coordinates with screw mandrel, and special nut and guide rail 1 top shoe 1 are connected simultaneously.Described crane, while be connected with special nut, is connected with base plate.Described guide rail 1 is connected with base plate, and guide rail 2 and crane upper end are connected, and slide block 2 coordinates with guide rail 2, simultaneously slide block and connecting rod 2 hinge, and connecting rod 2 and disk hinge, disk is fixed on base plate by supporting seat 4.
The kinetic characteristic of described slider-crank mechanism probes into unit, mainly probes into the kinetic characteristic change of crank and rocker mechanism during crank block eccentric throw.Shake hand disk, drive crane to move up and down by screw mandrel, adjust eccentric throw by the guide rail 2 be connected with crane, eccentric throw can be read by height gauge, eccentric throw range of adjustment-15mm to 60mm.By motor 1 disc rotated, thus whole crank rocker slide block mechanism is driven to move.Thus the impact that the different eccentric throw of observed and recorded is moved on slider-crank mechanism.
The typical apply demonstration unit of described four-bar mechanism, this element comprises crank and rocker mechanism, guide-bar mechanism, slider-crank mechanism, supporting seat, motor 2.Described crank and rocker mechanism, guide-bar mechanism, slider-crank mechanism are fixed on base plate by supporting seat.Described motor 2 is 12V direct current generator, is fixed on base plate by supporting seat, and the power be connected as whole unit with connecting rod 3 inputs.Slider-crank mechanism is connected with optical axis 1 with the driving link of guide-bar mechanism, the driving link of crank and rocker mechanism and connecting rod 4 hinge, connecting rod 4 and guide-bar mechanism driving link hinge.
The typical apply demonstration unit of described four-bar mechanism, the motion conditions of main demonstration crank block engine cylinder model, crank rocker transverse planing machine model, double rocking lever He Shi crane model.Rotate with motor 2 drivening rod 3, thus crank and rocker mechanism described in driving, guide-bar mechanism, slider-crank mechanism motion, thus the movement characteristic of mechanism can be seen intuitively.
Beneficial effect:
1, the light volume of quality of the present invention is little is easy to carry, and solves existing teaching tool for plane connecting rod mechanism great majority and can only be positioned over laboratory, can not bring classroom into and do the problem of showing in time to student while explanation knowledge point.
2, the present invention change bar long time bar length can directly be read by height gauge, solve when verifying the long sum condition of bar, the problem that student must use measurer manual measurement bar long.
3, dynamic of the present invention is demonstrated and is started to probe into mechanism kinematic situation, solves the problem that conventional display cabinet can only do the static display of typical mechanism.
4, the present invention's visual in image quickreturn characteristics representing mechanism of energy and the relation between slider-crank mechanism eccentric throw and motion conditions, solve these two aspects and there is no object visual, student can only rest on the reasoning of formula with in analysis to the understanding of these concepts, the problem that learning difficulty is larger.
5, structure of the present invention is simplified, to explain knowledge point integrated level high, solves on market that some can realize the planar linkage teaching aid of dynamic demonstration, and supporting electronic circuitry part is too complicated, bulky, and explanation knowledge point integrated level is low, the problem that cost performance is low.
6, the present invention is arranged on the aluminium section bar base plate with multiple installation groove, and dismounting is convenient, facilitates student to carry out starting to probe into.
7, present invention encompasses all basic structure in planar linkage mechanism, adopt many Mechanism Combinations can save space and improve integrated level, can the structure made new advances be combined simultaneously, inspire the innovative thinking of student.
8, collecting mechanism of the present invention is demonstrated and is started to probe in one, and the demonstration mode of novel image can motivate students' interest in learning, and understanding complicated abstract concept, improving learning efficiency by starting to probe into help student.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is that the conversion of lanar four rod mechanism of the present invention and kinetic characteristic probe into cell schematics;
Fig. 3 is that the kinetic characteristic of slider-crank mechanism of the present invention probes into cell schematics;
Fig. 4 is the typical apply demonstration unit schematic diagram of four-bar mechanism of the present invention;
Wherein: conversion and the kinetic characteristic of 1-lanar four rod mechanism probe into unit, and the kinetic characteristic of 2-slider-crank mechanism probes into unit, the typical apply demonstration unit of 3-four-bar mechanism, 4-base plate.
101-hand disk 1,102-side link 1,103-length scales 1,104-changes the long traveling nut 1 of bar, 105-connecting rod 1,106-length scales 2,107-side link 2,108-frame, 109-changes long traveling nut 2, the 110-bracing frame A3 of bar, 111-bracing frame A1,112-bracing frame A2.
201-hand disk 2,202-guide rail 1,203-screw mandrel, 204-slide block 1,205-special nut, 206-crane, 207-guide rail 2,208-slide block 2,209-motor 1,210-connecting rod 2,211-disk, 212-supporting seat B1,213-supporting seat B2,214-supporting seat B3,215-height gauge 1,216-supporting seat B4.
301-motor 2,302-supporting seat C1,303-shaft coupling, 304-minor axis, 305-gear case, 306-bevel gear pair, 307-supporting seat C2,308-supporting seat C3,309-double rocker mechanism bar 3,310-double rocker mechanism bar 2,311-double rocker mechanism bar 1,312-drive link 2,313-supporting seat C4,314-drive link 1,315-guide-bar mechanism bar 1,316-slider-crank mechanism bar 1,317-guide-bar mechanism bar 2,318-slider-crank mechanism cylinder, 319-supporting seat C6,320-guide-bar mechanism bar 3,321-supporting seat C5.
Embodiment
Below in conjunction with accompanying drawing, implementation method of the present invention is further illustrated.
See accompanying drawing 1, the conversion and the kinetic characteristic that the present invention includes lanar four rod mechanism probe into unit, the kinetic characteristic of slider-crank mechanism probes into unit, the typical apply demonstration unit of four-bar mechanism, base plate.Described three unit are fixed on base plate.
See accompanying drawing 2, conversion and the kinetic characteristic of described lanar four rod mechanism probe into unit, comprise: hand disk 1 (101), side link 1 (102), length scales 1 (103), change the traveling nut 1 (104) that bar is long, connecting rod 1 (105), length scales 2 (106), side link 2 (107), frame (108), change the traveling nut 2 (109) that bar is long, bracing frame A3 (110), bracing frame A1 (111), bracing frame A2 (112).Described hand disk 1 (101) is fixed on described base plate (4) by bracing frame A1 (111), and described frame (108) is fixed on base plate (4) by bracing frame A2 (112), bracing frame A3 (110).Described side link 1 (102) is connected with hand disk 1 (101), and the screw changed in the long traveling nut 1 (104) of bar passes groove and the nut screw connection of side link 1 (102).Described connecting rod 1 (105) one end and nut hinge, one end hinge of the other end and side link 2 (107).The nut hinge of the other end of side link 2 (107) and the traveling nut 2 (109) of change bar length, the screw changing the long traveling nut 2 (109) of bar passes groove and the nut screw connection of frame (108).Unscrew and change the long active screw nut of bar, move in the groove on bar, then tighten that just to change bar long, realize the conversion of four-bar mechanism.Rotate hand disk 1 (101) and whole mechanism kinematic can be driven.
See accompanying drawing 3, the kinetic characteristic of described slider-crank mechanism probes into unit, comprise: hand disk 2 (201), guide rail 1 (202), screw mandrel (203), slide block 1 (204), special nut (205), crane (206), guide rail 2 (207), slide block 2 (208), motor 1 (209), connecting rod 2 (210), disk (211), supporting seat B1 (212), supporting seat B2 (213), supporting seat B3 (214), height gauge 1 (215), supporting seat B4 (216).Described motor 1 (209) is 12V direct current generator, is fixed on base plate (4) by supporting seat B1 (212), is connected with disk (211) simultaneously.Described hand disk 2 (201) and screw mandrel (203) are connected, and screw mandrel (203) is supported by supporting seat B3 (214), the supporting seat B4 (216) be connected with base plate (4).Described special nut (205) coordinates with screw mandrel (203), special nut (205) is connected with the slide block 1 (204) that guide rail 1 (202) coordinates simultaneously, and guide rail 1 (202) and base plate (4) are connected.Described crane (206), while be connected with special nut (205), is connected with base plate (4).Described guide rail 2 (207) is connected with crane (206) upper end, slide block 2 (208) coordinates with guide rail 2 (207), slide block 2 (208) and connecting rod 2 (210) hinge simultaneously, connecting rod 2 (210) and disk (211) hinge, disk (211) is fixed on base plate (4) by supporting seat B2 (213).Rotate the height that hand disk 2 (201) can change crane (206), thus regulate the eccentric throw of slider-crank mechanism, connect motor 1 (209) and whole mechanism kinematic can be driven.
See accompanying drawing 4, the typical apply demonstration unit of described four-bar mechanism, comprise: motor 2 (301), supporting seat C1 (302), shaft coupling (303), minor axis (304), gear case (305), bevel gear is to (306), supporting seat C2 (307), supporting seat C3 (308), double rocker mechanism bar 3 (309), double rocker mechanism bar 2 (310), double rocker mechanism bar 1 (311), drive link 2 (312), supporting seat C4 (313), drive link 1 (314), guide-bar mechanism bar 1 (315), slider-crank mechanism bar 1 (316), guide-bar mechanism bar 2 (317), slider-crank mechanism cylinder (318), supporting seat C6 (319), guide-bar mechanism bar 3 (320), supporting seat C5 (321).Described motor 2 (301) is 12V direct current generator, be fixed on base plate (4) by supporting seat C1 (302), be connected by shaft coupling (303) and minor axis (304), minor axis (304) and bevel gear are connected to (306), bevel gear is in (306) fixed teeth roller box (305), gear case (305) is fixed on base plate (4), drive link 1 (314) and the output gear of bevel gear to (306) are connected, and are fixed on base plate (4) by supporting seat C2 (307) and supporting seat C4 (313).Described drive link 1 (314) is through the groove of guide-bar mechanism bar 1 (315), guide-bar mechanism bar 1 (315) and guide-bar mechanism bar 2 (317) hinge, guide-bar mechanism bar 2 (317) and guide-bar mechanism bar 3 (320) hinge, guide-bar mechanism bar 3 (320) is through the through hole of supporting seat C5 (321), and supporting seat C5 (321) and base plate (4) are connected.Described drive link 1 (314) and slider-crank mechanism bar 1 (316) hinge, slider-crank mechanism bar 1 (316) coordinates with slider-crank mechanism cylinder (318), and slider-crank mechanism cylinder (318) is connected with base plate (4) by supporting seat C6 (319).Described drive link 2 (312) and drive link 1 (314) hinge, drive link 2 (312) and double rocker mechanism bar 1 (311) hinge, double rocker mechanism bar 1 (311) one end and double rocker mechanism bar 2 (310) hinge, the other end and supporting seat C3 (308) hinge, double rocker mechanism bar 3 (309) one end and double rocker mechanism bar 2 (310) hinge, the other end and supporting seat C3 (308) hinge, supporting seat C3 (308) and base plate (4) are connected.Be communicated with motor 2 (301), by a whole mechanism kinematic of driven by motor, show the typical apply of four-bar mechanism.
Claims (7)
1. planar linkage mechanism instruction analysis instrument, it is characterized in that: the conversion of lanar four rod mechanism and kinetic characteristic probe into unit, the kinetic characteristic of slider-crank mechanism probes into unit, the typical apply demonstration unit of four-bar mechanism, described three unit are fixed on base plate.
2. planar linkage mechanism instruction analysis instrument according to claim 1, it is characterized in that: the conversion of lanar four rod mechanism and kinetic characteristic are probed in unit, described hand disk 1 (101) is fixed on described base plate (4) by bracing frame A1 (111), described frame (108) is by bracing frame A2 (112), bracing frame A3 (110) is fixed on base plate (4), described side link 1 (102) is connected with hand disk 1 (101), the screw changed in the long traveling nut 1 (104) of bar passes groove and the nut screw connection of side link 1 (102), described connecting rod 1 (105) one end and nut hinge, one end hinge of the other end and side link 2 (107), the other end and the nut hinge changing the long traveling nut 2 (109) of bar of side link 2 (107), the screw changing the long traveling nut 2 (109) of bar passes groove and the nut screw connection of frame (108).
3. planar linkage mechanism instruction analysis instrument according to claim 1, it is characterized in that: the kinetic characteristic of slider-crank mechanism is probed in unit, described motor 1 (209) is 12V direct current generator, be fixed on base plate (4) by supporting seat B1 (212), be connected with disk (211) simultaneously, described hand disk 2 (201) is connected with screw mandrel (203), screw mandrel (203) is by the supporting seat B3 (214) be connected with base plate (4), supporting seat B4 (216) supports, described special nut (205) coordinates with screw mandrel (203), special nut (205) is connected with the slide block 1 (204) that guide rail 1 (202) coordinates simultaneously, guide rail 1 (202) and base plate (4) are connected, described crane (206) is while be connected with special nut (205), while be connected with base plate (4), described guide rail 2 (207) is connected with crane (206) upper end, slide block 2 (208) coordinates with guide rail 2 (207), slide block 2 (208) and connecting rod 2 (210) hinge simultaneously, connecting rod 2 (210) and disk (211) hinge, disk (211) is fixed on base plate (4) by supporting seat B2 (213).
4. planar linkage mechanism instruction analysis instrument according to claim 1, it is characterized in that: in the typical apply demonstration unit of four-bar mechanism, described motor 2 (301) is 12V direct current generator, be fixed on base plate (4) by supporting seat C1 (302), be connected by shaft coupling (303) and minor axis (304), minor axis (304) and bevel gear are connected to (306), bevel gear is in (306) fixed teeth roller box (305), gear case (305) is fixed on base plate (4), drive link 1 (314) and the output gear of bevel gear to (306) are connected, be fixed on base plate (4) by supporting seat C2 (307) and supporting seat C4 (313), described drive link 1 (314) is through the groove of guide-bar mechanism bar 1 (315), guide-bar mechanism bar 1 (315) and guide-bar mechanism bar 2 (317) hinge, guide-bar mechanism bar 2 (317) and guide-bar mechanism bar 3 (320) hinge, guide-bar mechanism bar 3 (320) is through the through hole of supporting seat C5 (321), supporting seat C5 (321) and base plate (4) are connected, described drive link 1 (314) and slider-crank mechanism bar 1 (316) hinge, slider-crank mechanism bar 1 (316) coordinates with slider-crank mechanism cylinder (318), slider-crank mechanism cylinder (318) is connected with base plate (4) by supporting seat C6 (319), described drive link 2 (312) and drive link 1 (314) hinge, drive link 2 (312) and double rocker mechanism bar 1 (311) hinge, double rocker mechanism bar 1 (311) one end and double rocker mechanism bar 2 (310) hinge, the other end and supporting seat C3 (308) hinge, double rocker mechanism bar 3 (309) one end and double rocker mechanism bar 2 (310) hinge, the other end and supporting seat C3 (308) hinge, supporting seat C3 (308) and base plate (4) are connected.
5. planar linkage mechanism instruction analysis instrument according to claim 1, it is characterized in that: unscrew the long-term job of change bar and move screw-nut, move in groove on bar, then tighten that just to change bar long, realize the conversion of four-bar mechanism, the length of bar can be read by the length scales on bar, rotates hand disk 1 (101) and can drive whole mechanism kinematic.
6. planar linkage mechanism instruction analysis instrument according to claim 1, it is characterized in that: the kinetic characteristic of slider-crank mechanism is probed in unit, rotate the height that hand disk 2 (201) can change crane (206), thus regulate the eccentric throw of slider-crank mechanism, connect motor 1 (209) and whole mechanism kinematic can be driven.
7. planar linkage mechanism instruction analysis instrument according to claim 1, is characterized in that: be communicated with motor 2 (301), by a whole mechanism kinematic of driven by motor, can show the typical apply of four-bar mechanism.
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| CN105788436A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane linkage combined type teaching aid |
| CN105788437A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane mechanism combined type teaching aid |
| CN105788435A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal crank guide rod slide block mechanism combined type teaching aid |
| CN107103831A (en) * | 2017-06-30 | 2017-08-29 | 西安科技大学 | A kind of mechanical principle teaching experimental provision |
| CN107293207A (en) * | 2017-07-19 | 2017-10-24 | 西安航空学院 | A kind of vertical crank guide rod slide block mechanism test table |
| CN107389330A (en) * | 2017-08-15 | 2017-11-24 | 武汉科技大学 | A kind of combined four-bar linkage experimental provision of clearance-type |
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