CN203759971U - Experimental device for theory of mechanism - Google Patents
Experimental device for theory of mechanism Download PDFInfo
- Publication number
- CN203759971U CN203759971U CN201420105860.7U CN201420105860U CN203759971U CN 203759971 U CN203759971 U CN 203759971U CN 201420105860 U CN201420105860 U CN 201420105860U CN 203759971 U CN203759971 U CN 203759971U
- Authority
- CN
- China
- Prior art keywords
- driven shaft
- traffic cycle
- fixed
- crank
- cam
- 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
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model provides an experimental device for the theory of mechanism. The device realizes clockwise rotation and counterclockwise rotation of different parts on the same shaft by using a unidirectional driving characteristic of a flywheel and being matched with a corresponding locking device, and can form three kinds of experimental devices through replacing and installing different parts such as a center wheel, a planet carrier, a cam and the like on a big rotating plate. According to an experimental method provided by the utility model, the experimental device regards the big rotating plate as a reference system, enables components to form a state of relative moving or relative static through configuring different parts such as the center wheel, the planet carrier, the cam and the like, rotating the components in the reference system and reversely rotating the reference system, and can realize three reversal process experiments such as reversal process calculation for the transmission ratio of an epicyclic gear train, a reversal process design for a cam profile and reversal process for tempering of a connecting rod mechanism. According to the utility model, the experimental device for realizing the reversal process in the theory of mechanism is initiated, and drawing and abstract analyzing are realized by the experimental device and the experimental method.
Description
Technical field
The utility model relates to a kind of experimental provision and experimental technique of Machine Design, relate to more specifically a kind of experimental provision and experimental technique of theory of mechanisms, can realize epicyclic gearing than experimental provision and the experimental technique of " reversal process " calculating, cam profile " reversal process " design and linkage assembly tempering " reversal process " design 3 kinds " reversal processes ".
Background technology
In a kind of " theory of mechanisms ", for realizing device and the experimental technique of " reversal process " experiment, belong to teaching experimental equipment and experimental technique.In institution of higher education's " theory of mechanisms " (mechanical principle, Fundamentals of Machine Design etc.) course, relate to " reversal process " in have that epicyclic gearing calculates than " reversal process ", the content such as cam profile " reversal process " design and linkage assembly tempering " reversal process " design, " reversal process " is to adopt relative motion principle, be reference system when getting different objects in mechanism, the relative motion relation between member remains unchanged.In existing teaching, all explain by drawing and abstract analysis, lack experimental provision intuitively.Therefore be necessary to design one and can realize epicyclic gearing than experimental provision and the experimental technique of " reversal process " calculating, cam profile " reversal process " design and linkage assembly tempering " reversal process " design 3 kinds " reversal processes ".
Utility model content
The purpose of this utility model is experimental provision and the experimental technique that has proposed a kind of theory of mechanisms, can realize epicyclic gearing than experimental provision and the experimental technique of " reversal process " calculating, cam profile " reversal process " design and linkage assembly tempering " reversal process " design 3 kinds " reversal processes ".
Adopt for achieving the above object following technical scheme:
An experimental provision for theory of mechanisms, comprises station rack, foot pad, bearing, main drive shaft, crank, crossbeam, traffic cycle drive sprocket, driven shaft drive sprocket, driven shaft, driven shaft fixed bar, driven shaft fixed pin, traffic cycle, axle head screw, index dial, axle journal, flat key, traffic cycle driving chain, driven shaft driving chain, traffic cycle fixed pin, forward transmission flywheel, reversion transmission flywheel, is characterized in that:
Station rack, foot pad, crossbeam three are connected to form a door-shaped frame structure, and main drive shaft and driven shaft are arranged on top, framework both sides by bearing,
Forward transmission flywheel is installed on main drive shaft, and forward transmission flywheel adopts bicycle freewheel, and its inside is an overrunning clutch being made up of handle ratchet wheel mechanism,
Reversion transmission flywheel is also installed on main drive shaft, and reversion transmission flywheel is identical with forward transmission flywheel structure, but is oppositely arranged on main drive shaft,
Main drive shaft rear end fixed installation crank,
Main drive shaft front end is provided with center pit, for traffic cycle fixed pin is inserted wherein, wherein can fix traffic cycle when traffic cycle fixed pin inserts, and prevents that traffic cycle from rotating,
On driven shaft, be installed with driven shaft drive sprocket,
Traffic cycle drive sprocket and traffic cycle are fixed together, and overall empty set is on driven shaft, and traffic cycle is marked with scale, for reflecting the rotational angle of traffic cycle,
Driven shaft rear end is installed with driven shaft fixed bar, and there is perforate driven shaft fixed bar end, correspondingly with driven shaft fixed bar position of opening on crossbeam goes out also to have perforate, driven shaft fixed pin inserts corresponding aperture on crossbeam through the perforate of driven shaft fixed bar, for fixing driven shaft, prevent that driven shaft from rotating
In the anterior keyway of driven shaft, lay flat key, driven shaft front end has screwed hole of centre, is threaded connection index dial is fixed on driven shaft with axle head screw, and index dial is used for reflecting the rotational angle of driven shaft,
Reversion transmission flywheel is connected with driven shaft drive sprocket by driven shaft driving chain, when crank clockwise rotates main drive shaft, drives 8 driven shaft drive sprockets and driven shaft to clockwise rotate by driven shaft driving chain;
Forward transmission flywheel is connected with traffic cycle drive sprocket by traffic cycle driving chain, when crank rotates counterclockwise main drive shaft, drives traffic cycle drive sprocket and traffic cycle to rotate counterclockwise by traffic cycle driving chain,
Axle journal is for installing not with the part of driven shaft rotation, and as centre wheel, flat key is for connect the part that rotates together with driven shaft, as planet carrier, cam etc.
It is configuration like this than the experimental provision of " reversal process " calculating that the utility model is realized epicyclic gearing:
On traffic cycle, with annular wheel gib screw, annular wheel is fixed thereon, on driven shaft, be fixed with planet carrier by flat key, on the axle of planet carrier, planet wheel is installed, planet carrier turns clockwise with driven shaft, the axle journal position of driven shaft is set with centre wheel, and centre wheel rotation direction and velocity of rotation are not subject to the impact of driven shaft.
The experimental provision that the utility model is realized cam profile " reversal process " design is configuration like this:
On traffic cycle, with guide rail gib screw, driven member guide rail is fixed thereon, cam follower is through driven member guide rail, cam follower end is installed roller, be used for reducing friction, on roller center hole, there is a pencil fixed muffle, pencil can be inserted in sleeve, for drawing cam profile, on driven shaft, be fixed with cam by flat key, cam turns clockwise with driven shaft.
The experimental provision that the utility model is realized linkage assembly tempering " reversal process " design is configuration like this:
On traffic cycle, be fixed with four-bar mechanism frame with frame gib screw through guide groove, another section of empty set of four-bar mechanism frame is at the axle journal position at driven shaft, four-bar mechanism frame couples together by hinge and rocking bar, rocking bar couples together by hinge and connecting rod, connecting rod couples together by hinge and crank, crank is connected on driven shaft by flat key
Another kind of configuration is:
On driven shaft by the flat key crank that is connected, crank couples together by hinge and connecting rod, connecting rod couples together by hinge and rocking bar, rocking bar couples together by hinge and four-bar mechanism frame, on the guide groove of connecting rod and rocking bar, be fixed with configuration tempering connecting link with configuration tempering attachment screw, make four-bar mechanism tempering, keep the configuration of whole four connecting rods constant.
A kind of experimental technique of theory of mechanisms:
The utility model is realized epicyclic gearing:
1. with annular wheel gib screw, annular wheel is fixed thereon on traffic cycle, on driven shaft, be fixed with planet carrier by flat key, on the axle of planet carrier, planet wheel is installed, planet carrier turns clockwise with driven shaft, the axle journal position of driven shaft is set with centre wheel, and centre wheel rotation direction and velocity of rotation are not subject to the impact of driven shaft.
2. insert in the center pit of main drive shaft with traffic cycle fixed pin, traffic cycle is fixed;
3. extract driven shaft fixed pin from crossbeam,
4. clockwise rotate crank one week, the computing formula according to epicyclic gearing ratio:
so
z
3for the annular wheel number of teeth, Z
1centered by tooth number, N
1centered by wheel speed, N
hfor planet carrier rotating speed, as annular wheel number of teeth Z
3=60, centre wheel tooth number Z
1=20, in the time that planet carrier clockwise rotates 1 week, centre wheel will clockwise rotate 4 weeks, can find out by 14 index dials direction and all numbers that centre wheel rotates; Record driven shaft rotational angle
5. traffic cycle fixed pin is extracted in the center pit of main drive shaft, driven shaft fixed pin is come in and gone out in crossbeam,
6. rotate counterclockwise crank one week, the computing formula according to fixed shaft gear train ratio of gear:
so
z
3for the annular wheel number of teeth, Z
1centered by tooth number, Z
2for the planet wheel number of teeth, N
1centered by wheel speed, N
hfor planet carrier rotating speed, N
3for annular wheel rotating speed, as annular wheel number of teeth Z
3=60, centre wheel tooth number Z
1=20, star gear tooth number Z
2=20, in the time that annular wheel rotates counterclockwise 1 week with rotating disk, centre wheel will clockwise rotate 3 weeks, can find out by 14 index dials direction and all numbers that centre wheel rotates; Record driven shaft rotational angle, can find out, the relative velocity of annular wheel and centre wheel is all 4 weeks.
The experimental technique that the utility model is realized cam profile " reversal process " design is:
1. on traffic cycle, with guide rail gib screw, driven member guide rail is fixed thereon, cam follower is through driven member guide rail, cam follower end is installed roller, be used for reducing friction, on roller center hole, there is a pencil fixed muffle, pencil can be inserted in sleeve, for drawing cam profile, on driven shaft, be fixed with cam by flat key, cam turns clockwise with driven shaft.
2. insert in the center pit of main drive shaft with traffic cycle fixed pin, traffic cycle is fixed;
3. extract driven shaft fixed pin from crossbeam,
4. clockwise rotate crank one week, can observe cam dextrorotation circles, driven member moves up and down once, and at the actuating travel section of cam, driven member moves upward, in the far section of stopping of cam, driven member is slack at peak, and at the reverse-running section of cam, driven member moves downward, in the closely section of stopping of cam, driven member is slack in minimum point;
5. traffic cycle fixed pin is extracted in the center pit of main drive shaft,
6. driven shaft fixed pin is come in and gone out in crossbeam,
7. on cam, cover a cardboard,
8. rotate counterclockwise crank one week, cam follower, driven member guide rail, pencil fixed muffle all will rotate counterclockwise with traffic cycle, cam follower simultaneously, and pencil fixed muffle also moves along driven member guide rail, pencil will be drawn next closed curve on cardboard, it is shaped as the equal space line of cam profile, and distance is the radius of roller, and this curve is the pitch curve of cam.
The experimental technique that the utility model is realized linkage assembly tempering " reversal process " design is such:
1. on traffic cycle, be fixed with four-bar mechanism frame with frame gib screw through guide groove, another section of empty set of four-bar mechanism frame is at the axle journal position at driven shaft, four-bar mechanism frame couples together by hinge and rocking bar, rocking bar couples together by hinge and connecting rod, connecting rod couples together by hinge and crank, and crank is connected on driven shaft by flat key;
2. insert in the center pit of main drive shaft with traffic cycle fixed pin, traffic cycle is fixed, extract driven shaft fixed pin from crossbeam;
3. on traffic cycle, cover a cardboard, on cardboard, draw the initial orientation angle of lower crank and rocking bar;
4. clockwise rotate angle of crank, then the position angle of drawing lower crank and rocking bar on cardboard;
5. on driven shaft by the flat key crank that is connected, crank couples together by hinge and connecting rod, connecting rod couples together by hinge and rocking bar, rocking bar couples together by hinge and four-bar mechanism frame, on the guide groove of connecting rod and rocking bar, be fixed with configuration tempering connecting link with configuration tempering attachment screw, make four-bar mechanism tempering, keep the configuration of whole four connecting rods constant.
5. take off frame gib screw from traffic cycle,
6. stir counterclockwise by the four-bar mechanism of " tempering ", make crank get back to initial position, the position of rocking bar under drawing on cardboard;
7. pull down configuration tempering attachment screw, four-bar mechanism frame is pulled back to initial position, four-bar mechanism frame is fixed on traffic cycle with frame gib screw;
8. again clockwise rotate new angle of crank, repeat 4. to step 7., until draw the position of 3 rocking bars; Take off cardboard, cross the individual location point at the hinge center, two ends of rocking bar and draw respectively two circles, the center of circle of these two circles is respectively the center of revolute pair between crank center of rotation and crank and connecting rod, the distance of center circle of two circles is crank length, the center of circle of two circles is respectively four-bar mechanism frame length and length of connecting rod with the distance at hinge center, rocking bar two ends respectively, like this, realize known two side link corresponding angles, asked the problem of length of connecting rod and a side link length.
The utlity model has following advantage and beneficial effect:
Device of the present utility model utilizes the unidirectional drive characteristic of flywheel, coordinates corresponding locking device, realized different parts on same axle clockwise and rotate counterclockwise; By changing different parts are installed, can form three kinds of experimental provisions on traffic cycle; Method of the present utility model, using traffic cycle as reference system, by member and reverse rotation reference system in rotation reference system, makes member form relative motion with relative static, can realize three kinds of " reversion is sent out " experiments.The apparatus structure of utility model is ingenious, the careful uniqueness of method of utility model.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is teaching aid transmission principle figure of the present utility model.
Fig. 2 is teaching aid main structure chart of the present utility model.
Fig. 3 is the fundamental diagram of the utility model while calculating than " reversal process " for testing epicyclic gearing.
The principle of work sketch that Fig. 4 is the utility model when testing cam profile " reversal process " design.
Principle of work sketch before the tempering that Fig. 5 a is the utility model when testing linkage assembly tempering " reversal process " design.
Principle of work sketch after the tempering that Fig. 5 b is the utility model when testing linkage assembly tempering " reversal process " design
In figure: 1-station rack, 2-foot pad, 3-bearing, 4-main drive shaft, 5-crank, 6-crossbeam, 7-traffic cycle drive sprocket, 8-driven shaft drive sprocket, 9-driven shaft, 10-driven shaft fixed bar, 11-driven shaft fixed pin, 12-traffic cycle, 13-axle head screw, 14-index dial, 15-axle journal, 16-flat key, 17a-traffic cycle driving chain, 17b-driven shaft driving chain, 18-traffic cycle fixed pin, 19-forward transmission flywheel, 20-reversion transmission flywheel, 21-annular wheel gib screw, 22-annular wheel, 23-planet wheel, 24-planet carrier, 25-centre wheel, 26-cam follower, 27-driven member guide rail, 28-guide rail gib screw, 29-roller, 30-pencil fixed muffle, 31-cam, 32-crank, 33-connecting rod, 34-hinge, 35-rocking bar, 36-guide groove, 37-four-bar mechanism frame, 38-frame gib screw, 39-configuration tempering connecting link, 40-configuration tempering attachment screw.
Embodiment
An experimental provision for theory of mechanisms, comprises station rack 1, foot pad 2, bearing 3, main drive shaft 4, crank 5, crossbeam 6, traffic cycle drive sprocket 7, driven shaft drive sprocket 8, driven shaft 9, driven shaft fixed bar 10, driven shaft fixed pin 11, traffic cycle 12, axle head screw 13, index dial 14, axle journal 15, flat key 16, traffic cycle driving chain 17a, driven shaft driving chain 17b, traffic cycle fixed pin 18, forward transmission flywheel 19, reversion transmission flywheel 20, is characterized in that:
Station rack 1, foot pad 2, crossbeam 6 threes are connected to form a door-shaped frame structure, and main drive shaft 4 and driven shaft 9 are arranged on top, framework both sides by bearing 3,
Forward transmission flywheel 19 is installed on main drive shaft 4, and forward transmission flywheel 19 adopts bicycle freewheel, and its inside is an overrunning clutch being made up of handle ratchet wheel mechanism,
Reversion transmission flywheel 20 is also installed on main drive shaft 4, and reversion transmission flywheel 20 is identical with forward transmission flywheel 19 structures, but is oppositely arranged on main drive shaft 4,
Main drive shaft 4 rear end fixed installation cranks 5,
Main drive shaft 4 front ends are provided with center pit, for traffic cycle fixed pin 18 is inserted wherein, wherein can fix traffic cycle 12 when traffic cycle fixed pin 18 inserts, and prevent that traffic cycle 12 from rotating,
On driven shaft 9, be installed with driven shaft drive sprocket 8,
Traffic cycle drive sprocket 7 is fixed together with traffic cycle 12, and overall empty set is on driven shaft 9, and traffic cycle 12 is marked with scale, for reflecting the rotational angle of traffic cycle 7,
Driven shaft 9 rear ends are installed with driven shaft fixed bar 10, there is perforate driven shaft fixed bar 10 ends, correspondingly with driven shaft fixed bar 10 position of opening on crossbeam 6 go out also to have perforate, driven shaft fixed pin 11 inserts corresponding aperture on crossbeam 6 through 10 perforates of driven shaft fixed bar, for fixing driven shaft 9, prevent that driven shaft 9 from rotating
In the anterior keyway of driven shaft 9, lay flat key 16, driven shaft 9 front ends have screwed hole of centre, be threaded connection index dial 14 is fixed on driven shaft 9 with axle head screw 13, and index dial 14 is for reflecting the rotational angle of driven shaft 9,
Reversion transmission flywheel 20 is connected with driven shaft drive sprocket 8 by driven shaft driving chain 17b, when crank 5 clockwise rotates main drive shaft 4, drives driven shaft drive sprocket 8 and driven shaft 9 to clockwise rotate by driven shaft driving chain 17b;
Forward transmission flywheel 19 is connected with traffic cycle drive sprocket 7 by traffic cycle driving chain 17a, when crank 5 rotates counterclockwise main drive shaft 4, rotates counterclockwise by traffic cycle driving chain 17a drive traffic cycle drive sprocket 7 and traffic cycle 12,
Axle journal 15 is for the part that do not rotate with driven shaft 9 is installed, and as centre wheel 25, flat key 16 is parts for connecting rotation together with driven shaft 9, as planet carrier 24, cam 31 etc.
It is configuration like this than the experimental provision of " reversal process " calculating that the utility model is realized epicyclic gearing:
On traffic cycle 12, with annular wheel gib screw 21, annular wheel 22 is fixed thereon, on driven shaft 9, be fixed with planet carrier 24 by flat key 16, planet wheel 23 is installed on the axle of planet carrier 24, planet carrier 24 turns clockwise with driven shaft 9, axle journal 15 positions of driven shaft 9 are set with centre wheel 25, and centre wheel 25 rotation directions and velocity of rotation are not subject to the impact of driven shaft.
The experimental provision that the utility model is realized cam profile " reversal process " design is configuration like this:
On traffic cycle 12, with guide rail gib screw 28, driven member guide rail 27 is fixed thereon, cam 26 driven members are through driven member guide rail 27, cam follower 26 ends are installed roller 29, be used for reducing friction, on roller 29 center pits, there is a pencil fixed muffle 30, pencil can be inserted in sleeve, for drawing cam profile, on driven shaft 9, be fixed with cam 31 by flat key 16, cam 31 turns clockwise with driven shaft 9.
The experimental provision that the utility model is realized linkage assembly tempering " reversal process " design is configuration like this:
On traffic cycle 12, be fixed with four-bar mechanism frame 37 with frame gib screw 38 through guide groove 36, another section of empty set of four-bar mechanism frame 37 is at axle journal 15 positions at driven shaft 9, four-bar mechanism frame 37 couples together by hinge 34 and rocking bar 35, rocking bar 35 couples together by hinge 34 and connecting rod 33, connecting rod 33 couples together by hinge 34 and crank 32, crank 32 is connected on driven shaft 9 by flat key 16
Another kind of configuration is:
On driven shaft 9 by flat key 16 crank 32 that is connected, crank 32 couples together by hinge 34 and connecting rod 33, connecting rod 33 couples together by hinge 34 and rocking bar 35, rocking bar 35 couples together by hinge 34 and four-bar mechanism frame 37, on the guide groove 36 of connecting rod 33 and rocking bar 35, be fixed with configuration tempering connecting link 39 with 40 configuration tempering attachment screws, make four-bar mechanism tempering, keep the configuration of whole four connecting rods constant.
A kind of experimental technique of theory of mechanisms:
The utility model is realized epicyclic gearing:
1. with annular wheel gib screw 21, annular wheel 22 is fixed thereon on traffic cycle 12, on driven shaft 9, be fixed with planet carrier 24 by flat key 16, planet wheel 23 is installed on the axle of planet carrier 24, planet carrier 24 turns clockwise with driven shaft 9, axle journal 15 positions of driven shaft 9 are set with centre wheel 25, and centre wheel 25 rotation directions and velocity of rotation are not subject to the impact of driven shaft.
2. insert in the center pit of main drive shaft 4 with traffic cycle fixed pin 18, traffic cycle 12 is fixed;
3. extract driven shaft fixed pin 11 from crossbeam 6,
4. clockwise rotate crank 5 one weeks, the computing formula according to epicyclic gearing ratio:
so
z
3for the annular wheel number of teeth, Z
1centered by tooth number, N
1centered by wheel speed, N
hfor planet carrier rotating speed, as annular wheel number of teeth Z
3=60, centre wheel tooth number Z
1=20, in the time that planet carrier clockwise rotates 1 week, centre wheel will clockwise rotate 4 weeks, can find out by index dial 14 direction and all numbers that centre wheel rotates; Record driven shaft rotational angle
5. traffic cycle 18 fixed pins are extracted in the center pit of main drive shaft 4, driven shaft fixed pin 11 are come in and gone out in crossbeam 6,
6. rotate counterclockwise crank 5 one weeks, the computing formula according to fixed shaft gear train ratio of gear:
so
z
3for the annular wheel number of teeth, Z
1centered by tooth number, Z
2for the planet wheel number of teeth, N
1centered by wheel speed, N
hfor planet carrier rotating speed, N
3for annular wheel rotating speed, as annular wheel number of teeth Z
3=60, centre wheel tooth number Z
1=20, star gear tooth number Z
2=20, in the time that annular wheel rotates counterclockwise 1 week with rotating disk, centre wheel will clockwise rotate 3 weeks, can find out by 14 index dials direction and all numbers that centre wheel rotates; Record driven shaft rotational angle, can find out, the relative velocity of annular wheel and centre wheel is all 4 weeks.
The experimental technique that the utility model is realized cam profile " reversal process " design is:
1. on traffic cycle 12, with guide rail gib screw 28, driven member guide rail 27 is fixed thereon, cam follower 26 is through driven member guide rail 27, cam follower 26 ends are installed roller 29, be used for reducing friction, on roller 29 center pits, there is a pencil fixed muffle 30, pencil can be inserted in sleeve, for drawing cam profile, on driven shaft 9, be fixed with cam 31 by flat key 16, cam 31 turns clockwise with driven shaft 9.
2. with inserting with traffic cycle fixed pin 18 in the center pit of main drive shaft 4, traffic cycle 12 is fixed;
3. extract driven shaft fixed pin 11 from crossbeam 6,
4. clockwise rotate crank 5 one weeks, can observe cam dextrorotation circles, driven member moves up and down once, and at the actuating travel section of cam, driven member moves upward, in the far section of stopping of cam, driven member is slack at peak, and at the reverse-running section of cam, driven member moves downward, in the closely section of stopping of cam, driven member is slack in minimum point;
5. traffic cycle fixed pin 18 is extracted in the center pit of main drive shaft 4,
6. driven shaft fixed pin 11 is come in and gone out in crossbeam 6,
7. on cam, cover a cardboard,
8. rotate counterclockwise crank 5 one weeks, cam follower 26, driven member guide rail 27, pencil fixed muffle 30 all will rotate counterclockwise with traffic cycle 12, cam follower 26 simultaneously, and pencil fixed muffle 30 also moves along driven member guide rail 27, pencil will be drawn next closed curve on cardboard, it is shaped as the equal space line of cam profile, and distance is the radius of roller, and this curve is the pitch curve of cam.
The experimental technique that the utility model is realized linkage assembly tempering " reversal process " design is such:
1. on traffic cycle 12, be fixed with four-bar mechanism frame 37 with frame gib screw 38 through guide groove 36, another section of empty set of four-bar mechanism frame 37 is at axle journal 15 positions at driven shaft 9, four-bar mechanism frame 37 couples together by hinge 34 and rocking bar 35, rocking bar 35 couples together by hinge 34 and connecting rod 33, connecting rod 33 couples together by hinge 34 and crank 32, and crank 32 is connected on driven shaft 9 by flat key 16;
2. insert in the center pit of main drive shaft 4 with traffic cycle fixed pin 18, traffic cycle 12 is fixed, extract driven shaft fixed pin 11 from crossbeam 6;
3. on traffic cycle 12, cover a cardboard, the initial orientation angle of drawing lower crank and rocking bar on cardboard;
4. clockwise rotate 5 one angles of crank, then the position angle of drawing lower crank and rocking bar on cardboard;
5. on driven shaft 9 by flat key 16 crank 32 that is connected, crank 32 couples together by hinge 34 and connecting rod 33, connecting rod 33 couples together by hinge 34 and rocking bar 35, rocking bar 35 couples together by hinge 34 and four-bar mechanism frame 37, on the guide groove 36 of connecting rod 33 and rocking bar 35, be fixed with configuration tempering connecting link 39 with configuration tempering attachment screw 40, make four-bar mechanism tempering, keep the configuration of whole four connecting rods constant.
5. take off frame gib screw 38 from traffic cycle 12,
6. stir counterclockwise by the four-bar mechanism of " tempering ", make crank 32 get back to initial position, the position of rocking bar 35 under drawing on cardboard;
7. pull down configuration tempering attachment screw 40, four-bar mechanism frame 37 is pulled back to initial position, four-bar mechanism frame 37 is fixed on traffic cycle 12 with frame gib screw 38;
8. again clockwise rotate 5 one new angles of crank, repeat 4. to step 7., until draw the position of 3 rocking bars 35; Take off cardboard, cross 3 location points at two ends hinge 34 centers of rocking bar 35 and draw respectively two circles, the center of circle of these two circles is respectively the center of revolute pair between crank center of rotation and crank and connecting rod, the distance of center circle of two circles is crank 32 length, the center of circle of two circles is respectively four-bar mechanism frame 37 length and connecting rod 33 length with the distance at rocking bar 35 hinge centers, two ends respectively, like this, realize known two side link corresponding angles, asked the problem of length of connecting rod and a side link length.
Claims (5)
1. the experimental provision of a theory of mechanisms, comprise station rack (1), foot pad (2), bearing (3), main drive shaft (4), crank (5), crossbeam (6), traffic cycle drive sprocket (7), driven shaft drive sprocket (8), driven shaft (9), driven shaft fixed bar (10), driven shaft fixed pin (11), traffic cycle (12), axle head screw (13), index dial (14), axle journal (15), flat key (16), traffic cycle driving chain (17a), driven shaft driving chain (17b), traffic cycle fixed pin (18), forward transmission flywheel (19), reversion transmission flywheel (20), it is characterized in that:
Station rack (1), foot pad (2), crossbeam (6) three are connected to form a door-shaped frame structure, and main drive shaft (4) and driven shaft (9) are arranged on top, framework both sides by bearing (3),
Forward transmission flywheel (19) is installed on main drive shaft (4), and forward transmission flywheel (19) adopts bicycle freewheel, and its inside is an overrunning clutch being made up of handle ratchet wheel mechanism,
Reversion transmission flywheel (20) is also installed on main drive shaft (4), and reversion transmission flywheel (20) is identical with forward transmission flywheel (19) structure, but it is upper to be oppositely arranged on main drive shaft (4),
Main drive shaft (4) rear end fixed installation crank (5),
Main drive shaft (4) front end is provided with center pit, for traffic cycle fixed pin (18) is inserted wherein, wherein can fix traffic cycle (12) when traffic cycle fixed pin (18) inserts, and prevents that traffic cycle (12) from rotating,
On driven shaft (9), be installed with driven shaft drive sprocket (8),
Traffic cycle drive sprocket (7) is fixed together with traffic cycle (12), and overall empty set is upper at driven shaft (9), and traffic cycle (12) is marked with scale, for reflecting the rotational angle of traffic cycle (7),
Driven shaft (9) rear end is installed with driven shaft fixed bar (10), there is perforate driven shaft fixed bar (10) end, upper go out also the have perforate corresponding to driven shaft fixed bar (10) position of opening of crossbeam (6), driven shaft fixed pin (11) inserts the upper corresponding aperture of crossbeam (6) through driven shaft fixed bar (10) perforate, for fixing driven shaft (9), prevent that driven shaft (9) from rotating
In the anterior keyway of driven shaft (9), lay flat key (16), driven shaft (9) front end has screwed hole of centre, be threaded connection index dial (14) is fixed on to driven shaft (9) above with axle head screw (13), index dial (14) is for reflecting the rotational angle of driven shaft (9)
Reversion transmission flywheel (20) is connected with driven shaft drive sprocket (8) by driven shaft driving chain (17b), when crank (5) clockwise rotates main drive shaft (4), drive driven shaft drive sprocket (8) and driven shaft (9) to clockwise rotate by driven shaft driving chain (17b);
Forward transmission flywheel (19) is connected with traffic cycle drive sprocket (7) by traffic cycle driving chain (17a), when contrary (5) hour hands of crank rotate main drive shaft (4), drive traffic cycle drive sprocket (7) and traffic cycle (12) to rotate counterclockwise by traffic cycle driving chain (17a)
Axle journal (15) is for installing the not part with driven shaft (9) rotation, and as centre wheel (25), the part that flat key (16) rotates together with driven shaft (9) for connection, as planet carrier (24), cam (31).
2. the experimental provision of a kind of theory of mechanisms as claimed in claim 1, is characterized in that:
Described traffic cycle (12) is above fixed thereon annular wheel (22) with annular wheel gib screw (21), driven shaft (9) is upper is fixed with planet carrier (24) by flat key (16), planet wheel (23) is installed on the axle of planet carrier (24), planet carrier (24) turns clockwise with driven shaft (9), axle journal (15) position of driven shaft (9) is set with centre wheel (25), and centre wheel (25) rotation direction and velocity of rotation are not subject to the impact of driven shaft.
3. the experimental provision of a kind of theory of mechanisms as claimed in claim 1, is characterized in that:
Described traffic cycle (12) is above fixed thereon driven member guide rail (27) with guide rail gib screw (28), cam follower (26) is through driven member guide rail (27), cam follower (26) end is installed roller (29), be used for reducing friction, on roller (29) center pit, there is a pencil fixed muffle (30), pencil can be inserted in sleeve, be used for drawing cam profile, driven shaft (9) is upper is fixed with cam (31) by flat key (16), and cam (31) turns clockwise with driven shaft (9).
4. the experimental provision of a kind of theory of mechanisms as claimed in claim 1, is characterized in that:
Described traffic cycle (12) is above fixed with four-bar mechanism frame (37) with frame gib screw (38) through guide groove (36), another section of empty set of four-bar mechanism frame (37) is at the axle journal in driven shaft (9) (15) position, four-bar mechanism frame (37) couples together by hinge (34) and rocking bar (35), rocking bar (35) couples together by hinge (34) and connecting rod (33), connecting rod (33) couples together by hinge (34) and crank (32), and crank (32) is connected on driven shaft (9) by flat key (16).
5. the experimental provision of a kind of theory of mechanisms as claimed in claim 1, is characterized in that:
Described driven shaft (9) is upper by flat key (16) crank (32) that is connected, crank (32) couples together by hinge (34) and connecting rod (33), connecting rod (33) couples together by hinge (34) and rocking bar (35), rocking bar (35) couples together by hinge (34) and four-bar mechanism frame (37), guide groove (36) at connecting rod (33) and rocking bar (35) is above fixed with configuration tempering connecting link (39) with configuration tempering attachment screw (40), make four-bar mechanism tempering, keep the configuration of whole four connecting rods constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105860.7U CN203759971U (en) | 2014-03-10 | 2014-03-10 | Experimental device for theory of mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420105860.7U CN203759971U (en) | 2014-03-10 | 2014-03-10 | Experimental device for theory of mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759971U true CN203759971U (en) | 2014-08-06 |
Family
ID=51255218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420105860.7U Expired - Fee Related CN203759971U (en) | 2014-03-10 | 2014-03-10 | Experimental device for theory of mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203759971U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824503A (en) * | 2014-03-10 | 2014-05-28 | 武昌工学院 | Experimental device and method for mechanisms |
| CN104200708A (en) * | 2014-09-04 | 2014-12-10 | 南昌大学 | Inversion method simulation and pressure angle analysis software platform |
| CN104240582A (en) * | 2014-09-26 | 2014-12-24 | 哈尔滨工程大学 | Transmission mechanism demonstrator |
| CN104346990A (en) * | 2014-11-23 | 2015-02-11 | 王齐贤 | New gear teaching aids |
| CN106940962A (en) * | 2017-04-21 | 2017-07-11 | 中国地质大学（武汉） | A kind of multi-functional mechanical principle teaching aid |
-
2014
- 2014-03-10 CN CN201420105860.7U patent/CN203759971U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824503A (en) * | 2014-03-10 | 2014-05-28 | 武昌工学院 | Experimental device and method for mechanisms |
| CN103824503B (en) * | 2014-03-10 | 2017-12-12 | 武昌工学院 | The experimental provision and experimental method of a kind of theory of mechanisms |
| CN104200708A (en) * | 2014-09-04 | 2014-12-10 | 南昌大学 | Inversion method simulation and pressure angle analysis software platform |
| CN104240582A (en) * | 2014-09-26 | 2014-12-24 | 哈尔滨工程大学 | Transmission mechanism demonstrator |
| CN104240582B (en) * | 2014-09-26 | 2016-09-14 | 哈尔滨工程大学 | Drive mechanism demonstrator |
| CN104346990A (en) * | 2014-11-23 | 2015-02-11 | 王齐贤 | New gear teaching aids |
| CN104346990B (en) * | 2014-11-23 | 2018-02-13 | 李华良 | Wheel Train Teaching Aids |
| CN106940962A (en) * | 2017-04-21 | 2017-07-11 | 中国地质大学（武汉） | A kind of multi-functional mechanical principle teaching aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103824503A (en) | Experimental device and method for mechanisms | |
| CN203759971U (en) | Experimental device for theory of mechanism | |
| CN203280999U (en) | Table tennis serving machine | |
| CN103745645A (en) | Multifunctional mechanical principle teaching demonstration instrument | |
| CN201829122U (en) | Crank connecting-rod and cam device | |
| CN203596138U (en) | Apparatus for comprehensive demonstration of mechanical drive | |
| CN104616580A (en) | Cam mechanism contour design and driven part motion characteristic mapping platform | |
| CN103985307B (en) | A kind of camming movement demonstrator | |
| CN112138359A (en) | Automatic tennis ball recycling and launching device | |
| CN111145618A (en) | A Mechanics Teaching Aid That Combines Various Movement Mechanisms | |
| CN110570746B (en) | Comprehensive teaching and training device for mechanical transmission mechanism | |
| CN205428354U (en) | Multi -functional plane link mechanism teaching mode | |
| CN211857885U (en) | A Mechanics Teaching Aid That Combines Various Movement Mechanisms | |
| CN2366133Y (en) | Mechanical numeral skipping-rope | |
| CN203825940U (en) | Cam contour curve rapid formation demonstration device | |
| CN203931330U (en) | Typical case's gear train overview display teaching aid | |
| CN203070594U (en) | Scroll type teaching aid for English auxiliary teaching | |
| CN210239618U (en) | Chain pressurization type drill bit | |
| CN105216955A (en) | A kind of pedal-type bicycle | |
| CN209188012U (en) | Flywheel resistance adjustment structure and exercycle | |
| CN203982680U (en) | A kind of teaching aid | |
| CN210574637U (en) | Mechanical rhythm demonstration ball jacking device | |
| CN203651156U (en) | Rotary screen printing driving device | |
| CN203931342U (en) | Training platform is analyzed in the integration test of mechanical system overlap joint | |
| CN207145565U (en) | A kind of transmission device for converting rotational motion to reciprocal change speed linear motion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140806 Termination date: 20150310 |
|
| EXPY | Termination of patent right or utility model |