CN109345918A - Mathematical probabilities apparatus for demonstrating - Google Patents
Mathematical probabilities apparatus for demonstrating Download PDFInfo
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- CN109345918A CN109345918A CN201811367790.1A CN201811367790A CN109345918A CN 109345918 A CN109345918 A CN 109345918A CN 201811367790 A CN201811367790 A CN 201811367790A CN 109345918 A CN109345918 A CN 109345918A
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- hole
- fixedly mounted
- groove
- cabinet
- top surface
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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
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
Abstract
Mathematical probabilities apparatus for demonstrating, including pedestal, the top of pedestal side top surface is equipped with cabinet, cabinet is transparent material, buffer bar is fixedly mounted in the front and rear sides of tank floor, the lower end of buffer bar is fixedly mounted on the top surface of pedestal, one piece of transverse slat is fixedly mounted in the lower end of box house two sides, box house side opens up two first through hole, the either flush of one of first through hole and transverse slat, the box body of top surface opening is fixedly mounted in the side of cabinet, and the inside two sides of box body open up the second through-hole, communicate inside one of first through hole and one of them second through-hole.Structure of the invention design is rationally, easy to use, during use, without manually placing dice, the puzzlement that need to artificially pick up dice is also avoided, the operating time can be saved, the efficiency attended class is improved, bumper and absorbing shock can be played the role of to the present invention, keep the present invention more stable during the work time.
Description
Technical field
The invention belongs to mathematical teaching apparatus field, specifically a kind of mathematical probabilities apparatus for demonstrating.
Background technique
Probability & Statistics are one of basic contents of mathematical education, are the important components of Modern Mathematics, but often
Probability & Statistics are in study, and since excessively abstractness causes student that cannot be well understood by for it, especially impart knowledge to students teacher now
When saying probability event, teacher can only be explained in such a way that blackboard writing is given lessons to students, and classmate is not that can understand
Thoroughly, therefore some complementary teaching aids for probability and mathematical statistics are lacked in teaching process causes student to learn
Inefficiency.
Summary of the invention
The present invention provides a kind of mathematical probabilities apparatus for demonstrating, to solve defect in the prior art.
The present invention is achieved by the following technical programs:
The top of mathematical probabilities apparatus for demonstrating, including pedestal, pedestal side top surface is equipped with cabinet, and cabinet is transparent material, cabinet
Buffer bar is fixedly mounted in the front and rear sides of bottom surface, and the lower end of buffer bar is fixedly mounted on the top surface of pedestal, box house two sides
Lower end one piece of transverse slat is fixedly mounted, box house side opens up two first through hole, one of first through hole and transverse slat
The box body of top surface opening is fixedly mounted in either flush, the side of cabinet, and the inside two sides of box body open up the second through-hole, wherein one
It is communicated inside a first through hole and one of them second through-hole, is equipped with dice in box body, dice can pass through the second through-hole and the
One through-hole, dice can be moved along the top surface of transverse slat, and the top of cabinet side is fixedly mounted arc panel, arc panel and another first
Through-hole is corresponding, and the top surface of arc panel opens up sliding slot, and vertical sleeve is fixedly mounted in the bottom surface of arc panel side, and dice can be along set
Cylinder is mobile, and the lower end of sleeve is closed end, and the bottom surface of arc panel side opens up through groove, and dice can pass through through groove, through groove and sliding slot
Inside communicates, and through groove is corresponding with sleeve and communicates with sleeve inner, is fixedly connected between box body and sleeve by connecting tube, dice
Son can be moved along connecting tube, be communicated inside sleeve and connecting tube, the upper end of connecting tube it is corresponding with another second through-hole and with
It being communicated inside another second through-hole, sleeve inner two sides open up vertical slot, it is equipped with one piece of pushing block between two vertical slots, pushing block
Two sides are located in corresponding vertical slot and can move along vertical slot, and the bottom surface of pushing block and sleeve inner underrun two first are vertically
Spring is fixedly connected, and the first Vertical Spring gives pushing block one thrust always, and sleeve inner bottom surface opens up threading hole, threading hole and set
Cylinder is internal to be communicated, and the top of pedestal other side top surface is equipped with disk, and the front surface of disk opens up the first penetrating circular hole, the first circle
A rotating bar is passed through in hole, rotating bar is fixedly connected with the inner wall of the first circular hole by bearing, and the lower section of disk is equipped with arc
Frame, arc frame pass through with pedestal between bracket be fixedly connected, the front surface of arc frame side opens up strip groove, the front of strip groove
Equipped with rectangular block, rectangular block is fixedly connected with the inner wall of strip groove by thrust spring, and thrust spring gives rectangular block one always
Thrust, rectangular block are inserted into strip groove, and cotton rope is fixedly mounted in the side of disk, and the upper end of cotton rope passes through threading hole, line
The upper end of rope is fixedly connected with the bottom surface of pushing block, and the both ends of rotating bar are respectively positioned on the outside of the first circular hole, and the front end of rotating bar is solid
Dingan County fills poke rod, and two blocks are fixedly mounted in the front surface of disk, and poke rod can be in contact with block, poke rod and rectangle
Block can be in contact, and the rear end of rotating bar is equipped with vertical bar, and the lower end of vertical bar is fixedly mounted on the top surface of pedestal, the upper end of vertical bar with
The rear end of rotating bar is fixedly connected by bearing, and vertical support plate is fixedly mounted in the rear of box body top surface, support plate side
Motor is fixedly mounted in upper end, and the front of motor is equipped with plectane, and plectane is fixedly connected with the output shaft of motor, plectane it is upper
Sliding block is fixedly mounted in end, and the front of plectane is equipped with riser, and the front surface of riser opens up bar shaped through groove, and sliding block is located in bar shaped through groove
And can be moved along bar shaped through groove, fixed link is fixedly mounted in the lower end of support plate side, and front end and the riser lower end of fixed link pass through
Bearing is fixedly connected, and riser lower end is fixedly mounted swinging plate, and swinging plate is located at that box body is interior and can move in box body, cabinet it is another
Side opens up round through groove, and the other side of box house is equipped with movable plate, and the bottom surface of movable plate is in contact simultaneously with the top surface of transverse slat
It can be moved along transverse slat, movable plate is corresponding with one of first through hole, and U-shaped frame is fixedly mounted in the other side outside cabinet, U-shaped
The side of frame opens up the second penetrating circular hole, and the second circular hole is corresponding with round through groove, passes through in round through groove and the second circular hole
Push plate is fixedly mounted in one end of a piece push rod, push rod, and the side of push plate is fixedly connected with U-shaped frame by crossed strip, lateral bullet
Spring gives push plate one thrust always, and the other end of push rod is fixedly connected with the side of movable plate, and push rod can be along round through groove and
Two circular holes are mobile, and the upper wall inside one of first through hole connects supporting plate by torsional spring, and supporting plate can wherein one first
Left-right rotation in through-hole.
Mathematical probabilities apparatus for demonstrating as described above, the periphery of the buffer bar are equipped with the second Vertical Spring, and second is perpendicular
The bottom surface of upper end and cabinet to spring is fixedly connected, and the lower end of the second Vertical Spring is fixedly connected with the top surface of pedestal.
The baffle of arc is fixedly mounted in mathematical probabilities apparatus for demonstrating as described above, the top surface of the arc panel side,
Baffle is corresponding with through groove.
Handle is fixedly mounted in the top surface of mathematical probabilities apparatus for demonstrating as described above, the cabinet.
Several movable pulleys are fixedly mounted in the bottom surface of mathematical probabilities apparatus for demonstrating as described above, the pedestal.
Scuff-resistant coating is fixedly mounted in the inner wall of mathematical probabilities apparatus for demonstrating as described above, the sliding slot.
The invention has the advantages that structure of the invention design is rationally, and it is easy to use, during use, without manually putting
Dice is set, the puzzlement that need to artificially pick up dice is also avoided, the operating time can be saved, improve the efficiency attended class, it can be to this hair
It is bright to play the role of bumper and absorbing shock, keep the present invention more stable during the work time.When utilizing the present invention, the present invention is placed
On lectern, electric motor operation, the output shaft of motor drives plectane rotation, and plectane band movable slider rotates, and sliding block rotates same
When and slided in bar shaped through groove, sliding block drives riser to swing by bar shaped through groove, and riser drives swinging plate to swing, and swinging plate exists
Dice is pushed into connecting tube in box body by one of them second through-hole while swing, since connecting tube is skewed
State, dice is moved to the top surface in sleeve and being located at pushing block in connecting tube, while pressing rectangular block, and rectangular block is made to be moved to item
In shape slot, rectangular block no longer stops poke rod, pushes pushing block to move up along vertical slot under the action of the first Vertical Spring, pushing block
It pushes dice to move up while moving up, until dice is released in sleeve, is located at dice in through groove, dice is along sliding
Slot is moved in another first through hole, and dice is rolled in cabinet by first through hole, and dice can be fallen on transverse slat, works as dice
When remaining static on transverse slat, write down number, push push plate, push plate push push rod along the second circular hole and round through groove to the left
Mobile, push rod pushes dice to be moved to the left by movable plate, pushes supporting plate open when dice is moved in first through hole, dice can
It is entered in box body by first through hole and the second through-hole, rotates rotating bar, rotating bar drives poke rod to be rotated, poke rod
It is in contact after turning an angle with block and block is driven to rotate, block drives disk to be rotated, while disk rotational
Cotton rope is tightened, cotton rope moves down in threading hole, drives pushing block to move down in vertical slot while cotton rope moves down, pushes away
After block is moved to certain position, rectangular block is pressed, is moved to rectangular block in strip groove, poke rod is turned under rectangular block
Side, while rectangular block is unclamped, rectangular block is released in strip groove in acting on for thrust spring, can be blocked by rectangular block
Poke rod is rotated, and circuits sequentially work by above step, it will be able to repeatedly throw dice, it is general to thus allow for mathematics
Rate demonstration places dice without artificial, the puzzlement that need to artificially pick up dice is also avoided, when the present invention exists during use
When generating vibration in the course of work, bumper and absorbing shock can be played the role of to the present invention by buffer bar, make the present invention in work
It is more stable during making.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is schematic structural view of the invention；Fig. 2 is the enlarged drawing of the A direction view of Fig. 1；Fig. 3 is putting for the B direction view of Fig. 1
Big figure；Fig. 4 is the partial enlarged view of the I of Fig. 1;Fig. 5 is the partial enlarged view of the II of Fig. 1.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Mathematical probabilities apparatus for demonstrating, as shown, including pedestal 1, the top of 1 side top surface of pedestal is equipped with cabinet 2, cabinet
2 be transparent material, and buffer bar 3 is fixedly mounted in the front and rear sides of 2 bottom surface of cabinet, and the lower end of buffer bar 3 is fixedly mounted on pedestal 1
Top surface, one piece of transverse slat 4 is fixedly mounted in the lower ends of 2 inside two sides of cabinet, and 2 interior side of cabinet opens up two first through hole 5,
In a first through hole 5 and transverse slat 4 either flush, the side of cabinet 2 is fixedly mounted the box body 6 of top surface opening, box body 6 it is interior
Portion two sides open up the second through-hole 7, communicate inside one of first through hole 5 and one of them second through-hole 7, set in box body 6
There is dice 8, dice 8 can pass through the second through-hole 7 and first through hole 5, and dice 8 can be moved along the top surface of transverse slat 4,2 side of cabinet
Top be fixedly mounted arc panel 9, arc panel 9 is corresponding with another first through hole 5, and the top surface of arc panel 9 opens up sliding slot 10,
Vertical sleeve 11 is fixedly mounted in the bottom surface of 9 side of arc panel, and dice 8 can be moved along sleeve 11, and the lower end of sleeve 11 is closing
End, the bottom surface of 9 side of arc panel open up through groove 12, and dice 8 can pass through through groove 12, communicate inside through groove 12 and sliding slot 10, through groove
12 it is corresponding with sleeve 11 and with communicated inside sleeve 11, be fixedly connected between box body 6 and sleeve 11 by connecting tube 13, dice
8 can move along connecting tube 13, communicate inside sleeve 11 and connecting tube 13, the upper end of connecting tube 13 and another 7 phase of the second through-hole
It is corresponding and with communicated inside another second through-hole 7,11 inside two sides of sleeve open up vertical slot 14, are equipped between two vertical slots 14
One piece of pushing block 15, the two sides of pushing block 15 are located in corresponding vertical slot 14 and can move along vertical slot 14, the bottom surface of pushing block 15 and set
11 inner bottom surfaces of cylinder are fixedly connected by two first Vertical Springs 16, and the first Vertical Spring 16 is pushed away to pushing block 15 1 always
Power, 11 inner bottom surface of sleeve open up threading hole 17, communicate inside threading hole 17 and sleeve 11, the top of 1 other side top surface of pedestal
Equipped with disk 18, the front surface of disk 18 opens up the first penetrating circular hole 19, passes through a rotating bar 20 in the first circular hole 19, turns
Lever 20 is fixedly connected with the inner wall of the first circular hole 19 by bearing, and the lower section of disk 18 is equipped with arc frame 21, arc frame 21 with
Pedestal 1 pass through between bracket 22 be fixedly connected, the front surface of 21 side of arc frame opens up strip groove 23, and the front of strip groove 23 is set
There is rectangular block 24, rectangular block 24 is fixedly connected with the inner wall of strip groove 23 by thrust spring 25, and thrust spring 25 gives square always
One thrust of shape block, rectangular block 24 are inserted into strip groove 23, and cotton rope 26 is fixedly mounted in the side of disk 35, cotton rope 26
Upper end passes through threading hole 17, and the upper end of cotton rope 26 is fixedly connected with the bottom surface of pushing block 15, and the both ends of rotating bar 20 are respectively positioned on first
Poke rod 27 is fixedly mounted in the outside of circular hole 19, the front end of rotating bar 20, and two blocks 28 are fixedly mounted in the front surface of disk 18,
Poke rod 27 can be in contact with block 28, and poke rod 27 can be in contact with rectangular block 24, and the rear end of rotating bar 20 is equipped with perpendicular
Bar 29, the lower end of vertical bar 29 are fixedly mounted on the top surface of pedestal 1, and the upper end of vertical bar 29 and the rear end of rotating bar 20 are solid by bearing
Vertical support plate 30 is fixedly mounted in fixed connection, the rear of 6 top surface of box body, and motor is fixedly mounted in the upper end of 30 side of support plate
31, the front of motor 31 is equipped with plectane 32, and plectane 32 is fixedly connected with the output shaft of motor 31, and the upper end of plectane 32 is fixed
Sliding block 33 is installed, the front of plectane 32 is equipped with riser 34, and the front surface of riser 34 opens up bar shaped through groove 35, and sliding block 33 is located at bar shaped
It can move in through groove 35 and along bar shaped through groove 35, the lower end fixed installation fixed link 36 of 30 side of support plate, before fixed link 36
End is fixedly connected with 34 lower end of riser by bearing, and swinging plate 37 is fixedly mounted in 34 lower end of riser, and swinging plate 37 is located in box body 6
And can be moved in box body 6, the other side of cabinet 2 opens up round through groove 38, and the other side inside cabinet 2 is equipped with movable plate 39,
The bottom surface of movable plate 39 is in contact with the top surface of transverse slat 4 and can move along transverse slat 4, movable plate 39 and one of first through hole 5
Corresponding, U-shaped frame 40 is fixedly mounted in the other side outside cabinet 2, and the side of U-shaped frame 40 opens up the second penetrating circular hole 41, the
Two circular holes 41 are corresponding with round through groove 38, pass through a push rod 42 in round through groove 38 and the second circular hole 41, and the one of push rod 42
Push plate 43 is fixedly mounted in end, and the side of push plate 43 is fixedly connected with U-shaped frame 40 by crossed strip 44, and crossed strip 44 is given always
43 1 thrusts of push plate, the other end of push rod 42 are fixedly connected with the side of movable plate 39, and push rod 42 can be along round 38 He of through groove
Second circular hole 41 is mobile, and the upper wall inside one of first through hole 5 connects supporting plate 45 by torsional spring, and supporting plate 45 can be wherein
Left-right rotation in one first through hole 5.Structure of the invention design is rationally, easy to use, during use, without manually putting
Dice 8 is set, the puzzlement that need to artificially pick up dice 8 is also avoided, the operating time can be saved, improve the efficiency attended class, it can be to this
Bumper and absorbing shock is played the role of in invention, keeps the present invention more stable during the work time.When utilizing the present invention, the present invention is put
It sets on lectern, motor 31 works, and the output shaft of motor 31 drives plectane 32 to rotate, and plectane 32 is rotated with movable slider 33,
It slides while sliding block 33 rotates and in bar shaped through groove 35, sliding block 33 drives riser 34 to swing by bar shaped through groove 35, riser
34 drive swinging plate 37 to swing, and dice 8 is passed through one of them second through-hole 7 by swinging plate 37 while swinging in box body 6
It is pushed into connecting tube 13, since connecting tube 13 is heeling condition, dice 8 is moved in sleeve 11 and is located in connecting tube 13
The top surface of pushing block 15, while rectangular block 24 is pressed, it is moved to rectangular block 24 in strip groove 23, rectangular block 24 no longer stops to stir
Bar 27 pushes pushing block 15 to move up along vertical slot 14, while pushing block 15 moves up under the action of the first Vertical Spring 16
It pushes dice 8 to move up, until dice 8 is released in sleeve 11, is located at dice 8 in through groove 12, dice 8 10 moves along the chute
It moves in another first through hole 5, dice 8 is rolled in cabinet 2 by first through hole 5, and dice 8 can be fallen on transverse slat 4, work as dice
Son 8 writes down number when remaining static on transverse slat 4, pushes push plate 43, and push plate 43 pushes push rod 42 along 41 He of the second circular hole
Round through groove 38 is moved to the left, and push rod 42 pushes dice 8 to be moved to the left by movable plate 39, and dice 8 is moved in first through hole 5
When supporting plate 45 is pushed open, dice 8 can be entered in box body 6 by first through hole 5 and the second through-hole 7, rotate rotating bar 20, turn
Lever 20 drives poke rod 27 to be rotated, and poke rod 27 is in contact with block 28 after turning an angle and drives 28 turns of block
Dynamic, block 28 drives disk 18 to be rotated, and cotton rope 26 is tightened while disk 18 rotates, and cotton rope 26 is downward in threading hole 17
It is mobile, drive pushing block 15 to move down in vertical slot 14 while cotton rope 26 moves down, after pushing block 15 is moved to certain position,
Rectangular block 24 is pressed, is moved to rectangular block 24 in strip groove 23, poke rod 27 is turned to the lower section of rectangular block 24, while pine
Rectangular block 24 is opened, rectangular block 24 is released in strip groove 23 in acting on for thrust spring 25, can be kept off by rectangular block 24
Firmly poke rod 27 is rotated, and circuits sequentially work by above step, it will be able to repeatedly be thrown dice 8, be thus allowed for
Mathematical probabilities demonstration places dice 8 without artificial, also avoids the puzzlement that need to artificially pick up dice 8 during use, when
When the present invention generates vibration during the work time, bumper and absorbing shock can be played the role of to the present invention by buffer bar 3, make this
Invention is more stable during the work time.
Specifically, the periphery of buffer bar 3 described in the present embodiment is equipped with the second Vertical Spring for bumper and absorbing shock, the
The upper end of two Vertical Springs is fixedly connected with the bottom surface of cabinet 2, the fixed company in the lower end of the second Vertical Spring and the top surface of pedestal 1
It connects.When utilizing the present invention, a buffering can be played to cabinet 2 by the second Vertical Spring, to play protection cabinet 2
Effect.
Specifically, in order to avoid influencing normal operating, the top surface of 19 side of arc panel described in the present embodiment is fixedly mounted
The baffle of arc, baffle are corresponding with through groove 12.When moving up in sleeve 11 using dice 8 of the present invention, pass through baffle 6
It avoids dice 8 from being pierced by through groove 12, avoids influencing normal use.
Further, for the ease of carrying the present apparatus, handle is fixedly mounted in the top surface of cabinet 2 described in the present embodiment.When
When using the present apparatus, by handle can the present apparatus easy to carry, keep the present apparatus more convenient to use.
Further, for the ease of movement, several movable pulleys are fixedly mounted in the bottom surface of pedestal 1 described in the present embodiment.
When utilizing the present invention, the present apparatus can easily be moved by movable pulley, keeps the present apparatus more convenient to use.
Further, in order to play the role of protection to dice 8, the fixed peace of the inner wall of sliding slot 10 described in the present embodiment
Fill scuff-resistant coating.When utilizing the present invention, when dice 8 slides in sliding slot 10, the inner wall of sliding slot 10 can be prevented by scuff-resistant coating
Dice 8 is caused to wear, so as to play the role of protection to dice 8.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (6)
1. mathematical probabilities apparatus for demonstrating, it is characterised in that: including pedestal (1), the top of pedestal (1) side top surface is equipped with cabinet
(2), cabinet (2) is transparent material, and the front and rear sides of cabinet (2) bottom surface are fixedly mounted buffer bar (3), under buffer bar (3)
End is fixedly mounted on the top surface of pedestal (1), and one piece of transverse slat (4) is fixedly mounted in the lower end of the internal two sides of cabinet (2), and cabinet (2) is interior
Portion side opens up two first through hole (5), the either flush of one of first through hole (5) and transverse slat (4), and the one of cabinet (2)
The box body (6) of top surface opening is fixedly mounted in side, and the inside two sides of box body (6) open up the second through-hole (7), one of them is first logical
It is communicated inside hole (5) and one of them second through-hole (7), is equipped with dice (8) in box body (6), it is logical that dice (8) can pass through second
Hole (7) and first through hole (5), dice (8) can be mobile along the top surface of transverse slat (4), and arc is fixedly mounted in the top of cabinet (2) side
Plate (9), arc panel (9) is corresponding with another first through hole (5), and the top surface of arc panel (9) opens up sliding slot (10), arc panel
(9) bottom surface of side is fixedly mounted vertical sleeve (11), and dice (8) can be mobile along sleeve (11), and the lower end of sleeve (11) is
The bottom surface of closed end, arc panel (9) side opens up through groove (12), and dice (8) can pass through through groove (12), through groove (12) and sliding slot
(10) internal to communicate, through groove (12) it is corresponding with sleeve (11) and with communicated inside sleeve (11), box body (6) and sleeve (11) it
Between be fixedly connected by connecting tube (13), dice (8) can be mobile along connecting tube (13), phase inside sleeve (11) and connecting tube (13)
Logical, the upper end of connecting tube (13) is corresponding with another the second through-hole (7) and communicates with another second through-hole (7) inside, covers
The internal two sides of cylinder (11) open up vertical slot (14), and one piece of pushing block (15), the two sides of pushing block (15) are equipped between two vertical slots (14)
And can be mobile along vertical slot (14) in corresponding vertical slot (14), bottom surface and sleeve (11) inner bottom surface of pushing block (15) pass through
Two first Vertical Springs (16) are fixedly connected, and the first Vertical Spring (16) gives (15) thrusts of pushing block, sleeve (11) always
Inner bottom surface opens up threading hole (17), communicates inside threading hole (17) and sleeve (11), sets above pedestal (1) other side top surface
Have disk (18), the front surface of disk (18) opens up penetrating the first circular hole (19), and a rotation is passed through in the first circular hole (19)
Bar (20), rotating bar (20) are fixedly connected with the inner wall of the first circular hole (19) by bearing, and the lower section of disk (18) is equipped with arc
Frame (21), arc frame (21) pass through with pedestal (1) between bracket (22) be fixedly connected, the front surface of arc frame (21) side opens up
The front of strip groove (23), strip groove (23) is equipped with rectangular block (24), and the inner wall of rectangular block (24) and strip groove (23), which passes through, to be pushed away
Power spring (25) is fixedly connected, and thrust spring (25) gives one thrust of rectangular block always, and rectangular block (24) is inserted into bar shaped
In slot (23), cotton rope (26) are fixedly mounted in the side of disk (35), and the upper end of cotton rope (26) passes through threading hole (17), cotton rope (26)
Upper end be fixedly connected with the bottom surface of pushing block (15), the both ends of rotating bar (20) are respectively positioned on the outside of the first circular hole (19), rotation
Poke rod (27) are fixedly mounted in the front end of bar (20), and two blocks (28), poke rod is fixedly mounted in the front surface of disk (18)
(27) it can be in contact with block (28), poke rod (27) can be in contact with rectangular block (24), and the rear end of rotating bar (20) is set
Have vertical bar (29), the lower end of vertical bar (29) is fixedly mounted on the top surface of pedestal (1), upper end and rotating bar (20) of vertical bar (29)
Rear end is fixedly connected by bearing, and the rear of box body (6) top surface is fixedly mounted vertical support plate (30), support plate (30) side
Upper end motor (31) are fixedly mounted, the front of motor (31) is equipped with plectane (32), plectane (32) and motor (31)
Output shaft is fixedly connected, and sliding block (33) are fixedly mounted in the upper end of plectane (32), and the front of plectane (32) is equipped with riser (34), riser
(34) front surface opens up bar shaped through groove (35), and sliding block (33) is located in bar shaped through groove (35) and can move along bar shaped through groove (35)
Dynamic, fixed link (36) are fixedly mounted in the lower end of support plate (30) side, and front end and riser (34) lower end of fixed link (36) pass through
Bearing is fixedly connected, and swinging plate (37) are fixedly mounted in riser (34) lower end, and swinging plate (37) is located in box body (6) and can be in box body
(6) it is moved in, the other side of cabinet (2) opens up round through groove (38), and the internal other side of cabinet (2) is equipped with movable plate (39),
The bottom surface of movable plate (39) is in contact with the top surface of transverse slat (4) and can be mobile along transverse slat (4), movable plate (39) and one of them the
One through-hole (5) is corresponding, and U-shaped frame (40) is fixedly mounted in the external other side of cabinet (2), and the side of U-shaped frame (40) opens up penetrating
The second circular hole (41), the second circular hole (41) is corresponding with round through groove (38), and round through groove (38) and the second circular hole (41) are interior
Across a push rod (42), push plate (43) are fixedly mounted in one end of push rod (42), and side and the U-shaped frame (40) of push plate (43) pass through
Crossed strip (44) is fixedly connected, and crossed strip (44) gives (43) thrusts of push plate, the other end of push rod (42) and shifting always
The side of movable plate (39) is fixedly connected, and push rod (42) can be mobile along round through groove (38) and the second circular hole (41), one of them the
For the internal upper wall of one through-hole (5) by torsional spring connection supporting plate (45), supporting plate (45) being capable of a left side in a first through hole (5) wherein
It turns right dynamic.
2. mathematical probabilities apparatus for demonstrating according to claim 1, it is characterised in that: the periphery of the buffer bar (3) is set
Have the second Vertical Spring, the upper end of the second Vertical Spring is fixedly connected with the bottom surface of cabinet (2), the lower end of the second Vertical Spring with
The top surface of pedestal (1) is fixedly connected.
3. mathematical probabilities apparatus for demonstrating according to claim 1, it is characterised in that: the top of described arc panel (19) side
The baffle of arc is fixedly mounted in face, and baffle is corresponding with through groove (12).
4. mathematical probabilities apparatus for demonstrating according to claim 1, it is characterised in that: the top surface of the cabinet (2) is fixed
Handle is installed.
5. mathematical probabilities apparatus for demonstrating according to claim 1, it is characterised in that: the bottom surface of the pedestal (1) is fixed
Several movable pulleys are installed.
6. mathematical probabilities apparatus for demonstrating according to claim 1, it is characterised in that: the inner wall of the sliding slot (10) is fixed
Scuff-resistant coating is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811367790.1A CN109345918A (en) | 2018-11-16 | 2018-11-16 | Mathematical probabilities apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107798965A (en) * | 2017-11-22 | 2018-03-13 | 黄跃 | Dice agitating device is used in a kind of mathematical probabilities teaching |
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Application publication date: 20190215 |