CN205609074U - Angular momentum conservation demonstration and quantitative determination experiment appearance - Google Patents
Angular momentum conservation demonstration and quantitative determination experiment appearance Download PDFInfo
- Publication number
- CN205609074U CN205609074U CN201521032868.6U CN201521032868U CN205609074U CN 205609074 U CN205609074 U CN 205609074U CN 201521032868 U CN201521032868 U CN 201521032868U CN 205609074 U CN205609074 U CN 205609074U
- Authority
- CN
- China
- Prior art keywords
- motor
- wheel disc
- circular small
- lower wheel
- angular momentum
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model relates to an angular momentum conservation demonstration and quantitative determination experiment appearance, top -down include rim plate, circular small motor, hollow rotary drum, lower rim plate, central pivot, support column and base in proper order, it is fixed to go up rim plate, circular small motor, hollow rotary drum and lower rim plate interconnect, center pivot, support column and base interconnect are fixed, center pivot and the hollow rotary drum swing joint that mutually supports, the peripheral cover of support column is equipped with interior ring of motor power supply and the outer ring of motor power supply, in the outer ring of motor power supply, the motor power supply slide through outer ring conductive brush and the contact of interior ring conductive brush respectively and electrically conduct in the ring top, and outer ring conductive brush and interior ring conductive brush fix under on the rim plate, and its terminal is hugged closely hollow rotary drum outer wall through the lead wire and is upwards inserted circular small motor. The beneficial effects of the utility model are that: including the conductive brush on the outer ring contact slip conduction current the ingenious design of inside and outside ring conductive brush structure is supplied power for the motor.
Description
Technical field
This utility model relates to experiment instrument, especially relates to a kind of angular momentum conservation demonstration and quantitative determination experiment instrument.
Background technology
At present, the angular momentum conservation demonstration instrument that all laboratorys or market are sold, three types nothing but: one, hand propelled, be i.e. with hands will hold handle leave behind time, pivot link and steel ball are maximum (state 1) away from rotating shaft distance, artificially allow pivot link and steel ball quick rotation, then, hold and push away on lever, pivot link is made to reduce (state 2) with steel ball away from rotating shaft distance, state 1 is big compared with state 2 rotation system rotary inertia, owing to rotation system bonding force square is zero, the conservation of angular momentum, so last current state (state 2) rotation system angular velocity increases, i.e. faster rotational speed；Its two, demonstration the conservation of angular momentum method be that a people is sitting in two hand-held upper dumbbells on chair, chair is allowed to rotate, demonstrating, by flexible two arms holding dumbbell hands, the speed that chair rotates, even two arm stretching, extensions rotate slack-off, and two arm retraction rotations add block；Three: one people stand in one can be freely rotatable rotating disk on, hands lift with can be freely rotatable runner, then, rotate upborne runner, free rotating disk will produce the rotation contrary with runner rotation direction.As above three kinds are demonstration test instrument, and are passive demonstration, there is presently no and both can demonstrate, and quantitative measurement can prove the experimental apparatus of the conservation of angular momentum again.This utility model is exactly that one both quantitative measurement can prove the experimental apparatus of the conservation of angular momentum again by demonstration.
Utility model content
The purpose of this utility model is to overcome prior art not enough, provides a kind of angular momentum conservation demonstration rational in infrastructure and quantitative determination experiment instrument.
For achieving the above object, this utility model have employed techniques below scheme:
Angular momentum conservation demonstration and quantitative determination experiment instrument, include wheel disc, circular small machine, hollow drum, lower wheel disc, central rotating shaft, support column and base the most successively；Described upper wheel disc, circular small machine, hollow drum and lower wheel disc are interconnected and fixed；Described central rotating shaft, support column and base are interconnected and fixed；Central rotating shaft and hollow drum cooperate flexible connection；Described support column periphery is arranged with motor and powers interior annulus and motor is powered outer toroid；Power outer toroid, motor of described motor is powered and is conducted electricity by outer toroid conduction brush and interior annulus conduction brush contact slide respectively above interior annulus, outer toroid conduction brush and interior annulus conduction brush are fixed on lower wheel disc, and its terminal is close to hollow drum outer wall by lead-in wire and is upwards accessed circular small machine.
As preferably: be also installed with the photogate of the lower wheel disc rotating speed of detection on described base.
As preferably: described outer toroid conduction brush or interior annulus conduction brush include that inner hollow column, overcoat open tubular column and brush, described inner hollow column and overcoat open tubular column cooperate and be provided with spring.
The beneficial effects of the utility model are:
1, also there is no " angular momentum conservation demonstration and quantitative determination experiment instrument " such experimental apparatus at present both at home and abroad；
2, have employed wheel disc to be socketed in circular small machine rotating shaft, circular small machine drives upper wheel disc to rotate；
3, hollow drum upper and lower side respectively in be fixed in upper and lower wheel shaft outer ring, circular small machine is fixed in hollow drum upper end, lower rotary table is fixed in hollow drum outer ring, hollow drum, upper and lower wheel shaft outer ring, lower wheel disc and circular small machine (containing upper wheel disc) affixed integral structure, upper and lower wheel shaft inner ring is fixed with central rotating shaft；According to angular momentum conservation law, being allowed to, circular small machine drives upper wheel disc to rotate in one direction, and hollow drum, lower wheel disc, upper and lower wheel shaft outer ring will rotate along rotating contrary direction with upper wheel disc with circular small machine (containing upper wheel disc) entirety.
4, on base, arrange inside and outside annulus to power, inside and outside annulus conduction brush rotates with lower wheel disc, conduction brush contact slide conduction electric current on inside and outside annulus is that motor is powered, and electric cabinet can be that circular small machine arranges rotating speed (display screen shows) and uses photogate to obtain lower wheel disc rotating speed (display screen shows)；
5, the ingehious design of inside and outside annulus conduction brush structure.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is base schematic diagram；
Fig. 3 is this utility model internal structure schematic diagram；
Fig. 4 is that rotating shaft is connected internal structure schematic diagram with hollow drum；
Fig. 5 is hollow drum upper whorl axial and rotating shaft rotating cylinder sectional view；
Fig. 6 is wheel shaft and rotating shaft rotating cylinder sectional view under hollow drum；
Fig. 7 is photogate and inside and outside annulus electric power-feeding structure schematic diagram；
Fig. 8 is outer toroid conduction brush or interior annulus conduction brush structural perspective.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described further.The explanation of following embodiment is only intended to help and understands this utility model.Should be understood that; for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to this utility model is carried out some improvement and modification, these improve and modification also falls in this utility model scope of the claims.
It is illustrated in figure 3 this utility model internal structure schematic diagram.1, base, 1-2, support column, 2, photogate, 3, lower wheel disc, 4, hollow drum, 5 central rotating shafts, 5-1, lower wheel shaft, 5-2, upper whorl axial, 6, circular small machine, 7, upper wheel disc (motor rotating disk), 8, electric cabinet, 9, motor powers outer toroid, 10, motor is powered interior annulus, 9-1, outer toroid conduction brush, 10-1, interior annulus conduction brush, 11, power supply receives joint current, 11-1, photogate and inside and outside power supply annulus bus, 11-2, motor supply lines.
It is illustrated in figure 4 rotating shaft and is connected overall structure schematic diagram with hollow drum.1-2, hollow drum support column, 9-1, outer toroid brush, 10-1, interior annulus brush, 3, lower wheel disc, 11-2, motor supply lines, 4, hollow drum, 5 rotating shafts, 5-1, lower wheel shaft, 5-2, upper whorl axial.
It is the upper and lower wheel shaft of hollow drum and rotating shaft rotating cylinder cross section as shown in Figure 5 to Figure 6.4, hollow drum, 5, central rotating shaft, 5-1, lower wheel shaft, 5-11, lower wheel shaft inner ring, 5-12, lower wheel shaft outer ring, 5-2, upper whorl axial, 5-21, upper whorl axial inner ring, 5-22, upper whorl axial outer ring.
It is illustrated in figure 7 photogate and inside and outside annulus electric power system.1, base, 2, photogate, 3, lower wheel disc, 9, motor powers outer toroid, 9-1, motor are powered outer toroid conduction brush, 9-10, motor are powered outer toroid supporting leg, 10, motor power interior annulus, 10-1, motor are powered interior annulus conduction brush, 10-10, motor are powered interior annulus supporting leg, 11, total transmission line, 11-0, photogate transmission line, 11-2, motor supply lines.
It is illustrated in figure 8 inside and outside annulus conduction brush.100, wire, 110 and the fixing end of lower wheel disc, 120, spring, 130, inner hollow column, 140, overcoat open tubular column, 150, brush.
The attachment structure of the present embodiment is: base arranges three leveling lower limbs for 1 time, base fixedly mounts the rotation system support column 1-2 such as photogate 2, hollow drum 4 and motor 6 and powers inside and outside annulus 10-1,9-1 supporting leg 10-10,9-10, as shown in Figure 3 and Figure 7；Support column 1-2 and central rotating shaft 5 and, lower wheel shaft 5-1, upper whorl axial 5-2 be integrated, as shown in Figure 2；Photogate transmission line 11-0 causes electric cabinet 8, as shown in Figure 7 by base card approach cable 11；Motor is powered, and outer toroid 9 is fixed on two supporting leg 9-10, motor interior annulus 10 of powering is fixed on two supporting leg 10-10, motor inside and outside annulus supporting leg of powering all uses non-conductive bakelite material to make, inside and outside annulus conductor wire is connected with inner and outer ring bottom from supporting leg of keeping right respectively, electric cabinet 8 is introduced, as shown in Figure 3 by lead-in wire 11-1 approach cable 11；Power outer toroid 9, motor of motor is powered and is conducted electricity by outer toroid conduction brush 9-1 and interior annulus conduction brush 10-1 contact slide respectively above interior annulus 10, brush 150 rotates with lower wheel disc 3, its terminal is close to hollow drum 4 outer wall by lead-in wire 11-2 and is upwards accessed circular small machine 6, as shown in figures 3 and 8；Hollow drum 4, upper and lower wheel shaft 5-2,5-1 outer ring, lower wheel disc 3 and circular small machine 6 are an entirety containing motor rotating disk (upper wheel disc) 6-1, as shown in Figure 3 and Figure 4；Inside and outside annulus conduction brush upper end 110 used is fixed with lower wheel disc 3, circular small machine 6 is accessed by lead-in wire 11-2 in wire 100 upper end, wire 100 enters overcoat open tubular column 140 by inner hollow column 130, wire 100 top is connected with brush 150, annulus conduction brush rotates with lower wheel disc 3, and brush 150 and motor inner and outer ring 10,9 of powering is in close contact and slides, and slides to guarantee to be in close contact, stiffness spring 120 is installed, as shown in Figure 8 at fixing end 110 with overcoat open tubular column 140 terminal room；Affixed lower wheel shaft 5-1 outer ring 5-12 in hollow drum 4 lower end, outer affixed lower wheel disc 3, interior affixed upper whorl axial 5-2 outer ring 5-22 on hollow drum 4, the affixed circular small machine 6 in hollow drum 4 upper end, on circular small machine 6 bearing 6-1, set connects wheel disc 7, as shown in Figure 3 and Figure 4；Hollow drum 4, upper and lower wheel shaft 5-2,5-1 outer ring 5-22,5-12, lower wheel disc 3 and circular small machine 6 are an overall structure containing upper wheel disc 7, stand on support column 1-2, it is socketed on outside the lower wheel shaft 5-1 and upper whorl axial 5-2 of central rotating shaft 5, upper and lower wheel shaft 5-2,5-1 inner ring 5-21,5-11 it is fixed in, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6 outside central rotating shaft 5；Photogate used can be transferred to electric cabinet 8 above for lower wheel disc unitary rotation information, and demonstrates rotating speed through display screen, can arrange circular small machine 6 rotating speed by electric cabinet 8 button, and this rotating speed also can be shown by electric cabinet 8 display screen 8-5.
The present embodiment operating procedure:
1, leveling base, gets out experimental apparatus；
2, connect electric cabinet power supply, rotating speed is set for circular small machine, open circular small machine and drive upper wheel disc to rotate；
3, subsequently it is seen that lower wheel disc, hollow drum, the meeting overall with circular small machine (containing upper wheel disc) of upper lower whorl outer ring are along the direction rotation contrary with upper wheel disc rotation direction；The bar that is in the light on lower wheel disc is in the light by photogate, and by rotation information transmission to control chamber, demonstrates the rotating speed that more than lower wheel disc is overall on fluorescent screen；
4, circular small machine rotating speed n is set1, then angular velocity omega1=2 π n1Coiling center rotating inertia I is taken turns on,1, circular small machine is around central axis inertia I2, hollow drum is around central axis inertia I3, upper and lower wheel shaft outer ring is around central axis inertia I4, lower whorl armor is around central axis inertia I5, then descending more than wheel disc is I=I entirely around central axis inertia1+I2+I3+I4+I5If it is n (can read from control chamber display screen) that photogate records the overall rotating speed of more than lower wheel disc, then angular velocity omega=2 π n calculates upper wheel disc angular momentum I respectively1ω1The overall angular momentum I ω with more than lower wheel disc；
5, it is zero due to rotation system bonding force square, according to result of calculation, if I1ω1≈ I ω, then be through this experiment instrument quantitative measurement, it was demonstrated that angular momentum conservation law is to set up.
Claims (3)
1. an angular momentum conservation demonstration and quantitative determination experiment instrument, it is characterised in that: include wheel disc, circular small machine, hollow drum, lower wheel disc, central rotating shaft, support column and base the most successively；Described upper wheel disc, circular small machine, hollow drum and lower wheel disc are interconnected and fixed；Described central rotating shaft, support column and base are interconnected and fixed；Central rotating shaft and hollow drum cooperate flexible connection；Described support column periphery is arranged with motor and powers interior annulus and motor is powered outer toroid；Power outer toroid, motor of described motor is powered and is conducted electricity by outer toroid conduction brush and interior annulus conduction brush contact slide respectively above interior annulus, outer toroid conduction brush and interior annulus conduction brush are fixed on lower wheel disc, and its terminal is close to hollow drum outer wall by lead-in wire and is upwards accessed circular small machine.
Angular momentum conservation demonstration the most according to claim 1 and quantitative determination experiment instrument, it is characterised in that: also it is installed with the photogate of the lower wheel disc rotating speed of detection on described base.
Angular momentum conservation demonstration the most according to claim 1 and quantitative determination experiment instrument, it is characterized in that: described outer toroid conduction brush or interior annulus conduction brush include that inner hollow column, overcoat open tubular column and brush, described inner hollow column and overcoat open tubular column cooperate and be provided with spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032868.6U CN205609074U (en) | 2015-12-11 | 2015-12-11 | Angular momentum conservation demonstration and quantitative determination experiment appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032868.6U CN205609074U (en) | 2015-12-11 | 2015-12-11 | Angular momentum conservation demonstration and quantitative determination experiment appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609074U true CN205609074U (en) | 2016-09-28 |
Family
ID=56959830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521032868.6U Withdrawn - After Issue CN205609074U (en) | 2015-12-11 | 2015-12-11 | Angular momentum conservation demonstration and quantitative determination experiment appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205609074U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405340A (en) * | 2015-12-11 | 2016-03-16 | 浙江大学城市学院 | Angular momentum conservation demonstration and quantitative determination experimental instrument |
| CN107014563A (en) * | 2017-04-28 | 2017-08-04 | 沈阳建筑大学 | Quick rotation inertia measuring instrument and its measuring method |
| CN107123344A (en) * | 2017-06-07 | 2017-09-01 | 浙江大学城市学院 | A kind of new angular momentum conservation demonstration and quantitative determination experiment instrument |
| CN110136549A (en) * | 2019-05-21 | 2019-08-16 | 辽宁工程技术大学 | A kind of qualitative demonstration and quantitatively measuring device |
-
2015
- 2015-12-11 CN CN201521032868.6U patent/CN205609074U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405340A (en) * | 2015-12-11 | 2016-03-16 | 浙江大学城市学院 | Angular momentum conservation demonstration and quantitative determination experimental instrument |
| CN107014563A (en) * | 2017-04-28 | 2017-08-04 | 沈阳建筑大学 | Quick rotation inertia measuring instrument and its measuring method |
| CN107123344A (en) * | 2017-06-07 | 2017-09-01 | 浙江大学城市学院 | A kind of new angular momentum conservation demonstration and quantitative determination experiment instrument |
| CN110136549A (en) * | 2019-05-21 | 2019-08-16 | 辽宁工程技术大学 | A kind of qualitative demonstration and quantitatively measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205609074U (en) | Angular momentum conservation demonstration and quantitative determination experiment appearance | |
| CN205391573U (en) | College sports education indoor body builder | |
| CN107295774A (en) | A kind of circuit board detaching structure | |
| CN209235523U (en) | A kind of textile sales rotary display shelf | |
| CN107826507B (en) | Handheld cable fault tester | |
| CN207268907U (en) | New angular momentum conservation demonstration and quantitative determination experiment instrument | |
| CN107123344A (en) | A kind of new angular momentum conservation demonstration and quantitative determination experiment instrument | |
| CN105405340B (en) | A kind of angular momentum conservation demonstration and quantitative determination experiment instrument | |
| CN210296955U (en) | Electric power rotating box | |
| CN208260084U (en) | A kind of Novel outdoor treadmill | |
| CN204061251U (en) | A kind of rotating disk can constant speed revolution bull ceiling fan | |
| CN205634424U (en) | Put a tub platform | |
| CN206163879U (en) | Children rotational rail car | |
| CN203469453U (en) | Top | |
| CN210110129U (en) | Novel angular momentum conservation demonstration and tester | |
| CN201035787Y (en) | Combined rotation experiment platform | |
| CN109126031A (en) | A kind of self-service astronaut exercising apparatus | |
| CN208319822U (en) | A kind of rotary-type amusement and recreation instrument | |
| CN207895737U (en) | A kind of physics experiments of high school sample display device | |
| CN101749205B (en) | Fitness machine | |
| CN207818055U (en) | A kind of rotational structure that can be controlled by mobile phone | |
| CN211410860U (en) | Dance exercise show rotary device | |
| CN206837476U (en) | Animated angel driving device for weddings | |
| CN205349804U (en) | Small -size electric fan of diversified rotation type | |
| CN204637512U (en) | Portable bicycle deceleration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160928 Effective date of abandoning: 20171212 |