CN113539025B - Initial value sensitive type variable distance magnetic force pendulum experimental device - Google Patents
Initial value sensitive type variable distance magnetic force pendulum experimental device Download PDFInfo
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- CN113539025B CN113539025B CN202110867744.3A CN202110867744A CN113539025B CN 113539025 B CN113539025 B CN 113539025B CN 202110867744 A CN202110867744 A CN 202110867744A CN 113539025 B CN113539025 B CN 113539025B
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Abstract
The invention discloses an initial value sensitive type variable distance magnetic force pendulum experiment device, which relates to the field of dynamics magnetic force pendulum experiment demonstration devices and comprises a cantilever cross rod, a vertical upright rod, a hinged sleeve, a scale mark U-shaped pipe, a T-shaped support, a round cake magnet, an equilateral triangle guide groove and a magnet fixing circular plate. The cantilever cross rod and the vertical upright rod are fixedly connected and installed through the hinging sleeve; the scale mark U-shaped pipe is fixedly connected to the T-shaped support; the round cake magnets are placed in the three round cake magnet grooves indicated by the equilateral triangle guide grooves; and the magnet fixing circular plate is provided with round cake magnet grooves at different positions for placing the round cake magnets required by the experiment. The initial value sensitive type distance-variable magnetic pendulum experiment device can change the position of the magnet and observe the demonstration experiment of the pendulum ball movement, has the advantages of detachable components, horizontal calibration, comparison experiment, simple experiment operation and the like, and is convenient for observing the initial value sensitivity phenomenon of the pendulum ball movement.
Description
Technical Field
The invention relates to the field of dynamics magnetic force pendulum experiment demonstration devices, in particular to an initial value sensitive type distance-variable magnetic force pendulum experiment device.
Background
Magnetic pendulums represent an unpredictable interesting physical system. The pendulum ball pendulum is fixed by a suspension wire, and the magnets are placed on the base and act on the pendulum ball pendulum by attraction or repulsion. When the pendulum displacement is released from a certain initial position, it tends to swing back and forth in an unstable, unpredictable pattern, and the pendulum ball eventually comes to rest above one of the magnet fields due to damping factors.
When there are several co-existing attractors, the track for a given initial position is typically attracted to one of several attractors, within certain parameters. Therefore, there must be a corresponding attraction domain boundary, which is often fractal. The initial point can only have a certain accuracy both physically and numerically. The prediction of the initial sensitivity is not problematic if all tracks starting at a certain distance from the initial position converge to the same attractor. However, if some of the orbitals converge to one attractor and the rest converge to another attractor, the initial sensitivity cannot be reliably predicted, and the pendulum represents a kinetic system that can verify the initial sensitivity.
The magnet position of the existing magnetic pendulum experiment demonstration device cannot be moved, the study design condition is inconvenient to change, the evolution law of the influence of pendulum ball motion and the initial value sensitivity phenomenon is influenced, the existing magnetic pendulum device is not compact in structure, the components cannot be disassembled, and a horizontal calibration device is lacked.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an initial value sensitive type variable distance magnetic force pendulum experimental device, magnets can be arranged into an equilateral triangle, a magnet fixing plate can move in two directions, parts can be detached, the pendulum ball motion demonstration of the magnets at different coordinate positions can be carried out, the experimental operation is simple, and the initial value sensitivity phenomenon is convenient to study.
In order to achieve the above purpose, the technical solution for solving the technical problem is as follows:
the invention discloses an initial value sensitive type variable distance magnetic force pendulum experimental device, which comprises a cantilever cross rod, a vertical upright rod, a hinged sleeve, a scale mark U-shaped pipe, a T-shaped support, a round cake magnet, an equilateral triangle guide groove and a magnet fixing circular plate, wherein:
the cantilever cross rod and the vertical upright rod are fixedly connected together through the hinging sleeve; the scale mark U-shaped pipe is fixedly connected to the T-shaped support; the round cake magnets are placed in the three round cake magnet grooves indicated by the equilateral triangle guide grooves; and the magnet fixing circular plate is provided with round cake magnet grooves at different positions for placing the round cake magnets required by the experiment.
Further, still include vertical pole setting base, first fastening knob and second fastening knob, wherein:
the bottom of the vertical upright rod is arranged in the vertical upright rod base, the cantilever cross rod and the vertical upright rod are fixedly connected into a space which is staggered by 90 degrees, and the hinged sleeve is provided with the first fastening knob for adjusting and fastening the cantilever cross rod; and the second fastening knob is used for adjusting and fastening the vertical upright rod.
Further, still include pendulum ball plumb line and pendulum ball, wherein:
one end of the left side of the cantilever cross rod is connected with one end of the upper side of the pendulum ball suspension line, one end of the lower side of the pendulum ball suspension line is fixedly connected with the pendulum ball, and the cantilever cross rod can transversely move in the hinging sleeve and is used for adjusting the pendulum ball to be aligned with the initial position of the geometric center; the hinged sleeve can vertically move along the vertical upright rod and is used for adjusting the distance between the pendulum ball and the geometric center in the vertical direction.
Furthermore, the device also comprises a T-shaped base, the T-shaped support is fixedly connected to the T-shaped base, colored water is filled in the scale mark U-shaped pipe and used for determining whether liquid levels on two sides of the scale mark U-shaped pipe are located at the same scale mark or not and detecting whether the device is placed horizontally or not when the device is placed on the placing platform, horizontal placing and adjusting are carried out on the device, and demonstration experiment errors can be reduced.
Further, still include first stopcock and second stopcock, wherein:
the first pipe plug and the second pipe plug are arranged on the two sides of the scale mark U-shaped pipe and used for packaging colored water in the scale mark U-shaped pipe, the first pipe plug and the second pipe plug can be detached and used for replacing and packaging the colored water in the scale mark U-shaped pipe at regular intervals, and the scale mark U-shaped pipe is transparent, so that the position of a scale mark where the colored water is located can be observed conveniently.
Further, still include first cake magnet groove, second cake magnet groove and third cake magnet groove, wherein:
the cake magnet is placed according to the demonstration experiment demand the equilateral triangle guide way is directional in the three cake magnet groove that first cake magnet groove, second cake magnet groove and third cake magnet groove are constituteed, equilateral triangle is arranged to the cake magnet, and three cake magnet groove distributes and uses geometric center as the centre of a circle to any one cake magnet groove distance is on the external circumference of radial equilateral triangle is arrived at to geometric center.
Further, still include fixed plate thread slipping and direction spout, wherein:
be equipped with below the fixed plectane of magnet fixed plectane fixed plate sliding button and direction spout, the fixed plectane of magnet can be followed the direction spout removes, just the fixed plate sliding button is used for guaranteeing the two-way slip of the fixed plectane of magnet.
Further, still include circular chassis, tripod fixed bolster and tripod telescopic link, wherein:
the magnet fixing circular plate, the vertical upright rod base and the T-shaped base are fixedly connected to the upper surface of the circular chassis, the three-leg fixing support and the three-leg telescopic rod are arranged below the circular chassis, and the three-leg telescopic rod can move in a slide way inside the three-leg fixing support to adjust the position of the three-leg fixing support, so that the circular chassis can be placed horizontally.
Further, still include first adjusting nut, second adjusting nut and third adjusting nut, wherein:
the three-leg telescopic rod is provided with first adjusting nut, second adjusting nut and third adjusting nut at the end, and three adjusting nut can adjust according to demonstration experiment needs circular chassis level is placed on the laboratory bench, and adjusting nut can guarantee that the device level is placed, reduces the demonstration experiment error.
Further, still include first adjusting nut rubber sleeve, second adjusting nut rubber sleeve and third adjusting nut rubber sleeve, wherein:
the first adjusting nut is sleeved with the first adjusting nut rubber sleeve, the second adjusting nut is sleeved with the second adjusting nut rubber sleeve, the third adjusting nut is sleeved with the third adjusting nut rubber sleeve, the three adjusting nut rubber sleeves are used for protecting the three adjusting nuts, the three adjusting nuts are prevented from being worn due to long-time use, the three adjusting nut rubber sleeves can be replaced periodically, and the use precision of the device is guaranteed.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1. the initial value sensitive type distance-variable magnetic force pendulum experimental device can perform contrast experiment demonstration of the motion of the pendulum ball under different magnet placing positions;
2. the initial value sensitive type variable-distance magnetic pendulum experimental device has the advantages of compact structure, small occupied space, detachable components, capability of horizontal calibration, capability of comparative experiment, simplicity in experimental operation and the like, and is convenient for demonstrating the initial value sensitivity phenomenon.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of an initial value-sensitive variable-distance magnetic pendulum experimental apparatus according to the present invention;
FIG. 2 is an exploded view of an initial sensitive variable-distance magnetic pendulum experimental apparatus according to the present invention;
FIG. 3 is a schematic view of the cross bar and vertical bar connection structure of the present invention;
FIG. 4 is a schematic view of the pendulum ball connection of the present invention;
FIG. 5 is a schematic view of a connection structure of a scale line U-shaped pipe according to the present invention;
FIG. 6 is a top plan view of the arrangement of the disk magnet slots of the present invention;
FIG. 7 is a schematic view of the construction of the circular base plate of the present invention;
FIG. 8 is a left side plan view of the magnetic fixing circular plate connecting structure of the present invention;
FIG. 9 is a schematic bottom plan view of the circular base plate attachment of the present invention;
FIG. 10 is a schematic view of the connection structure of the tripod expansion link and the adjusting nut of the present invention.
[ description of main symbols ]
1. A cantilever beam; 2. a vertical upright rod; 3. hinging and fixing the sleeve; 4. a scale line U-shaped pipe; 5. a T-shaped support; 6. a cake magnet; 7. an equilateral triangle guide slot; 8. a magnet fixing circular plate; 9. a vertical upright base; 10. a first fastening knob; 11. a second fastening knob; 12. swinging balls and hanging wires; 13. placing a ball; 14. a T-shaped base; 15. a first plug; 16. a second plug; 17. a first pancake magnet slot; 18. a second pancake magnet slot; 19. a third round-cake magnet slot; 20. fixing plate slide fastener; 21. a guide chute; 22. a circular chassis; 23. a tripod fixing bracket; 24. a tripod telescoping rod; 25. a first adjusting nut; 26. a second adjusting nut; 27. a third adjusting nut; 28. a first adjusting nut rubber sleeve; 29. a second adjusting nut rubber sleeve; 30. and a third adjusting nut rubber sleeve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 10, the present embodiment discloses an initial value sensitive variable-distance magnetic pendulum experimental apparatus, which includes a cantilever cross bar 1, a vertical upright post 2, a hinged sleeve 3, a scale mark U-shaped tube 4, a T-shaped support 5, a round disc magnet 6, an equilateral triangle guide slot 7, and a magnet fixing circular plate 8, wherein the cantilever cross bar 1 and the vertical upright post 2 are fixedly connected together through the hinged sleeve 3; the scale mark U-shaped pipe 4 is fixedly connected to the T-shaped support 5; the round cake magnets 6 are placed in the three round cake magnet slots indicated by the equilateral triangle guide slot 7; and the magnet fixing circular plate 8 is provided with round cake magnet grooves at different positions for placing the round cake magnets 6 required by the experiment.
As shown in fig. 2 and fig. 3, the experimental device further includes a vertical upright base 9, a first fastening knob 10 and a second fastening knob 11, the bottom of the vertical upright 2 is disposed in the vertical upright base 9, the cantilever beam 1 and the vertical upright 2 are fixedly connected to form a space with 90 degrees staggered, and the first fastening knob 10 is disposed on the hinge sleeve 3 and used for adjusting and fastening the cantilever beam 1; the second fastening knob 11 is used for adjusting and fastening the vertical upright 2.
With reference to fig. 3 and 4, the experimental apparatus further includes a pendulum ball suspension wire 12 and a pendulum ball 13, one end of the left side of the cantilever beam 1 is connected to one end of the upper side of the pendulum ball suspension wire 12, one end of the lower side of the pendulum ball suspension wire 12 is fixedly connected to the pendulum ball 13, and the cantilever beam 1 can move transversely on the hinge sleeve 3 to adjust the pendulum ball 13 to align to the initial position of the geometric center; the hinge sleeve 3 can vertically move along the vertical upright rod 2 and is used for adjusting the distance between the pendulum ball 13 and the geometric center in the vertical direction.
With reference to fig. 1 and 5, the experimental device further comprises a T-shaped base 14, the T-shaped support 5 is fixedly connected to the T-shaped base 14, and colored water is filled in the scale mark U-shaped tube 4 and used for observing whether liquid levels on two sides of the scale mark U-shaped tube 4 are located on the same scale mark and detecting whether the device is placed horizontally when the device is determined to be placed on a placing platform, so that the horizontal placement adjustment of the device can be performed, and the demonstration experiment error can be reduced.
As shown in fig. 5, the experimental apparatus further includes a first pipe plug 15 and a second pipe plug 16, the first pipe plug 15 and the second pipe plug 16 are arranged on two sides of the U-shaped pipe 4 with the scale marks and used for packaging the colored water in the U-shaped pipe 4 with the scale marks, both the first pipe plug 15 and the second pipe plug 16 can be detached and used for periodically replacing the colored water packaged in the U-shaped pipe 4 with the scale marks, and the U-shaped pipe 4 with the scale marks is transparent, so that the position of the scale marks where the colored water is located can be conveniently observed.
As shown in fig. 6, experimental apparatus still includes first cake magnet groove 17, second cake magnet groove 18 and third cake magnet groove 19, cake magnet 6 is placed according to the demonstration experiment demand equilateral triangle guide way 7 is directional in the three cake magnet groove that first cake magnet groove 17, second cake magnet groove 18 and third cake magnet groove 19 are constituteed, cake magnet 6 constitutes equilateral triangle and arranges, and three cake magnet groove distributes and uses geometric center as the centre of a circle to geometric center is on arbitrary cake magnet groove distance is the external circumference of radial equilateral triangle.
Referring to fig. 7 and 8, the experimental apparatus further includes a fixed plate slider 20 and a guide chute 21, the fixed plate slider 20 and the guide chute 21 are disposed below the magnet fixed circular plate 8, the magnet fixed circular plate 8 moves along the guide chute 21, and the fixed plate slider 20 is configured to ensure bidirectional sliding of the magnet fixed circular plate 8.
As shown in fig. 9, the experimental apparatus further includes a circular chassis 22, a tripod fixing support 23 and a tripod telescopic rod 24, the upper surface of the circular chassis 22 is fixedly connected to the magnet fixing circular plate 8, the vertical upright base 9 and the T-shaped base 14, the lower surface of the circular chassis is provided with the tripod fixing support 23 and the tripod telescopic rod 24, and the tripod telescopic rod 24 moves in a slide way inside the tripod fixing support 23 to adjust the position, so as to ensure that the circular chassis 22 is placed horizontally.
As shown in fig. 10, the experimental device further includes a first adjusting nut 25, a second adjusting nut 26 and a third adjusting nut 27, the end of the tripod telescopic rod 24 is provided with the first adjusting nut 25, the second adjusting nut 26 and the third adjusting nut 27, the three adjusting nuts can adjust the circular chassis 22 to be horizontally placed on the experimental bench according to the requirements of the demonstration experiment, and the adjusting nuts can ensure that the device is horizontally placed, thereby reducing the errors of the demonstration experiment.
As shown in the combined drawings 2 and 10, the experimental device further comprises a first adjusting nut rubber sleeve 28, a second adjusting nut rubber sleeve 29 and a third adjusting nut rubber sleeve 30, the first adjusting nut 25 is sleeved with the first adjusting nut rubber sleeve 28, the second adjusting nut 26 is sleeved with the second adjusting nut rubber sleeve 29, the third adjusting nut 27 is sleeved with the third adjusting nut rubber sleeve 30, the three adjusting nut rubber sleeves are used for protecting the three adjusting nuts, the three adjusting nuts are prevented from being worn due to long-time use, the three adjusting nut rubber sleeves can be replaced periodically, and the use accuracy of the device is guaranteed.
Example 1
Referring to fig. 1 to 10, the initial value sensitive variable-distance magnetic pendulum experimental apparatus structure of the present invention considers two operation steps of the apparatus according to whether the apparatus is horizontally placed during the demonstration experiment as follows:
in the first case:
the method comprises the following steps: when the experiment begins, when an initial value sensitive type variable-distance magnetic force pendulum experimental device structure is placed on an experiment table, the device is in a horizontal placing state under the condition that the adjustment is not carried out, the scale marks of the scale mark U-shaped pipe 4 are used as the reference, and under the condition that the liquid levels of the left side and the right side of the scale mark U-shaped pipe 4 are parallel and level, the experiment can be started without adjusting the first adjusting nut 25, the second adjusting nut 26 and the third adjusting nut 27.
Step two: the telescopic length of the cantilever cross rod 1 is changed by adjusting the tightness degree of the first fastening knob 10 above the hinged sleeve 3, so that the pendulum ball 13 connected with the left end of the cantilever cross rod 1 through the pendulum ball suspension wire 12 is calibrated to be aligned with the geometric center set by the magnet fixing circular plate 8.
Step three: after calibration, an experiment is started, and according to the experimental requirements, three identical disk magnets 6 are added into an equilateral triangle formed by a first disk magnet groove 17, a second disk magnet groove 18 and a third disk magnet groove 19 on the magnet fixing circular plate 8 according to the indication of the equilateral triangle guide groove 7 marked on the magnet fixing circular plate 8.
Step four: after the preparation work is finished, the pendulum balls 13 are adjusted to be in proper positions, external force is applied to the pendulum balls 13 to enable the pendulum balls to move in an equilateral triangle magnetic field formed by the evenly distributed round cake magnets 6, whether the phenomenon that the pendulum balls 13 are randomly arranged among the magnets, namely the phenomenon of initial value sensitivity, occurs or not is observed, and if the phenomenon that the pendulum balls 13 are randomly arranged does not occur, the positions of the pendulum balls 13 need to be adjusted again until the phenomenon that the pendulum balls are randomly arranged occurs.
Step five: the magnet fixing circular plate 8 is stretched bidirectionally in the guide sliding groove 21 by adjusting the fixing plate slider 20, and at the same time, the position of the pendulum ball 13 is fixed. And observing the influence of changing the position of the round-cake magnet 6 on the initial value sensitivity phenomenon when the pendulum ball 13 moves.
Step six: and after the experiment is finished, finishing the device to finish the experiment demonstration.
In the second case:
step 1: when an experiment begins, when an initial value sensitive type variable-distance magnetic pendulum experimental device is placed on an experiment table, the device is in a non-horizontal placement state under the condition that the device is not adjusted and the scale marks of a scale mark U-shaped pipe 4 are used as a reference, under the condition that liquid levels on two sides of the scale mark U-shaped pipe 4 are not on the same horizontal line, in order to adjust the horizontal placement of the device, on one hand, the integral level of the device is adjusted by adjusting the tightness degree of a first adjusting nut 25, a second adjusting nut 26 and a third adjusting nut 27 to enable a three-leg telescopic rod 24 to change the telescopic length, and on the other hand, the device is controlled to be in the horizontal state by adjusting the tightness degree of the first adjusting nut 25, the second adjusting nut 26 and the third adjusting nut 27 to adjust the lifting of the device.
Step 2: the telescopic length of the cantilever cross rod 1 is changed by adjusting the tightness degree of the first fastening knob 10 above the hinge sleeve 3, so that the alignment of the pendulum ball 13 connected with the cantilever cross rod 1 through the pendulum ball suspension wire 12 and the geometric center set by the magnet fixing circular plate 8 is calibrated.
And step 3: after calibration, an experiment is started, and according to the experimental requirements, three identical disk magnets 6 are added into an equilateral triangle formed by a first disk magnet groove 17, a second disk magnet groove 18 and a third disk magnet groove 19 on the magnet fixing circular plate 8 according to the indication of the equilateral triangle guide groove 7 marked on the magnet fixing circular plate 8.
And 4, step 4: after the preparation work is finished, the pendulum ball 13 is adjusted to a proper position, external force is applied to the pendulum ball 13, the pendulum ball moves in an equilateral triangle magnetic field formed by the uniformly distributed round cake magnets 6, whether the phenomenon of random pendulum occurs or not is observed, and if the phenomenon of random pendulum does not occur, the position of the pendulum ball 13 needs to be adjusted again until the phenomenon of random pendulum occurs.
And 5: the magnet fixing disk 8 is stretched bidirectionally in the guide chute 21 by adjusting the fixing plate slider 20, and at the same time, the position of the pendulum ball 13 is fixed. And observing the influence of changing the position of the round-cake magnet 6 on the initial value sensitivity phenomenon when the pendulum ball 13 moves.
Step 6: after the experiment is finished, finishing the device and completing the experiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a sensitive type of initial value variable distance magnetic force pendulum experimental apparatus, its characterized in that, including cantilever horizontal pole (1), vertical pole setting (2), hinge solid sleeve (3), scale mark U type pipe (4), T word support (5), cake magnet (6), equilateral triangle guide way (7), fixed plectane of magnet (8), pendulum ball suspension wire (12), pendulum ball (13), T word base (14), fixed plate thread slipping (20) and direction spout (21), wherein:
the cantilever cross rod (1) and the vertical upright rod (2) are fixedly connected together through the hinge sleeve (3); the scale mark U-shaped pipe (4) is fixedly connected to the T-shaped support (5); the round cake magnets (6) are placed in the three round cake magnet slots indicated by the equilateral triangle guide slot (7); the magnet fixing circular plate (8) is provided with disc magnet grooves at different positions for placing the disc magnets (6) required by the experiment;
one end of the left side of the cantilever cross rod (1) is connected with one end of the upper side of the pendulum ball suspension wire (12), one end of the lower side of the pendulum ball suspension wire (12) is fixedly connected with the pendulum ball (13), and the cantilever cross rod (1) can transversely move on the hinging sleeve (3) and is used for adjusting the pendulum ball (13) to be aligned to the initial position of the geometric center; the hinging sleeve (3) can vertically move along the vertical upright rod (2) and is used for adjusting the distance between the pendulum ball (13) and the geometric center in the vertical direction;
the T-shaped support (5) is fixedly connected to the T-shaped base (14), colored water is filled in the U-shaped graduated tube (4) and used for observing whether liquid surfaces on two sides of the U-shaped graduated tube (4) are located at the same graduated line when the device is placed on a placing platform, detecting whether the device is placed horizontally, horizontally placing and adjusting the device, and reducing demonstration experiment errors;
be equipped with below the fixed plectane of magnet (8) fixed plectane of fixed plate (20) and direction spout (21), fixed plectane of magnet (8) are followed direction spout (21) remove, just fixed plate slipknot (20) are used for guaranteeing the bilateral slide of the fixed plectane of magnet (8).
2. The initial value sensitive type distance-variable magnetic force pendulum experimental device according to claim 1, further comprising a vertical upright base (9), a first fastening knob (10) and a second fastening knob (11), wherein:
the bottom of the vertical upright rod (2) is arranged in the vertical upright rod base (9), the cantilever cross rod (1) and the vertical upright rod (2) are fixedly connected into a space which is staggered by 90 degrees, and the hinged sleeve (3) is provided with the first fastening knob (10) for adjusting and fastening the cantilever cross rod (1); the second fastening knob (11) is used for adjusting and fastening the vertical upright (2).
3. The initial value sensitive type distance-variable magnetic pendulum experimental apparatus according to claim 1, further comprising a first pipe plug (15) and a second pipe plug (16), wherein:
be equipped with above scale mark U type pipe (4) both sides first stopcock (15) and second stopcock (16) for the encapsulation take the colour water in scale mark U type pipe (4), first stopcock (15) and second stopcock (16) all can be dismantled, are used for the regular change encapsulation take the colour water in scale mark U type pipe (4), just scale mark U type pipe (4) are transparent, are convenient for observe the scale mark position that takes the colour water to locate.
4. The initial value sensitive type distance-variable magnetic force pendulum experimental device according to claim 1, further comprising a first disk magnet slot (17), a second disk magnet slot (18) and a third disk magnet slot (19), wherein:
cake magnet (6) are placed according to the demonstration experiment demand place equilateral triangle guide way (7) are directional in the three cake magnet groove of first cake magnet groove (17), second cake magnet groove (18) and third cake magnet groove (19) constitution, equilateral triangle is arranged in cake magnet (6) constitution, and three cake magnet groove distributes and uses geometric center as the centre of a circle to geometric center is to arbitrary cake magnet groove distance on the external circumference of equilateral triangle as the radius.
5. The initial value sensitive type distance-variable magnetic pendulum experimental device according to claim 1, further comprising a circular chassis (22), a tripod fixing bracket (23) and a tripod telescopic rod (24), wherein:
fixed connection above circular chassis (22) fixed circular plate of magnet (8), vertical pole setting base (9) and T word base (14), be equipped with below tripod fixed bolster (23) and tripod telescopic link (24), tripod telescopic link (24) can remove the adjustment position in the slide of tripod fixed bolster (23) inside, be used for guaranteeing level is placed in circular chassis (22).
6. The initial value sensitive type distance-variable magnetic pendulum experimental apparatus according to claim 5, further comprising a first adjusting nut (25), a second adjusting nut (26) and a third adjusting nut (27), wherein:
the three-leg telescopic rod (24) end is provided with first adjusting nut (25), second adjusting nut (26) and third adjusting nut (27), and three adjusting nut can adjust according to demonstration experiment needs circular chassis (22) level is placed on the laboratory bench, and adjusting nut can guarantee that the device level is placed, reduces demonstration experiment error.
7. The initial value sensitive type distance-variable magnetic force pendulum experimental device according to claim 6, further comprising a first adjusting nut rubber sleeve (28), a second adjusting nut rubber sleeve (29) and a third adjusting nut rubber sleeve (30), wherein:
the first adjusting nut (25) is sleeved with the first adjusting nut rubber sleeve (28), the second adjusting nut (26) is sleeved with the second adjusting nut rubber sleeve (29), the third adjusting nut (27) is sleeved with the third adjusting nut rubber sleeve (30), and the three adjusting nut rubber sleeves are used for protecting the three adjusting nuts, so that the three adjusting nuts are prevented from being worn due to long-time use, and the three adjusting nut rubber sleeves can be replaced regularly, and the use precision of the device is ensured.
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| CN202110867744.3A CN113539025B (en) | 2021-07-29 | 2021-07-29 | Initial value sensitive type variable distance magnetic force pendulum experimental device |
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| CN202110867744.3A CN113539025B (en) | 2021-07-29 | 2021-07-29 | Initial value sensitive type variable distance magnetic force pendulum experimental device |
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| CN113539025A CN113539025A (en) | 2021-10-22 |
| CN113539025B true CN113539025B (en) | 2022-11-01 |
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| CN113539025A (en) | 2021-10-22 |
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