CN211264719U - Coupling pendulum with variable pendulum length - Google Patents

Abstract

The utility model belongs to the technical field of teaching instrument, concretely relates to changeable coupling pendulum of pendulum length. The utility model aims to solve the technical problem that the coupling pendulum vibrates under different pendulum lengths, and comprises a base, a first pendulum ball and a second pendulum ball, the base is provided with a vertical column, the middle part of the upper panel of the vertical column is provided with a first through hole which runs through the vertical column from top to bottom, the left and right panels of the lifting column, the front and rear panels of the first telescopic block and the second telescopic block are symmetrically provided with a plurality of clamping grooves, the left and right sides of the lifting column are positioned on the upper panel of the upright column, the front and back sides of the first telescopic block and the second telescopic block are positioned on the left and right panels of the cuboid platform, the clamping devices are symmetrically arranged, the clamping devices are matched with the clamping grooves for use, make lift post, flexible piece and No. two flexible pieces all can stop in appointed position through setting up draw-in groove and chucking device, but also can change the distance between the draw-in groove and realize the locking of different positions.

Description

Coupling pendulum with variable pendulum length

Technical Field

The utility model belongs to the technical field of teaching instrument, concretely relates to changeable coupling pendulum of pendulum length.

Background

Vibration systems with interactions in physics, i.e. coupled vibration systems, are ubiquitous. For example, coupled oscillating circuits in which capacitance and inductance are combined in the electricity, vibration of adjacent atoms in a solid lattice, and electromagnetic coupling of photons and phonons are all coupled vibrations. In mechanics, a coupling pendulum is adopted to research a coupling vibration phenomenon. The pendulum balls of the two simple pendulums are connected by a spring, namely, a coupling pendulum is formed. The pendulum length of the coupling pendulum in the prior art is fixed and cannot be adjusted, and meanwhile, a spring of the coupling pendulum cannot be replaced, namely, the frequency change of the beat phenomenon in the vibration process of the coupling pendulum cannot be well observed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a variable coupling pendulum of pendulum length in order to solve the technical problem of coupling pendulum vibration under different pendulum lengths. In order to solve the technical problem, the utility model discloses a technical scheme does:

a coupling pendulum with variable pendulum length comprises a base, a first pendulum ball and a second pendulum ball, wherein a stand column is arranged on the base, a first through hole penetrating through the stand column from top to bottom is formed in the middle of an upper panel of the stand column, a lifting device is arranged in the first through hole and can move in the first through hole, the lifting device comprises a lifting column, a connecting block is arranged on the lifting column and is arranged in a T shape with the lifting column, a cuboid platform is arranged on the front panel of the connecting block, a second through hole penetrating through the cuboid platform from left to right is formed in the middle of a right panel of the cuboid platform, a first telescopic block and a second telescopic block are symmetrically arranged in the second through hole, a first wire guide groove is formed in each of the left panel and the right panel of the first telescopic block and the second telescopic block, a first pulley and a second pulley are respectively arranged at the rear portion of the stand column and the rear panel of the connecting block, the cuboid platform is symmetrically provided with a third pulley and a fourth pulley, the first pulley and the second pulley are double-groove pulleys, one lead of the first pulley is connected with a first pendulum ball through the second pulley, the third pulley and a lead groove in sequence, the other lead of the first pulley is connected with a second pendulum ball through the second pulley, the fourth pulley and a lead groove in sequence, the first pendulum ball and the second pendulum ball are connected through a spring, the first pulley and the second pulley are driven through a rotating handle, the length of the lead passing through the third pulley and the fourth pulley is controlled at the same time, the length of a cycloid connecting the first pendulum ball 4 and the second pendulum ball 5 is increased or shortened at the same time, the frequency of a beating phenomenon in the motion of the coupling pendulum is changed by adjusting the pendulum length or a spring between the two pendulum balls, so that the physical motion process of the coupling pendulum is more visualized, and the understanding of the coupling pendulum is deepened by students, meanwhile, the observation power and the space imagination of students can be improved, and the understanding of the phenomenon of beating in the coupling pendulum can be more profound.

Further, the equal symmetry of panel is equipped with a plurality of draw-in grooves around panel, a flexible piece and No. two flexible pieces about the lift post the left and right sides of lift post is located the top panel of stand, a flexible piece and No. two flexible pieces around both sides be located the cuboid platform about the panel equal symmetry be equipped with chucking device, chucking device and draw-in groove match the use, make lift post, a flexible piece and No. two flexible pieces all can stop in appointed position through setting up draw-in groove and chucking device, but also can change the distance between the draw-in groove and realize the locking of different positions.

Still further, the clamping device comprises a clamping seat, a sliding block is arranged in the clamping seat, and plug-in components are arranged on the sliding block, so that the plug-in components are driven to be inserted into the clamping groove through the sliding block, and the plug-in components enter the clamping groove through the sliding block, so that the lifting column, the first telescopic block and the second telescopic block are locked.

Furthermore, two second wire grooves are symmetrically arranged on the upper panel of the connecting block, so that the wires connected with the second pulley, the third pulley and the fourth pulley cannot move.

Furthermore, the left panel of a flexible piece and the right panel of No. two flexible pieces all are equipped with the clamp plate, have further guaranteed that the wire of the left panel of a flexible piece and the right panel of No. two flexible pieces can not be because of the pulling pendulum ball, from making the wire beat from a wire casing.

Furthermore, the pressing plate is fixed on the left panel of the first telescopic block and the right panel of the second telescopic block through a plurality of bolts, and the pressing plate is convenient to detach and install through the bolts.

Furthermore, a handle is arranged on one side of the first pulley rotating shaft, so that the first pulley is driven to rotate by rotating the handle.

Further, four angles in base bottom all are equipped with a piece for when whole device was placed on desktop or laboratory bench, make base and desktop or laboratory bench surface leave the clearance through setting up a piece, make things convenient for the experimenter to take and put whole device more.

Furthermore, a fixed block is arranged on the rear panel of the upright column and used for arranging a first pulley; the spring is in threaded connection with the first pendulum ball and the second pendulum ball, the first pulley and the second pulley are guaranteed to be on the same horizontal plane through the fixing block, and the spring is in threaded connection with the first pendulum ball and the second pendulum ball, so that the spring can be screwed off when not in use.

Further, a pulley and No. two pulleys are fixed on the rear panel of fixed block and connecting block through the fixing base respectively, No. three pulleys and No. four pulleys are fixed on the cuboid platform through the fixing base, the fixing base includes two risers and diaphragm, two the riser sets up perpendicularly on the diaphragm, two the symmetry is equipped with No. two through-holes on the riser for be connected with the pivot of a pulley, No. two pulleys, No. three pulleys or No. four pulleys.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a twist grip drives a pulley and No. two pulleys, and the line length of simultaneous control through No. three pulleys and No. four pulleys, and then increases simultaneously or shortens the cycloid length of connecting a pendulum ball 4 and No. two pendulum balls 5, can change the frequency of clapping the phenomenon in the coupling pendulum motion like this through adjusting the pendulum length. Meanwhile, the spring between the two pendulum balls is detachable, and the frequency change of the beat phenomenon in the coupled pendulum can be observed by using different springs. Can make the more visualization of the physical motion process of coupling pendulum like this, help the student to deepen the understanding to the coupling pendulum, can improve student's observation power simultaneously, space imagination, the understanding of clapping the phenomenon in the coupling pendulum can be more profound.

2. The utility model discloses the equal symmetry of panel is equipped with a plurality of draw-in grooves around panel, a flexible piece and No. two flexible pieces about the lift post the left and right sides of lift post is located the top panel of stand, a flexible piece and No. two flexible pieces around both sides be located the cuboid platform about the panel equal symmetry be equipped with chucking device, chucking device and draw-in groove match the use, make lift post, a flexible piece and No. two flexible pieces all can stop in appointed position through setting up draw-in groove and chucking device, but also can change the distance between the draw-in groove and realize the locking of different positions.

3. Chucking device includes the cassette be equipped with the slider in the cassette be equipped with plug-in components on the slider for through the slider that slides, thereby drive plug-in components and insert the draw-in groove, make plug-in components get into the draw-in groove through the slider that slides, thereby with lift column, flexible piece and No. two flexible piece locking.

4. The utility model discloses the top panel symmetry of connecting block is equipped with two wire grooves No. two, has guaranteed that the wire that No. two pulleys and No. three pulleys and No. four pulleys are connected can not remove.

5. The utility model discloses the left panel of a flexible piece and the right panel of No. two flexible pieces all are equipped with the clamp plate, have further guaranteed that the wire of the left panel of a flexible piece and the right panel of No. two flexible pieces can not be because of the pulling pendulum ball, from making the wire beat from a metallic channel.

6. The clamp plate passes through a plurality of bolt fastening at the left surface board of a flexible piece and the right surface board of No. two flexible pieces, through the bolt fastening, conveniently dismantles and installs the clamp plate.

7. The utility model discloses one side of a pulley pivot is equipped with the handle to in through turning handle, thereby drive a pulley rotation.

8. The utility model discloses four angles in base bottom all are equipped with a piece for when whole device was placed on desktop or laboratory bench, make base and desktop or laboratory bench surface leave the clearance through setting up a piece, make things convenient for the experimenter to take and put whole device more.

9. The utility model is provided with a fixed block on the back panel of the upright post for arranging a first pulley; the spring is in threaded connection with the first pendulum ball and the second pendulum ball, the first pulley and the second pulley are guaranteed to be on the same horizontal plane through the fixing block, and the spring is in threaded connection with the first pendulum ball and the second pendulum ball, so that the spring can be screwed off when not in use.

Drawings

Fig. 1 is a schematic diagram of a three-dimensional front view structure of the present invention;

fig. 2 is a schematic diagram of a three-dimensional rear view structure of the present invention;

fig. 3 is a schematic structural diagram of the stand column of the present invention;

FIG. 4 is a schematic structural view of a rectangular parallelepiped platform according to the present invention;

fig. 5 is a schematic structural view of the card seat of the present invention;

FIG. 6 is a schematic structural view of the second expansion block of the present invention;

FIG. 7 is an exploded view of the connection between the spring end and the first pendulum ball of the present invention;

fig. 8 is a schematic structural view of the fixing base of the present invention;

in the figure: 1-base, 2-upright post, 201-first through hole, 3-lifting device, 301-lifting column, 302-connecting block, 303-cuboid platform, 304-second through hole, 305-first telescopic block, 306-second telescopic block, 307-first wire guide groove, 308-first pulley, 309-second pulley, 310-third pulley, 311-fourth pulley, 312-clamping groove, 313-clamping device, 314-clamping seat, 315-sliding block, 316-plug-in component, 317-second wire guide groove, 318-pressing plate, 319-handle, 320-fixing block, 321-fixing seat, 322-vertical plate, 323-transverse plate, 324-third through hole, 4-first swinging ball, 5-second swinging ball, 6-spring, 6-lifting column, 302-connecting block, 303-cuboid platform, 304-second through hole, 305-first telescopic block, 306-fourth telescopic block, 315-second clamping block, 315-sliding block, 7-branch block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in fig. 1-8, a coupling pendulum with a variable pendulum length comprises a base 1, a first pendulum ball 4 and a second pendulum ball 5, wherein four corners of the bottom of the base 1 are respectively provided with a support block 7, the base 1 is provided with a stand column 2, a first through hole 201 penetrating through the stand column 2 from top to bottom is formed in the middle of an upper panel of the stand column 2, a lifting device 3 is arranged in the first through hole 201 and enables the lifting device 3 to move in the first through hole 201, the lifting device 3 comprises a lifting column 301, the lifting column 301 is provided with a connecting block 302, the connecting block 302 and the lifting column 301 are arranged in a T shape, the upper panel of the connecting block 302 is symmetrically provided with two second wire grooves 317, a cuboid platform 303 is arranged on the front panel of the connecting block 302, a second through hole 304 penetrating through the left and right sides of the cuboid platform 303 is arranged in the middle of the right panel of the cuboid platform 303, a first telescopic block 305 and a second telescopic block 306 are symmetrically arranged in the second through hole 304, a first wire groove 307 is arranged on the left panel and the right panel of the first telescopic block 305 and the second telescopic block 306, a press plate 318 is arranged on the left panel of the first telescopic block 305 and the right panel of the second telescopic block 306, the press plate 318 is fixed on the left panel of the first telescopic block 305 and the right panel of the second telescopic block 306 through a plurality of bolts, a first pulley 308 and a second pulley 309 are respectively arranged on the rear portion of the upright post 2 and the rear panel of the connecting block 302, a fixing block 320 is arranged on the rear panel of the upright post 2 and used for arranging the first pulley 308, a handle 319 is arranged on one side of the rotating shaft of the first pulley 308 so as to drive the first pulley 308 to rotate through the rotating handle 319, a third pulley 310 and a fourth pulley 311 are symmetrically arranged on the cuboid platform 303, the first pulley 308 and the second pulley 309 are double-groove pulleys, a wire of a pulley 308 passes through No. two pulleys 309, No. three pulleys 310 and a wire groove 307 in proper order and is connected with pendulum ball 4, another wire of a pulley 308 passes through No. two pulleys 309, No. four pulleys 311 and a wire groove 307 in proper order and is connected with pendulum ball 5 No. two, pendulum ball 4 and pendulum ball 5 are connected through spring 6, spring 6 passes through threaded connection with pendulum ball 4 and pendulum ball 5 No. two.

The left and right panels of the lifting column 301, the front and back panels of the first telescopic block 305 and the second telescopic block 306 are symmetrically provided with a plurality of clamping grooves 312, the left and right sides of the lifting column 301 are located on the upper panel of the upright column 2, the front and back sides of the first telescopic block 305 and the second telescopic block 306 are located on the left and right panels of the cuboid platform 303, clamping devices 313 are symmetrically arranged, the clamping devices 313 and the clamping grooves 312 are matched for use, each clamping device 313 comprises a clamping seat 314, a sliding block 315 is arranged in the clamping seat 314, a plug-in component 316 is arranged on the sliding block 315, and therefore the sliding block 315 is used for driving the plug-in component 316 to be inserted into the clamping grooves 312.

The first pulley 308 and the second pulley 309 are fixed on the rear panels of the fixed block 320 and the connecting block 302 through a fixed seat 321, the third pulley 310 and the fourth pulley 311 are fixed on the cuboid platform 303 through the fixed seat 321, the fixed seat 321 comprises two vertical plates 322 and a transverse plate 323, the two vertical plates 322 are vertically arranged on the transverse plate 323, and the two vertical plates 322 are symmetrically provided with two third through holes 324 for connecting with the rotating shafts of the first pulley 308, the second pulley 309, the third pulley 310 or the fourth pulley 311.

The working principle is as follows: firstly, a spring 6 is selected, then the spring 6 is screwed on a first pendulum ball 4 and a second pendulum ball 5, the telescopic lengths of a first telescopic block 305 and a second telescopic block 306 are adjusted, so that the spring 6 is in an initial unstretched natural state, a lead connecting the first pendulum ball 4 and the second pendulum ball 5 is in a state of being naturally vertical to the plane of a base 1, then the height of a lifting column 301 is adjusted, the first pendulum ball 4 and the second pendulum ball 5 do not collide with a panel on the base 1 in the swinging process, and finally a handle 319 is rotated to adjust the distance between the first pendulum ball 4 and the second pendulum ball 5 and the panel on the base 1, and different motion states of the coupling pendulum are observed (a clamping device 313 can ensure that the first telescopic block 305, the second telescopic block 306 and the lifting column 301 do not move when the required length or height is adjusted).

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A coupling pendulum with a variable pendulum length is characterized in that: the lifting device comprises a base (1), a first swing ball (4) and a second swing ball (5), wherein a stand column (2) is arranged on the base (1), a first through hole (201) penetrating through the stand column (2) from top to bottom is formed in the middle of an upper panel of the stand column (2), a lifting device (3) is arranged in the first through hole (201), the lifting device (3) can move in the first through hole (201), the lifting device (3) comprises a lifting column (301), a connecting block (302) is arranged on the lifting column (301), the connecting block (302) and the lifting column (301) are arranged in a T shape, a cuboid platform (303) is arranged on a front panel of the connecting block (302), a second through hole (304) penetrating through the cuboid platform (303) from left to right is formed in the middle of a right panel of the cuboid platform (303), a first telescopic block (305) and a second telescopic block (306) are symmetrically arranged in the second through hole (304), a first wire groove (307) is arranged on the left panel and the right panel of the first telescopic block (305) and the second telescopic block (306), a first pulley (308) and a second pulley (309) are respectively arranged at the rear part of the upright post (2) and the rear panel of the connecting block (302), a third pulley (310) and a fourth pulley (311) are symmetrically arranged on the cuboid platform (303), the first pulley (308) and the second pulley (309) are double-groove pulleys, one conducting wire of the first pulley (308) is connected with the first pendulum ball (4) through the second pulley (309), the third pulley (310) and the first conducting wire groove (307) in sequence, the other conducting wire of the first pulley (308) is connected with the second pendulum ball (5) through a second pulley (309), a fourth pulley (311) and a first conducting wire groove (307) in sequence, the first pendulum ball (4) is connected with the second pendulum ball (5) through a spring (6).

2. The coupled pendulum with the variable pendulum length of claim 1, wherein: the equal symmetry of panel is equipped with a plurality of draw-in grooves (312) around the panel about lifting column (301), flexible piece (305) and flexible piece (306) No. two the front and back panel of lifting column (301) both sides are located the top panel of stand (2), flexible piece (305) and flexible piece (306) No. two all symmetries are equipped with chucking device (313) about on being located the panel about cuboid platform (303), chucking device (313) and draw-in groove (312) match the use.

3. The coupled pendulum with the variable pendulum length of claim 2, wherein: the clamping device (313) comprises a clamping seat (314), a sliding block (315) is arranged in the clamping seat (314), and an insert (316) is arranged on the sliding block (315) so that the insert (316) is driven to be inserted into the clamping groove (312) through sliding the sliding block (315).

4. The coupled pendulum with the variable pendulum length of claim 1, wherein: two second wire grooves (317) are symmetrically arranged on the upper panel of the connecting block (302).

5. The coupled pendulum with the variable pendulum length of claim 1, wherein: and a pressure plate (318) is arranged on the left panel of the first telescopic block (305) and the right panel of the second telescopic block (306).

6. The coupled pendulum with the variable pendulum length of claim 5, wherein: the pressing plate (318) is fixed on the left panel of the first telescopic block (305) and the right panel of the second telescopic block (306) through a plurality of bolts.

7. The coupled pendulum with the variable pendulum length of claim 1, wherein: a handle (319) is arranged on one side of the rotating shaft of the first pulley (308), so that the first pulley (308) can be driven to rotate by rotating the handle (319).

8. The coupled pendulum with the variable pendulum length of claim 1, wherein: four corners at the bottom of the base (1) are provided with supporting blocks (7).

9. The coupled pendulum with the variable pendulum length of claim 1, wherein: a fixed block (320) is arranged on the rear panel of the upright post (2) and is used for arranging a first pulley (308); the spring (6) is connected with the first pendulum ball (4) and the second pendulum ball (5) through threads.

10. The coupled pendulum with the variable pendulum length of claim 9, wherein: no. one pulley (308) and No. two pulley (309) are fixed on the rear panel of fixed block (320) and connecting block (302) through fixing base (321) respectively, No. three pulley (310) and No. four pulley (311) are fixed on cuboid platform (303) through fixing base (321), fixing base (321) include two riser (322) and diaphragm (323), two riser (322) set up perpendicularly on diaphragm (323), two be equipped with two No. three through-holes (324) on riser (322) symmetrically for be connected with the pivot of a pulley (308), No. two pulley (309), No. three pulley (310) or No. four pulley (311).

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