CN212229900U

CN212229900U - Electromagnetic damping demonstration instrument

Info

Publication number: CN212229900U
Application number: CN202020852514.0U
Authority: CN
Inventors: 赵书玉; 王德忠; 赵乐韵; 李志华; 赵野
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-25
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses an electromagnetic damping demonstration appearance, the on-line screen storage device comprises a base and a support, the support is including falling L type support and T type support, it is provided with the recess to be close to left side position department on the base, inlay inside the recess bottom of falling L type support, T type support utilizes the screw fixation to be close to right side position department on the base through the fixed plate, the upper end of falling L type support is provided with the connecting rod, the left side of connecting rod is provided with first anticreep piece, the right side of connecting rod has from left to right set gradually the gasket, the spacing block, the left side presss from both sides tight piece, round aluminum plate, right side presss from both sides tight piece and second anticreep piece, the upper end of T type support is provided with the pivot, the left end of pivot is connected with the rotor plate, the both ends of rotor plate all are provided with. The utility model is simple in operation, the demonstration is convenient.

Description

Electromagnetic damping demonstration instrument

Technical Field

The utility model relates to a demonstration appearance especially relates to an electromagnetic damping demonstration appearance.

Background

Electromagnetic damping refers to the phenomenon that when a conductor moves in a magnetic field, an induced current can make the conductor subject to an ampere force, and the direction of the ampere force always hinders the movement of the conductor, and the electromagnetic damping phenomenon is derived from the principle of electromagnetic induction, and the macroscopic phenomenon is: when the closed conductor and the magnetic pole move relatively, electromagnetic resistance is generated between the closed conductor and the magnetic pole to block the relative movement. This phenomenon can be explained by lenz's law: when the closed conductor and the magnetic pole move to cut the magnetic induction line, the closed conductor generates an induced current or is called as a dynamic current because the magnetic flux penetrated by the closed conductor changes. The magnetic field generated by this current will hinder the relative motion of the two. The resistance is proportional to the magnetic induction intensity, the relative movement speed and other physical quantities of the magnet. In order to enable students to understand the electromagnetic induction principle and observe the electromagnetic damping phenomenon clearly and deeply, and facilitate teachers to perform vivid and light demonstration in class, an electromagnetic damping demonstration instrument with a simple structure and convenient operation is needed to perform electromagnetic damping demonstration.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the electromagnetic damping demonstration instrument overcomes the defects of the prior art, is convenient to assemble and disassemble, and has an obvious demonstration effect.

The utility model discloses a technical scheme who solves technical problem and take is:

an electromagnetic damping demonstration instrument comprises a base and a bracket, wherein the bracket comprises an inverted L-shaped bracket and a T-shaped bracket, a groove is arranged on the base at the position close to the left side, the bottom end of the inverted L-shaped bracket is embedded in the groove, the T-shaped bracket is fixed on the base by a fixing plate through screws at a position close to the right side, the upper end of the inverted L-shaped bracket is provided with a connecting rod, the left side of the connecting rod is provided with a first anti-falling block (not shown in the figure), the right side of the connecting rod is sequentially provided with a gasket, an isolating block, a left clamping block (not shown in the figure), a round aluminum plate, a right clamping block and a second anti-falling block from left to right, the upper end of the T-shaped bracket is provided with a rotating shaft, the left end of the rotating shaft is connected with a rotating plate, both ends of the rotating plate are provided with magnets, the right end of the rotating shaft is provided with a rotating drum, and one side of the rotating drum is connected with a rotating handle through a connecting handle.

The inverted L-shaped support comprises an upright post and a supporting block, the bottom end of the upright post is embedded in the groove, the top end of the upright post is connected with the supporting block, and the upright post and the supporting block are of an integrated inverted L-shaped structure; be provided with horizontal first through-hole on the supporting shoe, the connecting rod sets up in the first through-hole, the both ends of connecting rod all stretch out the both ends of first through-hole, the supporting shoe is left be provided with on the connecting rod first anticreep piece, the supporting shoe right side be provided with on the connecting rod gasket and spacing block, second anticreep piece sets up the low order end of connecting rod, the spacing block with be provided with round aluminum plate between the second anticreep piece, round aluminum plate's the left and right sides is provided with the tight piece of left side clamp and the tight piece of right side clamp respectively, round aluminum plate can relative rotation on the connecting rod.

The T-shaped support comprises a support column and a connecting cylinder, the lower end of the support column is fixed on the base through a fixing plate by using a screw, the upper end of the support column is provided with the connecting cylinder, and the support column and the connecting cylinder form an integrated T-shaped structure; be provided with horizontal second perforating hole on the connecting cylinder, the pivot sets up in the second perforating hole, the both ends of pivot all stretch out the both ends of second perforating hole, the connecting cylinder is left be connected with in the pivot the rotor plate, on the rotor plate with the pivot junction is provided with the pivot hole, the pivot is passed the pivot hole, just be provided with left clamp gasket (not drawn in the picture) and right clamp gasket in the second axis of rotation of the left and right sides of rotor plate respectively, the connecting cylinder right side the pivot with the internal connection of rotary drum.

The rotating plate is an iron plate and is magnetically connected with the magnet, and the circle center of the connecting rod and the circle center of the rotating shaft are on the same horizontal line.

The utility model discloses an actively beneficial effect is:

1. the bottom end of the inverted L-shaped bracket of the utility model is embedded in the groove, the T-shaped bracket is fixed on the base by the fixing plate and the fixing plate by the screw, the two are detachably connected, the assembly and the disassembly are convenient,

2. the utility model discloses the transfer board is connected for magnetism with magnet, can be when doing the electron damping test, light whether have magnet and how to move and demonstrate, and then form the demonstration result, easy operation, teaching effect is good.

3. The utility model discloses simple structure, the demonstration effect is showing, classroom convenient to use, and operation platform adopts the full open type structure, and the student can be clear see the electron damping phenomenon, very big increase student's hands-on ability and study enthusiasm to understanding electromagnetic induction principle that can be deep-seated.

Drawings

Fig. 1 is a schematic structural diagram of the electromagnetic damping demonstration instrument of the present invention.

Detailed Description

The invention will be further explained and explained with reference to the drawings and the embodiments:

referring to fig. 1: in the figure, 1-base, 2-inverted L-shaped bracket, 3-T-shaped bracket, 4-groove, 5-fixing plate, 6-screw, 7-connecting rod, 8-gasket, 9-spacing block, 10-round aluminum plate, 11-right clamping block, 12-second anti-dropping block, 13-rotating shaft, 14-rotating plate, 15-magnet, 16-rotating cylinder, 17-connecting handle, 18-rotating handle, 19-right clamping gasket, 2-1-upright column, 2-2 supporting block, 3-1-supporting column and 3-2-connecting cylinder.

Example (b): an electromagnetic damping demonstration instrument comprises a base 1 and a support, wherein the support comprises an inverted L-shaped support 2 and a T-shaped support 3, a groove 4 is arranged on the base 1 at a position close to the left side, the bottom end of the inverted L-shaped support 2 is embedded in the groove 4, the T-shaped support 3 is fixed on the base 1 at a position close to the right side by a fixing plate 5 through a screw 6, a connecting rod 7 is arranged at the upper end of the inverted L-shaped support 2, a first anti-falling block is arranged on the left side of the connecting rod 7, a gasket 8, an isolating block 9 and a left clamping block are sequentially arranged on the right side of the connecting rod 7 from left, round aluminum plate 10, right clamp piece 11 and second anticreep piece 12, the upper end of T type support 3 is provided with pivot 13, and the left end of pivot 13 is connected with rotor plate 14, and the both ends of rotor plate 14 all are provided with magnet 15, and the right-hand member of pivot 13 is provided with rotary drum 16, and one side of rotary drum 16 is connected with turning handle 18 through connecting handle 17.

The inverted L-shaped support 2 comprises an upright post 2-1 and a supporting block 2-2, the bottom end of the upright post 2-1 is embedded in the groove 4, the top end of the upright post 2-1 is connected with the supporting block 2-2, and the upright post 2-1 and the supporting block 2-2 are of an integrated inverted L-shaped structure; the supporting block 2-2 is provided with a transverse first through hole, the connecting rod 7 is arranged in the first through hole, two ends of the connecting rod 7 extend out of two ends of the first through hole, the left connecting rod 7 of the supporting block 2-2 is provided with a first anti-falling block, the right connecting rod 7 of the supporting block 2-2 is provided with a gasket 8 and an isolating block 9, the second anti-falling block 12 is arranged at the rightmost end of the connecting rod 7, a round aluminum plate 10 is arranged between the isolating block 9 and the second anti-falling block 12, the left side and the right side of the round aluminum plate 10 are respectively provided with a left clamping block and a right clamping block 11, and the round aluminum plate 10 can relatively rotate on the connecting.

The T-shaped support 3 comprises a support column 3-1 and a connecting cylinder 3-2, the lower end of the support column 3-1 is fixed on the base 1 through a fixing plate 5 by using a screw 6, the upper end of the support column 3-1 is provided with the connecting cylinder 3-2, and the support column 3-1 and the connecting cylinder 3-2 form an integrated T-shaped structure; the connecting cylinder 3-2 is provided with a transverse second through hole, the rotating shaft 13 is arranged in the second through hole, two ends of the rotating shaft 13 extend out of two ends of the second through hole, the rotating plate 14 is connected to the rotating shaft 13 on the left side of the connecting cylinder 3-2, a rotating shaft hole is formed in the position, connected with the rotating shaft 13, of the rotating plate 14, the rotating shaft 13 penetrates through the rotating shaft hole, the second rotating shafts on the left side and the right side of the rotating plate 14 are respectively provided with a left clamping gasket 8 and a right clamping gasket 19, and the rotating shaft 13 on the right side of the connecting cylinder 3-2 is connected with the interior of the.

The rotating plate 14 is an iron plate and is magnetically connected with the magnet 15, and the circle center of the connecting rod 7 and the circle center of the rotating shaft 13 are on the same horizontal line.

When the demonstration is carried out in a classroom, the magnet 15 is removed, then the rotating handle 18 is shaken, and at the moment, the rotating plate 14 can be seen to rotate along with the rotating handle 18, but the round aluminum plate 10 is not moved; then, the magnets 15 are placed at the two ends of the rotating plate 14, the rotating handle 18 is shaken again, at this time, the rotating plate 14 can be seen to rotate along with the rotating handle 18, the round aluminum plate 10 also rotates along with the rotating plate, and the round aluminum plate 10 rotates no matter whether the rotating handle 18 shakes clockwise or anticlockwise, the electromagnetic damping phenomenon is particularly obvious, and the rotating speed of the round aluminum plate 10 is consistent with that of the hand-operated rotating handle 18.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides an electromagnetic damping demonstration appearance, includes base (1) and support, characterized by: the support comprises an inverted L-shaped support (2) and a T-shaped support (3), a groove (4) is formed in the position, close to the left side, of the base (1), the bottom end of the inverted L-shaped support (2) is embedded in the groove (4), the T-shaped support (3) is fixed to the position, close to the right side, of the base (1) through a fixing plate (5) by means of a screw (6), a connecting rod (7) is arranged at the upper end of the inverted L-shaped support (2), a first anti-falling block is arranged on the left side of the connecting rod (7), a gasket (8), an isolating block (9), a left clamping block, a round aluminum plate (10), a right clamping block (11) and a second anti-falling block (12) are sequentially arranged on the right side of the connecting rod (7), a rotating shaft (13) is arranged at the upper end of the T-shaped support (3), and a rotating plate (14) is connected to, magnets (15) are arranged at two ends of the rotating plate (14), a rotating drum (16) is arranged at the right end of the rotating shaft (13), and a rotating handle (18) is connected to one side of the rotating drum (16) through a connecting handle (17).

2. The electromagnetic damping demonstration instrument of claim 1 wherein: the inverted L-shaped support (2) comprises an upright post (2-1) and a supporting block (2-2), the bottom end of the upright post (2-1) is embedded in the groove (4), the supporting block (2-2) is connected to the top end of the upright post (2-1), and the upright post (2-1) and the supporting block (2-2) are of an integrated inverted L-shaped structure; a first through hole is transversely arranged on the supporting block (2-2), the connecting rod (7) is arranged in the first through hole, both ends of the connecting rod (7) extend out of both ends of the first through hole, the connecting rod (7) on the left side of the supporting block (2-2) is provided with the first anti-dropping block, the connecting rod (7) at the right side of the supporting block (2-2) is provided with the gasket (8) and the isolation block (9), the second anti-falling block (12) is arranged at the rightmost end of the connecting rod (7), a round aluminum plate (10) is arranged between the isolation block (9) and the second anti-falling block (12), the left side and the right side of the round aluminum plate (10) are respectively provided with a left clamping block and a right clamping block (11), the round aluminum plate (10) can rotate relatively on the connecting rod (7).

3. The electromagnetic damping demonstration instrument of claim 1 wherein: the T-shaped support (3) comprises a support column (3-1) and a connecting cylinder (3-2), the lower end of the support column (3-1) is fixed on the base (1) through a fixing plate (5) by a screw (6), the connecting cylinder (3-2) is arranged at the upper end of the support column (3-1), and the support column (3-1) and the connecting cylinder (3-2) form an integrated T-shaped structure; the connecting cylinder (3-2) is provided with a transverse second through hole, the rotating shaft (13) is arranged in the second through hole, two ends of the rotating shaft (13) extend out of two ends of the second through hole, the rotating shaft (13) on the left side of the connecting cylinder (3-2) is connected with the rotating plate (14), a rotating shaft hole is formed in the joint of the rotating plate (14) and the rotating shaft (13), the rotating shaft (13) penetrates through the rotating shaft hole, a left clamping gasket (8) and a right clamping gasket (8) are arranged on second rotating shafts on the left side and the right side of the rotating plate (14) respectively, and the rotating shaft (13) on the right side of the connecting cylinder (3-2) is connected with the inner part of the rotating cylinder (16).

4. The electromagnetic damping demonstration instrument of claim 1 wherein: the rotating plate (14) is an iron plate and is magnetically connected with the magnet (15), and the circle center of the connecting rod (7) and the circle center of the rotating shaft (13) are on the same horizontal line.