CN210073067U

CN210073067U - Uniform-speed circular motion centripetal acceleration demonstration instrument for high school physics

Info

Publication number: CN210073067U
Application number: CN201920478133.8U
Authority: CN
Inventors: 张安航
Original assignee: Zhang Anhang
Current assignee: Zhang Anhang
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2020-02-14
Anticipated expiration: 2029-04-10

Abstract

The utility model belongs to the technical field of teaching aids, in particular to a high school physics centripetal acceleration demonstrator with uniform speed circular motion, which comprises a fixing part with a hollow structure, a motor which is positioned on the upper surface of the fixing part and is used for rotation, supporting pieces which are positioned on two sides of the motor and are used for supporting, a door plate is hinged on the outer side wall of the fixing part, a first fixing block is arranged inside the fixing part, and a fixing groove is arranged on the front surface of one end of the first fixing block; the installation plate is lifted off from the fixed rod by the loosening bolt, the dismounting modes of the two support pieces are the same, the connecting plate slides towards the inside of the fixed plate, under the matching of the convex block and the groove, the connecting plate gradually slides to the inside of the fixed plate until the connecting plate contacts the limiting block, under the action of the rotating shaft, the fixed plate is rotated until the connecting plate is clamped into the clamping groove of the support piece, and then the storage of the support pieces is completed, the carrying is convenient, the unstable gravity center is avoided to appear in the moving process, and the condition that the demonstration instrument is damaged is caused.

Description

Uniform-speed circular motion centripetal acceleration demonstration instrument for high school physics

Technical Field

The utility model relates to a teaching aid field especially relates to a high school physics is with at uniform velocity circular motion centripetal acceleration demonstration appearance.

Background

The centripetal force is the resultant external force acting force pointing to the curvature center when an object moves along a circle or a curve track, and the acceleration and the centripetal force are one of necessary learning courses of high school physics, and teachers need to help students to better understand and learn by means of a demonstration instrument when learning centripetal acceleration courses.

For example, patent No. CN201721046953.7 discloses a centripetal acceleration demonstrator for uniform circular motion, which has the characteristics of simple device manufacturing and visual experimental phenomenon, but has certain problems.

Technical problems exist in the prior art.

1. The existing centripetal acceleration demonstration instrument is inconvenient to store due to the fact that the supporting piece is generally not detachable when the existing centripetal acceleration demonstration instrument is not used or stored, and the phenomenon that the gravity center of the demonstration instrument is unstable and the demonstration instrument topples over is easily caused when the existing centripetal acceleration demonstration instrument is carried or moved, so that the probability of damage to the demonstration instrument is increased;

2. in the use centripetal acceleration demonstration appearance demonstration's in-process, can increase or alleviate the weight of balancing weight, because current demonstration appearance does not possess the space of accomodating or placing the balancing weight, has certain limitation, brings inconvenience for the user.

In order to solve the problems, the application provides a centripetal acceleration demonstrator for uniform-speed circular motion for high and medium physics.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to solve the technical problems of inconvenient carrying or moving, high probability of damage of a demonstration instrument and inconvenient storage of a balancing weight in the background technology, the utility model provides a uniform-speed circular motion centripetal acceleration demonstration instrument for high school physics, a support piece and a fixed plate can be rotated to be overlapped under the action of a rotating shaft, and the connecting plate can slide to the inside of the fixed plate, so that the length of the fixed plate is further shortened; design into cavity with the mounting to be equipped with first fixed block and second fixed block in inside, the balancing weight is placed to the draw-in groove on two stoppers of accessible, plays the effect of accomodating, is convenient for increase at any time and can reduces the quantity of balancing weight, convenient to use.

(II) technical scheme

In order to solve the problems, the utility model provides a high school physics is with uniform velocity circular motion centripetal acceleration demonstration appearance, including hollow structure's mounting, be located the mounting upper surface and be used for the pivoted motor, be located the support piece that motor both sides are used for supporting, the lateral wall of mounting articulates there is the door plant, the internally mounted of mounting has first fixed block, the one end front surface of first fixed block has seted up the fixed slot, first fixed block is close to one side of fixed slot has seted up first standing groove, be equipped with first card strip in the first standing groove, first card strip and first fixed block fixed connection, the mounting is close to the upper surface mounting of first fixed block has the second fixed block, the second fixed block is close to one side of fixed slot has seted up the spread groove, the second fixed block is close to one side of spread groove has seted up the second standing groove, a second clamping strip is fixedly arranged on the inner side of the top of the second placing groove, a speed measurer is installed on one side, away from the door plate, of the second fixing block, a speed regulator is fixedly arranged on one side, close to the motor, of the fixing piece, a fixing rod is fixedly connected to an output shaft of the motor, a supporting piece is fixedly connected to the top end of the fixing rod, and the speed measurer, the motor and the speed regulator are all electrically connected with an external power supply;

the bottom surface of the supporting piece is fixedly provided with a mounting plate, the supporting piece is fixedly connected with the fixed rod through the mounting plate, the outer side wall of one end, far away from the mounting plate, of the supporting piece is rotatably connected with a fixed plate with a hollow structure, a limiting block is fixedly arranged inside the fixed plate, the inner side wall of the fixed plate is provided with a groove, the inner side wall of the mounting plate is connected with a connecting plate in a sliding mode, the outer side wall of the connecting plate is fixedly provided with a convex block, one end, far away from the fixed plate, of the connecting plate is fixedly provided with a fixing ring, the upper surface of the supporting piece is provided with a clamping groove, the front surface, close to the fixed plate;

the support piece is kept away from the fixed reflector panel that is equipped with in one end bottom surface of mounting panel, solid fixed ring's lateral wall is fixed and is equipped with fixed rope, fixed rope is kept away from solid fixed ring's one end fixedly connected with balancing weight.

Preferably, the fixing plate is a Z-shaped plate, and one end of the fixing plate, which is far away from the rotating shaft, is in the same horizontal line with the supporting piece.

Preferably, the clamping groove is a T-shaped groove, and the width of the clamping groove is matched with that of the fixing plate.

Preferably, the connecting plate with the fixed plate passes through the recess with the lug is block connection in the circumferential direction, just the connecting plate is kept away from the one end of solid fixed ring with the stopper contacts.

Preferably, the number of the supporting pieces is two, the two supporting pieces are symmetrically distributed on two sides of the fixing rod, and the two supporting pieces are fixedly connected with the fixing rod through the mounting plate and the bolts.

Preferably, the bottom of fixed slot is semi-circular, the fixed slot with the spread groove is the bar groove, the fixed slot with support piece looks adaptation.

Preferably, the first placing groove and the second placing groove are square grooves, and the first clamping strip and the second clamping strip are respectively located on the bottom surface of the first placing groove and the top surface of the second placing groove.

The above technical scheme of the utility model has following profitable technological effect:

1. the outer side wall of each supporting piece is rotatably connected with a fixed plate, the inner side wall of each fixed plate is slidably connected with a connecting plate, when the centripetal acceleration demonstrator is not used or stored, a user can detach the fixed rope on the fixed ring, the mounting plate is detached from the fixed rod through the loosening bolts, the detaching modes of the two supporting pieces are the same, the connecting plates slide towards the inside of the fixed plates, the connecting plates slide to the inside of the fixed plates step by step under the matching of the convex blocks and the grooves until the connecting plates contact the limiting blocks, then the fixed plates are rotated until the fixed plates are clamped into the clamping grooves of the supporting pieces under the action of the rotating shafts, and then the storage of the supporting pieces is completed, so that the situation that the demonstrator is damaged due to unstable gravity center;

2. the fixing piece is designed into a hollow form, a first fixing block and a second fixing block are arranged in the fixing piece, a first placing groove and a second placing groove are respectively formed in the surfaces of the first fixing block and the second fixing block, the first placing groove and the second placing groove are square grooves, the two placing grooves are communicated, the outline of the balancing weight is met, the balancing weight is convenient to place and store, the connection between the balancing weight and the two fixing blocks is tight, the fixing is firm, the first clamping strip and the second clamping strip are respectively located on the bottom surface of the first placing groove and the top surface of the second placing groove, two sides of the balancing weight are fixed through the matching of the first clamping strip and the second clamping strip, the stability is further improved, and a user can conveniently use the balancing weight at any time in the demonstration process.

Drawings

Fig. 1 is the utility model provides a high school physics is with the structural schematic diagram of uniform velocity circular motion centripetal acceleration demonstration appearance.

Fig. 2 is the utility model provides a support piece and fixed plate installation drawing in the homokinetic circular motion centripetal acceleration demonstration appearance for high school physics.

Fig. 3 is the utility model provides a mounting panel structure sketch map among high school physics is with uniform velocity circular motion centripetal acceleration demonstration appearance.

Fig. 4 is the utility model provides a high school physics is with first fixed block and the split drawing of second fixed block in the uniform velocity circular motion centripetal acceleration demonstration appearance.

Reference numerals:

1. a fixing member; 2. a door panel; 3. a first fixed block; 31. fixing grooves; 32. a first placing groove; 33. a first clip strip; 4. a second fixed block; 41. connecting grooves; 42. a second placing groove; 43. a second card strip; 5. a velometer; 6. a motor; 7. a speed regulator; 8. fixing the rod; 9. a support member; 91. mounting a plate; 92. a fixing plate; 921. a limiting block; 922. a groove; 93. a connecting plate; 931. a bump; 932. a fixing ring; 94. a card slot; 95. a rotating shaft; 10. a reflector; 11. fixing a rope; 12. and a balancing weight.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-4, the utility model provides a high school physics is with at uniform velocity circular motion centripetal acceleration demonstration appearance, including hollow structure's mounting 1, be located mounting 1 upper surface and be used for pivoted motor 6, be located motor 6 both sides and be used for supporting support member 9, mounting 1's lateral wall articulates there is door plant 2, mounting 1's internally mounted has first fixed block 3, the one end front surface of first fixed block 3 has seted up fixed slot 31, first fixed block 3 is close to one side of fixed slot 31 and has seted up first standing groove 32, be equipped with first card strip 33 in the first standing groove 32, first card strip 33 and first fixed block 3 fixed connection, mounting 1 is close to the upper surface of first fixed block 3 and has second fixed block 4, second fixed block 4 is close to one side of fixed slot 31 and has seted up spread groove 41, second fixed block 4 is close to one side of spread groove 41 and has seted up second standing groove 42, the fixed second card strip 43 that is equipped with in top inboard of second standing groove 42, the velometer 5 is installed to the one side that door plant 2 was kept away from to second fixed block 4, and one side that mounting 1 is close to motor 6 is fixed and is equipped with speed regulator 7, and motor 6's output shaft fixedly connected with dead lever 8, the top fixedly connected with support piece 9 of dead lever 8, velometer 5, motor 6 and speed regulator 7 all with external power source electric connection.

In the utility model, when the centripetal acceleration demonstrator is used, if the clump weight 12 is needed to be increased or decreased, the clump weight 12 in the two placing grooves can be directly taken out for use, because the first placing groove 32 and the second placing groove 42 are square grooves which are communicated with each other, the clump weight 12 can be conveniently placed and stored, and the clump weight 12 is tightly connected with the two fixing blocks, because the first clamping strip 33 and the second clamping strip 43 are respectively positioned at the bottom surface of the first placing groove 32 and the top surface of the second placing groove 42, the two sides of the clump weight 12 are fixed by the matching of the first clamping strip 33 and the second clamping strip 43, the stability is further improved, the clump weight 12 can be conveniently taken by a user at any time, when the centripetal acceleration demonstrator is not used or after the use is finished, the user firstly detaches the fixing rope 11 on the fixing ring 932, the mounting plate 91 is detached from the fixing rod 8 by the loosening bolt, two support piece 9's dismantlement mode is to the same, slide connecting plate 93 to the inside of fixed plate 92, under the cooperation of lug 931 and recess 922, make connecting plate 93 slide to the inside of fixed plate 92 gradually, until connecting plate 93 contacts stopper 921, later under the effect of pivot 95, rotate fixed plate 92 until the card go into support piece 9's draw-in groove 94 in, and then accomplish taking in of support piece 9, later in fixed slot 31 and the spread groove 41 with two support piece 9 fixed to mounting 1, reduce the volume of whole centripetal acceleration demonstration appearance, improve centrobaric stability, the reduction appears in the in-process that carries, lead to the probability that the demonstration appearance damaged.

As shown in fig. 2, the fixing plate 92 is a Z-shaped plate, and an end of the fixing plate 92 away from the rotating shaft 95 is at the same level with the supporting member 9.

It should be noted that, the Z-shaped plate enables the fixing plate 92 to rotate to overlap the supporting member 9, and the other end of the fixing plate can be kept at the same level with the supporting member 9, so as to ensure that the counterweight 12 on the fixing rope 11 can move along a circle, and normal demonstration is not affected.

As shown in fig. 2, the locking groove 94 is a T-shaped groove, and the width of the locking groove 94 is matched with the width of the fixing plate 92.

It should be noted that the T-shaped groove conforms to the contour of the end of the fixing plate 92 away from the rotating shaft 95, so that the fixing plate 92 can be fixed to the surface of the supporting member 9, thereby achieving the effect of convenient storage.

As shown in fig. 2, the connecting plate 93 and the fixing plate 92 are engaged with each other circumferentially by the groove 922 and the projection 931, and an end of the connecting plate 93 remote from the fixing ring 932 is in contact with the stopper 921.

It should be noted that, the user of being convenient for adjusts the distance of solid fixed ring 932 to dead lever 8 according to oneself needs, and the radius of circular motion promptly, through stopper 921 suggestion user connecting plate 93 has accomodate the end.

As shown in fig. 3, two supporting members 9 are provided, the two supporting members 9 are symmetrically distributed on two sides of the fixing rod 8, and the two supporting members 9 are fixedly connected with the fixing rod 8 through a mounting plate 91 and a bolt.

It should be noted that the bolt sequentially penetrates through the mounting plate 91 and the fixing rod 8 of the two supporting members 9, so that the two supporting members 9 are fixed at one time, and the disassembly and assembly are convenient.

As shown in fig. 4, the bottom end of the fixing groove 31 is semicircular, the fixing groove 31 and the connecting groove 41 are strip-shaped grooves, and the fixing groove 31 is matched with the supporting member 9.

It should be noted that, when the semicircular fixing groove 31 conforms to the vertical of the support member 9, the sectional area of the mounting plate 91 is favorable for fixing the mounting plate 91, and the fixing groove 31 and the connecting groove 41 are used for fixing the support member 9, so that the support member 9 is convenient to store.

As shown in fig. 4, the first placement groove 32 and the second placement groove 42 are square grooves, and the first card strip 33 and the second card strip 43 are respectively located on the bottom surface of the first placement groove 32 and the top surface of the second placement groove 42.

It should be noted that, when the first placing groove 32 and the second placing groove 42 are communicated, they can be used to fix the counterweight block 12, and the first clamping strip 33 cooperates with the second clamping strip 43 to stabilize the connection between the counterweight block 12 and the first fixing block 3 and the second fixing block 4.

The utility model discloses a theory of operation and use flow: when the centripetal acceleration demonstrator is used, the motor 6 drives the fixed rod 8 to rotate when operating, and then drives the two supporting pieces 9 to rotate, and then drives the balancing weights 12 at the two ends to rotate, so as to visually show the centripetal movement condition to students, the speed regulator 7 is used for adjusting the rotating speed of the motor 6, the laser emitted by the speed regulator 5 irradiates the reflector panel 10, the counting on the speed regulator 5 is used for calculating the angular speed, if the balancing weights 12 are needed to be increased or decreased, the balancing weights 12 in the two placing grooves can be directly taken out for use, because the first placing groove 32 and the second placing groove 42 are square grooves and the two placing grooves are communicated, the appearance of the balancing weights 12 is met, the balancing weights 12 can be conveniently placed and stored, and the connection between the balancing weights 12 and the two fixed blocks is tight, because the first clamping strip 33 and the second clamping strip 43 are respectively positioned on the bottom surface of the first placing groove 32 and the top surface of the second placing, the two sides of the balancing weight 12 are fixed through the matching of the first clamping strip 33 and the second clamping strip 43, the stability is further improved, a user can conveniently take the balancing weight 12 at any time, when the centripetal acceleration demonstration instrument is used, the user firstly detaches the fixing rope 11 on the fixing ring 932, the mounting plate 91 is detached from the fixing rod 8 through the turning loose bolt, the detaching modes of the two supporting pieces 9 are the same, the connecting plate 93 slides towards the inside of the fixing plate 92, under the matching of the convex block 931 and the groove 922, the connecting plate 93 gradually slides to the inside of the fixing plate 92 until the connecting plate 93 contacts the limiting block 921, then under the action of the rotating shaft 95, the fixing plate 92 is rotated until being clamped into the clamping groove 94 of the supporting piece 9, the storage of the supporting piece 9 is completed, then the two supporting pieces 9 are fixed into the fixing groove 31 and the connecting groove 41 of the fixing piece 1, and the, the stability of the center of gravity is improved, the probability of damage to the demonstration instrument caused by the fact that the demonstration instrument is carried is reduced, and the purpose of convenience in carrying is achieved.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a high school physics is with at uniform velocity circular motion centripetal acceleration demonstration appearance, which comprises a hollow structure's mounting (1), is located mounting (1) upper surface is used for pivoted motor (6), is located support piece (9) that motor (6) both sides are used for supporting, the lateral wall of mounting (1) articulates there is door plant (2), the internally mounted of mounting (1) has first fixed block (3), fixed slot (31) have been seted up to the one end front surface of first fixed block (3), first fixed block (3) are close to first standing groove (32) have been seted up to one side of fixed slot (31), be equipped with first card strip (33) in first standing groove (32), first card strip (33) with first fixed block (3) fixed connection, mounting (1) are close to the last surface mounting of first fixed block (3) has second fixed block (4), a connecting groove (41) is formed in one side, close to the fixing groove (31), of the second fixing block (4), a second placing groove (42) is formed in one side, close to the connecting groove (41), of the second fixing block (4), a second clamping strip (43) is fixedly arranged on the inner side of the top of the second placing groove (42), a speed measurer (5) is installed on one side, far away from the door panel (2), of the second fixing block (4), a speed regulator (7) is fixedly arranged on one side, close to the motor (6), of the fixing piece (1), a fixing rod (8) is fixedly connected with an output shaft of the motor (6), a support piece (9) is fixedly connected with the top end of the fixing rod (8), and the speed measurer (5), the motor (6) and the speed regulator (7) are all electrically connected with an external power supply;

the fixed mounting panel (91) that is equipped with in bottom surface of support piece (9), support piece (9) pass through mounting panel (91) with dead lever (8) fixed connection, support piece (9) are kept away from the fixed plate (92) that is connected with hollow structure is rotated to the one end lateral wall of mounting panel (91), the fixed stopper (921) that is equipped with in inside of fixed plate (92), the inside wall of fixed plate (92) is seted up fluted (922), the inside wall sliding connection of mounting panel (91) has connecting plate (93), the lateral wall of connecting plate (93) is fixed and is equipped with lug (931), the one end that fixing plate (92) were kept away from to connecting plate (93) is fixed and is equipped with solid fixed ring (932), draw-in groove (94) have been seted up to the upper surface of support piece (9), support piece (9) are close to the one end front, the rotating shaft (95) penetrates through the clamping groove (94) and the fixing plate (92), and the fixing plate (92) is rotatably connected with the supporting piece (9) through the rotating shaft (95);

keep away from support piece (9) the fixed reflector panel (10) that is equipped with in one end bottom surface of mounting panel (91), the fixed rope (11) that are equipped with of lateral wall of solid fixed ring (932), fixed rope (11) are kept away from the one end fixedly connected with balancing weight (12) of solid fixed ring (932).

2. The homonymous circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein the fixed plate (92) is a Z-shaped plate, and one end of the fixed plate (92) far away from the rotating shaft (95) is in the same horizontal line with the support member (9).

3. The homodromic circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein, the draw-in groove (94) is a T-shaped groove, the width of draw-in groove (94) and the width of fixed plate (92) are adapted.

4. The homodyne circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein the connecting plate (93) and the fixed plate (92) are connected by the groove (922) and the projection (931) in a clamping manner in the circumferential direction, and one end of the connecting plate (93) far away from the fixed ring (932) is in contact with the limiting block (921).

5. The homodromic circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein there are two support pieces (9), two support pieces (9) are symmetrically distributed on both sides of the fixed rod (8), and two support pieces (9) are fixedly connected with the fixed rod (8) through the mounting plate (91) and a bolt.

6. The homonymous circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein the bottom end of the fixed groove (31) is semicircular, the fixed groove (31) and the connecting groove (41) are strip-shaped grooves, and the fixed groove (31) is matched with the support member (9).

7. The homonymous circular motion centripetal acceleration demonstration instrument for high school physics according to claim 1, wherein the first and second placement grooves (32, 42) are square grooves, and the first and second clamping strips (33, 43) are respectively located on the bottom surface of the first placement groove (32) and the top surface of the second placement groove (42).