CN210722042U

CN210722042U - Decomposition demonstration teaching aid for physical force of high school

Info

Publication number: CN210722042U
Application number: CN201920806810.4U
Authority: CN
Inventors: 朱菁菁
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-06-09
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to an experiment demonstration equipment technical field especially relates to a decomposition demonstration teaching aid of high school's physics power. The angle adjusting device comprises an angle adjusting plate, a fixing plate, an angle adjusting device, a first force rod, a second force rod, a third force rod and a push-pull force meter, wherein the angle adjusting plate is fixedly arranged above the fixing plate and is in the shape of an inverted semicircular protractor; the angle adjusting device comprises an upper adjusting block and a lower fixing block, a first force rod, a second force rod and a third force rod are rotatably arranged at three corners of the angle adjusting device, and a tension meter is fixedly connected above the first force rod. The utility model discloses not only can make the student carry out more directly perceived, more profound understanding to the decomposition of force, but also can guarantee the accuracy in the measurement process, conveniently carry, have very strong practicality.

Description

Decomposition demonstration teaching aid for physical force of high school

Technical Field

The utility model relates to an experiment demonstration equipment technical field especially relates to a decomposition demonstration teaching aid of high school's physics power.

Background

The force decomposition is an important basic theoretical knowledge point in high school physics teaching, a textbook generally adopts an xy-axis decomposition mode for explanation, a teacher also carries out x-axis and y-axis decomposition on a blackboard during actual teaching, and then calculates the transverse stress condition and the longitudinal stress condition through mathematical operation.

Some force resolving demonstration teaching aids exist in the prior art, but the space required by the related teaching aids is large, and the teaching aids are inconvenient for teachers to carry; or the direction of the relevant force is easy to deviate during the use process, so that the measurement is inaccurate; or the offset angle of the resolving power cannot be set arbitrarily, and the application range is narrow.

Therefore, a teaching aid for demonstrating the resolution of high school physical force is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a decomposition demonstration teaching aid for high school physics force.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a decomposition demonstration teaching aid for physical forces in high school is characterized by comprising an angle adjusting plate, a fixing plate, an angle adjusting device, a first force rod, a second force rod, a third force rod and a push-pull force meter, wherein the angle adjusting plate is fixedly arranged above the fixing plate and is in an inverted semicircular protractor shape, a sliding groove is formed in the center above the front face of the angle adjusting plate, and the angle adjusting device is slidably arranged in the sliding groove;

the angle adjusting device comprises an upper adjusting block and a lower fixing block, the first force rod, the second force rod and the third force rod are rotatably installed at three corners of the angle adjusting device, and the tension meter is fixedly connected above the first force rod.

Furthermore, the upper adjusting block comprises an edge groove, a rotary inner groove and a rotating block; wherein the corner groove is cylindrical;

a rotating groove is formed in the rotating inner groove;

the rotating block is rotatably arranged in the rotating inner groove, and the rotating slide block is arranged below the inner part of the rotating block.

Further, the lower fixing block comprises a rotary outer groove and a corner block, the corner block is cylindrical, and the outer diameter of the corner block is 0.1-1mm smaller than that of the corner groove; the first force rod, the second force rod and the third force rod are sleeved on the corner block.

Furthermore, a first groove, a second groove and a sliding block are arranged inside the rotating outer groove; wherein the slide block slides in the slide groove;

a communicating groove is formed between the first groove and the second groove; and a buffer device is arranged below the second groove and the communication groove.

Furthermore, the buffer device comprises a buffer plate and a buffer spring, one end of the buffer spring is fixedly connected with the buffer plate, and the other end of the buffer spring is fixedly connected to the bottom surface of the lower groove of the second groove; the buffer device is arranged in the lower groove of the second groove, and the buffer plate and the lower groove of the second groove are on an arc line with the same curvature.

Furthermore, a fixed handle is fixedly arranged above the fixed plate.

Compared with the prior art, the utility model, its beneficial effect does:

1. by arranging the angle adjusting device, an included angle between the second force rod and the third force rod can be set to be any angle, so that a teacher can decompose force into two component forces of various angles and visually demonstrate the force to students; meanwhile, a contrast test can be set, the force resolution of different angles is carried out on the same force, two or more groups of test data are directly obtained, and students can understand relevant theoretical knowledge of the force resolution more deeply;

2. by arranging the first force rod, the second force rod and the third force rod and using the rod body as the force conductor, compared with a rope or other existing objects as the force conductor, the force conductor has the advantages that the defect that the rope or other linear objects are easy to deform can be avoided, the accurate direction of force transmission is ensured, and the accuracy of the direction of the decomposed force is ensured;

3. the device is small in size, does not need a floor stand, is convenient for teachers to carry, and has strong practicability.

Drawings

Fig. 1 is a schematic structural diagram of a teaching aid for demonstrating the resolution of high school physical force according to the present invention;

FIG. 2 is a schematic structural diagram of an upper adjusting block;

FIG. 3 is a schematic structural view of a lower fixing block;

FIG. 4 is a schematic structural view of a first force rod, a second force rod and a third force rod sleeved on a lower fixing block;

FIG. 5 is a cross-sectional view of the rotating outer tub;

fig. 6 is a schematic structural view of the buffering device.

In the figure: the device comprises an angle adjusting plate 1, a fixing plate 2, an angle adjusting device 3, a first force rod 4, a second force rod 5, a third force rod 6, a push-pull force meter 7, an upper adjusting block 8, a lower fixing block 9, a rotating block 10, an inner rotating groove 11, a rotating slide block 12, a rotating edge 13, an angle groove 14, an angle block 15, an outer rotating groove 16, a first groove 17, a second groove 18, a communicating groove 19, a buffer device 20, a slide block 21, a fixed handle 22, a sliding groove 23, a buffer spring 2001 and a buffer plate 2002.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "back", "vertical", "lateral", and the like 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, and 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.

Referring to fig. 1-6, a decomposition demonstration teaching aid for high school physical force is characterized by comprising an angle adjusting plate 1, a fixing plate 2, an angle adjusting device 3, a first force rod 4, a second force rod 5, a third force rod 6 and a push-pull force meter 7, wherein the angle adjusting plate 1 is fixedly arranged above the fixing plate 2, the angle adjusting plate 1 is in the shape of an inverted semicircular protractor, a sliding groove 23 is formed in the center above the front face of the angle adjusting plate 1, and the angle adjusting device 3 is slidably arranged in the sliding groove 23; a fixed handle 22 is fixedly arranged above the fixed plate 2;

the angle adjusting device 3 comprises an upper adjusting block 8 and a lower fixing block 9, the first force rod 4, the second force rod 5 and the third force rod 6 are rotatably arranged at three corners of the angle adjusting device 3, and a tension meter 7 is fixedly connected above the first force rod 4; the angle adjusting device 3 is slidably mounted in the sliding groove 23 through the sliding block 21, the sliding block 21 is a trapezoidal sliding block with a narrow top and a wide bottom, the sliding groove 23 is a trapezoidal sliding groove with a rectangular cross section and a narrow top and a wide inside in height, and the sliding block 21 is slidably mounted in the sliding groove 23.

The upper adjusting block 8 comprises an edge groove 14, a rotary inner groove 11 and a rotary block 10; wherein, the corner groove 14 is cylindrical; a rotary groove is arranged in the rotary inner groove 11; a rotating edge 13 is arranged below the outer part of the rotating block 10, the rotating block 10 is rotatably arranged in the rotating inner groove 11, and a rotating slide block 12 is arranged below the inner part of the rotating block 10; the rotating slide block 12 is a trapezoidal slide block with a narrow top and a wide bottom, the rotating groove is a trapezoidal sliding groove with a rectangular section and a narrow top and a wide inside in height, and the rotating slide block 12 is slidably arranged in the rotating groove; the rotary slide 12 rotates between the first recess 17 and the second recess 18; when the pressing operation is carried out, the rotating block 10 is rotated by the same downward pressure to drive the rotating slide block 12 to rotate in the first groove 17, when the rotating slide block 12 rotates to the communicating groove 19, an operator feels the downward groove and presses downward to press the rotating slide block 12 into the second groove 18, and therefore the pressing operation is realized; when the upward pulling operation is performed, the rotating block 10 is rotated by upward pulling force to drive the rotating slide block 12 to rotate in the second groove 18, when the rotating slide block 12 rotates to the communicating groove 19, an operator feels the upward groove and pulls out the upward groove, and the rotating slide block 12 is lifted to the first groove 17, so that the upward pulling operation is realized.

The lower fixing block 9 comprises a rotary outer groove 16 and a corner block 15, the corner block 15 is cylindrical, and the outer diameter of the corner block 15 is 0.1-1mm smaller than that of the corner groove 14; the first force rod 4, the second force rod 5 and the third force rod 6 are sleeved on the corner block 15;

the first force rod 4 is fixedly sleeved on the corner block 15, and the second force rod 5 and the third force rod 6 are rotatably sleeved and/or directly sleeved on the corner block 15; the one end of first power pole 4, second power pole 5 and third power pole 6 is for cup jointing the ring, and the cup jointing ring of first power pole 4 is fixed to cup joint on corner piece 15, and the cup jointing ring of second power pole 5 and third power pole 6 cup joints on corner piece 15, when pulling out rotating block 10, carries out angle modulation through the rotation, has adjusted the angle after, presses rotating block 10, accomplishes the angle fixation of second power pole 5 and third power pole 6.

A first groove 17, a second groove 18 and a sliding block 21 are arranged inside the outer rotating groove 16; wherein the slide block 21 slides in the slide groove 23; a communicating groove 19 is arranged between the first groove 17 and the second groove 18; a buffer device 20 is arranged below the second groove 18 connected with the communicating groove 19; the buffer device 20 comprises a buffer plate 2002 and a buffer spring 2001, wherein one end of the buffer spring 2001 is fixedly connected with the buffer plate 2002, and the other end of the buffer spring 2001 is fixedly connected with the lower groove bottom surface of the second groove 18; the buffer device 20 is disposed in the lower groove of the second groove 18, and the buffer plate 2002 is on the same curvature arc line as the lower groove of the second groove 18.

Instructions for use: when the device is used, the angle of the second force rod 5 and the third force rod 6 is adjusted and the adjusted angle is fixed by rotating, pressing and pulling up the rotating block 10 3; after the angles of the second force rod 5 and the third force rod 6 are adjusted, the spring dynamometers at the two ends of the second force rod 5 and the third force rod 6 are pulled along the directions of the second force rod 5 and the third force rod 6, and then the reading of the push-pull dynamometer 7 is read out, so that a group of force decomposition data is obtained.

Further, the above-mentioned fixed connection and fixed mounting are to be understood in a broad sense unless otherwise specifically stated or limited, and may be, for example, welding, gluing, or integrally formed, as is conventional in the art.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A decomposition demonstration teaching aid for physical forces in high school is characterized by comprising an angle adjusting plate, a fixing plate, an angle adjusting device, a first force rod, a second force rod, a third force rod and a push-pull force meter, wherein the angle adjusting plate is fixedly arranged above the fixing plate and is in an inverted semicircular protractor shape, a sliding groove is formed in the center above the front face of the angle adjusting plate, and the angle adjusting device is slidably arranged in the sliding groove;

2. The decomposition demonstration teaching aid of high school physical force according to claim 1, wherein the upper adjusting block comprises a corner groove, an inner rotating groove and a rotating block; wherein the corner groove is cylindrical;

a rotating groove is formed in the rotating inner groove;

3. The decomposition demonstration teaching aid of high school physics force according to claim 2, characterized in that the lower fixed block comprises a rotary outer groove and a corner block, the corner block is cylindrical, and the outer diameter of the corner block is 0.1-1mm smaller than the outer diameter of the corner groove; the first force rod, the second force rod and the third force rod are sleeved on the corner block.

4. The decomposition demonstration teaching aid of high school physical force according to claim 3, wherein a first groove, a second groove and a sliding block are arranged inside the rotating outer groove; wherein the slide block slides in the slide groove;

5. The decomposition demonstration teaching aid of high school physical force according to claim 4, wherein the buffer device comprises a buffer plate and a buffer spring, one end of the buffer spring is fixedly connected with the buffer plate, and the other end of the buffer spring is fixedly connected to the bottom surface of the lower groove of the second groove; the buffer device is arranged in the lower groove of the second groove, and the buffer plate and the lower groove of the second groove are on an arc line with the same curvature.

6. The decomposition demonstration teaching aid of high school physics forces according to claim 1, characterized in that fixed handle is fixedly installed above the fixed plate.