Demonstrator for decomposition of force on inclined plane

Abstract

The invention discloses a demonstrator for decomposition of force on an inclined plane, which comprises a base, the top of the base is provided with a right-angle L-shaped demonstrator main body and a semicircular arc dial, the demonstrator main body is rotatably connected with the base through a damping hinge, the arc dial is fixedly mounted on the base, and the right-angle L-shaped demonstrator main body is rotatably connected with the base through a damping hinge. The rotating circle center position of the demonstrator body coincides with the circle center position of the arc dial, the demonstrator body is movably arranged on the arc dial in a sleeving mode, and the parallel component force sensor which can be always kept parallel to inclined planes of different angles is designed on the rotatable demonstrator body. According to the utility model, the parallel component force and the vertical component force of the force application ring at any inclination angle can be rapidly measured and calculated through the force application ring and the vertical component force sensor which can be always vertical to the inclined planes at different angles, and specific values can be directly displayed through the display, so that the stress condition at any inclination angle can be intuitively demonstrated; the teaching aid can play a role in assisting teaching and improve the teaching quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of physical force demonstration instruments, and particularly relates to a force decomposition demonstrator on an inclined plane. Background Art

[0002] In the teaching of force decomposition in middle school physics, students are often required to decompose forces according to the effects of force. For example, an object on an inclined plane has the effects of sliding down along the inclined plane and pressing against the inclined plane. The gravity is often decomposed into a component force along the inclined plane and a component force perpendicular to the inclined plane, which are also often called: the sliding component force and the normal pressure. However, the effect of the object pressing against the inclined plane is generally not easy to observe, and teachers lack demonstration experiments in the classroom to assist teaching, so that students cannot intuitively feel the effect of force.

[0003] Therefore, the present invention designs a force decomposition demonstrator on an inclined plane. Summary of the Invention

[0004] The purpose of the present invention is to provide a force decomposition demonstrator on an inclined plane to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A force decomposition demonstrator on an inclined plane, including a base. A demonstrator main body in a right-angled L shape and a semicircular arc scale are arranged on the top of the base. The demonstrator main body is rotationally connected to the base through a damping hinge. The arc scale is fixedly installed on the base. The center position of the rotation of the demonstrator main body coincides with the center position of the arc scale, and the demonstrator main body is movably sleeved on the arc scale. An arc groove is arranged on the arc scale. An inclined indicating block is fixedly arranged on the demonstrator main body, and the inclined indicating block can slide along the arc groove as the demonstrator main body rotates. A vertically distributed vertical force connection seat is movably arranged on the horizontal right-angled side of the demonstrator main body. A parallel force sensor connected to the vertical force connection seat is arranged inside the demonstrator main body. A horizontally distributed parallel force connection seat is movably arranged on the vertical right-angled side of the demonstrator main body. A vertical force sensor connected to the parallel force connection seat is arranged inside the demonstrator main body. The outer ends of the vertical force connection seat and the parallel force connection seat are commonly connected to the same force application ring. A parallel force display and a vertical force display for displaying numerical values are arranged on the front surface of the demonstrator main body. A controller for controlling the vertical force sensor, the parallel force sensor, the parallel force display, and the vertical force display is also arranged inside the demonstrator main body.

[0006] Preferably, a spirit level for detecting the levelness of the base is arranged on the top of the base.

[0007] Preferably, a DC socket is provided on the main body of the demonstrator, and a switch is provided on one side of the main body of the demonstrator.

[0008] Preferably, the outer ends of both the parallel component connecting seat and the vertical component connecting seat are movably connected to the force application ring through shaft members, and the arc angle between the parallel component connecting seat and the vertical component connecting seat is degrees.

[0009] Preferably, the center of the arc groove coincides with the center of the arc scale disk, and angle scale marks are provided on the arc scale disk.

[0010] Preferably, the vertical component connecting seat and the vertical component sensor are perpendicularly distributed to each other, and the parallel component connecting seat and the parallel component sensor are also perpendicularly distributed to each other.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] By designing a parallel component sensor on the rotatable main body of the demonstrator that can always be parallel to inclined planes at different angles, and a vertical component sensor that can always be perpendicular to inclined planes at different angles, the parallel component and the vertical component of the force application ring at any inclination angle can be quickly calculated, and the specific values can be directly displayed through a display, enabling the force application situation at any inclination angle to be intuitively demonstrated, which can play a role in assisting teaching and improving teaching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 is a side three-dimensional structural schematic diagram of the present invention;

[0015] Figure 3 is an internal structural schematic diagram of the present invention;

[0016] In the figure: 1, base; 2, main body of the demonstrator; 3, force application ring; 4, parallel component connecting seat; 5, vertical component connecting seat; 6, switch; 7, arc scale disk; 8, inclination indicating block; 9, arc groove; 10, damping hinge; 11, parallel component display; 12, vertical component display; 13, level; 14, parallel component sensor; 15, vertical component sensor; 16, DC socket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1

[0019] Please refer to Figure 1 and Figure 3 The present invention provides a technical solution: a force decomposition demonstrator on an inclined plane, including a base 1. At the top of the base 1, there is a demonstrator main body 2 in a right-angled L shape and a semi-circular arc scale 7. The demonstrator main body 2 is rotationally connected to the base 1 through a damping hinge 10. The damping hinge 10 can ensure that after the demonstrator main body 2 rotates to any angle, it can continuously maintain the demonstrator main body 2 stationary at this angular position, which can simulate the situations of inclined planes with different inclination angles. The arc scale 7 is fixedly installed on the base 1. The center position of the rotation of the demonstrator main body 2 coincides with the center position of the arc scale 7, and the demonstrator main body 2 is movably sleeved on the arc scale 7. An arc groove 9 is provided on the arc scale 7, and an inclined indicating block 8 is fixedly provided on the demonstrator main body 2. The inclined indicating block 8 can slide along the arc groove 9 as the demonstrator main body 2 rotates, which can ensure the amount of the rotation angle of the demonstrator main body 2, and the specific angle value can be indicated by the inclined indicating block 8. A vertically distributed vertical component force connection seat 5 is movably provided on the horizontal right-angled side of the demonstrator main body 2. A parallel component force sensor 14 connected to the vertical component force connection seat 5 is provided inside the demonstrator main body 2. A horizontally distributed parallel component force connection seat 4 is movably provided on the vertical right-angled side of the demonstrator main body 2. A vertical component force sensor 15 connected to the parallel component force connection seat 4 is provided inside the demonstrator main body 2. The outer ends of the vertical component force connection seat 5 and the parallel component force connection seat 4 are commonly connected to the same force application ring 3. A parallel component force display 11 and a vertical component force display 12 for displaying values are provided on the front surface of the demonstrator main body 2. A controller for controlling the vertical component force sensor 14, the parallel component force sensor 15, the parallel component force display 11, and the vertical component force display 12 is also provided inside the demonstrator main body 2.

[0020] In this embodiment, preferably, a spirit level 13 for detecting the levelness of the base 1 is provided on the top of the base 1. In this embodiment, preferably, a DC socket 16 is provided on the demonstrator main body 2 and can be powered by a 5V power adapter. A switch 6 is provided on one side of the demonstrator main body 2, and the entire demonstrator can be started and stopped through the switch 6. In this embodiment, preferably, the outer ends of both the parallel component connection seat 4 and the vertical component connection seat 5 are movably connected to the force application ring 3 through shaft members, and the arc angle between the parallel component connection seat 4 and the vertical component connection seat 5 is 90 degrees. In this embodiment, preferably, the center of the arc groove 9 coincides with the center of the arc scale 7, and angle scale marks are provided on the arc scale 7 to facilitate observing the specific inclination angle, and the required inclination angle can be adjusted according to the scale marks. In this embodiment, preferably, the vertical component connection seat 5 and the vertical component sensor 14 are distributed perpendicular to each other, and the parallel component connection seat 4 and the parallel component sensor 15 are also distributed perpendicular to each other to ensure the stability and accuracy of detection.

[0021] Although the embodiments of the present invention have been shown and described, see the above detailed description. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A force decomposition demonstrator on an inclined plane, comprising a base (1), characterized in that: At the top of the base (1), there is a demonstrator body (2) in a right-angled L shape and a semicircular arc scale (7). The demonstrator body (2) is rotatably connected to the base (1) through a damping hinge (10). The arc scale (7) is fixedly installed on the base (1). The center position of the rotation of the demonstrator body (2) coincides with the center position of the arc scale (7), and the demonstrator body (2) is movably sleeved on the arc scale (7). An arc groove (9) is provided on the arc scale (7), and an inclined indicating block (8) is fixedly provided on the demonstrator body (2). The inclined indicating block (8) can slide along the arc groove (9) as the demonstrator body (2) rotates. A vertically distributed vertical component force connecting seat (5) is movably provided on the horizontal right-angled side of the demonstrator body (2). A parallel component force sensor (14) connected to the vertical component force connecting seat (5) is provided inside the demonstrator body (2). A horizontally distributed parallel component force connecting seat (4) is movably provided on the vertical right-angled side of the demonstrator body (2). A vertical component force sensor (15) connected to the parallel component force connecting seat (4) is provided inside the demonstrator body (2). The outer ends of the vertical component force connecting seat (5) and the parallel component force connecting seat (4) are commonly connected to the same force application ring (3). A parallel component force display (11) and a vertical component force display (12) for displaying numerical values are provided on the front surface of the demonstrator body (2). A controller for controlling the vertical component force sensor (14), the parallel component force sensor (15), the parallel component force display (11), and the vertical component force display (12) is also provided inside the demonstrator body (2).

2. The force decomposition demonstrator on an inclined plane according to claim 1, characterized in that: A spirit level (13) for detecting the levelness of the base (1) is provided at the top of the base (1).

3. A demonstration device for decomposing forces on an inclined plane according to claim 1, characterized in that: A DC socket (16) is provided on the demonstrator body (2), and a switch (6) is provided on one side of the demonstrator body (2).

4. The force decomposition demonstrator on an inclined plane according to claim 1, characterized in that: The outer ends of the parallel component force connecting seat (4) and the vertical component force connecting seat (5) are both movably connected to the force application ring (3) through shaft parts, and the arc angle between the parallel component force connecting seat (4) and the vertical component force connecting seat (5) is 90 degrees.

5. A demonstration device for the decomposition of forces on an inclined plane according to claim 1, characterized in that: The center of the arc groove (9) coincides with the center of the arc scale (7), and angle scale marks are provided on the arc scale (7).

6. The force decomposition demonstrator on an inclined plane according to claim 1, characterized in that: The vertical component force connecting seat (5) and the vertical component force sensor (14) are distributed perpendicularly to each other, and the parallel component force connecting seat (4) and the parallel component force sensor (15) are also distributed perpendicularly to each other.

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