Mechanical energy demonstration board for high school physics

Abstract

The invention discloses a mechanical energy demonstration board for high school physics, and belongs to the technical field of teaching aids for high school physics, the mechanical energy demonstration board for high school physics comprises a base, one side of the top end of the base is fixedly provided with a guide rail, and the top end of the guide rail is slidably connected with a large sliding block; a scale plate is fixedly installed on the other side of the top end of the base, a reset mechanism is arranged in the guide rail, a kinetic energy demonstration mechanism is arranged at the top end of the guide rail, a transparent cylinder is further fixedly installed on the other side of the top end of the base, and a positioning mechanism is arranged on one side of the scale plate. By arranging the reset mechanism and the kinetic energy demonstration mechanism, the operation part of a teacher is transferred to the rear side of the device, so that the sight on the front side of the demonstration board is prevented from being blocked, students can clearly see the demonstration motion process, the learning experience and the understanding depth are enhanced, the teaching effect of the mechanical energy demonstration board is improved, and the teaching efficiency of the mechanical energy demonstration board is improved. And the dynamic demonstration is more intuitive and understandable.

Description

Technical Field

[0001] The invention belongs to the technical field of high school physics teaching aids, and specifically relates to a mechanical energy demonstration board used for high school physics. Background Art

[0002] Teaching aids are indispensable tools for educators to teach students well in their educational activities. Demonstration boards are auxiliary tools for teaching activities. In the process of high school physics teaching, it is necessary to explain and demonstrate the theorems in physics, so that students can more easily understand and master various theorems and laws in physics, such as the law of conservation of momentum and the law of conservation of mechanical energy, and demonstrate them by experimental means, which can improve teaching effectiveness and teaching quality. In order to demonstrate the law of conservation of momentum and the law of conservation of mechanical energy, a new teaching tool is needed for teaching.

[0003] The existing mechanical energy demonstration board performs the demonstration of kinetic energy and potential energy through manual operation, which will block the front of the demonstration board, making it impossible for some students to clearly see the movement process of the demonstration, reducing the teaching effect of the mechanical energy demonstration board. At the same time, the manual operation steps are complicated and the accuracy is not high.

[0004] Therefore, it is urgent to provide a mechanical energy demonstration board for high school physics to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a mechanical energy demonstration board for high school physics.

[0006] The technical solution adopted to solve the above technical problems is: a mechanical energy demonstration board for high school physics, including a base, a guide rail is fixedly installed on one side of the top of the base, a large slider is slidably connected to the top of the guide rail, a scale plate is fixedly installed on the other side of the top of the base, a reset mechanism is arranged inside the guide rail, a kinetic energy demonstration mechanism is arranged on the top of the guide rail, a transparent cylinder is also fixedly installed on the other side of the top of the base, a positioning mechanism is arranged on one side of the scale plate, and a gravitational potential energy demonstration mechanism is arranged inside the transparent cylinder and on one side of the scale plate.

[0007] Preferably, the reset mechanism includes a fixed slide rail fixed to the top end of the guide rail, a limiting slide rail is slidably installed inside the fixed slide rail, a connecting slide rod is fixedly connected to one side of the limiting slide rail, a movable slide rail is slidably installed inside the guide rail, a reset slide rail is slidably installed inside the movable slide rail, and the interior of the reset slide rail is slidably connected to the outer surface of the connecting slide rod.

[0008] Through the above technical solution, the reset slide plate drives the limit slide plate to move forward and backward synchronously through the connecting slide rod, and the reset slide plate moves left and right through the moving slide rail and the connecting slide rod.

[0009] Preferably, the kinetic energy demonstration mechanism includes two support rods fixed to the top end of the guide rail, the other ends of the two support rods are fixedly connected to a mounting plate, the interior of the mounting plate is fixedly connected to a rope, and the other end of the rope is fixedly connected to a metal ball.

[0010] Through the above technical solution, the metal ball rotates on the mounting plate through the rope.

[0011] Preferably, a first operating rod is rotatably mounted inside the mounting plate, a first driving rod is fixedly connected to an outer surface of the first operating rod, and a ball seat plate is fixedly connected to the other end of the first driving rod, and a groove of the ball seat plate is mounted in an inlay with a metal ball.

[0012] Through the above technical solution, the first operating rod drives the first driving rod and the ball seat plate to rotate through the mounting plate.

[0013] Preferably, a second operating rod is rotatably mounted on the outer surface of the first operating rod, a second driving rod is fixedly connected to the outer surface of the second operating rod, and a magnet suction seat is fixedly connected to the other end of the second driving rod.

[0014] Through the above technical solution, the second operating rod drives the second driving rod and the magnetic suction seat to rotate through the first driving rod, and the magnetic suction seat magnetically attracts the metal ball through the ball seat plate.

[0015] Preferably, the positioning mechanism includes a fixed plate fixed to one side of the scale plate, the other end of the fixed plate is fixedly connected to the mounting plate, a rotating rod is rotatably installed inside the fixed plate, two limit plates are fixedly connected to the top end of the fixed plate, and two positioning rings are fixedly connected to the outer surface of the rotating rod.

[0016] Through the above technical solution, the two positioning rings are rotated and switched by the rotating rod, and the limiting plate makes the two positioning rings and the transparent cylinder respectively in the same vertical direction.

[0017] Preferably, a magnet sleeve is fixedly connected to one side of the scale plate, a lifting iron rod is magnetically connected to the interior of the magnet sleeve, and one end of the lifting iron rod is rotatably connected to the outer surface of the rotating rod.

[0018] Through the above technical solution, the lifting iron rod is lifted and lowered by the magnet sleeve, and the magnet sleeve fixes the lifting iron rod by magnetic attraction.

[0019] Preferably, the gravity potential energy demonstration mechanism includes a lifting handle slidably mounted inside a scale plate, a top end of the lifting handle is fixedly connected to a cylindrical spring, and a small sliding block is frictionally connected to the inside of the transparent cylinder.

[0020] Through the above technical solution, the lifting handle drives the small slider to move up and down through the cylindrical spring.

[0021] Preferably, one side of the scale plate is fixedly connected to a mounting rail, a capping rod is slidably installed inside the mounting rail, a limiting telescopic rod is fixedly connected to the bottom of the capping rod, the outer surface of the telescopic end of the limiting telescopic rod is slidably connected to the inside of a lifting handle, an insertion rod is fixedly connected to one side of the telescopic end of the limiting telescopic rod, a socket is provided inside the lifting handle, and the outer surface of the insertion rod is engaged with the inside of the socket.

[0022] Through the above technical solution, the limiting telescopic rod drives the capping rod to limit the top of the small slider, and at the same time, the limiting telescopic rod is connected to the lifting handle through the insertion rod, so that the limiting telescopic rod can drive the lifting handle to move up and down.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The present invention is provided with a reset mechanism and a kinetic energy demonstration mechanism, so that the part operated by the teacher is transferred to the back side of the device, avoiding the obstruction of the view of the front of the demonstration board, so that the students can clearly see the movement process of the demonstration, thereby enhancing the learning experience and the depth of understanding, improving the teaching effect of the mechanical energy demonstration board, and making the dynamic demonstration more intuitive and easy to understand;

[0025] (2) The present invention simplifies the manual operation process and reduces the complexity of the operation steps by providing a positioning mechanism and a gravitational potential energy demonstration mechanism, so that teachers can demonstrate gravitational potential energy more easily and efficiently, improve the accuracy and repeatability of the demonstration, and at the same time ensure the high precision of the demonstration results, thereby better meeting the requirements for accuracy and efficiency in the modern educational environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the guide rail and reset mechanism structure of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the kinetic energy demonstration mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the explosion structure of the kinetic energy demonstration mechanism of the present invention;

[0030] Figure 5It is a schematic cross-sectional structure diagram of the positioning mechanism and the gravitational potential energy demonstration mechanism of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the positioning mechanism and the gravitational potential energy demonstration mechanism of the present invention;

[0032] Figure 7 It is a schematic cross-sectional structure diagram of the gravitational potential energy demonstration mechanism of the present invention;

[0033] Figure 8 It is a partial structural schematic diagram of the gravitational potential energy demonstration mechanism of the present invention.

[0034] Figure numerals: 1, base; 2, guide rail; 3, large slider; 4, scale plate; 5, reset mechanism; 501, fixed slide rail; 502, limit slide plate; 503, connecting slide rod; 504, movable slide rail; 505, reset slide plate; 6, kinetic energy demonstration mechanism; 601, support rod; 602, mounting plate; 603, rope; 604, metal ball; 605, first operating rod; 606, first driving rod; 607, ball seat plate; 608, second operating rod ; 609, second driving rod; 610, magnet suction seat; 7, transparent cylinder; 8, positioning mechanism; 801, fixing plate; 802, rotating rod; 803, limiting plate; 804, positioning ring; 805, magnet sleeve; 806, lifting iron rod; 9, gravitational potential energy demonstration mechanism; 901, lifting handle; 902, cylindrical spring; 903, small slider; 904, mounting slide rail; 905, capping rod; 906, limiting telescopic rod; 907, insertion rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] like Figure 1-Figure 8As shown, a mechanical energy demonstration board for high school physics in this embodiment includes a base 1, a guide rail 2 is fixedly installed on one side of the top of the base 1, a large slider 3 is slidably connected to the top of the guide rail 2, a scale plate 4 is fixedly installed on the other side of the top of the base 1, a reset mechanism 5 is arranged inside the guide rail 2, the reset mechanism 5 includes a fixed slide rail 501 fixed to the top of the guide rail 2, a limiting slide plate 502 is slidably installed inside the fixed slide rail 501, one side of the limiting slide plate 502 is fixedly connected to a connecting slide bar 503, a moving slide rail 504 is slidably installed inside the guide rail 2, a reset slide plate 505 is slidably installed inside the moving slide rail 504, the interior of the reset slide plate 505 is slidably connected to the outer surface of the connecting slide bar 503, the reset slide plate 505 drives the limiting slide plate 502 to move forward and backward synchronously through the connecting slide bar 503, and the reset slide plate 505 moves left and right through the moving slide rail 504 and the connecting slide bar 503.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, a kinetic energy demonstration mechanism 6 is provided at the top of the guide rail 2. The kinetic energy demonstration mechanism 6 includes two support rods 601 fixed to the top of the guide rail 2. The other ends of the two support rods 601 are fixedly connected to a mounting plate 602. A rope 603 is fixedly connected inside the mounting plate 602. The other end of the rope 603 is fixedly connected to a metal ball 604. The metal ball 604 rotates on the mounting plate 602 through the rope 603. A first operating rod 605 is rotatably installed inside the mounting plate 602. A first driving rod 606 is fixedly connected to the outer surface of the first operating rod 605. The other end of the first driving rod 606 is fixedly connected to a ball seat plate 60 7. The groove of the ball seat plate 607 is fitted with the metal ball 604. The first operating rod 605 drives the first driving rod 606 and the ball seat plate 607 to rotate through the mounting plate 602. The second operating rod 608 is rotatably installed on the outer surface of the first operating rod 605. The outer surface of the second operating rod 608 is fixedly connected with the second driving rod 609. The other end of the second driving rod 609 is fixedly connected with the magnet suction seat 610. The second operating rod 608 drives the second driving rod 609 and the magnet suction seat 610 to rotate through the first driving rod 606. The magnet suction seat 610 magnetically attracts the metal ball 604 through the ball seat plate 607.

[0038] like Figure 5-Figure 7As shown, a transparent cylinder 7 is also fixedly installed on the other side of the top of the base 1, and a positioning mechanism 8 is provided on one side of the scale plate 4. The positioning mechanism 8 includes a fixed plate 801 fixed to one side of the scale plate 4, and the other end of the fixed plate 801 is fixedly connected to the mounting plate 602. A rotating rod 802 is rotatably installed inside the fixed plate 801, and two limit plates 803 are fixedly connected to the top of the fixed plate 801. Two positioning rings 804 are fixedly connected to the outer surface of the rotating rod 802. The two positioning rings 804 are rotated and switched by the rotating rod 802. The limit plate 803 makes the two positioning rings 804 and the transparent cylinder 7 in the same vertical direction respectively. A magnet sleeve 805 is fixedly connected to one side of the scale plate 4, and a lifting iron rod 806 is magnetically connected to the inside of the magnet sleeve 805. One end of the lifting iron rod 806 is rotatably connected to the outer surface of the rotating rod 802, and the lifting iron rod 806 is lifted and lowered by the magnet sleeve 805. The magnet sleeve 805 magnetically fixes the lifting iron rod 806.

[0039] like Figure 5-Figure 8 As shown, a gravity potential energy demonstration mechanism 9 is arranged inside the transparent cylinder 7 and on one side of the scale plate 4. The gravity potential energy demonstration mechanism 9 includes a lifting handle 901 slidably installed inside the scale plate 4. The top of the lifting handle 901 is fixedly connected with a cylindrical spring 902. A small slider 903 is frictionally connected inside the transparent cylinder 7. The lifting handle 901 drives the small slider 903 to move up and down through the cylindrical spring 902. A mounting rail 904 is fixedly connected to one side of the scale plate 4. A capping rod 905 is slidably installed inside the mounting rail 904. The bottom of the capping rod 905 A limited telescopic rod 906 is fixedly connected, and the outer surface of the telescopic end of the limited telescopic rod 906 is slidably connected to the inside of the lifting handle 901. An insertion rod 907 is fixedly connected to one side of the telescopic end of the limited telescopic rod 906. A socket is provided inside the lifting handle 901, and the outer surface of the insertion rod 907 is engaged with the inside of the socket. The limited telescopic rod 906 drives the capping rod 905 to limit the top of the small slider 903. At the same time, the limited telescopic rod 906 is connected to the lifting handle 901 through the insertion rod 907, and the limited telescopic rod 906 drives the lifting handle 901 to rise and fall.

[0040] The working principle of this embodiment is as follows: when performing a kinetic energy experiment demonstration, the large slider 3 is placed on the guide rail 2 by hand, so that the large slider 3 is located between the limit slider 502 and the reset slider 505, and the reset slider 505 drives the limit slider 502 to move forward by connecting the slide rod 503, and the reset slider 505 moves to the left by connecting the slide rod 503 and the movable slide rail 504, so that the limit slider 502 and the reset slider 505 position the large slider 3, and the reset slider 505 drives the limit slider 502 to move backward by connecting the slide rod 503, and no longer limits the two sides of the large slider 3, and the magnet suction seat 6 10 The metal ball 604 is magnetically attracted through the ball seat plate 607, and the first operating rod 605 and the second operating rod 608 are synchronously adjusted in angle through the scale plate 4, so that the metal ball 604 is adjusted in angle through the rope 603, and the second operating rod 608 drives the magnet suction seat 610 to separate from the ball seat plate 607 through the second driving rod 609, so that the magnet suction seat 610 no longer magnetically attracts the metal ball 604, and the metal ball 604 falls through the rope 603, knocking the large slider 3 to move, and the moving distance of the large slider 3 is displayed by the scale of the guide rail 2, completing the demonstration of the kinetic energy experiment.

[0041] When performing the gravitational potential energy experiment demonstration, the positioning ring 804 is rotated by the rotating rod 802, and the positioning ring 804 and the transparent cylinder 7 are in the same vertical direction. The capping rod 905 is driven by hand through the limiting telescopic rod 906 to move through the mounting slide rail 904, so that the capping rod 905 caps the top of the transparent cylinder 7. At the same time, the insertion rod 907 of the limiting telescopic rod 906 is inserted into the lifting handle 901. The lifting handle 901 and the column 7 are driven to move upward through the extension and retraction of the limiting telescopic rod 906. The cylindrical spring 902 rises, and the cylindrical spring 902 drives the small slider 903 to rise to the highest point of the transparent cylinder 7. Similarly, the capping rod 905 is retracted, the lifting handle 901 and the cylindrical spring 902 are lowered, and the small slider 903 remains at the highest point of the transparent cylinder 7 due to friction. The gravity potential energy ball is placed inside the positioning ring 804, and the gravity potential energy ball falls to the top of the small slider 903 of the transparent cylinder 7. The falling height of the small slider 903 hit by the gravity potential energy ball is observed to complete the demonstration of the gravity potential energy experiment.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A mechanical energy demonstration board for high school physics, comprising a base (1), characterized in that: A guide rail (2) is fixedly mounted on one side of the top of the base (1), a large slider (3) is slidably connected to the top of the guide rail (2), a scale plate (4) is fixedly mounted on the other side of the top of the base (1), a reset mechanism (5) is arranged inside the guide rail (2), a kinetic energy demonstration mechanism (6) is arranged at the top of the guide rail (2), a transparent cylinder (7) is also fixedly mounted on the other side of the top of the base (1), a positioning mechanism (8) is arranged on one side of the scale plate (4), and a gravitational potential energy demonstration mechanism (9) is arranged inside the transparent cylinder (7) and on one side of the scale plate (4).

2. The mechanical energy demonstration board for high school physics according to claim 1, characterized in that: The reset mechanism (5) comprises a fixed slide rail (501) fixed to the top end of the guide rail (2); a limiting slide plate (502) is slidably mounted inside the fixed slide rail (501); a connecting slide bar (503) is fixedly connected to one side of the limiting slide plate (502); a movable slide rail (504) is slidably mounted inside the guide rail (2); a reset slide plate (505) is slidably mounted inside the movable slide rail (504); the interior of the reset slide plate (505) is slidably connected to the outer surface of the connecting slide bar (503).

3. The mechanical energy demonstration board for high school physics according to claim 1, characterized in that: The kinetic energy demonstration mechanism (6) comprises two support rods (601) fixed to the top of the guide rail (2), the other ends of the two support rods (601) are fixedly connected to a mounting plate (602), the interior of the mounting plate (602) is fixedly connected to a rope (603), and the other end of the rope (603) is fixedly connected to a metal ball (604).

4. The mechanical energy demonstration board for high school physics according to claim 3, characterized in that: A first operating rod (605) is rotatably mounted inside the mounting plate (602), a first driving rod (606) is fixedly connected to the outer surface of the first operating rod (605), and a ball seat plate (607) is fixedly connected to the other end of the first driving rod (606), and a groove of the ball seat plate (607) is fitted with the metal ball (604).

5. The mechanical energy demonstration board for high school physics according to claim 4, characterized in that: A second operating rod (608) is rotatably mounted on the outer surface of the first operating rod (605), a second driving rod (609) is fixedly connected to the outer surface of the second operating rod (608), and a magnetic suction seat (610) is fixedly connected to the other end of the second driving rod (609).

6. The mechanical energy demonstration board for high school physics according to claim 3, characterized in that: The positioning mechanism (8) comprises a fixing plate (801) fixed to one side of the scale plate (4); the other end of the fixing plate (801) is fixedly connected to the mounting plate (602); a rotating rod (802) is rotatably mounted inside the fixing plate (801); two limit plates (803) are fixedly connected to the top end of the fixing plate (801); and two positioning rings (804) are fixedly connected to the outer surface of the rotating rod (802).

7. The mechanical energy demonstration board for high school physics according to claim 6, characterized in that: A magnet sleeve (805) is fixedly connected to one side of the scale plate (4), and a lifting iron rod (806) is magnetically connected inside the magnet sleeve (805), and one end of the lifting iron rod (806) is rotatably connected to the outer surface of the rotating rod (802).

8. The mechanical energy demonstration board for high school physics according to claim 1, characterized in that: The gravitational potential energy demonstration mechanism (9) comprises a lifting handle (901) slidably mounted inside a scale plate (4), a cylindrical spring (902) being fixedly connected to the top of the lifting handle (901), and a small sliding block (903) being frictionally connected inside the transparent cylinder (7).

9. The mechanical energy demonstration board for high school physics according to claim 8, characterized in that: One side of the scale plate (4) is fixedly connected to a mounting rail (904), a capping rod (905) is slidably mounted inside the mounting rail (904), a limiting telescopic rod (906) is fixedly connected to the bottom of the capping rod (905), an outer surface of the telescopic end of the limiting telescopic rod (906) is slidably connected to the inside of the lifting handle (901), an insertion rod (907) is fixedly connected to one side of the telescopic end of the limiting telescopic rod (906), a plug hole is provided inside the lifting handle (901), and the outer surface of the plug rod (907) is engaged with the inside of the plug hole.

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