CN210574543U - Physics lever teaching aid - Google Patents

Abstract

The utility model relates to a physics lever teaching aid belongs to teaching education technical field, including horizontal base, support, balancing pole, dynamometer and slide mechanism, support and slide mechanism are installed to horizontal base top, and the installation is established with the balancing pole on the top of support, and the balancing pole passes through dynamometer and slide mechanism and establishes to be connected. The utility model discloses a simple structure, convenient to use have reduced the fund that the school purchased experimental facilities, and audio-visual teaching mode can arouse student's interest in learning moreover, deepen the student to understanding, consolidating memory, the promotion thinking of this knowledge point.

Description

Physics lever teaching aid

Technical Field

The utility model relates to a teaching aid technical field especially relates to a physics lever teaching aid.

Background

The physical experiment is an intuitive teaching activity carried out for strengthening the content of the physical textbook, and not only can help students to better understand the textbook knowledge, but also can exercise the manual operation ability of the students. The synthesis of force and the lever law are physical phenomena existing in nature, and due to the abstract characteristics, students have difficulty in understanding, so that the students can better integrate the law concept of physics by establishing an entity concept for the synthesis of force and the existence of the lever law by means of a physical experiment method and personally experience the existence of the physical phenomenon by manually experiments.

The lever principle is one of important principles in physics, and in physical teaching, the demonstration of the lever principle can enable students to understand the lever theorem more vividly. When a teacher explains the lever principle for students, the teacher generally understands the lever principle by drawing, does not demonstrate an actual teaching aid to watch the student, or simulates by using a simple tool, so that the teacher cannot accurately load the quality at two ends of the lever, cannot accurately position the position of a fulcrum, can only simulate the lever principle by experience and hand feeling, has the defects that some learning physiology is not thoroughly solved, the learned knowledge is not solid, and the understanding and mastering of the physical knowledge after the learning are seriously influenced. Therefore, there is a need for a physical lever teaching aid, which can express the lever principle with the physical image when the teacher gives lessons, and also make the student's memory deep and improve the teaching efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a physics lever teaching aid, when simple structure, lever principle teaching aid that the teaching effect is good.

The utility model adopts the technical scheme that:

the utility model provides a physics lever teaching aid, includes horizontal base, support, balancing pole, dynamometer and slide mechanism, installs support and slide mechanism above the horizontal base, and the installation is established with the balancing pole to the top of support, and the balancing pole passes through dynamometer and slide mechanism and establishes being connected.

Further, the support comprises a support rod, a connecting lug and indicating lines, the support rod and the connecting lug are fixedly installed, a first round hole is processed on the connecting lug, and the indicating lines are arranged on two sides of the first round hole; the first pin rod passes through the first round hole and is connected with the balance rod.

Furthermore, a plurality of through holes are equidistantly processed on the balance bar, and horizontal lines are arranged among the through holes; the connecting lug is matched and installed with the balance rod through a first pin rod; the two ends of the balance rod are respectively connected with the force measuring mechanism.

Further, the force measuring mechanism comprises a lifting lug, a force gauge and a tension mechanism, a second round hole is processed on the lifting lug, and a connector is installed below the lifting lug; the second round hole on the lifting lug is matched and installed with the through hole on the balancing rod through a second pin rod; the connector is connected with one end of the dynamometer through the tension mechanism, and the other end of the dynamometer is connected with the sliding mechanism.

Further, slide mechanism includes vertical slide and horizontal slide, vertical slide and horizontal slide slidable mounting, installs the sliding block on the horizontal slide, installs angle measuring instrument and pivot on the sliding block with one heart, and the other end and the pivot of dynamometer are connected.

Further, still processing has the fixed orifices on the sliding block, processing have on the fixed orifices with screw rod complex internal thread, the sliding block passes through the screw rod and realizes pressing from both sides tightly with the horizontal slide.

Further, the vertical slide way is clamped and fixed with the horizontal slide way through a bolt.

Further, the sliding mechanism is provided with two groups, the number of each group of vertical slideways is two, and the number of the horizontal slideways is one.

Furthermore, the vertical slide is of a concave structure, one side of the horizontal slide is provided with a bulge matched with the concave structure of the vertical slide, and the other side of the horizontal slide is also provided with a concave structure.

The utility model discloses following beneficial effect has to prior art:

1. the utility model has simple structure and convenient use, reduces the fund for purchasing experimental equipment in schools, and the intuitive teaching mode can arouse the learning interest of students, deepen the understanding of the students to the knowledge points, consolidate the memory and promote the thinking;

2. the bracket, the balance rod and the force measuring mechanism of the utility model are connected by adopting a detachable structure mode, so that the assembly is convenient when in use, and the space is saved when not in use;

3. the two ends of the balance rod of the utility model are rotatably connected with the lifting lugs, the connector below the lifting lugs is connected with the dynamometer, the other end of the dynamometer is connected with the rotating shaft on the sliding block, and the included angle between the dynamometer and the balance rod is adjusted by adjusting the position of the sliding block, so that students can more visually understand the relationship between forces in different directions and forces;

4. the utility model discloses be provided with two sets of slides, the size of vertical slide adjustable power, and the angle of the adjustable power of horizontally slide.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of region D;

FIG. 3 is a cross-sectional view of the slider;

figure 4 is a schematic view of a lifting lug;

FIG. 5 is a schematic view of a coupling lug;

3 FIG. 3 6 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3; 3

FIG. 7 is a sectional view taken along line B-B;

FIG. 8 is a sectional view taken along line C-C;

in the figure, 1-a horizontal base, 2-a support rod, 2-a connecting lug, 2-a 3-a first round hole, 2-a 4-an indicator line, 2-a 5-a first pin rod, 3-a balance rod, 3-a 1-a through hole, 3-a 2-a horizontal line, a 4-a force measuring mechanism, a 4-a 1-a lifting lug, a 4-a 1-a second round hole, a 4-a 1-a 2-a connector, a 4-a 2-a force measuring machine, a 4-a 3-a force measuring mechanism, a 4-a second pin rod, a 5-a sliding mechanism, a 5-a 1-a vertical slideway, a 5-a 2-a horizontal slideway, a 5-a 2-a 1-bulge and a, 5-3-1-angle measuring instrument, 5-3-2-rotating shaft, 5-3-3-fixing hole and 5-3-4-screw rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The first implementation mode comprises the following steps: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; so set up, through being provided with support and slide mechanism on horizontal base, guaranteed that the level of whole lever teaching aid is placed, slide mechanism's setting has realized the adjustment of the size of power and direction simultaneously, installs the dynamometer moreover, can the direct measurement size of exerting oneself.

The second embodiment: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; the support 2 comprises a support rod 2-1, a connecting lug 2-2 and an indicating line 2-4, the support rod 2-1 and the connecting lug 2-2 are fixedly installed, a first round hole 2-3 is processed on the connecting lug 2-2, the indicating line 2-4 is arranged on two sides of the first round hole 2-3, and a first pin rod 2-5 penetrates through the first round hole 2-3 to be connected with the balance rod 3; so set up, the top and the balancing pole of support are detachable mounting means, not only can adjust the position of installation, can dismantle moreover when not using and place, save space, and the instruction line is used for proofreading whether the place of balancing pole is horizontal.

The third embodiment is as follows: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; the support 2 comprises a support rod 2-1, a connecting lug 2-2 and an indicating line 2-4, the support rod 2-1 and the connecting lug 2-2 are fixedly installed, a first round hole 2-3 is processed on the connecting lug 2-2, the indicating line 2-4 is arranged on two sides of the first round hole 2-3, and a first pin rod 2-5 penetrates through the first round hole 2-3 to be connected with the balance rod 3; a plurality of through holes 3-1 are equidistantly machined in the balancing rod 3, and horizontal lines 3-2 are arranged among the through holes; the connecting lug 2-2 is matched with the balance rod 3 through a first pin rod 2-5, and two ends of the balance rod 3 are respectively connected with the force measuring mechanism 4; so set up, be provided with the water flat line on the balancing pole, when experimental, when the indicateing line was located same water flat line with the water flat line, ensured that the level of balancing pole was placed, the size of the both ends power of balancing pole is also equal simultaneously.

The fourth embodiment: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; the support 2 comprises a support rod 2-1, a connecting lug 2-2 and an indicating line 2-4, the support rod 2-1 and the connecting lug 2-2 are fixedly installed, a first round hole 2-3 is processed on the connecting lug 2-2, the indicating line 2-4 is arranged on two sides of the first round hole 2-3, and a first pin rod 2-5 penetrates through the first round hole 2-3 to be connected with the balance rod 3; a plurality of through holes 3-1 are equidistantly machined in the balancing rod 3, and horizontal lines 3-2 are arranged among the through holes; the connecting lug 2-2 is matched with the balance rod 3 through a first pin rod 2-5, and two ends of the balance rod 3 are respectively connected with the force measuring mechanism 4; the force measuring mechanism 4 comprises a lifting lug 4-1, a force gauge 4-2 and a tension mechanism 4-3, a second round hole 4-1-1 is processed on the lifting lug 4-1, a connector 4-1-2 is installed below the lifting lug 4-1, the second round hole 4-1-1 on the lifting lug 4-1 is matched and installed with a through hole 3-1 on the balance rod 3 through a second pin rod 4-4, the connector 4-1-2 is connected with one end of the force gauge 4-2 through the tension mechanism 4-3, and the other end of the force gauge 4-2 is connected with the sliding mechanism 5; according to the arrangement, the lifting lug and the balance rod are rotatably arranged, and when the included angle between the dynamometer and the balance rod is an acute angle or an obtuse angle, the tension mechanism drives the lifting lug to adjust the angle so as to realize force measurement; further optimized, the tension mechanism can be a rope or a plastic rod, and can be replaced by light inelastic materials.

The fifth embodiment: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; the support 2 comprises a support rod 2-1, a connecting lug 2-2 and an indicating line 2-4, the support rod 2-1 and the connecting lug 2-2 are fixedly installed, a first round hole 2-3 is processed on the connecting lug 2-2, the indicating line 2-4 is arranged on two sides of the first round hole 2-3, and a first pin rod 2-5 penetrates through the first round hole 2-3 to be connected with the balance rod 3; a plurality of through holes 3-1 are equidistantly machined in the balancing rod 3, and horizontal lines 3-2 are arranged among the through holes; the connecting lug 2-2 is matched with the balance rod 3 through a first pin rod 2-5, and two ends of the balance rod 3 are respectively connected with the force measuring mechanism 4; the force measuring mechanism 4 comprises a lifting lug 4-1, a force gauge 4-2 and a tension mechanism 4-3, a second round hole 4-1-1 is processed on the lifting lug 4-1, a connector 4-1-2 is installed below the lifting lug 4-1, the second round hole 4-1-1 on the lifting lug 4-1 is matched and installed with a through hole 3-1 on the balance rod 3 through a second pin rod 4-4, the connector 4-1-2 is connected with one end of the force gauge 4-2 through the tension mechanism 4-3, and the other end of the force gauge 4-2 is connected with the sliding mechanism 5; the sliding mechanism 5 comprises a vertical slideway 5-1 and a horizontal slideway 5-2, the vertical slideway 5-1 and the horizontal slideway 5-2 are installed in a sliding mode, a sliding block 5-3 is installed on the horizontal slideway 5-2, an angle measuring instrument 5-3-1 and a rotating shaft 5-3-2 are concentrically installed on the sliding block 5-3, and the other end of a dynamometer 4-2 is connected with the rotating shaft 5-3-2; so set up, slide mechanism comprises vertical slide and horizontal slide, when horizontal slide reciprocated at vertical slide, makes the dynamometer measure certain numerical value, moves about on horizontal slide through the sliding block, makes the normal force confirm, still installs angle measurement appearance on the sliding block simultaneously, can audio-visually know the contained angle between tension mechanism and the balancing pole.

Further optimization, a fixing hole 5-3-3 is further processed on the sliding block 5-3, an internal thread matched with the screw rod 5-3-4 is processed on the fixing hole 5-3-3, and the sliding block 5-3 is clamped with the horizontal slide way 5-2 through the screw rod 5-3-4; by the arrangement, when the position of the sliding block is determined, the sliding block is fixed relative to the horizontal slide way through the matching of the screw rod and the threads in the fixing hole; furthermore, the vertical slide ways 5-1 are clamped and fixed with the horizontal slide ways 5-2 through bolts 5-4, two groups of sliding mechanisms 5 are arranged, the number of each group of vertical slide ways 5-1 is two, and the number of the horizontal slide ways 5-2 is one; according to the arrangement, when the sliding distance of the horizontal slide way relative to the vertical slide way is determined, the horizontal slide way is screwed and fixed through the bolt, and no variable is generated in the test process; the two groups of sliding mechanisms are arranged, so that students can more intuitively know the principle of the lever and the relation between force and force change through different changes of the two ends of the balancing rod, and the two vertical sliding ways are arranged to enable the horizontal sliding way to be more stable in moving and the whole structure to be more stable.

Embodiment six: a physical lever teaching aid comprises a horizontal base 1, a support 2, a balance rod 3, a force measuring mechanism 4 and a sliding mechanism 5, wherein the support 2 and the sliding mechanism 5 are installed above the horizontal base 1, the top end of the support 2 is installed with the balance rod 3, and the balance rod 3 is connected with the sliding mechanism 5 through the force measuring mechanism 4; the support 2 comprises a support rod 2-1, a connecting lug 2-2 and an indicating line 2-4, the support rod 2-1 and the connecting lug 2-2 are fixedly installed, a first round hole 2-3 is processed on the connecting lug 2-2, the indicating line 2-4 is arranged on two sides of the first round hole 2-3, and a first pin rod 2-5 penetrates through the first round hole 2-3 to be connected with the balance rod 3; a plurality of through holes 3-1 are equidistantly machined in the balancing rod 3, and horizontal lines 3-2 are arranged among the through holes; the connecting lug 2-2 is matched with the balance rod 3 through a first pin rod 2-5, and two ends of the balance rod 3 are respectively connected with the force measuring mechanism 4; the force measuring mechanism 4 comprises a lifting lug 4-1, a force gauge 4-2 and a tension mechanism 4-3, a second round hole 4-1-1 is processed on the lifting lug 4-1, a connector 4-1-2 is installed below the lifting lug 4-1, the second round hole 4-1-1 on the lifting lug 4-1 is matched and installed with a through hole 3-1 on the balance rod 3 through a second pin rod 4-4, the connector 4-1-2 is connected with one end of the force gauge 4-2 through the tension mechanism 4-3, and the other end of the force gauge 4-2 is connected with the sliding mechanism 5; the sliding mechanism 5 comprises a vertical slideway 5-1 and a horizontal slideway 5-2, the vertical slideway 5-1 and the horizontal slideway 5-2 are installed in a sliding mode, a sliding block 5-3 is installed on the horizontal slideway 5-2, an angle measuring instrument 5-3-1 and a rotating shaft 5-3-2 are concentrically installed on the sliding block 5-3, and the other end of a dynamometer 4-2 is connected with the rotating shaft 5-3-2; the vertical slideway 5-1 is of a concave structure, one side of the horizontal slideway 5-2 is provided with a bulge 5-2-1 which is matched with the vertical slideway 5-1 in a concave shape, and the other side of the horizontal slideway 5-2 is also provided with a concave structure; so set up, vertical slide and horizontal slide make the slide more smooth and easy at gliding in-process through concave and convex cooperation mode, can not deviate the motion trails of slide moreover.

At first to balancing pole one side application of force, through adjusting the position of horizontal smooth way on vertical slide, it has certain numerical value to be the dynamometer, it is fixed with horizontal slide and vertical slide, on next step through adjusting the position of sliding block on horizontal slide, it has certain angle to be tensile mechanism and balancing pole, can learn through the angle measurement appearance, at this moment, the position of the slide of adjustment balancing pole opposite side and the position of sliding block, when the pilot line on the engaging lug is the same level with the horizontal line on the balancing pole, the size of both sides power equals, the relation of contrast power that can be direct and power.

This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can also make modifications to its layout without departing from the spirit of the patent.

Claims (9)

1. A physical lever teaching aid comprising: horizontal base (1), support (2), balancing pole (3), dynamometer (4) and sliding mechanism (5), its characterized in that, support (2) and sliding mechanism (5) are installed to horizontal base (1) top, the installation is established with balancing pole (3) on the top of support (2), balancing pole (3) are passed through dynamometer (4) and are established with sliding mechanism (5) and be connected.

2. The physical lever teaching aid as claimed in claim 1, wherein the support (2) comprises a support rod (2-1), a connecting lug (2-2) and an indicating line (2-4), the support rod (2-1) is fixedly mounted with the connecting lug (2-2), a first round hole (2-3) is processed on the connecting lug (2-2), and the indicating line (2-4) is arranged on two sides of the first round hole (2-3); the first pin rod (2-5) penetrates through the first round hole (2-3) to be connected with the balance rod (3).

3. A physical lever teaching aid according to claim 2, characterized in that a plurality of through holes (3-1) are equidistantly machined in the balance bar (3), and horizontal lines (3-2) are arranged between the through holes;

the connecting lug (2-2) is matched and installed with the balance rod (3) through a first pin rod (2-5);

and two ends of the balance rod (3) are respectively connected with the force measuring mechanism (4).

4. The physical lever teaching aid as claimed in claim 3, wherein the force measuring mechanism (4) comprises a lifting lug (4-1), a force gauge (4-2) and a tension mechanism (4-3), a second round hole (4-1-1) is processed on the lifting lug (4-1), and a connector (4-1-2) is installed below the lifting lug (4-1);

a second round hole (4-1-1) on the lifting lug (4-1) is matched and installed with a through hole (3-1) on the balance bar (3) through a second pin rod (4-4);

the connector (4-1-2) is connected with one end of the dynamometer (4-2) through a tension mechanism (4-3), and the other end of the dynamometer (4-2) is connected with the sliding mechanism (5).

5. A physics lever teaching aid according to claim 4, characterized in that slide mechanism (5) includes vertical slide (5-1) and horizontal slide (5-2), vertical slide (5-1) with horizontal slide (5-2) slidable mounting, install sliding block (5-3) on horizontal slide (5-2), install angle measuring instrument (5-3-1) and pivot (5-3-2) with one heart on sliding block (5-3), the other end of dynamometer (4-2) with pivot (5-3-2) are connected.

6. A physics lever teaching aid according to claim 5, characterized in that the sliding block (5-3) is also provided with a fixing hole (5-3-3), the fixing hole (5-3-3) is provided with an internal thread which is matched with the screw rod (5-3-4), and the sliding block (5-3) is clamped with the horizontal slideway (5-2) through the screw rod (5-3-4).

7. A physics lever teaching aid according to claim 5, characterized in that the vertical slideway (5-1) is clamped and fixed with the horizontal slideway (5-2) by bolts (5-4).

8. A physics lever teaching aid according to claim 5, characterized in that the sliding mechanism (5) is provided in two groups, the number of vertical slideways (5-1) in each group being two, and the number of horizontal slideways (5-2) being one.

9. A physics lever teaching aid according to claim 5, characterized in that the vertical slide (5-1) is a "concave" structure, one side of the horizontal slide (5-2) is provided with a protrusion (5-2-1) which is matched with the vertical slide (5-1) in a concave shape, and the other side of the horizontal slide (5-2) is also provided with a "concave" structure.

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