CN210006309U

CN210006309U - Physical lever principle demonstration device

Info

Publication number: CN210006309U
Application number: CN201920209504.2U
Authority: CN
Inventors: 何姝颖
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-01-31
Anticipated expiration: 2029-02-19

Abstract

The utility model discloses a physics lever principle presentation device relates to lever technical field, this physics lever principle presentation device, demonstrate subassembly, second demonstration subassembly and supporting mechanism including , demonstrates subassembly and second demonstration subassembly swing joint on supporting mechanism, 0 demonstrates the subassembly including waiting arm lever, 1 measuring scale, 2 adjusting screw, 3 balance nut, 4 slide, lacing tape, pointer and through-hole, the surface of waiting arm lever is provided with the measuring scale, the equal fixedly connected with adjusting screw in both ends of waiting arm lever, the surface swing joint of adjusting screw has the balanced nut of , this physics lever principle presentation device can be with the same condition on waiting arm lever and the lever that lever arm and second are constituteed the same experiment, two contrast, and directly perceived convenience is got rid of the condition that probably influences the result for the result is more clear and definite.

Description

Physical lever principle demonstration device

Technical Field

The utility model relates to a lever technical field specifically is physics lever principle presentation device.

Background

Though the problems are solved in the degree of fixed distance by the conventional lever teaching device, because the two ends of the equal-arm lever arranged in the conventional lever principle demonstration device are equal in size, the students are not asked about the classmates in the demonstration process, a thick lever cannot save more labor than a thin lever, the suspended objects are different in shapes and gravity centers and cannot influence experimental results, and the conventional physical lever principle demonstration device is not too intuitive and is not beneficial to being used for pushing because other factors are not eliminated.

SUMMERY OF THE UTILITY MODEL

() problems to be solved

Not enough to prior art, the utility model provides a physics lever principle presentation device has solved current device that is used for physics lever principle demonstration, uses inconveniently, is unfavorable for pushing away the problem that used.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

physical leverage principle demonstration device, comprising th demonstration component, a second demonstration component and a supporting mechanism:

the th demonstration component and the second demonstration component are movably connected on the supporting mechanism;

the demonstration assembly comprises an equal-arm lever, a measuring scale, a 0 adjusting screw, a 1 balancing nut, a 2 sliding way, a 3 hanging strip, a 4 pointer and a 5 through hole, wherein the 6 th measuring scale is arranged on the outer surface of the equal-arm lever, 7 adjusting screw is fixedly connected to two ends of the equal-arm lever, a balancing nut is movably connected to the outer surface of the adjusting screw, the sliding way is formed in the equal-arm lever, a hanging strip is slidably connected to the interior of the sliding way, a pointer is fixedly connected to the interior of the hanging strip, and the through hole is formed in the center of the equal-arm lever;

the second demonstration assembly comprises an lever arm, a second measurement scale, a second adjusting screw and a second balance nut, a second slide way, a second hanging strip, a second pointer and a second through hole are arranged, a end of the lever arm is fixedly connected with the second lever arm, the outer surfaces of the lever arm and the second lever arm are respectively provided with the second measurement scale, a end of the lever arm far away from the second lever arm is fixedly connected with the second adjusting screw, a end of the second lever arm far away from the lever arm is fixedly connected with the second adjusting screw, the outer surface of the second adjusting screw is movably connected with the second balance nut, the second slide way is respectively arranged inside the lever arm and the second lever arm, the second hanging strip is slidably connected inside the second slide way, the second pointer is fixedly connected inside the second hanging strip, and a second through hole is arranged at the connection position of the first lever arm and the second lever arm;

the supporting mechanism comprises a base, an anti-slip mat, an th supporting column, a second supporting column, a th fixing block, a connecting column and a second fixing block, the bottom of the base is fixedly connected with the anti-slip mat, the top of the base is fixedly connected with an th supporting column and a second supporting column, the outer surfaces of the th supporting column and the second supporting column are fixedly connected with a th fixing block, the side of the th fixing block is fixedly connected with the connecting column, and the connecting column is far away from the end of the th fixing block and is fixedly connected with the second fixing block.

Optionally, a plurality of weights are respectively lapped on the bottoms of the th hanging strip and the second hanging strip, and the weights are different in shape and equal in weight.

Optionally, the th lever arm and the second lever arm have a weight equal to the weight of the equal arm lever.

Optionally, the th lever arm and the second lever arm are of equal length and equal weight, but the th lever arm has a width greater than the width of the second lever arm.

Optionally, the length of the th support column is greater than the length of the second support column.

Optionally, the adjustment screw's surface is seted up forward screw, and the balance nut's inner wall is seted up reverse screw, and forward screw and reverse screw thread are mutually supported.

(III) advantageous effects

The utility model provides a physics lever principle presentation device possesses following beneficial effect:

(1) this physics lever principle presentation device, through being provided with equal arm lever, lever arm and second lever arm, the surface of equal arm lever is provided with and measures the scale, the surface of lever arm and second lever arm all is provided with the second and measures the scale, in the use, make equal arm lever both sides balanced through rotatory balance nut, it makes the lever both sides balance that lever arm and second lever arm are constituteed to lead to rotatory second balance nut, can be experimental on equal arm lever, then same condition does same experiment on the lever that lever arm and second lever arm are constituteed, two contrast, it is directly perceived convenient.

(2) This physics lever principle presentation device, through having set up the weight of different shapes, the weight is hung on hanging strip and second hanging strip, just the shape of weight is different, and weight equals, hangs on the hanging strip, because the different so centrobaric of shape of weight is different, can be through changing the weight, confirms that lever principle and the weight of hanging the thing are relevant, and is highly irrelevant rather than it, gets rid of the condition that probably influences the result for the result is more clear and definite.

Drawings

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

fig. 2 is a side view of the support mechanism of the present invention;

fig. 3 is a schematic structural diagram of an demonstration component of the invention;

fig. 4 is a schematic structural diagram of a second demonstration assembly of the present invention;

fig. 5 is a side view of an demonstration assembly of the invention.

In the figure, 1- demonstration component, 2-second demonstration component, 3-supporting mechanism, 4-weight, 101-equiarm lever, 102- measurement scale, 103- 0 adjustment screw, 104- balance nut, 105- slideway, 106- hanging strip, 107- pointer, 108- through hole, 201- lever arm, 202-second lever arm, 203-second measurement scale, 204-second adjustment screw, 205-second balance nut, 206-second slideway, 207-second hanging strip, 208-second pointer, 209-second through hole, 301-base, 302-non-slip pad, 303- support column, 304-second support column, 305- fixed block, 306-connecting column, 307-second fixed block.

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, not all embodiments, of the present invention .

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "fixed," and the like shall be construed , for example, as being fixedly connected or detachably connected, mechanically connected, directly connected or indirectly connected through an intermediary.

Thus, a feature defined as "", "second" may explicitly or implicitly include or more of that feature.

Referring to fig. 1-5, the present invention provides a technical solution:

physical leverage demonstration apparatus comprising an th demonstration assembly 1, a second demonstration assembly 2 and a support mechanism 3:

the demonstration component 1 and the second demonstration component 2 are movably connected on the supporting mechanism 3;

the demonstration component 1 comprises an equal-arm lever 101, a measuring scale 102, a 0 adjusting screw 103, a 1 balance nut 104, a 2 slide 105, a 3 hanging strip 106, a 4 pointer 107 and a 5 through hole 108, the 6 measuring scale 102 is arranged on the outer surface of the equal-arm lever 101, both ends of the equal-arm lever 101 are fixedly connected with a 7 adjusting screw 103, the adjusting screw 103 is movably connected with a balance nut 104 on the outer surface, the slide 105 is arranged in the equal-arm lever 101, the hanging strip 106 is slidably connected in the slide 105, the pointer 107 is fixedly connected in the hanging strip 106, and the through hole 108 is arranged in the center of the equal-arm lever 101;

the second demonstration assembly 2 comprises a lever arm 201, a second lever arm 202, a second measurement scale 203, a second adjusting screw 204, a second balance nut 205, a second slide way 206, a second hanging strip 207, a second pointer 208 and a second through hole 209, the end of the lever arm 201 is fixedly connected with the second lever arm 202, the outer surfaces of the lever arm 201 and the second lever arm 202 are respectively provided with the second measurement scale 203, the end of the lever arm 201 far away from the second lever arm 202 is fixedly connected with the second adjusting screw 204, the end of the second lever arm 202 far away from the lever arm 201 is fixedly connected with the second adjusting screw 204, the outer surface of the second adjusting screw 204 is movably connected with the second balance nut 205, the second slide way 206 is respectively arranged inside the lever arm 201 and the second lever arm 202, the second hanging strip 207 is slidably connected inside the second slide way 206, the second pointer 208 is fixedly connected inside the second hanging strip 207, and the second through hole 209 is arranged at the connection position of the lever arm 201 and the second lever arm 202;

supporting mechanism 3 includes base 301, slipmat 302, support column 303, second support column 304, fixed block 305, spliced pole 306 and second fixed block 307, the bottom fixedly connected with slipmat 302 of base 301, base 301 top fixedly connected with support column 303 and second support column 304, the equal fixedly connected with of surface of support column 303 and second support column 304 has fixed block 305, the side fixedly connected with spliced pole 306 of fixed block 305, end fixedly connected with second fixed block 307 that fixed block 305 was kept away from to spliced pole 306.

As the utility model discloses an optional technical scheme:

a plurality of weights 4 are respectively lapped at the bottoms of the th hanging strip 106 and the second hanging strip 207, and the weights 4 are different in shape and equal in weight.

As the utility model discloses an optional technical scheme:

lever arm 201 and second lever arm 202 weigh the same amount as equal arm lever 101.

As the utility model discloses an optional technical scheme:

the th lever arm 201 is of equal length and weight to the second lever arm 202, but the th lever arm 201 is wider than the second lever arm 202.

As the utility model discloses an optional technical scheme:

the length of the th support post 303 is greater than the length of the second support post 304.

As the utility model discloses an optional technical scheme:

the outer surface of adjusting screw 103 is seted up forward screw thread, and the inner wall of balanced nut 104 is seted up reverse screw thread, and forward screw thread and reverse screw thread looks adaptation.

In summary, when the physical lever principle demonstration device is used, the equiarm lever 101, the -th lever arm 201 and the second lever arm 202 are arranged, the -th measurement scale 102 is arranged on the outer surface of the equiarm lever 101, the second measurement scale 203 is arranged on the outer surfaces of the -th lever arm 201 and the second lever arm 202, the equiarm lever 101 is balanced on two sides by rotating the -th balance nut 104, the lever formed by the -th lever arm 201 and the second lever arm 202 is balanced on two sides by rotating the second balance nut 205, experiments can be carried out on the equiarm lever 1, then the same experiment is carried out on the lever formed by the -th lever arm 201 and the second lever arm 202 under the same condition, the two experiments are compared, the effects are intuitive and convenient, the weights 4 with different shapes are hung on the -th hanging strip 106 and the second hanging strip 207 through the arrangement of the weights 4 with different shapes, the weights with different shapes are hung on the weights with different shapes, the weights can be determined, the weight principle of the hung objects is related to the hung on the hanging strip, and the height influence of the hanging result is possibly unrelated to the influence of the height.

It should be noted that in the present disclosure, unless otherwise expressly specified or limited, the th feature may be "on" or "under" the second feature such that the th and second features are in direct contact, or the th and second features are in indirect contact through intervening media, further, the th feature may be "on," "above," and "above" the second feature, but the th feature may be directly above or obliquely above the second feature, or merely indicate that the th feature is at a higher level than the second feature, the th feature may be "under," "below," and "under" the second feature such that the th feature is directly below or obliquely below the second feature, or merely indicate that the th feature is at a lower level than the second feature.

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. Physical lever principle presentation device, including demonstration subassembly (1), second demonstration subassembly (2) and supporting mechanism (3), its characterized in that:

the th demonstration component (1) and the second demonstration component (2) are movably connected on the supporting mechanism (3);

the demonstration assembly (1) comprises an equal-arm lever (101), a -th measuring scale (102), a 0-th adjusting screw (103), a 1-th balancing nut (104), a 2-th slideway (105), a 3-th hanging strip (106), a 4-th pointer (107) and a 5-th through hole (108), wherein the 6-th measuring scale (102) is arranged on the outer surface of the equal-arm lever (101), both ends of the equal-arm lever (101) are fixedly connected with 7-th adjusting screws (103), the -th balancing nut (104) is movably connected to the outer surface of the -th adjusting screw (103), the -th slideway (105) is formed in the equal-arm lever (101), the -th hanging strip (106) is slidably connected to the -th slideway (105), the -th pointer (107) is fixedly connected to the -th hanging strip (106), and the -th through hole (108) is formed in the center of the equal-arm lever (101);

the second demonstration assembly (2) comprises a -th lever arm (201), a second lever arm (202), a second measurement scale (203), a second adjusting screw (204), a second balance nut (205), a second slide way (206), a second hanging strip (207), a second pointer (208) and a second through hole (209), wherein the -th end of the -th lever arm (201) is fixedly connected with the second lever arm (202), the outer surfaces of the -th lever arm (201) and the second lever arm (202) are respectively provided with the second measurement scale (203), the end of the -th lever arm (201), which is far away from the second lever arm (202), is fixedly connected with the second adjusting screw (204), the 3556565630-th end of the second lever arm (202) is fixedly connected with the second adjusting screw (204), the outer surface of the second adjusting screw (204) is movably connected with the second balance nut (205), the insides of the -th lever arm (201) and the second lever arm (202) are respectively provided with the second adjusting screw (206), the inside of the second lever arm (206) is fixedly connected with the second slide way (208), and the second hanging strip (207) is connected with the second through hole (209), and the second through hole (207) is connected with the second through hole (209);

supporting mechanism (3) include base (301), slipmat (302), support column (303), second support column (304), fixed block (305), spliced pole (306) and second fixed block (307), the bottom fixedly connected with slipmat (302) of base (301), base (301) top fixedly connected with support column (303) and second support column (304), the equal fixedly connected with fixed block (305) of surface of support column (303) and second support column (304), the side fixedly connected with spliced pole (306) of fixed block (305), fixedly connected with second fixed block (307) of fixed block (305) are kept away from in spliced pole (306).

2. The physical leverage principle demonstration apparatus of claim 1 wherein,

the bottom of the th hanging strip (106) and the bottom of the second hanging strip (207) are respectively provided with a plurality of weights (4), and the weights (4) have different shapes and equal weights.

3. The physical leverage principle demonstration apparatus of claim 1 wherein,

the th lever arm (201) and the second lever arm (202) have the same weight as the equal-arm lever (101).

4. The physical leverage principle demonstration apparatus of claim 1 wherein,

the th lever arm (201) and the second lever arm (202) are equal in length and weight, but the th lever arm (201) has a width greater than the width of the second lever arm (202).

5. The physical leverage principle demonstration apparatus of claim 1 wherein,

the length of the th support column (303) is greater than the length of the second support column (304).

6. The physical leverage principle demonstration apparatus of claim 1 wherein,

the outer surface of the th adjusting screw (103) is provided with a forward thread, the inner wall of the th balance nut (104) is provided with a reverse thread, and the forward thread is matched with the reverse thread.