CN210443068U

CN210443068U - High school physics lever principle learning device

Info

Publication number: CN210443068U
Application number: CN201921080249.2U
Authority: CN
Inventors: 王毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-05-01
Anticipated expiration: 2029-07-11

Abstract

The utility model discloses a high school physics lever principle learning device, including bracing piece and crossbeam, the top of bracing piece is equipped with the support ring, the crossbeam is inserted and is established in the support ring, the crossbeam comprises two branch roof beams that rotate to connect, two the movable groove has all been seted up to the tip of branch roof beam, two the inside in movable groove all is equipped with the movable rod, two fixed lug are installed to the symmetry on the inside wall in movable groove, set up the fixed orifices of mutually supporting with fixed lug on the movable rod, every the bottom of movable rod all is connected with the lifting hook. The utility model discloses crossbeam to traditional lever principle presentation device has improved, makes it can be folded, can take in the bracing piece after the use in, conveniently carries, has practiced thrift the storage space, has improved the convenience when using, has set up neotype weight adjustment mechanism on the crossbeam, has improved the stability of demonstration process, and then has improved teaching efficiency.

Description

High school physics lever principle learning device

Technical Field

The utility model relates to a physical teaching technical field especially relates to a high school physics lever principle learning device.

Background

Physics is the subject of studying the most general laws of motion and basic structures of substances. As the leading subject of natural science, physical studies are as large as the universe and as small as the most basic motion forms and laws of all substances such as basic particles, and therefore, the method becomes the research foundation of other natural science subjects. The theoretical structure of the system fully uses mathematics as the working language of the system, and experiments are used as the only standard for checking the theoretical correctness, which is the most precise natural science subject at present.

The lever principle is a very common theory in physics, and is learned by students in middle school. When the lever principle is taught, verification teaching is generally carried out through a demonstration device so as to improve the understanding and acceptance degree of students. Present lever principle presentation device has certain inconvenience when using, adjusts the easy slip of back balance couple to the position of balance, causes the unstability of verification process, and simultaneously after the use, the crossbeam of overlength is difficult for accomodating, therefore portable not need make the improvement to this.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the lever principle learning device in the prior art is inconvenient to use and carry, and providing a high school physics lever principle learning device.

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

the utility model provides a high school physics lever principle learning device, includes bracing piece and crossbeam, the top of bracing piece is equipped with the support ring, the crossbeam is inserted and is established in the support ring, the crossbeam comprises two branch roof beams that rotate to connect, two the movable groove has all been seted up to the tip of branch roof beam, two the inside in movable groove all is equipped with the movable rod, two fixed convex block are installed to the symmetry on the inside wall in movable groove, set up the fixed orifices of mutually supporting with fixed convex block on the movable rod, every the bottom of movable rod all is connected with the lifting hook, the bottom of lifting hook is connected with the weight, the bottom of bracing piece is equipped with the base, set up the hole of accomodating of mutual intercommunication on bracing piece and the base, be equipped with the screw stopper on the opening of accomodating.

Preferably, a plurality of mounting holes are symmetrically formed in the inner side wall of the movable groove, each mounting hole is provided with a top spring, and a fixing lug is arranged at one end, close to the movable groove, of each top spring.

Preferably, one end of the fixing lug, which is far away from the top spring, is of a hemispherical structure.

Preferably, two be connected with the hinge jointly on the roof of the relative one end of branch roof beam, and all be equipped with the scale mark on two branch roof beams.

Preferably, the end faces of the two sub-beams are both semicircular in shape.

Preferably, two the bayonet socket of quarter circular form is all seted up on the diapire of the relative one end of branch roof beam, and bayonet socket and support ring mutually support, smooth disc is polished to the inside wall of support ring.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model improves the beam of the traditional lever principle demonstration device, so that the beam can be folded, and can be retracted into the support rod after use, thereby being convenient for carrying, saving the storage space and improving the convenience in use;

2. the novel weight adjusting mechanism is arranged on the cross beam, the weight can be reliably fixed after the position of the weight is adjusted, the weight can not slide easily, and meanwhile, the weight adjusting mechanism is also convenient and fast to move, so that the stability of the demonstration process is improved, and the teaching efficiency is improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a physical lever principle learning device in high school according to the present invention;

fig. 2 is a schematic structural view of a cross beam of the physical lever principle learning device for high school according to the present invention;

fig. 3 is a side view of a partial structure of a physical lever principle learning device for high school according to the present invention.

In the figure: the support rod 1, the support ring 2, the base 3, the receiving hole 4, the thread plug 5, the split beam 6, the bayonet 7, the hinge 8, the weight 9, the movable rod 10, the mounting hole 11, the fixing bump 12 and the lifting hook 13.

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", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 therefore, should not be construed as limiting the present invention.

Referring to fig. 1-3, a physical lever principle learning device for high school includes a support rod 1 and a cross beam, a support ring 2 is arranged on the top end of the support rod 1, the cross beam is inserted into the support ring 2, a quarter round bayonet 7 is arranged on the bottom wall of the opposite end of the two sub-beams 6, and the bayonet 7 is matched with the support ring 2, when the two sub-beams 6 are unfolded, the bayonet 7 forms a semicircle shape and is clamped on the support ring 2 to prevent the cross beam from shifting, the inner side wall of the support ring 2 is polished into a smooth round surface to reduce the friction between the support ring 2 and the cross beam and improve the accuracy of demonstration result, the cross beam is not obstructed during rotation, the cross beam is composed of two sub-beams 6 which are rotatably connected, the top wall of the opposite end of the two sub-beams 6 is commonly connected with a hinge 8, the two sub-beams 6 are connected by the hinge 8, make things convenient for accurate adjustment arm of force length, two terminal surface shapes that divide roof beam 6 are semi-circular, just in time form a cylinder when two divide roof beam 6 combinations together, convenient storage, the bottom of bracing piece 1 is equipped with base 3, sets up the hole 4 of accomodating of mutual intercommunication on bracing piece 1 and the base 3, is equipped with screw plug 5 on the opening of accomodating hole 4 bottom, seals the hole 4 of accomodating, prevents that inside object from dropping.

The movable groove has all been seted up to two tip of dividing roof beam 6, the inside of two movable grooves all is equipped with movable rod 10, two fixed lug 12 are installed to the symmetry on the inside wall of movable groove, set up the fixed orifices of mutually supporting with fixed lug 12 on the movable rod 10, a plurality of mounting holes 11 have been seted up to the symmetry on the inside wall of movable groove, all install a spring on the inside wall of every mounting hole 11, fixed lug 12 is all installed to the one end that every top spring is close to the movable groove, the one end that fixed lug 12 kept away from a spring is half spherical structure, the bottom of every movable rod 10 all is connected with lifting hook 13, lifting hook 13's bottom is connected with weight 9.

The utility model discloses a theory of operation does: when the teaching is performed to the lever principle, unscrew the screw stopper 5, take out two branch roof beams 6 that link together, expand it, take on support ring 2, fill in two branch roof beams 6 respectively from both sides with two movable rod 10 afterwards, because the tip of fixed lug 12 is the hemisphere, consequently movable rod 10 can crowd fixed lug 12 into mounting hole 11 in until fixed orifices and fixed lug 12 position coincidence, fixed lug 12 can bounce into the fixed orifices again, fix the position of movable rod 10, select required weight 9 to hang and verify on lifting hook 13 afterwards, after the use, take off movable rod 10, it is folding to divide roof beam 6 two, can receive in the hole 4.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The high school physics lever principle learning device comprises a supporting rod (1) and a cross beam, and is characterized in that a supporting ring (2) is arranged at the top end of the supporting rod (1), the cross beam is inserted into the supporting ring (2), the cross beam consists of two sub beams (6) which are rotatably connected, two movable grooves are formed in the end parts of the sub beams (6), two movable rods (10) are arranged in the movable grooves, two fixing convex blocks (12) are symmetrically arranged on the inner side wall of each movable groove, fixing holes which are matched with the fixing convex blocks (12) are formed in the movable rods (10), each movable rod (10) is connected with a lifting hook (13) at the bottom end, weights (9) are connected with the bottom end of each lifting hook (13), a base (3) is arranged at the bottom end of the supporting rod (1), and a storage hole (4) which is communicated with each other is formed in the supporting rod (1) and the base (3), the opening at the bottom end of the accommodating hole (4) is provided with a threaded plug (5).

2. The physical lever principle learning device for senior high schools according to claim 1, wherein a plurality of mounting holes (11) are symmetrically formed in the inner side wall of the movable groove, a top spring is mounted on the inner side wall of each mounting hole (11), and a fixing lug (12) is mounted at one end, close to the movable groove, of each top spring.

3. The physical lever principle learning device for senior high schools according to claim 2, wherein an end of the fixing projection (12) away from the top spring has a hemispherical structure.

4. The physical lever principle learning device for high schools according to claim 1, wherein the top walls of the opposite ends of the two sub-beams (6) are connected with hinge hinges (8) together, and the two sub-beams (6) are provided with scale marks.

5. The high school physics lever principle learning device according to claim 1, characterized in that the end surface shape of two said sub-beams (6) is semicircular.

6. The physical lever principle learning device for senior high schools according to claim 1, wherein the bottom walls of the opposite ends of the two branch beams (6) are respectively provided with a quarter-round bayonet (7), the bayonets (7) are matched with the support ring (2), and the inner side wall of the support ring (2) is polished into a smooth round surface.