CN213987973U

CN213987973U - Demonstration device for physics experiments

Info

Publication number: CN213987973U
Application number: CN202120202519.3U
Authority: CN
Inventors: 李自华; 穆志勇
Original assignee: Dianxi Science And Technology Normal University
Current assignee: Dianxi Science And Technology Normal University
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-08-17
Anticipated expiration: 2031-01-26

Abstract

The utility model relates to the technical field of physical experiment tools, more specifically, a demonstration device for physical experiments, including base and mount pad, a plurality of electric telescopic links are connected symmetrically between base and the mount pad, be equipped with mechanics demonstration mechanism between base and the mount pad, mechanics demonstration mechanism includes gravity piece, two first sliders of symmetrical slidable mounting on the mount pad and second slider of slidable mounting on first slider, the second slider is connected with first slider through the elastic component, the second slider is articulated with gravity piece through the connecting rod, and symmetrical rotation installs two threaded rods in the mount pad, the threaded rod runs through first slider and screw-thread fit between the two; the utility model discloses not only present the relation of component size and angle in the physics mechanics experiment, the experimental result visibility of whole device is high moreover, is convenient for observe.

Description

Demonstration device for physics experiments

Technical Field

The utility model relates to a physics experiments apparatus technical field, the more specifically say, is a presentation device for physics experiments.

Background

Physics is the science of an experiment, and the physics can not be developed and the quality of physics teaching can not be improved when the physics experiment is separated. The traditional teaching concept is the light practice of the important theory, a teacher only pays attention to the infusion of theoretical knowledge in a classroom, the cultivation of the practice ability of students is neglected, the students only remember some scientific knowledge, problems are solved by using the book theory, the experiment consciousness is very weak, and the practical ability is very poor.

The relation between the component force and the force application angle is always the key point in high school physical experiments, but the existing component force experimental instrument is simple in structure and low in visibility, and students cannot directly observe the relation between the component force and the force application angle through the instrument.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a presentation device for physics experiments to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a demonstration device for physical experiments comprises a base and a mounting seat, wherein a plurality of electric telescopic rods are symmetrically connected between the base and the mounting seat, a mechanics demonstration mechanism is arranged between the base and the mounting seat, the mechanics demonstration mechanism comprises a gravity block, two first sliding blocks symmetrically and slidably mounted on the mounting seat and a second sliding block slidably mounted on the first sliding blocks, the second sliding block is connected with the first sliding block through an elastic piece, the second sliding block is hinged with the gravity block through a connecting rod, two threaded rods are symmetrically and rotatably arranged in the mounting seat, the threaded rods penetrate through the first sliding block and are in threaded fit with the first sliding block, one end of each threaded rod is fixedly provided with an operating disk, and the base is fixedly provided with an object placing block matched with the gravity block, one end of the gravity block is slidably inserted into the object placing block, and the mechanical demonstration mechanism further comprises an observation unit.

Further: the elastic piece is a spring.

Further: the observation unit includes test tube, fixed mounting number plate and the piston of slidable mounting in the test tube of fixed mounting on first slider on one side of the test tube, elastic connection between the one end of piston and the test tube, and be connected through being connected the rope between piston and the second slider, the regional packing of upside that is located the piston in the test tube has coloured solution.

Further: and a stabilizing mechanism is arranged on the base.

And further: firm mechanism includes a plurality of symmetry fixed mounting sucking discs and a plurality of inflator on the base, inflator fixed mounting is at electric telescopic handle's stiff end, the drive end of inflator and electric telescopic handle's output fixed connection, the inflator passes through connecting pipe and sucking disc intercommunication.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

1. the utility model is provided with a gravity block, a first slider, a second slider, a threaded rod, an operation panel, a connecting rod, a number indicating plate, a test tube, a spring, a piston and a colored solution, the gravity block is driven to be separated from a material placing block and to be in a suspended state by electrifying the electric telescopic rod, the operation panels on two sides of the installation seat are randomly rotated to drive the threaded rod to rotate, so that the first slider moves relative to the installation seat, the angle between the connecting rod and the gravity block is changed, further, under the action of gravity of the gravity block, the second sliders on two sides move downwards relative to the first slider by a corresponding distance according to the angle between the connecting rod and the gravity block, the corresponding piston is driven to move downwards by a connecting rope, the liquid level of the colored solution is aligned with different positions of the number indicating plate, the relation between the component force size and the angle in a physical mechanics experiment is presented, and the visibility of the experiment result of the whole device is high, is convenient for observation.

2. The utility model discloses a set up electric telescopic handle, inflator and sucking disc, when electric telescopic handle circular telegram extension carried out the physics experiment, the relative base of drive end that drives the inflator moved up, and then takes the air between sucking disc and the laboratory bench out through the inflator for whole device can stably place on the laboratory bench, prevents that the experiment process manual operation from causing the device to empty and collide with, causes the precision of instrument to change.

Drawings

FIG. 1 is a schematic structural diagram of a demonstration device for physical experiments;

FIG. 2 is an enlarged partial structure diagram of a demonstration device for physical experiments at A;

fig. 3 is an assembly view of a first slide block and a second slide block in a demonstration apparatus for physical experiments.

The reference numerals in the schematic drawings illustrate:

1-base, 2-mounting base, 3-object placing block, 4-gravity block, 5-first slide block, 6-second slide block, 7-threaded rod, 8-operation plate, 9-connecting rod, 10-index plate, 11-test tube, 12-spring, 13-piston, 14-colored solution, 15-electric telescopic rod, 16-air cylinder and 17-suction cup.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention, and the following embodiments are combined to further describe the present invention.

Referring to fig. 1-3, in the embodiment of the present invention, a demonstration apparatus for physical experiments comprises a base 1 and a mounting base 2, a plurality of electric telescopic rods 15 are symmetrically connected between the base 1 and the mounting base 2, a mechanics demonstration mechanism is arranged between the base 1 and the mounting base 2, the mechanics demonstration mechanism comprises a gravity block 4, two first sliders 5 symmetrically slidably mounted on the mounting base 2, and a second slider 6 slidably mounted on the first slider 5, the second slider 6 is connected with the first slider 5 through an elastic member, the elastic member is a spring 12, the second slider 6 is hinged with the gravity block 4 through a connecting rod 9, two threaded rods 7 are symmetrically rotatably mounted in the mounting base 2, the threaded rods 7 penetrate through the first slider 5 and are in threaded fit with each other, an operation panel 8 is fixedly mounted at one end of the threaded rods 7, the base 1 is fixedly provided with an object placing block 3 matched with the gravity block 4, one end of the gravity block 4 is slidably inserted into the object placing block 3, and the mechanics demonstration mechanism further comprises an observation unit;

the observation unit includes test tube 11, fixed mounting on first slider 5 and the piston 13 of indicating number board 10 and slidable mounting in test tube 11 of fixed mounting on test tube 11 one side, elastic connection between one end of piston 13 and the test tube 11, and be connected through being connected the rope between piston 13 and the second slider 6, the regional coloured solution 14 that fills of upside that is located piston 13 in the test tube 11.

In practical application, through the work of electric telescopic handle 15 circular telegram, drive gravity piece 4 and break away from and put thing piece 3 and be in unsettled state, through rotating the operation panel 8 of mount pad 2 both sides wantonly, drive threaded rod 7 rotates, make first slider 5 remove relative mount pad 2, the angle between connecting rod 9 and the gravity piece 4 changes, and then under the effect of gravity piece 4 gravity, make the second slider 6 of both sides shift down corresponding distance according to the angle between connecting rod 9 and the gravity piece 4 relative first slider 5, drive corresponding piston 13 through connecting the rope and shift down, make the liquid level of coloured solution 14 and the different positions parallel and level of tablet 10, not only the relation of component size and angle in the physics mechanics experiment has been presented, and the experimental result visibility of whole device is high, be convenient for observe.

Further, please refer to fig. 1, as a preferred embodiment of the present invention, a fixing mechanism is disposed on the base 1, the fixing mechanism includes a plurality of suction cups 17 symmetrically and fixedly mounted on the base 1 and a plurality of air cylinders 16, the air cylinders 16 are fixedly mounted at the fixed end of the electric telescopic rod 15, the driving end of the air cylinders 16 is fixedly connected with the output end of the electric telescopic rod 15, and the air cylinders 16 are communicated with the suction cups 17 through connecting pipes.

When electric telescopic handle 15 circular telegram extension carried out the physics experiment, drive the drive end of inflator 16 and move up relatively base 1, and then take out the air between sucking disc 17 and the laboratory bench through inflator 16 for whole device can stably place on the laboratory bench, prevents that experimental process manual operation from causing the device to empty and collide with, causes the precision of instrument to change.

With the above embodiments in mind, the utility model discloses a theory of operation is:

in use the utility model discloses the time, through the work of 15 circular telegrams of electric telescopic handle, it breaks away from and puts thing piece 3 and be in unsettled state to drive gravity piece 4, operation panel 8 through rotating 2 both sides of mount pad wantonly, it rotates to drive threaded rod 7, make first slider 5 relative mount pad 2 remove, the angle between connecting rod 9 and the gravity piece 4 changes, and then under the effect of gravity piece 4 gravity, make the second slider 6 of both sides move down the distance that corresponds according to the relative first slider 5 of angle between connecting rod 9 and the gravity piece 4, move down through connecting the piston 13 that the rope drive corresponds, make the liquid level of coloured solution 14 and the different positions parallel and level of registration plate 10.

When the electric telescopic rod 15 is electrified and extended to carry out a physical experiment, the driving end of the air cylinder 16 is driven to move upwards relative to the base 1, and then air between the suction cup 17 and the experiment table is pumped out through the air cylinder 16, so that the whole device can be stably placed on the experiment table.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

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. A demonstration device for physics experiments comprises a base (1) and a mounting seat (2), wherein a plurality of electric telescopic rods (15) are symmetrically connected between the base (1) and the mounting seat (2), and is characterized in that a mechanics demonstration mechanism is arranged between the base (1) and the mounting seat (2), the mechanics demonstration mechanism comprises a gravity block (4), two first sliding blocks (5) symmetrically and slidably mounted on the mounting seat (2) and a second sliding block (6) slidably mounted on the first sliding blocks (5), the second sliding blocks (6) are connected with the first sliding blocks (5) through elastic pieces, the second sliding blocks (6) are hinged with the gravity block (4) through connecting rods (9), two threaded rods (7) are symmetrically and rotatably mounted in the mounting seat (2), the threaded rods (7) penetrate through the first sliding blocks (5) and are in threaded fit with the first sliding blocks (5), the one end fixed mounting of threaded rod (7) has operation panel (8), just fixed mounting has on base (1) puts thing piece (3) with gravity piece (4) looks adaptation, the one end of gravity piece (4) slides and inserts and establish in putting thing piece (3), just mechanics demonstration mechanism still includes observation unit.

2. Demonstration device for physical experiments according to claim 1, characterised in that said elastic means are springs (12).

3. Demonstration device for physical experiments according to claim 1, characterized in that said observation unit comprises a test tube (11) fixedly mounted on said first slider (5), a dial plate (10) fixedly mounted on one side of said test tube (11), and a piston (13) slidably mounted in said test tube (11), said piston (13) being elastically connected to said test tube (11) at one end thereof and to said second slider (6) by means of a connecting rope, said test tube (11) being filled with a colored solution (14) at the upper side region of said piston (13).

4. Demonstration device for physical experiments according to claim 1, characterised in that a securing mechanism is provided on the base (1).

5. The demonstration device for physical experiments according to claim 4, wherein the stabilizing mechanism comprises a plurality of suction cups (17) symmetrically and fixedly installed on the base (1) and a plurality of air cylinders (16), the air cylinders (16) are fixedly installed at the fixed end of the electric telescopic rod (15), the driving end of the air cylinders (16) is fixedly connected with the output end of the electric telescopic rod (15), and the air cylinders (16) are communicated with the suction cups (17) through connecting pipes.