CN213070275U

CN213070275U - Physics frictional force demonstration experimental apparatus

Info

Publication number: CN213070275U
Application number: CN202021940544.3U
Authority: CN
Inventors: 姜宇涵; 徐鋆卉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-27
Anticipated expiration: 2030-09-08

Abstract

The utility model belongs to the technical field of teaching aids, and discloses a physical friction force demonstration experimental tool, which comprises a base, wherein one end of the top of the base is movably connected with a supporting plate through a rotating shaft, the top of the supporting plate is provided with a limiting groove, the inside of the limiting groove is connected with an experimental plate, one end of the top of the supporting plate is close to the upper part of the experimental plate and is provided with a force measuring device, the top of the base is close to the lower part of the supporting plate and is provided with a cavity groove, the inside of the cavity groove is movably connected with a lead screw through a bearing, the outer wall of the lead screw is sleeved with a screw sleeve, and one end of the lead screw extending to the outside of the base is provided with a rotating rod, the angle of the connecting supporting plate can be adjusted through the matching of structures such as the rotating rod, the lead screw, the screw sleeve and the connecting rod, not only easy operation is convenient, and stability is strong, has improved the result of use of device greatly.

Description

Physics frictional force demonstration experimental apparatus

Technical Field

The utility model belongs to the technical field of the teaching aid, concretely relates to physics frictional force demonstration experimental apparatus.

Background

The teaching aid is a general name of various appliances used by students for visually and vividly understanding teaching contents and appliances used by teachers during teaching, namely the teaching aid is short for, can improve the learning interest of the students, enriches the perceptual knowledge, helps to form a clear concept, develops the observation capability and thinking capability of the students, and is generally classified into 3 types of common teaching aids, special teaching aids and infant teaching aids.

In the chinese patent of CN202020166517.9 that patent number is, disclose a high school physics frictional force presentation device, the device is through inserting the bracing piece in the different fluting, in order to change the angle of layer board, thereby demonstrate the relation between different inclination and the frictional force, but the turned angle of unable accurate control layer board during in-service use, thereby the inclination of unable accurate regulation experiment board, and poor stability, the in-service use effect is not good, in addition, the device is through changing the experiment board, with the coefficient of friction of plate body when changing the test, but the fixed effect of experiment board is relatively poor, the plate body takes place the activity easily when the test piece slides, thereby influence the accuracy of experimental data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a physics frictional force demonstration experimental apparatus to the angle control effect of the layer board of proposing is not good in solving above-mentioned background art, and the poor problem of fixed effect of experiment board.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a physics frictional force demonstration experimental apparatus, includes the base, there is the layer board top one end of base through pivot swing joint, the spacing groove has been seted up at the top of layer board, the internal connection of spacing groove has the laboratory sheet, the top one end of layer board is close to the top of laboratory sheet and installs the ergograph, the top of base is close to the below of layer board and has seted up the chamber groove, the inside in chamber groove has the lead screw through bearing swing joint, the outer wall cover of lead screw is equipped with the swivel nut, and the lead screw extends to the outside one end of base and installs the bull stick, the top of swivel nut articulates there is the connecting rod, the one end that the swivel nut was kept away from to the connecting rod.

Preferably, the reference column is installed to the bottom of laboratory sheet, the inner wall bottom of spacing groove seted up with reference column assorted locating hole, the fixture block is all installed to the both sides of laboratory sheet, the inner wall both sides of spacing groove all seted up with fixture block assorted draw-in groove.

Preferably, the bottom of base is installed the rubber pad, and the bottom of rubber pad is provided with the arch.

Preferably, the inner wall of the clamping groove is provided with a backing plate, and the outer wall of the backing plate is provided with an anti-slip groove.

Preferably, the lifting rope is installed at the end, far away from the rotating rod, of the base, and the fixture block is trapezoidal.

Preferably, the top of the base is provided with a storage groove, and the storage groove is positioned on one side of the cavity groove.

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

(1) the utility model discloses a cooperation of bull stick, lead screw, swivel nut and connecting rod isotructure can be adjusted the angle of even layer board to can adjust the inclination of experiment board, and the angle of experiment board can realize accurate control, not only easy operation is convenient, and stability is strong, has improved the result of use of device greatly.

(2) The utility model discloses a cooperation of reference column, locating hole, fixture block and draw-in groove can make the card that the test panel is firm at the layer board at the spacing inslot to with the test panel firmly on the layer board, and then strengthened the stability of test panel, prevented that the test block from driving the test panel activity when sliding, improved the accuracy of experimental data.

Drawings

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

fig. 2 is a top view of the pallet of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 2;

in the figure: 1. a support plate; 2. a lifting rope; 3. a base; 4. a threaded sleeve; 5. a connecting rod; 6. a screw rod; 7. a cavity groove; 8. a rotating rod; 9. a limiting groove; 10. a force measuring device; 11. an experimental plate; 12. a positioning column; 13. positioning holes; 14. a clamping block; 15. a clamping groove.

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.

Referring to fig. 1-4, the present invention provides the following technical solutions: a physics friction force demonstration experiment tool comprises a base 3, wherein one end of the top of the base 3 is movably connected with a supporting plate 1 through a rotating shaft, the top of the supporting plate 1 is provided with a limiting groove 9, the inside of the limiting groove 9 is connected with an experiment plate 11, one end of the top of the supporting plate 1 is provided with a force measuring device 10 close to the upper part of the experiment plate 11, the top of the base 3 is provided with a cavity groove 7 close to the lower part of the supporting plate 1, the inside of the cavity groove 7 is movably connected with a screw rod 6 through a bearing, the outer wall of the screw rod 6 is sleeved with a screw sleeve 4, a rotating rod 8 is arranged at one end of the screw rod 6 extending to the outside of the base 3, the top of the screw sleeve 4 is hinged with a connecting rod 5, when the angle of the supporting plate 1 needs to be changed, the rotating rod 8 is used for driving the screw rod 6 to rotate, then the screw rod 6 drives the screw sleeve 4 to, and angle regulation can accurate control, and easy operation is convenient, and stability is strong, and the result of use is splendid, and the one end that swivel nut 4 was kept away from to connecting rod 5 is connected with layer board 1 through the pivot.

Further, reference column 12 is installed to the bottom of laboratory sheet 11, inner wall bottom of spacing groove 9 seted up with reference column 12 assorted locating hole 13, fixture block 14 is all installed to the both sides of laboratory sheet 11, inner wall both sides of spacing groove 9 all seted up with fixture block 14 assorted draw-in groove 15, through putting into spacing groove 9 with laboratory sheet 11, make reference column 12 insert in the locating hole 13, fixture block 14 inserts in the draw-in groove 15 simultaneously, through fixture block 14 and the mutual interlock of draw-in groove 15, reference column 12 and the mutual interlock of locating hole 13, thereby can firmly be on layer board 1 with laboratory sheet 11, and then strengthened laboratory sheet 11's stability, it moves to have prevented that test block from driving laboratory sheet 11 when sliding, the accuracy of experimental data has been improved.

Further, a rubber pad is arranged at the bottom of the base 3, the rubber pad has an anti-skid effect, and a bulge is arranged at the bottom of the rubber pad.

Specifically, the backing plate is installed to the inner wall of draw-in groove 15, and the backing plate plays firm effect, and the antiskid groove has been seted up to the outer wall of backing plate.

Specifically, lifting rope 2 is installed to the one end that the bull stick 8 is kept away from to base 3, and through lifting rope 2 portable device, fixture block 14 is trapezoidal.

Specifically, the top of the base 3 is provided with a storage groove, smaller tools such as a test block can be stored in the storage groove, and the storage groove is positioned on one side of the cavity groove 7.

The utility model discloses a theory of operation and use flow: when the utility model is used, the experimental plate 11 can be put into the limiting groove 9, the positioning column 12 is inserted into the positioning hole 13, the clamping block 14 is inserted into the clamping groove 15, the clamping block 14 is meshed with the clamping groove 15, the positioning column 12 is meshed with the positioning hole 13, so that the experimental plate 11 can be firmly fixed on the supporting plate 1, the stability of the experimental plate 11 is further enhanced, the experimental plate 11 is prevented from being driven to move when the test block slides, then the test block is put on the experimental plate 11, one end of the test block is hung on the hook of the dynamometer 10, then the test block is pulled leftwards to a certain area and then loosened, the dynamometer 10 is reset, the test block is pulled rightwards, so that the friction force of the area can be demonstrated, in addition, the rotation rod 8 is rotated to drive the screw rod 6 to rotate, then the screw rod 6 drives the screw sleeve 4 to move, the screw sleeve 4 drives the connecting rod 5 to move, so that the connecting rod 5 drives the supporting plate 1 to rotate, and then can adjust the inclination of laboratory sheet 11, and angle regulation can accurate control, and easy operation is convenient to can demonstrate the relation between different inclination and the frictional force.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A physics frictional force demonstration experimental apparatus which characterized in that: comprises a base (3), one end of the top of the base (3) is movably connected with a supporting plate (1) through a rotating shaft, the top of the supporting plate (1) is provided with a limiting groove (9), the limiting groove (9) is internally connected with an experimental plate (11), a force measuring device (10) is arranged at one end of the top of the supporting plate (1) close to the upper part of the experimental plate (11), a cavity groove (7) is arranged at the top of the base (3) and below the supporting plate (1), the inner part of the cavity groove (7) is movably connected with a screw rod (6) through a bearing, the outer wall of the screw rod (6) is sleeved with a threaded sleeve (4), and a rotating rod (8) is arranged at one end of the screw rod (6) extending to the outside of the base (3), the top of the threaded sleeve (4) is hinged with a connecting rod (5), and one end, far away from the threaded sleeve (4), of the connecting rod (5) is connected with the supporting plate (1) through a rotating shaft.

2. A physical friction force demonstration test tool according to claim 1, wherein: reference column (12) are installed to the bottom of experiment board (11), inner wall bottom of spacing groove (9) seted up with reference column (12) assorted locating hole (13), fixture block (14) are all installed to the both sides of experiment board (11), inner wall both sides of spacing groove (9) all seted up with fixture block (14) assorted draw-in groove (15).

3. A physical friction force demonstration test tool according to claim 1, wherein: the bottom of the base (3) is provided with a rubber pad, and the bottom of the rubber pad is provided with a bulge.

4. A physical friction force demonstration experimental tool according to claim 2, wherein: the inner wall of the clamping groove (15) is provided with a backing plate, and the outer wall of the backing plate is provided with an anti-slip groove.

5. A physical friction force demonstration experimental tool according to claim 2, wherein: the lifting rope (2) is installed at one end, far away from the rotating rod (8), of the base (3), and the clamping block (14) is trapezoidal.

6. A physical friction force demonstration test tool according to claim 1, wherein: the top of the base (3) is provided with a containing groove which is positioned at one side of the cavity groove (7).