CN211787776U

CN211787776U - Frictional force and inclined plane teaching device

Info

Publication number: CN211787776U
Application number: CN202020398355.1U
Authority: CN
Inventors: 刘洪涛; 杨志勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2020-10-27
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a frictional force teaching technical field specifically is a frictional force and inclined plane teaching device, the on-line screen storage device comprises a base, the right side welding of base has the roating seat, the inside rotation of roating seat is connected with surveys test panel, three sliding tray has been seted up to the upper surface of surveying test panel, and on the inner wall of three sliding tray respectively the joint have tile board, plank and rubber slab, the right side inner wall of sliding tray all has the inductor through bolted connection, the inside of surveying test panel is provided with stop gear, the inner wall of adjustment tank is provided with adjustment mechanism. This frictional force and inclined plane teaching device slides at the plane of different roughness through three test piece and carries out the teaching experiment of frictional force, adjusts different heights, when making contrast test, realizes carrying out effectual verification explanation to frictional force to the frictional force test of co-altitude, through the experiment of the different height of multiunit to carry out better verification to the teaching in-process, provide certain experimental data for the theory.

Description

Frictional force and inclined plane teaching device

Technical Field

The utility model relates to a frictional force teaching technical field specifically is a frictional force and inclined plane teaching device.

Background

When one object slides on the surface of the other object, friction, called sliding friction, is generated between the contact surfaces to block the relative movement of the two objects. The magnitude of the sliding friction force is related to the magnitude of the roughness of the contact surface and the magnitude of the pressure. The larger the pressure is, the rougher the contact surface of the object is, the larger the generated sliding friction force is, and the friction force is divided into static friction force, rolling friction and sliding friction.

And in the middle of the teaching of school, ordinary characters can't carry out comprehensive careful explanation of going to the student, only through experimental science's simulation, demonstrate the definition in addition, better play certain cognition to the student, and in the middle of present teaching, the teacher just does some simple devices and describes, and inside uncertain factor has a lot, for example highly different, and the inclination is different, all can cause the influence to experimental data to lack certain persuasion to the data of experiment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a frictional force and inclined plane teaching device to solve the problem that proposes in the above-mentioned background art.

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

the utility model provides a frictional force and inclined plane teaching device, includes the base, the right side welding of base has the roating seat, the inside rotation of roating seat is connected with surveys test panel, three sliding tray has been seted up to the upper surface of surveying test panel, and on the inner wall of three sliding tray respectively the joint have ceramic tile board, plank and rubber slab, the right side inner wall of sliding tray all has the inductor through bolted connection, the inside of surveying test panel is provided with stop gear, the adjustment tank has been seted up at the top of base, the inner wall of adjustment tank is provided with adjustment mechanism.

Preferably, the bottom of the test board is slidably connected with two rollers, the rollers are rotatably connected inside the rollers, and the surface of each roller is welded with a support rod.

Preferably, there are three timers at the left end of the test board through bolted connection, and the three timers are located the left side of three sliding tray respectively, equal sliding connection of the left end inner wall of sliding tray has the test piece, the weight size of test piece is the same.

Preferably, the adjusting mechanism comprises a rotating sleeve, the surface of the rotating sleeve is welded with a threaded sleeve, the inner thread of the threaded sleeve is connected with a screw, the surface of the screw is welded with a rotating wheel, and the lower end of the screw is rotatably connected with a sliding block.

Preferably, the surface of the sliding block is slidably connected to the inner wall of the adjusting groove, and the inner wall of the rotating sleeve is welded to the surface of the support rod.

Preferably, stop gear is including the connecting plate, the top welding of connecting plate has three gag lever post and a press bar, the spring has been cup jointed on the surface of pressing the bar, the bottom welding of spring is at the top of connecting plate, the top welding of spring is in the bottom of surveying the board, the top of gag lever post all runs through survey the board and extend to the inside of sliding tray, the top of pressing the bar runs through survey the board and extends to the outside of surveying the board.

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

1. this frictional force and inclined plane teaching device, slide the teaching experiment that carries out frictional force at the plane of different roughness through three test piece, different height is adjusted as required, when contrast test, can rotate the runner, the mode through threaded connection realizes rising the screw sleeve, thereby drive the one-way rising of the left end of whole survey test panel, the realization is tested the frictional force of co-altitude, contrast experiment is made, through the experiment of the different height of multiunit, come to carry out effectual verification explanation to frictional force, thereby carry out better verification to the teaching in-process, provide certain experimental data for the theory.

2. This frictional force and inclined plane teaching device makes it spacing to break away from the sliding tray with the three gag lever post of direct control according to the depression bar removal, and the cancellation blocks spacingly, guarantees that gliding time sequence keeps unanimous, thereby the time sequence of avoiding appearing placing causes certain error further improvement experimental data's accuracy.

Drawings

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

fig. 2 is a schematic view of an adjusting mechanism of the present invention;

fig. 3 is a schematic view of the middle limiting mechanism of the present invention.

In the figure: 1. a base; 2. a rotating base; 3. a sliding groove; 4. an inductor; 5. an adjustment mechanism; 51. a slider; 52. a rotating wheel; 53. a screw; 54. a threaded sleeve; 55. rotating the sleeve; 6. a limiting mechanism; 61. a pressing lever; 62. a spring; 63. a limiting rod; 64. a connecting plate; 7. a tile panel; 8. a wood board; 9. a rubber plate; 10. a timer; 11. a test block; 12. an adjustment groove; 13. a support rod; 14. a roller; 15. a roller; 16. and (6) testing the board.

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.

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", 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 to simplify the description, but 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a frictional force and inclined plane teaching device, including base 1, the right side welding of base 1 has roating seat 2, the inside rotation of roating seat 2 is connected with surveys test panel 16, survey test panel 16's upper surface and seted up three sliding tray 3, and on the inner wall of three sliding tray 3 respectively the joint have ceramic tile board 7, plank 8 and rubber slab 9, sliding tray 3's right side inner wall all has inductor 4 through bolted connection, survey test panel 16's inside and be provided with stop gear 6, adjustment tank 12 has been seted up at base 1's top, adjustment tank 12's inner wall is provided with adjustment mechanism 5.

In addition, survey test panel 16's bottom sliding connection has two gyro wheels 14, and gyro wheel 14's inside all rotates and is connected with roller bearing 15, and roller bearing 15's skin weld has cradling piece 13, realizes surveying test panel 16's overall balance through two gyro wheels 14, reduces the condition that the slope appears, influences the slip parameter of slider, and then leads to the fact certain error to experimental data.

In addition, there are three timers 10 at the left end of survey test panel 16 through bolted connection, and three timers 10 are located the left side of three sliding tray 3 respectively, and the equal sliding connection of the left end inner wall of sliding tray 3 has test block 11, and test block 11's weight size is all the same, and the contact response through timers 10 directly shows experimental data, gives the visual display that the teaching process can be more.

Further, adjustment mechanism 5 has swivel nut 54 including changeing cover 55, the skin weld of changeing cover 55, the internal thread connection of swivel nut 54 has screw rod 53, the skin weld of screw rod 53 has runner 52, the lower extreme of screw rod 53 rotates and is connected with slider 51, realize the regulation to the height through rotating screw rod 53, realize carrying out reasonable effectual verification to the parameter of co-altitude not, make that experimental data can be more convincing through multiunit data, provide certain foundation for the teaching in-process.

Furthermore, the surface of the sliding block 51 is slidably connected to the inner wall of the adjusting groove 12, the inner wall of the rotating sleeve 55 is welded to the surface of the support rod 13, and if the height is insufficient, the sliding block 51 can be moved to adjust the supporting distance, so that the height can be adjusted in multiple sizes.

It is worth noting that limiting mechanism 6 is including connecting plate 64, the top welding of connecting plate 64 has three gag lever post 63 and a press bar 61, press bar 61's surface has cup jointed spring 62, the bottom welding of spring 62 is at the top of connecting plate 64, the top welding of spring 62 is in the bottom of surveying test panel 16, the top of gag lever post 63 all runs through survey test panel 16 and extends to the inside of sliding tray 3, press bar 61's top to run through survey test panel 16 and extend to survey test panel 16's outside, realize the spacing effect to the slider through gag lever post 63, make the slip order of slider keep unanimous, reduce the influence of external factor to experimental data.

When the friction and inclined plane teaching device of the utility model is used, the teaching experiment of the friction is carried out by the sliding of the three test blocks 11 on the planes with different roughness, when different heights are required to be adjusted, the rotating wheel 52 can be rotated to lift the screw sleeve 54 in a threaded connection mode, thereby driving the left end of the whole test board 16 to rise in a single direction, the friction test of different heights is realized, after the height adjustment is finished, the pressing rod 61 is moved to directly control the three limiting rods 63 to be separated from the sliding groove 3 for limiting, the blocking limiting is cancelled, the effect of integral free sliding is realized, the time sequence of sliding is ensured to be consistent, certain errors caused by the time sequence of placement are avoided, when the three sliders move simultaneously and are separated from the timer 10, the timer 10 starts timing, when the three sliders slide to the bottom of the sliding groove 3, touching inductor 4, the time-recorder stops the timing to obtain experimental data, slide through the planar inclined plane of three different roughness, come to carry out fine visual experiment to frictional force and verify the teaching, provide the data of frictional force literal interpretation and participate in the evidence, provide certain data for the teaching.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a frictional force and inclined plane teaching device, includes base (1), its characterized in that: the right side welding of base (1) has roating seat (2), the inside rotation of roating seat (2) is connected with surveys test panel (16), three sliding tray (3) have been seted up to the upper surface of surveying test panel (16), and on the inner wall of three sliding tray (3) respectively the joint have ceramic tile board (7), plank (8) and rubber slab (9), the right side inner wall of sliding tray (3) all has inductor (4) through bolted connection, the inside of surveying test panel (16) is provided with stop gear (6), adjustment tank (12) have been seted up at the top of base (1), the inner wall of adjustment tank (12) is provided with adjustment mechanism (5).

2. The friction and incline teaching device of claim 1 wherein: the bottom sliding connection who surveys test panel (16) has two gyro wheels (14), two it is connected with roller bearing (15) to rotate between gyro wheel (14), the surface welding of roller bearing (15) has cradling piece (13).

3. The friction and incline teaching device of claim 1 wherein: the left end of surveying test panel (16) has three time-recorder (10) through bolted connection, and three time-recorder (10) are located the left side of three sliding tray (3) respectively, the equal sliding connection of the left end inner wall of sliding tray (3) has test piece (11), the weight size homogeneous phase of test piece (11) is the same.

4. The friction and incline teaching device of claim 1 wherein: adjustment mechanism (5) have swivel nut (55) including changeing, the skin weld of changeing swivel nut (55) has swivel nut (54), the inside threaded connection of swivel nut (54) has screw rod (53), the skin weld of screw rod (53) has runner (52), the lower extreme of screw rod (53) is rotated and is connected with slider (51).

5. The friction and incline teaching device of claim 4 wherein: the surface of the sliding block (51) is connected to the inner wall of the adjusting groove (12) in a sliding mode, and the inner wall of the rotating sleeve (55) is welded to the surface of the support rod (13).

6. The friction and incline teaching device of claim 1 wherein: stop gear (6) are including connecting plate (64), the top welding of connecting plate (64) has three gag lever post (63) and one to press depression bar (61), spring (62) have been cup jointed on the surface of pressing depression bar (61), the bottom welding of spring (62) is at the top of connecting plate (64), the top welding of spring (62) is in the bottom of surveying test panel (16), the inside of surveying test panel (16) and extending to sliding tray (3) is all run through on the top of gag lever post (63), the outside of surveying test panel (16) and extending to survey test panel (16) is run through on the top of pressing depression bar (61).