CN215895767U - Newton's mechanics and frictional force demonstrator - Google Patents
Newton's mechanics and frictional force demonstrator Download PDFInfo
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- CN215895767U CN215895767U CN202121942016.6U CN202121942016U CN215895767U CN 215895767 U CN215895767 U CN 215895767U CN 202121942016 U CN202121942016 U CN 202121942016U CN 215895767 U CN215895767 U CN 215895767U
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Abstract
The utility model relates to a Newton's mechanics and friction force demonstrator which comprises a demonstration table main body, an experiment sliding table, a movable base and a limiting frame, wherein the front end and the rear end of the upper surface of the experiment sliding table are fixedly connected with a second pressing plate, the upper ends of the two pressing plates are respectively provided with a second limiting slide bar which penetrates through the second pressing plate and is slidably connected with a penetrating part, the upper ends of the second limiting slide bars are fixedly connected with a first limiting plate, the lower ends of the second limiting plates are fixedly connected with second pressing springs which are slidably connected with the surfaces of the second limiting slide bars and are fixedly connected with the second pressing plates, the two first pressing plates are arranged in the limiting frame, the upper ends of the first pressing plates are respectively provided with a first limiting slide bar which penetrates through the pressing plates and is slidably connected with the penetrating parts, and the upper ends of the first limiting slide bars are fixedly connected with a second limiting plate. The Newton mechanics and friction force demonstrator can be used for performing two demonstration experiments of Newton mechanics and friction force on the same device, and is practical.
Description
Technical Field
The utility model relates to the technical field of demonstration experiments, in particular to a Newton mechanics and friction force demonstrator.
Background
The demonstration experiment belongs to visual teaching, and has certain difference compared with grouping experiment and extracurricular activity. The basic mode of the demonstration experiment is that a teacher demonstrates the experiment process, shows biological phenomena, guides students to observe, think and analyze the experiment phenomena, and obtains a conclusion. Also can demonstrate by the student that classmates go on in class oneself, and the demonstration content not only includes the experiment that the teaching material regulation will demonstrate, still should include the demonstration content that the teacher designed by oneself according to the teaching needs to demonstrate to demonstration such as experiment sample, slide.
When newton's mechanics and frictional force demonstrate the experiment, need use the demonstration ware device to demonstrate the experiment, traditional presentation device can only carry out a demonstration experiment, can not change other demonstration experiments according to people's demand, and it is not good to demonstrate the effect moreover, for this reason, we have provided a newton's mechanics and frictional force demonstration ware.
SUMMERY OF THE UTILITY MODEL
The utility model provides a Newton's mechanics and friction force demonstrator, which solves the technical problems that the traditional demonstration device in the prior art can only perform one demonstration experiment, can not replace other demonstration experiments according to the requirements of people, and is poor in demonstration effect.
The scheme for solving the technical problems is as follows: comprises a demonstration table main body, an experiment sliding table, a movable base and a limiting frame, wherein the front end and the rear end of the upper surface of the experiment sliding table are fixedly connected with two pressing plates, the upper ends of the two pressing plates are respectively provided with two limiting slide rods which respectively penetrate through the two pressing plates and are in sliding connection with penetrating parts, the upper ends of the two limiting slide rods are fixedly connected with a first limiting plate, the lower end of the limiting plate is fixedly connected with a second pressing spring which is in sliding connection with the surfaces of the two limiting slide rods and is fixedly connected with the two pressing plates, the limiting frame is internally provided with two first pressing plates, the upper ends of the two first pressing plates are respectively provided with a first limiting slide bar which runs through the pressing plates and is connected with the running-through part in a sliding mode, the upper end of the first limiting slide bar is fixedly connected with a second limiting plate, the lower end of the second limiting plate is fixedly connected with a first pressing spring which is connected with the first limiting slide bar in a surface sliding mode and is fixedly connected with the first pressing plate, and the upper end of the limiting frame is fixedly connected with a velometer.
On the basis of the technical scheme, the utility model can be further improved as follows.
Furthermore, a lower end of the limiting slide rod is fixedly connected with the upper end of the demonstration table main body, and a lower end of the limiting slide rod is fixedly connected with the surface of the experiment sliding table.
Furthermore, the upper end surfaces of the first pressing plate and the second pressing plate are fixedly connected with handles, and the limiting frame is fixedly connected with the demonstration table main body.
Furthermore, the experiment sliding table is fixedly connected with the demonstration table main body, and the surface of the front end of the experiment sliding table is fixedly connected with a speed display screen matched with the velometer.
Furthermore, two side surfaces of the pressure strip have all been provided with a limit baffle fixedly connected with the surface of the experiment sliding table.
Further, the surface of the lower end of the moving base is fixedly connected with the moving wheel, the surface of the upper end of the moving base is fixedly connected with the stable sliding barrel, and the output end of the stable sliding barrel is fixedly connected with the surface of the lower end of the demonstration table main body.
Furthermore, the surface of the upper end of the movable base is fixedly connected with a fixed frame, a movable plate which is connected with the fixed frame in a sliding manner is arranged in the fixed frame, the upper end of the movable plate is fixedly connected with a lifting rod which penetrates through the fixed frame and is connected with a penetrating part in a sliding manner, and the lifting rod is fixedly connected with the demonstration table main body.
Furthermore, the fixed frame is internally provided with a lifting motor fixedly connected with the upper end of the movable base, the output end of the lifting motor is fixedly connected with a screw rod which penetrates through the movable plate and is in threaded connection with the penetrating part, and the upper end of the screw rod is rotatably connected with the inside of the fixed frame.
The utility model has the beneficial effects that: the utility model provides a Newton mechanics and friction force demonstrator, which has the following advantages:
1. through the combined action of the second pressing plate, the second limiting slide rod and the second pressing spring, the friction plate for experiment can be conveniently installed at the upper end of the experiment sliding table for experiment operation, and the friction plates with different friction coefficients can be conveniently replaced for experiment, so that the experiment is convenient, through the cooperation of the first pressing plate, the first limiting slide rod and the first pressing spring, the Newton mechanics experiment can be conveniently carried out on the resistance plate with resistance on the inner installation surface of the limiting frame, the resistance plates with different resistance coefficients can be conveniently replaced for experiment, through the cooperation between the set velometer and the speed display screen, the speed measurement processing can be carried out on the speed of the sliding block during sliding movement, then the speed is displayed on the surface of the speed display screen, so that the experiment data can be conveniently calculated;
2. through the cooperation between the elevator motor who sets up and the screw rod, can be through the rotation of control elevator motor, then it is rotatory to drive the screw rod to the movable plate that makes the setting drives the lifter and removes, thereby highly adjusts the demonstration platform main part, highly adjusts the height of being convenient for experiment to the demonstration platform main part during the experiment of being convenient for, is convenient for experiment.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a newton mechanics and friction demonstrator according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the Newtonian mechanics and friction demonstrator provided in FIG. 1;
FIG. 3 is a cross-sectional view of a demonstration slide table in a Newtonian mechanics and friction force demonstrator in accordance with the present invention;
fig. 4 is a front view of the newton mechanics and friction force demonstrator provided in fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a limiting frame; 2. a demonstration table main body; 3. a velometer; 4. an experiment sliding table; 5. a speed display screen; 6. a stable slide cylinder; 7. moving the base; 8. a first compression plate; 9. a first limiting sliding rod; 10. a first compression spring; 11. a second limiting sliding rod; 12. a second compression spring; 13. a second compression plate; 14. a fixed mount; 15. a lifting motor; 16. a screw.
Detailed Description
The principles and features of the present invention are described below in conjunction with the accompanying fig. 1-4, which are provided by way of example only to illustrate the present invention and not to limit the scope of the present invention. The utility model is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in figures 1-4, the utility model provides a Newton's mechanics and friction force demonstrator, which comprises a demonstration table main body 2, an experiment sliding table 4, a movable base 7 and a limiting frame 1, wherein the front end and the rear end of the upper surface of the experiment sliding table 4 are fixedly connected with two pressing plates 13, the upper ends of the two pressing plates 13 are respectively provided with two limiting slide bars 11 which penetrate through the two pressing plates 13 and are slidably connected with the penetrating parts, the upper ends of the two limiting slide bars 11 are fixedly connected with a first limiting plate, the lower ends of the limiting plates are fixedly connected with a second pressing spring 12 which is slidably connected with the surfaces of the two limiting slide bars 11 and is fixedly connected with the two pressing plates 13, the inside of the limiting frame 1 is provided with two pressing plates 8, the upper ends of the two pressing plates 8 are respectively provided with a first limiting slide bar 9 which penetrates through the first pressing plates 8 and is slidably connected with the penetrating parts, the upper ends of the first limiting slide bars 9 are fixedly connected with a second limiting plate, the lower end of the second limiting plate is fixedly connected with a first compression spring 10 which is in surface sliding connection with the first limiting slide rod 9 and is fixedly connected with the first compression plate 8, and the upper end surface of the limiting frame 1 is fixedly connected with a velometer 3.
Preferably, the lower end of the first limiting slide rod 9 is fixedly connected with the upper end of the demonstration table main body 2, and the lower end of the second limiting slide rod 11 is fixedly connected with the surface of the experiment sliding table 4.
Preferably, two the upper end surface of the first pressure strip 8 and the second pressure strip 13 is fixedly connected with a handle, the limiting frame 1 is fixedly connected with the demonstration table main body 2, and the first pressure strip 8 or the second pressure strip 13 can be conveniently pulled up through the arranged handle to be replaced and installed.
Preferably, fixed connection between experiment slip table 4 and the demonstration platform main part 2, experiment slip table 4 front end fixed surface has connected with velometer 3 matched with speed display screen 5, and speed display screen 5 can show the speed that velometer 3 detected.
Preferably, two 13 side surfaces of the pressure strip have all been set up with experiment slip table 4 fixed surface is connected limit baffle.
Preferably, the surface of the lower end of the movable base 7 is fixedly connected with the movable wheel, the surface of the upper end of the movable base 7 is fixedly connected with the stable sliding barrel 6, and the output end of the stable sliding barrel 6 is fixedly connected with the surface of the lower end of the demonstration table main body 2.
Preferably, the surface of the upper end of the movable base 7 is fixedly connected with a fixed frame 14, a movable plate which is slidably connected with the fixed frame 14 is arranged in the fixed frame 14, the upper end of the movable plate is fixedly connected with a lifting rod which penetrates through the fixed frame 14 and is slidably connected with a penetrating part, and the lifting rod is fixedly connected with the demonstration table main body 2.
Preferably, the lifting motor 15 fixedly connected with the upper end of the movable base 7 is arranged in the fixed frame 14, the output end of the lifting motor 15 is fixedly connected with a screw rod 16 penetrating through the movable plate and in threaded connection with a penetrating part, the upper end of the screw rod 16 is rotatably connected with the inside of the fixed frame 14, and the height of the demonstration table main body 2 can be adjusted through the arranged lifting motor 15.
The specific working principle and the using method of the utility model are as follows:
the utility model provides a Newton mechanics and friction force demonstrator, which is used for controlling a lifting motor 15 to rotate so as to rotate a screw 16, thereby enabling a moving plate to drive a lifting rod to move, thereby adjusting the height of a demonstration table main body 2, adjusting to a proper demonstration position and stopping, pulling a second pressing plate 13 through a handle when demonstrating friction force, then placing a matched friction plate at the upper end of an experiment sliding table 4, loosening the handle, fixing an installed friction plate through the action of a second pressing spring 12, then sliding on the surface of the installed friction plate through a slide block, recording the sliding speed measured by a velometer 3, pulling out the second pressing plate 13 through the handle to replace the friction plate with different friction coefficients for installation experiment, measuring the speed again through the velometer 3, and comparing with the previous record, a conclusion can be drawn.
When needs demonstrate newton mechanics, 4 upper end surfaces of experiment slip table keep smooth, then pull up pressure strip 8 through the handle, then place the resistance board that has the coefficient of resistance in spacing 1 inside and install, then make the slider slide down for the speed automation of zero at experiment slip table 4 upper end with the initial velocity, measure speed through velometer 3 and carry out the record, then pull out pressure strip 8 through the handle and change the resistance board of different coefficient of resistance, experiment once more on the same, calculate the experiment conclusion through two sets of data at last, can demonstrate in the newton mechanics: the inference that the smaller the resistance experienced by the object, the longer the distance traveled.
The foregoing is merely a preferred embodiment of the utility model and is not intended to limit the utility model in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the utility model as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (8)
1. A Newton's mechanics and friction demonstrator comprises a demonstration platform main body (2), an experiment sliding table (4), a movable base (7) and a limiting frame (1), and is characterized in that the front end and the rear end of the upper surface of the experiment sliding table (4) are fixedly connected with two pressing plates (13), two limiting slide rods (11) which penetrate through the two pressing plates (13) and are slidably connected with penetrating positions are arranged at the upper ends of the two pressing plates (13), a first limiting plate is fixedly connected at the upper end of the second limiting slide rod (11), a second pressing spring (12) which is slidably connected with the surface of the second limiting slide rod (11) and is fixedly connected with the second pressing plate (13) is fixedly connected at the lower end of the limiting plate, two pressing plates (8) are arranged in the limiting frame (1), a first limiting slide rod (9) which penetrates through the first pressing plate (8) and is slidably connected with the penetrating positions is arranged at the upper ends of the two pressing plates (8), the upper end of the first limiting slide rod (9) is fixedly connected with a second limiting plate, the lower end of the second limiting plate is fixedly connected with a first pressure spring (10) which is in surface sliding connection with the first limiting slide rod (9) and is fixedly connected with a first pressure plate (8), and the surface of the upper end of the limiting frame (1) is fixedly connected with a velometer (3).
2. The Newton's mechanics and friction force demonstrator according to claim 1, wherein the lower end of the first limiting slide rod (9) is fixedly connected with the upper end of the demonstration table main body (2), and the lower end of the second limiting slide rod (11) is fixedly connected with the surface of the experiment sliding table (4).
3. The Newton's mechanics and friction force demonstrator according to claim 1, wherein a handle is fixedly connected to the upper end surfaces of the two first compression plates (8) and the two second compression plates (13), and the limiting frame (1) is fixedly connected to the demonstration table main body (2).
4. The Newtonian mechanics and friction force demonstrator according to claim 1, wherein said experiment table (4) is fixedly connected with said demonstration table main body (2), and said experiment table (4) has a front surface fixedly connected with a speed display screen (5) cooperating with said velometer (3).
5. The Newton's mechanics and friction force demonstrator according to claim 1, wherein a limiting baffle fixedly connected with the surface of the experiment sliding table (4) is arranged on each of the two compression plates (13).
6. The Newton's mechanics and friction force demonstrator according to claim 1, wherein said moving base (7) is fixedly connected to the lower surface of the moving wheel, said moving base (7) is fixedly connected to the upper surface of the stabilizing sliding cylinder (6), and the output end of the stabilizing sliding cylinder (6) is fixedly connected to the lower surface of the demonstration table main body (2).
7. The Newton's mechanics and friction force demonstrator according to claim 6, wherein a fixed frame (14) is fixedly connected to the upper surface of the movable base (7), a movable plate slidably connected to the fixed frame (14) is disposed inside the fixed frame (14), a lifting rod penetrating the fixed frame (14) and slidably connected to the penetrating portion is fixedly connected to the upper end of the movable plate, and the lifting rod is fixedly connected to the demonstration table main body (2).
8. The Newton's mechanics and friction force demonstrator according to claim 7, wherein said fixed frame (14) is internally provided with a lifting motor (15) fixedly connected to the upper end of said movable base (7), the output end of said lifting motor (15) is fixedly connected to a screw (16) passing through said movable plate and threadedly connected to the passing portion, and the upper end of said screw (16) is rotatably connected to the inside of said fixed frame (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942016.6U CN215895767U (en) | 2021-08-18 | 2021-08-18 | Newton's mechanics and frictional force demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121942016.6U CN215895767U (en) | 2021-08-18 | 2021-08-18 | Newton's mechanics and frictional force demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215895767U true CN215895767U (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121942016.6U Expired - Fee Related CN215895767U (en) | 2021-08-18 | 2021-08-18 | Newton's mechanics and frictional force demonstrator |
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| Country | Link |
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| CN (1) | CN215895767U (en) |
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2021
- 2021-08-18 CN CN202121942016.6U patent/CN215895767U/en not_active Expired - Fee Related
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Granted publication date: 20220222 |