CN107578677A - A teaching device for friction experiment - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及教学技术领域,具体为一种摩擦力实验教学装置。The invention relates to the field of teaching technology, in particular to a friction experiment teaching device.
背景技术Background technique
阻碍物体相对运动(或相对运动趋势)的力叫做摩擦力。摩擦力的方向与物体相对运动(或相对运动趋势)的方向相反,摩擦力分为静摩擦力、滚动摩擦、滑动摩擦三种,一个物体在另一个物体表面发生滑动时,接触面间产生阻碍它们相对运动的摩擦,称为滑动摩擦;滑动摩擦力的大小与接触面的粗糙程度的大小和压力大小有关。压力越大,物体接触面越粗糙,产生的滑动摩擦力就越大;The force that hinders the relative motion (or relative motion tendency) of objects is called friction. The direction of the friction force is opposite to the direction of the relative motion (or relative motion trend) of the object. The friction force is divided into three types: static friction, rolling friction, and sliding friction. When an object slides on the surface of another object, the contact surface will hinder them The friction of relative motion is called sliding friction; the magnitude of sliding friction is related to the roughness of the contact surface and the magnitude of the pressure. The greater the pressure, the rougher the contact surface of the object, and the greater the sliding friction generated;
申请号为201510126809.3,专利名称为一种摩擦力实验教学装置。它包括底板,所述底板一端铰接有转板,所述底板上设有凹槽,所述凹槽内铰接有气缸,所述气缸的另一端铰接在转板的底面,所述气缸与充气装置连接,所述转板上固设有角度指示盘,所述角度指示盘圆点处套挂有指示针。所述充气装置为脚踏或手动充气装置,所述充气装置与气缸之间设有开关。所述转板四周设有挡板。本发明可以演示各种角度的物理现象,以适应不同的教学要求,可以防止在转板上的实验物体滑出,提高了演示效果;The application number is 201510126809.3, and the patent name is a friction experiment teaching device. It includes a bottom plate, one end of the bottom plate is hinged with a rotating plate, a groove is provided on the bottom plate, a cylinder is hinged in the groove, the other end of the cylinder is hinged on the bottom surface of the rotating plate, the cylinder and the inflation device connected, the rotating plate is fixed with an angle indicating plate, and an indicating needle is hung on the dot of the angle indicating plate. The inflation device is a pedal or manual inflation device, and a switch is arranged between the inflation device and the cylinder. Baffles are arranged around the rotating plate. The present invention can demonstrate physical phenomena at various angles to meet different teaching requirements, prevent the experimental objects on the rotating plate from slipping out, and improve the demonstration effect;
但是该装置在对摩擦力进行实验的时候,不能很好的展示影响摩擦力的因素,而且不便于调节,不具备良好的教学效果。However, when the device is used to test the friction force, it cannot show the factors that affect the friction force well, and it is not easy to adjust, so it does not have a good teaching effect.
发明内容Contents of the invention
为了克服现有技术方案的不足,本发明提供一种摩擦力实验教学装置,不仅可以自由调节实验的时候压力大小,而且便于可以通过不同的摩擦面对学生演示影响摩擦力的因素,方便学生直观的了解摩擦力,达到良好的教学效果。In order to overcome the shortcomings of the existing technical solutions, the present invention provides a friction experiment teaching device, which can not only freely adjust the pressure during the experiment, but also facilitate students to demonstrate the factors that affect friction through different friction surfaces, so that students can intuitively A better understanding of friction, to achieve a good teaching effect.
本发明解决其技术问题所采用的技术方案是:一种摩擦力实验教学装置,包括实验平台、测力装置、调节装置和转换装置,所述测力装置包括弹簧测力计、移动座和推拉杆,所述推拉杆一端和移动座连接在一起,所述推拉杆另一端通过固定座进行固定,所述移动座底端安装有滑动轮,所述移动座通过滑动轮在实验平台表面滑动,所述调节装置包括固定台、施压座和压力计,所述固定台放置在实验平台表面,所述压力计包括连接板、压力传感器、AT89C51单片机、承压板和显示屏,所述承压板通过连接板和固定台连接在一起,所述压力传感器安装在承压板内部表面,所述施压座内部设置有凹槽,所述固定台和弹簧测力计之间通过金属杆连接在一起,所述转换装置包括旋转台和实验板,所述旋转台采用多边形结构,所述实验板均安装在旋转台的棱面表面,所述旋转台通过旋转轴进行旋转,所述固定座固定在实验平台的中间开口两侧。The technical scheme adopted by the present invention to solve the technical problems is: a friction experiment teaching device, including an experiment platform, a force measuring device, an adjustment device and a conversion device, and the force measuring device includes a spring dynamometer, a moving seat and a pusher Pull rod, one end of the push-pull rod is connected with the moving seat, the other end of the push-pull rod is fixed by the fixed seat, sliding wheels are installed at the bottom of the moving seat, and the moving seat slides on the surface of the experimental platform through the sliding wheels, The regulating device includes a fixed platform, a pressure seat and a pressure gauge, and the fixed platform is placed on the surface of the experimental platform, and the pressure gauge includes a connecting plate, a pressure sensor, an AT89C51 single-chip microcomputer, a pressure bearing plate and a display screen, and the pressure bearing The plates are connected together through a connecting plate and a fixed platform, the pressure sensor is installed on the inner surface of the pressure bearing plate, a groove is arranged inside the pressure applying seat, and the fixed platform and the spring force gauge are connected by a metal rod Together, the conversion device includes a rotary table and a test board, the rotary table adopts a polygonal structure, the experimental board is installed on the facet surface of the rotary table, the rotary table is rotated by a rotating shaft, and the fixed seat is fixed On both sides of the middle opening of the experimental platform.
作为本发明一种优选的技术方案,所述推拉杆采用液压杆驱动。As a preferred technical solution of the present invention, the push-pull rod is driven by a hydraulic rod.
作为本发明一种优选的技术方案,所述压力传感器将检测到的压力信号传输到AT89C51单片机,信号经过AT89C51单片机的处理之后显示在显示屏上。As a preferred technical solution of the present invention, the pressure sensor transmits the detected pressure signal to the AT89C51 single-chip microcomputer, and the signal is displayed on the display screen after being processed by the AT89C51 single-chip microcomputer.
作为本发明一种优选的技术方案,所述压力计通过充电锂电池供电。。As a preferred technical solution of the present invention, the pressure gauge is powered by a rechargeable lithium battery. .
作为本发明一种优选的技术方案,所述实验平台底端设置有支撑架,所述支撑架底端连接有防滑橡胶垫。As a preferred technical solution of the present invention, a support frame is provided at the bottom end of the experiment platform, and a non-slip rubber pad is connected to the bottom end of the support frame.
作为本发明一种优选的技术方案,所述实验平台表面设置有中间开口,所述中间开口和实验板大小相同。As a preferred technical solution of the present invention, a middle opening is provided on the surface of the experiment platform, and the size of the middle opening is the same as that of the experiment plate.
作为本发明一种优选的技术方案,若干个所述实验板采用不同摩擦系数的材料制成。As a preferred technical solution of the present invention, the several experimental plates are made of materials with different friction coefficients.
与现有技术相比,本发明的有益效果是:该摩擦力实验教学装置,通过设置测力装置,利用弹簧测力计测量推拉杆在推拉的时候产生的拉力,同时通过设置推拉杆通过液压进行驱动,即可使得移动座通过滑动轮在实验平台移动,同时通过设置调节装置,通过在施压座内部凹槽内加入增重的金属块或者加入水以提高施压座的质量,从而方便验证压力大小对摩擦力的影响,同时通过设置压力计,利用压力传感器检测压力信号,经过AT89C51单片机的处理之后显示在显示屏上即可,从而方便直接观察到压力大小,同时通过设置转换装置,利用旋转轴来转动旋转座,即可将旋转座的不同棱边的实验板进行转换,从而实现不同摩擦系数的材料的转换,从而验证摩擦系数对摩擦力的影响,起到教学效果,该装置不仅可以自由调节实验的时候压力大小,而且便于可以通过不同的摩擦面对学生演示影响摩擦力的因素,方便学生直观的了解摩擦力,达到良好的教学效果。Compared with the prior art, the beneficial effect of the present invention is: the friction experiment teaching device, by setting the force measuring device, uses the spring dynamometer to measure the pulling force generated when the push-pull rod is pushed and pulled, and at the same time, by setting the push-pull rod through the hydraulic pressure By driving, the mobile seat can be moved on the experimental platform through the sliding wheels. At the same time, by setting the adjustment device, adding a weighted metal block or adding water to the inner groove of the pressure seat to improve the quality of the pressure seat, so that it is convenient Verify the influence of the pressure on the friction force. At the same time, by setting the pressure gauge and using the pressure sensor to detect the pressure signal, it can be displayed on the display screen after being processed by the AT89C51 single-chip microcomputer, so that the pressure can be directly observed. At the same time, by setting the conversion device, Use the rotating shaft to rotate the rotating seat, and the experimental boards of different edges of the rotating seat can be converted, so as to realize the conversion of materials with different friction coefficients, thereby verifying the influence of the friction coefficient on the friction force, and having a teaching effect. Not only can the pressure be freely adjusted during the experiment, but also it is convenient for students to demonstrate the factors that affect the friction force through different friction faces, so that students can intuitively understand the friction force and achieve a good teaching effect.
附图说明Description of drawings
图1为本发明结构示意图;Fig. 1 is a structural representation of the present invention;
图2为本发明侧面结构示意图;Fig. 2 is a schematic view of the side structure of the present invention;
图3为本发明压力计工作流程示意图。Fig. 3 is a schematic diagram of the working process of the pressure gauge of the present invention.
图中:1-实验平台;2-测力装置;3-转换装置;4-调节装置;5-支撑架;6-弹簧测力计;7-移动座;8-推拉杆;9-固定座;10-滑动轮;11-固定台;12-施压座;13-压力计;14-连接板;15-压力传感器;16-显示屏;17-AT89C51单片机;18-中间开口;19-承压板;20-凹槽;21-金属杆;22-旋转台;23-实验板;24-防滑橡胶垫。In the figure: 1-experiment platform; 2-force measuring device; 3-converting device; 4-adjusting device; 5-support frame; 6-spring dynamometer; 7-moving seat; 8-push-pull rod; ;10-sliding wheel; 11-fixed platform; 12-pressure seat; 13-pressure gauge; 14-connecting plate; 15-pressure sensor; 16-display screen; Pressing plate; 20-groove; 21-metal rod; 22-rotary table; 23-experiment board; 24-anti-slip rubber pad.
具体实施方式detailed description
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
以下各实施例的说明是参考附图,用以示例本发明可以用以实施的特定实施例。本发明所提到的方向和位置用语,例如「上」、「中」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是参考附加图式的方向和位置。因此,使用的方向和位置用语是用以说明及理解本发明,而非用以限制本发明。The following descriptions of various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented. The terms of direction and position mentioned in the present invention, such as "upper", "middle", "lower", "front", "rear", "left", "right", "inner", "outer", "side ", etc., are only for reference to the orientation and position of the attached drawings. Therefore, the terms of direction and position are used to illustrate and understand the present invention, but not to limit the present invention.
实施例:Example:
如图1至图3所示,本发明提出一种技术方案:一种摩擦力实验教学装置,包括实验平台1、测力装置2、调节装置4和转换装置3,所述测力装置2包括弹簧测力计6、移动座7和推拉杆8,所述推拉杆8一端和移动座7连接在一起,所述推拉杆8另一端通过固定座9进行固定,所述移动座7底端安装有滑动轮10,所述移动座7通过滑动轮10在实验平台1表面滑动,所述调节装置4包括固定台11、施压座12和压力计13,所述固定台11放置在实验平台1表面,所述压力计13包括连接板14、压力传感器15、AT89C51单片机17、承压板19和显示屏16,所述承压板19通过连接板14和固定台11连接在一起,所述压力传感器15安装在承压板19内部表面,所述施压座12内部设置有凹槽20,所述固定台11和弹簧测力计6之间通过金属杆21连接在一起,即可拉动固定台11,在固定台11刚好运动的时候即可测得摩擦力的大小,所述转换装置3包括旋转台22和实验板23,所述旋转台22采用多边形结构,所述实验板23均安装在旋转台22的棱面表面,所述旋转台22通过旋转轴24进行旋转,所述实验平台1表面设置有中间开口18,所述中间开口18和实验板23大小相同,所述固定座9固定在实验平台1的中间开口18两侧,若干个所述实验板23采用不同摩擦系数的材料制成,方便直接转换不同的材料。As shown in Fig. 1 to Fig. 3, the present invention proposes a kind of technical scheme: a kind of friction experiment teaching device, comprises experiment platform 1, force measuring device 2, adjusting device 4 and conversion device 3, and described force measuring device 2 comprises Spring dynamometer 6, moving seat 7 and push-pull rod 8, one end of said push-pull rod 8 is connected with moving seat 7, the other end of said push-pull rod 8 is fixed by fixing seat 9, and said moving seat 7 bottom is installed There are sliding wheels 10, and the moving seat 7 slides on the surface of the experimental platform 1 through the sliding wheels 10. The adjustment device 4 includes a fixed table 11, a pressure seat 12 and a pressure gauge 13, and the fixed table 11 is placed on the experimental platform 1. On the surface, the pressure gauge 13 includes a connection plate 14, a pressure sensor 15, an AT89C51 single-chip microcomputer 17, a pressure bearing plate 19 and a display screen 16, and the pressure bearing plate 19 is connected together by the connection plate 14 and the fixed table 11, and the pressure The sensor 15 is installed on the inner surface of the pressure bearing plate 19, the inside of the pressure applying seat 12 is provided with a groove 20, the fixed platform 11 and the spring force gauge 6 are connected together by a metal rod 21, and the fixed platform can be pulled 11. The friction force can be measured when the fixed table 11 just moves. The conversion device 3 includes a rotary table 22 and an experimental board 23. The rotary table 22 adopts a polygonal structure, and the experimental board 23 is installed on the The facet surface of the rotary table 22, the rotary table 22 is rotated by the rotating shaft 24, the surface of the experimental platform 1 is provided with an intermediate opening 18, the intermediate opening 18 is the same size as the experimental plate 23, and the fixed seat 9 is fixed On both sides of the middle opening 18 of the test platform 1 , several test plates 23 are made of materials with different friction coefficients, which is convenient for direct conversion of different materials.
本发明的主要特点在于,所述推拉杆8采用液压杆驱动;所述压力传感器15将检测到的压力信号传输到AT89C51单片机17,信号经过AT89C51单片机17的处理之后显示在显示屏16上;所述压力计13通过充电锂电池供电;所述实验平台1底端设置有支撑架5,所述支撑架5底端连接有防滑橡胶垫24,起到防滑作用。The main features of the present invention are that the push-pull rod 8 is driven by a hydraulic rod; the pressure sensor 15 transmits the detected pressure signal to the AT89C51 single-chip microcomputer 17, and the signal is displayed on the display screen 16 after being processed by the AT89C51 single-chip microcomputer 17; The pressure gauge 13 is powered by a rechargeable lithium battery; the bottom end of the experimental platform 1 is provided with a support frame 5, and the bottom end of the support frame 5 is connected with an anti-slip rubber pad 24 to play an anti-slip effect.
具体实施方式及优点:该摩擦力实验教学装置,通过设置测力装置,利用弹簧测力计测量推拉杆在推拉的时候产生的拉力,同时通过设置推拉杆通过液压进行驱动,即可使得移动座通过滑动轮在实验平台移动,同时通过设置调节装置,通过在施压座内部凹槽内加入增重的金属块或者加入水以提高施压座的质量,从而方便验证压力大小对摩擦力的影响,同时通过设置压力计,利用压力传感器检测压力信号,经过AT89C51单片机的处理之后显示在显示屏上即可,从而方便直接观察到压力大小,同时通过设置转换装置,利用旋转轴来转动旋转座,即可将旋转座的不同棱边的实验板进行转换,从而实现不同摩擦系数的材料的转换,从而验证摩擦系数对摩擦力的影响,起到教学效果,该装置不仅可以自由调节实验的时候压力大小,而且便于可以通过不同的摩擦面对学生演示影响摩擦力的因素,方便学生直观的了解摩擦力,达到良好的教学效果。Specific implementation and advantages: the friction experiment teaching device, by setting the force measuring device, using the spring dynamometer to measure the pulling force generated by the push-pull rod when pushing and pulling, and at the same time setting the push-pull rod to drive through hydraulic pressure, can make the mobile seat The sliding wheel moves on the experimental platform, and at the same time, by setting the adjustment device, adding a weighted metal block or adding water to the inner groove of the pressure seat to improve the quality of the pressure seat, so as to facilitate the verification of the influence of pressure on friction At the same time, by setting the pressure gauge and using the pressure sensor to detect the pressure signal, it can be displayed on the display screen after being processed by the AT89C51 single-chip microcomputer, so that it is convenient to directly observe the pressure. The experimental boards with different edges of the rotating base can be converted, so as to realize the conversion of materials with different friction coefficients, so as to verify the influence of friction coefficient on friction force, and play a teaching effect. The device can not only freely adjust the pressure during the experiment It is convenient for students to demonstrate the factors that affect the friction force through different friction faces, so that students can intuitively understand the friction force and achieve a good teaching effect.
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
- A kind of 1. frictional force experimental teaching unit, it is characterised in that:Including experiment porch (1), device for measuring force (2), adjusting means (4) and conversion equipment (3), the device for measuring force (2) includes weight beam (6), Mobile base (7) and pull bar (8), described to push away Pull bar (8) one end and Mobile base (7) are linked together, and pull bar (8) other end is fixed by fixed seat (9), institute State Mobile base (7) bottom and movable pulley (10) is installed, the Mobile base (7) is by movable pulley (10) on experiment porch (1) surface Slide, the adjusting means (4) includes fixed station (11), pressure seat (12) and pressure gauge (13), and the fixed station (11) is placed On experiment porch (1) surface, the pressure gauge (13) includes connecting plate (14), pressure sensor (15), AT89C51 single-chip microcomputers (17), bearing plate (19) and display screen (16), the bearing plate (19) are connected to one by connecting plate (14) and fixed station (11) Rise, the pressure sensor (15) is arranged on bearing plate (19) interior surface, and the pressure seat (12) is internally provided with groove (20), linked together between the fixed station (11) and weight beam (6) by metallic rod (21), the conversion equipment (3) turntable (22) and brassboard (23) are included, the turntable (22) uses polygonized structure, and the brassboard (23) is pacified Mounted in the faceted pebble surface of turntable (22), the turntable (22) is rotated by rotary shaft (24), and the fixed seat (9) is solid It is scheduled on middle opening (18) both sides of experiment porch (1).
- A kind of 2. frictional force experimental teaching unit according to claim 1, it is characterised in that:The pull bar (8) uses Hydraulic stem drives.
- A kind of 3. frictional force experimental teaching unit according to claim 1, it is characterised in that:The pressure sensor (15) The pressure signal detected is transferred to AT89C51 single-chip microcomputers (17), signal is after the processing of AT89C51 single-chip microcomputers (17) It is shown on display screen (16).
- A kind of 4. frictional force experimental teaching unit according to claim 1, it is characterised in that:The pressure gauge (13) passes through Charged lithium cells are powered.
- A kind of 5. frictional force experimental teaching unit according to claim 1, it is characterised in that:Experiment porch (1) bottom End is provided with support frame (5), and support frame as described above (5) bottom is connected with anti-skid rubber cushion (24).
- A kind of 6. frictional force experimental teaching unit according to claim 1, it is characterised in that:Experiment porch (1) table Face is provided with middle opening (18), and the middle opening (18) is identical with brassboard (23) size.
- A kind of 7. frictional force experimental teaching unit according to claim 1, it is characterised in that:Several described brassboards (23) it is made of the material of different coefficients of friction.
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CN201710719093.7A CN107578677A (en) | 2017-08-21 | 2017-08-21 | A teaching device for friction experiment |
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Cited By (7)
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CN107993535A (en) * | 2018-02-01 | 2018-05-04 | 孙鹏宇 | A kind of physical study friction force demonstration device |
CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
CN109036018A (en) * | 2018-09-12 | 2018-12-18 | 郑云天 | A kind of physical mechanics apparatus for demonstrating |
CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
CN110044723A (en) * | 2019-05-08 | 2019-07-23 | 苏州昇特智能科技有限公司 | A kind of Visualized Flexible material bending performance measuring device |
CN110631855A (en) * | 2019-10-31 | 2019-12-31 | 东莞隽思印刷有限公司 | Poker fan opening detection method and detection device |
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CN205609072U (en) * | 2016-02-29 | 2016-09-28 | 刘毅 | Physical teaching is with probing frictional force presentation device |
CN205827736U (en) * | 2016-04-07 | 2016-12-21 | 刘旭然 | A kind of high school physics friction force demonstration device |
CN206194214U (en) * | 2016-07-27 | 2017-05-24 | 李世斌 | Many slides of physical teaching friction inclined plane device |
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Patent Citations (3)
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CN205609072U (en) * | 2016-02-29 | 2016-09-28 | 刘毅 | Physical teaching is with probing frictional force presentation device |
CN205827736U (en) * | 2016-04-07 | 2016-12-21 | 刘旭然 | A kind of high school physics friction force demonstration device |
CN206194214U (en) * | 2016-07-27 | 2017-05-24 | 李世斌 | Many slides of physical teaching friction inclined plane device |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107993535A (en) * | 2018-02-01 | 2018-05-04 | 孙鹏宇 | A kind of physical study friction force demonstration device |
CN108480054A (en) * | 2018-02-10 | 2018-09-04 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
CN108480054B (en) * | 2018-02-10 | 2019-12-03 | 中国矿业大学 | A kind of adjustable powder electric separation environmental protection collection device of wall friction material rotation |
CN109036018A (en) * | 2018-09-12 | 2018-12-18 | 郑云天 | A kind of physical mechanics apparatus for demonstrating |
CN109473018A (en) * | 2018-12-29 | 2019-03-15 | 路依丹 | A kind of high school physics study apparatus for demonstrating |
CN110044723A (en) * | 2019-05-08 | 2019-07-23 | 苏州昇特智能科技有限公司 | A kind of Visualized Flexible material bending performance measuring device |
CN110631855A (en) * | 2019-10-31 | 2019-12-31 | 东莞隽思印刷有限公司 | Poker fan opening detection method and detection device |
CN111768661A (en) * | 2020-08-03 | 2020-10-13 | 泉州台商投资区源平信息技术有限公司 | Workstation is used in accounting teaching |
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