CN2373854Y - Combined type mechanics demonstration platform - Google Patents
Combined type mechanics demonstration platform Download PDFInfo
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- CN2373854Y CN2373854Y CN 99212971 CN99212971U CN2373854Y CN 2373854 Y CN2373854 Y CN 2373854Y CN 99212971 CN99212971 CN 99212971 CN 99212971 U CN99212971 U CN 99212971U CN 2373854 Y CN2373854 Y CN 2373854Y
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Abstract
The utility model relates to a combined type mechanics platform, which is characterized in that the utility model comprises a main platform of which one end is hinged with a bracket and the other end is hinged with the bracket and an auxiliary platform. Both side edges of the main platform and the auxiliary platform are respectively provided with a spacing plate on which a chute is arranged. One side edge of the main platform is provided with a scale; the ends of the main platform and the auxiliary platform are respectively provided with a platform composed of a connecting hole for fixing a fixed pulley bracket; through folding and transforming the position of a platform plate, an inertia car, a tackle, a timing vehicle, a friction plate, an inertia plate, a pulley, etc. are arranged on the platform, and thus, all experiments in the physical mechanics of the secondary school can be completed. The utility model has the advantages that the structure is simple, the function is complete, the operation meets the teaching specification, the demonstration is visual, which is in favor of the student to understand and master the knowledge, etc.
Description
A kind of combined type mechanics platform belongs to teaching and experiment equipment.
Mechanics is the physical important component part in middle school, and the Experiments of Machanics that teaching material requires are more, but the Experiments of Machanics instrument that satisfies the teaching material requirement at present seldom, and function singleness, directly influences teaching efficiency.
The purpose of this utility model is to provide a kind of combined type mechanics platform, and its landing slab can fold as required and shift one's position, and it is simple in structure, and operation meets teaching norm, and demonstrating visual is multiple functional, contains whole experiments of general mechanics of high school.
The purpose of this utility model is realized by following technical scheme: a kind of combined type mechanics platform, it is characterized in that: it comprises by main platform (1), one end of main platform (1) is hinged by bearing pin and support (5), the other end of main platform (1) is hinged by bearing pin and auxiliary platform (2) and support (3), both sides rim at main platform (1) and auxiliary platform (2) is provided with limiting plate (6), the last plane of limiting plate (6) is slideway (7), the outside at a lateral margin of main platform (1) is provided with scale (4), be provided with the platform that connecting hole (8) that fixed pulley (20) support is installed is formed in the upper end of the both ends of main platform (1) and auxiliary platform (2), by leading, auxiliary platform (1), (2) inertial platform (16) that is equipped with of joint portion, end at main platform (1) is equipped with inertia cycle, inertia cycle A, on the B, the following setting, inertia cycle is by the car body (17) of band wheel, being built-in with wind spring (18) at car body (17) forms, the fixed pulley (20) of belt supporting frame is housed in the connecting hole (8) of auxiliary platform (2), the hook of inertia cycle B (19) is connected with rope, and rope is walked around the object inertia apparatus for demonstrating that fixed pulley (20) and counterweight (23) connect and compose; By on main platform (1), being equipped with inertia cycle, the fixed pulley (20) of belt supporting frame is housed respectively in the connecting hole (8) of end connecting hole (8) of main platform (1) and auxiliary platform (2), the two ends of inertia cycle are connected with rope respectively, rope is walked around fixed pulley (20) respectively, the balance between two forces apparatus for demonstrating that two fixed pulleys (20) and counterweight (23) connect and compose; By two inertia cycle A, B being equipped with at main platform (1) two ends, action and reaction power and momentum conservation apparatus for demonstrating that the wind spring of one of them inertia cycle (18) and another inertia cycle connect and compose; By on two slideways (7) of main platform (1), being equipped with coaster, coaster is by the car frame (21) of band bent plate (22), in car frame (21), be provided with pulley (24), pulley (24) is by axle and the hinged composition of car frame (21), bent plate (22) bottom in car frame (21) is mounted with counterweight (23), coaster is connected with rope, and rope is walked around the fixed pulley (20) on auxiliary platform (2), and the quality that the power that connects and composes with counterweight (23) equals object multiply by the apparatus for demonstrating of acceleration; By be equipped with friction plate (26) on main platform (1), friction plate (26) two sides is the different plate face of friction factor, friction force and character of surface and pressure dependence apparatus for demonstrating that friction block (25) places the two sides of friction plate (26) to constitute; By auxiliary platform (2) is upwards rolled over an angle, on auxiliary platform (2), be equipped with inertia cycle, with the front of friction plate (26), or reverse side places main platform (1) to go up the object that constitutes is done linear uniform motion when non-resistance apparatus for demonstrating; By being converted into the upright position under the auxiliary platform (2), support (5) is converted into horizontal level, be equipped with inertia cycle on main platform (1), inertia cycle is connected with rope, and rope is walked around the presentation device of theory of the merit that fixed pulley (20) and spring balance (27) on auxiliary platform (2) connect and compose; By support (5) is converted into horizontal level; On main platform (1), be equipped with the timing car, the timing car is made up of the car body (13) of band wheel, the time switch (9) that is electrically connected with stopwatch (12), time zero switch (10), dry-reed tube switch (11), any 2 A on main platform (1), B place are equipped with magnetic patch (14) respectively, locate be equipped with the lining equal speed device of iron block (15) formation that with magnetic patch (14) magnetic be connected at the bottom surface of main platform (1), A, the B at magnetic patch (14) place at 2; By with the platform vertically-arranged, auxiliary platform (2) and support (3) are in a horizontal position, and the middle part of scale (4) is articulated on the main platform (1), counterweight (23) are mounted on the lever balance apparatus for demonstrating that constitutes on the diverse location at scale (4) two ends; By the platform master is put, auxiliary platform (2) and support (3) are in a horizontal position, the support of fixed pulley (20) is fixed on the support (5) of main platform (1), be provided with travelling block (28) in the lower end of fixed pulley (20), the hook (29) that rope lies in fixed pulley (20) support is gone up and respectively on movable and fixed pulley (28), (20), is equipped with the pulley blocks mechanical efficiency apparatus for demonstrating that counterweight (23) constitutes in the hook (30) of travelling block (28) support.
The advantage applies of mechanics platform of the present utility model exists:
1, platform is hinged by main platform, auxiliary platform and support and forms, can be folding according to the experiment needs;
2, on platform, pass through to place inertia cycle, inertial platform, friction plate, piece, coaster, pulley, test tools such as the car that clocks just can be finished whole experiments of mechanics of high school;
3, combined type mechanics platform is simple in structure, and operation meets teaching norm, and the understanding of student to knowledge is convenient in demonstrating visual.
Utilize embodiment shown in the drawings to be described further below to this reality is novel.
Fig. 1 is the platform structure schematic perspective view of combined type mechanics platform.
Fig. 2 is an A-A cross-sectional schematic among Fig. 1.
Fig. 3 is provided with the structural upright synoptic diagram of object inertia apparatus for demonstrating for combined type mechanics platform.
Fig. 4 is provided with the structural upright synoptic diagram of balance between two forces apparatus for demonstrating for combined type mechanics platform.
Fig. 5 is provided with the structural upright synoptic diagram of action and reaction power and momentum conservation apparatus for demonstrating for combined type mechanics platform.
Fig. 6 is provided with the structural upright synoptic diagram that quality that power equals object multiply by the acceleration apparatus for demonstrating for combined type mechanics platform.
Fig. 7 is provided with the structural upright synoptic diagram of the relation demonstration device of friction force and character of surface and pressure for combined type mechanics platform.
Fig. 8 is provided with object is made the apparatus for demonstrating of linear uniform motion when non-resistance structural upright synoptic diagram for combined type mechanics platform.
Fig. 9 is provided with the structural upright synoptic diagram of the presentation device of theory of merit for combined type mechanics platform.
Figure 10 is provided with the structural upright synoptic diagram of the equal speed device of lining for combined type mechanics platform.
Figure 11 is the combined type mechanics platform bassinet structure schematic perspective view that clocks.
Figure 12 is provided with the structural upright synoptic diagram of lever balance apparatus for demonstrating for combined type mechanics platform.
Figure 13 is provided with the structural upright synoptic diagram of pulley blocks mechanical efficiency apparatus for demonstrating for combined type mechanics platform.
With reference to Fig. 1 and 2, platform is by main platform (1), one end of main platform (1) is hinged by bearing pin and support (5), the other end of main platform (1) is hinged by bearing pin and auxiliary platform (2) and support (3), both sides rim at main platform (1) and auxiliary platform (2) is provided with limiting plate (6), the last plane of limiting plate (6) is slideway (7), the outside at a lateral margin of main platform (1) is provided with scale (4), be screwed chi plate (19) in the scale (4), be equipped with connecting hole (8) composition that fixed pulley (20) support is installed at the both ends of main platform (1) and the upper end of auxiliary platform (2).Whole platform is aluminium alloy extrusions, and scale (4) also is an aluminium alloy extrusions.
With reference to Fig. 3, object inertia apparatus for demonstrating is set on platform, this device is by the inertial platform (16) that is equipped with in major and minor platform (1), (2) joint portion, end at main platform (1) is equipped with inertia cycle, the upper and lower setting of inertia cycle A, B, inertia cycle is by the car body (17) of band wheel, be built-in with wind spring (18) at car body (17), wind spring (18) can be made of steel tape and form, the fixed pulley (20) of belt supporting frame is housed in the connecting hole (8) of auxiliary platform (2), inertia cycle B is connected with rope, and rope is walked around fixed pulley (20) and connected and composed with counterweight (23).Under the action of gravity of counterweight (23), inertia cycle B and inertia cycle A be uniform motion together, when inertia cycle B meets that inertial platform (16) is obstructed and during stop motion, inertia cycle A still goes up motion with original movement velocity at inertial platform (16); The wind spring (18) of extracting inertia cycle B out hangs on pulley (20) support, unclamps inertia cycle B, and inertia cycle B accelerated motion is located to inertial platform (16), and inertia cycle A falls from inertia cycle B at initial position.
With reference to Fig. 4, the balance between two forces apparatus for demonstrating is set on platform, this device is by the inertia cycle that is equipped with on main platform (1), the fixed pulley (20) of belt supporting frame is housed respectively in the connecting hole (8) of end connecting hole (8) of main platform (1) and auxiliary platform (2), the two ends of inertia cycle are connected with rope respectively, rope is walked around fixed pulley (20) respectively, and two fixed pulleys (20) connect and compose with counterweight (23).Have only two ends counterweight quality to equate, two ropes point-blank, inertia cycle just remains static.
With reference to Fig. 5, action and reaction power and momentum conservation apparatus for demonstrating are set on platform, this device is by two inertia cycle A, B being equipped with at platform (1) two ends, and the wind spring of one of them inertia cycle (18) connects and composes with another inertia cycle.With the hands draw back two inertia cycles, loose one's grip simultaneously, two inertia cycle move toward one another, and collide in the centre, the effect of explanation of force is mutual; If wherein inertia cycle A motion is earlier moved behind the inertia cycle B, then inertia cycle A collides inertia cycle B, and two inertia cycle A, B are to same direction (that is: the direction of motion of inertia cycle A) motion, if two hands unclamp simultaneously, two inertia cycle A, B collide in the centre, and stop immediately.
With reference to Fig. 6, the quality that the power that is provided with on platform equals object multiply by the apparatus for demonstrating of acceleration, this device is by be equipped with coaster on two slideways (7) of main platform (1), coaster is by the car frame (21) of band bent plate (22), in car frame (21), be provided with pulley (24), pulley (24) is by axle and the hinged composition of car frame (21), bent plate (22) bottom of car frame (21) is mounted with counterweight (23), coaster is connected with rope, and the fixed pulley (20) that rope is walked around on auxiliary platform (2) connects and composes with counterweight (23).Two coaster quality equate that the gravity pulling coaster by counterweight (23) changes quality that hangs over supratrochlear counterweight (23) and the pulling force that hangs over the counterweight (23) of fixed pulley (20) rope one end and demonstrates Newton second law: F=ma.
With reference to Fig. 7, the relation demonstration device of friction force and character of surface and pressure is set on platform, this device is by be equipped with friction plate (26) on main platform (1), friction plate (26) one side is a cotton flannel surface, another side is a wood plate surface, that is: two sides friction factor difference, friction block (25) can place the two sides of friction plate (26) to constitute.With spring balance (27) by rope at the uniform velocity drawing friction piece (25) can record friction force size under this state, under the certain situation of surface state, by going up the relation that plus-minus counterweight (23) comes demonstration friction and pressure at friction block (25); Under the certain situation of pressure, come demonstration friction and surface state relation by the different friction surface of conversion (aluminum alloy surface of platform, wood plate surface and cotton flannel surface).
With reference to Fig. 8, auxiliary platform (2) is gone up angle of folding, when being equipped with object on the platform, make the apparatus for demonstrating of linear uniform motion at non-resistance, this device is that inertia cycle is placed on the auxiliary platform (2), on main platform (1), do not place friction plate (26), or positive, or reverse side is placed friction plate (26) formation.When platform is aluminum alloy surface when more smooth, inertia cycle sliding far; When inserting friction plate (26) for wood plate surface, it is far away that inertia cycle is slided; When friction plate (26) was cotton flannel surface, it is nearer that inertia cycle is slided.Above-mentioned state is compared, if surperficial non-resistance, then inertia cycle is done linear uniform motion with original speed.That is: the demonstration Newton first law.
With reference to Fig. 9, support (5) is converted into horizontal level, auxiliary platform is converted into the upright position under (2), on platform, be equipped with the presentation device of theory of merit, this device is equipped with inertia cycle on main platform (1), inertia cycle is connected with rope, and the fixed pulley (20) that rope is walked around on auxiliary platform (2) connects and composes with spring balance (27).At the uniform velocity spur inertia cycle with spring balance (27), record tensile force f, measure the height H of the chamfer length L and the auxiliary platform (2) of main platform (1), reach a conclusion: GH=FL, if the inclined-plane of conversion master platform (1) and the angle of auxiliary platform (2), arbitrary height H can be obtained, the principle of merit can be from multi-group data, verified.
With reference to Figure 10 and 11, support (5) is converted into horizontal level, on platform, be equipped with the equal speed device of lining, this device is to be equipped with the timing car on main platform (1), the timing car is made up of the car body (13) of band wheel, the time switch (9) that is electrically connected with stopwatch (12), time zero switch (10), dry-reed tube switch (11), any 2 A on main platform (1), B place are equipped with magnetic patch (14) respectively, locate be equipped with iron block (15) formation that with magnetic patch (14) magnetic be connected at the bottom surface of main platform (1), A, the B at magnetic patch (14) place at 2.Allow the car that tests the speed freely glide via the beveled top end of main platform (1), during via the A point at magnetic patch (14) place, start dry-reed tube switch (11) and the switch that clocks (9), begin to clock, during via the B point at magnetic patch (14) place, start dry-reed tube switch (11) once more, the stopwatch (12) that stops being electrically connected with switch that clocks is noted the time t of car via A, the required usefulness of B distance between two points S that clock automatically, and A, B distance between two points S can be by directly reading on main platform (1) the side scale (4), according to formula: average velocity V=S/t.If the distance of 2 of A, B is close, the used time is short more, more near the instantaneous velocity of inertia cycle.
With reference to Figure 12, with main platform (1) vertically-arranged, auxiliary platform (2) and support (3) are in a horizontal position, and are equipped with the lever balance apparatus for demonstrating on platform, this device is that scale (4) is articulated on the main platform (1), counterweight (23) is mounted on the diverse location at scale (4) two ends to constitute.Can free adjustment arm of force length, numerical value can directly be read by scale (4), and power can be obtained by counterweight.
With reference to Figure 13, with main platform (1) vertically-arranged, auxiliary platform (2) and support (3) are in a horizontal position, on platform, be equipped with pulley blocks mechanical efficiency apparatus for demonstrating, this device is that the support with fixed pulley (20) is fixed on the support (5) of main platform (1), be provided with travelling block (28) in the lower end of fixed pulley (20), the hook (29) that rope lies in fixed pulley (20) support is gone up and respectively on movable and fixed pulley (28), (20), is equipped with counterweight (23) and constitutes in the hook (30) of travelling block (28) support.The displacement S of the hoisting depth H of weight G and rope free end tensile force f can directly read from scale (4).Obtain according to mechanical efficiency formula η=GH/FS * %.The demonstration travelling block is laborsaving, hangs up 3 counterweights identical in quality on travelling block, at 1 counterweight of rope free end extension homogenous quantities, can see, 1 counterweight of rope promotes 3 counterweights, promptly economizes 2/3 power.
Claims (1)
1, a kind of combined type mechanics platform, it is characterized in that: it comprises by main platform (1), one end of main platform (1) is hinged by bearing pin and support (5), the other end of main platform (1) is hinged by bearing pin and auxiliary platform (2) and support (3), both sides rim at main platform (1) and auxiliary platform (2) is provided with limiting plate (6), the last plane of limiting plate (6) is slideway (7), the outside at a lateral margin of main platform (1) is provided with scale (4), be provided with the platform that connecting hole (8) that fixed pulley (20) support is installed is formed in the upper end of the both ends of main platform (1) and auxiliary platform (2), by leading, auxiliary platform (1), (2) inertial platform (16) that is equipped with of joint portion, end at main platform (1) is equipped with inertia cycle, inertia cycle A, on the B, the following setting, inertia cycle is by the car body (17) of band wheel, being built-in with wind spring (18) at car body (17) forms, the fixed pulley (20) of belt supporting frame is housed in the connecting hole (8) of auxiliary platform (2), the hook of inertia cycle B (19) is connected with rope, and rope is walked around the object inertia apparatus for demonstrating that fixed pulley (20) and counterweight (23) connect and compose; By on main platform (1), being equipped with inertia cycle, the fixed pulley (20) of belt supporting frame is housed respectively in the connecting hole (8) of end connecting hole (8) of main platform (1) and auxiliary platform (2), the two ends of inertia cycle are connected with rope respectively, rope is walked around fixed pulley (20) respectively, the balance between two forces apparatus for demonstrating that two fixed pulleys (20) and counterweight (23) connect and compose; By two inertia cycle A, B being equipped with at main platform (1) two ends, action and reaction power and momentum conservation apparatus for demonstrating that the wind spring of one of them inertia cycle (18) and another inertia cycle connect and compose; By on two slideways (7) of main platform (1), being equipped with coaster, coaster is by the car frame (21) of band bent plate (22), in car frame (21), be provided with pulley (24), pulley (24) is by axle and the hinged composition of car frame (21), bent plate (22) bottom in car frame (21) is mounted with counterweight (23), coaster is connected with rope, and rope is walked around the fixed pulley (20) on auxiliary platform (2), and the quality that the power that connects and composes with counterweight (23) equals object multiply by the apparatus for demonstrating of acceleration; By be equipped with friction plate (26) on main platform (1), friction plate (26) two sides is the different plate face of friction factor, friction force and character of surface and pressure dependence apparatus for demonstrating that friction block (25) places the two sides of friction plate (26) to constitute; By auxiliary platform (2) is upwards rolled over an angle, on auxiliary platform (2), be equipped with inertia cycle, with the front of friction plate (26), or reverse side places main platform (1) to go up the object that constitutes is done linear uniform motion when non-resistance apparatus for demonstrating; By being converted into the upright position under the auxiliary platform (2), support (5) is converted into horizontal level.Be equipped with inertia cycle on main platform (1), inertia cycle is connected with rope, and rope is walked around the presentation device of theory of the merit that fixed pulley (20) and spring balance (27) on auxiliary platform (2) connect and compose; By support (5) is converted into horizontal level, on main platform (1), be equipped with the timing car, the timing car is made up of the car body (13) of band wheel, the time switch (9) that is electrically connected with stopwatch (12), time zero switch (10), dry-reed tube switch (11), any 2 A on main platform (1), B place are equipped with magnetic patch (14) respectively, locate be equipped with the lining equal speed device of iron block (15) formation that with magnetic patch (14) magnetic be connected at the bottom surface of main platform (1), A, the B at magnetic patch (14) place at 2; By with the platform vertically-arranged, auxiliary platform (2) and support (3) are in a horizontal position, and the middle part of scale (4) is articulated on the main platform (1), counterweight (23) are mounted on the lever balance apparatus for demonstrating that constitutes on the diverse location at scale (4) two ends; By the platform master is put, auxiliary platform (2) and support (3) are in a horizontal position, the support of fixed pulley (20) is fixed on the support (5) of main platform (1), be provided with travelling block (28) in the lower end of fixed pulley (20), the hook (29) that rope lies in fixed pulley (20) support is gone up and respectively on movable and fixed pulley (28), (20), is equipped with the pulley blocks mechanical efficiency apparatus for demonstrating that counterweight (23) constitutes in the hook (30) of travelling block (28) support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212971 CN2373854Y (en) | 1999-06-08 | 1999-06-08 | Combined type mechanics demonstration platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99212971 CN2373854Y (en) | 1999-06-08 | 1999-06-08 | Combined type mechanics demonstration platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373854Y true CN2373854Y (en) | 2000-04-12 |
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ID=34005512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99212971 Expired - Fee Related CN2373854Y (en) | 1999-06-08 | 1999-06-08 | Combined type mechanics demonstration platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373854Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021234A (en) * | 2011-09-28 | 2013-04-03 | 陈付振 | Multi-angle inclined surface researching machine |
| CN103578330A (en) * | 2012-07-27 | 2014-02-12 | 郭茂清 | All-purpose friction force exploration instrument |
| CN104050851A (en) * | 2014-07-08 | 2014-09-17 | 崔春枝 | Teaching inclined surface |
| CN104112382A (en) * | 2013-04-22 | 2014-10-22 | 艾迪技术创新私人有限公司 | Physical experiment kit relevant to force and motion |
| CN107689183A (en) * | 2017-08-31 | 2018-02-13 | 苏赫 | One kind of multiple Experiments of Machanics apparatus for demonstrating |
-
1999
- 1999-06-08 CN CN 99212971 patent/CN2373854Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021234A (en) * | 2011-09-28 | 2013-04-03 | 陈付振 | Multi-angle inclined surface researching machine |
| CN103578330A (en) * | 2012-07-27 | 2014-02-12 | 郭茂清 | All-purpose friction force exploration instrument |
| CN103578330B (en) * | 2012-07-27 | 2016-01-20 | 郭茂清 | Friction force exploring instrument |
| CN104112382A (en) * | 2013-04-22 | 2014-10-22 | 艾迪技术创新私人有限公司 | Physical experiment kit relevant to force and motion |
| CN104050851A (en) * | 2014-07-08 | 2014-09-17 | 崔春枝 | Teaching inclined surface |
| CN107689183A (en) * | 2017-08-31 | 2018-02-13 | 苏赫 | One kind of multiple Experiments of Machanics apparatus for demonstrating |
| CN107689183B (en) * | 2017-08-31 | 2020-06-19 | 苏赫 | Multiple mechanics experiment presentation device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |