CN209560813U - A kind of high school physics friction force demonstration device - Google Patents
A kind of high school physics friction force demonstration device Download PDFInfo
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- CN209560813U CN209560813U CN201920075983.3U CN201920075983U CN209560813U CN 209560813 U CN209560813 U CN 209560813U CN 201920075983 U CN201920075983 U CN 201920075983U CN 209560813 U CN209560813 U CN 209560813U
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- fixedly connected
- movable plate
- engaging lug
- firm banking
- angle
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Abstract
The utility model discloses a kind of high school physics friction force demonstration devices, belong to teaching aid technical field.A kind of high school physics friction force demonstration device, including firm banking and movable plate, firm banking upper surface is fixedly connected with engaging lug, shaft is rotatably connected on engaging lug, movable plate is fixedly connected with shaft, and movable plate is flexibly connected by shaft and engaging lug with firm banking, is also connected with angle indicating mechanism on engaging lug lateral wall, it is provided with sliding slot on the side wall of firm banking, is connected with height adjustment mechanism on sliding slot；Firm banking upper surface is provided with time set far from engaging lug one end, and time set includes time display screen, and on the fixed base, time display screen side is fixedly connected with start-stop button and reset button for time display screen insertion installation；The utility model effectively solves the problems, such as that existing design friction force demonstration mode is more single and data record work is more troublesome while test result error is larger.
Description
Technical field
The utility model relates to teaching aid technical field, specially a kind of high school physics friction force demonstration device.
Background technique
Physics is to study the subject of the motion of matter most typically rule and substance basic structure, as taking the lead for natural science
Subject, physics research become greatly to universe, as low as all substances such as elementary particle most basic forms of motion and rule
The Research foundation of other each natural branch of science, its theoretical construct make full use of mathematics as oneself working language, with
It tests as the sole criterion for examining theoretical correctness, it is a current most accurate natural science subject；Frictional force is high
One of middle main knowledge point of Physics Classroom, teacher is typically necessary by some teaching aids on classroom and shows force of sliding friction
Mechanics Phenomenon, therefore design a kind of high school physics friction force demonstration device and just seem and be highly desirable.
Current high school physics friction force demonstration device already existing on the market, friction force demonstration mode are often more single
One, a variety of frictional force situations can not be demonstrated, while existing design is during friction force demonstration, data record work compared with
It will affect the record of data for the design of trouble, while experiment equipment itself, to can have an impact to the result of test.
Utility model content
1, the technical problems to be solved in the utility model
The purpose of this utility model is to provide a kind of high school physics friction force demonstration devices, to solve above-mentioned background technique
The problem of middle proposition:
(1) the more single problem of existing design friction force demonstration mode；
(2) problem that the work of existing design data record is more troublesome while test result error is larger.
2, technical solution
To achieve the above object, the utility model provides the following technical solutions:
A kind of high school physics friction force demonstration device, including firm banking and movable plate, the firm banking upper surface are solid
Surely it is connected with engaging lug, shaft is rotatably connected on the engaging lug, the movable plate is fixedly connected with shaft, the movable plate
It is flexibly connected by shaft and engaging lug with firm banking, is also connected with angle indicating mechanism on the engaging lug lateral wall, institute
It states and is provided with sliding slot on the side wall of firm banking, be connected with height adjustment mechanism on the sliding slot；The firm banking upper surface
Engaging lug one end is provided with time set, the time set includes time display screen, the time display screen insertion
On the fixed base, the time display screen side is fixedly connected with start-stop button and reset button for installation；On the movable plate
One end close to engaging lug is fixedly connected with baffle, and touch switch, the touch switch are fixedly connected on the baffle
Match with time set, detachable friction plate is also fixedly installed on the movable plate, is arranged on the detachable friction plate
There is measurement sliding block, lightweight rope is connected on the measurement sliding block, the lightweight rope is connected to fixed pulley far from measurement sliding block one end
In mechanism.
Preferably, the angle indicating mechanism includes angled instruction disk and angle indicator, and the angle indicates disk and company
Lug lateral wall is fixedly connected, and is fixedly connected with angle index line on the edge of angle instruction disk, the angle indicator with
Shaft is fixedly connected, and clearly can intuitively be seen by angle indicating mechanism and is formed by angle between movable plate and firm banking
Degree, the record for data of being more convenient for and the calculating to frictional force.
Preferably, the height adjustment mechanism includes vertical rod, and the vertical rod is slidably connected with sliding slot, described vertical
Spiral is connected with clamping screw on bar, is provided with above the vertical rod through slot, far from engaging lug on the movable plate side wall
One end is fixedly connected with spacer pin, and the limit spacer pin is slidably connected with through slot, fixed on the edge of the vertical rod to connect
It is connected to altitude scale line, it is described that height instruction block is also slidably connected on slot, in use, clamping screw is unscrewed, then
According to demonstration requirements of one's work, movable plate and firm banking are adjusted to required angle against angle indicating mechanism, or
Against the altitude scale line on vertical rod, push on the height instruction block to suitable height on slot, in adjusting activity
When plate or promotion height instruction block, vertical rod can be on the chute to mobile, the spacer pin meeting close to the direction of angle indicating mechanism
It moves up, after being finished to angle or height adjustment, clamping screw is screwed, so that movable plate can be consolidated in slot
Be scheduled in required angle or height, operate it is more easy, easily facilitate data record and subsequent calculating.
Preferably, the measurement sliding block includes block, and the block upper surface insertion is equipped with pulling force display screen, described
Pull ring is fixedly connected on the side wall of block, the pull ring is also fixedly connected with chest expander, and the chest expander is fixedly mounted on block
Inside, existing design is all often then to pull sliding block with rope by hanging chest expander on sliding block on the market, into
And frictional force is measured by pulling force, but since there is chest expander itself certain weight can not ignore, it is existing to set
Meter data in measurement process can have biggish error, and chest expander is fixedly mounted on the inside of block by the design, pulling force
The weight of device is counted in the weight of entire measurement sliding block, ensure that the accuracy of measurement data, while being arranged in block upper surface
Pulling force display screen easily facilitate user pulling force data read and recorded.
Preferably, the fixed pulley mechanism includes mounting blocks and pulley, and the mounting blocks are fixed with movable plate upper surface
Connection, the pulley and mounting blocks are rotatablely connected, and the lightweight rope is intertwined and connected on pulley, the drawing on pulley and measurement sliding block
Ring is in same horizontal line, ensure that user when pulling lightweight rope, to the horizontal force that measurement sliding block applies, preferably protects
The accuracy of friction measurement is demonstrate,proved.
3, beneficial effect
(1) movable plate of the utility model is rotatablely connected by shaft and firm banking, while passing through angle indicating mechanism
With height adjustment mechanism can angle to movable plate and height be adjusted, can be according to need when carrying out friction force demonstration
Movable plate is adjusted to suitable angle and height, then measurement sliding block is placed on movable plate at required distance position,
The start-stop button of time set is pressed while loosing one's grip, when sliding block to be measured slides to movable plate bottom end, on measurement sliding block and baffle
Touch switch be in contact, stop timing, then read access time passes through angle, time, the distance of sliding, measurement sliding block
Quality can calculate frictional force data；Or movable plate is adjusted to required angle or height, then measurement sliding block is placed
In movable plate bottom end, lightweight rope is then pulled, during pulling measurement sliding block, is observed and measured on sliding block upper pulling force display screen
Reading records lower pulling force data after stable reading, then can be calculated and be rubbed according to the quality of angle, pulling force and measurement sliding block
Wipe the size of power；In addition to this, it is provided with detachable friction plate on the movable plate of the utility model, it is thick can according to need replacement
The different friction plate of rough degree, can be with the lecture experiment of the simpler convenient relationship for carrying out frictional force and coefficient of friction；Benefit
Efficiently solve the problems, such as that existing design friction force demonstration mode is more single with above-mentioned design；
(2) when the utility model is used, clamping screw is unscrewed, then according to demonstration requirements of one's work, the angle of entry is compareed
Movable plate and firm banking are adjusted to required angle by degree indicating mechanism, or against the altitude scale line on vertical rod,
It pushes on the height instruction block to suitable height on slot, when adjusting movable plate or pushing height instruction block, vertically
Bar can be mobile to the direction close to angle indicating mechanism on the chute, and spacer pin can be moved up in slot, to angle or
After height adjustment finishes, clamping screw is screwed, to movable plate can be fixed in required angle or height, is grasped
Make it is more easy, easily facilitate data record and subsequent calculating；Existing design is all often by sliding block on the market
It hangs a chest expander and is then pulling sliding block with rope, and then measure frictional force by pulling force, but due to chest expander sheet
There is body certain weight can not ignore, therefore existing design data in measurement process can have biggish error, and originally set
Chest expander is fixedly mounted on the inside of block by meter, and the weight of chest expander is counted in the weight of entire measurement sliding block, ensure that survey
The accuracy of data is measured, while easily facilitating user in the pulling force display screen of block upper surface setting and pulling force data is read
Number and record；In addition to this, it is provided with touch switch on baffle, rubs gliding to measuring from movable plate by measurement sliding block
In the lecture experiment for wiping power, start-stop button, the touch switch on measurement sliding block and baffle are pressed while unclamping measurement sliding block
It is in contact, stops timing, compared to common timing mode, which timing is more accurate, can be simpler using above-mentioned design
Angle, height and time data are singly accurately obtained, the work of existing design data record is efficiently solved and is more troublesome simultaneously
The larger problem of test result error.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural representation view of the angle indicating mechanism of the utility model；
Fig. 3 is the structural schematic diagram of the height adjustment mechanism of the utility model；
Fig. 4 is the structural schematic diagram of the measurement sliding block of the utility model；
Fig. 5 is the structural schematic diagram of the fixed pulley mechanism of the utility model.
Figure label explanation:
1, firm banking；2, engaging lug；3, movable plate；4, angle indicating mechanism；5, sliding slot；6, height adjustment mechanism；7,
Spacer pin；8, time set；9, baffle；10, touch switch；11, detachable friction plate；12, sliding block is measured；13, fixed pulley
Mechanism；14, angle indicates disk；15, angle indicator；16, vertical rod；17, clamping screw；18, run through slot；19, altitude scale line；
20, height instruction block；21, block；22, pulling force display screen；23, pull ring；24, chest expander；25, lightweight rope；26, mounting blocks；27,
Pulley.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1:
Please refer to Fig. 1-3, a kind of high school physics friction force demonstration device, including firm banking 1 and movable plate 3, fixed bottom
1 upper surface of seat is fixedly connected with engaging lug 2, and shaft is rotatably connected on engaging lug 2, and movable plate 3 is fixedly connected with shaft, activity
Plate 3 is flexibly connected by shaft and engaging lug 2 with firm banking 1, is also connected with angle indicating mechanism 4 on 2 lateral wall of engaging lug,
It is provided with sliding slot 5 on the side wall of firm banking 1, height adjustment mechanism 6 is connected on sliding slot 5；1 upper surface of firm banking is far from even
2 one end of lug is provided with time set 8, and time set 8 includes time display screen, and time display screen insertion is mounted on fixed bottom
On seat, time display screen side is fixedly connected with start-stop button and reset button；It is solid close to one end of engaging lug 2 on movable plate 3
Surely it is connected with baffle 9, touch switch 10 is fixedly connected on baffle 9, touch switch 10 matches with time set 8, living
It is also fixedly installed with detachable friction plate 11 on movable plate 3, measurement sliding block 12 is provided on detachable friction plate 11, measures sliding block 12
On be connected with lightweight rope 25, lightweight rope 25 is connected in fixed pulley mechanism 13 far from measurement 12 one end of sliding block.
Angle indicating mechanism 4 includes angled instruction disk 14 and angle indicator 15, and angle indicates 2 outside of disk 14 and engaging lug
Wall is fixedly connected, and is fixedly connected with angle index line on the edge of angle instruction disk 14, angle indicator 15 is fixedly connected with shaft.
Height adjustment mechanism 6 includes vertical rod 16, and vertical rod 16 is slidably connected with sliding slot 5, and spiral connects on vertical rod 16
It is connected to clamping screw 17, is provided with above vertical rod 16 on slot 18,3 side wall of movable plate far from the fixed company in 2 one end of engaging lug
It is connected to spacer pin 7, limit spacer pin 7 is slidably connected with through slot 18, is fixedly connected with altitude scale on the edge of vertical rod 16
Line 19 also slidably connects height instruction block 20 on slot 18.
The movable plate 3 of the utility model is rotatablely connected by shaft and firm banking 1, while passing through angle indicating mechanism 4
With height adjustment mechanism 6 can angle to movable plate 3 and height be adjusted, can basis when carrying out friction force demonstration
It needs movable plate 3 being adjusted to suitable angle and height, measurement sliding block 12 is then placed on required distance position on movable plate 3
Place is set, the start-stop button of time set 8 is pressed while loosing one's grip, when sliding block 12 to be measured slides to 3 bottom end of movable plate, measures sliding block
12 are in contact with the touch switch 10 on baffle 9, stop timing, then read access time, by angle, the time, sliding away from
From, measurement sliding block 12 quality can calculate frictional force data；Or movable plate 3 is adjusted to required angle or height, so
Measurement sliding block 12 is placed on 3 bottom end of movable plate afterwards, then pulls lightweight rope 25, during pulling measurement sliding block 12, observation
The reading on 12 upper pulling force display screen 22 of sliding block is measured, lower pulling force data are recorded after stable reading, then according to angle, pulling force
The size of frictional force can be calculated with the quality of measurement sliding block 12；In addition to this, it is provided on the movable plate 3 of the utility model
Detachable friction plate 11 can according to need the different friction plate of replacement degree of roughness, can easily be rubbed with simpler
Wipe the lecture experiment of the relationship of power and coefficient of friction；In such a way that above-mentioned design efficiently solves existing design friction force demonstration compared with
For single problem.
Embodiment 2:
Fig. 4-5 is please referred to, the 1 different place in basis is that measurement sliding block 12 includes block 21 in conjunction with the embodiments,
The insertion of 21 upper surface of block is equipped with pulling force display screen 22, pull ring 23 is fixedly connected on the side wall of block 21, pull ring 23 is also solid
Surely chest expander 24 is connected, chest expander 24 is fixedly mounted on the inside of block 21.
Fixed pulley mechanism 13 includes mounting blocks 26 and pulley 27, and mounting blocks 26 are fixedly connected with 3 upper surface of movable plate, sliding
Wheel 27 is rotatablely connected with mounting blocks 26, and lightweight rope 25 is intertwined and connected on pulley 27.
When the utility model is used, clamping screw 17 is unscrewed, then according to demonstration requirements of one's work, against angle
Movable plate 3 and firm banking 1 are adjusted to required angle by indicating mechanism 4, or against the altitude scale on vertical rod 16
Line 19 pushes on the height instruction block 20 to suitable height on slot 18, is adjusting movable plate 3 or height is pushed to indicate
When block 20, vertical rod 16 can be on sliding slot 5 to close to the movement of the direction of angle indicating mechanism 4, and spacer pin 7 can be in slot 18
It moves up, after being finished to angle or height adjustment, clamping screw 17 is screwed, so that institute can be fixed on movable plate 3
Need angle or height on, operate it is more easy, easily facilitate data record and subsequent calculating；Existing design on the market
It is all often then to pull sliding block with rope by hanging a chest expander 24 on sliding block, and then friction is measured by pulling force
Power, but since there is chest expander 24 itself certain weight can not ignore, existing design data in measurement process
There can be biggish error, and chest expander 24 is fixedly mounted on the inside of block 21 by the design, the weight of chest expander 24 is counted
In the weight of entire measurement sliding block 12, the accuracy of measurement data ensure that, while aobvious in the pulling force of 21 upper surface of block setting
Display screen 22 easily facilitates user and pulling force data is read and recorded；In addition to this, contact is provided on baffle 9 to open
10 are closed, the same of measurement sliding block 12 from the lecture experiment for gliding measurement frictional force on movable plate 3, is being unclamped by measurement sliding block 12
When press start-stop button, measurement sliding block 12 is in contact with the touch switch 10 on baffle 9, stops timing, compared to commonly counting
When mode, which timing is more accurate, using above-mentioned design, simpler can be accurately obtained angle, highly with timely
Between data, efficiently solve the problems, such as that the work of existing design data record is more troublesome while test result error is larger.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change, should all cover in the protection scope of the utility model
It is interior.
Claims (5)
1. a kind of high school physics friction force demonstration device, including firm banking (1) and movable plate (3), it is characterised in that: described solid
Determine pedestal (1) upper surface to be fixedly connected with engaging lug (2), is rotatably connected to shaft, the movable plate on the engaging lug (2)
(3) it is fixedly connected with shaft, the movable plate (3) is flexibly connected by shaft and engaging lug (2) with firm banking (1), described
It is also connected with angle indicating mechanism (4) on engaging lug (2) lateral wall, is provided with sliding slot on the side wall of the firm banking (1)
(5), height adjustment mechanism (6) are connected on the sliding slot (5)；Firm banking (1) upper surface is far from engaging lug (2) one end
It is provided with time set (8), the time set (8) includes time display screen, and the time display screen insertion is mounted on solid
Determine on pedestal, the time display screen side is fixedly connected with start-stop button and reset button；Close to even on the movable plate (3)
One end of lug (2) is fixedly connected with baffle (9), is fixedly connected with touch switch (10), the contact on the baffle (9)
Formula switch (10) matches with time set (8), is also fixedly installed with detachable friction plate (11), institute on the movable plate (3)
It states and is provided with measurement sliding block (12) on detachable friction plate (11), be connected with lightweight rope (25), institute on the measurement sliding block (12)
Lightweight rope (25) are stated to be connected on fixed pulley mechanism (13) far from measurement sliding block (12) one end.
2. a kind of high school physics friction force demonstration device according to claim 1, it is characterised in that: the angle indicates machine
Structure (4) includes angled instruction disk (14) and angle indicator (15), and angle instruction disk (14) and engaging lug (2) lateral wall are solid
It is fixed to connect, angle index line, the angle indicator (15) and shaft are fixedly connected on the edge of angle instruction disk (14)
It is fixedly connected.
3. a kind of high school physics friction force demonstration device according to claim 1, it is characterised in that: the height adjustment machine
Structure (6) includes vertical rod (16), and the vertical rod (16) is slidably connected with sliding slot (5), and spiral connects on the vertical rod (16)
It is connected to clamping screw (17), is provided on slot (18), movable plate (3) side wall above the vertical rod (16) far from even
Lug (2) one end is fixedly connected with spacer pin (7), and the spacer pin (7) is slidably connected with through slot (18), the vertical rod
(16) it is fixedly connected on edge altitude scale line (19), it is described that height instruction block is also slidably connected on slot (18)
(20).
4. a kind of high school physics friction force demonstration device according to claim 1, it is characterised in that: the measurement sliding block
It (12) include block (21), block (21) the upper surface insertion is equipped with pulling force display screen (22), the block (21)
It is fixedly connected on side wall pull ring (23), the pull ring (23) is also fixedly connected chest expander (24), and the chest expander (24) is fixed
It is mounted on the inside of block (21).
5. a kind of high school physics friction force demonstration device according to claim 1, it is characterised in that: the fixed pulley mechanism
It (13) include mounting blocks (26) and pulley (27), the mounting blocks (26) are fixedly connected with movable plate (3) upper surface, the cunning
It takes turns (27) and mounting blocks (26) to be rotatablely connected, the lightweight rope (25) is intertwined and connected on pulley (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920075983.3U CN209560813U (en) | 2019-01-17 | 2019-01-17 | A kind of high school physics friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920075983.3U CN209560813U (en) | 2019-01-17 | 2019-01-17 | A kind of high school physics friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209560813U true CN209560813U (en) | 2019-10-29 |
Family
ID=68308059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920075983.3U Expired - Fee Related CN209560813U (en) | 2019-01-17 | 2019-01-17 | A kind of high school physics friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209560813U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002193A (en) * | 2020-09-15 | 2020-11-27 | 张恩赫 | Student is with physics experiment frictional force testing arrangement |
| CN112289146A (en) * | 2020-10-31 | 2021-01-29 | 石门县第五中学 | Multifunctional integrated physical experiment device |
-
2019
- 2019-01-17 CN CN201920075983.3U patent/CN209560813U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112002193A (en) * | 2020-09-15 | 2020-11-27 | 张恩赫 | Student is with physics experiment frictional force testing arrangement |
| CN112289146A (en) * | 2020-10-31 | 2021-01-29 | 石门县第五中学 | Multifunctional integrated physical experiment device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20210117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |