CN208240243U - A kind of novel physical lever teaching aid - Google Patents
A kind of novel physical lever teaching aid Download PDFInfo
- Publication number
- CN208240243U CN208240243U CN201721897790.3U CN201721897790U CN208240243U CN 208240243 U CN208240243 U CN 208240243U CN 201721897790 U CN201721897790 U CN 201721897790U CN 208240243 U CN208240243 U CN 208240243U
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- lever
- slot
- telescopic rod
- teaching aid
- screw thread
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Abstract
The utility model relates to a kind of novel physical lever teaching aids, including pedestal, the base top is equipped with telescopic rod slot, telescopic rod slot two sides are equipped with counterweight frame slot, telescopic rod groove top portion is equipped with lever slot, the lever slot side is equipped with Weight box, and counterweight slot is equipped in the Weight box, the lever slot intracavity bottom is connected with telescopic rod by shaft, the flexible rod-groove side is equipped with groove, the groove two sides are equipped with sliding slot, and the sliding slot is connected with baffle by sliding block, handle is equipped at the top of described baffle one end, the telescopic rod, which is equipped with, adjusts bolt, lever is connected with by shaft at the top of the telescopic rod, the lever both ends are connected with calibration regulation cock by screw thread, the lever two sides are connected with sliding sleeve by sliding block, fastening bolt is connected with by screw thread at the top of the sliding sleeve, this is practical new Type is easy to implement quick adjusting, and stability is high, easy to operate, and storage is convenient, saves the time.
Description
Technical field
The utility model relates to a kind of novel physical lever teaching aids, belong to Physical Experiment apparatus field.
Background technique
Lever principle is also referred to as " lever balance " condition, to make lever balance, then two torques acted on lever are big
It is small must be equal, it may be assumed that power * power arm=resistance * resistance arm, algebraic expression indicate are as follows: F1*L1=F2*L2, in formula, F1 is
Power, L1 are power arm, and F2 is resistance, and L2 is resistance arm, and teacher is in carrying out physical teaching course, in order to make student more preferable
It grasps and understands lever principle in ground, it usually needs introduce lever using teaching aid and test, student is allowed to pass through the ratio of multiple groups experimental data
To better grasping lever principle, lever teaching aid is a kind of teaching aid for demonstrating lever principle, on existing lever teaching aid
Cross bar and vertical bar pass through pin shaft and be flexibly connected, it has not been convenient to carry out storage placement, and counterweight is absolute construction, is also easy to lose
It loses, existing lever used for physics teaching is inconvenient when in use, and counterweight is easy to shake when adjusting, influences measurement data, operates
It is complicated, it is therefore necessary to improve.
Utility model content
The technical problems to be solved in the utility model overcomes existing defect, provides a kind of novel physical lever teaching aid, leads to
Setting lever slot, counterweight frame slot and Weight box are crossed, it is convenient that teaching equipment is stored, it is not easy to lose, by the way that telescopic rod is arranged,
Facilitate adjusting lever height, by setting baffle, plays the role of fixed vertical position to telescopic rod, by the way that counterweight frame is arranged,
It prevents from generating data error because counterweight shakes, can effectively solve the problems in background technique.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solution:
A kind of novel physical lever teaching aid, including pedestal, the base top are equipped with telescopic rod slot, the telescopic rod slot two
Side is equipped with counterweight frame slot, and telescopic rod groove top portion is equipped with lever slot, and the lever slot side is equipped with Weight box, and the counterweight
Counterweight slot is equipped in box, the lever slot intracavity bottom is connected with telescopic rod by shaft, and the flexible rod-groove side is equipped with recessed
Slot, the groove two sides are equipped with sliding slot, and the sliding slot is connected with baffle by sliding block, is equipped with hand at the top of described baffle one end
Handle, the telescopic rod, which is equipped with, adjusts bolt, is connected with lever by shaft at the top of the telescopic rod, the lever both ends pass through
Screw thread is connected with calibration regulation cock, and the lever two sides are connected with sliding sleeve by sliding block, pass through at the top of the sliding sleeve
Screw thread is connected with fastening bolt, and the sliding sleeve bottom is connected with counterweight frame, the lever top center by screw thread
Equipped with pointer, and the pointer, perpendicular to lever, the lever middle side is equipped with indicator board, and the indicator board is equipped with sky
Chamber, and transparent glass is equipped on the outside of the cavity, equilibrium liquid is equipped in the cavity, the equilibrium liquid liquid level is equipped with T-type plate,
And the T-type plate topside area is corresponding to equilibrium liquid liquid level.
Furthermore, counterweight frame side is equipped with counterweight import, and corresponding with counterweight size.
Furthermore, the lever side is equipped with scale label, and described slide over sets positioned at lever scale label side
There is opening, and is located at sliding sleeve midline position and is equipped with mark line.
Furthermore, the telescopic rod interior bar and outer bar, the outer bar cavity inner wall are equipped with screw thread, the interior bar bottom end
It is connected through a screw thread outer bar inner wall, the adjusting bolt connects interior bar through outer bar by screw thread.
Furthermore, the base top side is equipped with link, and the base top other side is connected by a hinge and has
Box cover, and the box cover side is equipped with hook, and corresponding with the link.
Furthermore, the equilibrium liquid is the transparent diesel oil of color.
Furthermore, vertical range of the groove away from telescopic rod slot is consistent with the outer bar of telescopic rod.
For the utility model the utility model has the advantages that a kind of novel physical lever teaching aid involved in the utility model, structure is simple, if
Meter is rationally, convenient to store to teaching equipment by setting lever slot, counterweight frame slot and Weight box, not easy to lose, by setting
Telescopic rod is set, adjusting lever height is facilitated, by setting spring button and location hole, fixed vertical position is played to telescopic rod
Effect prevents from generating data error because counterweight shakes, improves the convenience of storage by the way that counterweight frame is arranged.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
Fig. 1 is a kind of front view of novel physical lever teaching aid of the utility model.
Fig. 2 is a kind of top view of novel physical lever teaching aid of the utility model.
Fig. 3 is a kind of schematic diagram of novel physical lever teaching aid of the utility model.
Fig. 4 is a kind of indicator board structural schematic diagram of novel physical lever teaching aid of the utility model.
Figure label: 1, pedestal；2, lever slot；3, counterweight frame slot；4, Weight box；5, counterweight slot；6, telescopic rod；7, it stretches
Bar slot；8, groove；9, bolt is adjusted；10, lever；11, regulation cock is calibrated；12, sliding sleeve；13, fastening bolt；14, counterweight frame；
15, pointer；16, indicator board；17, cavity；18, equilibrium liquid；19, T-type plate；20, baffle；21, handle.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
As Figure 1-Figure 4, a kind of novel physical lever teaching aid, including pedestal 1 are equipped with telescopic rod at the top of the pedestal 1
Slot 7,7 two sides of telescopic rod slot are equipped with counterweight frame slot 3, are equipped with lever slot 2, the lever slot 2 one at the top of the telescopic rod slot 7
Side is equipped with Weight box 4, and counterweight slot 5 is equipped in the Weight box 4, and 2 intracavity bottom of lever slot is connected with by shaft to be stretched
Contracting bar 6,7 side of telescopic rod slot are equipped with groove 8, and 8 two sides of groove are equipped with sliding slot, and the sliding slot is connected by sliding block
There is baffle 20, handle 21 is equipped at the top of described 20 one end of baffle, the telescopic rod 6, which is equipped with, adjusts bolt 9, the telescopic rod 6
Top is connected with lever 10 by shaft, and 10 both ends of lever are connected with calibration regulation cock 11, the thick stick by screw thread
10 two sides of bar are connected with sliding sleeve 12 by sliding block, are connected with fastening bolt 13 by screw thread at the top of the sliding sleeve 12,
12 bottom of sliding sleeve is connected with counterweight frame 14 by screw thread, and 10 top center of lever is equipped with pointer 15, and described
For pointer 15 perpendicular to lever 10, the 10 middle part side of lever is equipped with indicator board 16, and the indicator board 16 is equipped with cavity 17, and
It is equipped with transparent glass on the outside of the cavity 17, equilibrium liquid 18 is equipped in the cavity 17,18 liquid level of equilibrium liquid is equipped with T-type
Plate 19, and 19 topside area of T-type plate is corresponding to 18 liquid level of equilibrium liquid.
14 side of counterweight frame is equipped with counterweight import, and corresponding with counterweight size, facilitates placement counterweight, the lever 10
Side is equipped with scale label, and the sliding sleeve 12 is being located at 10 scale label side of lever equipped with opening, and is located at 12 middle line of sliding sleeve
Position is equipped with mark line, 6 interior bar of telescopic rod and outer bar, and the outer bar cavity inner wall is equipped with screw thread, and the interior bar bottom end is logical
Threaded connection outer bar inner wall is crossed, the adjusting bolt 9 connects interior bar through outer bar by screw thread, and 1 top side of pedestal, which is equipped with, to be hung
Ring, the 1 top other side of pedestal are connected by a hinge and have box cover, and the box cover side be equipped with hook, and with the link
Corresponding, storage is convenient, and the equilibrium liquid 18 is the transparent diesel oil of color, vertical range of the groove 8 away from telescopic rod slot 7 with stretch
The outer bar of contracting bar 6 is consistent.
Utility model works principle: it when work, first passes through calibration regulation cock 11 and calibrates, then as needed set counterweight
In in counterweight frame 14, moving sliding sleeve 12 to suitable position fastens sliding sleeve 12 by fastening bolt 13, observation pointer 15 with
Whether 19 bottom of T-type plate is overlapped, and when storage, first removes to put in order counterweight and is placed in counterweight frame in Weight box 4, removing counterweight frame 14
In slot 3, lever 10 is placed in lever slot 2 by shaft, storage can be completed.
The above are the preferable embodiment of the utility model, the utility model those skilled in the art can also be to upper
It states embodiment to change and modify, therefore, the utility model is not limited to above-mentioned specific embodiment, all abilities
Field technique personnel made any conspicuous improvement, replacement or modification on the basis of the utility model belong to practical
Novel protection scope.
Claims (7)
1. a kind of novel physical lever teaching aid, including pedestal (1), it is characterised in that: be equipped with telescopic rod slot at the top of the pedestal (1)
(7), telescopic rod slot (7) two sides are equipped with counterweight frame slot (3), are equipped with lever slot (2) at the top of the telescopic rod slot (7), described
Lever slot (2) side is equipped with Weight box (4), and is equipped with counterweight slot (5) in the Weight box (4), the interior bottom of chamber of the lever slot (2)
Portion is connected with telescopic rod (6) by shaft, and telescopic rod slot (7) side is equipped with groove (8), and groove (8) two sides are equipped with
Sliding slot, and the sliding slot is connected with baffle (20) by sliding block, is equipped with handle (21) at the top of described baffle (20) one end, it is described to stretch
Contracting bar (6), which is equipped with, adjusts bolt (9), is connected with lever (10) at the top of the telescopic rod (6) by shaft, the lever (10)
Both ends are connected with calibration regulation cock (11) by screw thread, and lever (10) two sides are connected with sliding sleeve by sliding block
(12), it is connected with fastening bolt (13) at the top of the sliding sleeve (12) by screw thread, sliding sleeve (12) bottom passes through screw thread
It is connected with counterweight frame (14), lever (10) top center is equipped with pointer (15), and the pointer (15) is perpendicular to thick stick
Bar (10), lever (10) middle part side are equipped with indicator board (16), and the indicator board (16) is equipped with cavity (17), and described
It is equipped with transparent glass on the outside of cavity (17), is equipped with equilibrium liquid (18) in the cavity (17), is set on equilibrium liquid (18) liquid level
Have T-type plate (19), and T-type plate (19) topside area is corresponding to equilibrium liquid (18) liquid level.
2. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: counterweight frame (14) side is set
There is counterweight import, and corresponding with counterweight size.
3. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: lever (10) side is equipped with
Scale label, the sliding sleeve (12) is being located at lever (10) scale label side equipped with opening, and is located at sliding sleeve (12) middle line position
Mark line is installed.
4. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: telescopic rod (6) interior bar and
Outer bar, the outer bar cavity inner wall are equipped with screw thread, and the interior bar bottom end is connected through a screw thread outer bar inner wall, the adjusting bolt
(9) interior bar is connected through outer bar by screw thread.
5. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: pedestal (1) top side
Equipped with link, at the top of the pedestal (1), the other side, which is connected by a hinge, box cover, and the box cover side is equipped with and links up with, and with
The link is corresponding.
6. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: the equilibrium liquid (18) is color
Transparent diesel oil.
7. a kind of novel physical lever teaching aid according to claim 1, it is characterised in that: the groove (8) is away from telescopic rod
The vertical range of slot (7) is consistent with the outer bar of telescopic rod (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721897790.3U CN208240243U (en) | 2017-12-29 | 2017-12-29 | A kind of novel physical lever teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721897790.3U CN208240243U (en) | 2017-12-29 | 2017-12-29 | A kind of novel physical lever teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208240243U true CN208240243U (en) | 2018-12-14 |
Family
ID=64577930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721897790.3U Expired - Fee Related CN208240243U (en) | 2017-12-29 | 2017-12-29 | A kind of novel physical lever teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208240243U (en) |
-
2017
- 2017-12-29 CN CN201721897790.3U patent/CN208240243U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 Termination date: 20191229 |