CN209729204U - A kind of experimental provision convenient for showing lever principle - Google Patents
A kind of experimental provision convenient for showing lever principle Download PDFInfo
- Publication number
- CN209729204U CN209729204U CN201920166279.9U CN201920166279U CN209729204U CN 209729204 U CN209729204 U CN 209729204U CN 201920166279 U CN201920166279 U CN 201920166279U CN 209729204 U CN209729204 U CN 209729204U
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- China
- Prior art keywords
- lever
- experimental
- support rod
- counterweight
- fixing seat
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Abstract
The utility model discloses a kind of experimental provisions convenient for showing lever principle, including device noumenon and support rod, it is welded with experimental bench at the top of described device ontology, and is provided with fixing seat at the top of experimental bench, and the top of fixing seat is connected with lever by support rod.In the utility model, when to lever experimental implementation, sliding rail is offered in the side of lever, pass through the mutual cooperation of sliding rail and movable pulley, the sliding shoe of lever bottom is moved, and sliding shoe bottom is mounted with counterweight by dropping-proof hook, it can effectively prevent counterweight falling off in experimental implementation by dropping-proof hook, to improve the stability of lever experiment, and the movement of counterweight is driven in sliding shoe, the lever experiment distance different to multiple groups may be implemented and carry out slidable adjustment, the calibration data for obtaining it is more accurate, convenient for the calculating of later period formula, greatly improve the working efficiency and precision of lever experiment.
Description
Technical field
The utility model relates to experimental equipment technical field more particularly to a kind of experiment dresses convenient for showing lever principle
It sets.
Background technique
Lever principle is also known as " lever equilibrium condition ".Make lever balance, acts on two torques (power and power on lever
The product of arm) size must be equal.That is: power × power arm=resistance × resistance arm, is expressed as F1L1=with algebraic expression
F2·L2.In formula, F1 indicates that power, L1 indicate that power arm, F2 indicate that resistance, L2 indicate resistance arm.It can be seen that, make from above formula
Lever reaches balance, and power arm is several times of resistance arm, and power is exactly the part of resistance.
Lever experimental provision used at present can not carry out the counterweight that experiment uses good when carrying out lever laboratory
Good fixation, and when experimental implementation is collided, is easy to fall off, and traditional lever experiment counterweight is all that fixation is articulated in thick stick
On bar, it can not be finely adjusted and move to reduce the accuracy rate of experiment, and the experiment bandwagon effect of lever is bad, removes
Except this, the experiment stage property after test was also easy because of the case where placing in disorder active out.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and the one kind proposed is convenient for displaying thick stick
The experimental provision of rod principle.
To achieve the goals above, the utility model adopts the technical scheme that a kind of convenient for showing lever principle
Experimental provision, including device noumenon and support rod are welded with experimental bench at the top of described device ontology, and set at the top of experimental bench
It is equipped with fixing seat, and the top of fixing seat is connected with lever, axis of the two sides of the lever about lever by support rod
Line is symmetrically arranged with two sliding rails, and the side of sliding rail is located at the bottom of lever and slidably connects sliding shoe by movable pulley, and
And the bottom of sliding shoe is mounted with counterweight by dropping-proof hook.
Preferably, the side that the bottom of the fixing seat is located at support rod is equipped with driving motor, and driving motor is defeated
The bottom end annular surface engagement that outlet is located at support rod is connected with gear set, and the bottom end of the support rod is located at the top of fixing seat
It is embedded with shaft.
Preferably, a side surface of the lever offers graduated scale, and the side of the lever is provided with through sliding shoe
Elastic adjusting knob.
Preferably, the side of the experimental bench is symmetrically arranged with two counterweight holders, and two about the central axes of experimental bench
The inside of a counterweight holder, which opens up, classifies slot, and described device ontology is internally provided with experiment stage property storing compartment.
Preferably, the side of described device ontology is equipped with control panel, and the output end and driving motor of control panel
Input terminal be electrically connected.
Preferably, the inside of the fixing seat is equipped with battery, and it is universal that the bottom of described device ontology is equipped with movement
Wheel, and mobile universal wheel is provided with multiple altogether, and multiple mobile universal wheels are equally distributed on four of the bottom of device noumenon
Corner.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that；
1, in the utility model, when to lever experimental implementation, sliding rail is offered in the side of lever, passes through sliding rail and cunning
The sliding shoe of lever bottom is moved in the mutual cooperation of driving wheel, and sliding shoe bottom is mounted with weight by dropping-proof hook
Code, can effectively prevent counterweight falling off in experimental implementation by dropping-proof hook, to improve the stabilization of lever experiment
Property, and by the movement of sliding shoe drive counterweight, the lever experiment distance different to multiple groups may be implemented and carry out slidable adjustment,
The calibration data for obtaining it is more accurate, calculates convenient for later period formula, greatly improves the working efficiency and essence of lever experiment
Accuracy；
2, in the utility model, it is provided with fixing seat at the top of experimental bench, driving electricity is provided at the top of fixing seat
Machine starts driving motor using control panel, drives the engagement of gear set to rotate by driving motor, in the mate-assist of shaft
Under, to realize the rotation to support rod and lever, make its entire lever experiment that can obtain the comprehensive exhibition of 360 deg
Show, convenient for the observation and study of each learner, to improve the quality of instruction of lever experiment, and the one of experimental bench
Side is provided with counterweight holder, can be stored classifiedly, be effectively prevented to the counterweight of different size by counterweight holder
The loss of counterweight, and using the experiment stage property storing compartment being arranged inside device noumenon, can to the lever of lever experiment and
The stage properties such as support rod are stored, and are avoided the damage of experiment stage property, are greatly improved the functionality and practicability of device entirety.
Detailed description of the invention
Fig. 1 be the utility model proposes it is a kind of convenient for show lever principle experimental provision structural schematic diagram；
Fig. 2 be the utility model proposes it is a kind of convenient for show lever principle experimental provision sliding shoe slide construction signal
Figure；
Fig. 3 be the utility model proposes it is a kind of convenient for show lever principle experimental provision counterweight holder stereochemical structure
Schematic diagram.
Marginal data:
1, device noumenon；2, experimental bench；3, fixing seat；4, driving motor；5, support rod；6, lever；7, sliding shoe；8, weight
Code；9, dropping-proof hook；10, gear set；11, shaft；12, counterweight holder；13, mobile universal wheel；14, sliding rail；15, elastic
Adjusting knob；16, movable 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.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention；Term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance；In addition, unless otherwise specific
Regulation and restriction, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to
It is detachably connected, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also lead to
It crosses intermediary to be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be with
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Please refer to Fig. 1-3, a kind of experimental provision convenient for showing lever principle, including device noumenon 1 and support rod 5, dress
The top for setting ontology 1 is welded with experimental bench 2, and the top of experimental bench 2 is provided with fixing seat 3, and the top of fixing seat 3 passes through
Support rod 5 is connected with lever 6, and the two sides of lever 6 are symmetrically arranged with two sliding rails 14, and sliding rail 14 about the central axes of lever 6
Side be located at the bottom of lever 6 sliding shoe 7 slidably connected by movable pulley 16, and the bottom of sliding shoe 7 passes through anticreep
It falls hook 9 and is mounted with counterweight 8.
The side that the bottom of fixing seat 3 is located at support rod 5 is equipped with driving motor 4, and the output end of driving motor 4 is located at
The bottom end annular surface engagement of support rod 5 is connected with gear set 10, and the top that the bottom end of support rod 5 is located at fixing seat 3 is embedded with
Shaft 11, a side surface of lever 6 offer graduated scale, and the side of lever 6 is provided with elastic adjusting knob through sliding shoe 7
15, the side of experimental bench 2 is symmetrically arranged with two counterweight holders 12, and two counterweight holders about the central axes of experimental bench 2
12 inside, which opens up, classifies slot, and device noumenon 1 is internally provided with experiment stage property storing compartment, the side of device noumenon 1
Control panel is installed, and the input terminal of the output end of control panel and driving motor 4 is electrically connected, the inside peace of fixing seat 3
Equipped with battery, the bottom of device noumenon 1 is equipped with mobile universal wheel 13, and mobile universal wheel 13 be provided with altogether it is multiple, and
Multiple mobile universal wheels 13 are equally distributed on four corners of the bottom of device noumenon 1.
Working principle: in use, the device noumenon 1, which is first moved to lever by the mobile universal wheel 13 of bottom, tests exhibition
The working region shown offers sliding rail 14 in the side of lever 6 then when to lever experimental implementation, by sliding rail 14 and slides
The sliding shoe 7 of 6 bottom of lever is moved in the mutual cooperation of driving wheel 16, and 7 bottom of sliding shoe is hung by dropping-proof hook 9
It is connected to counterweight 8, the falling off in experimental implementation of counterweight 8 can effectively prevent by dropping-proof hook 9, to improve lever reality
The stability tested, and drive by sliding shoe 7 movement of counterweight 8, may be implemented the lever different to multiple groups test distance into
Row slidable adjustment, the calibration data for obtaining it is more accurate, calculates convenient for later period formula, greatly improves the work of lever experiment
Make efficiency and precision, and be provided with fixing seat 3 at the top of experimental bench 2, the top of fixing seat 3 is provided with driving motor
4, start driving motor 4 using control panel, drives the engagement of gear set 10 to rotate by driving motor 4, in the auxiliary of shaft 11
It helps under cooperation, to realize the rotation to support rod 5 and lever 6, makes its entire lever experiment that can obtain 360 deg complete
The displaying in orientation, convenient for the observation and study of each learner, to improve the quality of instruction of lever experiment, and in reality
Test platform 2 side be provided with counterweight holder 12, by counterweight holder 12 can the counterweight 8 to different size carry out classification deposit
It puts, effectively prevents the loss of counterweight 8, and using the experiment stage property storing compartment being arranged inside device noumenon 1, it can be to lever
The stage properties such as the lever 6 and support rod 5 of experiment are stored, and the damage of experiment stage property is avoided, and greatly improve device entirety
Functionality and practicability.
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 utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of experimental provision convenient for showing lever principle, including device noumenon (1) and support rod (5), which is characterized in that institute
It states and is welded at the top of device noumenon (1) experimental bench (2), and be provided with fixing seat (3) at the top of experimental bench (2), and is fixed
The top of seat (3) is connected with lever (6) by support rod (5), central axes pair of the two sides of the lever (6) about lever (6)
Title is provided with two sliding rails (14), and the side of sliding rail (14) is located at the bottom of lever (6) and passes through movable pulley (16) and be slidably connected
Have sliding shoe (7), and the bottom of sliding shoe (7) is mounted with counterweight (8) by dropping-proof hook (9).
2. a kind of experimental provision convenient for showing lever principle according to claim 1, which is characterized in that the fixing seat
(3) side that bottom is located at support rod (5) is equipped with driving motor (4), and the output end of driving motor (4) is located at support rod
(5) bottom end annular surface engagement is connected with gear set (10), and the bottom end of the support rod (5) is located at the top of fixing seat (3)
It is embedded with shaft (11).
3. a kind of experimental provision convenient for showing lever principle according to claim 1, which is characterized in that the lever
(6) a side surface offers graduated scale, and the side of the lever (6) is provided with elastic adjusting knob through sliding shoe (7)
(15)。
4. a kind of experimental provision convenient for showing lever principle according to claim 1, which is characterized in that the experimental bench
(2) side is symmetrically arranged with two counterweight holders (12), and two counterweight holders (12) about the central axes of experimental bench (2)
Inside open up and classify slot, described device ontology (1) is internally provided with experiment stage property storing compartment.
5. a kind of experimental provision convenient for showing lever principle according to claim 1, which is characterized in that described device sheet
The side of body (1) is equipped with control panel, and the output end of control panel and the input terminal of driving motor (4) are electrically connected.
6. a kind of experimental provision convenient for showing lever principle according to claim 1, which is characterized in that the fixing seat
(3) inside is equipped with battery, and the bottom of described device ontology (1) is equipped with mobile universal wheel (13), and mobile universal wheel
(13) it is provided with altogether multiple, and multiple mobile universal wheels (13) are equally distributed on four turnings of the bottom of device noumenon (1)
Place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166279.9U CN209729204U (en) | 2019-01-30 | 2019-01-30 | A kind of experimental provision convenient for showing lever principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166279.9U CN209729204U (en) | 2019-01-30 | 2019-01-30 | A kind of experimental provision convenient for showing lever principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209729204U true CN209729204U (en) | 2019-12-03 |
Family
ID=68682057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920166279.9U Expired - Fee Related CN209729204U (en) | 2019-01-30 | 2019-01-30 | A kind of experimental provision convenient for showing lever principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209729204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450632A (en) * | 2021-07-08 | 2021-09-28 | 刘长仕 | Transmission device based on lever principle |
-
2019
- 2019-01-30 CN CN201920166279.9U patent/CN209729204U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450632A (en) * | 2021-07-08 | 2021-09-28 | 刘长仕 | Transmission device based on lever principle |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20220130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |