CN209297580U - A kind of lever principle teaching experimental base - Google Patents
A kind of lever principle teaching experimental base Download PDFInfo
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- CN209297580U CN209297580U CN201821404557.1U CN201821404557U CN209297580U CN 209297580 U CN209297580 U CN 209297580U CN 201821404557 U CN201821404557 U CN 201821404557U CN 209297580 U CN209297580 U CN 209297580U
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- screw rod
- stage body
- lever
- cross bar
- workbench
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Abstract
The utility model discloses a kind of lever principle teaching experimental bases, including testing stage body, lever and lifting platform, the bottom end upper surface of experiment stage body is horizontally disposed bottom plate, bottom plate is fixedly connected by bolt with experiment stage body, lifting platform is provided in experimental bench body, and the upper surface of lifting platform is provided with lever, by the way that cross bar is arranged, cross bar is flexibly connected by movable axis with support plate, by rotating annulus, and then drive connecting shaft rotation, and then drive the rotation of the second screw rod, second screw rod with the first screw rod external toothing by being driven, allow the first screw rod is lower in the vertical direction to move, and then drive workbench moving up and down in vertical direction, so that workbench drives lever to be raised or lowered to the position that suitable experimenter operates, by the way that convex block is arranged, connecting rod is set in the groove between convex block, connecting rod is hung to cross bar Both ends, mobile connection bar, while increasing the weight hung in other end connecting rod, it is easily achieved so that whole operation process is simple and convenient.
Description
Technical field
The utility model relates to teaching experimental base fields, and in particular to a kind of lever principle teaching experimental base.
Background technique
Lever principle is also known as " lever equilibrium condition ".Make lever balance, acts on two power (power and resistances on lever
Power) size be inversely proportional with their arm of force.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 principle experiment is a kind of demenstration method being often used in teaching, and operator passes through on operation experiments platform
Lever is to achieve the purpose that understand lever principle, and current most of lever experimental benches are a kind of common station, and function is more
It is single, the height of experimental bench cannot be adjusted according to the demand of operator, it has not been convenient to which operator uses.
Utility model content
The purpose of this utility model is to provide a kind of chemical alcolhol burner experiment frames, to solve most of lever experiments at present
Platform is a kind of common station, and function is more single, and the height of experimental bench cannot be adjusted according to the demand of operator, it has not been convenient to
The technical issues of operator uses.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of lever principle teaching experimental base, including experiment stage body, lever and lifting platform, the experiment stage body are hollow knot
Structure, test stage body bottom end upper surface it is horizontally disposed have bottom plate, bottom plate is fixedly connected by bolt with stage body is tested, bottom plate it is upper
End is welded with shell, lifting platform is provided in shell, and the upper surface of lifting platform is provided with lever；
The lifting platform includes workbench, telescopic rod, the first screw rod and connecting shaft, is arranged in parallel with work right above shell
Make platform, and has the first mounting plate, the first mounting plate and work at left and right sides of the bottom end lower surface of workbench with center line symmetrical setting
It is welded and fixed as platform, and the lower end of two the first mounting plates is welded with first sleeve, is respectively provided in two first sleeves
There is telescopic rod, the top of two telescopic rods is weldingly fixed on the first mounting plate, is provided with the second peace between two telescopic rods
Loading board, and the second mounting plate is bolted on the centre of workbench bottom end lower surface, the lower end activity of the second mounting plate connects
It is connected to the first screw rod, and the lower end of the first screw rod sequentially passes through shell, protective housing and experiment stage body, extends downward into experiment stage body
Outside；
The lever includes pedestal, support plate, cross bar, convex block, connecting rod, storage slot, and pedestal is bolted on work
To make among the upper surface of platform, the upper surface intermediate vertical of pedestal is provided with support plate, and support plate is integrated with pedestal,
Upside one end of support plate is provided with movable axis, and movable axis is flexibly connected through support plate with cross bar, and the top etc. of cross bar
Spacing is provided with several convex blocks, is provided with connecting rod in the groove between convex block two-by-two, and connecting rod is flexibly connected with groove, connection
The lower end of bar is provided with several connecting ropes, and the lower end of several connecting ropes is fixedly connected and is connected with storage slot.
As the further scheme of the utility model, shell is in n shape structure.
As the further scheme of the utility model, shell and experiment stage body are run through in the lower end of two telescopic rods, downwards
Extend to the outside of experiment stage body.
As the further scheme of the utility model, the second spiral shell of protective housing being internally provided with the first screw rod external toothing
Bar, the first screw rod are vertical setting with the second screw rod, and one end of the second screw rod extends outwardly through protective housing, and the second screw rod
One end is rotatably connected to connecting shaft, and sealing cover is provided between connecting shaft and protective housing, and sealing cover is solid by bolt and protective housing
Fixed connection, there are three gussets for the outside spaced set of connecting shaft, and the top of three gussets is weldingly fixed on the interior of annulus
Side.
As the further scheme of the utility model, the bottom end of protective housing is provided with backing plate, and backing plate passes through bolt and bottom plate
It is fixedly connected.
As the further scheme of the utility model, cross bar is in rectangular parallelepiped structure, is provided with graduation mark on the downside of cross bar.
As the further scheme of the utility model, several convex blocks are square structure, set in the groove between convex block two-by-two
It is equipped with connecting rod, connecting rod is flexibly connected with groove, and the lower end of connecting rod is provided with several connecting ropes, and under several connecting ropes
End, which is fixedly connected, is connected with storage slot, can place experiment weight in storage slot.
As the further scheme of the utility model, the bottom end surrounding of the experiment stage body is symmetrically arranged with support column, and
The bottom end of support column is provided with non-slip mat.
The utility model has the beneficial effects that cross bar is flexibly connected by movable axis with support plate, is led to by setting cross bar
Cross rotation annulus, and then drive connecting shaft rotation, and then drive the rotation of the second screw rod, the second screw rod by with outside the first screw rod
Engaged transmission allows the first screw rod is lower in the vertical direction to move, and then workbench is driven to move down on vertical direction
It is dynamic, so that workbench drives lever to be raised or lowered to the position of suitable experimenter's operation, by being arranged convex block, between convex block
Connecting rod is set in groove, connecting rod is hung to the both ends of cross bar, mobile connection bar, while increasing and being hung in other end connecting rod
Weight be easily achieved so that whole operation process is simple and convenient.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the utility model lever principle teaching experimental base structural schematic diagram；
Fig. 2 is the utility model lifting platform structural schematic diagram；
Fig. 3 the utility model lever construction schematic diagram.
In figure: 1, testing stage body；2, bottom plate；3, bolt；4, shell；5, lifting platform；501, workbench；502, the first installation
Plate；503, first sleeve；504, second sleeve；505, telescopic rod；506, the second mounting plate；507, the first screw rod；508, it protects
Case；509, backing plate；510, sealing cover；511, connecting shaft；512, gusset；513, annulus；6, lever；61, pedestal；62, support plate；
63, movable axis；64, cross bar；65, convex block；66, connecting rod；67, connecting rope；68, storage slot；7, support column；8, non-slip mat.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with embodiment, it is clear that described
Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Based on the reality in the utility model
Example is applied, all other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the range of the utility model protection.
It please refers to shown in Fig. 1-3, a kind of lever principle teaching experimental base, including experiment stage body 1, lifting platform 5 and lever 6,
The experiment stage body 1 is hollow structure, and the bottom end upper surface of experiment stage body 1 is horizontally disposed a bottom plate 2, bottom plate 2 by bolt 3 with
Experiment stage body 1 is fixedly connected, and the upper end of bottom plate 2 is welded with shell 4, and shell 4 is in n shape structure, is provided with lifting in shell 4
Platform 5, and the upper surface of lifting platform 5 is provided with lever 6.
The lifting platform 5 include workbench 501, telescopic rod 505, the first screw rod 507 and connecting shaft 511, shell 4 just on
Side is arranged in parallel with workbench 501, and has the first peace at left and right sides of the bottom end lower surface of workbench 501 with center line symmetrical setting
Loading board 502, the first mounting plate 502 are welded and fixed with workbench 501, and the lower end of two the first mounting plates 502 is welded and fixed
There is first sleeve 503, telescopic rod 505 is provided in two first sleeves 503, the top of two telescopic rods 505 is welded solid
It is scheduled on the first mounting plate 502, and shell 4 and experiment stage body 1 are run through in the lower end of two telescopic rods 505, extend downward into reality
The outside of stage body 1 is tested, two telescopic rods 505 are provided with second sleeve 504, second sleeve 504 and shell through the position of shell 4
4 are connected to, and are provided with the second mounting plate 506 between two telescopic rods 505, and the second mounting plate 506 is bolted on work
The centre of 501 bottom end lower surface of platform, the lower end of the second mounting plate 506 are connected with the first screw rod 507, and the first screw rod 507
Lower end sequentially pass through shell 4, protective housing 508 and experiment stage body 1, extend downward into experiment stage body 1 outside, protective housing 508
The second screw rod being internally provided with 507 external toothing of the first screw rod, the first screw rod 507 is vertical setting with the second screw rod,
One end of two screw rods extends outwardly through protective housing 508, and one end of the second screw rod is rotatably connected to connecting shaft 511, connecting shaft
Sealing cover 510 is provided between 511 and protective housing 508, sealing cover 510 is fixedly connected by bolt with protective housing 508, sealing cover
510 can prevent the oil leakage in protective housing 508, and there are three gussets 512 for the outside spaced set of connecting shaft 511, and
The top of three gussets 512 is weldingly fixed on the inside of annulus 513, and the first screw rod 507 may be implemented by rotating annulus 513
Move up and down, and then drive moving up and down for refreshing telescopic rod 505, it is final to realize moving up and down for workbench 501, protective housing
508 bottom end is provided with backing plate 509, and backing plate 509 is fixedly connected by bolt with bottom plate 2.
The lever 6 includes pedestal 61, support plate 62, cross bar 64, convex block 65, connecting rod 66, storage slot 68, and pedestal 61 is logical
It crosses bolt to be fixed among the upper surface of workbench 501, the upper surface intermediate vertical of pedestal 61 is provided with support plate 62, and supports
Plate 62 is integrated with pedestal 61, and upside one end of support plate 62 is provided with movable axis 63, and movable axis 63 is through support
Plate 62 is flexibly connected with cross bar 64, and cross bar 64 is in rectangular parallelepiped structure, and the downside of cross bar 64 is provided with graduation mark, and graduation mark can be straight
66 position of display connecting rod of sight, and the top spaced set of cross bar 64 has several convex blocks 65, and several convex blocks 65 are in
Square structure is provided with connecting rod 66 in the groove between convex block 65 two-by-two, and connecting rod 66 is flexibly connected with groove, connecting rod 66
Lower end be provided with several connecting ropes 67, and the lower end of several connecting ropes 67 is fixedly connected and is connected with storage slot 68, storage slot 68
It is interior to place experiment weight.
The bottom end surrounding of the experiment stage body 1 is symmetrically arranged with support column 7, and the bottom end of support column 7 is provided with non-slip mat
8。
When the utility model is used, pedestal 61 is fixedly connected by bolt with workbench 501, while cross bar 64 being led to
It crosses movable axis 63 to be flexibly connected with support plate 62, rotates annulus 513, and then connecting shaft 511 is driven to rotate, and then drive the second spiral shell
The rotation of bar, the second screw rod by with 507 external toothing of the first screw rod be driven, allow the first screw rod 507 in the vertical direction
Lower movement, and then the moving up and down in vertical direction of workbench 501 is driven, so that workbench 501 drives lever 6 to be raised and lowered
The position operated to suitable experimenter, connecting rod 66 is hung to the both ends of cross bar 64, mobile connection bar 66, while increasing the other end
The weight hung in connecting rod 66 is to complete to test.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (8)
1. a kind of lever principle teaching experimental base, including experiment stage body (1), lever (6), which is characterized in that further include lifting platform
(5), the experiment stage body (1) is hollow structure, and the bottom end upper surface of experiment stage body (1) is horizontally disposed bottom plate (2), bottom plate
(2) it is fixedly connected by bolt (3) with experiment stage body (1), the upper end of bottom plate (2) is welded with shell (4), in shell (4)
It is provided with lifting platform (5), and the upper surface of lifting platform (5) is provided with lever (6)；
The lifting platform (5) includes workbench (501), telescopic rod (505), the first screw rod (507) and connecting shaft (511), shell
(4) it is arranged in parallel with right above workbench (501), and with center line pair at left and right sides of the bottom end lower surface of workbench (501)
Title is provided with the first mounting plate (502), and the first mounting plate (502) is welded and fixed with workbench (501), and two the first mounting plates
(502) lower end is welded with first sleeve (503), is provided with telescopic rod (505) in two first sleeves (503),
The top of two telescopic rods (505) is weldingly fixed on the first mounting plate (502), is provided between two telescopic rods (505)
Second mounting plate (506), and the second mounting plate (506) is bolted on the centre of workbench (501) bottom end lower surface, the
The lower end of two mounting plates (506) is connected with the first screw rod (507), and the lower end of the first screw rod (507) sequentially passes through shell
(4), protective housing (508) and experiment stage body (1), extend downward into the outside of experiment stage body (1)；
The lever (6) includes pedestal (61), support plate (62), cross bar (64), convex block (65), connecting rod (66), storage slot
(68), pedestal (61) is bolted among the upper surface of workbench (501), and the upper surface intermediate vertical of pedestal (61) is set
It is equipped with support plate (62), and support plate (62) is integrated with pedestal (61), upside one end of support plate (62) is provided with
Movable axis (63), and movable axis (63) is flexibly connected through support plate (62) with cross bar (64), and between top of cross bar (64) etc.
Away from several convex blocks (65) are provided with, be provided with connecting rod (66) in the groove between convex block (65) two-by-two, connecting rod (66) with it is recessed
Slot is flexibly connected, and the lower end of connecting rod (66) is provided with several connecting ropes (67), and the fixed company in lower end of several connecting ropes (67)
It is connected to storage slot (68) in succession.
2. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that the shell (4) is in n shape knot
Structure.
3. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that two telescopic rods
(505) shell (4) and experiment stage body (1) are run through in lower end, extend downward into the outside of experiment stage body (1).
4. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that the protective housing (508)
It is internally provided with the second screw rod with the first screw rod (507) external toothing, the first screw rod (507) is vertical setting with the second screw rod,
One end of second screw rod extends outwardly through protective housing (508), and one end of the second screw rod is rotatably connected to connecting shaft (511),
It is provided between connecting shaft (511) and protective housing (508) sealing cover (510), sealing cover (510) passes through bolt and protective housing
(508) it is fixedly connected, there are three the outside spaced sets of connecting shaft (511) gusset (512), and the top of three gussets (512)
End is weldingly fixed on the inside of annulus (513).
5. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that the protective housing (508)
Bottom end is provided with backing plate (509), and backing plate (509) is fixedly connected by bolt with bottom plate (2).
6. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that the cross bar (64) is in rectangular
Body structure, cross bar are provided with graduation mark on the downside of (64).
7. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that several convex blocks (65) are in
Square structure is provided with connecting rod (66) in the groove between convex block (65) two-by-two, and connecting rod (66) is flexibly connected with groove, even
The lower end of extension bar (66) is provided with several connecting ropes (67), and the lower end of several connecting ropes (67) is fixedly connected and is connected with storage slot
(68), experiment weight can be placed in storage slot (68).
8. a kind of lever principle teaching experimental base according to claim 1, which is characterized in that experiment stage body (1)
Bottom end surrounding is symmetrically arranged with support column (7), and the bottom end of support column (7) is provided with non-slip mat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404557.1U CN209297580U (en) | 2018-08-29 | 2018-08-29 | A kind of lever principle teaching experimental base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821404557.1U CN209297580U (en) | 2018-08-29 | 2018-08-29 | A kind of lever principle teaching experimental base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209297580U true CN209297580U (en) | 2019-08-23 |
Family
ID=67651961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821404557.1U Active CN209297580U (en) | 2018-08-29 | 2018-08-29 | A kind of lever principle teaching experimental base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209297580U (en) |
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2018
- 2018-08-29 CN CN201821404557.1U patent/CN209297580U/en active Active
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