CN209312294U - A kind of device of parallelogram rule that verifying power - Google Patents
A kind of device of parallelogram rule that verifying power Download PDFInfo
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- CN209312294U CN209312294U CN201822078838.9U CN201822078838U CN209312294U CN 209312294 U CN209312294 U CN 209312294U CN 201822078838 U CN201822078838 U CN 201822078838U CN 209312294 U CN209312294 U CN 209312294U
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- wall
- vertical plates
- ratchet
- nonelastic
- cord
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Abstract
The utility model discloses a kind of devices of parallelogram rule for verifying power, including two vertical plates, the two sides of the bottom of the two vertical plates front and back are fixedly connected to two symmetrical pedestals, fixing axle is fixedly connected on the outer wall of two vertical plates front side, the outside of the fixing axle is socketed with ratchet, and rotation connection is formed between ratchet and fixing axle, three groups of link blocks have been bolted in the front outer wall of the two vertical plates.The utility model facilitates teachers and students to change the length of nonelastic cord at any time, and convenient for the fixation to nonelastic cord, so that student intuitively observes that resultant force is not the algebraical sum of component, the variation of angle and resultant force size between two component is quantitatively obtained by dial disc simultaneously, solves the difficult point in teaching process, not only can with quantitative analysis resultant force and component size relation, additionally it is possible to clear resultant force size with angle variation.
Description
Technical field
The utility model relates to mechanics teaching technical field more particularly to a kind of dresses for the parallelogram rule for verifying power
It sets.
Background technique
Parallelogram rule is the universal laws of vector calculus.When two power synthesis, to indicate the line segment of the two power
Make parallelogram for adjacent side, the diagonal line of this parallelogram means that the size and Orientation of resultant force.
The method of resultant force is sought in existing Middle School Physics teaching material --- the inquiry experiment of parallelogram rule does not have
Good intuitive, in confirmatory measurement, accuracy is not high, and the verification time is long, it is not possible to quantitative analysis resultant force and component
Size relation can't specify resultant force size with the variation of angle.Therefore, it needs to design a kind of parallelogram for verifying power
The device of rule solves the above problems.
Summary of the invention
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of verifying power proposed is flat
The device of row quadrangle rule.
To achieve the goals above, the utility model adopts the technical scheme that a kind of parallelogram for verifying power
The device of rule, including two vertical plates, the two sides of the bottom of the two vertical plates front and back are fixedly connected to two symmetrically
The pedestal of distribution is fixedly connected with fixing axle, the external socket of the fixing axle on the outer wall of two vertical plates front side
There is ratchet, and form rotation connection between ratchet and fixing axle, the front outer wall of the two vertical plates has been bolted three
Group link block, and the specification of three groups of link blocks is identical, the front outer wall of the link block is fixedly installed with first connecting rod, described
First connecting rod is hollow out knot among the fixed plate far from fixed plate has been bolted on one end outer wall of link block
Structure, the two sides outer wall of the fixed plate are provided with threaded hole, and the inside of two threaded holes is plugged with connecting shaft, the company
The outside of spindle is socketed with pulley, and installation is bolted on the front outer wall of the two vertical plates, and there are three in isoceles triangle
The fixed pulley of shape distribution, and link block, first connecting rod, fixed plate, pulley collectively form fixed pulley, on the outer wall of the ratchet
It is wrapped with nonelastic cord.
Further, the front outer wall of the two vertical plates is movably set with the first rubidium magnet, the back of the two vertical plates
The second rubidium magnet is movably set on the outer wall of face, the side outer wall of the first rubidium magnet is pasted with dial disc, and the first rubidium
The position of magnet and the position of the second rubidium magnet are located on same horizontal line.
Further, the pedestal is wooden structures, and two vertical plates are PVC material, and link block is acrylic material.
Further, the front outer wall of the ratchet is welded with handle, and rubber sleeve is socketed on handle, described vertical flat
Plate outer wall on the front outer wall of ratchet is provided with U-type groove, and movable backing pin is plugged with inside U-type groove.
Further, the nonelastic cord has a weight beam far from one end bolt of ratchet, and nonelastic cord around
It connects on fixed pulley, the bottom end of the weight beam is provided with hook.
Further, node is mutually wound with by the free end of three nonelastic cords, wherein two nothings
Elastic cord difference solderless wrapped connection is on fixed pulley, wherein the free end bolt of two nonelastic cords has hook code, and hook code is outstanding
The lower section of fixed pulley is hung over, wherein one end of a nonelastic cord bolts on hook.
The utility model has the following beneficial effects:
1. teachers and students can not only be facilitated to change the length of nonelastic cord at any time by the ratchet and movable backing pin of setting,
And convenient for the fixation to nonelastic cord, the flexibility of the device is improved.
2. dial disc consolidating on two vertical plates can be convenient for by the first rubidium magnet and the second rubidium magnet of setting
It is fixed, convenient for the operation of teacher, improve the teaching efficiency of teacher.
3. by the dial disc and weight beam of setting, so that student intuitively observes that resultant force is not the generation of component
Number and, while the variation of angle and resultant force size between two component is quantitatively obtained by dial disc, solved in teaching process
Difficult point.
It 4, not only can be with quantitative analysis resultant force by weight beam, fixed pulley, hook code and nonelastic cord and node
With the size relation of component, additionally it is possible to clear resultant force size with angle variation.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of verifying power parallelogram rule device structural schematic diagram；
Fig. 2 be the utility model proposes a kind of verifying power parallelogram rule device fixed pulley structure signal
Figure；
Fig. 3 be the utility model proposes a kind of verifying power parallelogram rule device ratchet structure signal
Figure；
Fig. 4 be the utility model proposes a kind of verifying power parallelogram rule device rubidium magnet arrangement signal
Figure.
In figure: 1 two vertical plates, 2 pedestals, 3 ratchets, 4 link blocks, 5 first connecting rods, 6 connecting shafts, 7 nonelastic cords, 8
Weight beam, 9 hooks, 10 dial discs, 11 hook codes, 12 first neodium magnets, 13 second neodium magnets, 14 fixed plates, 15 pulleys,
16 handles, 17 movable backing pins, 18 U-type grooves, 19 fixing axles, 20 fixed pulleys, 21 nodes.
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 should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
Please referring also to Fig. 1 to Fig. 4, a kind of device of parallelogram rule that verifying power, including two vertical plates 1, are erected
The two sides of the bottom of 1 front and back of straight plate are fixedly connected to two symmetrical pedestals 2, and the quantity of pedestal 2 is four
It is a, it can play the role of stablizing support to two vertical plates 1, be fixedly connected with fixation on the outer wall of the positive side of two vertical plates 1
Axis 19, the outside of fixing axle 19 are socketed with ratchet 3, and rotation connection is formed between ratchet 3 and fixing axle 19, and ratchet 3 is in fixation
It is rotated on axis 19, three groups of link blocks 4, and the rule of three groups of link blocks 4 have been bolted in the front outer wall of two vertical plates 1
Lattice are identical, and the front outer wall of link block 4 is fixedly installed with first connecting rod 5, outside the one end of first connecting rod 5 far from link block 4
Fixed plate 14 has been bolted on wall, has been engraved structure among fixed plate 14, the two sides outer wall of fixed plate 14 is provided with spiral shell
Pit, the inside of two threaded holes are plugged with connecting shaft 6, and the outside of connecting shaft 6 is socketed with pulley 15, and pulley 15 is in connecting shaft
It is rotated on 6, installation is bolted on the front outer wall of two vertical plates 1, and there are three the fixed pulleys in isosceles triangle distribution
20, and link block 4, first connecting rod 5, fixed plate 14, pulley 15 collectively form fixed pulley 20, are wrapped on the outer wall of ratchet 3
Nonelastic cord 7, fixed pulley 20 play preferable guiding role to nonelastic cord 7.
Further, the front outer wall of two vertical plates 1 is movably set with the first rubidium magnet 12, outside the back side of two vertical plates 1
The second rubidium magnet 13 is movably set on wall, the side outer wall of the first rubidium magnet 12 is pasted with dial disc 10, and the first rubidium magnetic
The position of iron 12 and the position of the second rubidium magnet 13 are located on same horizontal line, and the height of link block 4 slightly above utilizes rubidium magnetic
Iron is adsorbed on the thickness of the dial disc 10 on two vertical plates 1.
Further, pedestal 2 is wooden structures, and two vertical plates 1 are PVC material, and link block 4 is acrylic material, is adopted
The structure made of novel material can reduce the self weight of the device, save cost.
Further, the front outer wall of ratchet 3 is welded with handle 16, and rubber sleeve is socketed on handle 16, two vertical plates 1
Front outer wall close to ratchet 3 is provided with U-type groove 18, and movable backing pin 17 is plugged with inside U-type groove 18, when people need to ratchet
When 7 rotation, experimenter is extracted movable backing pin 17 from the inside of U-type groove 18, i.e., can be revolved to ratchet 3 by handle 16
Turn, when ratchet 3 is non-rotary, plays the role of limit to ratchet 3 using movable backing pin 17.
Further, nonelastic cord 7 has a weight beam 8 far from one end bolt of ratchet 3, and nonelastic cord 7 around
It connects on fixed pulley 20, the bottom end of weight beam 8 is provided with hook 9, and weight beam 8 can be to the big of the resultant force in experiment
The small effect for playing real-time measurement, improves the intuitive of the device.
Further, node 21 is mutually wound with by the free end of three nonelastic cords 7, wherein two nonelastic thin
7 difference solderless wrapped connection of rope is on fixed pulley 20, wherein the free end bolt of two nonelastic cords 7 has hook code 11, and hook code 11 is hung
In the lower section of fixed pulley 20, wherein one end bolt of a nonelastic cord 7 is being linked up on 9, when node 21 is on two vertical plates 1
When mobile, experimenter can allow node 21 to be always positioned at the center of dial disc 10 by the movement to dial disc 10
Position achievees the purpose that the angle of 10 pairs of resultant forces of dial disc and component measures.
Working principle: in use, two vertical plates 1 are put into smooth desktop by pedestal 2 vertically, two vertical plates 1 just
The first rubidium magnet 12 and the second rubidium magnet 13, mobile first rubidium magnet 12 and the second rubidium magnet 13 are placed in face and the back side simultaneously respectively
Position, so that the position of dial disc 10 is flexibly moved on two vertical plates 1, dial disc 10 be placed on spring dynamometry
The underface of meter 8, experimenter extracts movable backing pin 17 from the inside of U-type groove 18, so that 16 rotating ratchet 3 of handle, drives nothing
The elongation or contraction of elastic cord 7 pull weight beam 8, to drive node 21 to move up, so that node
Angle between two nonelastic cords 7 of 21 lower sections changes, and by shift scale disk 10, makes 10 center of circle of dial disc and knot
Point 21 is overlapped, and becoming larger or becoming smaller for angle can be observed between, directly quantitatively can obtain resultant force by the meter of spring dynamometry 8
Size obtains the size of component by hook code 11, and student can be made to perceive the algebraical sum that resultant force is not component deeply, passed through simultaneously
Dial disc 10 quantitatively obtains the variation of angle and resultant force size between two component, solves the difficult point in teaching process；Pass through
Change 11 quantity of hook code, so that component size is changed, so that node 21 be driven to move up, promote spring dynamometry
Count 8 registrations change angle between (i.e. resultant force size changes) and two component variation verifying terminate after, take away
Hook code 11 makes 8 high scale needle of weight beam be returned to original position, facilitates use and improve weight beam 8 next time
Service life.
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 device for the parallelogram rule for verifying power, including two vertical plates (1), which is characterized in that described vertical flat
The two sides of the bottom of plate (1) front and back are fixedly connected to two symmetrical pedestals (2), and the two vertical plates (1) are just
It is fixedly connected on the outer wall of face side fixing axle (19), the outside of the fixing axle (19) is socketed with ratchet (3), and ratchet
(3) rotation connection is formed between fixing axle (19), three groups of companies have been bolted in the front outer wall of the two vertical plates (1)
It connects block (4), and the specification of three groups of link blocks (4) is identical, the front outer wall of the link block (4) is fixedly installed with first connecting rod
(5), it has been bolted fixed plate (14) on one end outer wall of the first connecting rod (5) separate link block (4), it is described solid
It is engraved structure among fixed board (14), the two sides outer wall of the fixed plate (14) is provided with threaded hole, two threaded holes
Inside is plugged with connecting shaft (6), and the outside of the connecting shaft (6) is socketed with pulley (15), the front of the two vertical plates (1)
The fixed pulley (20) being distributed there are three installing in isosceles triangle, and link block (4), the first connection are bolted on outer wall
Bar (5), fixed plate (14), pulley (15) collectively form fixed pulley (20), are wrapped on the outer wall of the ratchet (3) nonelastic thin
It restricts (7).
2. a kind of device of parallelogram rule for verifying power according to claim 1, which is characterized in that described vertical
The front outer wall of plate (1) is movably set with the first rubidium magnet (12), activity setting on the back side outer wall of the two vertical plates (1)
There is the second rubidium magnet (13), the side outer wall of the first rubidium magnet (12) is pasted with dial disc (10), and the first rubidium magnet
(12) position of position and the second rubidium magnet (13) is located on same horizontal line.
3. a kind of device of parallelogram rule for verifying power according to claim 1, which is characterized in that the pedestal
It (2) is wooden structures, and two vertical plates (1) are PVC material, link block (4) is acrylic material.
4. a kind of device of parallelogram rule for verifying power according to claim 1, which is characterized in that the ratchet
(3) front outer wall is welded with handle (16), and rubber sleeve is socketed on handle (16), and the two vertical plates (1) are close to ratchet
(3) outer wall is provided with U-type groove (18) on front outer wall, and is plugged with movable backing pin (17) inside U-type groove (18).
5. a kind of device of parallelogram rule for verifying power according to claim 1, which is characterized in that the no bullet
Property cord (7) far from one end bolt of ratchet (3) have weight beam (8), and (7) solderless wrapped connection of nonelastic cord is in fixed pulley (20)
On, the bottom end of the weight beam (8) is provided with hook (9).
6. a kind of device of parallelogram rule for verifying power according to claim 5, which is characterized in that pass through three
The free end of the nonelastic cord (7) is mutually wound with node (21), wherein two nonelastic cord (7) solderless wrapped connections respectively
On fixed pulley (20), wherein the free end bolt of two nonelastic cords (7) has hook code (11), and hook code (11) is hung
In the lower section of fixed pulley (20), wherein one end of a nonelastic cord (7) bolts on hook (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822078838.9U CN209312294U (en) | 2018-12-12 | 2018-12-12 | A kind of device of parallelogram rule that verifying power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822078838.9U CN209312294U (en) | 2018-12-12 | 2018-12-12 | A kind of device of parallelogram rule that verifying power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209312294U true CN209312294U (en) | 2019-08-27 |
Family
ID=67676586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822078838.9U Expired - Fee Related CN209312294U (en) | 2018-12-12 | 2018-12-12 | A kind of device of parallelogram rule that verifying power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209312294U (en) |
-
2018
- 2018-12-12 CN CN201822078838.9U patent/CN209312294U/en not_active Expired - Fee Related
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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: 20190827 Termination date: 20201212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |