CN104900115B - Portable comprehensive mechanics demonstrator - Google Patents
Portable comprehensive mechanics demonstrator Download PDFInfo
- Publication number
- CN104900115B CN104900115B CN201510237212.6A CN201510237212A CN104900115B CN 104900115 B CN104900115 B CN 104900115B CN 201510237212 A CN201510237212 A CN 201510237212A CN 104900115 B CN104900115 B CN 104900115B
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- fixed
- fixed mount
- rotary shaft
- lining bar
- moment
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of portable comprehensive mechanics demonstrator, including base (1), fixed mount (2), lining bar (3), at least six foil gauges (20), force application apparatus, the signal processing circuit for processing foil gauge (20) signal, computer and projector equipment；At least six described foil gauges (20) are installed on lining bar (3)；At least six described foil gauges (20) electrically connect with the input of signal processing circuit, output end and the calculating mechatronics of the signal processing circuit；Described computer is also electrically connected with projector equipment；Described fixed mount (2), force application apparatus are installed on base (1)；Described force application apparatus are also arranged on fixed mount (2)；Described lining bar (3) lower end is fixed on base (1), and described lining bar (3) upper end is fixed on fixed mount (2).Above-mentioned portable comprehensive mechanics demonstrator can simultaneously test three kinds of power and small volume, light weight.
Description
Technical field
It is especially a kind of portable comprehensive mechanics demonstrator the present invention relates to mechanical meaurement instructional technology field.
Background technology
Teaching mechanics apparatus is the instrument for measuring and recording power.The mechanics demonstrator of current teaching can only test one
Power is planted, otherwise tensile force and compression stress can only be surveyed, either bending force can only be surveyed, or twisting resistance can only be surveyed.If needing to survey
Above-mentioned three kinds of power, then need to carry multiple instruments, inconvenient in the extreme.Meanwhile, the purchase of various instruments can also be greatly increased
The financial burden of school.The deficiency that volume is big in addition, above-mentioned mechanics demonstrator is also existed, quality is heavy.Therefore, based on above-mentioned original
Cause, it would be highly desirable to need it is a kind of can be while test three kinds of power and small volume, the mechanics demonstrator of light weight, to solve the above problems.
The content of the invention
The technical problem to be solved in the present invention be to provide it is a kind of can and meanwhile test three kinds of power and small volume, light weight just
Take formula synthesis mechanics demonstrator.
The technical scheme is that, there is provided a kind of portable comprehensive mechanics demonstrator, including base, fixed mount, lining bar,
At least six foil gauges, force application apparatus, the signal processing circuit for processing foil gauge signal, computer and projector equipment；
At least six described foil gauges are installed on lining bar；At least six described foil gauges and the input of signal processing circuit
Electrical connection, output end and the calculating mechatronics of the signal processing circuit；Described computer is also electrically connected with projector equipment；
Described fixed mount, force application apparatus are installed on base；Described force application apparatus are also arranged on fixed mount；Described lining bar
Lower end is fixed on base, and described lining bar upper end is fixed on fixed mount.
Described force application apparatus produce component, pressure to produce component, moment of flexure to produce component to constitute by moment of torsion；Described torsion
Square produces component to be fixedly mounted on a fixture block of fixing clip including a fixing clip, at least one first twist grips, one
Cylindrical element and one be arranged on moment of torsion on cylindrical element from lock set；Described moment of torsion also horizontally slips to coordinate and exists from lock set
On fixed mount；Described fixing clip is arranged on lining bar upper end；The first described twist grip is arranged in fixing clip；It is described
Pressure produce the component to include that one second twist grip, rotary shaft and two rotary shafts being slidably fitted on fixed mount are consolidated
Determine block, described rotary shaft is rotatably assorted in two rotary shaft fixed blocks；The second described twist grip is fixed on rotary shaft
Upper end；The lower end of the rotary shaft is threadedly coupled with cylindrical element；Described moment of flexure produces component to be rotatably assorted solid including one
Determine the connection rotating shaft and the 3rd twist grip on frame；One end of the connection rotating shaft is connected with the 3rd twist grip, the company
The other end for switching through axle offsets through a rotary shaft fixed block with rotary shaft.
Described moment of torsion includes two pieces of left and right fixed plate, a unilateral bearing and a wedge-shaped limited block from lock set；It is described
Unilateral bearing be socketed on cylindrical element；Described unilateral bearing pass through wedge-shaped limited block with cylindrical element with limit unilateral bearing with
Cylindrical element is mutually rotated；Two pieces of described fixed plates are a tight fit in outside unilateral bearing；Two pieces of described fixed plates pass through two spiral shells
Bolt fixture is fixedly connected；Two pieces of described fixed plates also horizontally slip cooperation on fixed mount.
Described signal processing circuit includes signal amplifier, microcomputer development plate, the first bridge rectifier, the second bridge
Formula rectification circuit；Described the first bridge rectifier, the second bridge rectifier are electrically connected with signal amplifier, described
Signal amplifier is electrically connected with microcomputer development plate.
Described fixed mount includes four root posts, two crossbeams and two connectors；The lower end of four root post is consolidated
It is scheduled on base, wherein two upper ends in four root post are connected with a connection piece, in four root post other two
Root upper end is connected with another connector；One end of two crossbeams is connected with a connection piece, the other end of two crossbeams
It is connected with another connector.
After above structure, the present invention compared with prior art, with advantages below：
During portable comprehensive mechanics demonstrator test twisting resistance of the present invention, it is only necessary to pull the first twist grip with hand, i.e.,
Can drive successively fixing clip, lining bar and produce twisting resistance.During test tensile force or compression stress, it is only necessary to reverse the second torsion handle
Hand, is rotated axle rotation so that rotary shaft acts power and causes lining bar deformation with fixed mount fixture block, and then produces stretching
Power or compression stress.During test bending force, it is only necessary to rotate the 3rd twist grip, you can drive connecting shaft, rotation shaft holder to slide
Move and cause lining bar deformation and produce bending force.The present invention can also install at least six foil gauges on lining bar, and will strain
The signal that piece is produced is sent to microcomputer development plate by signal processing circuit, microcomputer development plate by analog signal change to
Data signal, is sent to PC and is shown finally by radio receiving transmitting module, so that teaching is more directly perceived.The present invention is just
Taking formula synthesis mechanics demonstrator can carry out the test of twisting resistance, bending force and tensile force and compression stress, therefore in teaching
Only need to carry an instrument, facilitate in the extreme.Meanwhile, relative to three instruments of purchase, it need to buy one and can be achieved with
The effect of above three instrument, so as to reduce the financial burden of school.Meanwhile, the instrument also has small volume, light weight
Advantage.
Brief description of the drawings
Fig. 1 is the structural representation of portable comprehensive mechanics demonstrator of the present invention.
Fig. 2 is the configuration schematic diagram that moment of torsion produces component.
Fig. 3 is foil gauge mounting structure schematic diagram.
Fig. 4 is the circuit theory diagrams of the first bridge rectifier.
Fig. 5 is the circuit theory diagrams of the first bridge rectifier.
Fig. 6 is the circuit block diagram of portable comprehensive mechanics demonstrator of the present invention.
1, base shown in figure, 2, fixed mount, 2.1, column, 2.2, crossbeam, 2.3, connector, 3, lining bar, 4, geometrical clamp
Block, 4.1, fixture block, the 5, first twist grip, the 6, second twist grip, 7, rotary shaft, 8, rotary shaft fixed block, 9, connection rotating shaft,
10th, the 3rd twist grip, 11, stopper slot, 12, cylindrical element, 13, semi-circular hole, 14, fixed plate, 15, unilateral bearing, 16, wedge
Shape limited block, 17, bolt retainer, 18, mounting hole, 19, spacing ring, 20, foil gauge, 21, limited block.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of portable comprehensive mechanics demonstrator of the invention, including base
1st, fixed mount 2, lining bar 3, at least six foil gauges 20, force application apparatus, the signal processing circuit for processing the signal of foil gauge 20,
Computer and projector equipment；At least six described foil gauges 20 are installed on lining bar 3；At least six described foil gauges
20 electrically connect with the input of signal processing circuit, output end and the calculating mechatronics of the signal processing circuit；Described
Computer is also electrically connected with projector equipment；Described fixed mount 2, force application apparatus is installed on base 1；Described force application apparatus
Also it is arranged on fixed mount 2；The described lower end of lining bar 3 is fixed on base 1, and the described upper end of lining bar 3 is fixed on fixed mount 2
On.Mounting means on lining bar of at least six foil gauges 20 as shown in figure 3, six foil gauges 20 be respectively Ra, Rb, Rc,
Ra ', Rb ', Rc ', their resistance is；Angle wherein between Ra, Rc and Rb is 45 degree, between Ra ', Rc ' and Rb '
Angle be 45 degree；Tri- foil gauges 20 of Ra, Rb, Rc and Ra ', Rb ', three foil gauges 20 of Rc ' are respectively with the axis of lining bar
Central Symmetry is set.
Described force application apparatus produce component, pressure to produce component, moment of flexure to produce component to constitute by moment of torsion；Described torsion
Square produces component that a fixture block of fixing clip 4 is fixedly mounted on including a fixing clip 4, at least one first twist grips 5,
Cylindrical element 12 and one on 4.1 is arranged on moment of torsion on cylindrical element 12 from lock set, and wherein fixing clip 4 is by two fixture blocks
4.1 compositions, one of fixture block 4.1 is connected with the lower end of cylindrical element 12；Described moment of torsion also horizontally slips cooperation from lock set
On fixed mount 2；Described fixing clip 4 is arranged on the upper end of lining bar 3, is fixed by two fixture blocks 4.1；The first described torsion
Handle 5 is arranged in fixing clip 4, in the present embodiment, there is two the first twist grips 5, is separately mounted to two fixture blocks 4.1
On；Described pressure produces component to be slidably fitted on fixed mount 2 including one second twist grip 6, rotary shaft 7 and two
Rotary shaft fixed block 8, cylindrical element 12 be a cylindrical type part, inside be provided with one be threadedly coupled with the lower end of rotary shaft 7 lead to
Hole；In the present embodiment, two rotary shaft fixed blocks 8 are slidably fitted on two crossbeams 2.2；Described rotary shaft 7 is rotated matches somebody with somebody
Close in two rotary shaft fixed blocks 8, in the present embodiment, two relative semicircles are respectively equipped with two rotary shaft fixed blocks 8
Shape hole 13, rotary shaft 7 is provided with and is rotatably assorted in two semi-circular holes 13；The second described twist grip 6 is fixed on rotation
The upper end of axle 7；The lower end of the rotary shaft 7 is threadedly coupled with cylindrical element 12, i.e., the lower end of rotary shaft 7 can screw in cylindrical element 12
In through hole；Described moment of flexure produces component to be rotatably assorted the twist grip of connection rotating shaft 9 and the 3rd on fixed mount 2 including one
10；One end of the connection rotating shaft 9 is connected with the 3rd twist grip 10, and the other end of the connection rotating shaft 9 passes through a rotary shaft
Fixed block 8 offsets with rotary shaft 7.Wherein, lining bar 3 is commercially available nylon rod.
Described moment of torsion includes two pieces of left and right fixed plate 14, a unilateral bearing 15 and a wedge-shaped limited block from lock set
16；Described unilateral bearing 15 is socketed on cylindrical element 12；Described unilateral bearing 15 passes through wedge-shaped limited block with cylindrical element 12
16 are mutually rotated with limiting unilateral bearing 15 with cylindrical element 12, i.e., unilateral bearing 15 and cylindrical element 12 are equipped with two and are limited for wedge shape
The hole of the position insertion of block 16, described wedge-shaped limited block 16 is embedded in hole；Two pieces of described fixed plates 14 are a tight fit in unilateral bearing
Outside 15, i.e., two pieces fixed blocks 14 are respectively provided with a semicircular indentations, and two semicircular indentations can jointly coordinate clamping unilateral bearing, together
When unilateral bearing 15 outside be provided with limited block 21, stopper slot 11 is provided with semicircular indentations, described limited block 21 is embedded in spacing
In groove 11；Two pieces of described fixed plates 14 are fixedly connected by two bolt retainers 17；Two pieces of described fixed plates 14 also left side
The right side is slidably fitted on fixed mount 2, in the present embodiment, two mounting holes 18 is respectively equipped with two pieces of fixed plates 14, and four are stood
Post 2.1 is slidably fitted in four mounting holes 18 respectively, and it is spacing that each is additionally provided with one on the column 2.1 of the lower section of mounting hole 18
Ring 19, with to preventing two pieces of fixed plates 14 from falling.
As shown in Fig. 4, Fig. 5, Fig. 6, described signal processing circuit includes signal amplifier, microcomputer development plate, first
Bridge rectifier, the second bridge rectifier；Described the first bridge rectifier, the second bridge rectifier is and signal
Amplifier is electrically connected, and described signal amplifier is electrically connected with microcomputer development plate.First bridge rectifier, the second bridge-type are whole
Current circuit is distinguished shown in Fig. 4, Fig. 5.Signal amplifier and microcomputer development plate are commercially available prod.
Described fixed mount 2 includes four root posts, 2.1, two crossbeams 2.2 and two connectors 2.3；Described four are stood
The lower end of post 2.1 is fixed on base 1, and wherein two upper ends in four root post 2.1 are connected with a connection piece 2.3, institute
Other two upper ends stated in four root posts 2.1 are connected with another connector 2.3；One end of two crossbeams 2.2 connects with one
Fitting 2.3 is connected, and the other end of two crossbeams 2.2 is connected with another connector 2.3.
Below only highly preferred embodiment of the present invention is described, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above example, and its concrete structure allows to change.In every case in the protection model of independent claims of the present invention
Enclose interior made various change within the scope of the present invention.
Claims (4)
1. a kind of portable comprehensive mechanics demonstrator, it is characterised in that：Including base (1), fixed mount (2), lining bar (3), at least
Six foil gauges (20), force application apparatus, the signal processing circuit for processing foil gauge (20) signal, computer and projection set
It is standby；At least six described foil gauges (20) are installed on lining bar (3)；At at least six described foil gauges (20) and signal
Manage the input electrical connection of circuit, output end and the calculating mechatronics of the signal processing circuit；Described computer also with
Projector equipment is electrically connected；Described fixed mount (2), force application apparatus are installed on base (1)；Described force application apparatus are also installed
On fixed mount (2)；Described lining bar (3) lower end is fixed on base (1), and described lining bar (3) upper end is fixed on fixed mount
(2) on, described force application apparatus produce component, pressure to produce component, moment of flexure to produce component to constitute by moment of torsion；Described moment of torsion
Producing component includes that a fixing clip (4), at least one first twist grips (5), one are fixedly mounted on the one of fixing clip (4)
Cylindrical element (12) on fixture block (4.1) and one it is arranged on moment of torsion on cylindrical element (12) from lock set；Described moment of torsion self-locking
Component also horizontally slips cooperation on fixed mount (2)；Described fixing clip (4) is installed in lining bar (3) upper end；Described first
Twist grip (5) is in fixing clip (4)；Described pressure produces component including one second twist grip (6), rotates
The rotary shaft fixed block (8) that axle (7) and two are slidably fitted on fixed mount (2), described rotary shaft (7) is rotatably assorted
In two rotary shaft fixed blocks (8)；Described the second twist grip (6) is fixed on the upper end of rotary shaft (7)；The rotary shaft
(7) lower end is threadedly coupled with cylindrical element (12)；Described moment of flexure produces component to be rotatably assorted on fixed mount (2) including one
Connection rotating shaft (9) and the 3rd twist grip (10)；One end of the connection rotating shaft (9) is connected with the 3rd twist grip (10),
The other end of the connection rotating shaft (9) offsets through a rotary shaft fixed block (8) with rotary shaft (7).
2. portable comprehensive mechanics demonstrator according to claim 1, it is characterised in that：Described moment of torsion is from lock set bag
Include two pieces of left and right fixed plate (14), a unilateral bearing (15) and a wedge-shaped limited block (16)；Described unilateral bearing (15) set
It is connected on cylindrical element (12)；Described unilateral bearing (15) and cylindrical element (12) are by wedge-shaped limited block (16) limiting one-way shaft
(15) are held mutually to be rotated with cylindrical element (12)；Two pieces of described fixed plates (14) are a tight fit in unilateral bearing (15) outward；Described
Two pieces of fixed plates (14) are fixedly connected by two bolt retainers (17)；Two pieces of described fixed plates (14) also horizontally slip and match somebody with somebody
Close on fixed mount (2).
3. portable comprehensive mechanics demonstrator according to claim 1, it is characterised in that：Described signal processing circuit bag
Include signal amplifier, microcomputer development plate, the first bridge rectifier, the second bridge rectifier；The first described bridge-type is whole
Current circuit, the second bridge rectifier are electrically connected with signal amplifier, described signal amplifier and microcomputer development plate electricity
Connection.
4. portable comprehensive mechanics demonstrator according to claim 1, it is characterised in that：Described fixed mount (2) includes
Four root posts (2.1), two crossbeams (2.2) and two connectors (2.3)；The lower end of four root post (2.1) is fixed on
On base (1), wherein two upper ends in four root post (2.1) are connected with a connection piece (2.3), four root post
(2.1) other two upper ends in are connected with another connector (2.3)；One end of two crossbeams (2.2) and a connection piece
(2.3) connect, the other end of two crossbeams (2.2) is connected with another connector (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510237212.6A CN104900115B (en) | 2015-05-12 | 2015-05-12 | Portable comprehensive mechanics demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510237212.6A CN104900115B (en) | 2015-05-12 | 2015-05-12 | Portable comprehensive mechanics demonstrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104900115A CN104900115A (en) | 2015-09-09 |
| CN104900115B true CN104900115B (en) | 2017-07-07 |
Family
ID=54032753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510237212.6A Expired - Fee Related CN104900115B (en) | 2015-05-12 | 2015-05-12 | Portable comprehensive mechanics demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104900115B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225633A (en) * | 2016-08-30 | 2016-12-14 | 苏州华宇精密铸造有限公司 | A kind of metering device for the assembling of turbine blade seat |
| CN106952563A (en) * | 2017-05-16 | 2017-07-14 | 重庆科技学院 | A kind of antitorque teaching demonstration device of steel member |
| CN112834324A (en) * | 2021-01-11 | 2021-05-25 | 武汉科技大学 | Portable tension-compression-shear stress applying device |
Citations (8)
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|---|---|---|---|---|
| RU2052218C1 (en) * | 1990-12-19 | 1996-01-10 | Серпуховское высшее военное командно-инженерное училище ракетных войск им.Ленинского комсомола | Structural mechanics educational aid |
| CN101303813A (en) * | 2008-01-30 | 2008-11-12 | 烟台大学 | Structure mechanics combined experimental device |
| CN101915699A (en) * | 2010-06-22 | 2010-12-15 | 中国矿业大学 | Movable type loading device in any direction |
| KR20110123365A (en) * | 2010-05-07 | 2011-11-15 | 주식회사 서울과학기기 | Dynamics experiment equipment using pushpull gauge |
| CN102184664B (en) * | 2010-11-30 | 2013-01-09 | 南京航空航天大学 | Replication experiment device and method for distribution rule of shearing stress |
| CN103761910A (en) * | 2014-01-13 | 2014-04-30 | 河海大学 | Structural mechanics displacement method experimental device and structural mechanics displacement method presentation method |
| CN104269087A (en) * | 2014-08-02 | 2015-01-07 | 薛倩 | Shaft part stress analysis training aid |
| CN104299483A (en) * | 2014-09-29 | 2015-01-21 | 安徽农业大学 | Bridge type Young modulus combined instrument |
-
2015
- 2015-05-12 CN CN201510237212.6A patent/CN104900115B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2052218C1 (en) * | 1990-12-19 | 1996-01-10 | Серпуховское высшее военное командно-инженерное училище ракетных войск им.Ленинского комсомола | Structural mechanics educational aid |
| CN101303813A (en) * | 2008-01-30 | 2008-11-12 | 烟台大学 | Structure mechanics combined experimental device |
| KR20110123365A (en) * | 2010-05-07 | 2011-11-15 | 주식회사 서울과학기기 | Dynamics experiment equipment using pushpull gauge |
| CN101915699A (en) * | 2010-06-22 | 2010-12-15 | 中国矿业大学 | Movable type loading device in any direction |
| CN102184664B (en) * | 2010-11-30 | 2013-01-09 | 南京航空航天大学 | Replication experiment device and method for distribution rule of shearing stress |
| CN103761910A (en) * | 2014-01-13 | 2014-04-30 | 河海大学 | Structural mechanics displacement method experimental device and structural mechanics displacement method presentation method |
| CN104269087A (en) * | 2014-08-02 | 2015-01-07 | 薛倩 | Shaft part stress analysis training aid |
| CN104299483A (en) * | 2014-09-29 | 2015-01-21 | 安徽农业大学 | Bridge type Young modulus combined instrument |
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| Publication number | Publication date |
|---|---|
| CN104900115A (en) | 2015-09-09 |
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Granted publication date: 20170707 Termination date: 20190512 |