CN106530932A - Two-side projection demonstration board with space model for flexile-traction straight lines - Google Patents
Two-side projection demonstration board with space model for flexile-traction straight lines Download PDFInfo
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- CN106530932A CN106530932A CN201611134918.0A CN201611134918A CN106530932A CN 106530932 A CN106530932 A CN 106530932A CN 201611134918 A CN201611134918 A CN 201611134918A CN 106530932 A CN106530932 A CN 106530932A
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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
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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Abstract
The invention relates to a two-side projection demonstration board with a space model for flexible-traction straight lines. The two-side projection demonstration board comprises a projection board, space straight line model mechanism, a projection connection mechanism, a straight line projection mechanism and a linkage mechanism. On the basis of an original two-side projection demonstration board for flexible-traction straight lines, the two-side projection demonstration board provided by the invention is additionally provided with a space model and adopts a structure in which the straight line space model is in linkage with straight line projection, thereby being capable of more visually showing a relation between the change in position of the space straight line and the change in projection of the space straight line. The two-side projection demonstration board is convenient to operate, horizontal projection of a moving point can be pulled automatically by only controlling front projection of the moving point in use, and seven positions such as a frontal line, a horizontal line, a profile line, a normal line, a plumb line, a frontal-horizontal line and a slope line of the space straight line can be demonstrated. The demonstration effect is significantly improved. The straight line two-side projection demonstration board is enabled to be more perfect.
Description
Technical field
The present invention relates to a kind of flexibility of the carrying space model used by demonstration teaching aid, especially Engineering Drawing Course is led
Draw straight line two*.plane projection demonstration board.
Background technology
In Engineering Drawing Course, represent that the locus of straight line are determined typically by the projection on two perspective planes, i.e.,
The front projection of straight line and floor projection, straight line are represented by the straightway comprising two end points, it is desirable to must assure that same end
The front projection of point and the line vertical X axis of floor projection.Space line has seven kinds of situations with respect to the position on perspective plane, is respectively
Frontal line, horizontal line, profile line, vertical frontal line, plumb line, vertical profile line and parallax, in Engineering Drawing Course teaching, need to use
Front projection and floor projection demonstrate this seven kinds of straight lines respectively.At present, demonstrating this seven kinds of straight lines is taught using seven mock-ups
Have or its two*.plane projection figure is drawn on blackboard（Front projection and floor projection）.If adopting mock-up teaching aid, often
A kind of teaching aid is all changeless, and which has the disadvantage bulky, carrying, mobile and suspension inconvenience, if using in blackboard
On draw its two*.plane projection figure, need the more time, take larger blackboard space, and dynamic demonstration effect is bad.Affect
Quality of instruction.Author is front inventing flexible drawing straight line two*.plane projection demonstration board（2016103993227）, although solve
State problem, but no linear space model, it is impossible to lively direct presentation space straight line change and corresponding projection change.
The content of the invention
In order to solve the above problems, the present invention provides a kind of flexible drawing straight line two*.plane projection demonstration of carrying space model
Plate, the present invention add spatial model and on the basis of former flexible drawing straight line two*.plane projection demonstration board using linear space mould
The structure of type and linear projection linkage, more manifests the relation of the change that the change in location of space line is projected with which, makes straight line two
Face projection demonstration plate is more perfect.
The technical solution adopted for the present invention to solve the technical problems is：Throw on the flexible drawing straight line two sides of carrying space model
Shadow demonstration board includes projection plate, space line model mechanism, projection join line mechanism, mechanism of linear projection and link gear.
Projection plate is one piece of thin plate, and its front is provided with X-axis, is frontal plane of projection above X-axis, is floor projection below X-axis
Face.If the right endpoint of space line section is fixed point, left end point is moving point.On projection plate, the frontal plane of projection of fixed point and level are thrown
Shadow is respectively equipped with fixed point groove, and fixed point groove is ladder circular hole.Fixed point projection is provided between the frontal plane of projection and floor projection of fixed point
Line.
Space line model mechanism includes that fixed point frame, fixed point frame bearing, fixed point pole, fixed point ball, fixed point axle, space are straight
Line, moving point ball, guide rod, pin, guide rod cap.Fixed point frame is fixed on projection plate by screw, and fixed point frame is by Z-shaped plate and cylinder structure
Into cylinder is provided with shoulder hole, shoulder hole installs fixed point frame bearing, is provided with fixed point pole, pinpoints pole in fixed point frame bearing
The other end be cut into flat；Fixed point ball cuts with fixed point ball groove, and the flat contact surface for pinpointing ball groove with fixed point pole is that gap coordinates,
The flat and fixed point round bur of fixed point pole has through hole, and fixed point axle is provided with through hole, and fixed point axle connects fixed point pole and fixed point ball
Connect together, fixed point ball can be rotated around fixed point pole.Fixed point ball is fixedly connected one end of space line, and the space line other end is fixed
Connection moving point ball, moving point ball are provided with moving point ball groove, moving point ball groove and include guide rod, and guide rod is cylindrical tube；Moving point ball and guide rod by
Pin connects, and guide rod is provided with stem guiding trough, and pin can make moving point ball movable along guide rod in slide anteroposterior in stem guiding trough；Guide rod
The cylindrical hole of rear end is shut by thin-walled, and in-line hole is cut at thin-walled, is connected to the front projection of moving point with in-line hole, leads
Bar is always perpendicular to perspective plane.
Projection join line mechanism includes pan carriage, change gear, change gear axle, pulley, pulley spindle, flexible strand, rope support and rope support screw.
Pan carriage is c-type strip structure, and pan carriage upper end is hooked on frontal plane of projection upper end, and pan carriage lower end is hooked under horizontal plane
End, pan carriage upper end are provided with change gear axle, and change gear axle is provided with change gear, and change gear rides over projection plate upper end.Behind projection plate, put down
Move frame top and bottom and be respectively equipped with pulley spindle, pulley spindle is provided with pulley, and pulley is provided with two slideways, and each slideway respectively winds
There is a flexible strand, flexible strand has two, and one end of flexible strand is fixed on the rope support of upper end side of projection plate；Rope support is altogether
There are 4, be respectively provided with the side at four angles in perspective plane, be fixed on projection plate by rope support screw.Flexible strand is bypassed above
Pulley, bypasses following pulley still further below, and the other end of flexible strand is fixed on the rope support of lower end opposite side of projection plate, another
The fixation of bar flexible strand and trend are symmetrical with previous bar flexible strand, and two flexible strands are contrary with the winding direction of same pulley.It is flat
Moving and bar shaped locating slot is provided with frame, locating slot is oblong-shaped；Chute is provided with locating slot, chute is strip, narrower than locating slot；
Pan carriage can only be moved left and right on projection plate.
Mechanism of linear projection includes fixed point, moving point and projection join line.Fixed point includes that pinpointing front projection and point level throws
Shadow, each projection are made up of fixed point bearing, rotating shaft, fixed point wind spring and linear projection, be provided with fixed point bearing, pinpoint in fixed point groove
Bearing inner race is installed with rotating shaft, and rotating shaft is provided with fixed point wind spring, and the inner for pinpointing wind spring is connected with rotating shaft, pinpoints wind spring
Outer end is connected with linear projection, and linear projection is flexible thin strip, is divided into straight line front projection and straight horizontal projection, and straight line is thrown
On fixed point wind spring, the other end is reached on projection plate shadow one ends wound, is connected with moving point；At point level projection, fixed point
Bearing inner race is equipped with point level projection hat, and point level projection hat is provided with fixed point opening, and linear projection is by pinpointing opening
Reach on projection plate, be connected with moving point floor projection.Moving point includes moving point front projection and moving point floor projection, each projection
It is made up of slide block, moving point projection fixture block, pin, moving point shell, moving point projection join line and moving point cap.Slide block is cuboid and cylinder
Assembly, has cylindrical hole in the cylinder of slide block, two moving point projection fixture blocks are provided with hole, and moving point projection fixture block is half stepped cylindrical
Shape, two moving point projection fixture blocks connect into stepped cylindrical by pin, and moving point projection fixture block can be rotated in the cylindrical hole of slide block；It is dynamic
Spot projection fixture block transfer point front projection fixture block and moving point floor projection fixture block, moving point front projection fixture block is than moving point floor projection
Fixture block is inserted in the yi word pattern hole of guide rod and is connected with guide rod in many T-shape blocks in front end, T-shape block.The cuboid of slide block
It is put in the locating slot of pan carriage, slide block can be slided up and down in locating slot, and the cylinder of slide block is put in the chute of pan carriage.Two
Linear projection is clamped in contact surface between individual moving point projection fixture block, is connected with pin.Moving point front projection is provided with moving point
Wind spring, the inner of moving point wind spring are connected with the cylinder of slide block, and the outer end of moving point wind spring is connected with moving point projection join line, moving point projection
Moving point front projection shell is provided with the outside of line, moving point front projection shell lower end is provided with circular hole, and moving point projection join line passes through circular hole
Moving point floor projection shell is connected to, and is fixed on moving point floor projection shell.In the presence of moving point wind spring, projected by moving point
Line always gives one pulling force of moving point floor projection shell.Moving point cap is divided into moving point front projection cap and moving point floor projection cap, moves
Point cap is by tight fit connection on moving point shell.
Link gear include pin, guide rod, pipe cut, flexible pipe, pipe ring frame, flexible pipe support, steel wire rope, wire rope pulley,
Steel wire rope support, wire rope pulley axle.It is provided with pipe to cut in the pipe of guide rod, it is lamellar that pipe cuts, is one with guide rod；One end of flexible pipe
It is fixed on pipe to cut, pipe ring frame is fixed on moving point front projection shell, and flexible pipe support is fixed in the middle part of pan carriage, and flexible pipe is passed through
Stem guiding trough guides to the outside of guide rod, through pipe ring frame, is fixed on flexible pipe support top.The length of flexible pipe depends on space line
Corresponding length when being plumb line.Steel wire rope support is fixed on below pan carriage by screw, and steel wire rope support is provided with wire rope pulley
Axle, is cased with wire rope pulley on wire rope pulley axle；Steel wire rope is provided with flexible pipe, steel wire rope can be moved in flexible pipe.Steel
One end of cord is fixed on the pin of moving point ball, through flexible pipe, moving point floor projection shell is passed through below flexible pipe support, then
Wire rope pulley is bypassed, it is following that u-turn is fixed on moving point floor projection shell.During with moving moving point ball down on hand, drive pan carriage left
Move right, while the front projection of moving point is servo-actuated up and down, and the floor projection of moving point is only moved left and right with pan carriage, it is impossible to
Move up and down；During with moving moving point ball before and after handss, pan carriage is driven to move left and right, while front projection of moving point or so is servo-actuated,
And the floor projection of moving point is while move left and right with pan carriage, moreover it is possible to move up and down；This is due to moving forward moving point ball, moving
The pin of penalty kick pulls steel wire rope reach, drives moving point floor projection to move down by steel wire rope, when moving moving point ball backward, moving point volume
Spring hauls moving point floor projection shell upwards, moves after the steel wire rope at pipe section, and under moving point floor projection, upper amount of movement is exactly equal to move
The movable amount of penalty kick；Meet projection law.When moving up and down moving point ball, it is impossible to move steel wire rope relative flexibility pipe, therefore
Floor projection is not moved up and down.So as to realize that the position of moving point ball and the position of moving point floor projection are linked.The length of steel wire rope
Corresponding length when degree is vertical profile line depending on space line.
The invention has the beneficial effects as follows：Using space line model mechanism and the structure of linear projection's linkage, more intuitively show
The relation of the change that the change in location of existing space line is projected with which.It is easy to operate, as long as the front projection of control moving point, automatically
Moving point floor projection is affected, 7 kinds of positions of straight line can be shown.Demonstrating effect is obviously improved.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the integrally-built above axonometric chart of expression.
Fig. 2 is the integrally-built rear isometric view of expression.
Fig. 3 is front view.
Fig. 4 is the left view on Fig. 3 along AA cuttings.
Fig. 5 is the rearview on Fig. 4 along EE cuttings.
Fig. 6 is on Fig. 3 tiltedly to cut open partial view along BB cuttings.
Fig. 7 is the rearview on Fig. 4 along FF cuttings.
Fig. 8 is on Fig. 3 tiltedly to cut open partial view of becoming a full member along CC cuttings.
Fig. 9 is the partial sectional view on Fig. 8 along DD cuttings.
Figure 10 is the partial sectional view on Fig. 4 along GG cuttings.
Figure 11 be I on Fig. 4 at partial enlarged drawing.
Figure 12 be II on Fig. 4 at partial enlarged drawing.
Figure 13 be III on Fig. 7 at partial enlarged drawing.
Figure 14 is the embodiment of horizontal line projection.
Figure 15 is the embodiment of frontal line projection.
Figure 16 is the embodiment of profile line projection.
Figure 17 is the embodiment of vertical line projection.
Figure 18 is the embodiment of vertical frontal line projection.
Figure 19 is the embodiment of vertical profile line projection.
1. rope support screw in figure, 2. rope support, 3. change gear axle, 4. pan carriage, 5. chute, 6. flexible pipe, 7. guide rod cap, 8. moves
Penalty kick, 9. space line 10. pinpoint ball, 11. fixed point framves, 12. fixed point projection join lines, 13. X-axis, 14. flexible pipe supports, and 15.
Moving point projection join line, 16. point level projection hats, the projection of 17. straight horizontals, 18. moving point floor projection caps, 19. projections
Plate, 20. steel wire ropes, 21. steel wire rope supports, 22. moving point front projection shells, 23. straight line front projections, 24. fixed point frame bearings, 25.
Fixed point groove, 26. fixed point poles, 27. guide rods, 28. moving point ball grooves, 29. moving point front projection caps, 30. moving point floor projections
Shell, 31. wire rope pulleys, 32. change gears, 33. stem guiding troughs, 34. fixed point bearings, 35. flexible strands, 36. pulley spindles, 37. slide
Wheel, 38. slide blocks, 39. moving point front projection fixture blocks, 40. moving point floor projection fixture blocks, 41. pipes cut, 42. fixed point ball grooves, and 43.
Pin, 44. wire rope pulley axles, 45. pins, 46. moving point wind springs, 47. fixed point wind springs, 48. rotating shafts, 49. pipe ring framves,
50. locating slots, 51. fixed point axles.
Specific embodiment
In Fig. 1 to Figure 13, connection and the position relationship of the contexture and parts of the present invention, and parallax are represented
Embodiment.The flexible drawing straight line two*.plane projection demonstration board of carrying space model includes projection plate（19）, space line prototype
Structure, projection join line mechanism, mechanism of linear projection and link gear.
Projection plate（19）It is one piece of thin plate, its front is provided with X-axis line（13）, X-axis line（13）Top is orthographic projection
Face, X-axis line（13）Lower section is horizontal plane.If the right endpoint of space line section is fixed point, left end point is moving point.In projection
Plate（19）On, the frontal plane of projection and floor projection of fixed point are respectively equipped with fixed point groove（25）, pinpoint groove（25）It is ladder circular hole.Fixed
Fixed point projection join line is provided between the frontal plane of projection and floor projection of point（12）.
Space line model mechanism includes pinpointing frame（11）, fixed point frame bearing（24）, fixed point pole（26）, fixed point ball
（10）, fixed point axle（51）, space line（9）, moving point ball（8）, guide rod（27）, pin（43）, guide rod cap（7）.Fixed point frame（11）
Projection plate is fixed on by screw（19）On, pinpoint frame（11）It is made up of Z-shaped plate and cylinder, cylinder is provided with shoulder hole, in shoulder hole
Fixed point frame bearing is installed（24）, pinpoint frame bearing（24）Fixed point pole is inside installed（26）, pinpoint pole（26）The other end cut
Into flat；Fixed point ball（10）Cut with fixed point ball groove（42）, pinpoint ball groove（42）With fixed point pole（26）Flat contact surface be between
Gap coordinates, and pinpoints pole（26）Flat and fixed point ball（10）Through hole is drilled with, fixed point axle is installed in through hole（51）, pinpoint axle
（51）Fixed point pole（26）With fixed point ball（10）Connect, pinpoint ball（10）Can be around fixed point pole（26）Rotate.Fixed point ball
（10）It is fixedly connected space line（9）One end, space line（9）The other end is fixedly connected moving point ball（8）, moving point ball（8）If
There is moving point ball groove（28）, moving point ball groove（28）It is interior comprising guide rod（27）, guide rod（27）It is cylindrical tube；Moving point ball（8）And guide rod
（27）By pin（43）Connection, guide rod（27）It is provided with stem guiding trough（33）, pin（43）Can be in stem guiding trough（33）Interior slide anteroposterior, makes
Moving point ball（8）Along guide rod（27）It is movable；Guide rod（27）The cylindrical hole of rear end is shut by thin-walled, at thin-walled is cut into in-line
Hole, is connected to the front projection of moving point, guide rod with in-line hole（27）Always perpendicular to perspective plane.
Projection join line mechanism includes pan carriage（4）, change gear（32）, change gear axle（3）, pulley（37）, pulley spindle（36）, it is flexible
Rope（35）, rope support（2）With rope support screw（1）.Pan carriage（4）It is c-type strip structure, pan carriage（4）Upper end is hooked on orthographic projection
Face upper end, pan carriage（4）Hook in horizontal plane lower end, pan carriage lower end（4）Upper end is provided with change gear axle（3）, change gear axle（3）
It is provided with change gear（32）, change gear（32）Ride over projection plate（19）Upper end.In projection plate（19）Behind, pan carriage（4）Upper end and
Lower end is respectively equipped with pulley spindle（36）, pulley spindle（36）It is provided with pulley（37）, pulley（37）It is provided with two slideways, each slideway
A flexible strand is wound with respectively（35）, flexible strand（35）Two are had, flexible strand（35）One end be fixed on projection plate（19）'s
The rope support of upper end side（2）On；Rope support（2）4 are had, is respectively provided with the side at four angles in perspective plane, by rope support screw（1）
It is fixed on projection plate（19）On.Flexible strand（35）Bypass pulley above（37）, following pulley is bypassed still further below（37）, it is flexible
Rope（35）The other end be fixed on projection plate（19）Lower end opposite side rope support（2）On, another flexible strand（35）Fixation
With trend and previous bar flexible strand（35）Symmetrically, two flexible strand（35）With same pulley（37）Winding direction it is contrary.Translation
Frame（4）On be provided with bar shaped locating slot（50）, locating slot（50）It is oblong-shaped；Locating slot（50）Chute is provided with inside（5）, chute
（5）It is strip, compares locating slot（50）It is narrow；Pan carriage（4）Can only be in projection plate（19）On move left and right.
Mechanism of linear projection includes fixed point, moving point and projection join line.Fixed point includes that pinpointing front projection and point level throws
Shadow, each projection is by fixed point bearing（34）, rotating shaft（48）, fixed point wind spring（47）Constitute with linear projection, pinpoint groove（25）Interior peace
Equipped with fixed point bearing（34）, pinpoint bearing（34）Inner ring is installed with rotating shaft（48）, rotating shaft（48）It is provided with fixed point wind spring
（47）, pinpoint wind spring（47）Inner and rotating shaft（48）Connection, pinpoints wind spring（47）Outer end be connected with linear projection, straight line throw
Shadow is flexible thin strip, is divided into straight line front projection（23）Project with straight horizontal（17）, linear projection's one ends wound is in fixed point
Wind spring（47）On, the other end reaches projection plate（19）On, it is connected with moving point；At point level projection, bearing is pinpointed（34）
Inner ring is equipped with point level projection hat（16）, point level projection hat（16）Fixed point opening is provided with, linear projection is by fixed point
Opening reaches projection plate（19）On, it is connected with moving point floor projection.Moving point includes moving point front projection and moving point floor projection,
Each projection is by slide block（38）, moving point projection fixture block, pin（45）, moving point shell, moving point projection join line（15）Constitute with moving point cap.
Slide block（38）It is the assembly of cuboid and cylinder, slide block（38）Cylinder in have cylindrical hole, the projection of two moving points is provided with hole
Fixture block, moving point projection fixture block are half ladder circle cylindricalitys, and two moving points projection fixture blocks are by pin（45）Connect into stepped cylindrical, moving point
Projection fixture block can be in slide block（38）Cylindrical hole in rotation；Moving point projects fixture block transfer point front projection fixture block（39）With moving point water
Flat projection fixture block（40）, moving point front projection fixture block（39）Than moving point floor projection fixture block（40）In many T-shape blocks in front end,
T-shape block is inserted into guide rod（27）Yi word pattern hole in and guide rod（27）It is connected.Slide block（38）Cuboid be put into pan carriage（4）
Locating slot（50）It is interior, slide block（38）Can be in locating slot（50）Inside slide up and down, slide block（38）Cylinder be put into pan carriage（4）'s
Chute（5）It is interior.Linear projection is clamped in contact surface between two moving point projection fixture blocks, pin is used（45）It is connected.Moving point
Front projection is provided with moving point wind spring（46）, moving point wind spring（46）Inner and slide block（38）Cylinder connection, moving point wind spring（46）
Outer end and moving point projection join line（15）Connection, moving point projection join line（15）Outside be provided with moving point front projection shell（22）, move
Point front projection shell（22）Lower end is provided with circular hole, moving point projection join line（15）Moving point floor projection shell is connected to by circular hole
（30）, and it is fixed on moving point floor projection shell（30）On.In moving point wind spring（46）In the presence of, by moving point projection join line（15）
Moving point floor projection shell is given always（30）One pulling force.Moving point cap is divided into moving point front projection cap（29）With moving point floor projection cap
（18）, moving point cap is by tight fit connection on moving point shell.
Link gear includes pin（43）, guide rod（27）, pipe cut（41）, flexible pipe（6）, pipe ring frame（49）, flexible pipe support
（14）, steel wire rope（20）, wire rope pulley（31）, steel wire rope support（21）, wire rope pulley axle（44）.Guide rod（27）Pipe in set
There is pipe to cut（41）, pipe section（41）It is lamellar, with guide rod（27）It is one；Flexible pipe（6）One end be fixed on pipe cut（41）On, pipe
Ring stand（49）It is fixed on moving point front projection shell（22）On, flexible pipe support（14）It is fixed on pan carriage（4）Middle part, flexible pipe（6）
Through stem guiding trough（33）Guide to guide rod（27）Outside, through pipe ring frame（49）, it is fixed on flexible pipe support（14）Top.Flexible pipe
（6）Length depend on space line（9）Corresponding length when being plumb line.Steel wire rope support（21）Pan carriage is fixed on by screw
（4）Lower section, steel wire rope support（21）Wire rope pulley axle is installed（44）, wire rope pulley axle（44）On be cased with wire rope pulley
（31）；Flexible pipe（6）In be provided with steel wire rope（20）, steel wire rope（20）Can be in flexible pipe（6）Middle movement.Steel wire rope（20）One end
It is fixed on moving point ball（8）Pin（43）On, through flexible pipe（6）, in flexible pipe support（14）Lower section passes through moving point floor projection
Shell（30）, further around wire rope pulley excessively（31）, reverse end for end to be fixed on moving point floor projection shell（30）Below.With moving moving point down on hand
Ball（8）When, drive pan carriage（4）Move left and right, while the front projection of moving point is servo-actuated up and down, and the floor projection of moving point
Only with pan carriage（4）Move left and right, it is impossible to move up and down；With moving moving point ball before and after handss（8）When, drive pan carriage（4）Left and right
Mobile, while front projection of moving point or so is servo-actuated, and the floor projection of moving point is with pan carriage（4）While moving left and right, also
Can move up and down；This is due to moving forward moving point ball（8）, moving point ball（8）Pin（43）Pull steel wire rope（20）Reach, by
Steel wire rope（20）Drive moving point floor projection to move down, move moving point ball backward（8）When, moving point wind spring（46）Haul the throwing of moving point level
Shadow shell（30）Upwards, pipe cuts（41）The steel wire rope at place（20）After move, under moving point floor projection, upper amount of movement is exactly equal to moving point ball
（8）Movable amount；Meet projection law.Move up and down moving point ball（8）When, it is impossible to make steel wire rope（20）Relative flexibility pipe
（6）It is mobile, therefore floor projection is not moved up and down.So as to realize moving point ball（8）The position of position and moving point floor projection join
It is dynamic.Steel wire rope（20）Length depend on space line（9）Corresponding length when being vertical profile line.
During use, moving point ball is moved with handss（8）, control the front projection diverse location of moving point, the floor projection of moving point with
Move in place, 7 kinds of positions of space line are put into so as to be not difficult.
Perspective plane, guide rod（27）, guide rod cap（7）, flexible pipe（6）, steel wire rope（20）, steel wire rope support（21）With fixed point frame
（11）Using white, space line（9）With linear projection using blue, ball is pinpointed（10）, moving point ball（8）, moving point projection and fixed
Spot projection adopts black, pan carriage using redness, projection join line and font（4）Using transparent material.
Figure 14 is the embodiment of horizontal line projection.
Figure 15 is the embodiment of frontal line projection.
Figure 16 is the embodiment of profile line projection.Before being put into profile line, point level projection hat is pulled out（16）.
Figure 17 is the embodiment of vertical line projection.Before being put into plumb line, point level projection hat is pulled out（16）.
Figure 18 is the embodiment of vertical frontal line projection.Before being put into vertical frontal line, point level projection hat is pulled out（16）；Disassemble and lead
Bar（27）：Extract guide rod cap, stem guiding trough（33）Front end is opening, then from stem guiding trough（33）In pull out forward moving point ball（8）, make
Moving point ball（8）Depart from guide rod（27）, then rotating guide（27）Make moving point front projection fixture block（39）T-shape block alignment guide rod
（27）Yi word pattern hole, guide rod can be extracted（27）.The front projection of moving point and floor projection are swung to tram again.
Figure 19 is the embodiment of vertical profile line projection.
Claims (1)
1. a kind of flexible drawing straight line two*.plane projection demonstration board of carrying space model, including projection plate, space line model mechanism,
Projection join line mechanism, mechanism of linear projection and link gear；It is characterized in that：Projection plate is one piece of thin plate, and its front is provided with X-axis,
It is frontal plane of projection above X-axis, is horizontal plane below X-axis；If the right endpoint of space line section is fixed point, left end point is
Point；On projection plate, the frontal plane of projection and floor projection of fixed point are respectively equipped with fixed point groove, and fixed point groove is ladder circular hole；In fixed point
Frontal plane of projection and floor projection between be provided with fixed point projection join line；Space line model mechanism includes pinpointing frame, fixed point frame axle
Hold, pinpoint pole, fixed point ball, fixed point axle, space line, moving point ball, guide rod, pin, guide rod cap；Fixed point frame is fixed on by screw
On projection plate, fixed point frame is made up of Z-shaped plate and cylinder, and cylinder is provided with shoulder hole, shoulder hole installs fixed point frame bearing, pinpoints frame
Fixed point pole is installed in bearing, the other end for pinpointing pole is cut into flat；Fixed point ball cuts with fixed point ball groove, pinpoints ball groove and determines
The flat contact surface of point pole is that gap coordinates, and the flat and fixed point round bur for pinpointing pole has through hole, and fixed point is provided with through hole
Axle, fixed point axle connect fixed point pole and fixed point ball, and fixed point ball can be rotated around fixed point pole；Fixed point ball is fixedly connected space
One end of straight line, the space line other end are fixedly connected moving point ball, and moving point ball is provided with to include in moving point ball groove, moving point ball groove and leads
Bar, guide rod are cylindrical tube；Moving point ball and guide rod are connected by pin, and guide rod is provided with stem guiding trough, and pin can be sliding in front and back in stem guiding trough
It is dynamic, make moving point ball movable along guide rod；The cylindrical hole of guide rod rear end is shut by thin-walled, and in-line hole is cut at thin-walled, uses
In-line hole is connected to the front projection of moving point, and guide rod is always perpendicular to perspective plane；Projection join line mechanism includes pan carriage, hangs
Wheel, change gear axle, pulley, pulley spindle, flexible strand, rope support and rope support screw；Pan carriage is c-type strip structure, end hook in pan carriage
Frontal plane of projection upper end is hung over, pan carriage lower end is hooked in horizontal plane lower end, and pan carriage upper end is provided with change gear axle, on change gear axle
Change gear is provided with, change gear rides over projection plate upper end；Behind projection plate, pan carriage top and bottom are respectively equipped with pulley spindle, sliding
Wheel shaft is provided with pulley, and pulley is provided with two slideways, and each slideway is respectively wound with a flexible strand, and flexible strand has two, soft
One end of property rope is fixed on the rope support of upper end side of projection plate；Rope support has 4, is respectively provided with the side at four angles in perspective plane
On face, it is fixed on projection plate by rope support screw；Flexible strand bypasses pulley above, bypasses following pulley still further below, flexible
The other end of rope is fixed on the rope support of lower end opposite side of projection plate, and the fixation of another flexible strand and trend are soft with previous bar
Property rope it is symmetrical, two flexible strands are contrary with the winding direction of same pulley；Bar shaped locating slot is provided with pan carriage, locating slot is long
Square shape；Chute is provided with locating slot, chute is strip, narrower than locating slot；Pan carriage can only be moved left and right on projection plate；Directly
Mechanism of line projection includes fixed point, moving point and projection join line；Fixed point includes pinpointing front projection and point level projection, each projection
It is made up of fixed point bearing, rotating shaft, fixed point wind spring and linear projection, fixed point bearing is installed in fixed point groove, fixed point bearing inner race is solid
Dingan County is equipped with rotating shaft, and rotating shaft is provided with fixed point wind spring, and the inner for pinpointing wind spring is connected with rotating shaft, pinpoints outer end and the straight line of wind spring
Projection connection, linear projection is flexible thin strip, is divided into straight line front projection and straight horizontal projection, linear projection's one ends wound
On fixed point wind spring, the other end is reached on projection plate, is connected with moving point；At point level projection, fixed point bearing inner race dress
It is furnished with point level projection hat, point level projection hat is provided with fixed point opening, and linear projection reaches projection by pinpointing opening
On plate, it is connected with moving point floor projection；Moving point includes moving point front projection and moving point floor projection, and each projects by slide block, moves
Spot projection fixture block, pin, moving point shell, moving point projection join line and moving point cap composition；Slide block is the assembly of cuboid and cylinder, sliding
There is cylindrical hole in the cylinder of block, in hole, be provided with two moving point projection fixture blocks, moving point projection fixture block is half ladder circle cylindricality, and two are moved
Spot projection fixture block connects into stepped cylindrical by pin, and moving point projection fixture block can be rotated in the cylindrical hole of slide block；Moving point projection folder
Block transfer point front projection fixture block and moving point floor projection fixture block, moving point front projection fixture block is than moving point floor projection fixture block front
The many T-shape blocks in end, T-shape block are inserted in the yi word pattern hole of guide rod and are connected with guide rod；The cuboid of slide block is put into translation
In the locating slot of frame, slide block can be slided up and down in locating slot, and the cylinder of slide block is put in the chute of pan carriage；Two moving points are thrown
Linear projection is clamped in contact surface between shadow fixture block, is connected with pin；Moving point front projection is provided with moving point wind spring, moving point
The inner of wind spring is connected with the cylinder of slide block, and the outer end of moving point wind spring is connected with moving point projection join line, outside moving point projection join line
Side is provided with moving point front projection shell, and moving point front projection shell lower end is provided with circular hole, and moving point projection join line is connected to dynamic by circular hole
Point floor projection shell, and be fixed on moving point floor projection shell；In the presence of moving point wind spring, by moving point projection join line always
Give moving point floor projection shell one pulling force；Moving point cap is divided into moving point front projection cap and moving point floor projection cap, and moving point cap passes through
Tight fit connection is on moving point shell；Link gear includes pin, guide rod, pipe section, flexible pipe, pipe ring frame, flexible pipe support, steel wire
Rope, wire rope pulley, steel wire rope support, wire rope pulley axle；It is provided with pipe to cut in the pipe of guide rod, it is lamellar that pipe cuts, and is one with guide rod
Body；One end of flexible pipe is fixed on pipe and cuts, and pipe ring frame is fixed on moving point front projection shell, and flexible pipe support is fixed on pan carriage
The outside of guide rod is guided at middle part, flexible pipe through stem guiding trough, through pipe ring frame, is fixed on flexible pipe support top；The length of flexible pipe
Corresponding length when degree is plumb line depending on space line；Steel wire rope support is fixed on below pan carriage by screw, steel wire rope support
Wire rope pulley axle is installed, on wire rope pulley axle, wire rope pulley is cased with；It is provided with steel wire rope in flexible pipe, steel wire rope can be
Move in flexible pipe；One end of steel wire rope is fixed on the pin of moving point ball, through flexible pipe, is passed through dynamic below flexible pipe support
Point floor projection shell, further around wire rope pulley is crossed, it is following that u-turn is fixed on moving point floor projection shell；The length of steel wire rope is depended on
Corresponding length when space line is vertical profile line；Perspective plane, guide rod, guide rod cap, flexible pipe, steel wire rope, steel wire rope support and fixed point
Frame adopts white, space line and linear projection using blue, pinpoints ball, moving point ball, moving point and projects and pinpoint projection using red
Color, projection join line and font adopt black, pan carriage to adopt transparent material.
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| CN201611134918.0A CN106530932B (en) | 2016-12-11 | 2016-12-11 | The flexible drawing straight line two*.plane projection demonstration board of carrying space model |
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| CN201611134918.0A CN106530932B (en) | 2016-12-11 | 2016-12-11 | The flexible drawing straight line two*.plane projection demonstration board of carrying space model |
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| SU1580425A1 (en) * | 1988-06-24 | 1990-07-23 | Таганрогский радиотехнический институт им.В.Д.Калмыкова | Instrument for determining natural dimension of plane figure on monge diagram |
| CN202748987U (en) * | 2012-09-24 | 2013-02-20 | 黑龙江中医药大学 | Spatial geometry demonstration device with projection function |
| CN203706508U (en) * | 2014-02-10 | 2014-07-09 | 司兴雷 | Projection relation demonstration device for senior high school mathematics |
| CN203849908U (en) * | 2014-02-28 | 2014-09-24 | 苏辉 | Mathematics teaching model |
| CN204029213U (en) * | 2014-06-16 | 2014-12-17 | 许磊 | A kind of descriptive geometry teaching apparatus |
| CN204423745U (en) * | 2015-02-10 | 2015-06-24 | 西安科技大学 | A kind of three projecting plane system diverse location straight line and orthogonal projection demonstration teaching aids thereof |
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2016
- 2016-12-11 CN CN201611134918.0A patent/CN106530932B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1580425A1 (en) * | 1988-06-24 | 1990-07-23 | Таганрогский радиотехнический институт им.В.Д.Калмыкова | Instrument for determining natural dimension of plane figure on monge diagram |
| CN202748987U (en) * | 2012-09-24 | 2013-02-20 | 黑龙江中医药大学 | Spatial geometry demonstration device with projection function |
| CN203706508U (en) * | 2014-02-10 | 2014-07-09 | 司兴雷 | Projection relation demonstration device for senior high school mathematics |
| CN203849908U (en) * | 2014-02-28 | 2014-09-24 | 苏辉 | Mathematics teaching model |
| CN204029213U (en) * | 2014-06-16 | 2014-12-17 | 许磊 | A kind of descriptive geometry teaching apparatus |
| CN204423745U (en) * | 2015-02-10 | 2015-06-24 | 西安科技大学 | A kind of three projecting plane system diverse location straight line and orthogonal projection demonstration teaching aids thereof |
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| CN106530932B (en) | 2018-11-06 |
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Effective date of registration: 20190322 Address after: 510000 Hualiyuan Huali Road, Guangshan Highway, Zengcheng, Guangzhou, Guangdong Province Patentee after: Guangzhou Huali College of Science and Technology Address before: 110870 No. 111 Shenyang West Road, Shenyang economic and Technological Development Zone, Shenyang, Liaoning Patentee before: Shenyang University of Technology |