CN111768681A - Geometry projection simulation device - Google Patents
Geometry projection simulation device Download PDFInfo
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- CN111768681A CN111768681A CN202010736183.9A CN202010736183A CN111768681A CN 111768681 A CN111768681 A CN 111768681A CN 202010736183 A CN202010736183 A CN 202010736183A CN 111768681 A CN111768681 A CN 111768681A
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- 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
- G09B23/02—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics
- G09B23/04—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for mathematics for geometry, trigonometry, projection or perspective
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Abstract
The invention relates to the field of mathematics, in particular to a geometric projection simulation device which comprises a square plate, a top plate, a right plate and a rear plate. The rear side fixedly connected with back plate of square board, the right side fixedly connected with right side board of square board, right side board and back plate all are perpendicular with the square board, roof fixed connection at the upside of right side board and back plate, the roof is parallel with the square board, roof, right side board and back plate are transparent material. Geometry projection analogue means still includes handspike, boss, center pillar, oblique connecting rod and places the dish, and the left end downside fixedly connected with boss of square slab, lateral sliding connection has the handspike on the boss, and the mode that compresses tightly through the screw between handspike and the boss is fixed, and the vertical sliding connection of center pillar is in the center of square slab, and the dish is placed to the upper end fixedly connected with of center pillar, and the articulated lower part at the center pillar of connecting of one end of oblique connecting rod, the articulated left end at the handspike of connecting of the other end of oblique connecting rod.
Description
Technical Field
The invention relates to the field of mathematics, in particular to a geometric projection simulation device.
Background
The utility model discloses an automatic projection device of 4G projection mobile phone, which is disclosed in the application number of CN201620784018.X, the utility model discloses an automatic projection device of 4G projection mobile phone, which relates to the technical field of electronic equipment; a slide rail assembling clamping seat is arranged on the inner side of the lower end of the mobile phone shell assembly, a slide guide rail is clamped in the slide rail assembling clamping seat, a slide block support is arranged on the surface of the slide guide rail, and a magnet is embedded in the slide block support; a spring is arranged between the sliding guide rail and the sliding block bracket; a sliding button is clamped and connected to the outer side of the sliding block bracket; the Hall switch is arranged on the inner side of the sliding guide rail. The novel projection device is simple in structure and novel in design, the projection device is conveniently and rapidly started through the cooperation of the Hall switch and the sliding switch, and frequent operation of a user in the product using process is reduced; the bare optical machine lens can increase the damage risk and can easily enter fine dust to influence the definition of a projection picture. However, the patent does not clearly show the projection of the geometric object, which is convenient for observing the projection of the geometric object.
Disclosure of Invention
The invention provides a geometric projection simulation device, which has the advantages that the device can clearly represent the projection of a geometric object and is convenient for observing the projection of the geometric object.
The invention relates to the field of mathematics, in particular to a geometric projection simulation device which comprises a square plate, a top plate, a right plate and a rear plate.
The rear side fixedly connected with back plate of square board, the right side fixedly connected with right side board of square board, right side board and back plate all are perpendicular with the square board, roof fixed connection at the upside of right side board and back plate, the roof is parallel with the square board, roof, right side board and back plate are transparent material.
Geometry projection analogue means still includes handspike, boss, center pillar, oblique connecting rod and places the dish, and the left end downside fixedly connected with boss of square slab, lateral sliding connection has the handspike on the boss, and the mode that compresses tightly through the screw between handspike and the boss is fixed, and the vertical sliding connection of center pillar is in the center of square slab, and the dish is placed to the upper end fixedly connected with of center pillar, and the articulated lower part at the center pillar of connecting of one end of oblique connecting rod, the articulated left end at the handspike of connecting of the other end of oblique connecting rod.
Geometry projection analogue means still includes spliced pole and right angle pole, places and is connected with the right angle pole through two spliced poles on the dish, and the right angle pole is laminated mutually with the medial surface of right board and back plate, and the up end of right angle pole and the up end of placing the dish are in same plane.
Geometry projection analogue means still includes the disc, penetrates lamp I, connection piece and penetrates lamp II directly, and the central point of disc puts to rotate to be connected on the center pillar, and the disc is placed on the square plate, and the upside of disc is provided with penetrates lamp I directly, and the marginal fixedly connected with connection piece of disc penetrates lamp II vertically to be set up, and the outer end at the connection piece is penetrated lamp II fixed connection directly.
The geometric projection simulation device also comprises clamping grooves, the front part and the left part of the square plate are provided with the clamping grooves, and the connecting sheet can be inserted into one of the clamping grooves; when the connecting sheet is inserted into the clamping groove positioned on the front side, the direct reflector lamp II is positioned on the front side of the placing disc; when the connecting sheet is inserted into the clamping groove on the left side, the straight spot lamp II is positioned on the right left side of the placing plate.
Geometry projection analogue means still includes screw thread post and right angle depression bar, the upside fixedly connected with screw thread post of roof, and the right angle department of right angle depression bar is inserted on the screw thread post, and there is the nut on the upper portion of screw thread post through threaded connection, and the nut is located the upside of right angle depression bar.
The geometry projection simulation device further comprises a support column and a base, the lower side of the square plate is fixedly connected with the support column, and the support column is fixedly connected to the upper side of the base.
Geometry projection analogue means still includes the dead lever, circular separation blade, the axial arris, right angle cutter I, right angle cutter II, folding rod and lifting strip, the lower extreme fixed connection of dead lever is on the base, the dead lever is located the crossing department of right board and back plate, the axial is provided with the axial arris on the dead lever, right angle cutter I fixed connection is in the upper end of dead lever, the vertical sliding connection of lifting strip is on dead lever and axial arris, the circular separation blade of lower part fixedly connected with of dead lever, compression spring has cup jointed on the dead lever, compression spring is located between circular separation blade and the lifting strip, the lower extreme fixed connection of folding rod is on the lifting strip, the upper end fixedly connected with right angle cutter II of folding rod, right angle cutter II is located right angle cutter I directly over.
The geometry projection simulation device further comprises a pressing rod and a hinged vertical seat, the base is fixedly connected with the hinged vertical seat, the hinged vertical seat is hinged with two pressing rods, and the two pressing rods are respectively pressed on the lower portion of the outer side of the rear plate and the lower portion of the outer side of the right plate.
Geometry projection analogue means still includes push away axle, screw hole board, hand screw, trapezoidal slide rail and door shape pole, is provided with trapezoidal slide rail on the base, and sliding connection has a door shape pole on the trapezoidal slide rail, two push away axles of the anterior fixedly connected with of door shape pole, and two push away the axle and press respectively in the outside of two depression bars, and the rear end fixedly connected with screw hole board of trapezoidal slide rail has hand screw through threaded connection on the screw hole board, and hand screw pushes up the rear side at door shape pole.
The geometric projection simulation device has the beneficial effects that:
the invention relates to a geometric projection simulation device which can clearly represent the projection of a geometric object and is convenient for observing the projection of the geometric object. The mathematical geometric object to be projected is placed on the upper side of the square plate, the geometric object is irradiated from the front side, the lower side and the left side of the geometric object respectively, the projections of the geometric object are projected on the rear plate, the top plate and the right plate respectively, and the three projections are respectively a front view, a bottom view and a left view of the geometric object.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of an overall structure of a geometric projection simulation apparatus according to the present invention;
FIG. 2 is a schematic diagram of an overall structure of a geometric projection simulation apparatus according to the present invention;
FIG. 3 is a first schematic structural diagram of a square plate;
FIG. 4 is a second schematic structural view of a square plate;
FIG. 5 is a schematic structural view of a disk;
FIG. 6 is a first schematic structural view of the top plate;
FIG. 7 is a second schematic structural view of the top plate;
FIG. 8 is a schematic structural view of a fixing rod;
FIG. 9 is a first schematic structural diagram of a base;
fig. 10 is a second structural diagram of the base.
In the figure: a square plate 1; a card slot 101; a push rod 102; a boss 103; a center pillar 104; a connecting column 105; a right angle bar 106; an inclined link 107; a support column 108; a placing tray 109; a disc 2; a direct lighting lamp I201; a connecting piece 202; a direct lighting lamp II 203; a top plate 3; a threaded post 301; a right plate 302; a right angle strut 303; a back plate 304; a fixing rod 4; a circular baffle 401; an axial rib 402; a right-angle cutter I403; a right angle cutter II 404; a folding bar 405; a lifting bar 406; a base 5; a pressure lever 501; a push shaft 502; a hinged vertical seat 503; a threaded orifice plate 504; a hand screw 505; a trapezoidal slide rail 506; a gate-shaped rod 507.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The first embodiment is as follows:
the present invention is described below with reference to fig. 1 to 10, and the present invention relates to the field of mathematics, and more specifically, to a geometric projection simulation apparatus, which includes a square plate 1, a top plate 3, a right plate 302, and a back plate 304.
The rear side fixedly connected with back plate 304 of square plate 1, the right side fixedly connected with right board 302 of square plate 1, right board 302 and back plate 304 all are perpendicular with square plate 1, roof 3 fixed connection is at the upside of right board 302 and back plate 304, roof 3 is parallel with square plate 1, roof 3, right board 302 and back plate 304 are transparent material. When the projection device is used, a mathematical geometric object to be projected is placed on the upper side of the square plate 1, the geometric object is irradiated from the front side, the lower side and the left side of the geometric object, the projections of the geometric object are projected on the rear plate 304, the top plate 3 and the right plate 302 respectively, and the three projections are respectively a front view, a bottom view and a left view of the geometric object.
The second embodiment is as follows:
the present embodiment is described below with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a hand push rod 102, a convex seat 103, a middle column 104, an inclined connecting rod 107 and a placing plate 109, the convex seat 103 is fixedly connected to a lower side of the left end of the square plate 1, the hand push rod 102 is slidably connected to the convex seat 103 in a transverse direction, the hand push rod 102 and the convex seat 103 are fixed by a screw pressing manner, the middle column 104 is vertically slidably connected to a center of the square plate 1, the placing plate 109 is fixedly connected to an upper end of the middle column 104, one end of the inclined connecting rod 107 is hinged to a lower portion of the middle column 104, and the other end of the inclined connecting rod 107 is hinged to a left. Geometric objects need to be placed on placing the dish 109, and during manual horizontal push-and-pull handspike 102, handspike 102 drives center pillar 104 through oblique connecting rod 107 and goes up and down, and then drives and place the dish 109 and go up and down, drives geometric objects and goes up and down when placing the dish 109 and go up and down, adjusts geometric objects to the height that needs, and the downside size of geometric objects need be greater than and places dish 109, and then will place the complete bumping post of dish 109, does not influence the view of looking down that geometric objects formed.
The third concrete implementation mode:
the following describes this embodiment with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a connecting column 105 and a right-angle rod 106, the placing tray 109 is connected to the right-angle rod 106 through two connecting columns 105, the right-angle rod 106 is attached to the inner side surfaces of the right plate 302 and the rear plate 304, and the upper end surface of the right-angle rod 106 and the upper end surface of the placing tray 109 are located on the same plane. When the placing disc 109 is lifted, the two connecting columns 105 and the right-angle rod 106 are driven to lift simultaneously, and the right-angle rod 106 is attached to the inner sides of the right plate 302 and the rear plate 304 respectively, so that the lowest edge position of a geometric object can be determined on the outer sides of the right plate 302 and the rear plate 304 conveniently.
The fourth concrete implementation mode:
the following describes this embodiment with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a disc 2, a direct light I201, a connecting piece 202, and a direct light II203, the center position of the disc 2 is rotatably connected to the center post 104, the disc 2 is placed on the square plate 1, the upper side of the disc 2 is provided with the direct light I201, the edge of the disc 2 is fixedly connected with the connecting piece 202, the direct light II203 is vertically arranged, and the direct light II203 is fixedly connected to the outer end of the connecting piece 202. The direct lighting lamp I201 irradiates the geometric object from bottom to top to form a bottom view, the direct lighting lamp II203 can rotate on the center post 104 through the disc 2, and then the direct lighting lamp II203 is adjusted to the left side and the front side of the geometric object to form a left view and a front view.
The fifth concrete implementation mode:
the present embodiment is described below with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a slot 101, the slot 101 is disposed on each of the front and left portions of the square plate 1, and the connecting piece 202 can be inserted into one of the slots 101; when the connecting sheet 202 is inserted into the card slot 101 positioned at the front side, the direct light II203 is positioned at the front side of the placing disc 109; when the connecting piece 202 is inserted into the card slot 101 on the left side, the direct lighting lamp II203 is located right on the left side of the placing tray 109. The card slot 101 functions to position the direct light II 203.
The sixth specific implementation mode:
the present embodiment is described below with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a threaded column 301 and a rectangular compression bar 303, the upper side of the top plate 3 is fixedly connected with the threaded column 301, a right angle of the rectangular compression bar 303 is inserted into the threaded column 301, an upper portion of the threaded column 301 is connected with a nut through a thread, and the nut is located on the upper side of the rectangular compression bar 303. Paper can be laid on the upper side of the top plate 3, and the paper is projected on the top plate 3 and then projected on the paper, so that the bottom view of the geometric object can be drawn by using a pen. The nut is rotated to press the right angle pressing rod 303 on the paper, so as to fix the paper.
The seventh embodiment:
in the following, referring to fig. 1 to 10, the geometric projection simulation apparatus further includes a supporting column 108 and a base 5, the supporting column 108 is fixedly connected to the lower side of the square plate 1, and the supporting column 108 is fixedly connected to the upper side of the base 5. The support posts 108 serve as supports.
The specific implementation mode is eight:
in the following, referring to fig. 1-10, the geometric projection simulation apparatus further includes a fixing rod 4, a circular block 401, and an axial rib 402, right angle cutter I403, right angle cutter II404, folding rod 405 and lifter 406, the lower extreme fixed connection of dead lever 4 is on base 5, dead lever 4 is located the crossing department of right board 302 and back plate 304, the axial is provided with axial arris 402 on dead lever 4, right angle cutter I403 fixed connection is in the upper end of dead lever 4, the vertical sliding connection of lifter 406 is on dead lever 4 and axial arris 402, the circular separation blade 401 of lower part fixedly connected with of dead lever 4, compression spring has cup jointed on dead lever 4, compression spring is located between circular separation blade 401 and the lifter 406, the lower extreme fixed connection of folding rod 405 is on lifter 406, the upper end fixedly connected with right angle cutter II404 of folding rod 405, right angle cutter II404 is located right-angle cutter I403 directly over. The ascending power of lifter 406 is given to compression spring on the dead lever 4, make right angle cutter II404 be in the top, big paper need be laid to the paper of roof 3 upside, expose the paper from the rear side of roof 3 and the right side of roof 3, then make the right back angle department of the paper that exposes be located between right angle cutter I403 and the right angle cutter II404, press right angle cutter II404 and move down, right angle cutter II404 presses to right angle cutter I403, and then downcuts the right back angle department of paper, then the rear side exposure part of paper can be folded to and laminate with back plate 304 at this moment, the right side exposure part of paper can be folded to and laminate with right plate 302, can draw the projection shape on back plate 304 and the right plate 302 respectively.
The specific implementation method nine:
the present embodiment is described below with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a pressing rod 501 and a hinged vertical seat 503, the hinged vertical seat 503 is fixedly connected to the base 5, two pressing rods 501 are hinged to the hinged vertical seat 503, and the two pressing rods 501 are respectively pressed on the lower portion of the outer side of the back plate 304 and the lower portion of the outer side of the right plate 302. The two pressing rods 501 can rotate the lower sides of the paper pressed on the rear plate 304 and the right plate 302, respectively, to fix the paper folded on the rear plate 304 and the right plate 302.
The detailed implementation mode is ten:
the present embodiment is described below with reference to fig. 1 to 10, the geometric projection simulation apparatus further includes a push shaft 502, a threaded hole plate 504, a hand screw 505, a trapezoidal slide rail 506, and a door-shaped rod 507, the base 5 is provided with the trapezoidal slide rail 506, the trapezoidal slide rail 506 is slidably connected with the door-shaped rod 507, the front portion of the door-shaped rod 507 is fixedly connected with two push shafts 502, the two push shafts 502 are respectively pressed on the outer sides of the two compression rods 501, the rear end of the trapezoidal slide rail 506 is fixedly connected with the threaded hole plate 504, the threaded hole plate 504 is connected with the hand screw 505 through a thread, and the hand screw 505 is pressed against the rear side of the door-shaped rod 507. Rotating the hand screw 505 can push the door-shaped rod 507 and the two pushing shafts 502 to slide forward, and further push the two pressing rods 501 to press against the back plate 304 and the right plate 302, respectively, so as to completely fix the paper folded onto the back plate 304 and the right plate 302.
The working principle of the invention is as follows: when the projection device is used, a mathematical geometric object to be projected is placed on the upper side of the square plate 1, the geometric object is irradiated from the front side, the lower side and the left side of the geometric object, the projections of the geometric object are projected on the rear plate 304, the top plate 3 and the right plate 302 respectively, and the three projections are respectively a front view, a bottom view and a left view of the geometric object. Geometric objects need to be placed on placing the dish 109, and during manual horizontal push-and-pull handspike 102, handspike 102 drives center pillar 104 through oblique connecting rod 107 and goes up and down, and then drives and place the dish 109 and go up and down, drives geometric objects and goes up and down when placing the dish 109 and go up and down, adjusts geometric objects to the height that needs, and the downside size of geometric objects need be greater than and places dish 109, and then will place the complete bumping post of dish 109, does not influence the view of looking down that geometric objects formed. When the placing disc 109 is lifted, the two connecting columns 105 and the right-angle rod 106 are driven to lift simultaneously, and the right-angle rod 106 is attached to the inner sides of the right plate 302 and the rear plate 304 respectively, so that the lowest edge position of a geometric object can be determined on the outer sides of the right plate 302 and the rear plate 304 conveniently. The direct lighting lamp I201 irradiates the geometric object from bottom to top to form a bottom view, the direct lighting lamp II203 can rotate on the center post 104 through the disc 2, and then the direct lighting lamp II203 is adjusted to the left side and the front side of the geometric object to form a left view and a front view. When the connecting sheet 202 is inserted into the card slot 101 positioned at the front side, the direct light II203 is positioned at the front side of the placing disc 109; when the connecting piece 202 is inserted into the card slot 101 on the left side, the direct lighting lamp II203 is located right on the left side of the placing tray 109. The card slot 101 functions to position the direct light II 203. Paper can be laid on the upper side of the top plate 3, and the paper is projected on the top plate 3 and then projected on the paper, so that the bottom view of the geometric object can be drawn by using a pen. The nut is rotated to press the right angle pressing rod 303 on the paper, so as to fix the paper. Big paper need be laid to the paper of roof 3 upside, expose the paper from the rear side of roof 3 and the right side of roof 3, then make the right back angle department of the paper that exposes be located between right angle cutter I403 and the right angle cutter II404, press right angle cutter II404 downstream, right angle cutter II404 presses to right angle cutter I403, and then downcut the right back angle department with the paper at this moment, then the rear side exposure part of paper can be folded to and is laminated with back plate 304, the right side exposure part of paper can be folded to and is laminated with right plate 302, can draw the projection shape on back plate 304 and the right plate 302 respectively. The two pressing rods 501 can rotate the lower sides of the paper pressed on the rear plate 304 and the right plate 302, respectively, to fix the paper folded on the rear plate 304 and the right plate 302. Rotating the hand screw 505 can push the door-shaped rod 507 and the two pushing shafts 502 to slide forward, and further push the two pressing rods 501 to press against the back plate 304 and the right plate 302, respectively, so as to completely fix the paper folded onto the back plate 304 and the right plate 302.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.
Claims (10)
1. A geometry projection simulation device comprising a square plate (1), a top plate (3), a right plate (302) and a back plate (304), characterized in that: the rear side fixedly connected with back plate (304) of square plate (1), the right side fixedly connected with right board (302) of square plate (1), right board (302) and back plate (304) all are perpendicular with square plate (1), roof (3) fixed connection is in the upside of right board (302) and back plate (304), roof (3) are parallel with square plate (1), roof (3), right board (302) and back plate (304) are transparent material.
2. A geometric projection simulation apparatus according to claim 1, wherein: geometry projection analogue means still includes handspike (102), boss (103), center pillar (104), oblique connecting rod (107) and places dish (109), left end downside fixedly connected with boss (103) of square plate (1), horizontal sliding connection has handspike (102) on boss (103), it is fixed through the mode that the screw compressed tightly between handspike (102) and boss (103), the center of center pillar (104) vertical sliding connection in square plate (1), the upper end fixedly connected with of center pillar (104) places dish (109), the articulated lower part of connecting at center pillar (104) of the one end of oblique connecting rod (107), the articulated left end of connecting at handspike (102) of the other end of oblique connecting rod (107).
3. A geometric projection simulation apparatus according to claim 2, wherein: geometry projection analogue means still includes spliced pole (105) and right angle pole (106), places and is connected with right angle pole (106) through two spliced poles (105) on dish (109), and right angle pole (106) are laminated mutually with the medial surface of right board (302) and back plate (304), and the up end of right angle pole (106) is in same plane with the up end of placing dish (109).
4. A geometric projection simulation apparatus according to claim 3, wherein: geometry projection analogue means still includes disc (2), direct light I (201), connection piece (202) and direct light II (203), the central point of disc (2) puts the rotation and connects on center pillar (104), place on square slab (1) disc (2), the upside of disc (2) is provided with direct shot lamp I (201), the marginal fixedly connected with connection piece (202) of disc (2), direct light II (203) vertical setting, direct shot lamp II (203) fixed connection is in the outer end of connection piece (202).
5. A geometric projection simulation apparatus according to claim 4, wherein: the geometric projection simulation device further comprises clamping grooves (101), the clamping grooves (101) are formed in the front part and the left part of the square plate (1), and the connecting sheet (202) can be inserted into one clamping groove (101); when the connecting piece (202) is inserted into the clamping groove (101) positioned at the front side, the direct spot lamp II (203) is positioned at the front side of the placing disc (109); when the connecting piece (202) is inserted into the clamping groove (101) on the left side, the straight spot lamp II (203) is located on the right left side of the placing disc (109).
6. A geometric projection simulation apparatus according to claim 5, wherein: geometry projection analogue means still includes screw thread post (301) and right angle depression bar (303), and the upside fixedly connected with screw thread post (301) of roof (3), the right angle department of right angle depression bar (303) is inserted on screw thread post (301), and there is the nut on the upper portion of screw thread post (301) through threaded connection, and the nut is located the upside of right angle depression bar (303).
7. A geometric projection simulation apparatus according to claim 6, wherein: the geometry projection simulation device further comprises a supporting column (108) and a base (5), the supporting column (108) is fixedly connected to the lower side of the square plate (1), and the supporting column (108) is fixedly connected to the upper side of the base (5).
8. A geometric projection simulation apparatus according to claim 7, wherein: the geometry projection simulation device further comprises a fixing rod (4), a circular blocking piece (401), an axial rib (402), a right-angle cutter I (403), a right-angle cutter II (404), a folding rod (405) and a lifting strip (406), wherein the lower end of the fixing rod (4) is fixedly connected to the base (5), the fixing rod (4) is located at the intersection of the right plate (302) and the rear plate (304), the axial rib (402) is axially arranged on the fixing rod (4), the right-angle cutter I (403) is fixedly connected to the upper end of the fixing rod (4), the lifting strip (406) is vertically and slidably connected to the fixing rod (4) and the axial rib (402), the circular blocking piece (401) is fixedly connected to the lower portion of the fixing rod (4), a compression spring is sleeved on the fixing rod (4), the compression spring is located between the circular blocking piece (401) and the lifting strip (406), the lower end of the folding rod (405) is fixedly connected to the lifting strip, the upper end of the folding rod (405) is fixedly connected with a right-angle cutter II (404), and the right-angle cutter II (404) is positioned right above the right-angle cutter I (403).
9. A geometric projection simulation apparatus according to claim 8, wherein: the geometry projection simulation device further comprises a pressing rod (501) and a hinged vertical seat (503), the hinged vertical seat (503) is fixedly connected to the base (5), the hinged vertical seat (503) is hinged to two pressing rods (501), and the two pressing rods (501) are respectively pressed on the lower portion of the outer side of the rear plate (304) and the lower portion of the outer side of the right plate (302).
10. A geometric projection simulation apparatus according to claim 9, wherein: geometry projection analogue means still includes push away axle (502), screw hole board (504), hand screw (505), trapezoidal slide rail (506) and door shape pole (507), be provided with trapezoidal slide rail (506) on base (5), sliding connection has door shape pole (507) on trapezoidal slide rail (506), two push away axle (502) of front portion fixedly connected with of door shape pole (507), two push away axle (502) press the outside at two depression bars (501) respectively, the rear end fixedly connected with screw hole board (504) of trapezoidal slide rail (506), there is hand screw (505) through threaded connection on screw hole board (504), hand screw (505) top is in the rear side of door shape pole (507).
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| CN202010736183.9A CN111768681B (en) | 2020-07-28 | 2020-07-28 | Geometry projection simulation device |
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| CN202010736183.9A CN111768681B (en) | 2020-07-28 | 2020-07-28 | Geometry projection simulation device |
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| CN110480744A (en) * | 2019-08-15 | 2019-11-22 | 浙江农林大学暨阳学院 | A kind of Accounting Course account book quick shearing device |
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| CN204791675U (en) * | 2015-07-21 | 2015-11-18 | 浙江大学城市学院 | How much teaching aids that mechanical drawing used |
| CN107437356A (en) * | 2017-08-23 | 2017-12-05 | 王蓝 | A kind of adjustable teaching solid geometry three-view diagram apparatus for demonstrating |
| CN108010423A (en) * | 2017-12-11 | 2018-05-08 | 大连高马艺术设计工程有限公司 | According to the learning aids and control system of rotation angle posture real-time display three-view diagram |
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