CN108407508B - Drawing device for teaching - Google Patents
Drawing device for teaching Download PDFInfo
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- CN108407508B CN108407508B CN201810341693.9A CN201810341693A CN108407508B CN 108407508 B CN108407508 B CN 108407508B CN 201810341693 A CN201810341693 A CN 201810341693A CN 108407508 B CN108407508 B CN 108407508B
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- control line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L11/00—Non-circular-curve-drawing instruments
- B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a drawing device for teaching, comprising: the device comprises a first fixed ruler, a second fixed ruler, a first sliding ruler, a second sliding ruler, a first drawing part, a second drawing part, a first adjusting part, a second adjusting part, a first control line, a second control line, a third control line, a fourth control line, a first traction component, a second traction component, a third traction component, a fourth traction component and a wire winding rotating shaft; the first adjusting part comprises a first adjusting part body and a first locking bolt; the second adjusting part comprises a second adjusting part body and a second locking bolt. Before the drawing device for teaching is used for drawing a hyperbola or a parabola, a user needs to unscrew the first locking bolt and the second locking bolt firstly, adjust the positions of the first adjusting part body and the second adjusting part body to slide, then screw the first locking bolt and the second locking bolt, and rotate the wire-collecting rotating shaft to drive the first drawing part and the second drawing part to draw the hyperbola or the parabola.
Description
Technical Field
The invention relates to the technical field of drawing tools, in particular to a drawing device for teaching.
Background
Conic section is one of the important and difficult contents in high school mathematics teaching, and in particular, because of teaching needs, drawing a hyperbolic or parabolic standard on a blackboard has been a problem which plagues a wide range of teachers. Currently, in order to draw hyperbolas or parabolas, teachers mostly adopt a "point drawing method", which mainly comprises direct "hand drawing points" or "computer-aided" drawing, wherein the "hand drawing points" are long in time consumption and low in precision, and the "computer-aided" drawing requires the teacher to take multimedia animation or picture display, lacks the flexibility of classroom practice, and is unfavorable for students to understand the definition essence.
Disclosure of Invention
The invention aims to overcome the technical defects, provides a drawing device for teaching, and solves the technical problem that a teacher cannot draw a hyperbola or a parabola on a common blackboard quickly in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention provides a drawing device for teaching, which comprises: the device comprises a first fixed ruler, a second fixed ruler, a first sliding ruler, a second sliding ruler, a first drawing part, a second drawing part, a first adjusting part, a second adjusting part, a first control line, a second control line, a third control line, a fourth control line, a first traction component, a second traction component, a third traction component, a fourth traction component and a wire winding rotating shaft, wherein the first fixed ruler is perpendicular to the second fixed ruler, and the middle part of the first fixed ruler is fixedly connected with the middle part of the second fixed ruler; the first sliding rule and the second sliding rule are symmetrically arranged on two sides of the first fixed rule and are mutually parallel, one end of each of the first sliding rule and the second sliding rule is in sliding connection with the second fixed rule, and the sliding directions of the first sliding rule and the second sliding rule are the length directions of the second fixed rule; the first drawing part is connected with the first sliding ruler in a sliding way, and the sliding direction of the first drawing part is the length direction of the first sliding ruler; the second drawing part is connected with the second sliding ruler in a sliding way, and the sliding direction of the second drawing part is the length direction of the second sliding ruler; the traction end of the first traction assembly is connected with the first sliding ruler and generates a restoring force for resetting the first sliding ruler; the traction end of the second traction assembly is connected with the second sliding ruler and generates a restoring force for resetting the second sliding ruler; the traction end of the third traction component is connected with the first drawing part and generates a restoring force for resetting the first drawing part; the traction end of the fourth traction component is connected with the second drawing part and generates a restoring force for resetting the second drawing part; the wire-collecting rotating shaft is rotationally connected to the junction of the first fixed ruler and the second fixed ruler; the first adjusting part and the second adjusting part are connected with the first fixed ruler and are symmetrically arranged on two sides of the second fixed ruler or on the same side of the second fixed ruler; when the first adjusting part and the second adjusting part are symmetrically arranged on two sides of the second fixed ruler, the length of the first control wire is equal to that of the third control wire, the length of the second control wire is equal to that of the fourth control wire, the length of the first control wire is longer than that of the second control wire, one ends of the first control wire, the second control wire, the third control wire and the fourth control wire are fixedly connected with the wire winding rotating shaft, the other end of the first control wire bypasses the first adjusting part and then is connected with the first drawing part, the other end of the second control wire bypasses the second adjusting part and then is connected with the first drawing part, the other end of the third control wire bypasses the first adjusting part and then is connected with the second drawing part, and the other end of the fourth control wire bypasses the second adjusting part and then is connected with the second drawing part; when the first adjusting part and the second adjusting part are arranged on the same side of the second fixed ruler, the lengths of the first control line, the second control line, the third control line and the fourth control line are equal, one ends of the first control line, the second control line, the third control line and the fourth control line are fixedly connected with the wire collecting rotating shaft, the other end of the first control line sequentially bypasses the first adjusting part and the first drawing part and then is fixedly connected with one end of the first sliding ruler, which is close to the second fixed ruler, the other end of the second control line sequentially bypasses the first adjusting part and the first drawing part and then is fixedly connected with the second adjusting part, the other end of the third control line sequentially bypasses the first adjusting part and the second drawing part and then is fixedly connected with one end of the second sliding ruler, and the other end of the fourth control line sequentially bypasses the first adjusting part and the second drawing part and then is fixedly connected with the second adjusting part;
the first control line, the second control line, the third control line and the fourth control line are all inelastic lines.
Compared with the prior art, the invention has the beneficial effects that: when the first adjusting part and the second adjusting part are symmetrically arranged on two sides of the second fixed ruler, a user needs to respectively press the first adjusting part and the second adjusting part to two focuses of a preset hyperbola correspondingly, and then the wire-collecting rotating shaft is rotated to drive the first drawing part and the second drawing part to draw the hyperbola rapidly; when the first adjusting part and the second adjusting part are arranged on the same side of the second fixed ruler, the user needs to respectively press the second adjusting part and the second fixed ruler on a focus and a quasi line of a preset parabola correspondingly, the first adjusting part is fixed, and then the wire-collecting rotating shaft is rotated to drive the first drawing part and the second drawing part to draw the parabola quickly.
Drawings
Fig. 1 is a schematic view of a first perspective structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a second perspective view of embodiment 1 of the present invention.
Fig. 3 is a schematic front view of fig. 1.
Fig. 4 is a side view of the schematic of fig. 1.
FIG. 5 is a schematic cross-sectional view taken along the A-A plane in FIG. 4.
Fig. 6 is an enlarged schematic view of a portion of fig. 5 at D.
Fig. 7 is an enlarged partial schematic view of a first control line in the present invention.
Fig. 8 is a schematic view of a first perspective view of embodiment 2 of the present invention.
Fig. 9 is a schematic view of a second perspective view of embodiment 2 of the present invention.
Fig. 10 is a schematic front view of fig. 8.
Fig. 11 is a side view of fig. 8.
FIG. 12 is a schematic view in section taken along the plane B-B in FIG. 11.
Fig. 13 is a schematic view of a longitudinal section of a winding shaft in embodiment 2 of the present invention.
Fig. 14 is a schematic cross-sectional view of a winding shaft in embodiment 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1:
referring to fig. 1 to 7, the present embodiment provides a drawing device for teaching, including: the device comprises a first fixed ruler a, a second fixed ruler b, a first sliding ruler c, a second sliding ruler d, a first drawing part e, a second drawing part f, a first adjusting part g, a second adjusting part h, a first control line i, a second control line j, a third control line k, a fourth control line m, a first traction component n, a second traction component p, a third traction component q, a fourth traction component r and a wire collecting rotating shaft s, wherein the first fixed ruler a is perpendicular to the second fixed ruler b, and the middle part of the first fixed ruler a is fixedly connected with the middle part of the second fixed ruler b; a first adjusting groove aa and a second adjusting groove ab are formed in the first fixed ruler a along the length direction of the first fixed ruler a, and the first adjusting groove aa and the second adjusting groove ab are respectively arranged on two sides of the second fixed ruler b; the first adjusting part g comprises a first adjusting part body g1 and a first locking bolt g2, and the first adjusting part body g1 is in sliding connection with the first adjusting groove aa; one end of the first locking bolt g2 is fixedly connected with the first adjusting part body g1, and the other end of the first locking bolt g2 passes through the first adjusting groove aa and is in matched connection with a nut of the first adjusting groove aa; the second adjusting part h comprises a second adjusting part body h1 and a second locking bolt h2, and the second adjusting part body h1 is in sliding connection with the second adjusting groove ab; one end of the second locking bolt h2 is fixedly connected with the second adjusting part body h1, and the other end of the second locking bolt h2 passes through the second adjusting groove ab and is in matched connection with a nut of the second adjusting groove ab; a first guide groove ba and a second guide groove bb are arranged on the second fixed ruler b along the length direction of the second fixed ruler b, and the first guide groove ba and the second guide groove bb are respectively arranged on two sides of the first fixed ruler a; one end of the first sliding ruler c is in sliding connection with the first guide groove ba, and the first sliding ruler c is arranged in parallel with the first fixed ruler a; a third guide groove ca is formed in the first sliding ruler c along the length direction of the first sliding ruler c; the first drawing part e is in sliding connection with the third guide groove ca; one end of the second sliding rule d is in sliding connection with the second guide groove bb, the second sliding rule d is arranged in parallel with the first fixed rule a, and the second sliding rule d and the first sliding rule c are arranged on the same side of the second fixed rule b; a fourth guide groove da is formed in the second sliding ruler d along the length direction of the second sliding ruler d; the second drawing part f is in sliding connection with the fourth guide groove da; the wire-collecting rotating shaft s is rotationally connected to the junction of the first fixed ruler a and the second fixed ruler b; one ends of the first control line i, the second control line j, the third control line k and the fourth control line m are connected with the wire-collecting rotating shaft s; the other end of the first control line i bypasses the first adjusting part body g1 and is connected with the first drawing part e; the other end of the second control line j bypasses the second adjusting part body h1 and is connected with the first drawing part e; the other end of the third control line k bypasses the first adjusting part body g1 and is connected with the second drawing part f; the other end of the fourth control line m bypasses the second adjusting part body h1 and is connected with the second drawing part f; the first traction component n is arranged in one end of the first guide groove ba, which is far away from the first fixed ruler a, and the traction end of the first traction component n is connected with the first sliding ruler c; the second traction component p is arranged in one end of the second guide groove bb, which is far away from the first fixed ruler a, and the traction end of the second traction component p is connected with the second sliding ruler d; the third traction component q is arranged in one end of the third guide groove ca, which is far away from the second fixed ruler b, and the traction end of the third traction component q is connected with the first drawing part e; the fourth traction component r is arranged in one end of the fourth guide groove da, which is far away from the second fixed ruler b, and the traction end of the fourth traction component r is connected with the second drawing part f; the first traction component n, the second traction component p, the third traction component q and the fourth traction component r are used for enabling the first control line i, the second control line j, the third control line k and the fourth control line m to be always in a tight state; specifically, the first traction component n comprises a first torsion spring n1, a first reel n2 and a first traction rope n3, one end of the first torsion spring n1 is fixedly connected with the groove wall of the first guide groove ba, and the other end of the first torsion spring n1 is coaxially and fixedly connected with the first reel n 2; one end of the first traction rope n3 is wound on the first reel n2, and the other end of the first traction rope n3 is fixedly connected with the first sliding ruler c; the second traction assembly p comprises a second torsion spring, a second reel and a second traction rope, one end of the second torsion spring is fixedly connected with the groove wall of the second guide groove bb, and the other end of the second torsion spring is coaxially and fixedly connected with the second reel; one end of the second traction rope is wound on the second reel, and the other end of the second traction rope is fixedly connected with the second sliding ruler d; the third traction component q comprises a third torsion spring, a third winding wheel and a third traction rope, one end of the third torsion spring is fixedly connected with the groove wall of the third guide groove, and the other end of the third torsion spring is coaxially and fixedly connected with the third winding wheel; one end of the third traction rope is wound on the third reel, and the other end of the third traction rope is fixedly connected with the first drawing part e; the fourth traction component r comprises a fourth torsion spring, a fourth reel and a fourth traction rope, one end of the fourth torsion spring is fixedly connected with the groove wall of the fourth guide groove, and the other end of the fourth torsion spring is coaxially and fixedly connected with the fourth reel; one end of the fourth traction rope is wound on the fourth reel, and the other end of the fourth traction rope is fixedly connected with the second drawing part f; wherein the lengths of the first control line i and the third control line k are equal; the length of the second control line j is equal to that of the fourth control line m, and the first control line i is longer than the second control line j in this embodiment; the first control line i, the second control line j, the third control line k and the fourth control line m are all inelastic lines and are provided with scales. Before the teaching drawing device is used for drawing a hyperbola, a user needs to unscrew the first locking bolt g2 and the second locking bolt h2 firstly, slide the first adjusting part body g1 and the second adjusting part body h1 to enable the distances from the first adjusting part body g1 to the second fixed ruler b to be equal, the distance between the first adjusting part body g1 and the second adjusting part body h1 is equal to the distance between two focuses of the hyperbola to be drawn, then screw the first locking bolt g2 and the second locking bolt h2, then press the first adjusting part body g1 and the second adjusting part body h1 on two preset focuses of the hyperbola to be drawn correspondingly, finally rotate the wire collecting rotating shaft s, enable the first control wire i, the second control wire j, the third control wire k and the fourth control wire m to be wound on the wire collecting rotating shaft s at the same time, and drive the first drawing part e and the second drawing part f to draw the hyperbola fast.
Preferably, the first adjusting part body g1 includes a first adjusting seat, a first rotating shaft and a first pulley, and the first adjusting seat is slidably connected to the first adjusting groove; the first rotating shaft is vertically connected to the upper surface of the first adjusting seat; the number of the first pulleys is two, and the two first pulleys are both in rotary connection with the first rotating shaft; the outer peripheral surfaces of the two first pulleys are respectively provided with an annular groove used for being respectively clamped with the first control line i and the third control line j, so that the movement of the first control line i and the third control line j is guided, and meanwhile, the movement resistance of the first control line i and the third control line j is reduced; the second adjusting part body h1 comprises a second adjusting seat, a second rotating shaft and a second pulley, and the second adjusting seat is connected with the second adjusting groove in a sliding manner; the second rotating shaft is vertically connected to the upper surface of the second adjusting seat; the number of the second pulleys is two, and the two second pulleys are both in rotary connection with the second rotating shaft; the outer peripheral surfaces of the two second pulleys are respectively provided with an annular groove used for being respectively clamped with the second control line j and the fourth control line m, so that the second pulley plays a role in guiding the movement of the second control line j and the fourth control line m, and meanwhile, the movement resistance of the second control line j and the fourth control line m is reduced.
Preferably, the first drawing part e includes a first drawing base e1, a first pen clip e2, and a first fixing column e3, and the first drawing base e1 is slidably connected to the third guide groove ca; the first pen clamp e2 is arranged on the lower surface of the first drawing base e1 and is used for clamping a painting pen; the first fixing column e3 is arranged on the upper surface of the first drawing base e 1; one end of the first control line i and one end of the second control line j are connected with the first fixing column e 3; the second drawing part f comprises a second drawing base f1, a second pen clip f2 and a second fixed column f3, and the second drawing base f1 is slidably connected to the fourth guide groove da; the second pen clamp f2 is arranged on the lower surface of the second drawing base f1 and is used for clamping a painting brush; the second fixing column f3 is arranged on the upper surface of the second drawing base f 1; and one ends of the third control line k and the fourth control line m are connected with the second fixed column f 3.
Preferably, the lower surfaces of the first fixed ruler a and the second fixed ruler b are provided with magnetic coatings or suckers, so that the drawing device for teaching can be conveniently fixed on a blackboard. Preferably, scale marks are arranged on the upper surface of the first fixed ruler a; the first control line i, the second control line j, the third control line k and the fourth control line m are provided with scales with black and white intervals.
Example 2:
referring to fig. 8 to 14, basically the same as embodiment 1 is different in that: the first adjusting part body g1 and the second adjusting part body h1 are both slidably connected to the second adjusting groove ab and fixed by the first locking bolt g2 and the second locking bolt h2, and in this embodiment, the first adjusting part g is located between the second fixed ruler b and the second adjusting part h; one ends of the first control line i, the second control line j, the third control line k and the fourth control line m are fixedly connected with the wire-collecting rotating shaft s; the other end of the first control line i sequentially bypasses the first adjusting part body g1 and the first drawing part e and is fixedly connected with one end of the first sliding rule c, which is close to the second fixed rule b, through a ferrule or a snap fastener; the other end of the second control line j sequentially bypasses the first adjusting part body g1 and the first drawing part e and is fixedly connected with the second adjusting part body h1 through a ferrule or a snap fastener; the other end of the third control line k sequentially bypasses the first adjusting part body g1 and the second drawing part f and is fixedly connected with one end of the second sliding ruler d, which is close to the second fixed ruler b, through a ferrule or a snap fastener; the other end of the fourth control line m sequentially bypasses the first adjusting part body g1 and the second drawing part f and is fixedly connected with the second adjusting part body h1 through a ferrule or a snap fastener; in this embodiment, the number of the first pulleys is four, and the four first pulleys are all rotatably connected with the first rotating shaft; the outer peripheral surfaces of the four first pulleys are respectively provided with an annular groove used for being respectively clamped with a first control line i, a second control line j, a third control line k and a fourth control line m.
The wire-collecting rotating shaft s comprises a wire-collecting rotating shaft body s1, a bolt s2 and a wire-collecting wheel s3, the wire-collecting rotating shaft body s1 is rotatably connected to the junction of the first fixed ruler a and the second fixed ruler b, and a first butt joint groove s1a which is axially arranged along the outer peripheral surface of the wire-collecting rotating shaft body s1 is formed in the outer peripheral surface of the wire-collecting rotating shaft body s 1; one end of the first butting groove s1a penetrates through the outer end face of the wire-collecting rotating shaft body s 1; the four wire-winding wheels s3 are sequentially arranged along the axial direction of the wire-winding rotating shaft body s1 and are in rotating connection with the wire-winding rotating shaft body s1, and a plurality of second butt joint grooves s3a which are uniformly arranged along the circumferential direction of each wire-winding wheel s3 are formed in the inner circumferential surface of each wire-winding wheel s 3; one side of the first plug s2 is inserted into the first docking groove s1a, the other side of the plug s2 is sequentially clamped in one second docking groove s3a on each wire winding wheel s3, after the plug s2 is pulled out, a user can rotationally adjust four wire winding wheels s3, so that the lengths of the adjusted first control wire i, second control wire j, third control wire k and fourth control wire m are equal.
Before the drawing device for teaching is used for drawing a parabola, a user needs to unscrew the first locking bolt g2 and the second locking bolt h2 firstly, slide the first adjusting part body g1 and the second adjusting part body h1 to enable the distance between the first adjusting part body g1 and the second fixed ruler b and the distance between the second adjusting part body h1 and the second fixed ruler b to be equal to the distance between a focus and a quasi line of the parabola to be drawn, then screw the first locking bolt g2 and the second locking bolt h2, then press the second adjusting part body h1 and the second fixed ruler b on a preset focus and a quasi line of the parabola to be drawn correspondingly, and finally rotate the line-collecting rotating shaft s to drive the first drawing part e and the second drawing part f to draw the parabola rapidly.
Preferably, the outer peripheral surfaces of the four wire-rewinding wheels s3 are respectively provided with an annular groove for respectively accommodating the first control wire i, the second control wire j, the third control wire k and the fourth control wire m. Preferably, two side end surfaces of each take-up pulley s3 are provided with a step groove s3b; the second butting grooves s3a are formed by downwards sinking the upper surface of the step groove s3b and are uniformly arranged for a circle along the inner peripheral surface of the wire-rewinding wheel s3, and the cross section area of each second butting groove s3a is gradually reduced from top to bottom; the bolt s2 comprises a bolt rod s21 and four clamping blocks s22, and the bolt rod s21 is inserted into and clamped with the first butt joint groove s1a; the four clamping blocks s22 are sequentially arranged along the height direction of the bolt rod s21 and are sequentially clamped in a second butting groove s3a on each wire winding wheel s3, and the cross section area of each clamping block s22 is gradually reduced from top to bottom; the user only needs to lift the latch rod s21 upwards to enable the clamping block s22 and the second butting groove s3a to be staggered, and then each take-up pulley s3 can be rotated independently, and the latch rod s21 does not need to be pulled out completely.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (10)
1. A drawing device for teaching, comprising: the device comprises a first fixed ruler, a second fixed ruler, a first sliding ruler, a second sliding ruler, a first drawing part, a second drawing part, a first adjusting part, a second adjusting part, a first control line, a second control line, a third control line, a fourth control line, a first traction component, a second traction component, a third traction component, a fourth traction component and a wire winding rotating shaft, wherein the first fixed ruler is perpendicular to the second fixed ruler, and the middle part of the first fixed ruler is fixedly connected with the middle part of the second fixed ruler; the first sliding rule and the second sliding rule are symmetrically arranged on two sides of the first fixed rule and are mutually parallel, one end of each of the first sliding rule and the second sliding rule is in sliding connection with the second fixed rule, and the sliding directions of the first sliding rule and the second sliding rule are the length directions of the second fixed rule; the first drawing part is connected with the first sliding ruler in a sliding way, and the sliding direction of the first drawing part is the length direction of the first sliding ruler; the second drawing part is connected with the second sliding ruler in a sliding way, and the sliding direction of the second drawing part is the length direction of the second sliding ruler; the traction end of the first traction assembly is connected with the first sliding ruler and generates a restoring force for resetting the first sliding ruler; the traction end of the second traction assembly is connected with the second sliding ruler and generates a restoring force for resetting the second sliding ruler; the traction end of the third traction component is connected with the first drawing part and generates a restoring force for resetting the first drawing part; the traction end of the fourth traction component is connected with the second drawing part and generates a restoring force for resetting the second drawing part; the wire-collecting rotating shaft is rotationally connected to the junction of the first fixed ruler and the second fixed ruler; the first adjusting part and the second adjusting part are connected with the first fixed ruler and are symmetrically arranged on two sides of the second fixed ruler or on the same side of the second fixed ruler; when the first adjusting part and the second adjusting part are symmetrically arranged on two sides of the second fixed ruler, the length of the first control wire is equal to that of the third control wire, the length of the second control wire is equal to that of the fourth control wire, the length of the first control wire is longer than that of the second control wire, one ends of the first control wire, the second control wire, the third control wire and the fourth control wire are fixedly connected with the wire winding rotating shaft, the other end of the first control wire bypasses the first adjusting part and then is connected with the first drawing part, the other end of the second control wire bypasses the second adjusting part and then is connected with the first drawing part, the other end of the third control wire bypasses the first adjusting part and then is connected with the second drawing part, and the other end of the fourth control wire bypasses the second adjusting part and then is connected with the second drawing part; when the first adjusting part and the second adjusting part are arranged on the same side of the second fixed ruler, the lengths of the first control line, the second control line, the third control line and the fourth control line are equal, one ends of the first control line, the second control line, the third control line and the fourth control line are fixedly connected with the wire collecting rotating shaft, the other end of the first control line sequentially bypasses the first adjusting part and the first drawing part and then is fixedly connected with one end of the first sliding ruler, which is close to the second fixed ruler, the other end of the second control line sequentially bypasses the first adjusting part and the first drawing part and then is fixedly connected with the second adjusting part, the other end of the third control line sequentially bypasses the first adjusting part and the second drawing part and then is fixedly connected with one end of the second sliding ruler, and the other end of the fourth control line sequentially bypasses the first adjusting part and the second drawing part and then is fixedly connected with the second adjusting part;
the first control line, the second control line, the third control line and the fourth control line are all inelastic lines.
2. The drawing device for teaching according to claim 1, wherein a first adjustment groove and a second adjustment groove are provided on the first fixed rule along a length direction thereof, and the first adjustment groove and the second adjustment groove are respectively arranged on both sides of the second fixed rule; the first adjusting part comprises a first adjusting part body and a first locking bolt, and the first adjusting part body is in sliding connection with the first adjusting groove; one end of the first locking bolt is fixedly connected with the first adjusting part body, and the other end of the first locking bolt passes through the first adjusting groove or the second adjusting groove and is matched and connected with a nut of the first adjusting groove or the second adjusting groove; the second adjusting part comprises a second adjusting part body and a second locking bolt, and the second adjusting part body is in sliding connection with the second adjusting groove; one end of the second locking bolt is fixedly connected with the second adjusting part body, and the other end of the second locking bolt penetrates through the second adjusting groove and is in matched connection with the nut of the second adjusting groove; a first guide groove and a second guide groove are formed in the second fixed ruler along the length direction of the second fixed ruler, and the first guide groove and the second guide groove are respectively arranged on two sides of the first fixed ruler; one end of the first sliding ruler is connected with the first guide groove in a sliding manner; a third guide groove is formed in the first sliding ruler along the length direction of the first sliding ruler; the first drawing part is in sliding connection with the third guide groove; one end of the second sliding ruler is connected with the second guide groove in a sliding manner; a fourth guide groove is formed in the second sliding ruler along the length direction of the second sliding ruler; the second drawing part is in sliding connection with the fourth guide groove; the first traction assembly is arranged in one end, far away from the first fixed ruler, of the first guide groove, and the traction end of the first traction assembly is connected with the first sliding ruler; the second traction assembly is arranged in one end, far away from the first fixed ruler, of the second guide groove, and the traction end of the second traction assembly is connected with the second sliding ruler; the third traction assembly is arranged in one end, far away from the second fixed ruler, of the third guide groove, and the traction end of the third traction assembly is connected with the first drawing part; the fourth traction assembly is arranged in one end, far away from the second fixed ruler, of the fourth guide groove, and the traction end of the fourth traction assembly is connected with the second drawing part.
3. The drawing device for teaching according to claim 2, wherein the first adjusting part body comprises a first adjusting seat, a first rotating shaft and a first pulley, and the first adjusting seat is slidably connected to the first adjusting groove; the first rotating shaft is vertically connected to the upper surface of the first adjusting seat; the number of the first pulleys is two, and the two first pulleys are both in rotary connection with the first rotating shaft; the outer peripheral surfaces of the two first pulleys are respectively provided with an annular groove used for being respectively clamped with the first control line and the third control line; the second adjusting part body comprises a second adjusting seat, a second rotating shaft and a second pulley, and the second adjusting seat is connected with the second adjusting groove in a sliding manner; the second rotating shaft is vertically connected to the upper surface of the second adjusting seat; the number of the second pulleys is two, and the two second pulleys are both in rotary connection with the second rotating shaft; and the outer peripheral surfaces of the two second pulleys are respectively provided with an annular groove used for being respectively clamped with the second control line and the fourth control line.
4. The drawing device for teaching according to claim 2, wherein the first traction assembly comprises a first torsion spring, a first reel and a first traction rope, one end of the first torsion spring is fixedly connected with a groove wall of the first guide groove, and the other end of the first torsion spring is coaxially and fixedly connected with the first reel; one end of the first traction rope is wound on the first reel, and the other end of the first traction rope is fixedly connected with the first sliding ruler; the second traction assembly comprises a second torsion spring, a second winding wheel and a second traction rope, one end of the second torsion spring is fixedly connected with the groove wall of the second guide groove, and the other end of the second torsion spring is coaxially and fixedly connected with the second winding wheel; one end of the second traction rope is wound on the second reel, and the other end of the second traction rope is fixedly connected with the second sliding ruler; the third traction assembly comprises a third torsion spring, a third winding wheel and a third traction rope, one end of the third torsion spring is fixedly connected with the groove wall of the third guide groove, and the other end of the third torsion spring is coaxially and fixedly connected with the third winding wheel; one end of the third traction rope is wound on the third reel, and the other end of the third traction rope is fixedly connected with the first drawing part; the fourth traction assembly comprises a fourth torsion spring, a fourth winding wheel and a fourth traction rope, one end of the fourth torsion spring is fixedly connected with the groove wall of the fourth guide groove, and the other end of the fourth torsion spring is coaxially and fixedly connected with the fourth winding wheel; one end of the fourth traction rope is wound on the fourth winding wheel, and the other end of the fourth traction rope is fixedly connected with the second drawing part.
5. The teaching drawing device according to claim 2, wherein the first drawing part comprises a first drawing base, a first pen clip and a first fixing column, and the first drawing base is slidably connected to the third guide groove; the first pen clip is arranged on the lower surface of the first drawing base; the first fixing column is arranged on the upper surface of the first drawing base; one end of the first control line and one end of the second control line are connected with the first fixing column; the second drawing part comprises a second drawing base, a second pen clip and a second fixing column, and the second drawing base is connected with the fourth guide groove in a sliding manner; the second pen clip is arranged on the lower surface of the second drawing base; the second fixing column is arranged on the upper surface of the second drawing base; and one end of the third control line and one end of the fourth control line are connected with the second fixing column.
6. The drawing device for teaching according to claim 1, wherein the winding shaft comprises a winding shaft body, a bolt and a winding wheel, the winding shaft body is rotatably connected to the junction of the first fixed ruler and the second fixed ruler, and a first butt joint groove arranged along the axial direction of the winding shaft body is arranged on the peripheral surface of the winding shaft body; one end of the first butt joint groove penetrates through the outer end face of the wire-collecting rotating shaft body; the four wire-collecting wheels are sequentially arranged along the axial direction of the wire-collecting rotating shaft body and are in rotating connection with the wire-collecting rotating shaft body, and a plurality of second butt joint grooves which are uniformly arranged along the circumferential direction of each wire-collecting wheel are formed in the inner circumferential surface of each wire-collecting wheel; one side of the first bolt is inserted into the first butt joint groove, and the other side of the first bolt is sequentially clamped in one second butt joint groove on each wire winding wheel.
7. The drawing device for teaching according to claim 6, wherein the outer peripheral surfaces of the four take-up wheels are each provided with an annular groove.
8. The drawing device for teaching according to claim 6, wherein both side end surfaces of each take-up pulley are provided with a stepped groove; the second butt joint grooves are formed by downwards sinking the upper surfaces of the stepped grooves, and the cross section area of each second butt joint groove is gradually reduced from top to bottom; the bolt comprises a bolt rod and four clamping blocks, and the bolt rod is inserted into and clamped in the first butt joint groove; the four clamping blocks are sequentially arranged along the height direction of the bolt rod and are sequentially clamped in one second butt joint groove on each wire winding wheel, and the cross section area of each clamping block is gradually reduced from top to bottom.
9. The drawing device for teaching according to claim 1, wherein the lower surfaces of the first and second fixed scales are provided with a magnetic coating or suction cup.
10. The drawing device for teaching according to claim 1, wherein the upper surface of the first fixed rule is provided with scale marks; the first control line, the second control line, the third control line and the fourth control line are provided with scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341693.9A CN108407508B (en) | 2018-04-17 | 2018-04-17 | Drawing device for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810341693.9A CN108407508B (en) | 2018-04-17 | 2018-04-17 | Drawing device for teaching |
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| Publication Number | Publication Date |
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| CN108407508A CN108407508A (en) | 2018-08-17 |
| CN108407508B true CN108407508B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810341693.9A Active CN108407508B (en) | 2018-04-17 | 2018-04-17 | Drawing device for teaching |
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| DE525592C (en) * | 1928-10-04 | 1931-05-28 | Askania Werke A G Vormals Cent | Hyperbolic draftsman |
| US2660790A (en) * | 1951-07-30 | 1953-12-01 | Polakowski Marian | Instrument for drawing conic sections |
| SU539790A1 (en) * | 1975-06-20 | 1976-12-25 | Предприятие П/Я А-1649 | Conic section drawing tool |
| CN2198125Y (en) * | 1994-08-24 | 1995-05-24 | 曹虎林 | Conic curve drawing instrument |
| CN2310682Y (en) * | 1997-11-06 | 1999-03-17 | 杨振起 | Para-curve gauge |
| CN203920146U (en) * | 2014-04-25 | 2014-11-05 | 朱延波 | A kind of Multifunctional conic section ruler |
| CN205997593U (en) * | 2016-07-12 | 2017-03-08 | 叶裕洋 | Chi drawn by parabola |
| CN211195623U (en) * | 2018-04-17 | 2020-08-07 | 湖北师范大学 | Drawing device for teaching |
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2018
- 2018-04-17 CN CN201810341693.9A patent/CN108407508B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE525592C (en) * | 1928-10-04 | 1931-05-28 | Askania Werke A G Vormals Cent | Hyperbolic draftsman |
| US2660790A (en) * | 1951-07-30 | 1953-12-01 | Polakowski Marian | Instrument for drawing conic sections |
| SU539790A1 (en) * | 1975-06-20 | 1976-12-25 | Предприятие П/Я А-1649 | Conic section drawing tool |
| CN2198125Y (en) * | 1994-08-24 | 1995-05-24 | 曹虎林 | Conic curve drawing instrument |
| CN2310682Y (en) * | 1997-11-06 | 1999-03-17 | 杨振起 | Para-curve gauge |
| CN203920146U (en) * | 2014-04-25 | 2014-11-05 | 朱延波 | A kind of Multifunctional conic section ruler |
| CN205997593U (en) * | 2016-07-12 | 2017-03-08 | 叶裕洋 | Chi drawn by parabola |
| CN211195623U (en) * | 2018-04-17 | 2020-08-07 | 湖北师范大学 | Drawing device for teaching |
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| Publication number | Publication date |
|---|---|
| CN108407508A (en) | 2018-08-17 |
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