CN112869369A

CN112869369A - Drawing device for engineering design

Info

Publication number: CN112869369A
Application number: CN202110035963.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-06-01

Abstract

The invention discloses a drawing device for engineering design, which relates to the technical field of engineering design and comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a straight cylinder, the straight cylinder is connected with a vertical rotating mechanism for rotating in the vertical direction of a drawing, and the vertical rotating mechanism comprises a first lug, a second lug, a transverse plate, a quarter circular plate, a tooth block, a driving motor, a second gear ring, a rotating shaft, a second bearing and a third bearing; the top of the bent sleeve is fixedly connected with a horizontal rotating structure, and the horizontal rotating structure comprises a straight rod, a third spring, a sliding plate, a pull ring, a straight plate, a convex block, a first bearing, a first gear ring and a toothed plate; the top of the outer ring of the first bearing and the top of the bump are fixedly connected with the supporting plate, so that different parts of a drawing can be conveniently rotated to an engineer for drawing, and the drawing working pressure is reduced.

Description

Drawing device for engineering design

Technical Field

The invention relates to the technical field of engineering design, in particular to a drawing device for engineering design.

Background

Engineering design is the activity of comprehensively analyzing and demonstrating the technical, economic, resource, environmental and other conditions required by construction engineering according to the requirements of the engineering and compiling construction engineering design files. Engineering design is the process of creating engineering product concepts and plans in a targeted manner by people using scientific and technological knowledge and methods, and almost relates to all fields of human activities.

Engineering design is the process of creating engineering product concepts and plans in a targeted manner by people using scientific and technological knowledge and methods, and almost relates to all fields of human activities. Although the engineering cost usually accounts for only a small part (8-15%) of the final product cost, it has a decisive influence on the advancement and competitive power of the product, and usually determines 70-80% of the manufacturing cost and marketing service cost. Therefore, the engineering design is the most important pillar of industrial civilization in the modern society, is the core link of industrial innovation and is the faucet of the productivity of the modern society. The level and capacity of engineering design is one of the determinants of the innovative and competitive capacities of the national and regional industries.

Often can use the drawing as the means of design when carrying out engineering design on the market, but the in-process engineer who draws often needs to draw on the platform, and general platform is the level and places, and the flexibility is low excessively, and inconvenient different positions of drawing are rotated to engineer department and are drawn, have increased drawing operating pressure, and simultaneously, inconvenient regulation to vertical state during the drawing show is unfavorable for the show of actually explaining.

Therefore, a drawing device for engineering design is proposed to solve the above problems.

Disclosure of Invention

The present invention is directed to a drawing device for engineering design to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a drawing device for engineering design comprises a bottom plate, a supporting plate and a switch, wherein a straight cylinder is fixedly connected to the top of the bottom plate, the straight cylinder is connected with a vertical rotating mechanism which is used for rotating in the vertical direction of a drawing, the vertical rotating mechanism comprises a first lug, a second lug, a transverse plate, a quarter circular plate, a tooth block, a driving motor, a second gear ring, a rotating shaft, a second bearing and a third bearing, the left inner wall and the right inner wall of the straight cylinder are respectively and fixedly provided with the driving motor and the second bearing, the inner ring of the second bearing is fixedly connected with the rotating shaft, the outer wall of the rotating shaft is fixedly connected with a second gear ring, the rotating shaft is fixedly connected with the output end of the driving motor, the front side wall of the straight cylinder is fixedly connected with the quarter circular plate, the inner wall of the quarter circular plate is uniformly and fixedly connected with the tooth, when the second gear ring is meshed and contacted with a quarter circular plate at the lowest end of the tooth block, the top surface of the supporting plate is in a vertical state, the top of the tooth block is fixedly connected with a transverse plate, the transverse plate is fixedly connected with a bent sleeve, the front side wall of the bent sleeve is fixedly connected with a second convex block, the second convex block is fixedly connected with a third bearing, the third bearing is fixedly connected with a first convex block, and the first convex block is fixedly connected with the outer wall of the straight cylinder;

the top of the bent sleeve is fixedly connected with a horizontal rotating structure, the horizontal rotating structure comprises a straight rod, a third spring, a sliding plate, a pull ring, a straight plate, a convex block, a first bearing, a first gear ring and a toothed plate, the bottom of the straight rod is fixedly connected with the top of the bent sleeve, the top of the straight rod is fixedly connected with the inner ring of the first bearing, the bottom of the outer wall of the straight rod is fixedly connected with a first gear ring, the front end of the first gear ring is engaged and connected with a toothed plate, the front end surface of the toothed plate is fixedly connected with a sliding plate, the middle end of the sliding plate is fixedly connected with a convex block, the convex block is fixedly connected with a third spring which is sleeved at the outer end of the sliding plate, the front end of the third spring is fixedly connected with a straight plate, the straight plate is attached to and slidably connected with the sliding plate through a sliding hole, and the front end of the sliding plate is fixedly connected with a pull ring for pulling the sliding plate to move;

the top of the outer ring of the first bearing and the top of the lug are fixedly connected with the supporting plate;

the paper pressing structure comprises a sliding plate, a circular plate, a rubber ring, an L-shaped plate, a pressing plate, a circular rod, a sliding rod, a rubber pad, a first spring and a second spring, wherein the bottom of the L-shaped plate is fixedly arranged at the lower end of the top surface of the supporting plate, the bottom of the transverse part of the L-shaped plate is uniformly and fixedly connected with the second spring, the bottom of the second spring is fixedly connected with the pressing plate, the side wall of the pressing plate is in fit sliding connection with the inner wall of the vertical part of the L-shaped plate, the rubber ring is symmetrically and fixedly arranged at two ends of the top of the supporting plate, the circular rod is inserted in the rubber ring, the top of the circular rod is fixedly connected with a sliding sleeve, the sliding sleeve is in fit sliding connection with the sliding plate, the front end of the sliding plate is in slide connection with a sliding rod through a sliding hole, the paper pressing device is characterized in that a rubber pad is fixedly connected to the bottom of the circular plate, a first spring sleeved on the outer wall of the sliding rod is fixedly connected between the top of the rubber pad and the bottom of the sliding plate, and paper is pressed on the top of the supporting plate through the rubber pad and the pressing plate.

Furthermore, the outer end of the second bearing is fixedly connected with the inner wall of the straight cylinder, and the inner ring of the second bearing is fixedly connected with the inner wall of the rotating shaft.

Furthermore, the bottom of the bending sleeve is in fit contact with the top of the straight cylinder when the second gear ring is meshed and connected with the quarter round plate at the middle end of the gear block.

Furthermore, the inner ring of the third bearing is fixedly connected with the second bump, and the outer ring of the third bearing is fixedly connected with the first bump.

Furthermore, the side wall of the front end of the supporting plate is fixedly connected with a switch, the switch is electrically connected with an external power supply through a socket, the switch is electrically connected with a driving motor, and the driving motor selects a servo motor.

Furthermore, the shape of the sliding plate is square, so that the sliding plate can slide in a limiting manner.

Further, the front end of the pull ring is flush with the front end of the support plate.

Furthermore, the pressing plate and the rubber pad are both made of rubber materials.

Further, the distance between the second springs is controlled to be 5-8 cm.

Furthermore, the sliding plate is made of materials, the size of the outer ring of the sliding plate is larger than that of the inner ring of the sliding sleeve, and the sliding plate is stable after the position of the sliding plate is adjusted.

The invention has the beneficial effects that:

according to the invention, the drawing paper is placed on the supporting plate, the bottom of the drawing paper is inserted below the pressing plate of the paper pressing structure, the second spring moves the pressing plate downwards, the pressing plate presses and fixes the bottom of the drawing paper, then the round rod is rotated, the round rod drives the sliding sleeve to rotate and face the vertex angle of the top of the drawing paper, the sliding plate slides, the sliding plate drives the rubber pad to move to brake the vertex angle of the top of the drawing paper, the circular plate is loosened, the first spring drives the rubber pad to press and fix the vertex angle of the top of the drawing paper, the drawing paper is conveniently fixed, the drawing paper is prevented from sliding when the supporting plate moves, meanwhile, the round rod drives the sliding sleeve to rotate, the sliding plate drives the rubber pad to slide in the sliding sleeve, the rubber pad is conveniently rotated to different positions, and;

according to the drawing device, the pull ring of the horizontal rotating structure is pulled, the movable toothed plate of the pull ring is separated from the first gear ring, the first bearing rotates on the straight rod, the first bearing drives the supporting plate to rotate, the supporting plate drives different parts of a drawing to rotate and just face workers, then the pull ring is loosened, the third spring pushes the protruding block to move, the protruding block drives the sliding plate to move, the sliding plate drives the toothed plate to be meshed with the first gear ring, the supporting plate is positioned, the stability of the drawing after the drawing rotates is guaranteed, the different parts of the drawing can be conveniently rotated to an engineer for drawing, and the drawing working pressure is reduced.

According to the invention, the rotating shaft is driven to rotate by the driving motor of the vertical rotating mechanism, the rotating shaft drives the second gear ring to rotate, the second gear ring drives the quarter-circular plate to rotate upwards through the gear block, the quarter-circular plate drives the bending sleeve to rotate along the first lug through the transverse plate, the first lug drives the supporting plate to rotate to a vertical state, so that a drawing fixed by the supporting plate is conveniently driven to rotate to the vertical state, and the drawing can be conveniently adjusted to the vertical state for explanation and display during the drawing display.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a left side view of the structure of the present invention;

FIG. 3 is a bottom left view of the inventive structure;

FIG. 4 is a bottom right view of the inventive structure;

FIG. 5 is a schematic view of a platen of the present invention;

FIG. 6 is a left side cross-sectional view of the inventive structure;

FIG. 7 is a top cross-sectional view of the structure of the present invention;

FIG. 8 is an enlarged view of the structure at A of FIG. 2 according to the present invention;

FIG. 9 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 10 is an enlarged view of the structure of FIG. 7 at C according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. the bottom plate 2, the straight cylinder 3, the support plate 4, the paper pressing structure 401, the sliding sleeve 402, the sliding plate 403, the circular plate 404, the rubber ring 405, the L-shaped plate 406, the pressing plate 407, the circular rod 408, the sliding rod 409, the rubber pad 410, the first spring 411, the second spring 5, the bending sleeve 6, the horizontal rotating structure 601, the straight rod 602, the third spring 603, the sliding plate 604, the pulling ring 605, the straight plate 606, the projection 607, the first bearing 608, the first gear ring 609, the toothed plate 7, the vertical rotating mechanism 701, the first projection 702, the second projection 703, the transverse plate 704, the quarter circular plate 705, the toothed block 706, the driving motor 707, the second gear ring 708, the rotating shaft 709, the second bearing 710, the third bearing 8 and the switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Example 1

As shown in fig. 1, 2, 3, 4, 6, 7, and 10, the drawing apparatus for engineering design includes a bottom plate 1, a supporting plate 3, and a switch 8, wherein a vertical cylinder 2 is fixedly connected to a top of the bottom plate 1, the vertical cylinder 2 is connected to a vertical rotating mechanism 7 for rotating in a vertical direction of a drawing, the vertical rotating mechanism 7 includes a first protrusion 701, a second protrusion 702, a horizontal plate 703, a quarter circular plate 704, a tooth block 705, a driving motor 706, a second ring 707, a rotating shaft 708, a second bearing 709, and a third bearing 710, the driving motor 706 and the second bearing 709 are respectively and fixedly installed on left and right inner walls of the vertical cylinder 2, the rotating shaft 708 is fixedly connected to an inner ring of the second bearing 709, the second ring 707 is fixedly connected to an outer wall of the rotating shaft 708, the rotating shaft 708 is fixedly connected to an output end of the driving motor 706, the quarter circular plate 704 is fixedly connected to a front side wall of the vertical cylinder 2, the tooth blocks, the tooth block 705 is engaged with the second tooth ring 707, the top surface of the support plate 3 is in a vertical state when the second tooth ring 707 is engaged with the quarter round plate 704 at the lowest end of the tooth block 705, the top of the tooth block 705 is fixedly connected with a horizontal plate 703, the horizontal plate 703 is fixedly connected with a bending sleeve 5, the front side wall of the bending sleeve 5 is fixedly connected with a second lug 702, the second lug 702 is fixedly connected with a third bearing 710, the third bearing 710 is fixedly connected with a first lug 701, the first lug 701 is fixedly connected with the outer wall of the straight barrel 2, the outer end of the second bearing 709 is fixedly connected with the inner wall of the straight barrel 2, the inner ring of the second bearing 709 is fixedly connected with the inner wall of the rotating shaft 708, the bottom of the bending sleeve 5 is attached to and contacted with the top of the straight barrel 2 when the second tooth ring 707 is engaged with the quarter round plate 704 at the middle end of the tooth block 705, the inner ring of the third bearing 710 is fixedly connected with the second lug 702, the side wall of the front end of the supporting plate 3 is fixedly connected with a switch 8, the switch 8 is electrically connected with an external power supply through a socket, the switch 8 is electrically connected with a driving motor 706, the driving motor 706 adopts a servo motor, the driving motor 706 of the vertical rotating mechanism 7 drives a rotating shaft 708 to rotate, the rotating shaft 708 drives a second gear ring 707 to rotate, the second gear ring 707 drives a quarter circular plate 704 to rotate upwards through a tooth block 705, the quarter circular plate 704 drives the bending sleeve 5 to rotate along a first lug 701 through a transverse plate 703, the first lug 701 drives the supporting plate 3 to rotate to a vertical state, so that a drawing fixed by the supporting plate 3 is driven to rotate to the vertical state, and the drawing can be conveniently adjusted to the vertical state for explanation and display during the;

example 2

Example 2 is a further modification to example 1.

As shown in fig. 1, 2, 3, 4, and 8, a horizontal rotating structure 6 is fixedly connected to the top of the curved sleeve 5, the horizontal rotating structure 6 includes a straight rod 601, a third spring 602, a sliding plate 603, a pull ring 604, a straight plate 605, a protrusion 606, a first bearing 607, a first gear ring 608, and a gear plate 609, the bottom of the straight rod 601 is fixedly connected to the top of the curved sleeve 5, the top of the straight rod 601 is fixedly connected to an inner ring of the first bearing 607, the bottom of the outer wall of the straight rod 601 is fixedly connected to a first gear ring 608, the front end of the first gear ring 608 is engaged with the gear plate 609, the front end surface of the gear plate 609 is fixedly connected to the sliding plate 603, the middle end of the sliding plate 603 is fixedly connected to the protrusion 606, the protrusion 606 is fixedly connected to the third spring 602, the third spring 602 is sleeved on the outer end of the sliding plate 603, the front end of the third spring 602 is fixedly connected to the straight, the front end of the sliding plate 603 is fixedly connected with a pull ring 604 for pulling the sliding plate 603 to move, the sliding plate 603 is square, limited sliding of the sliding plate 603 is realized, the front end of the pull ring 604 is flush with the front end of the support plate 3, the top of an outer ring of the first bearing 607 and the top of the convex block 606 are fixedly connected with the support plate 3, the pull ring 604 of the horizontal rotating structure 6 is pulled, the pull ring 604 drives the tooth plate 609 to separate from the first gear ring 608, the first bearing 607 rotates on the straight rod 601, the first bearing 607 drives the support plate 3 to rotate, the support plate 3 drives different parts to rotate to face a drawing to a worker, then the pull ring 604 is released, the third spring 602 pushes the convex block 606 to move, the convex block 606 drives the sliding plate 603 to move, the sliding plate 603 drives the tooth plate 609 to mesh with the first gear ring 608, positioning of the support plate 3 is realized, stability after rotation, the drawing working pressure is reduced.

Example 3

Example 3 is a further modification to example 1.

As shown in fig. 1, 2, 3, 4, 5, and 9, a paper pressing structure 4 for fixing a drawing is connected to the top of the supporting plate 3, the paper pressing structure 4 includes a sliding plate 402, a circular plate 403, a rubber ring 404, an L-shaped plate 405, a pressing plate 406, a circular rod 407, a sliding rod 408, a rubber pad 409, a first spring 410 and a second spring 411, the bottom of the L-shaped plate 405 is fixedly installed at the lower end of the top surface of the supporting plate 3, the bottom of the transverse portion of the L-shaped plate 405 is uniformly and fixedly connected with the second spring 411, the bottom of the second spring 411 is fixedly connected with the pressing plate 406, the side wall of the pressing plate 406 is in sliding contact with the inner wall of the upright portion of the L-shaped plate 405, the rubber ring 404 is symmetrically and fixedly installed at both ends of the top of the supporting plate 3, the circular rod 407 is inserted in the rubber ring 404, the top of the circular rod 407 is fixedly, the top of the sliding rod 408 is fixedly connected with a circular plate 403 used for lifting the sliding rod 408, the bottom of the circular plate 403 is fixedly connected with a rubber pad 409, a first spring 410 sleeved on the outer wall of the sliding rod 408 is fixedly connected between the top of the rubber pad 409 and the bottom of the sliding plate 402, the paper is pressed on the top of the support plate 3 by the rubber pad 409 and the pressing plate 406, the pressing plate 406 and the rubber pad 409 are both made of rubber materials, the distance between the second springs 411 is controlled to be 5-8cm, the sliding plate 402 is made of materials, the size of the outer ring of the sliding plate 402 is larger than that of the inner ring of the sliding sleeve 401, the position of the sliding plate 402 is adjusted and stabilized, the paper is placed on the support plate 3, the bottom of the paper is inserted below the pressing plate 406 of the paper pressing structure 4, the second spring 411 moves the pressing plate 406 downwards, the pressing plate 406 presses and fixes the bottom of the paper, sliding plate 402, slide 402 drives the apex angle department that rubber pad 409 removed braking drawing top, loosen circular plate 403, first spring 410 drives rubber pad 409 and presses the apex angle department at the drawing top, the realization is pushed down fixedly to the apex angle at drawing top, conveniently fix the drawing, the drawing takes place to slide when avoiding backup pad 3 activity, and simultaneously, round bar 407 drives sliding sleeve 401 and rotates, slide 402 drives rubber pad 409 and slides in sliding sleeve 401, make rubber pad 409 conveniently rotate to different positions, make the device be fit for not unidimensional drawing and fix.

When the device is used, the drawing is placed on the supporting plate 3, the bottom of the drawing is inserted below the pressing plate 406 of the paper pressing structure 4, the second spring 411 moves the pressing plate 406 downwards, the pressing plate 406 presses and fixes the bottom of the drawing, then the round rod 407 is rotated, the round rod 407 drives the sliding sleeve 401 to rotate to face the vertex angle of the top of the drawing, the sliding plate 402 is slid, the sliding plate 402 drives the rubber pad 409 to move to brake the vertex angle of the top of the drawing, the round plate 403 is loosened, the first spring 410 drives the rubber pad 409 to press and fix the vertex angle of the top of the drawing, the fixing of the top of the drawing is facilitated, the sliding of the drawing when the supporting plate 3 moves is avoided, meanwhile, the round rod 407 drives the sliding sleeve 401 to rotate, the sliding plate 402 drives the rubber pad 409 to slide in the sliding sleeve 401, the rubber pad 409 is made to conveniently rotate to different positions, and; need rotate other positions of drawing paper to just to the staff, the pull ring 604 of pulling horizontal rotating structure 6, pull ring 604 drives pinion rack 609 and the separation of first ring gear 608, first bearing 607 rotates on straight-bar 601, first bearing 607 drives backup pad 3 and rotates, backup pad 3 drives the different positions of drawing and rotates just to the staff, then loosen pull ring 604, third spring 602 promotes lug 606 and removes, lug 606 drives slide 603 and removes, slide 603 drives pinion rack 609 and the meshing of first ring gear 608, the realization is to backup pad 3's location, the drawing is guaranteed to rotate back stability, conveniently rotate different positions of drawing to engineer department and draw, the pressure of drawing work is reduced.

When needing to explain, start driving motor 706 of vertical slewing mechanism 7 through switch 8, driving motor 706 drives pivot 708 and rotates, pivot 708 drives second ring gear 707 and rotates, second ring gear 707 passes through tooth piece 705 drive quarter plectane 704 and upwards rotates, quarter plectane 704 drives crooked sleeve 5 through diaphragm 703 and rotates along first lug 701, first lug 701 drives backup pad 3 and rotates to vertical state, be convenient for drive the fixed drawing of backup pad 3 and rotate to vertical state, conveniently adjust to vertical state during the drawing show and explain the show.

In the description herein, reference to the description of the terms "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a drawing device for engineering design, includes bottom plate (1), backup pad (3) and switch (8), its characterized in that: the top fixedly connected with straight section of thick bamboo (2) of bottom plate (1), straight section of thick bamboo (2) are connected with and are used for the vertical direction upward pivoted vertical slewing mechanism (7) of drawing.

2. The drawing apparatus for engineering design according to claim 1, wherein: the vertical rotating mechanism (7) comprises a first convex block (701), a second convex block (702), a transverse plate (703), a quarter circular plate (704), a tooth block (705), a driving motor (706), a second gear ring (707), a rotating shaft (708), a second bearing (709) and a third bearing (710), wherein the left inner wall and the right inner wall of the straight cylinder (2) are respectively fixedly provided with the driving motor (706) and the second bearing (709), the inner ring of the second bearing (709) is fixedly connected with the rotating shaft (708), the outer wall of the rotating shaft (708) is fixedly connected with the second gear ring (707), the rotating shaft (708) is fixedly connected with the output end of the driving motor (706), the front side wall of the straight cylinder (2) is fixedly connected with the quarter circular plate (704), the inner wall of the quarter circular plate (704) is uniformly and fixedly connected with the tooth block (705) along the circumferential direction, and the tooth block (705) is meshed with the second gear ring (, when the second gear ring (707) is in meshing contact with a quarter circular plate (704) at the lowest end of the gear block (705), the top surface of the support plate (3) is in a vertical state, a transverse plate (703) is fixedly connected to the top of the gear block (705), a bent sleeve (5) is fixedly connected to the transverse plate (703), a second bump (702) is fixedly connected to the front side wall of the bent sleeve (5), a third bearing (710) is fixedly connected to the second bump (702), a first bump (701) is fixedly connected to the third bearing (710), and the first bump (701) is fixedly connected with the outer wall of the straight cylinder (2);

the top of the bent sleeve (5) is fixedly connected with a horizontal rotating structure (6), the horizontal rotating structure (6) comprises a straight rod (601), a third spring (602), a sliding plate (603), a pull ring (604), a straight plate (605), a convex block (606), a first bearing (607), a first gear ring (608) and a toothed plate (609), the bottom of the straight rod (601) is fixedly connected with the top of the bent sleeve (5), the top of the straight rod (601) is fixedly connected with an inner ring of the first bearing (607), the bottom of the outer wall of the straight rod (601) is fixedly connected with the first gear ring (608), the front end of the first gear ring (608) is connected with the toothed plate (609) in a meshing manner, the front end face of the toothed plate (609) is fixedly connected with the sliding plate (603), the middle end of the sliding plate (603) is fixedly connected with the convex block (606), and the convex block (606) is fixedly connected with the third spring (, the third spring (602) is sleeved at the outer end of the sliding plate (603), a straight plate (605) is fixedly connected to the front end of the third spring (602), the straight plate (605) is attached to the sliding plate (603) through a sliding hole, and is in sliding connection with the sliding plate, and a pull ring (604) for pulling the sliding plate (603) to move is fixedly connected to the front end of the sliding plate (603);

the top of the outer ring of the first bearing (607) and the top of the lug (606) are fixedly connected with the support plate (3);

the top of the supporting plate (3) is connected with a paper pressing structure (4) for fixing a drawing, the paper pressing structure (4) comprises a sliding plate (402), a circular plate (403), a rubber ring (404), an L-shaped plate (405), a pressing plate (406), a circular rod (407), a sliding rod (408), a rubber pad (409), a first spring (410) and a second spring (411), the bottom of the L-shaped plate (405) is fixedly installed at the lower end of the top surface of the supporting plate (3), the bottom of the transverse part of the L-shaped plate (405) is uniformly and fixedly connected with the second spring (411), the bottom of the second spring (411) is fixedly connected with the pressing plate (406), the side wall of the pressing plate (406) is in fit sliding connection with the inner wall of the upright part of the L-shaped plate (405), the rubber ring (404) is symmetrically and fixedly installed at the two ends of the top of the supporting plate (3), the, the top fixedly connected with sliding sleeve (401) of round bar (407), laminating sliding connection has slide plate (402) in sliding sleeve (401), the front end of slide plate (402) has slide bar (408) through the slide opening sliding connection who sets up, the top fixedly connected with of slide bar (408) is used for circular plate (403) that slide bar (408) were mentioned, the bottom fixedly connected with rubber pad (409) of circular plate (403), fixedly connected with cover is at first spring (410) of slide bar (408) outer wall between the top of rubber pad (409) and the bottom of slide plate (402), rubber pad (409) and clamp plate (406) are pressed the picture paper at the top of backup pad (3), the outer end of second bearing (709) and the inner wall fixed connection of straight section of thick bamboo (2), the inner ring of second bearing (709) and the inner wall fixed connection of pivot (708).

3. The drawing apparatus for engineering design according to claim 2, wherein: when the second gear ring (707) is meshed and connected with a quarter round plate (704) at the middle end of the gear block (705), the bottom of the bent sleeve (5) is in contact with the top of the straight cylinder (2).

4. The drawing apparatus for engineering design according to claim 3, wherein: the inner ring of the third bearing (710) is fixedly connected with the second lug (702), and the outer ring of the third bearing (710) is fixedly connected with the first lug (701).

5. The drawing device for engineering design according to claim 4, wherein: the side wall fixedly connected with switch (8) of front end of backup pad (3), switch (8) pass through socket and external power electric connection, switch (8) and driving motor (706) electric connection, and driving motor (706) choose for use servo motor.