Drawing board for road design

By setting up tiling and angle adjustment mechanisms on the drawing board, the problem of wrinkles caused by the inability to tile the drawing paper was solved, resulting in a more efficient and stable drawing process.

CN223672142UActive Publication Date: 2025-12-16CHINA CONSTRUCTION SIXTH ENGINEERING DIVISION CO LTD
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Patent Information

Application Number
CN202422597155.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-12-16
Estimated Expiration
2034-10-25

AI Technical Summary

Technical Problem

In existing technologies, drawings cannot be laid flat, which easily leads to wrinkles and affects drawing efficiency.

Method used

A drawing board including a tiling mechanism and an angle adjustment mechanism is designed. The drawing paper is fixed by a first threaded rod and a fixing head, the drawing paper is tiled by a sliding frame and a first pull rod, and the angle of the drawing board is adjusted by a support plate and a connecting ear plate, thereby improving stability and drawing efficiency.

Benefits of technology

It effectively prevents paper wrinkles, improves drawing efficiency and stability, and enhances the comfort and ease of use of the drawing board.

✦ Generated by Eureka AI based on patent content.

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Abstract

A drawing board for road design comprises a storage box, an angle adjusting mechanism, a drawing board body and a paving mechanism. The tiling mechanism comprises a connecting plate, a first threaded rod, a first rotating handle, a fixing head, a sliding frame, a first pull rod and a pressing plate, the first threaded rod penetrates through the connecting plate and is rotationally connected with the connecting plate, the fixing head is fixedly arranged at the bottom end of the first threaded rod and makes contact with the top face of the drawing plate, and a first sliding groove is formed in the side wall of the drawing plate; the first sliding block is inserted into the first sliding groove and horizontally slides along the first sliding groove, the first pull rod penetrates through the top face of the sliding frame and vertically slides along the sliding frame, and the pressing plate is fixedly arranged at the bottom end of the first pull rod and makes contact with the top face of the drawing plate. The first threaded rod and the fixing head are arranged, the first threaded rod and the fixing head are used in cooperation to fix the drawing paper, the sliding frame, the first pull rod and the pressing plate are arranged, the sliding frame horizontally slides along the drawing plate through the first sliding block, the pressing plate horizontally moves along with the sliding frame through the first pull rod to flatly lay the drawing paper, the drawing paper is prevented from wrinkling, and the drawing efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to road design technical field, more specifically, especially relate to a drawing board for road design. BACKGROUND

[0002] Designing city government road usually starts from making drawing, and making drawing usually needs corresponding drawing board. Drawing board is a kind of tool specially designed for drawing and making drawing, provides smooth surface and convenient workspace, using drawing board helps to improve the precision and efficiency of drawing, and also provides better control and comfort.

[0003] The patent with the authorized announcement number CN221292734U discloses a drawing board for city road design, including storage box, the upper side of the storage box is equipped with the box cover of rotation connection, and the lower side of the box cover is equipped with the mounting pad;The inside of the storage box is equipped with drawing board, and the drawing board is equipped with buffer spring between the storage box, and the upper end of the drawing board and buffer spring is fixed;The upper side of the drawing board is equipped with mounting block, and one end of the mounting block is equipped with bolt, and the bolt and mounting block are threadedly connected;One side of the mounting pad is equipped with compression spring, and one end of the compression spring is equipped with compression head, this patent places drawing paper on the drawing board during drawing, and fixes it by the bolt at one end of the mounting block, which is convenient for the stability of the drawing paper during drawing, and when multiple rounds of area visits are needed, the box cover is restored to the storage box, at this time, the compression spring will press the drawing board to the inside of the storage box, thereby achieving the effect of convenient storage and carrying, but this patent only fixes the four corners of the drawing paper, cannot lay the drawing paper flat, and is prone to cause the drawing paper to wrinkle, thereby affecting the drawing efficiency. UTILITY MODEL CONTENTS

[0004] The utility model discloses to overcome the problem that drawing paper cannot be laid flat, leading to wrinkles in the drawing paper and affecting drawing efficiency, and aims to provide a drawing board for road design.

[0005] A drawing board for road design, comprising a storage box, an angle adjusting mechanism, a drawing board and a laying mechanism, the drawing board is rotatably connected to the storage box, the angle adjusting mechanism is arranged between the storage box and the drawing board, and the laying mechanism is arranged on the drawing board.

[0006] The tiling mechanism comprises a connecting plate, a first threaded rod, a first handle, a fixed head, a sliding frame, a first pull rod and a pressing plate, the connecting plate is fixedly arranged at one end of the side wall of the drawing board, the first threaded rod penetrates through the connecting plate and is rotationally connected with the connecting plate, the first handle is fixedly arranged at the top end of the first threaded rod, the fixed head is fixedly arranged at the bottom end of the first threaded rod and is in contact with the top surface of the drawing board, the bottom end of the sliding frame is fixedly provided with a first sliding block, the side wall of the drawing board is provided with a first sliding groove, the first sliding block is inserted into the first sliding groove and horizontally slides along the first sliding groove, the first pull rod penetrates through the top surface of the sliding frame and vertically slides along the sliding frame, and the pressing plate is fixedly arranged at the bottom end of the first pull rod and is in contact with the top surface of the drawing board.

[0007] Further, the tiling mechanism further comprises a first spring, the first spring is sleeved on the first pull rod, the top end of the first spring is fixedly connected with the sliding frame, and the bottom end of the first spring is fixedly connected with the pressing plate.

[0008] Further, the top end of the first pull rod is fixedly provided with a handle for pulling the first pull rod.

[0009] Further, the inside of the storage box is fixedly provided with a first connecting ear plate, the side wall of the drawing board is fixedly provided with a connecting block, and the connecting block is hingedly connected with the first connecting ear plate.

[0010] Further, the angle adjusting mechanism comprises a second sliding block, a second connecting ear plate, a supporting plate and a third connecting ear plate, the inside of the storage box is provided with a second sliding groove, the second sliding block is inserted into the second sliding groove and horizontally slides along the second sliding groove, the second connecting ear plate is fixedly arranged at the top end of the second sliding block, one end of the supporting plate is hingedly connected with the second connecting ear plate, the third connecting ear plate is fixedly arranged at the bottom surface of the drawing board, and the other end of the supporting plate is hingedly connected with the third connecting ear plate.

[0011] Further, the angle adjusting mechanism further comprises a second threaded rod, a guide rod, a second handle and a positioning assembly, the second threaded rod is inserted into the second sliding groove and rotationally connected with the storage box, two guide rods are fixedly arranged at the two sides in the second sliding groove, the second sliding block is sleeved on the second threaded rod and the guide rod and horizontally slides along the second sliding groove through the second threaded rod, one end of the second threaded rod penetrates through the storage box and is fixedly connected with the second handle, and the positioning assembly is arranged between the second handle and the storage box.

[0012] Further, the positioning assembly comprises a second pull rod, a baffle and a plug, the second pull rod penetrates through the second handle and horizontally slides along the second handle, the baffle is fixedly arranged at one end of the second pull rod away from the second handle, one end of the plug is fixedly connected with the side wall of the baffle, and the other end of the plug is inserted into the side wall of the storage box.

[0013] Further, the positioning assembly further comprises a second spring, the second spring is sleeved on the second pull rod, one end of the second spring is fixedly connected with the side wall of the second handle, and the other end of the second spring is fixedly connected with the side wall of the baffle.

[0014] Further, the top end of the storage box is provided with a box cover for closing the inside of the storage box, and the box cover slides horizontally along the storage box.

[0015] Further, the side wall of the storage box is fixedly provided with a handle for carrying the device.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] ①The utility model provides a drawing board for road design, first threaded rod and fixed head are used in pairs to fix the drawing paper, a sliding frame, a first pull rod and a pressing plate are arranged, the sliding frame slides horizontally along the drawing board through a first sliding block, the pressing plate horizontally moves with the sliding frame through the first pull rod to lay the drawing paper flat, prevents the drawing paper from wrinkling and improves drawing efficiency.

[0018] ②The utility model provides a drawing board for road design, a second connecting ear plate, a supporting plate and a third connecting ear plate are arranged, the supporting plate is hingedly connected to the second connecting ear plate at one end and is hingedly connected to the third connecting ear plate at the other end, the angle of the drawing board can be adjusted according to the use habit of the staff, and drawing efficiency is improved.

[0019] ③The utility model provides a drawing board for road design, an insertion block is arranged, the second pull rod and the baffle are used in pairs to make the insertion block insert into the side wall of the storage box to lock the second rotating handle, and the stability of the device is improved. DRAWINGS

[0020] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0021] Figure 1 It is the overall structure schematic view of the drawing board for road design in the utility model.

[0022] Figure 2 It is the specific structure schematic view of the laying mechanism in the utility model.

[0023] Figure 3 It is the specific structure schematic view of the angle adjusting mechanism in the utility model.

[0024] Figure 4 It is the enlarged view of A in the utility model.

[0025] Figure 5 It is the specific structure schematic view of the storage box in the utility model.

[0026] In the diagram: 1. Storage box; 2. Drawing board; 3. Connecting plate; 4. First threaded rod; 5. First handle; 6. Fixing head; 7. Sliding frame; 8. First pull rod; 9. Pressure plate; 10. First slider; 11. First slide groove; 12. First spring; 13. Handle; 14. First connecting ear plate; 15. Connecting block; 16. Second slider; 17. Second connecting ear plate; 18. Support plate; 19. Third connecting ear plate; 20. Second slide groove; 21. Second threaded rod; 22. Guide rod; 23. Second handle; 24. Second pull rod; 25. Baffle; 26. Insert block; 27. Second spring; 28. Box lid; 29. ​​Handle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 As shown, a road design drawing board includes a storage box 1, an angle adjustment mechanism, a drawing board 2, and a tiling mechanism. The drawing board 2 is rotatably connected to the storage box 1. The angle adjustment mechanism is located between the storage box 1 and the drawing board 2, and the tiling mechanism is located on the drawing board 2. Specifically, the drawing board 2 is rotatably connected to the storage box 1, an angle adjustment mechanism is located between the storage box 1 and the drawing board 2, and a tiling mechanism is located on the drawing board 2.

[0029] like Figure 2As shown, the tiling mechanism comprises a connecting plate 3, a first threaded rod 4, a first handle 5, a fixed head 6, a sliding frame 7, a first pull rod 8 and a pressing plate 9, the connecting plate 3 is fixedly arranged at one end of the side wall of the drawing plate 2, the first threaded rod 4 penetrates through the connecting plate 3 and is rotationally connected with the connecting plate 3, the first handle 5 is fixedly arranged at the top end of the first threaded rod 4, the fixed head 6 is fixedly arranged at the bottom end of the first threaded rod 4 and is in contact with the top surface of the drawing plate 2, the sliding frame 7 is fixedly arranged at the bottom end of the first sliding block 10, the side wall of the drawing plate 2 is provided with a first sliding groove 11, the first sliding block 10 is inserted into the first sliding groove 11 and horizontally slides along the first sliding groove 11, the first pull rod 8 penetrates through the top surface of the sliding frame 7 and vertically slides along the sliding frame 7, and the pressing plate 9 is fixedly arranged at the bottom end of the first pull rod 8 and is in contact with the top surface of the drawing plate 2.

[0030] In the utility model, through setting up first threaded rod 4 and fixed head 6, first threaded rod 4 and fixed head 6 cooperate to fix the drawing, through setting up sliding frame 7, first pull rod 8 and pressing plate 9, sliding frame 7 horizontally slides along drawing plate 2 through first sliding block 10, and pressing plate 9 horizontally moves along with sliding frame 7 through first pull rod 8 to lay the drawing flat, prevent the drawing from wrinkling, improve drawing efficiency.

[0031] The tiling mechanism further comprises a first spring 12, the first spring 12 is sleeved on the first pull rod 8, the top end of the first spring 12 is fixedly connected with the sliding frame 7, and the bottom end of the first spring 12 is fixedly connected with the pressing plate 9, and specifically, the first spring 12 is sleeved on the first pull rod 8, the top end of the first spring 12 is welded with the sliding frame 7, and the bottom end of the first spring 12 is welded with the pressing plate 9.

[0032] The top end of the first pull rod 8 is fixedly provided with a handle 13 for pulling the first pull rod 8, and specifically, the top end of the two first pull rods 8 is welded with the handle 13 for pulling the first pull rod 8.

[0033] The inside of the storage box 1 is fixedly provided with a first connecting lug plate 14, the side wall of the drawing plate 2 is fixedly provided with a connecting block 15, the connecting block 15 is hingedly connected with the first connecting lug plate 14, the inside of the storage box 1 is welded with the first connecting lug plate 14, the first connecting plate 3 is inserted with a pin, the side wall of the drawing plate 2 is welded with the connecting block 15, and the connecting block 15 is hingedly connected with the first connecting lug plate 14 through the pin.

[0034] As Figure 3 shown, the angle adjusting mechanism comprises a second sliding block 16, a second connecting lug 17, a supporting plate 18 and a third connecting lug 19, the inside of the storage box 1 is provided with a second sliding groove 20, the second sliding block 16 is inserted into the inside of the second sliding groove 20 and horizontally slides along the second sliding groove 20, the second connecting lug 17 is fixedly arranged at the top end of the second sliding block 16, one end of the supporting plate 18 is hinged to the second connecting lug 17, the third connecting lug 19 is fixedly arranged on the bottom surface of the drawing plate 2, the other end of the supporting plate 18 is hinged to the third connecting lug 19, and specifically, the inside of the storage box 1 is provided with the second sliding groove 20, the second sliding block 16 is inserted into the inside of the second sliding groove 20 and horizontally slides along the second sliding groove 20, the second connecting lug 17 is welded on the top end of the second sliding block 16, a pin is inserted into the second connecting lug 17, one end of the supporting plate 18 is hinged to the second connecting lug 17 through the pin, the third connecting lug 19 is welded on the bottom surface of the drawing plate 2, a pin is inserted into the third connecting lug 19, and the other end of the supporting plate 18 is hinged to the third connecting lug 19 through the pin.

[0035] In the utility model, through setting up second connecting lug 17, supporting plate 18 and third connecting lug 19, one end of supporting plate 18 is hinged to second connecting lug 17, and the other end of supporting plate 18 is hinged to third connecting lug 19, the angle of drawing plate 2 can be adjusted according to the use habit of staff, and then the drawing efficiency is improved.

[0036] The angle adjusting mechanism further comprises a second threaded rod 21, a guide rod 22, a second handle 23 and a positioning assembly, the second threaded rod 21 is inserted into the inside of the second sliding groove 20 and is rotationally connected with the storage box 1, the two guide rods 22 are fixedly arranged on the two sides in the inside of the second sliding groove 20, the second sliding block 16 is sleeved on the second threaded rod 21 and the guide rod 22 and horizontally slides along the second sliding groove 20 through the second threaded rod 21, one end of the second threaded rod 21 penetrates through the storage box 1 and is fixedly connected with the second handle 23, and the positioning assembly is arranged between the second handle 23 and the storage box 1, and specifically, the second threaded rod 21 is inserted into the inside of the second sliding groove 20 and is rotationally connected with the storage box 1, the two guide rods 22 are welded on the two sides in the inside of the second sliding groove 20, a through hole is formed in the second sliding block 16, the second sliding block 16 is sleeved on the second threaded rod 21 and the guide rod 22 through the through hole and horizontally slides along the second sliding groove 20 through the second threaded rod 21, one end of the second threaded rod 21 penetrates through the storage box 1 and is welded with the second handle 23, and the positioning assembly is arranged between the second handle 23 and the storage box 1.

[0037] As Figure 4As shown, the positioning assembly comprises a second pull rod 24, a baffle 25 and an insertion block 26, the second pull rod 24 penetrates through the second handle 23 and slides horizontally along the second handle 23, the baffle 25 is fixedly arranged at one end of the second pull rod 24 away from the second handle 23, and one end of the insertion block 26 is fixedly connected with the side wall of the baffle 25, and the other end of the insertion block 26 is inserted into the side wall of the storage box 1, and the specific performance is that the second pull rod 24 penetrates through the second handle 23 and slides horizontally along the second handle 23, one end of the second pull rod 24 away from the second handle 23 is welded with the baffle 25, one end of the insertion block 26 is welded with the side wall of the baffle 25, and the other end of the insertion block 26 is inserted into the side wall of the storage box 1.

[0038] In the utility model, through the setting of the insertion block 26, the cooperation between the second pull rod 24 and the baffle makes the insertion block 26 insert into the side wall of the storage box 1 to lock the second handle 23, and the stability of the device is improved.

[0039] The positioning assembly further comprises a second spring 27, the second spring 27 is sleeved on the second pull rod 24, one end of the second spring 27 is fixedly connected with the side wall of the second handle 23, and the other end of the second spring 27 is fixedly connected with the side wall of the baffle 25, and the specific performance is that the second spring 27 is sleeved on the second pull rod 24, one end of the second spring 27 is welded with the side wall of the second handle 23, and the other end of the second spring 27 is welded with the side wall of the baffle 25.

[0040] As Figure 5 As shown, the storage box 1 is provided with a box cover 28 at the top end for closing the inside of the storage box 1, and the box cover 28 slides horizontally along the storage box 1, and the specific performance is that the storage box 1 is provided with the box cover 28 at the top end for closing the inside of the storage box 1, and the box cover 28 slides horizontally along the storage box 1.

[0041] The side wall of the storage box 1 is fixedly provided with a handle 29 for carrying the device, and the specific performance is that the side wall of the storage box 1 is welded with the handle 29 for carrying the device.

[0042] The working principle of the drawing board for road design in the embodiment is:

[0043] The worker carries the device to the designated position by the handle 29, pulls out the box cover 28, places the drawing on the top surface of the drawing board 2, rotates the first handle 5, the first threaded rod 4 rotates with the first handle 5, the fixing head 6 rotates with the first threaded rod 4 and vertically moves downward to contact the drawing to fix the drawing, lifts the handle 13, the first pull rod 8 vertically slides upward along the sliding frame 7 with the handle 13, the pressing plate 9 vertically moves upward with the first pull rod 8, pulls the handle 13, the first pull rod 8 horizontally moves with the handle 13, the pressing plate 9 horizontally moves with the first pull rod 8, and the sliding frame 7 horizontally moves with the first pull rod 8, the sliding block horizontally slides along the first sliding groove 11 with the sliding frame 7, and then the handle 13 is released, the first pull rod 8 vertically slides downward along the sliding frame 7 with the handle 13, the pressing plate 9 vertically moves downward to contact the drawing, the handle 13 is pulled, the first pull rod 8 horizontally moves with the handle 13, the pressing plate 9 horizontally moves with the first pull rod 8, and the sliding frame 7 horizontally moves with the first pull rod 8, the sliding block horizontally slides along the first sliding groove 11 with the sliding frame 7 to lay the drawing flat, the second pull rod 24 is pulled, the second pull rod 24 horizontally moves along the second handle 23, the blocking piece 25 horizontally moves with the second pull rod 24, the insertion block 26 horizontally moves with the blocking piece 25 to pull out the side wall of the storage box 1, the second handle 23 is rotated, the second threaded rod 21 rotates with the second handle 23, the second sliding block 16 rotates with the second threaded rod 21 to horizontally slide along the second sliding groove 20, the second connecting ear plate 17 horizontally moves with the second sliding block 16, one end of the supporting plate 18 axially rotates along the second connecting ear plate 17, the other end of the supporting plate 18 axially rotates along the third connecting ear plate 19, the drawing board 2 axially rotates along the first connecting ear plate 14 with the connecting block 15 to a comfortable angle, the second pull rod 24 is pushed, the second pull rod 24 horizontally moves along the second handle 23, the blocking piece 25 horizontally moves with the pull rod, the insertion block 26 horizontally moves with the blocking piece 25 to insert into the side wall of the storage box 1, the second handle 23 is locked, and the drawing work is performed.

[0044] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A drawing board for road design, characterized by: The utility model provides a drawing board, including storage box (1), angle adjusting mechanism, drawing board (2) and flat mechanism, drawing board (2) is rotatably connected with storage box (1), angle adjusting mechanism is arranged between storage box (1) and drawing board (2), flat mechanism is arranged on drawing board (2), The flat mechanism includes connecting plate (3), first threaded rod (4), first handle (5), fixed head (6), sliding frame (7), first pull rod (8) and presser plate (9), connecting plate (3) is fixedly arranged on one end of the side wall of drawing board (2), first threaded rod (4) penetrates connecting plate (3) and is rotatably connected with connecting plate (3), first handle (5) is fixedly arranged on the top end of first threaded rod (4), fixed head (6) is fixedly arranged on the bottom end of first threaded rod (4) and is in contact with the top surface of drawing board (2), the bottom end of sliding frame (7) is fixedly provided with first sliding block (10), the side wall of drawing board (2) is provided with first sliding groove (11), first sliding block (10) is inserted into first sliding groove (11) and slides horizontally along first sliding groove (11), first pull rod (8) penetrates the top surface of sliding frame (7) and vertically slides along sliding frame (7), presser plate (9) is fixedly arranged on the bottom end of first pull rod (8) and is in contact with the top surface of drawing board (2).

2. A drawing board for road design according to claim 1, characterized in that: The flat mechanism further includes first spring (12), the first spring (12) is sleeved on the first pull rod (8), the top end of the first spring (12) is fixedly connected with the sliding frame (7), and the bottom end of the first spring (12) is fixedly connected with the presser plate (9).

3. A drawing board for road design according to claim 2, characterized in that: The top end of the first pull rod (8) is fixedly provided with a handle (13) for pulling the first pull rod (8).

4. The drawing board for road design according to claim 1, wherein: The inside of the storage box (1) is fixedly provided with a first connecting lug plate (14), and the side wall of the drawing board (2) is fixedly provided with a connecting block (15), which is hinged to the first connecting lug plate (14).

5. The drawing board for road design according to claim 1, wherein: The angle adjusting mechanism includes a second sliding block (16), a second connecting lug plate (17), a support plate (18) and a third connecting lug plate (19), the inside of the storage box (1) is provided with a second sliding groove (20), the second sliding block (16) is inserted into the second sliding groove (20) and slides horizontally along the second sliding groove (20), the second connecting lug plate (17) is fixedly arranged on the top end of the second sliding block (16), one end of the support plate (18) is hinged to the second connecting lug plate (17), the third connecting lug plate (19) is fixedly arranged on the bottom surface of the drawing board (2), and the other end of the support plate (18) is hinged to the third connecting lug plate (19).

6. A drawing board for road design according to claim 5, characterized in that: The angle adjusting mechanism further comprises a second threaded rod (21), guide rods (22), a second rotating handle (23) and a positioning assembly, the second threaded rod (21) is inserted into the second sliding groove (20) and is rotationally connected with the storage box (1), the two guide rods (22) are fixedly arranged on the two sides of the second sliding groove (20), the second sliding block (16) is sleeved on the second threaded rod (21) and the guide rods (22) and slides along the second threaded rod (21) in the second sliding groove (20), one end of the second threaded rod (21) penetrates through the storage box (1) and is fixedly connected with the second rotating handle (23), and the positioning assembly is arranged between the second rotating handle (23) and the storage box (1).

7. A drawing board for road design according to claim 6, characterized in that: The positioning assembly comprises a second pull rod (24), a baffle (25) and an insertion block (26), the second pull rod (24) penetrates through the second rotating handle (23) and slides horizontally along the second rotating handle (23), the baffle (25) is fixedly arranged at one end of the second pull rod (24) away from the second rotating handle (23), and one end of the insertion block (26) is fixedly connected with the side wall of the baffle (25), and the other end of the insertion block (26) is inserted into the side wall of the storage box (1).

8. A drawing board for road design according to claim 7, characterized in that: The positioning assembly further comprises a second spring (27), the second spring (27) is sleeved on the second pull rod (24), one end of the second spring (27) is fixedly connected with the side wall of the second rotating handle (23), and the other end of the second spring (27) is fixedly connected with the side wall of the baffle (25).

9. The drawing board for road design according to claim 1, wherein: A box cover (28) for closing the inside of the storage box (1) is inserted into the top end of the storage box (1), and the box cover (28) slides horizontally along the storage box (1).

10. A drawing board for road design according to claim 9, characterized in that: A handle (29) for carrying device is fixedly arranged on the side wall of the storage box (1).

Citation Information

Patent Citations

  • Drawing board for urban road design

    CN221292734U