Urban road planning line drawing equipment

Abstract

The invention relates to a drawing article, and discloses urban road planning line drawing equipment which comprises a drawing board, a movable adjusting board and a proportion drawing mechanism. The proportion drawing mechanism comprises a shell, an output assembly and a drawing assembly, the shell is in sliding joint with a second sliding groove extending in the vertical direction through a joint part on the rear side face of the shell, and the joint part can rotate relative to the movable adjusting plate; the movable adjusting plate can slide relative to the drawing board along the first sliding groove extending transversely, so that the shell can slide and rotate relative to the drawing board. And through at least two outer teeth with different perimeters in the output assembly, the ratio of the moving distance of the main scribing rod correspondingly meshed with the outer teeth is the same as the perimeter ratio, so that the perimeter ratio can be set according to the multiple needing to be scaled, the required scaled line length is directly output, the situation that drawing is conducted after value calculation is avoided, and the working efficiency is improved. Errors caused by value calculation are avoided, and the overall drawing accuracy is improved.

Description

Technical Field

[0001] The invention relates to a drawing product, in particular to a line drawing device for urban road planning. Background Art

[0002] Road planning, survey and mapping is a vital part of the road design and planning process. It involves collecting key information such as topography, soil geology, and traffic flow, and drawing corresponding maps and graphics to analyze and plan road directions, layouts, and design parameters. The accuracy and thoroughness of this process have a significant impact on the success of road construction. Road planning, survey and mapping is usually completed by a professional surveying and mapping team, using advanced surveying equipment and tools for data collection and processing. The geographical environment and physical characteristics of the road are collected through topographic surveys, geological surveys, and other means.

[0003] When conducting road planning surveys and mapping, since the actual roads or terrains are usually larger and the drawings are smaller, in order to draw the complete road or terrain into one drawing, it is often necessary to reduce the road or terrain according to a certain ratio and then draw it on the drawing according to the reduced size.

[0004] When drawing in proportion, calculations are generally performed based on the actual size of the road or terrain and the required scaling ratio to obtain the drawing size, and then the drawing is performed on the drawing according to the drawing size. However, when encountering scaling ratios such as 3:1 and 7:1, the actual size is 3 or 7 times the drawing size. Due to the limitations on the accuracy of drawing measuring tools, the drawing size obtained by calculation usually needs to be rounded off. The rounded value will have a certain error value, which will affect the accuracy of the drawing. Summary of the invention

[0005] The purpose of the present invention is to provide a device for drawing lines in urban road planning, so as to solve the problem of low drawing accuracy caused by errors in drawing size calculation and rounding in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides a city road planning line drawing device, which includes a drawing board, a movable adjustment board and a proportional drawing mechanism;

[0007] The drawing board has a horizontal direction and a vertical direction; a first slide groove is provided on the front side of the drawing board, and the first slide groove extends in the horizontal direction; the movable adjustment plate is provided on the front side of the drawing board, and a guide portion is provided on the movable adjustment plate, and the guide portion is slidably engaged in the first slide groove, so that the movable adjustment plate can slide along the first slide groove relative to the drawing board;

[0008] A second slide groove is provided on the front side of the movable adjustment plate, and the second slide groove extends in a vertical direction, wherein the vertical direction is perpendicular to the horizontal direction;

[0009] The scale drawing mechanism includes a housing, an output assembly and a drawing assembly;

[0010] The rear side surface of the housing has a coupling portion, the coupling portion is slidably engaged in the second slide groove, and the coupling portion can rotate relative to the movable adjustment plate;

[0011] The housing is provided with a mounting cavity, the output assembly is disposed in the mounting cavity and is rotatably connected to the housing, the output assembly comprises at least two external teeth with different circumferences and coaxially arranged, the drawing assembly comprises at least two main marking rods corresponding to the external teeth one by one, the main marking rods are slidably arranged in the housing, and the main marking rods have rack portions meshing with the external teeth, and the main marking rods extend transversely;

[0012] The same end of the main marking rod along the transverse direction is respectively provided with a placement portion for placing a paintbrush.

[0013] Further, the output assembly includes a main external tooth and a plurality of auxiliary external teeth;

[0014] The circumference of any pair of external teeth is defined as N, and the circumference of the main external teeth is defined as M; wherein M is an integer multiple of N.

[0015] Furthermore, the scale drawing mechanism further comprises an auxiliary component; the auxiliary component comprises an auxiliary marking rod and a connecting rod;

[0016] The shell is provided with movable grooves on two side surfaces opposite to each other in the transverse direction, the movable grooves are arranged to extend along the vertical direction and are located on one side of each main marking rod, the auxiliary marking rods extend in the transverse direction, the auxiliary marking rods are respectively slidably arranged in each movable groove, and the connection position between the auxiliary marking rods and the shell can be adjusted along the movable grooves;

[0017] The auxiliary marking rod can be detachably connected to any one of the main marking rods through the connecting rod, and the auxiliary marking rod is provided with a clamping portion for placing a paintbrush at one end close to the drawing board.

[0018] Furthermore, the auxiliary component further comprises a limit block, which is connected to a side surface of the housing along the transverse direction and is relatively arranged above the moving groove;

[0019] The rear side surface of the limit block is provided with a plurality of grooves spaced in sequence along the vertical direction, and the front side surface of the auxiliary marking rod is provided with a plurality of protrusions adapted to the grooves, and the protrusions extend in the transverse direction;

[0020] The limit block can move in the front-rear direction, and is used to limit the vertical movement of the auxiliary marking rod relative to the housing through the connection between the groove and the protrusion.

[0021] Furthermore, a scale is provided on the side of the housing on which the limit block is provided, and the scale extends vertically.

[0022] Furthermore, a return spring is sleeved on the outside of the combining portion, and the return spring is connected to the outer shell and the movable adjustment plate.

[0023] Furthermore, at least one of the main marking rods has two ends passing through the housing respectively, and one of the main marking rods having two ends passing through the housing is defined as a standard marking rod;

[0024] Length scales are arranged along the length direction of the standard marking rod.

[0025] Furthermore, the drawing board includes a board body and a fixed adjustment board, and the fixed adjustment board is connected to the front side of the board body at intervals;

[0026] The first slide groove is opened on the fixed adjustment plate, the movable adjustment plate is located between the plate body and the fixed adjustment plate, one end of the movable adjustment plate is provided with the guide part, the guide part slides from back to front and passes through the first slide groove, a locking piece is screwed on the guide part, and the locking piece is located on the front side of the fixed adjustment plate.

[0027] Furthermore, a fixing clamp is movably provided on the front side of the drawing board, and the fixing clamp is provided on one side of the drawing board along the lateral direction; and / or

[0028] A limiting plate is also provided on the front side of the drawing board, and the limiting plate is located on the side of the drawing board opposite to the first sliding groove.

[0029] Further, it also includes a fixing component;

[0030] The fixing assembly comprises a base and a bracket; the bracket is fixedly connected to the base, and a fixing block is provided on the top of the bracket;

[0031] A fixing groove matched with the fixing block is provided on the rear side of the drawing board, and the bracket is detachably connected to the fixing groove through the fixing block.

[0032] Compared with the prior art, the urban road planning line drawing device provided by the present invention has the following beneficial effects:

[0033] The present invention provides a kind of urban road planning line drawing equipment, which includes a drawing board, a movable adjustment board and a proportional drawing mechanism; the proportional drawing mechanism includes a shell, an output component and a drawing component, the shell is slidably engaged with a second slide groove extending vertically through a joint on its rear side, and the joint can rotate relative to the movable adjustment board; and the movable adjustment board can slide relative to the drawing board along the first slide groove extending horizontally, so that the shell can slide and rotate relative to the drawing board, and then the main line drawing rod slidably penetrated in the shell can slide and rotate relative to the drawing board. And through at least two external teeth with different circumferences in the output component, the ratio of the moving distance of the main line drawing rod meshing with the external teeth is the same as the circumference ratio, so that the circumference ratio can be set according to the multiple required to be scaled, and then the required scaled line length can be directly output, avoiding the need to draw after calculating the value, avoiding the error caused by the calculated value, and improving the overall accuracy of the drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of an urban road planning line drawing device from one angle according to an embodiment of the present invention;

[0035] Figure 2 It is a schematic assembly diagram of one angle of a proportional drawing mechanism in a city road planning line drawing device according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic assembly diagram of another angle of a proportional drawing mechanism in a city road planning line drawing device according to an embodiment of the present invention;

[0037] Figure 4 yes Figure 1 A magnified schematic diagram of the middle A area;

[0038] Figure 5 It is a structural schematic diagram of one angle of an urban road planning and line drawing device according to an embodiment of the present invention when the device does not include a fixed component;

[0039] Figure 6 It is a structural schematic diagram from another angle of an urban road planning and line drawing device according to an embodiment of the present invention.

[0040] In the figure, 100, urban road planning line drawing equipment; 1, drawing board; 10, fixed groove; 11, plate body; 12, fixed adjustment plate; 120, first slide groove; 2, movable adjustment plate; 20, second slide groove; 21, guide part; 22, locking member; 23, rubber strip; 231, card slot; 3, proportional drawing mechanism; 31, housing; 310, installation cavity; 311, joint; 3111, tightening member; 3112, reset spring; 312, movable Slot; 313, scale; 32, output assembly; 320, external teeth; 33, drawing assembly; 330, main marking rod; 3301, rack portion; 3302, placement hole; 34, auxiliary assembly; 341, auxiliary marking rod; 342, connecting rod; 343, limit block; 344, expansion block; 4, fixing clip; 5, limit plate; 6, fixing assembly; 61, base; 62, bracket; 621, fixing block; 7, support armrest; 8, pointing mark. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0042] like Figure 1 to Figure 6 As shown, an urban road planning line drawing device 100 according to an embodiment of the present invention comprises a drawing board 1, an active adjustment board 2 and a proportional drawing mechanism 3; the drawing board 1 has a horizontal direction X and a vertical direction Y; the front side of the drawing board 1 is provided with a first slide groove 120, the first slide groove 120 extends along the horizontal direction X, the active adjustment board 2 is provided on the front side of the drawing board 1, and the active adjustment board 2 has a guide portion 21, the guide portion 21 is slidably engaged in the first slide groove, so that the active adjustment board 2 can slide relative to the drawing board 1 along the first slide groove; the front side of the active adjustment board 2 is provided with a second slide groove 20, the second slide groove 20 extends along the vertical direction Y, and the vertical direction Y is perpendicular to the horizontal direction X; the proportional drawing mechanism 3 comprises a shell 31, an output component 32 and a drawing component 33; the shell 31 The rear side surface of the housing 31 has a coupling portion 311, which is slidably engaged in the second slide groove 20 and can rotate relative to the movable adjustment plate 2; a mounting cavity 310 is provided in the housing 31, and the output component 32 is arranged in the mounting cavity 310 and is rotatably connected to the housing 31, the output component 32 includes at least two outer teeth 320 with different circumferences and coaxially arranged, the drawing component 33 includes at least two main marking rods 330 corresponding to each of the outer teeth 320, the main marking rod 330 is slidably penetrated in the housing 31, and the main marking rod 330 has a rack portion 3301 meshing with the outer teeth 320, and the main marking rod 330 extends in the transverse direction X; the same end of the main marking rod 330 along the transverse direction X is respectively provided with a placement portion for placing a brush.

[0043] Based on the above technical solution, the movable adjustment plate 2 can slide along the first sliding groove 120 relative to the drawing board 1, and the shell 31 is slidably engaged in the second sliding groove 20 through the engaging portion on its rear side, and the engaging portion can rotate relative to the movable adjustment plate 2, so that the shell 31 can both slide and rotate relative to the movable adjustment plate 2, thereby; the shell 31 can both slide and rotate relative to the drawing board 1; thereby, the main marking rod slidably inserted in the shell can both slide and rotate relative to the drawing board 1. By means of at least two outer teeth 320 having different circumferences and being coaxially arranged, and main marking rods 330 correspondingly meshing with the outer teeth 320, when any one of the main marking rods 330 moves a certain distance, the other main marking rod 330 will be driven to move, and the ratio of the moving distance of the moving main marking rod 330 to the moving distance of the driven main marking rod 330 is the ratio of the circumference of the corresponding meshing outer teeth 320; by setting the reduction factor to the ratio of the circumference of the outer teeth 320 corresponding to the moving main marking rod 330 to the circumference of the outer teeth 320 corresponding to the driven main marking rod 330, the main marking rod 330 can be moved a distance corresponding to the original size, and the driven main marking rod 330 can be moved a distance after the corresponding reduction factor, thereby outputting the line length reduced by the corresponding factor; thus, the required drawing size can be directly output according to the original size, thereby avoiding the error problem caused by rounding off and then drawing, thereby improving the accuracy of drawing.

[0044] Preferably, if Figure 2 As shown, in order to facilitate the placement and replacement of the paintbrush, the placement portion is a placement hole 3302 opened at the end of the main marking rod 330, and the end of the main marking rod 330 with the placement hole 3302 is also screwed with a locking piece, and the locking piece is used to lock and fix the paintbrush in the placement hole.

[0045] Furthermore, if Figure 2 As shown, since the scale is usually reduced by an integer multiple when drawing in proportion, in order to make the urban road planning line drawing device suitable for conventional line drawing scenarios; the output component 32 includes a main outer tooth and a plurality of auxiliary outer teeth; the circumference of any auxiliary outer tooth is defined as N, and the circumference of the main outer tooth is defined as M; wherein M is an integer multiple of N.

[0046] Preferably, in this embodiment, the output component includes a main outer tooth and two auxiliary outer teeth, wherein the circumference of the main outer tooth is three times the circumference of one pair of outer teeth and seven times the circumference of the other pair of outer teeth, so that the driven main marking rod can output line lengths of 1 / 3 and 1 / 7, thereby meeting the needs of common proportional scaling drawings that are prone to errors due to calculated values.

[0047] Furthermore, if Figure 2 and Figure 3 As shown, when drawing, there is usually a need to draw parallel line segments. To meet this drawing need, the proportional drawing mechanism 3 also includes an auxiliary component 34; the auxiliary component 34 includes an auxiliary marking rod 341 and a connecting rod 342; the housing 31 is provided with movable grooves 312 on the two opposite side surfaces in the horizontal direction X, the movable grooves 312 are extended along the vertical direction Y, and are located on one side of each main marking rod, the auxiliary marking rod 341 extends along the horizontal direction X, the auxiliary marking rod 341 is slidably penetrated in each of the movable grooves 312, and the connection position between the auxiliary marking rod 341 and the housing 31 can be adjusted along the movable groove 312; the auxiliary marking rod 341 can be detachably connected to any of the main marking rods through the connecting rod 342, and the auxiliary marking rod 341 is provided with a clamping portion 3410 for placing a brush at one end close to the drawing board 1. When in use, the auxiliary marking rod 341 is connected to the main marking rod corresponding to any required drawing ratio through the connecting rod 342, and parallel lines are drawn accordingly; and the connection position between the auxiliary marking rod 341 and the outer shell 31 can be adjusted along the movable groove 312, so that the spacing between the parallel lines is adjustable, further improving the applicability of the urban road planning marking equipment.

[0048] Furthermore, if Figure 2 and Figure 3 As shown, since the auxiliary marking rod 341 slides through each of the movable grooves 312, it may rotate or move unnecessarily during operation. In order to ensure its parallelism with the main marking rod, the auxiliary component 34 also includes a limit block 343, and the limit block 343 is connected to a side surface of the shell 31 along the horizontal direction X, and is relatively arranged above the movable groove 312; the rear side surface of the limit block 343 is provided with a plurality of grooves spaced in sequence along the vertical direction Y, and the front side surface of the auxiliary marking rod 341 is provided with a plurality of protrusions adapted to the grooves, and the protrusions extend along the horizontal direction X; the limit block 343 can move in the front and rear directions, and is used to limit the vertical movement of the auxiliary marking rod 341 relative to the shell through the connection between the groove and the protrusion.

[0049] Preferably, if Figure 2 and Figure 3As shown, since the outer teeth 320 are coaxially arranged, the main marking rods 330 that mesh with each outer tooth 320 one by one will have a distance difference in the front-to-back direction; and the auxiliary marking rod 341 can be detachably connected to any of the main marking rods through the connecting rod 342, so that the connecting rod 342 is parallel to the front side or the rear side of the shell 31 when connected to achieve better force output; the auxiliary component 34 also includes an expansion block 344, and the expansion block 344 is connected to the front side and / or the rear side of the auxiliary marking rod 341, so that when the auxiliary marking rod 341 can be detachably connected to any of the main marking rods through the connecting rod 342, the connecting rod 342 is connected to the auxiliary marking rod 341 or the expansion block 344 as needed, so that the connecting rod 342 is parallel to the front side or the rear side of the shell 31.

[0050] Furthermore, if Figure 2 and Figure 3 As shown, a scale 313 is provided on the side of the limit block on the shell 31, and the scale 313 extends along the vertical direction Y. Through the scale 313, the specific position of the auxiliary marking rod 341 in the movable groove 312 can be measured, so as to obtain the spacing of parallel lines, which is convenient for users to draw parallel lines.

[0051] Furthermore, if Figure 2 and Figure 3 As shown, at least one of the main marking rods 330 has two ends passing through the housing 31, and one of the main marking rods 330 having both ends passing through the housing is defined as a standard marking rod; a length scale is provided along the length direction of the standard marking rod. In this embodiment, the standard marking rod is meshed with the main outer teeth so that the moving distance of the standard marking rod can be directly read according to the length scale, so that the main marking rod 330 meshed with the auxiliary outer teeth outputs the moving distance reduced by an integer multiple, thereby sliding out a line reduced by a desired multiple.

[0052] Furthermore, if Figure 1 , Figure 4 and Figure 6As shown, the drawing board 1 includes a board body 11 and a fixed adjustment plate 12, and the fixed adjustment plate 12 is connected to the front side of the board body 11 at intervals; the first sliding groove 120 is opened on the fixed adjusting plate 12, and the movable adjusting plate 2 is located between the board body 11 and the fixed adjusting plate 12, and one end of the movable adjusting plate 2 is provided with the guide part 21, and the guide part 21 is slidably passed through the first sliding groove 120 from back to front, and a locking member 22 is screwed on the guide part 21, and the locking member 22 is located on the front side of the fixed adjusting plate 12, through the threaded connection between the locking member 22 and the guide part 21, when the locking member 22 is tightened backward, the movable adjusting plate 2 will be fixed to the first sliding groove 120, avoiding sliding relative to the drawing board 1 along the first sliding groove 120, thereby ensuring smooth and accurate drawing.

[0053] Preferably, if Figure 1 and Figure 4 As shown, in order to prevent the housing 31 from sliding along the second slide groove 20 relative to the drawing board 1 during drawing, a rubber strip 23 is fixed in the second slide groove 20, and a slot 231 extending vertically is opened in the rubber strip 23, and the joint 311 includes a tightening member 3111; the tightening member 3111 is coaxially arranged with each external tooth and passes through the front and rear sides of the housing. By tightening the tightening member 3111 backward and clamping it in the slot 231, the housing 31 can be fixedly engaged in the second slide groove 20.

[0054] Preferably, if Figure 3 As shown, the coupling portion 311 further includes a return spring 3112, which is fixed to the rear side of the housing 31 and arranged on the outer periphery of the tightening member 3111. When the tightening member 3111 is tightened backward and engaged in the clamping groove 231, the bottom end of the return spring 3112 is engaged in the second sliding groove 20, so that the housing 31 can be automatically reset by the return spring 3112 after rotation.

[0055] Furthermore, if Figure 1 As shown, a fixing clamp 4 is movably provided on the front side of the drawing board 1, and the fixing clamp 4 is provided on one side of the drawing board 1 along the horizontal direction X; a limiting plate 5 is also provided on the front side of the drawing board 1, and the limiting plate 5 is located on the side of the drawing board 1 opposite to the first slide groove 120. The fixing clamp 4 can clamp the drawing paper on the drawing board 1 to prevent the drawing paper from moving during drawing; the limiting plate 5 can prevent the object on the drawing board 1 from sliding off from the side opposite to the first slide groove 120 when the drawing board 1 is tilted or moved.

[0056] Furthermore, if Figure 1 and Figure 6As shown, in order to improve the applicability of the urban road planning and drawing device 100 so that it can meet the needs of drawing work in different scenes; the urban road planning and drawing device 100 also includes a fixing component 6; the fixing component 6 includes a base 61 and a bracket 62; the bracket 62 is fixedly connected to the base 61, and a fixing block 621 is provided on the top of the bracket 62; the rear side of the drawing board 1 is provided with a fixing groove 10 adapted to the fixing block 621, and the bracket 62 is detachably connected to the fixing groove 10 through the fixing block 621. So that the drawing board 1 can be erected on the ground or other lower objects through the fixing component 6 for drawing, and can also be removed from the fixing component 6 and placed on a higher object such as a table for drawing.

[0057] Preferably, if Figure 5 As shown, a support armrest 7 is also fixedly provided on the back of the drawing board 1, and the user can support and grasp the drawing board 1 through the support armrest 7 on the back to meet temporary drawing needs.

[0058] Preferably, if Figure 1 As shown, in order to facilitate the clear direction of the housing 31 after rotation when drawing, a direction mark 8 is fixed on the housing 31, and the direction mark 8 is parallel to the horizontal direction X.

[0059] The working process of the present invention is as follows: according to different usage scenarios, different fixing methods of the drawing board 1 are selected, including: placing the drawing board 1 horizontally on an object such as a desktop that is easy to draw, holding the support armrest 7 to temporarily support and grasp the drawing board 1, and detachably connecting and fixing the drawing board 1 to the bracket 62 through the fixing slot 10;

[0060] Clamp one side of the drawing paper on the fixing clamp 4 and lay the drawing paper flat; install several brushes in the placement holes 3302 of the main marking rods 330 according to actual needs. Tighten the locking member 22 to fix the movable adjustment plate 2 to the first slide slot 120; tighten the tightening member 3111 backward to clamp it into the clamping slot 231 to fix the housing 31 in the second slide slot 20; then according to actual drawing needs, cooperate with the external protractor to rotate the housing 31 to reach the corresponding angle; move the main marking rod 330 according to the actual size to output the required line length.

[0061] When it is necessary to draw parallel line segments, the auxiliary marking rod 341 is connected to the required main marking rod 330 through the connecting rod 342 according to the required output line length, and the auxiliary marking rod 341 is moved in the moving groove 312 to achieve the required parallel line spacing; the main marking rod 330 is moved so that the auxiliary marking rod 341 outputs parallel lines.

[0062] In summary, an embodiment of the present invention provides an urban road planning and drawing device 100, which includes a drawing board 1, a movable adjustment plate 2 and a proportional drawing mechanism 3; the proportional drawing mechanism 3 includes a shell 31, an output component 32 and a drawing component 33, and the shell 31 is slidably engaged with a second slide groove 20 extending vertically through a joint 311 on its rear side, and the joint 311 can rotate relative to the movable adjustment plate 2; and the movable adjustment plate 2 can slide relative to the drawing board 1 along the first slide groove 120 extending laterally, so that the shell 31 can slide and rotate relative to the drawing board 1, and then the main marking rod 330 slidably penetrated by the shell 31 can slide and rotate relative to the drawing board 1. By using at least two external teeth 320 with different circumferences in the output component 32, the ratio of the moving distances of the main marking rod 330 meshing with the external teeth 320 is made to be the same as the circumference ratio, so that the circumference ratio can be set according to the required scaling multiple, and then the required scaled line length can be directly output, eliminating the need to calculate the value before drawing, avoiding errors caused by calculated values, and improving the overall accuracy of drawing.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A device for drawing lines in urban road planning, characterized in that: It includes a drawing board, a movable adjustment board and a proportional drawing mechanism; The drawing board has a horizontal direction and a vertical direction; a first slide groove is provided on the front side of the drawing board, and the first slide groove extends in the horizontal direction; the movable adjustment plate is provided on the front side of the drawing board, and a guide portion is provided on the movable adjustment plate, and the guide portion is slidably engaged in the first slide groove, so that the movable adjustment plate can slide along the first slide groove relative to the drawing board; A second slide groove is provided on the front side of the movable adjustment plate, and the second slide groove extends in a vertical direction, wherein the vertical direction is perpendicular to the horizontal direction; The scale drawing mechanism includes a housing, an output assembly and a drawing assembly; The rear side surface of the housing has a coupling portion, the coupling portion is slidably engaged in the second slide groove, and the coupling portion can rotate relative to the movable adjustment plate; The housing is provided with a mounting cavity, the output assembly is disposed in the mounting cavity and is rotatably connected to the housing, the output assembly comprises at least two external teeth with different circumferences and coaxially arranged, the drawing assembly comprises at least two main marking rods corresponding to the external teeth one by one, the main marking rods are slidably arranged in the housing, and the main marking rods have rack portions meshing with the external teeth, and the main marking rods extend transversely; The same end of the main marking rod along the transverse direction is respectively provided with a placement portion for placing a paintbrush.

2. The urban road planning and marking device according to claim 1, characterized in that: The output assembly includes a main external tooth and a plurality of auxiliary external teeth; The circumference of any pair of external teeth is defined as N, and the circumference of the main external teeth is defined as M; wherein M is an integer multiple of N.

3. The urban road planning and marking device according to claim 1, characterized in that: The scale drawing mechanism further comprises an auxiliary component; the auxiliary component comprises an auxiliary marking rod and a connecting rod; The shell is provided with movable grooves on two side surfaces opposite to each other in the transverse direction, the movable grooves are arranged to extend along the vertical direction and are located on one side of each main marking rod, the auxiliary marking rods extend in the transverse direction, the auxiliary marking rods are respectively slidably arranged in each movable groove, and the connection position between the auxiliary marking rods and the shell can be adjusted along the movable grooves; The auxiliary marking rod can be detachably connected to any one of the main marking rods through the connecting rod, and the auxiliary marking rod is provided with a clamping portion for placing a paintbrush at one end close to the drawing board.

4. The urban road planning and marking device according to claim 3, characterized in that: The auxiliary component further includes a limit block, which is connected to a side surface of the housing along the transverse direction and is relatively arranged above the moving groove; The rear side surface of the limit block is provided with a plurality of grooves spaced in sequence along the vertical direction, and the front side surface of the auxiliary marking rod is provided with a plurality of protrusions adapted to the grooves, and the protrusions extend in the transverse direction; The limit block can move in the front-rear direction, and is used to limit the vertical movement of the auxiliary marking rod relative to the housing through the connection between the groove and the protrusion.

5. The urban road planning and marking device according to claim 4, characterized in that: A scale is provided on the side of the housing where the limit block is provided, and the scale extends vertically.

6. The urban road planning and marking device according to claim 1, characterized in that: A return spring is sleeved on the outside of the combining portion, and the return spring is connected to the housing and the movable adjusting plate.

7. The urban road planning and marking device according to claim 1, characterized in that: Two ends of at least one of the main marking rods pass through the housing respectively, and one of the main marking rods having both ends passing through the housing is defined as a standard marking rod; Length scales are arranged along the length direction of the standard marking rod.

8. The urban road planning line drawing device according to any one of claims 1 to 7, characterized in that: The drawing board includes a board body and a fixed adjustment board, wherein the fixed adjustment board is connected to the front side of the board body at intervals; The first slide groove is opened on the fixed adjustment plate, the movable adjustment plate is located between the plate body and the fixed adjustment plate, one end of the movable adjustment plate is provided with the guide part, the guide part slides from back to front and passes through the first slide groove, a locking piece is screwed on the guide part, and the locking piece is located on the front side of the fixed adjustment plate.

9. The urban road planning and marking device according to claim 1, characterized in that: A fixing clamp is movably provided on the front side of the drawing board, and the fixing clamp is provided on one side of the drawing board along the lateral direction; and / or A limiting plate is also provided on the front side of the drawing board, and the limiting plate is located on the side of the drawing board opposite to the first sliding groove.

10. The urban road planning and marking device according to claim 1, characterized in that: Also included are fixing components; The fixing assembly comprises a base and a bracket; the bracket is fixedly connected to the base, and a fixing block is provided on the top of the bracket; A fixing groove matched with the fixing block is provided on the rear side of the drawing board, and the bracket is detachably connected to the fixing groove through the fixing block.

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