CN113701612A

CN113701612A - Flatness calibration device for surveying and mapping engineering

Info

Publication number: CN113701612A
Application number: CN202111068533.XA
Authority: CN
Inventors: 贺园园
Original assignee: Xian Traffic Engineering Institute
Current assignee: Xian Traffic Engineering Institute
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-11-26

Abstract

The invention discloses a flatness calibration device for surveying and mapping engineering, which comprises a concave mounting table, four universal wheels with a self-locking function, a sliding seat, a linear displacement mechanism, a drawing board, two elastic telescopic rods and a drawing mechanism. The two first rollers are driven by the elastic telescopic rod to horizontally move on the road surface, the two first rollers can drive the animation line mechanism to draw lines on two sides of the drawing board while moving, the drawing board is transparent, so that lines drawn on two sides of the drawing board can be compared, when the two lines are horizontally overlapped, the road is smooth, when the two lines are not overlapped, the road is not smooth, meanwhile, the fluctuation state of the lines can reflect the fluctuation state of the road surface, and the distance between the two misaligned lines can clearly reflect the height difference between the roads respectively corresponding to the two first rollers.

Description

Flatness calibration device for surveying and mapping engineering

Technical Field

The invention relates to the technical field of surveying and mapping engineering, in particular to a flatness calibration device for surveying and mapping engineering.

Background

The surveying and mapping project takes the shape, size and gravity field of the earth and other planets as research objects, and the research and mapping objects are very wide, and mainly comprise various ground features, landforms, underground geological structures, hydrology, mineral deposits and the like of the earth surface, such as mountains, rivers, houses, roads, vegetation and the like.

The road surface roughness refers to the road surface vertical deviation for ideal plane, and the roughness on road surface not only can influence vehicle passenger's comfort level, also can influence the safety that the vehicle travel to a certain extent, so need regularly detect the road surface roughness to guarantee the quality on road surface and the safety that the vehicle traveled. The existing flatness detection of roads mostly adopts tools such as a manual dependence level bar to measure, the operation of the measuring process is troublesome, the measuring error is large, and when the measuring is carried out on a long road surface, the physical strength is wasted, and the fluctuation condition of the road surface cannot be clearly displayed.

Disclosure of Invention

The present invention is directed to a flatness calibration device for mapping engineering, which solves the above-mentioned problems of the prior art.

The technical scheme of the invention is as follows: a flatness calibration device for surveying and mapping engineering comprises a concave mounting table, four universal wheels with self-locking function, a sliding seat, a linear displacement mechanism, a drawing board, two elastic telescopic rods and a drawing mechanism; four universal wheels with self-locking function are respectively fixed at four corners of the bottom of the mounting table; the sliding seat is horizontally arranged below the mounting table; the linear displacement mechanism is arranged on the mounting table, and the output end of the linear displacement mechanism is connected with the top plate of the sliding seat and is used for driving the sliding seat to move horizontally; the drawing board is vertically erected between the two side walls of the mounting table and is made of transparent materials; the two elastic telescopic rods are arranged on one side of the drawing board in parallel, the tops of the two elastic telescopic rods are fixed with the bottom of the sliding seat, and the bottoms of the two elastic telescopic rods are provided with first rollers; the drawing mechanism is arranged below the sliding seat and connected with the two elastic telescopic rods and used for drawing lines on two sides of the drawing board when the two elastic telescopic rods move.

Preferably, the elastic telescopic rod comprises a first rod body, a second rod body and a first spring; the upper end of the first rod body is fixed with the bottom of the sliding seat, and the lower end of the first rod body is provided with a first sliding chute which is vertically arranged; the upper end of the second rod body is clamped in the first sliding groove and can move up and down in the first sliding groove, and the first roller is arranged at the lower end of the second rod body; the first spring is vertically arranged in the first sliding groove, and two ends of the first spring are fixed to the inner top surface of the first sliding groove and the top of the second rod body respectively.

Preferably, the line drawing mechanism comprises a U-shaped connecting frame, a first line drawing assembly and a second line drawing assembly; the opening end of the U-shaped connecting frame is vertically arranged downwards and is opposite to the top of the drawing board, the top of the U-shaped connecting frame is fixed with the bottom of the sliding seat through a first connecting rod, and first mounting grooves are formed in the bottoms of the two side walls of the opening end of the U-shaped connecting frame; the first line drawing assembly and the second line drawing assembly are respectively arranged on two sides of the drawing board, and the first line drawing assembly comprises two second connecting rods, a squeezing block and a transmission mechanism; the two second connecting rods are arranged in one first mounting groove and are arranged in an X-shaped crossed manner, the middle parts of the two second connecting rods are hinged with each other through a hinge shaft fixed in the first mounting groove, a painting brush is detachably connected to the side wall of one end, away from the elastic telescopic rod, of one second connecting rod, and the ends, away from the elastic telescopic rod, of the two second connecting rods are connected with each other through a second spring; the extrusion block is arranged between one ends of the two second connecting rods, which are close to the elastic telescopic rod, and the extrusion block is in an isosceles trapezoid shape; the transmission mechanism is arranged at the bottom of the sliding seat, the input end of the transmission mechanism is connected with the side wall of one of the second rod bodies, and the output end of the transmission mechanism is connected with one end of the extrusion block, which is far away from the two second connecting rods, and is used for driving the extrusion block to horizontally move when the second rod bodies vertically move; the structure of the second line drawing assembly is the same as that of the first line drawing assembly, and the input end of the transmission mechanism in the second line drawing assembly is connected with the side wall of another second rod body.

Preferably, the transmission mechanism in the first line drawing assembly comprises a connecting block, an L-shaped supporting rod, a rotating shaft, a sleeve and a fourth connecting rod; the connecting block is horizontally arranged, the top of the connecting block is fixed with the bottom of the sliding seat through a third connecting rod, a second mounting groove is formed in the side wall, right opposite to the first rod body, of the connecting block, a second sliding groove is formed in the upper inner wall and the lower inner wall of the second mounting groove, a sliding rod is connected in the second sliding groove in a sliding mode, two ends of the sliding rod extend out of the second sliding groove, one end of the sliding rod is fixed with the side wall, far away from the second connecting rod, of the extrusion block, and a rack is fixed on the side wall, right opposite to the first rod body, of the sliding rod; the L-shaped supporting rod is arranged on one side of the connecting block, which is provided with a second mounting groove, and the vertical end of the L-shaped supporting rod is fixed with the bottom of the sliding seat; the rotating shaft is vertically arranged, the upper end of the rotating shaft is rotatably connected with the bottom of the sliding seat, the lower end of the rotating shaft is rotatably connected with the horizontal end of the L-shaped supporting rod, a gear is fixedly sleeved on the rotating shaft and meshed with the rack, and a first external thread is arranged on a shaft section of the rotating shaft below the drawing board; the sleeve is sleeved on the shaft section of the rotating shaft with the threads, and the inner wall of the sleeve is provided with first internal threads matched with the first external threads; one end of the fourth connecting rod is fixed with the side wall of the sleeve, and the other end of the fourth connecting rod is fixed with the side wall of the second rod body in one of the elastic telescopic rods; drive mechanism in the second setting-out subassembly with drive mechanism's in the first setting-out subassembly structure is the same, telescopic lateral wall in the second setting-out subassembly is fixed through the fourth connecting rod with the lateral wall of the second body of rod in another elastic telescopic rod.

Preferably, a threaded hole is formed in the side wall of the second connecting rod, and a second external thread matched with the threaded hole is formed in the outer side wall of the painting brush.

Preferably, one end of each second connecting rod, which is close to the extrusion block, is provided with a third mounting groove, and a second roller is arranged in each third mounting groove and is in contact with the extrusion block.

Preferably, the linear displacement mechanism includes a first connecting plate and a second connecting plate; the first connecting plate is horizontally arranged at the top of the mounting table, and a handle is arranged at the top of the first connecting plate; the second connecting plate is vertically clamped in the slot opening and can move in the slot opening, the slot opening is formed in the top of the mounting table and is arranged along the length direction of the mounting table, the top of the second connecting plate extends out of the slot opening and is fixed with the bottom of the first connecting plate, and the bottom of the second connecting plate extends out of the slot opening and is fixed with the top of the sliding seat.

Preferably, a sliding column is erected between the two side walls of the mounting table in parallel, and the sliding seat is sleeved on the two sliding columns and is in sliding connection with the two sliding columns.

Compared with the prior art, the invention has the beneficial effects that:

1. when the road surface is subjected to flatness detection and calibration, the sliding seat is pushed by the handle to horizontally move, if the road surface is flat, the two first rollers and the elastic telescopic rod move along the sliding seat, and simultaneously, the two first rollers and the elastic telescopic rod can respectively draw a horizontal line on two sides of the drawing board with the line drawing mechanism, when the road surface is not flat, the first rollers can move upwards or downwards under the action of the elastic force of the elastic telescopic rod, and simultaneously, the line drawn on one side of the drawing board by the line drawing mechanism connected with the elastic telescopic rod can fluctuate.

2. The painting brush is in threaded connection with the threaded hole formed in the second connecting rod, so that the painting brush can be conveniently and quickly detached, and the distance between the pen point of the painting brush and the painting board can be adjusted by screwing the painting brush.

Drawings

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

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1 in accordance with the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 1 at D;

fig. 6 is a schematic view of the enlarged structure at E in fig. 2 according to the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings 1 to 6. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the invention, "a plurality" means two or more unless otherwise specified.

Examples

As shown in fig. 1 to 6, a flatness calibration device for mapping engineering comprises a concave mounting table 1, four universal wheels 2 with self-locking function, a sliding seat 3, a linear displacement mechanism, a drawing board 4, two elastic telescopic rods and a drawing mechanism; four universal wheels 2 with self-locking function are respectively fixed at four corners of the bottom of the mounting table 1; the sliding seat 3 is horizontally arranged below the mounting table 1; the linear displacement mechanism is arranged on the mounting table 1, and the output end of the linear displacement mechanism is connected with the top plate of the sliding seat 3 and is used for driving the sliding seat 3 to move horizontally; the drawing board 4 is vertically erected between two side walls of the mounting table 1, and the drawing board 4 is made of transparent materials; the two elastic telescopic rods are arranged on one side of the drawing board 4 in parallel, the tops of the two elastic telescopic rods are fixed with the bottom of the sliding seat 3, and the bottoms of the two elastic telescopic rods are provided with first rollers 51; the drawing mechanism is arranged below the sliding seat 3 and connected with the two elastic telescopic rods and used for drawing lines on two sides of the drawing board 4 when the two elastic telescopic rods move.

The working principle is as follows: it should be noted that, referring to fig. 1, when the elastic telescopic rod is not compressed, the height of the first roller 51 arranged at the bottom of the elastic telescopic rod is lower than the height of the universal wheel 2;

when the road flatness is detected, four universal wheels 2 with self-locking function in the device are contacted with the ground, two first rollers 51 compress the elastic telescopic rods, so that the heights of the universal wheels 2 and the first rollers 51 are kept to be parallel and level, then the universal wheels 2 are locked, the device is prevented from moving, meanwhile, the slide base 3 is driven by the linear displacement mechanism to move horizontally rightwards, the slide base 3 can drive the two elastic telescopic rods and the two first rollers 51 to move synchronously while moving, the two elastic telescopic rods can drive the animation line mechanism to draw lines on two sides of the drawing board 4 when moving, when the road surface is irregular, the first roller 51 on the right side can move upwards or downwards under the action of the elastic force of the elastic telescopic rods, and lines drawn on one side of the drawing board 4 by the line mechanism connected with the elastic telescopic rods can fluctuate, meanwhile, the first roller 51 positioned on the left side is still in a horizontal state, so that the line drawing mechanism connected with the elastic telescopic rod still keeps horizontal line drawing on the other side of the drawing board 4, the drawing board 4 is transparent, lines drawn on two sides can be compared, when the two lines are horizontally overlapped, the road is flat, when the two lines are not overlapped, the road is not flat, meanwhile, the fluctuation state of the lines can reflect the fluctuation state of the road surface, and the distance between the two misaligned lines can clearly reflect the height difference value between the roads respectively corresponding to the two first rollers 51.

Further, as shown in fig. 1, the elastic telescopic rod includes a first rod 52, a second rod 54 and a first spring 55; the upper end of the first rod 52 is fixed with the bottom of the sliding seat 3, and the lower end of the first rod 52 is provided with a first sliding chute 53 which is vertically arranged; the upper end of the second rod 54 is clamped in the first sliding chute 53 and can move up and down in the first sliding chute 53, and the first roller 51 is arranged at the lower end of the second rod 54; the first spring 55 is vertically disposed in the first sliding groove 53, and two ends of the first spring 55 are respectively fixed to the inner top surface of the first sliding groove 53 and the top of the second rod 54.

Further, as shown in figures 1, 3, 4 and 5, the line striping mechanism comprises a U-shaped attachment frame 6, a first line striping assembly and a second line striping assembly; the opening end of the U-shaped connecting frame 6 is vertically arranged downwards and is opposite to the top of the drawing board 4, the top of the U-shaped connecting frame 6 is fixed with the bottom of the sliding seat 3 through a first connecting rod 601, and the bottoms of the U-shaped connecting frame 6, which are positioned on the two side walls of the opening end, are provided with first mounting grooves 602; the first line drawing assembly and the second line drawing assembly are respectively arranged on two sides of the drawing board 4, and the first line drawing assembly comprises two second connecting rods 603, a squeezing block 607 and a transmission mechanism; the two second connecting rods 603 are arranged in one of the first mounting grooves 602, the two second connecting rods 603 are arranged in an X-shaped cross manner, the middle parts of the two second connecting rods 603 are hinged with each other through a hinge shaft 604 fixed in the first mounting groove 602, a painting brush 605 is detachably connected to the side wall of one end, away from the elastic telescopic rod, of one of the two second connecting rods 603, and the ends, away from the elastic telescopic rod 5, of the two second connecting rods 603 are connected with each other through a second spring 606; the extrusion block 607 is arranged between the ends of the two second connecting rods 603 close to the elastic telescopic rod 5, and the extrusion block 607 is in an isosceles trapezoid shape; the transmission mechanism is arranged at the bottom of the sliding seat 3, the input end of the transmission mechanism is connected with the side wall of one of the second rod bodies 54, and the output end of the transmission mechanism is connected with one end of the extrusion block 607 far away from the two second connecting rods 603, so that the extrusion block 607 is driven to move horizontally when the second rod body 54 moves vertically; the structure of the second line drawing assembly is the same as that of the first line drawing assembly, and the input end of the transmission mechanism in the second line drawing assembly is connected with the side wall of the other second rod body 54.

Further, as shown in fig. 1, 2, 4 and 6, the transmission mechanism of the first line marking assembly comprises a connecting block 608, an L-shaped supporting rod 613, a rotating shaft 614, a sleeve 616 and a fourth connecting rod 617; the connecting block 608 is horizontally arranged, the top of the connecting block 608 is fixed to the bottom of the sliding base 3 through a third connecting rod 609, a second mounting groove 610 is formed in the side wall, opposite to the first rod body 52, of the connecting block 608, a second sliding groove is formed in the upper and lower inner walls of the second mounting groove 610, a sliding rod 611 is connected in the second sliding groove in a sliding mode, two ends of the sliding rod 611 extend out of the second sliding groove, one end of the sliding rod 611 is fixed to the side wall, far away from the second connecting rod 63, of the extrusion block 607, and a rack 612 is fixed to the side wall, opposite to the first rod body 52, of the sliding rod 611; the L-shaped support rod 613 is arranged at one side of the connecting block 608 provided with the second mounting groove 610, and the vertical end of the L-shaped support rod 613 is fixed with the bottom of the sliding seat 3; the rotating shaft 614 is vertically arranged, the upper end of the rotating shaft 614 is rotatably connected with the bottom of the sliding seat 3, the lower end of the rotating shaft 614 is rotatably connected with the horizontal end of the L-shaped supporting rod 613, a gear 615 is fixedly sleeved on the rotating shaft 614, the gear 615 is meshed with the rack 612, and a shaft section of the rotating shaft 614 below the drawing board 4 is provided with a first external thread; the sleeve 616 is sleeved on the shaft section of the rotating shaft 614 provided with the thread, and the inner wall of the sleeve 616 is provided with a first internal thread matched with the first external thread; one end of the fourth link 617 is fixed to the sidewall of the sleeve 616, and the other end of the fourth link 617 is fixed to the sidewall of the second rod 54 of the one of the elastic telescopic rods; the drive mechanism in the second line drawing assembly is the same as the drive mechanism in the first line drawing assembly in structure, and the side wall of the sleeve 616 in the second line drawing assembly is fixed with the side wall of the second rod body 54 in another elastic telescopic rod through the fourth connecting rod 617.

The line drawing principle is as follows:

when the road surface contacted by the first roller 51 is uneven, under the elastic force of the first spring 55, the second rod 54 can move up and down in the first sliding groove 53 arranged on the first rod 52, the sleeve 616 is synchronously driven by the fourth connecting rod 617 to move up and down in the process of moving up and down of the second rod 54, because the sleeve 616 is in threaded connection with the shaft section provided with threads on the rotating shaft 614, and two ends of the rotating shaft 614 are respectively in rotational connection with the bottom of the sliding seat 3 and the horizontal end of the L-shaped support rod 613, the rotating shaft 614 is driven to rotate in the process of moving up and down of the sleeve 616, the rotating shaft 614 rotates the synchronous gear 615, the gear 615 drives the rack 612 engaged with the gear to move horizontally and left and right, the rack 612 drives the sliding rod 611 and the squeezing block 607 to move horizontally and left and right synchronously, referring to fig. 5, when the squeezing block 607 moves horizontally and right, the left ends of the two second connecting rods 603 which are arranged in an X-shaped cross mode are extruded, and the middle parts of the two second connecting rods 603 which are arranged in an X-shaped cross mode are hinged with each other through a hinge shaft 604, so that an opening formed by the right ends of the two second connecting rods 603 which are arranged in an X-shaped cross mode is gradually reduced, a painting brush 605 is driven to move downwards in the reducing process, and therefore when the sliding seat 3 moves horizontally to the right, a line track drawn by the painting brush 605 moves downwards in an inclined mode, and represents that the road surface at the position is in a concave state; when the squeeze block 607 moves horizontally to the left, the left ends of the two second connecting rods 603 arranged in an X-shaped intersection will be released, under the elastic force of the second spring 606, the opening formed at the right end of the two second connecting rods 603 arranged in an X-shaped intersection will be gradually enlarged, and the painting brush 605 will be driven to move upwards in the enlarging process, so that when the sliding base 3 moves horizontally to the right, the line track drawn by the painting brush 605 is an obliquely upwards moving track, which represents that the road surface is in a convex state, and if the road surface contacted by the first roller 51 is flat, the track drawn by the painting brush 605 is a horizontal line, so when the two first rollers 51 contact a road surface with a different undulated state, the tracks of the lines drawn by the painting brush 605 on the two sides of the painting board 4 corresponding to each first roller 51 will not coincide horizontally, and the distance between the two non-coincident lines can clearly reflect the height between the roads corresponding to each first roller 51 The difference value.

Further, as shown in fig. 3 to 5, in order to detach the painting brush 605 from the second connecting rod 603, a threaded hole is formed in a side wall of the second connecting rod 603, a second external thread matched with the threaded hole is formed in an outer side wall of the painting brush 605, when the painting brush 605 is used for drawing a line, the painting brush 605 is screwed into the threaded hole, and meanwhile, the distance between the pen point of the painting brush 605 and the painting board 4 can be adjusted by screwing the painting brush 605, which is very convenient.

Furthermore, as shown in fig. 4 and 5, in order to prevent the two second connecting rods 603 from being frequently contacted with the pressing block 607 to cause abrasion, third mounting grooves 71 are respectively formed at one ends of the two second connecting rods 603, which are close to the pressing block 607, a second roller 72 is arranged in each third mounting groove 71, the second rollers 72 are contacted with the pressing block 607, and the rolling contact between the second rollers 72 and the pressing block 607 can reduce the friction force, and can make the two second connecting rods 603 move more smoothly when being pressed or loosened by the pressing block 607.

Further, as shown in fig. 1 and 2, the linear displacement mechanism includes a first connecting plate 81 and a second connecting plate 83; the first connecting plate 81 is horizontally arranged at the top of the mounting table 1, and a handle 82 is arranged at the top of the first connecting plate 81; the second connecting plate 83 is vertically clamped in the slot 84 and can move in the slot 84, the slot 84 is arranged at the top of the mounting table 1 and is arranged along the length direction of the mounting table 1, the top of the second connecting plate 83 extends out of the slot 84 and is fixed with the bottom of the first connecting plate 81, the bottom of the second connecting plate 83 extends out of the slot 84 and is fixed with the top of the sliding base 3, when the sliding base 3 is moved, the handle 82 is pushed by hands, the handle 82 drives the first connecting plate 81 to synchronously and horizontally move, and as the second connecting plate 83 is vertically clamped in the slot 84 and can move in the slot 84, the sliding base 3 is driven by the second connecting plate 83 to synchronously and horizontally move when the sliding base 81 moves.

Furthermore, as shown in fig. 1 and 2, in order to make the sliding base 3 move more smoothly, a sliding column 9 is arranged between two side walls of the mounting table 1 in parallel, and the sliding base 3 is sleeved on the two sliding columns 9 and is connected with the two sliding columns 9 in a sliding manner.

Although the preferred embodiments of the present invention have been disclosed, the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. The utility model provides a roughness calibrating device for mapping engineering, is including being concave type mount table (1), its characterized in that still includes:

four universal wheels (2) with self-locking function are respectively fixed at four corners of the bottom of the mounting table (1);

the sliding seat (3) is horizontally arranged below the mounting table (1);

the linear displacement mechanism is arranged on the mounting table (1), and the output end of the linear displacement mechanism is connected with the top plate of the sliding seat (3) and is used for driving the sliding seat (3) to horizontally move;

the drawing board (4) is vertically erected between the two side walls of the mounting table (1), and the drawing board (4) is made of transparent materials;

the two elastic telescopic rods are arranged on one side of the drawing board (4) in parallel, the tops of the two elastic telescopic rods are fixed with the bottom of the sliding seat (3), and the bottoms of the two elastic telescopic rods are provided with first rollers (51);

and the line drawing mechanism is arranged below the sliding seat (3), is connected with the two elastic telescopic rods and is used for drawing lines on two sides of the drawing board (4) when the two elastic telescopic rods move.

2. A flatness calibration device for mapping engineering according to claim 1, characterized in that said elastic telescopic rod comprises:

the upper end of the first rod body (52) is fixed with the bottom of the sliding seat (3), and the lower end of the first rod body is provided with a first sliding groove (53) which is vertically arranged;

the upper end of the second rod body (54) is clamped in the first sliding groove (53) and can move up and down in the first sliding groove (53), and the first roller (51) is arranged at the lower end of the second rod body (54);

the first spring (55) is vertically arranged in the first sliding groove (53), and two ends of the first spring (55) are fixed to the inner top surface of the first sliding groove (53) and the top of the second rod body (54) respectively.

3. A flatness calibration device for mapping projects according to claim 2, characterized in that said line drawing mechanism comprises:

the opening end of the U-shaped connecting frame (6) is vertically arranged downwards and is opposite to the top of the drawing board (4), the top of the U-shaped connecting frame (6) is fixed with the bottom of the sliding seat (3) through a first connecting rod (601), and first mounting grooves (602) are formed in the bottoms of the U-shaped connecting frame (6) on the two side walls of the opening end;

first setting-out subassembly and second setting-out subassembly set up respectively the both sides of drawing board (4), first setting-out subassembly includes:

the two second connecting rods (603) are arranged in one first mounting groove (602), the two second connecting rods (603) are arranged in an X-shaped crossed manner, the middle parts of the two second connecting rods (603) are hinged with each other through hinge shafts (604) fixed in the first mounting groove (602), one side wall of one second connecting rod (603) far away from one end of the elastic telescopic rod is detachably connected with a painting brush (605), and one ends of the two second connecting rods (603) far away from the elastic telescopic rod (5) are connected with each other through second springs (606);

the extrusion block (607) is arranged between one ends of the two second connecting rods (603) close to the elastic telescopic rod (5), and the extrusion block (607) is in an isosceles trapezoid shape;

the transmission mechanism is arranged at the bottom of the sliding seat (3), the input end of the transmission mechanism is connected with the side wall of one of the second rod bodies (54), and the output end of the transmission mechanism is connected with one end, far away from the two second connecting rods (603), of the extrusion block (607) and is used for driving the extrusion block (607) to horizontally move when the second rod body (54) vertically moves;

the structure of the second line drawing assembly is the same as that of the first line drawing assembly, and the input end of a transmission mechanism in the second line drawing assembly is connected with the side wall of another second rod body (54).

4. A flatness calibration device for use in mapping projects according to claim 3, wherein the transmission mechanism in said first line striping assembly comprises:

the connecting block (608) is horizontally arranged, the top of the connecting block (608) is fixed to the bottom of the sliding seat (3) through a third connecting rod (609), a second mounting groove (610) is formed in the side wall, opposite to the first rod body (52), of the connecting block (608), a second sliding groove is formed in the upper inner wall and the lower inner wall of the second mounting groove (610), a sliding rod (611) is connected in the second sliding groove in a sliding mode, two ends of the sliding rod (611) extend out of the second sliding groove, one end of the sliding rod (611) is fixed to the side wall, far away from the second connecting rod (63), of the extrusion block (607), and a rack (612) is fixed to the side wall, opposite to the first rod body (52), of the sliding rod (611);

the L-shaped supporting rod (613) is arranged on one side of the connecting block (608) provided with the second mounting groove (610), and the vertical end of the L-shaped supporting rod (613) is fixed with the bottom of the sliding seat (3);

the rotating shaft (614) is vertically arranged, the upper end of the rotating shaft (614) is rotatably connected with the bottom of the sliding seat (3), the lower end of the rotating shaft (614) is rotatably connected with the horizontal end of the L-shaped supporting rod (613), a gear (615) is fixedly sleeved on the rotating shaft (614), the gear (615) is meshed with the rack (612), and a first external thread is arranged on a shaft section of the rotating shaft (614) below the drawing board (4);

the sleeve (616) is sleeved on the shaft section of the rotating shaft (614) with the threads, and a first internal thread matched with the first external thread is arranged on the inner wall of the sleeve (616);

a fourth connecting rod (617), one end of which is fixed with the side wall of the sleeve (616), and the other end of which is fixed with the side wall of the second rod body (54) in the one elastic telescopic rod;

the drive mechanism in the second setting out subassembly with drive mechanism's in the first setting out subassembly structure is the same, the lateral wall of the second body of rod (54) in the sleeve (616) in the second setting out subassembly and another elasticity telescopic link passes through fourth connecting rod (617) and fixes.

5. The flatness calibration device for mapping engineering according to claim 3, wherein a threaded hole is formed on the side wall of the second connecting rod (603), and a second external thread matched with the threaded hole is formed on the outer side wall of the painting brush (605).

6. A flatness calibration device for mapping engineering according to claim 3, characterized in that the two second connecting rods (603) are provided with third mounting grooves (71) near the end of the extrusion block (607), each third mounting groove (71) is provided with a second roller (72), and the second rollers (72) are in contact with the extrusion block (607).

7. A flatness calibration device for mapping engineering according to claim 1, wherein said linear displacement mechanism comprises:

the first connecting plate (81) is horizontally arranged at the top of the mounting table (1), and a handle (82) is arranged at the top of the first connecting plate (81);

the second connecting plate (83) is vertically clamped in the slot (84) and can move in the slot (84), the slot (84) is formed in the top of the mounting table (1) and arranged along the length direction of the mounting table (1), the top of the second connecting plate (83) extends out of the slot (84) and is fixed with the bottom of the first connecting plate (81), and the bottom of the second connecting plate (83) extends out of the slot (84) and is fixed with the top of the sliding base (3).

8. The flatness calibrating device for mapping engineering according to claim 7, wherein a sliding column (9) is erected between two side walls of the mounting table (1), and the sliding base (3) is sleeved on the two sliding columns (9) and is connected with the two sliding columns (9) in a sliding manner.