Urban and rural planning design drawing display device

Abstract

The utility model provides an urban and rural planning design drawing display device which comprises a display board, a cavity penetrating along the height direction is arranged in the display board, a transparent window for displaying a design drawing is arranged on the display board on one side of the cavity, and a driving mechanism for driving the design drawing to move upwards is arranged below the display board. The driving mechanism comprises a driving roller, a traction mechanism and a transmission mechanism. The transmission mechanism drives one driving roller to rotate, the design drawing abuts against the position between the two driving rollers to be squeezed so that the design drawing can be upwards inserted into the traction mechanism, and the traction mechanism drives the design drawing to move upwards so that the design drawing can be flatly laid in the cavity. The display board is further provided with a ruler part used for measuring and checking a design drawing, the ruler part comprises a rotating ruler capable of being driven to move in the length direction and the width direction of the display board, and the rotating ruler can further rotate relative to the display board. According to the utility model, the design drawing can be automatically installed and replaced, the tiling effect is ensured, the summarization and design details of the design drawing can be clearly checked, and the checking effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of urban and rural planning design drawing display devices, and particularly relates to an urban and rural planning design drawing display device. Background Art

[0002] Urban and rural planning analysis drawings are the most important drawing parts in urban design drawings. In the implementation process of urban and rural planning management, since the overall planning is the macro control of the city, the urban design drawings implement urban planning, guide architectural design, and shape the urban characteristic style, running through the whole process of urban planning, construction and management. Among them, it is necessary to consider regional coordination, land-sea overall planning, urban-rural integration, coordinated ecology, production and living spaces, and improve the relationship between humans and the environment.

[0003] The content of the existing formed planning analysis drawings is numerous. Especially in large and medium-sized cities, most of the planning analysis drawings occupy a very large area. If the design drawings are reduced and then displayed in the street or the publicity hall, it is very difficult to really see clearly, bringing a burden to the people who want to view the details and unable to truly achieve the purpose of displaying the design drawings.

[0004] In addition, most of the existing display racks for urban and rural planning analysis drawings need to be manually operated for hanging. Since the design drawings are still relatively large even after being reduced in size, it is difficult to install when hanging and fixing the design drawings. And because the current urban integration changes rapidly, with the changes in urban construction, the update of urban and rural planning design drawings is also relatively frequent. Therefore, the replacement and installation of urban and rural planning analysis drawings need to be more convenient and simple to implement. Content of the Utility Model

[0005] In view of this, the utility model aims to provide an urban and rural planning design drawing display device, which can quickly and simply replace the design drawings and is also convenient for viewing the design drawings.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] An urban and rural planning design drawing display device includes a display board. A cavity penetrating along the height direction is arranged inside the display board. A transparent window for displaying the design drawing is provided on the display board on one side of the cavity. A driving mechanism for driving the design drawing to move upward is arranged below the display board.

[0008] The driving mechanism includes a driving roller extending along the length direction of the display board, a traction mechanism sliding up and down along the cavity, and a transmission mechanism for driving one of the driving rollers to rotate and driving the traction mechanism to slide.

[0009] The transmission mechanism drives one of the driving rollers to rotate, and the design drawing abuts between the two driving rollers to squeeze the design drawing, so that the design drawing is inserted upward into the traction mechanism. The traction mechanism drives the design drawing to move upward, so that the design drawing is laid flat in the cavity;

[0010] A scale part for measuring and viewing the design drawing is further provided on the display board. The scale part includes a rotating ruler that can be driven to move along the length direction and width direction of the display board, and the rotating ruler can also rotate relative to the display board.

[0011] Further, the driving mechanism includes a first driving part for driving one of the driving rollers to rotate, a driving wheel connected to one end of the driving roller away from the first driving part, a rotating shaft pivotally connected above the display board, and a driven wheel connected to one end of the rotating shaft close to the driving wheel;

[0012] The driving wheel and the driven wheel are connected by a chain;

[0013] The upper end of the traction mechanism is connected to the rotating shaft through a connecting piece. When the rotating shaft rotates, the connecting piece winds around the rotating shaft, so that the traction mechanism slides upward;

[0014] The two driving rollers are arranged along the thickness direction of the display board, and there is an accommodation gap between the two driving rollers, and the accommodation gap is adapted to the thickness of the design drawing.

[0015] Further, a connecting plate is provided below the display board, the two driving rollers are pivotally connected to the connecting plate, and a second driving part is further provided on the connecting plate. The power output end of the second driving part is connected to one of the driving rollers; to adjust the size of the accommodation gap.

[0016] Further, the traction mechanism includes two opposite top plates, a rotating rod pivotally arranged between the two top plates, and a fixing block connected between the two top plates;

[0017] There is an insertion gap between the rotating rod and the fixing block. The design drawing is driven by being pressed by the two driving rollers, so that the design drawing moves upward into the insertion gap;

[0018] The traction mechanism is provided with an adjusting part for adjusting the insertion gap.

[0019] Further, the adjusting part includes a third driving part arranged on the fixing block, and an opening groove is provided at one end of the top plate. The third driving part drives the rotating rod to slide along the opening groove, so that the rotating rod approaches or moves away from the fixing block;

[0020] The side of the fixed block close to the rotating rod has an inclined surface, and a chute in the shape of an inverted "8" is formed between the inclined surface and the rotating rod, and the design drawing enters the insertion gap from the chute.

[0021] Furthermore, positioning grooves penetrating through the display board in the height direction are provided on both sides of the cavity of the display board, and the sizes of the positioning grooves are adapted to those of the top plate.

[0022] A flow groove is formed between the positioning groove and the cavity; the flow groove can accommodate the rotating rod and the fixed block to pass through.

[0023] Furthermore, a guide wheel is provided on one side of each top plate facing the outside of the display board, and the two guide wheels are rotatably connected to the top plate.

[0024] Rectangular grooves penetrating through the display board in the height direction are provided at corresponding positions on both sides of the display board, the rectangular grooves are communicated with the positioning grooves, and the two guide wheels respectively abut against the two side surfaces of the rectangular grooves.

[0025] Furthermore, a bracket is provided below the display rack, and the bracket includes a base, two legs respectively arranged on the base, and a support plate arranged between the legs.

[0026] The support plate is arranged along the length direction of the display rack, and there is an accommodation space between the support plate and the driving roller in the height direction of the bracket, and one end of the design drawing is driven to enter the accommodation gap from the accommodation space.

[0027] Furthermore, the scale part includes a vertical scale fixed on the display board in the height direction, a rotating scale slidably connected to the vertical scale, and a magnifying glass that can be adjusted and moved along the length direction of the rotating scale.

[0028] First scale lines are provided on the vertical scale, and second scale lines are provided on the rotating scale.

[0029] Furthermore, a slider is sleeved on the vertical scale, a protractor is pivotally connected to the slider, the rotating scale is fixedly connected to the protractor, an arrow is provided on the slider, and circumferential scales are provided on the protractor.

[0030] A long groove is provided on the rotating scale along its length direction, the magnifying glass is connected to the rotating scale through a mounting plate, a connecting nail is provided on the mounting plate, and the connecting nail is driven to slide along the long groove.

[0031] Compared with the prior art, the utility model has the following advantages:

[0032] The urban-rural planning design drawing display device described in the present utility model drives one driving roller to rotate through a transmission mechanism, so that the two driving rollers rotate relatively to drive the design drawing upward. After the upper end of the design drawing is driven upward, it is inserted into the traction mechanism. With the drive of the transmission mechanism, the traction mechanism moves upward to the top of the display board, making the design drawing spread flat in the cavity of the display board and being displayed through a transparent window. It can automatically install and replace the design drawing to ensure the spreading effect. Moreover, a scale part for measuring and viewing the design drawing is also provided on the display board. By moving the rotating scale, the scale of the street or building to be viewed can be calculated, and the general situation and details of the design drawing can be understood more clearly, improving the viewing effect.

[0033] In addition, by setting a first driving part to drive one driving roller to rotate, the driving wheel rotates, and the driven wheel and the rotating shaft are driven to rotate through chain transmission. The traction mechanism is moved upward through a connecting part. This structural design is simple and easy to implement.

[0034] Moreover, by setting a second driving part, one driving roller can be driven to approach or move away from the other driving roller, that is, the size of the accommodation gap is adjusted. In this way, during the upward movement of the design drawing with the traction mechanism, the accommodation gap can be adjusted to be slightly larger to reduce the resistance when the design drawing moves upward. The design drawing moves upward in the accommodation gap, playing a good guiding and positioning role. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0036] Figure 1 is a three-dimensional structural schematic diagram of the urban-rural planning design drawing display device described in the embodiment of the present utility model;

[0037] Figure 2 is a front view structural schematic diagram of the urban-rural planning design drawing display device described in the embodiment of the present utility model;

[0038] Figure 3 is a connection structural schematic diagram of the display board, the scale part, the driving mechanism and the transmission mechanism described in the embodiment of the present utility model;

[0039] Figure 4 is a top view structural schematic diagram of the urban-rural planning design drawing display device described in the embodiment of the present utility model;

[0040] Figure 5 is a cross-sectional schematic diagram of the rotating rod and the fixed block in the traction mechanism described in the embodiment of the present utility model;

[0041] Figure 6 is Figure 3Partial enlarged schematic view at position I in the figure;

[0042] Figure 7 is Figure 2 Cross-sectional schematic view at A-A in the figure.

[0043] Description of reference numerals:

[0044] 1. Display board; 2. Driving mechanism; 3. Traction mechanism; 4. Transmission mechanism; 5. Scale part; 6. Bracket; 7. Connecting piece;

[0045] 101. Cavity; 102. Transparent window; 103. Positioning groove; 104. Flow groove; 105. Rectangular groove;

[0046] 201. Driving roller; 202. Connecting plate; 203. Second driving part;

[0047] 301. Top plate; 302. Rotating rod; 303. Fixed block; 304. Insertion gap; 305. Third driving part; 306. Guide groove; 307. Guide wheel;

[0048] 401. First driving part; 402. Driving wheel; 403. Rotating shaft; 404. Driven wheel; 405. Chain;

[0049] 501. Vertical ruler; 502. Rotating ruler; 503. Magnifying glass; 504. Slide block; 505. Angle scale; 506. Mounting plate; 507. Connecting nail;

[0050] 601. Base; 602. Leg; 603. Support plate;

[0051] 3011. Opening groove;

[0052] 3031. Inclined plane;

[0053] 5021. Long groove. Specific implementation mode

[0054] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0055] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0056] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0057] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0058] This embodiment relates to a display device for urban and rural planning design drawings. The display device for urban and rural planning design drawings includes a display board 1. Among them, a cavity 101 penetrating in the height direction is provided inside the display board 1. A transparent window 102 for displaying the design drawing is provided on the display board 1 on one side of the cavity 101. A driving mechanism 2 for driving the design drawing to move upward is provided below the display board 1. The driving mechanism 2 includes a driving roller 201 extending along the length direction of the display board 1, a traction mechanism 3 sliding up and down along the cavity 101, and a transmission mechanism 4 for driving one of the driving rollers 201 to rotate and driving the traction mechanism 3 to slide.

[0059] Secondly, the transmission mechanism 4 drives one of the driving rollers 201 to rotate, and the design drawing is pressed against and squeezed between the two driving rollers 201, so that the design drawing is inserted upward onto the traction mechanism 3. The traction mechanism 3 is driven to drive the design drawing to move upward, so that the design drawing is laid flat in the cavity 101. A scale part 5 for measuring and viewing the design drawing is also provided on the display board 1. The scale part 5 includes a rotating scale 502 that can be driven to move along the length direction and width direction of the display board 1, and the rotating scale 502 can also rotate relative to the display board 1.

[0060] For the display device for urban and rural planning design drawings of this embodiment, the transmission mechanism 4 drives one of the driving rollers 201 to rotate, so that the two driving rollers 201 rotate relatively to drive the design drawing upward. After the upper end of the design drawing is driven to move upward, it is inserted into the traction mechanism 3. With the drive of the transmission mechanism 4, the traction mechanism 3 moves upward to the top of the display board 1, so that the design drawing is laid flat in the cavity 101 of the display board 1 and is displayed through the transparent window 102. The structural design is simple, without manual operation, and can ensure the laying effect of the design drawing, and can automatically install and replace the design drawing to ensure the laying effect. Moreover, a scale part 5 for measuring and viewing the design drawing is also provided on the display board 1. By moving the rotating scale 502 to calculate the ratio of the streets or buildings to be viewed, the general situation and details of the design drawing can be understood more clearly, improving the viewing effect.

[0061] Based on the above overall introduction, an exemplary structure of the display device for urban and rural planning design drawings of this embodiment is asFigures 1 to 3 As shown in the figure, the outer shape of the display board 1 is a rectangular structure. The cavity 101 penetrates through the display board 1 from top to bottom in the height direction of the display board 1. The transparent window 102 is arranged on the display board 1 and communicates with the cavity 101. The design drawing can be laid flat in the cavity 101 so that the part to be displayed is shown in the transparent window 102. The structure and outer shape size of the cavity 101 in this embodiment are adapted to the size and structure of the design drawing.

[0062] As a preferred embodiment, as Figures 1 to 3 shown, the transmission mechanism 4 includes a first driving part 401 for driving one driving roller 201 to rotate, a driving wheel 402 connected to one end of the driving roller 201 away from the first driving part 401, a rotating shaft 403 pivotally connected above the display board 1, and a driven wheel 404 connected to one end of the rotating shaft 403 close to the driving wheel 402. The driving wheel 402 and the driven wheel 404 are connected by a chain 405. A deep groove ball bearing is provided between the driving roller 201 and the display board 1 in this embodiment to increase the rotational flexibility of the driving roller 201. The driven wheel 404 and the driving wheel 402 are sprockets. Of course, when the design drawing is light in weight, a belt and pulley transmission method can also be used.

[0063] In addition, as Figures 1 to 2 shown, the upper end of the traction mechanism 3 is connected to the rotating shaft 403 through a connecting piece 7. When the rotating shaft 403 rotates, the connecting piece 7 winds around the rotating shaft 403 to make the traction mechanism 3 slide upward. The two driving rollers 201 are arranged along the thickness direction of the display board 1, and there is an accommodation gap between the two driving rollers 201, and the accommodation gap is adapted to the thickness of the design drawing. The connecting piece 7 in this embodiment is made of a rope, wire or the like. In order to achieve a better balance effect, the connecting piece 7 can be arranged in the middle or on both sides of the traction mechanism 3. In this embodiment, the first driving part 401 is set to drive one driving roller 201 to rotate, so that the driving wheel 402 rotates. The driven wheel 404 and the rotating shaft 403 are driven to rotate through the chain 405 transmission, and the traction mechanism 3 is moved upward through the connecting piece 7. The structural design is simple and easy to implement.

[0064] Furthermore, as Figures 1 to 3As shown in the figure, a connecting plate 202 is provided below the display board 1. Two driving rollers 201 are pivotally connected to the connecting plate 202. A second driving part 203 is also provided on the connecting plate 202. The power output end of the second driving part 203 is connected to one of the driving rollers 201 to adjust the size of the accommodation gap. The connecting plate 202 is formed into an arcuate plate with a downward opening. Its upper end is fixed to the lower plane of the display board 1 and has a through groove communicating with the cavity 101. The two driving rollers 201 are rotatably connected to the two side plates of the connecting plate 202. The first driving part 401 is fixed to one of the side plates, and its power output end is fixedly key-connected to one of the driving rollers 201. The driving wheel 402 is connected to the end of one of the driving rollers 201 far from the first driving part 401 and is fixedly connected to the center of the driving roller 201.

[0065] As Figure 3 shown in the figure, in order to achieve a better use effect, second driving parts 203 are also provided on the two side plates. The two second driving parts 203 are respectively connected to the two side plates. An opening groove 3011 is provided on the side plate along the width direction of the display board 1. The driving roller 201 includes a central shaft and a rotating roller sleeve sleeved on the central shaft. A deep groove ball bearing is provided between the central shaft and the rotating roller sleeve. The central shaft is arranged in the opening groove 3011. The central shaft of the above-mentioned one driving roller 201 is fixedly connected to the rotating roller sleeve, and a deep groove ball bearing is arranged between the central shaft of the driving roller 201 and the side plate. The specific structure can refer to the prior art and will not be elaborated here.

[0066] In this embodiment, by setting the second driving part 203, one of the driving rollers 201 can be driven to approach or move away from the other driving roller 201, that is, to adjust the size of the accommodation gap. With such a setting, during the upward movement of the design drawing along with the traction mechanism 3, the accommodation gap can be adjusted to be slightly larger, so as to reduce the resistance when the design drawing moves upward. The design drawing moves upward in the accommodation gap, playing a good guiding and positioning role.

[0067] As a preferred embodiment, as Figures 4 to 5 shown in the figure, the traction mechanism 3 includes two opposite top plates 301, a rotating rod 302 pivotally arranged between the two top plates 301, and a fixing block 303 connected between the two top plates 301. There is an insertion gap 304 between the rotating rod 302 and the fixing block 303. The design drawing is pressed and driven by the two driving rollers 201 to move upward into the insertion gap 304. The traction mechanism 3 is provided with an adjusting part for adjusting the insertion gap 304.

[0068] As Figure 5As shown in the figure, the adjusting part includes a third driving part 305 arranged on the fixed block 303. One end of the top plate 301 is provided with an opening groove 3011. The third driving part 305 drives the rotating rod 302 to slide along the opening groove 3011, so that the rotating rod 302 approaches or moves away from the fixed block 303. One side of the fixed block 303 close to the rotating rod 302 has an inclined surface 3031. An "eight"-shaped guide groove 306 is formed between the inclined surface 3031 and the rotating rod 302. The design drawing enters the insertion gap 304 from the guide groove 306.

[0069] In the initial stage, the upper end of the design drawing can be manually moved up to the traction mechanism 3 through the two driving rollers 201 and inserted into the insertion gap 304. At this time, the insertion gap 304 is adjusted to be smaller through the adjusting part to fix the design drawing on the traction mechanism 3. At this time, the first driving part 401 is started, and the two driving rollers 201 rotate to squeeze and convey the design drawing upward. At this time, the accommodation gap can be adjusted through the second driving part 203 to avoid excessive friction between the two driving rollers 201 and the design drawing, which affects its upward movement. The two driving rollers 201 can play an auxiliary positioning and guiding role to avoid the design drawing from being wrinkled.

[0070] Moreover, the moving speed of the design drawing can be adjusted according to the transmission ratio of the driving wheel 402 and the driven wheel 404 and the operating speed of the first driving part 401. The first driving part 401 in this embodiment adopts a servo motor. The second driving part 203 and the third driving part 305 adopt telescopic cylinders. Moreover, a connecting fork connected by thread is provided at the piston rod end of the telescopic cylinder. The connecting fork can refer to the existing technology and can adjust the stroke appropriately according to requirements to meet the adjustment needs.

[0071] Combined Figure 4 and Figure 6 As shown in the figure, positioning grooves 103 penetrating through itself in the height direction are further provided on both sides of the cavity 101 of the display board 1. The positioning grooves 103 are adapted to the size of the top plate 301. A flow groove 104 is provided between the positioning groove 103 and the cavity 101. The flow groove 104 can accommodate the rotating rod 302 and the fixed block 303 to pass through. By providing the positioning grooves 103, the top plate 301 can slide in the positioning grooves 103, which not only has a guiding effect on the traction mechanism 3 to avoid distortion during the rising process of the design drawing, but also can limit the position of the design drawing and the transparent window 102 to avoid adjustment and improve the display effect.

[0072] Still as Figure 4 and Figure 6 As shown in the figure, a guide wheel 307 is provided on one side of each top plate 301 facing the outside of the display board 1. The two guide wheels 307 are rotatably connected to the top plate 301. Rectangular grooves 105 penetrating through itself in the height direction are provided at corresponding positions on both sides of the display board 1. The rectangular grooves 105 are communicated with the positioning grooves 103. The two guide wheels 307 are respectively abutted against the two side surfaces of the rectangular groove 105.

[0073] The guide wheels 307 are fixed on the top plate 301 through pin shafts. Deep groove ball bearings are also provided between the pin shafts and the guide wheels 307. The two guide wheels 307 are respectively arranged in the rectangular grooves 105 and are in contact with the side walls of the rectangular grooves 105 of the display board 1, so as to limit the displacement of the traction mechanism 3 in the thickness direction of the display board 1 and play a role in front-back positioning, avoiding the problem that the design drawing is too far or too close to the transparent window 102 after being laid flat, which affects the display effect.

[0074] As Figure 1 and Figure 2 shown, a bracket 6 is further provided below the display board 1. The bracket 6 includes a base 601, two legs 602 respectively arranged on the base 601, and a support plate 603 arranged between the legs 602. The support plate 603 is arranged along the length direction of the display board 1. In the height direction of the bracket 6, there is a receiving space between the support plate 603 and the driving roller 201. One end of the design drawing is driven to enter the receiving gap from the receiving space.

[0075] Furthermore, as Figure 1 , Figure 2 , Figure 7 shown, the scale part 5 includes a vertical scale 501 fixed on the display board 1 along the height direction, a rotating scale 502 slidably connected to the vertical scale 501, and a magnifying glass 503 that can be adjusted and moved along the length direction of the rotating scale 502. The first scale lines are provided on the vertical scale 501, and the second scale lines are provided on the rotating scale 502. By setting the rotating scale 502, the measurability of the design drawing can be increased. For example, the information can be clearly obtained when checking the distance and ratio. By setting the magnifying glass 503, the design drawing can be viewed more clearly, improving the convenience of viewing the drawing.

[0076] In addition, as Figure 1 , Figure 2 , Figure 7 shown, a slider 504 is sleeved on the vertical scale 501. A dial 505 is pivotally connected to the slider 504. The rotating scale 502 is fixedly connected to the dial 505. An arrow is provided on the slider 504, and circumferential scales are provided on the dial 505. A long groove 5021 is provided on the rotating scale 502 along its length direction. The magnifying glass 503 is connected to the rotating scale 502 through a mounting plate 506. A connecting nail 507 is provided on the mounting plate 506, and the connecting nail 507 is driven to slide along the long groove 5021.

[0077] The slider 504 of this embodiment is wrapped around the outside of the fixed scale. It has a through groove for accommodating the fixed scale. There is also a screw for locking on the slider 504, which is not shown in the figure. After the slider 504 is in place, it can be locked. Then, by rotating the rotating scale 502, the rotating scale 502 is moved to the area to be measured or viewed. The magnifying glass 503 of this embodiment can slide with the rotating scale 502 to assist in magnified viewing. With such a setting, it conforms to the viewing logic, that is, after viewing the overall design drawing, the position to be viewed is searched in the height and length directions of the drawing. Also, through the setting of the scale portion 5, a basic reference point can be provided for the position to be viewed, avoiding the defect of forgetting the viewing position after viewing and having to view repeatedly.

[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An urban-rural planning design drawing display device, comprising a display board (1), characterized in that: A cavity (101) penetrating in the height direction is provided in the display board (1). A transparent window (102) for displaying the design drawing is provided on the display board (1) on one side of the cavity (101). A driving mechanism (2) for driving the design drawing to move upward is provided below the display board (1); The driving mechanism (2) includes a driving roller (201) extending along the length direction of the display board (1), a traction mechanism (3) sliding up and down along the cavity (101), and a transmission mechanism (4) for driving one of the driving rollers (201) to rotate and driving the traction mechanism (3) to slide; The transmission mechanism (4) drives one of the driving rollers (201) to rotate. The design drawing abuts between the two driving rollers (201) to squeeze the design drawing, so that the design drawing is inserted upward into the traction mechanism (3). The traction mechanism (3) drives the design drawing to move upward, so that the design drawing is laid flat in the cavity (101); A scale part (5) for measuring and viewing the design drawing is further provided on the display board (1). The scale part (5) includes a rotating ruler (502) that can be driven to move along the length direction and width direction of the display board (1), and the rotating ruler (502) can also rotate relative to the display board (1).

2. The urban-rural planning design drawing display device according to claim 1, characterized in that: The transmission mechanism (4) includes a first driving part (401) for driving one of the driving rollers (201) to rotate, a driving wheel (402) connected to one end of the driving roller (201) away from the first driving part (401), a rotating shaft (403) pivotally connected above the display board (1), and a driven wheel (404) connected to one end of the rotating shaft (403) close to the driving wheel (402); The driving wheel (402) and the driven wheel (404) are connected by a chain (405); The upper end of the traction mechanism (3) is connected to the rotating shaft (403) through a connecting part (7). When the rotating shaft (403) rotates, the connecting part winds around the rotating shaft (403), so that the traction mechanism (3) slides upward; The two driving rollers (201) are arranged along the thickness direction of the display board (1). There is an accommodation gap between the two driving rollers (201), and the accommodation gap is adapted to the thickness of the design drawing.

3. The urban-rural planning design drawing display device according to claim 2, characterized in that: A connecting plate (202) is provided below the display board (1). The two driving rollers (201) are pivotally connected to the connecting plate (202). A second driving part (203) is further provided on the connecting plate (202). The power output end of the second driving part (203) is connected to one of the driving rollers (201) to adjust the size of the accommodation gap.

4. The urban-rural planning design drawing display device according to claim 2, characterized in that: The traction mechanism (3) includes two opposite top plates (301), a rotating rod (302) pivotally arranged between the two top plates (301), and a fixing block (303) connected between the two top plates (301); There is an insertion gap (304) between the rotating rod (302) and the fixing block (303). The design drawing is pressed and driven by the two driving rollers (201) to move the design drawing upward into the insertion gap (304); The traction mechanism (3) is provided with an adjusting portion for adjusting the insertion gap (304).

5. The urban and rural planning design drawing display device according to claim 4, characterized in that: The adjusting portion includes a third driving portion (305) provided on the fixing block (303). One end of the top plate (301) is provided with an opening groove (3011). The third driving portion (305) drives the rotating rod (302) to slide along the opening groove (3011) so that the rotating rod (302) approaches or moves away from the fixing block (303); One side of the fixing block (303) close to the rotating rod (302) has an inclined surface (3031). An "eight"-shaped guide groove (306) is formed between the inclined surface (3031) and the rotating rod (302). The design drawing enters the insertion gap (304) from the guide groove (306).

6. The urban and rural planning design drawing display device according to claim 5, characterized in that: Positioning grooves (103) penetrating through the display board (1) itself in the height direction are further provided on both sides of the cavity (101) of the display board (1). The positioning grooves (103) are adapted to the size of the top plate (301); There is a flow groove (104) between the positioning groove (103) and the cavity (101); the flow groove (104) can accommodate the rotating rod (302) and the fixing block (303) to pass through.

7. The urban and rural planning design drawing display device according to claim 6, characterized in that: On one side of each top plate (301) facing the outside of the display board (1), a guide wheel (307) is provided. The two guide wheels (307) are rotatably connected to the top plate (301); Rectangular grooves (105) penetrating through the display board (1) itself in the height direction are provided at corresponding positions on both sides of the display board (1). The rectangular grooves (105) are communicated with the positioning grooves (103). The two guide wheels (307) are respectively abutted against the two side surfaces of the rectangular groove (105).

8. The urban and rural planning design drawing display device according to claim 7, characterized in that: A bracket (6) is further provided below the display board (1). The bracket (6) includes a base (601), two legs (602) respectively provided on the base (601), and a support plate (603) provided between the legs (602); The support plate (603) is arranged along the length direction of the display board (1). In the height direction of the bracket (6), there is a receiving space between the support plate (603) and the driving roller (201). One end of the design drawing is driven to enter the receiving gap from the receiving space.

9. The urban and rural planning design drawing display device according to claim 1, characterized in that: The scale part (5) includes a vertical scale (501) fixed on the display board (1) along the height direction, a rotary scale (502) slidably connected to the vertical scale (501), and a magnifying glass (503) that can be adjusted and moved along the length direction of the rotary scale (502); The vertical scale (501) is provided with first scale lines, and the rotary scale (502) is provided with second scale lines.

10. The urban and rural planning design drawing display device according to claim 9, characterized in that: A slider (504) is sleeved on the vertical scale (501). An angle dial (505) is pivotally connected to the slider (504). The rotary scale (502) is fixedly connected to the angle dial (505). An arrow is provided on the slider (504), and circumferential scales are provided on the angle dial (505); A long slot (5021) is arranged along the length direction of the rotary scale (502). The magnifying glass (503) is connected to the rotary scale (502) through a mounting plate (506). A connecting nail (507) is provided on the mounting plate (506), and the connecting nail (507) is driven to slide along the long slot (5021).

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