Drawing fixing support for construction engineering design and using method of drawing fixing support

Abstract

The invention discloses a drawing fixing support for construction engineering design and a using method of the drawing fixing support, and relates to the technical field of drawing fixing supports. According to the drawing fixing support for construction engineering design and the using method thereof, the drawing fixing support comprises an adjusting structure and a drawing fixing plate, the drawing fixing plate takes a drawing plate as a main body, the adjusting structure takes a rotating disc as a main body, a fixed rotating frame is arranged at the upper end of the rotating disc, and a fixed rotating shaft is arranged on the upper side of the fixed rotating frame; the middle of the fixed rotating shaft is connected to the front end of the lower side of an adjusting plate, the upper end of the adjusting plate is connected with a drawing board, the lower end of the rear side of the adjusting plate is connected to an adjusting shaft, push rods are connected to the left side and the right side of the adjusting shaft, and connecting shafts are arranged at the other ends of the push rods and connected to the two sides of a moving block. A guide plate is connected to the lower side of the moving block, the lower side of the guide plate is connected with a rotating disc, a driven gear ring is arranged on the lower side of the rotating disc, and drawing pressing plates are arranged at the left end and the right end of the drawing board.

Description

Technical Field

[0001] This invention relates to the field of drawing fixing bracket technology, specifically to a drawing fixing bracket for construction engineering design and its usage method. Background Technology

[0002] Drawing support stands are essential tools in the construction engineering design process, primarily used to support and secure design drawings. Using these stands allows designers to more easily view, draw, and modify drawings. During team collaborations or discussions, ensuring drawings are securely displayed in a suitable position improves work efficiency and communication effectiveness.

[0003] For example, patent number CN 215959061 U discloses a fixing bracket for electrical secondary circuit wiring diagrams in substations, including a support column. A mounting plate is rotatably connected to the upper end of the support column. An adjustment mechanism for driving the mounting plate to rotate is provided inside the support column. Two symmetrically arranged support rods are fixedly connected to the side of the mounting plate near the support column, and a telescopic rod is slidably connected to the upper end of each support rod. This utility model, by setting an adjustable-angle mounting plate, allows the mounting plate to rotate after the wiring diagram is fixed to the fixing bracket. The mounting plate then adjusts the angle of the diagram, making it convenient for users of different heights. Simultaneously, by setting a telescopic rod that is pushed by a spring and maintains an extended tendency, after the wiring diagram is clamped by the diagram clips, the telescopic rod can keep the upper diagram clip away from the lower diagram clip, thus keeping the wiring diagram in a straight and unfolded state, preventing bending or floating, and facilitating user observation.

[0004] For example, patent number CN 219438606 U discloses a display rack for conveniently fixing drawings. Its technical solution includes: a display rack body with a drawing fixing mechanism inside; the drawing fixing mechanism includes a drawing fixing frame, with fixing components on both sides of the frame; each fixing component includes a through groove, which is located on the side wall of the frame; a middle plate is fixedly installed inside the groove; a connecting rod is installed on one side of the middle plate, penetrating the middle plate; a first bracket is fixedly connected to one end of the connecting rod; a fixed wheel is connected to one side of the first bracket via a bearing; a second bracket is fixedly connected to the other end of the connecting rod; a push wheel is connected to the inner side of the second bracket via a bearing; a second spring is sleeved on the outside of the connecting rod; one end of the second spring is fixedly connected to the side wall of the middle plate. The beneficial effects of this invention are: ensuring the clarity of the drawings, providing good fixing effect, facilitating the fixing and disassembly of the drawings, effectively protecting the drawings, improving the mobility of the display rack, and reducing the workload of staff.

[0005] While both patents have certain limitations in their methods of securing drawings, the former primarily uses clips on the top and bottom sides in conjunction with telescopic rods to straighten and unfold the drawings. However, for larger or softer construction drawings, the stability of the edge clamps may be insufficient, and they are prone to loosening during frequent flipping or adjustments. The latter only allows the drawings to be laid flat on a drawing board, without adjustable angles, which can easily cause visual fatigue for users during prolonged viewing or drawing. This is especially problematic for construction design scenarios that require multi-angle collaborative discussions, as the lack of flexible viewing angle adjustment makes it difficult to meet the needs of users of different heights and positions, and neither patent allows for automatic rotation. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a fixing bracket for construction engineering design drawings and its usage method. It solves the problems of insufficient stability in holding large-sized or soft drawings at the edges, easy loosening with frequent flipping, inability to adjust the angle leading to visual fatigue during long-term viewing and drawing, difficulty in meeting the needs of multi-angle collaborative discussions, and inability to rotate automatically.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a fixing bracket for construction engineering design drawings and its usage method, comprising an adjusting structure and a drawing fixing plate, wherein the drawing fixing plate is based on the drawing plate itself, the adjusting structure is based on a rotating disk, a fixed rotating frame is provided at the upper end of the rotating disk, a fixed rotating shaft is provided on the upper side of the fixed rotating frame, the middle part of the fixed rotating shaft is connected to the lower front end of the adjusting plate, the upper end of the adjusting plate is connected to the drawing plate, the lower rear end of the adjusting plate is connected to the adjusting shaft, push rods are connected to the left and right sides of the adjusting shaft, a connecting shaft is provided at the other end of the push rod, the connecting shaft is connected to both sides of a moving block, a guide plate is connected to the lower side of the moving block, the lower side of the guide plate is connected to the rotating disk, a driven gear ring is provided on the lower side of the rotating disk, drawing pressure plates are provided at the left and right ends of the drawing plate, and a lifting rod is provided at the upper middle part of the drawing pressure plate.

[0008] Preferably, the movable block is provided with a worm gear sleeve, and the worm gear sleeve is provided with a worm.

[0009] Preferably, the worm gear has a worm gear bracket at its front end, the lower end of the worm gear bracket is connected to the rotary disk, and the worm gear has a motor mounting bracket at its rear end.

[0010] Preferably, a pitch motor is provided on the upper side of the motor mounting frame, and the output shaft of the pitch motor is provided with a coupling block, which is connected to the rear end of the worm gear.

[0011] Preferably, a rotating support ring is provided at the lower center of the rotating disk, the rotating support ring is fixed to the rotating disk by a fixing plate, and the middle part of the rotating support ring is connected to the rotating support shaft.

[0012] Preferably, the lower side of the rotating support shaft is located in the middle of the base, and a rotary motor is located on the left side of the base. The output shaft of the rotary motor is connected to the driving gear, and the driving gear meshes with the driven gear ring.

[0013] Preferably, each of the upper and lower ends of the drawing board is provided with a pressure plate fixing seat, the upper end of the pressure plate fixing seat is provided with a spring cover plate, and the inner side of the spring cover plate is provided with a guide block.

[0014] Preferably, the guide block is connected to both ends of the drawing pressure plate, and a spring is provided between the upper side of the guide block and the spring cover plate.

[0015] Preferably, a guide slide is provided on the lower front side of the drawing board, and a drawing paper opening rod is provided between the guide slide and the drawing board.

[0016] A method for using a fixing bracket for construction engineering design drawings, comprising the aforementioned fixing bracket for construction engineering design drawings, wherein the specific operation is as follows: Step S1: The user passes one end of the rolled-up drawing through the bottom of the drawing paper opening rod and aligns it with one edge of the drawing board. Then, the user lifts the lever in the middle of the drawing plate on that side. At this time, the guide blocks connected to both ends of the drawing plate will slide upward in the plate fixing seat and compress the spring located between the upper side of the guide block and the spring cover plate. The edge of the drawing is placed under the lifted drawing plate, ensuring that the edge of the drawing is flat against the surface of the drawing board. Then, the user slowly releases the lever. Under the elastic restoring force of the spring, the guide block moves the drawing plate downward, pressing one edge of the drawing firmly against the drawing board, completing the initial fixation of one side of the drawing. Step S2: Move the paper opening rod along the guide slide to the other side of the drawing board smoothly. During the sliding process, the paper opening rod will apply a uniform tension to the paper, gradually unfolding and flattening the paper to the other side. When the paper is fully unfolded and covers the effective area of ​​the drawing board, lift the paper pressure plate on the other side according to the same operation method as in step S1, and place the other edge of the paper flat under the paper pressure plate and fix it, thereby achieving the flat fixation of the entire paper on the drawing board. Step S3: When it is necessary to adjust the pitch angle of the drawing to adapt to different viewing or drawing needs, start the pitch motor. The output shaft of the pitch motor drives the worm gear to rotate under the support of the worm gear frame and the motor mounting frame through the coupling block. Since the worm gear meshes with the worm sleeve inside the moving block, the rotation of the worm gear will drive the moving block to move linearly in the back and forth direction along the guide plate connected to its lower side. The movement of the moving block drives the push rod to move through the connecting shafts at both ends. The push rod then pushes the adjustment plate to rotate around the fixed rotation shaft on the fixed rotation frame through the adjustment shaft. As the adjustment plate rotates, the drawing board connected to the upper end of the adjustment plate will realize the adjustment of the pitch angle until the required angle is reached, and then turn off the pitch motor. Step S4: If it is necessary to rotate the drawing during the design discussion to facilitate viewing by personnel at different positions, start the rotary motor on the left side of the base. The output shaft of the rotary motor drives the drive gear to rotate. The drive gear meshes with the driven gear ring on the lower side of the rotary disk, thereby driving the rotary disk to rotate around the rotary support shaft through the rotary support. The rotation of the rotary disk will drive the entire drawing fixing plate and related components of the adjustment structure on it to rotate together, realizing the 360-degree rotation function of the drawing. After rotating to the appropriate angle, turn off the rotary motor. Step S5: When it is necessary to replace or remove the drawing, simply lift the lever again to separate the drawing plate from the drawing board, and the drawing can be easily removed from the drawing board.

[0017] (III) Beneficial Effects This invention provides a fixing bracket for construction engineering design drawings and its usage method. It has the following beneficial effects: This support system, by incorporating drawing plates at both ends of the drawing board, along with springs and guide blocks within the plate holders, applies uniform and continuous pressure to the edges of large or flexible drawings. This effectively avoids the loosening issues caused by traditional supports that only clamp the edges. Even during frequent flipping or adjustment of drawings, it maintains a stable clamping position, ensuring the drawings unfold flat and providing designers with a stable foundation for drawing and viewing. The tilt motor in the adjustment mechanism drives a worm gear, worm gear sleeve, and moving block, which in turn rotates a push rod and adjustment plate around a fixed axis, allowing for flexible adjustment of the drawing board's tilt angle. Designers can adjust the drawings to the most comfortable viewing and drawing angle based on their height, sitting posture, or standing habits, significantly reducing visual fatigue from prolonged work and improving work comfort and efficiency.

[0018] This device is based on an improvement of existing equipment, so the improvement cost is relatively low and it will not cause a large amount of existing equipment to be discarded. It ensures the processing effect while reducing the investment in improvement costs, making it suitable for large-scale production. Attached Figure Description

[0019] Figure 1A schematic diagram of the support structure for use in construction engineering design drawings; Figure 2 Side sectional view of the support frame for construction engineering design drawings; Figure 3 Sectional view of BB for fixing brackets in construction engineering design drawings; Figure 4 CC section view of the support frame for construction engineering design drawings; Figure 5 DD sectional view of the support frame for construction engineering design drawings; Figure 6 A sectional view of the support frame EE used in the design drawings for construction projects.

[0020] In the diagram: 1. Drawing fixing plate; 101. Drawing plate; 102. Pressure plate fixing seat; 103. Guide block; 104. Drawing pressure plate; 105. Guide slide plate; 106. Drawing paper opening rod; 107. Spring cover plate; 108. Spring; 109. Lifting rod; 2. Adjustment structure; 201. Rotary disk; 202. Fixed rotating frame; 203. Fixed rotating shaft; 204. Adjusting plate; 205. Adjusting shaft; 20 6. Push rod; 207. Connecting shaft; 208. Moving block; 209. Worm sleeve; 210. Guide plate; 211. Worm; 212. Worm bracket; 213. Motor mounting bracket; 214. Coupling block; 215. Pitch motor; 216. Driven gear ring; 217. Rotary support ring; 218. Fixing plate; 219. Rotary support shaft; 220. Base; 221. Rotary motor; 222. Drive gear. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-6This invention provides a technical solution: a drawing fixing bracket for construction engineering design and its usage method, comprising an adjustment structure 2 and a drawing fixing plate 1. The drawing fixing plate 1 is based on a drawing plate 101 as the main body. Pressure plate fixing seats 102 are provided at the upper and lower ends of both sides of the drawing plate 101. A spring cover plate 107 is provided at the upper end of the pressure plate fixing seat 102. A guide block 103 is provided inside the spring cover plate 107. The guide block 103 is connected to both ends of the drawing pressure plate 104. A spring 108 is provided between the upper side of the guide block 103 and the spring cover plate 107. A guide slide plate 105 is provided at the lower front end of the drawing plate 101. A drawing paper opening rod 106 is provided at the lower front side between 05 and the drawing board 101. The adjustment structure 2 is based on a rotating disk 201. A rotating support ring 217 is provided at the lower middle of the rotating disk 201. The rotating support ring 217 is fixed to the rotating disk 201 by a fixing plate 218. The middle of the rotating support ring 217 is connected to a rotating support shaft 219. The lower side of the rotating support shaft 219 is provided at the middle of the base 220. A rotary motor 221 is provided on the left side of the base 220. The output shaft of the rotary motor 221 is connected to a drive gear 222. The drive gear 222 meshes with a driven gear ring 216. The rotating disk 2... A fixed rotating frame 202 is provided at the upper end of the 01. A fixed rotating shaft 203 is provided on the upper side of the fixed rotating frame 202. The middle part of the fixed rotating shaft 203 is connected to the lower front end of the adjusting plate 204. The upper end of the adjusting plate 204 is connected to the drawing plate 101. The lower rear end of the adjusting plate 204 is connected to the adjusting shaft 205. Push rods 206 are connected to the left and right sides of the adjusting shaft 205. A connecting shaft 207 is provided at the other end of the push rod 206. The connecting shaft 207 is connected to both sides of the moving block 208. A worm gear sleeve 209 is provided inside the moving block 208. A worm gear 211 is provided inside the worm gear sleeve 209. The front end of the worm gear 211 is provided with... A worm gear holder 212 is provided, the lower end of which is connected to a rotating disk 201. A motor mounting bracket 213 is provided at the rear end of the worm gear 211. A pitch motor 215 is provided on the upper side of the motor mounting bracket 213. A coupling block 214 is provided on the output shaft of the pitch motor 215. The coupling block 214 is connected to the rear end of the worm gear 211. A guide plate 210 is connected to the lower side of the moving block 208. The lower side of the guide plate 210 is connected to the rotating disk 201. A driven gear ring 216 is provided on the lower side of the rotating disk 201. Drawing plates 104 are provided at both ends of the drawing plate 101. A lifting rod 109 is provided at the upper middle part of the drawing plate 104.

[0023] A method for using a fixing bracket for construction engineering design drawings, comprising the aforementioned fixing bracket for construction engineering design drawings, wherein the specific operation is as follows: Step S1: The user passes one end of the rolled-up drawing paper under the drawing paper opening rod 106 and aligns it with one edge of the drawing board 101. Then, the user lifts the lifting rod 109 in the middle of the drawing plate 104 on that side. At this time, the guide blocks 103 connected to both ends of the drawing plate 104 slide upward within the plate fixing seat 102 and compress the spring 108 located between the upper side of the guide block 103 and the spring cover plate 107. The edge of the drawing paper is placed under the lifted drawing plate 104, ensuring that the edge of the drawing paper is flat against the surface of the drawing board 101. Then, the lifting rod 109 is slowly released. Under the elastic restoring force of the spring 108, the guide block 103 moves the drawing plate 104 downward, pressing one edge of the drawing paper tightly onto the drawing board 101, completing the initial fixation of one side of the drawing paper.

[0024] Step S2: Move the drawing paper opening lever 106 smoothly along the guide slide plate 105 to the other side of the drawing board 101. During the sliding process, the drawing paper opening lever 106 will apply a uniform tension to the drawing paper, gradually unfolding and flattening the drawing paper to the other side. After the drawing paper is fully unfolded and covers the effective area of ​​the drawing board 101, follow the same operation method as in step S1, lift the drawing pressure plate 104 on the other side, and place the other edge of the drawing paper flatly under the drawing pressure plate 104 and fix it, thereby achieving flat and fixed drawing paper on the drawing board 101.

[0025] Step S3: When the tilt angle of the drawing needs to be adjusted to suit different viewing or drawing requirements, start the tilt motor 215. The output shaft of the tilt motor 215 drives the worm gear 211 to rotate under the support of the worm gear frame 212 and the motor mounting frame 213 via the coupling block 214. Since the worm gear 211 meshes with the worm sleeve 209 inside the moving block 208, the rotation of the worm gear 211 will drive the moving block 208 to move linearly in the back-and-forth direction along the guide plate 210 connected to its lower side. The movement of the moving block 208 drives the push rod 206 to move through the connecting shafts 207 at both ends. The push rod 206 then pushes the adjusting plate 204 to rotate around the fixed rotating shaft 203 on the fixed rotating frame 202 via the adjusting shaft 205. As the adjusting plate 204 rotates, the drawing board 101 connected to the upper end of the adjusting plate 204 will adjust the tilt angle until the required angle is reached, and then the tilt motor 215 will be turned off.

[0026] Step S4: If the drawing needs to be rotated during the design discussion to facilitate viewing by personnel at different positions, start the rotary motor 221 on the left side of the base 220. The output shaft of the rotary motor 221 drives the drive gear 222 to rotate. The drive gear 222 meshes with the driven gear ring 216 on the lower side of the rotating disk 201, thereby driving the rotating disk 201 to rotate around the rotating support shaft 219 via the rotating support ring 217. The rotation of the rotating disk 201 will cause the entire drawing fixing plate 1 and related components of the adjustment structure on it to rotate together, realizing the 360-degree rotation function of the drawing. After rotating to the appropriate angle, turn off the rotary motor 221.

[0027] Step S5: When it is necessary to replace or remove the drawing, simply lift the lever 109 again to separate the drawing plate 104 from the drawing board 101, and the drawing can be easily removed from the drawing board 101.

[0028] In summary, this support system, by incorporating drawing plate clamps at both ends of the drawing board, along with springs and guide blocks within the clamping plate holders, applies uniform and continuous pressure to the edges of large or soft drawings. This effectively avoids the loosening issues caused by traditional supports that only clamp at the edges. Even when frequently flipping or adjusting drawings, it maintains a stable clamping position, ensuring the drawings unfold flat and providing designers with a stable foundation for drawing and viewing. The pitch motor in the adjustment structure drives a worm gear, worm gear sleeve, and moving block, which in turn rotates the push rod and adjustment plate around a fixed axis, allowing for flexible adjustment of the drawing board's pitch angle. Designers can adjust the drawings to the most comfortable viewing and drawing angle based on their height, sitting posture, or standing habits, significantly reducing visual fatigue from prolonged work and improving work comfort and efficiency.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drawing fixing bracket for construction engineering design, comprising an adjustment structure (2) and a drawing fixing plate (1), wherein the drawing fixing plate (1) is based on a drawing plate (101), characterized in that: The adjustment structure (2) is based on a rotating disk (201). A fixed rotating frame (202) is provided on the upper end of the rotating disk (201). A fixed rotating shaft (203) is provided on the upper side of the fixed rotating frame (202). The middle part of the fixed rotating shaft (203) is connected to the lower front end of the adjustment plate (204). The upper end of the adjustment plate (204) is connected to the drawing board (101). The lower rear end of the adjustment plate (204) is connected to the adjustment shaft (205). Push rods (2) are connected to the left and right sides of the adjustment shaft (205). 06), the other end of the push rod (206) is provided with a connecting shaft (207), the connecting shaft (207) is connected to both sides of the moving block (208), the lower side of the moving block (208) is connected with a guide plate (210), the lower side of the guide plate (210) is connected to the rotating disk (201), the lower side of the rotating disk (201) is provided with a driven gear ring (216), the left and right ends of the drawing plate (101) are provided with drawing plates (104), and the upper part of the middle of the drawing plate (104) is provided with a lifting rod (109).

2. The construction engineering design drawing fixing bracket according to claim 1, characterized in that: The movable block (208) is provided with a worm sleeve (209), and the worm sleeve (209) is provided with a worm (211).

3. The construction engineering design drawing fixing bracket according to claim 2, characterized in that: The worm (211) is provided with a worm frame (212) at the front end, the lower end of the worm frame (212) is connected to the rotating disk (201), and the worm (211) is provided with a motor mounting frame (213) at the rear end.

4. The construction engineering design drawing fixing bracket according to claim 3, characterized in that: A pitch motor (215) is provided on the upper side of the motor mounting frame (213). The output shaft of the pitch motor (215) is provided with a coupling block (214), which is connected to the rear end of the worm gear (211).

5. A construction engineering design drawing fixing bracket according to claim 1, characterized in that: A rotating support ring (217) is provided at the lower middle part of the rotating disk (201). The rotating support ring (217) is fixed to the rotating disk (201) by a fixing plate (218). The middle part of the rotating support ring (217) is connected to the rotating support shaft (219).

6. A construction engineering design drawing fixing bracket according to claim 5, characterized in that: The lower side of the rotating support shaft (219) is located in the middle of the base (220). A rotary motor (221) is located on the left side of the base (220). The output shaft of the rotary motor (221) is connected to the drive gear (222). The drive gear (222) meshes with the driven gear ring (216).

7. A fixing bracket for construction engineering design drawings according to claim 1, characterized in that: The drawing board (101) is provided with pressure plate fixing seats (102) at both the upper and lower ends on both sides. A spring cover plate (107) is provided at the upper end of the pressure plate fixing seat (102), and a guide block (103) is provided on the inner side of the spring cover plate (107).

8. A construction engineering design drawing fixing bracket according to claim 7, characterized in that: The guide block (103) is connected to both ends of the drawing pressure plate (104), and a spring (108) is provided between the upper side of the guide block (103) and the spring cover plate (107).

9. A fixing bracket for construction engineering design drawings according to claim 1, characterized in that: A guide slide (105) is provided on the lower front side of the drawing board (101), and a drawing paper opening rod (106) is provided on the lower front side between the guide slide (105) and the drawing board (101).

10. A method for using a fixing bracket for construction engineering design drawings, characterized in that: The construction engineering design drawing fixing bracket as described in claims 1-9 is operated as follows: Step S1: The user passes one end of the rolled-up drawing through the drawing paper opening rod (106) and aligns it with one side edge of the drawing board (101). Then, the user lifts the lifting rod (109) in the middle of the drawing plate (104) on that side. At this time, the guide block (103) connected to both ends of the drawing plate (104) slides upward in the plate fixing seat (102) and compresses the spring (108) located between the upper side of the guide block (103) and the spring cover plate (107). The edge of the drawing is placed under the lifted drawing plate (104) to ensure that the edge of the drawing is flat against the surface of the drawing board (101). Then, the user slowly releases the lifting rod (109). Under the elastic restoring force of the spring (108), the guide block (103) drives the drawing plate (104) to move downward, pressing one side edge of the drawing tightly onto the drawing board (101) to complete the initial fixation of one side of the drawing. Step S2: Move the drawing paper opening rod (106) smoothly along the guide slide (105) to the other side of the drawing board (101). During the sliding process, the drawing paper opening rod (106) will apply a uniform tension to the drawing paper, gradually unfolding and flattening the drawing paper to the other side. When the drawing paper is fully unfolded and covers the effective area of ​​the drawing board (101), lift the drawing plate (104) on the other side according to the same operation method in step S1, and place the other edge of the drawing paper flat under the drawing plate (104) and fix it, so as to achieve the flat fixation of the entire drawing paper on the drawing board (101). Step S3: When it is necessary to adjust the pitch angle of the drawing to adapt to different viewing or drawing needs, start the pitch motor (215). The output shaft of the pitch motor (215) drives the worm (211) to rotate under the support of the worm gear bracket (212) and the motor mounting bracket (213) through the coupling block (214). Since the worm (211) meshes with the worm sleeve (209) inside the moving block (208), the rotation of the worm (211) will drive the moving block (208) along the guide plate (210) connected to its lower side. The moving block (208) moves in a straight line in the forward and backward direction. The movement of the moving block (208) drives the push rod (206) to move through the connecting shafts (207) at both ends. The push rod (206) then pushes the adjusting plate (204) to rotate around the fixed rotating shaft (203) on the fixed rotating frame (202) through the adjusting shaft (205). As the adjusting plate (204) rotates, the drawing board (101) connected to the upper end of the adjusting plate (204) will adjust the pitch angle until the required angle is reached and then the pitch motor (215) is turned off. Step S4: If it is necessary to rotate the drawing during the design discussion to facilitate viewing by personnel at different positions, start the rotary motor (221) on the left side of the base (220). The output shaft of the rotary motor (221) drives the drive gear (222) to rotate. The drive gear (222) meshes with the driven gear ring (216) on the lower side of the rotary disk (201), thereby driving the rotary disk (201) to rotate around the rotary support shaft (219) through the rotary support ring (217). The rotation of the rotary disk (201) will drive the entire drawing fixing plate (1) and related components of the adjustment structure on it to rotate together, realizing the 360-degree rotation function of the drawing. After rotating to the appropriate angle, turn off the rotary motor (221). Step S5: When it is necessary to replace or remove the drawing, simply lift the lever (109) again to separate the drawing plate (104) from the drawing board (101) and the drawing can be easily removed from the drawing board (101).

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