Building 3D printing construction experiment training device

Abstract

The utility model relates to the technical field of building 3D printing, in particular to a building 3D printing construction experiment practical training device which comprises a base, the inner wall of the base is in sliding connection with the outer wall of a vertical adjusting piece, the top of the vertical adjusting piece is fixedly connected with the bottom of a horizontal adjusting piece, and the outer wall of the horizontal adjusting piece is in sliding connection with the inner wall of a printing piece. A hydraulic cylinder pulls a hydraulic rod to move up and down, the hydraulic rod moves up and down to drive a lifting plate to move synchronously under the guidance of a limiting rod, the limiting rod plays a guiding role and also ensures that the lifting plate does not shake in the moving process, and an air cylinder is started to drive a first sliding block to slide in a guiding block through a telescopic rod; the guide block provides a stable sliding rail for the first sliding block, it is ensured that the first sliding block cannot shake in the moving process, the precision of the printing device cannot be reduced due to shaking in the working process, the real building 3D printing process is simulated, and a user is helped to better understand and master the technology.

Description

Technical Field

[0001] The utility model relates to the technical field of building 3D printing, in particular to a building 3D printing construction experimental training device. Background Art

[0002] With the advancement of science and technology and the rapid development of digital manufacturing technology, 3D printing technology has gradually been applied in the construction industry. Traditional construction methods often involve a lot of labor, material waste and a long construction period, while 3D printing construction technology has brought revolutionary changes to the construction industry with its high efficiency, environmental protection and precision. Concrete 3D printing technology, as an important branch, uses specific equipment to stack concrete materials layer by layer to build the required building structure. This technology not only greatly shortens the construction period and reduces material waste, but also can achieve high precision and stability in complex building structures. However, since concrete 3D printing technology is relatively new, the research and development and application of its experimental training device are still in the exploratory stage. In order to cultivate relevant talents and promote technology research and development and application, it is particularly important to establish a special concrete 3D printing construction experimental training device.

[0003] Currently, most of the architectural 3D printing construction experimental training devices on the market are relatively simple, and are prone to shaking when adjusting the height and horizontal position of the printing device. The shaking reduces the printing accuracy and is not convenient for students and practitioners to better understand and master this technology. Utility Model Content

[0004] The purpose of the utility model is to provide a construction 3D printing construction experiment and training device to solve the problem of shaking when adjusting the position and reducing the printing accuracy proposed in the above background technology. To achieve the above purpose, the utility model provides the following technical solution: the construction 3D printing construction experiment and training device includes a base, the inner wall of the base is slidably connected to the outer wall of the vertical adjustment member, the top of the vertical adjustment member is fixedly connected to the bottom of the horizontal adjustment member, and the outer wall of the horizontal adjustment member is slidably connected to the inner wall of the printed part.

[0005] The input end of the printed piece is fixedly connected to the bottom end of the conveying piece, and the bottom of the conveying piece is fixedly connected to the top of the base.

[0006] Preferably, the base consists of four legs, a bottom plate, four supporting columns, a containing box, two transverse plates, two longitudinal plates and four reinforced triangular plates, and the tops of the four legs are fixedly connected to the bottom of the bottom plate, the top of the bottom plate is respectively fixedly connected to the bottoms of the four supporting columns, and the four legs and the four supporting columns are symmetrically arranged with the center line of the bottom plate as the axis, the top of the bottom plate is movably abutted against the bottom of the containing box, and the tops of the two supporting columns near the back are respectively fixedly connected to the bottom of one of the transverse plates near both sides, the bottom of the other transverse plate near both sides is fixedly connected to the tops of the two supporting columns near the front, and the back and front of the two transverse plates near both sides are respectively fixedly connected to the front and back of the two longitudinal plates, the bottoms of the two longitudinal plates near the front and back are respectively fixedly connected to the tops of the four reinforced triangular plates, and the front and back sides of the four reinforced triangular plates are respectively fixedly connected to the back and front of the four support columns, and the four reinforced triangular plates are symmetrically arranged with the center line of the bottom plate as the axis.

[0007] Preferably, the vertical adjustment member includes two sliding plates, two hydraulic cylinders, four limit rods, two hydraulic rods and two lifting plates, and one sliding plate, one hydraulic cylinder, two limit rods, one hydraulic rod and one lifting plate form a group, the top of each group of the sliding plates is fixedly connected to the bottom of the hydraulic cylinder, and the output end of each group of hydraulic cylinders is fixedly connected to the top of the hydraulic rod, the bottom end of each group of the hydraulic rods is fixedly connected to the top of the lifting plate away from both sides, and the inner wall of each group of lifting plates is slidably connected to the outer walls of the two limit rods away from both ends, the bottom of each group of the sliding plates near both sides is respectively fixedly connected to the top of the two limit rods, and each group of sliding plates, hydraulic cylinders, limit rods, hydraulic rods and lifting plates are symmetrically arranged with the center line of the bottom plate as the axis, the bottom ends of the four limit rods are fixedly connected to the top of the bottom plate, and the outer walls of the two sliding plates near both sides are slidably connected to the inner walls of the two longitudinal plates.

[0008] Preferably, the horizontal adjustment member is composed of two guide blocks, a first sliding block, a motor, a connecting rod, a limiting column, a second sliding block, a cylinder and a telescopic rod, and the inner walls of the two guide blocks are slidably connected to the outer walls of the first sliding block and the second sliding block respectively, the inner wall of the first sliding block is fixedly connected to the outer wall of the motor, and the output end of the motor is fixedly connected to one end of the connecting rod, the inner wall of the connecting rod near the other end is fixedly connected to the outer wall of the limiting column near the back side, and the outer wall of the limiting column near the front side is rotatably connected to the inner wall of the second sliding block, the two guide blocks are divided into front and back groups by the horizontal center line of the bottom plate, the inner wall of the guide block near the back side is fixedly connected to the outer wall of the cylinder, and the output end of the cylinder is fixedly connected to one end of the telescopic rod, the other end of the telescopic rod is fixedly connected to the outer side wall of the first sliding block, and the bottoms of the two guide blocks are respectively fixedly connected to the tops of the two lifting plates.

[0009] Preferably, the printed part includes a 3D printer body and a print head, and the inner wall of the 3D printer body close to the bottom is threadedly connected to the outer wall of the print head, and the inner wall of the 3D printer body away from the bottom is slidably connected to the outer walls of the connecting rod away from both ends.

[0010] Preferably, the conveying member is composed of two support plates, a connecting plate, a connecting column, a storage barrel, a feed pipe, a discharge pipe and a control valve, and the tops of the two support plates are respectively fixedly connected to the bottoms of the connecting plates close to both sides, the bottoms of the connecting plates away from both sides are fixedly connected to the tops of the connecting columns, and the bottoms of the connecting columns are fixedly connected to the tops of the storage barrels, the inner top wall of the storage barrel is fixedly connected to the bottom end of the feed pipe, and the inner bottom wall of the storage barrel is fixedly connected to the top of the discharge pipe, the inner wall of the discharge pipe is fixedly connected to the outer wall of the control valve, and the bottoms of the two support plates are respectively fixedly connected to the tops of the two longitudinal plates, and the bottom end of the discharge pipe is fixedly connected to the input end of the 3D printer body.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, the hydraulic cylinder is started, and the hydraulic cylinder pulls the hydraulic rod to move up and down. The up and down movement of the hydraulic rod drives the lifting plate to move synchronously under the guidance of the limit rod. The limit rod not only plays a guiding role, but also ensures that the lifting plate does not shake during the movement. The starting motor drives the connecting rod and the limit column to rotate synchronously. The limit column ensures the stability of the connecting rod during rotation. The cylinder is started to drive the first sliding block to slide in the guide block through the telescopic rod. The guide block provides a stable sliding track for the first sliding block and the second sliding block, ensuring that they do not deviate from the direction and shake during the movement, thereby maintaining the stability of the structure, so that the printing device will not reduce the accuracy due to shaking during work, and can simulate the real architectural 3D printing process to help students and practitioners better understand and master this technology.

[0013] In the utility model, the storage box can collect materials dropped during the printing process, and the print heads of different sizes can be easily replaced through the thread. The feed pipe adds an appropriate amount of raw materials into the storage barrel for continuous printing. When the 3D printer body needs raw materials, the control valve is opened, and the raw materials in the storage barrel flow into the 3D printer body through the discharge pipe under the action of gravity. By adjusting the opening and closing degree of the control valve, the flow rate and speed of the raw materials can be controlled, which is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3It is an exploded view of the utility model.

[0017] In the figure: 1. base; 101. four legs; 102. bottom plate; 103. four support columns; 104. containing box; 105. two horizontal plates; 106. two vertical plates; 107. four reinforcing triangle plates; 2. vertical adjustment member; 201. two sliding plates; 202. two hydraulic cylinders; 203. four limit rods; 204. two hydraulic rods; 205. two lifting plates; 3. horizontal adjustment member; 301. two guide blocks; 302, first sliding block; 303, motor; 304, connecting rod; 305, limiting column; 306, second sliding block; 307, cylinder; 308, telescopic rod; 4, printing part; 401, 3D printing body; 402, printing nozzle; 5, conveying part; 501, two supporting plates; 502, connecting plate; 503, connecting column; 504, storage bucket; 505, feeding pipe; 506, discharging pipe; 507, control valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3 The utility model provides a technical solution: a building 3D printing construction experiment and training device, including a base 1, the inner wall of the base 1 is slidably connected to the outer wall of a vertical adjustment member 2, the top of the vertical adjustment member 2 is fixedly connected to the bottom of a horizontal adjustment member 3, and the outer wall of the horizontal adjustment member 3 is slidably connected to the inner wall of a printing member 4.

[0020] The input end of the print piece 4 is fixedly connected to the bottom end of the conveying member 5 , and the bottom of the conveying member 5 is fixedly connected to the top of the base 1 .

[0021] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the base 1 is composed of four legs 101, a bottom plate 102, four support columns 103, a storage box 104, two horizontal plates 105, two vertical plates 106 and four reinforced triangular plates 107, and the tops of the four legs 101 are fixedly connected to the bottom of the bottom plate 102, the tops of the bottom plate 102 are respectively fixedly connected to the bottoms of the four support columns 103, and the four legs 101 and the four support columns 103 are symmetrically arranged with the center line of the bottom plate 102 as the axis, the top of the bottom plate 102 is movably abutted against the bottom of the storage box 104, and the tops of the two support columns 103 near the back are respectively fixedly connected to the bottom of one of the horizontal plates 105 near both sides, and the bottom of the other horizontal plate 105 near both sides is fixedly connected to the tops of the two support columns 103 near the front. The back and front sides of the two horizontal plates 105 are fixedly connected to the front and back sides of the two vertical plates 106 respectively, the bottoms of the two vertical plates 106 near the front and back sides are fixedly connected to the tops of four reinforced triangular plates 107 respectively, and the front and back sides of the four reinforced triangular plates 107 are fixedly connected to the back and front sides of the four support columns 103 respectively, the four reinforced triangular plates 107 are symmetrically arranged with the center line of the base plate 102 as the axis, and the stability of the device on the ground is ensured by the support feet 101, the support columns 103, the horizontal plates 105 and the vertical plates 106 form a rigid frame, and the reinforced triangular plates 107 further enhance the stability and carrying capacity of the device through their triangular structure, and the storage box 104 can collect materials dropped during the printing process for easy use.

[0022] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the vertical adjustment member 2 includes two sliding plates 201, two hydraulic cylinders 202, four limiting rods 203, two hydraulic rods 204 and two lifting plates 205, and one sliding plate 201, one hydraulic cylinder 202, two limiting rods 203, one hydraulic rod 204 and one lifting plate 205 form a group, the top of each group of sliding plates 201 is fixedly connected to the bottom of the hydraulic cylinder 202, and the output end of each group of hydraulic cylinder 202 is fixedly connected to the top of the hydraulic rod 204, the bottom end of each group of hydraulic rod 204 is fixedly connected to the top of the lifting plate 205 away from both sides, and the inner wall of each group of lifting plates 205 is slidably connected to the outer wall of the two limiting rods 203 away from both ends, and the bottom of each group of sliding plates 201 near both sides is respectively connected to the two limiting rods 203 The top of the bottom plate 102 is fixedly connected, and each group of sliding plates 201, hydraulic cylinders 202, limiting rods 203, hydraulic rods 204 and lifting plates 205 are symmetrically arranged with the center line of the bottom plate 102 as the axis. The bottom ends of the four limiting rods 203 are fixedly connected to the top of the bottom plate 102, and the outer walls of the two sliding plates 201 close to the two sides are slidably connected to the inner walls of the two longitudinal plates 106 respectively. When the height needs to be adjusted, the hydraulic cylinder 202 is started, and the hydraulic cylinder 202 pulls the hydraulic rod 204 to move up and down. The up and down movement of the hydraulic rod 204 drives the lifting plate 205 to move synchronously under the guidance of the limiting rods 203. The limiting rods 203 not only play a guiding role, but also ensure that the lifting plate 205 will not shake during the movement, thereby maintaining the stability of the structure and improving the accuracy of the printing device.

[0023] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the horizontal adjustment member 3 is composed of two guide blocks 301, a first sliding block 302, a motor 303, a connecting rod 304, a limiting column 305, a second sliding block 306, a cylinder 307 and a telescopic rod 308, and the inner walls of the two guide blocks 301 are slidably connected to the outer walls of the first sliding block 302 and the second sliding block 306 respectively, the inner wall of the first sliding block 302 is fixedly connected to the outer wall of the motor 303, and the output end of the motor 303 is fixedly connected to one end of the connecting rod 304, the inner wall of the connecting rod 304 near the other end is fixedly connected to the outer wall of the limiting column 305 near the back side, and the outer wall of the limiting column 305 near the front side is rotatably connected to the inner wall of the second sliding block 306, and the two guide blocks 301 are divided into two groups, front and back, by the horizontal center line of the base plate 102. The inner wall of the near-back guide block 301 is fixedly connected to the outer wall of the cylinder 307, and the output end of the cylinder 307 is fixedly connected to one end of the telescopic rod 308, the other end of the telescopic rod 308 is fixedly connected to the outer side wall of the first sliding block 302, and the bottoms of the two guide blocks 301 are respectively fixedly connected to the tops of the two lifting plates 205, and the starting motor 303 drives the connecting rod 304 and the limiting column 305 to rotate synchronously, and the limiting column 305 ensures the stability of the connecting rod 304 during rotation. The cylinder 307 is started and drives the first sliding block 302 to slide in the guide block 301 through the telescopic rod 308. The guide block 301 provides a stable sliding track for the first sliding block 302 and the second sliding block 306, ensuring that they will not deviate from the direction and shake during the movement, thereby improving the accuracy of the printing device.

[0024] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the print part 4 includes a 3D printer body 401 and a print head 402, and the inner wall of the 3D printer body 401 near the bottom is threadedly connected to the outer wall of the print head 402, and the inner wall of the 3D printer body 401 away from the bottom is slidably connected to the outer wall of the connecting rod 304 away from both ends. The print heads 402 of different sizes can be easily replaced through the threads. The 3D printer body 401 can slide on the connecting rod 304 to achieve longitudinal movement, and the connecting rod 304 can slide in the guide block 301 through the first sliding block 302 and the second sliding block 306 to achieve lateral movement. The motor 303 is started to drive the connecting rod 304 to rotate, and the connecting rod 304 then drives the 3D printer body 401 and the print head 402 to rotate, and the angle of the print head 402 can be adjusted, which is convenient for people to use.

[0025] In this embodiment, Figure 1 , Figure 2 and Figure 3As shown, the conveying member 5 is composed of two support plates 501, a connecting plate 502, a connecting column 503, a storage barrel 504, a feed pipe 505, a discharge pipe 506 and a control valve 507, and the tops of the two support plates 501 are respectively fixedly connected to the bottoms of the connecting plates 502 close to both sides, the bottoms of the connecting plates 502 away from both sides are fixedly connected to the tops of the connecting columns 503, and the bottoms of the connecting columns 503 are fixedly connected to the tops of the storage barrels 504, the inner top wall of the storage barrels 504 is fixedly connected to the bottom end of the feed pipe 505, and the inner bottom wall of the storage barrels 504 is fixedly connected to the top of the discharge pipe 506, and the discharge pipe 507 is fixedly connected to the top of the discharge pipe 506. The inner wall of the storage barrel 504 is fixedly connected to the outer wall of the control valve 507, and the bottoms of the two support plates 501 are fixedly connected to the tops of the two longitudinal plates 106 respectively. The bottom end of the discharge pipe 506 is fixedly connected to the input end of the 3D printer body 401. An appropriate amount of raw materials is added to the storage barrel 504 through the feed pipe 505 for continuous printing. When the 3D printer body 401 needs raw materials, the control valve 507 is opened, and the raw materials in the storage barrel 504 flow into the 3D printer body 401 through the discharge pipe 506 under the action of gravity. By adjusting the opening and closing degree of the control valve 507, the flow rate and speed of the raw materials can be controlled.

[0026] The use method and advantages of the utility model: When the building 3D printing construction experimental training device is working, the working process is as follows:

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the hydraulic cylinder 202 is started, and the hydraulic cylinder 202 pulls the hydraulic rod 204 to move up and down. The up and down movement of the hydraulic rod 204 drives the lifting plate 205 to move synchronously under the guidance of the limit rod 203. The limit rod 203 not only plays a guiding role, but also ensures that the lifting plate 205 does not shake during the movement. The motor 303 is started to drive the connecting rod 304 and the limit column 305 to rotate synchronously. The limit column 305 ensures the stability of the connecting rod 304 during rotation. The cylinder 307 is started to drive the first sliding block 302 to slide in the guide block 301 through the telescopic rod 308. The guide block 301 provides a stable sliding track for the first sliding block 302 and the second sliding block 306 to ensure that they do not deviate from the direction and shake during the movement, thereby maintaining the stability of the structure, so that the printing device will not reduce the accuracy due to shaking during operation, and can simulate the real architectural 3D printing process to help students and practitioners better understand and master this technology. The support legs 101 ensure the stability of the device on the ground, the support columns 103, the horizontal plates 105 and the vertical plates 106 form a rigid frame, and the reinforcing triangle plate 107 further enhances the stability and carrying capacity of the device through its triangular structure. The storage box 104 can collect materials dropped during the printing process, and the print heads 402 of different sizes can be easily replaced through the threads. A proper amount of raw materials is added to the storage barrel 504 through the feed pipe 505 for continuous printing. When the 3D printer body 401 needs raw materials, the control valve 507 is opened, and the raw materials in the storage barrel 504 flow into the 3D printer body 401 through the discharge pipe 506 under the action of gravity. By adjusting the opening and closing degree of the control valve 507, the flow rate and speed of the raw materials can be controlled, which is convenient for people to use.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A building 3D printing construction experimental training device, comprising a base (1), Features: The inner wall of the base (1) is slidably connected to the outer wall of the vertical adjustment member (2), the top of the vertical adjustment member (2) is fixedly connected to the bottom of the horizontal adjustment member (3), and the outer wall of the horizontal adjustment member (3) is slidably connected to the inner wall of the printing member (4); The input end of the printed piece (4) is fixedly connected to the bottom end of the conveying piece (5), and the bottom of the conveying piece (5) is fixedly connected to the top of the base (1).

2. The building 3D printing construction experimental training device according to claim 1, Features: The base (1) is composed of four supporting legs (101), a bottom plate (102), four supporting columns (103), a containing box (104), two horizontal plates (105), two vertical plates (106) and four reinforcing triangular plates (107), and the tops of the four supporting legs (101) are fixedly connected to the bottom of the bottom plate (102), the top of the bottom plate (102) is respectively fixedly connected to the bottoms of the four supporting columns (103), and the four supporting legs (101) and the four supporting columns (103) are symmetrically arranged with the center line of the bottom plate (102) as the axis, the top of the bottom plate (102) is movably abutted against the bottom of the containing box (104), and the tops of the two supporting columns (103) close to the back are The bottoms of the two longitudinal plates (106) are respectively fixedly connected to the bottoms of the two transverse plates (105) near both sides, the bottoms of the other transverse plate (105) near both sides are fixedly connected to the tops of the two support columns (103) near the front, and the backs and fronts of the two transverse plates (105) near both sides are respectively fixedly connected to the fronts and backs of the two longitudinal plates (106), the bottoms of the two longitudinal plates (106) near the front and back sides are respectively fixedly connected to the tops of the four reinforcing triangular plates (107), and the fronts and backs of the four reinforcing triangular plates (107) are respectively fixedly connected to the backs and fronts of the four support columns (103), and the four reinforcing triangular plates (107) are symmetrically arranged with the center line of the bottom plate (102) as the axis.

3. The building 3D printing construction experimental training device according to claim 2, Features: The vertical adjustment member (2) comprises two sliding plates (201), two hydraulic cylinders (202), four limiting rods (203), two hydraulic rods (204) and two lifting plates (205), wherein one sliding plate (201), one hydraulic cylinder (202), two limiting rods (203), one hydraulic rod (204) and one lifting plate (205) form a group, the top of each group of sliding plates (201) is fixedly connected to the bottom of the hydraulic cylinder (202), the output end of each group of hydraulic cylinders (202) is fixedly connected to the top of the hydraulic rod (204), and the bottom end of each group of hydraulic rods (204) is connected to the lifting plate (205) away from the sides. The top is fixedly connected, and the inner wall of each group of lifting plates (205) is slidably connected to the outer walls of the two limiting rods (203) away from the two ends, and the bottom of each group of sliding plates (201) close to the two sides is fixedly connected to the top of the two limiting rods (203), and each group of sliding plates (201), hydraulic cylinders (202), limiting rods (203), hydraulic rods (204) and lifting plates (205) are symmetrically arranged with the center line of the bottom plate (102) as the axis, and the bottom ends of the four limiting rods (203) are fixedly connected to the top of the bottom plate (102), and the outer walls of the two sliding plates (201) close to the two sides are slidably connected to the inner walls of the two longitudinal plates (106).

4. The building 3D printing construction experimental training device according to claim 3, Features: The horizontal adjustment member (3) is composed of two guide blocks (301), a first sliding block (302), a motor (303), a connecting rod (304), a limiting column (305), a second sliding block (306), a cylinder (307) and a telescopic rod (308), and the inner walls of the two guide blocks (301) are slidably connected to the outer walls of the first sliding block (302) and the second sliding block (306) respectively, the inner wall of the first sliding block (302) is fixedly connected to the outer wall of the motor (303), and the output end of the motor (303) is fixedly connected to one end of the connecting rod (304), and the inner wall of the connecting rod (304) near the other end is fixedly connected to the limiting column (305). 5) The outer wall near the back side is fixedly connected, and the outer wall of the limiting column (305) near the front side is rotatably connected to the inner wall of the second sliding block (306), the two guide blocks (301) are divided into two groups, the front and the back, by the horizontal center line of the bottom plate (102), the inner wall of the guide block (301) near the back side is fixedly connected to the outer wall of the cylinder (307), and the output end of the cylinder (307) is fixedly connected to one end of the telescopic rod (308), the other end of the telescopic rod (308) is fixedly connected to the outer side wall of the first sliding block (302), and the bottoms of the two guide blocks (301) are respectively fixedly connected to the tops of the two lifting plates (205).

5. The building 3D printing construction experimental training device according to claim 4, Features: The printing piece (4) comprises a 3D printing body (401) and a printing nozzle (402), wherein the inner wall of the 3D printing body (401) close to the bottom is threadedly connected to the outer wall of the printing nozzle (402), and the inner wall of the 3D printing body (401) away from the bottom is slidably connected to the outer walls away from both ends of the connecting rod (304).

6. The building 3D printing construction experimental training device according to claim 5, Features: The conveying member (5) is composed of two support plates (501), a connecting plate (502), a connecting column (503), a storage bucket (504), a feeding pipe (505), a discharging pipe (506) and a control valve (507), and the tops of the two support plates (501) are respectively fixedly connected to the bottoms of the connecting plates (502) close to both sides, the bottoms of the connecting plates (502) away from both sides are fixedly connected to the tops of the connecting columns (503), and the bottoms of the connecting columns (503) are fixedly connected to the storage bucket (504). ), the inner top wall of the storage bucket (504) is fixedly connected to the bottom end of the feed pipe (505), and the inner bottom wall of the storage bucket (504) is fixedly connected to the top of the discharge pipe (506), the inner wall of the discharge pipe (506) is fixedly connected to the outer wall of the control valve (507), and the bottoms of the two support plates (501) are respectively fixedly connected to the tops of the two longitudinal plates (106), and the bottom end of the discharge pipe (506) is fixedly connected to the input end of the 3D printer body (401).

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