A 3D printing device for tower construction

Abstract

The application relates to the technical field of building equipment, and discloses a 3D printing device for tower type building engineering, which comprises a protection frame used for isolating a building area; a stock bin part arranged on the protection frame and used for preparing slurry; a concrete printing unit installed on the protection frame and communicated with the stock bin part and used for printing a building in the building area; and a plurality of gas injection units uniformly arranged on the stock bin part and used for filling nitrogen into the stock bin part so that the slurry is mixed with the nitrogen. The device can make the gas axially discharged from the gas injection pipe, so that the gas can be located in the slurry. After the printing work is completed, the gas can overflow from the slurry, so that the slurry can be protected, the admixture in the slurry is prevented from reacting with industrial waste gas, the slurry is prevented from solidifying, the unstable interlayer adhesion is prevented from occurring, and the smooth building 3D printing work is ensured.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, specifically a 3D printing device for tower building projects. Background Technology

[0002] Tower crane 3D printing equipment is an intelligent piece of equipment that integrates tower crane and 3D printing technology, operating based on the principle of layer-by-layer stacking. The equipment consists of a control system, a material system, a motor system, and a printing system. It uses a BIM model to analyze and plan the path, and utilizes a high-precision nozzle to extrude material layer by layer to form the final product.

[0003] Chinese patent application CN118087872A discloses a concrete printer, including a printing robotic arm and a movable base. The printing robotic arm is equipped with a print head. The movable base includes a moving component, a track component, and a balancing component. The printing robotic arm is mounted on the balancing component, which is mounted on the track component. The track component drives the printing robotic arm to move along a first direction. The track component is mounted on the moving component, which drives both the track component and the printing robotic arm to move along the first direction.

[0004] However, existing printing equipment still has some problems. During the printing process, since the building area is in a relatively open space, and water-reducing agents, retarders and other admixtures are often added to the printed concrete, if there is industrial waste gas (such as sulfides and nitrogen oxides) in the construction environment, it will react chemically with the admixtures, causing a sudden change in the solidification characteristics of the slurry. As a result, the slurry between the printed layers cannot adhere well, leading to the failure of the printing work.

[0005] Therefore, how to complete the printing of buildings is a problem that needs to be solved. Summary of the Invention

[0006] This invention provides a 3D printing device for tower-type building engineering to solve the above-mentioned problems existing in the prior art.

[0007] A 3D printing device for tower building engineering includes:

[0008] Protective frames are used to isolate building areas;

[0009] The hopper section, located on the protective frame, is used for slurry preparation;

[0010] A concrete printing unit is installed on the protective frame and connected to the hopper section, and is used to print buildings in the construction area;

[0011] Multiple gas injection units are evenly arranged on the silo section to inject nitrogen into the silo section, thereby mixing the slurry with nitrogen.

[0012] The air injection unit includes a housing fixedly connected to the hopper section, a drive assembly disposed in the housing, an air injection pipe connected to the housing, and a plurality of air outlets evenly disposed on the air injection pipe;

[0013] The gas injection pipe is equipped with a gas injection nozzle; the operation of the drive component enables nitrogen gas to be discharged axially from the gas injection pipe or from the gas outlet.

[0014] Furthermore, the drive assembly includes a drive motor fixedly mounted on the housing, a transmission part connected to the output end of the drive motor, a third gear connected to the transmission part, a drive shaft passing through the third gear, a limiting ring sleeved on the drive shaft, a bracket fixedly mounted on the housing, a return spring sleeved on the drive shaft and connected to the bracket, and a limiting block disposed at one end of the drive shaft and abutting against the air injection pipe.

[0015] The drive shaft is located in the air injection pipe, and the drive shaft is provided with an air delivery channel in the circumferential direction for guiding the airflow.

[0016] Furthermore, the transmission unit includes a drive disc connected to the output end of the drive motor, a rocker arm movably connected to the drive disc, and a movable rod movably connected to the rocker arm and disposed in the housing;

[0017] The connection point between the drive disk and the rocker arm is the non-central region of the drive disk;

[0018] The housing is provided with a limiting chamber for placing the movable rod.

[0019] Furthermore, the transmission unit includes a first gear sleeved on the output end of the drive motor, a first transmission shaft movably disposed on the housing, a transmission gear and a first bevel gear respectively sleeved on the first transmission shaft, a second transmission shaft movably disposed on the housing, and a second bevel gear and a second gear symmetrically disposed on the second transmission shaft.

[0020] The second gear meshes with the third gear, and the first bevel gear meshes with the second bevel gear;

[0021] The first gear meshes with the transmission gear.

[0022] Furthermore, the concrete printing unit includes a lead screw linear assembly arranged along the height direction of the protective frame, three linear slide rails arranged on the protective frame, movable arms respectively arranged on the lead screw linear assembly and the linear slide rails, an adjustment plate for connecting the movable arms, and a nozzle arranged on the adjustment plate.

[0023] The three linear guide rails are arranged in a U-shape on the protective frame.

[0024] Furthermore, the movable arm includes a movable seat disposed on the lead screw linear assembly, a first connecting arm connected to the movable seat, a second connecting arm movably connected to the first connecting arm, and two rotary motors respectively disposed between the movable seat and the first connecting arm and between the first connecting arm and the second connecting arm.

[0025] The second connecting arm is movably connected to the adjusting plate;

[0026] The length and width of the first connecting arm connected to the lead screw linear assembly are parallel to the top surface of the protective frame, while the length and width of the first connecting arm connected to the linear slide rail are at an angle to the top surface of the protective frame.

[0027] Furthermore, the nozzle is also fitted with two opening units and air nozzles respectively disposed on the opening units;

[0028] Two opening units are arranged in a cross configuration. In one opening unit, the direction of gas ejection from the nozzle is at a predetermined angle to the direction of slurry ejection from the nozzle. In the other opening unit, the direction of gas ejection from the nozzle is opposite to the direction of slurry ejection from the nozzle.

[0029] Furthermore, the opening unit includes two hinge seats disposed on the nozzle, a second connecting rod movably connected to one of the hinge seats, a third connecting rod movably connected to the other hinge seat, and a limiting groove formed on the third connecting rod;

[0030] The second connecting rod has a limiting protrusion at one end, the limiting protrusion is located in the limiting groove and can move in the limiting groove, and the jet nozzle is set on the third connecting rod.

[0031] Furthermore, the adjustment plate is also provided with a scraping unit;

[0032] The scraping unit includes a mounting base fixedly mounted on the adjustment plate, a rotary motor fixedly mounted on the mounting base, and an intermittent component connected to the output end of the rotary motor;

[0033] The intermittent assembly includes a rotating disk connected to the output end of the rotating motor, a support disk sleeved on the output end of the rotating motor, a rotating ring sleeved on the support disk and movably connected to the support disk, a plurality of first connecting rods movably connected to the rotating ring, and a hook movably connected to the rotating disk.

[0034] The first connecting rod is movably connected to the hook claw, the side of the rotating disk is provided with a through hole for the hook claw to pass through, and the support disk is fixedly connected to the mounting base;

[0035] The output end of the rotating motor is located at a non-center position on the support disk, while the output end of the rotating motor is located at the center position on the rotating disk.

[0036] Furthermore, there are multiple intermittent components, each disposed on the output end of the rotating motor. Bearings are provided between the output end of the rotating motor and the support plate, as well as between the support plate and the rotating ring, so that the support plate will not move with the movement of the rotating motor.

[0037] Beneficial Effects: This invention discloses a 3D printing device for tower-type building engineering. In order to complete the printing work of the building and avoid the sudden change in the solidification characteristics of the slurry caused by the reaction between industrial waste gas and additives in the slurry, the device is equipped with a gas injection unit. The gas injection end of the gas injection unit is inserted into the slurry. At this time, the movement of the air pump and the drive component not only makes the drive shaft rotate, but also drives the air supply channel on it to move. Since the air supply channel has a spiral structure, it can be intermittently connected to the air outlet to complete the exhaust work. At the same time, under the operation of the drive component, the gas can also be discharged axially from the gas injection pipe, so that the gas can be located in the slurry. After the printing work is completed, the gas can overflow from the slurry, thereby protecting the slurry and preventing the additives in the slurry from reacting with the industrial waste gas, causing the slurry to solidify and resulting in unstable interlayer adhesion, thus ensuring the smooth progress of the 3D printing work of the building. Attached Figure Description

[0038] Figure 1 This is a structural schematic diagram of a 3D printing device for tower-type building engineering according to the present invention;

[0039] Figure 2 This is a schematic diagram of the movable arm structure of the present invention;

[0040] Figure 3 This is a schematic diagram of the gas injection unit structure of the present invention;

[0041] Figure 4 This is a schematic diagram of the internal structure of the gas injection unit of the present invention;

[0042] Figure 5 This is a schematic diagram of the drive shaft structure of the present invention;

[0043] Figure 6 This is a schematic diagram of the opening unit structure of the present invention;

[0044] Figure 7 This is a schematic diagram of the limiting groove structure of the present invention;

[0045] Figure 8 This is a schematic diagram of the scraping unit structure of the present invention;

[0046] Figure 9 This is a schematic diagram of the rotating disk structure of the present invention;

[0047] Figure 10 This is a schematic diagram of the intermittent component structure of the present invention;

[0048] Figure 11 This is a schematic diagram of the first connecting rod structure of the present invention.

[0049] Reference numerals: 1. Protective frame; 2. Hopper section; 3. Concrete printing unit; 31. Lead screw linear assembly; 32. Movable arm; 321. First connecting arm; 322. Second connecting arm; 323. Rotary motor; 324. Movable seat; 33. Adjusting plate; 34. Nozzle; 35. Linear slide rail; 4. Air injection unit; 41. Housing; 42. Air injection pipe; 43. Air outlet; 44. Drive assembly; 441. Drive motor; 442. First gear; 443. Transmission gear; 444. First transmission shaft; 445. First bevel gear; 446. Second bevel gear; 4 47. Second drive shaft; 448. Second gear; 449. Third gear; 4410. Drive shaft; 4411. Limiting ring; 4412. Bracket; 4413. Return spring; 4414. Drive disc; 4415. Rocker arm; 4416. Movable rod; 5. Scraping unit; 51. Mounting base; 52. Rotating motor; 53. Intermittent assembly; 531. Rotating disc; 532. Claw; 533. First connecting rod; 534. Rotating ring; 535. Support disc; 6. Opening unit; 61. Hinge seat; 62. Second connecting rod; 63. Third connecting rod; 64. Limiting groove. Detailed Implementation

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0053] This invention discloses a 3D printing device for tower-type building engineering, with reference to Figures 1-11 ,include:

[0054] A protective frame 1 is used to isolate the building area; a hopper 2 is mounted on the protective frame 1 and used for slurry preparation; a concrete printing unit 3 is mounted on the protective frame 1 and communicates with the hopper 2, used for printing buildings within the building area; multiple air injection units 4 are evenly arranged on the hopper 2 to inject nitrogen into the hopper 2, thereby mixing the slurry with nitrogen; each air injection unit 4 includes a housing 41 fixedly connected to the hopper 2, a drive assembly 44 disposed in the housing 41, an air injection pipe 42 connected to the housing 41, and multiple air outlets 43 evenly arranged on the air injection pipe 42; the air injection pipe 42 is provided with an air injection nozzle; the operation of the drive assembly 44 enables... Nitrogen gas can be discharged axially from the injection pipe 42 or from the outlet 43. The device is equipped with an injection unit 4, and the injection end of the injection unit 4 is inserted into the slurry. At this time, the movement of the air pump and the drive component 44 can not only make the drive shaft 4410 rotate, but also drive the air supply channel on it to move. Since the air supply channel has a spiral structure, it can be intermittently connected to the outlet 43 to complete the exhaust work. At the same time, under the operation of the drive component 44, the gas can also be discharged axially from the injection pipe 42, so that the gas can be located in the slurry. After the printing work is completed, the gas can overflow from the slurry, thereby protecting the slurry and preventing the additives in the slurry from reacting with the industrial waste gas, ensuring the smooth progress of the 3D printing work of the building.

[0055] The drive assembly 44 includes a drive motor 441 fixedly mounted on the housing 41, a transmission part connected to the output end of the drive motor 441, a third gear 449 connected to the transmission part, a drive shaft 4410 passing through the third gear 449, a limiting ring 4411 sleeved on the drive shaft 4410, a bracket 4412 fixedly mounted on the housing 41, a return spring 4413 sleeved on the drive shaft 4410 and connected to the bracket 4412, and a limiting block disposed at one end of the drive shaft 4410 and abutting against the air injection pipe 42; the drive shaft 4410 is located in the air injection pipe 42, and the drive shaft 4410 is provided with an air delivery channel in the circumferential direction for guiding airflow;

[0056] When air injection is required, the drive motor 441 starts working. The moving drive motor 441 drives the transmission unit to move, thereby driving the third gear 449 to rotate. The moving third gear 449 then drives the drive shaft 4410 to rotate, thereby changing the position of the air supply channel on the drive shaft 4410 so that it can be discharged from different air injection ports on the air injection pipe 42, thus being injected into the slurry. At the same time, in conjunction with the work of the hopper 2, the slurry can be stirred and mixed. After the stirring work is completed, the gas can be transported with the slurry to the nozzle 34 for 3D printing. After the slurry injection work is completed, the gas in the slurry can be discharged, which protects the slurry and prevents the slurry from contacting industrial waste gas, preventing the slurry from solidifying and causing the failure of the slurry layer adhesion.

[0057] Compared to traditional fixed gas injection modes, this structure can flexibly switch the gas injection position and airflow path according to the slurry flow state and printing conditions, ensuring that inert gas is evenly dispersed inside the slurry, forming a stable gas isolation layer and blocking the contact channel between industrial waste gas and slurry. On the one hand, this device improves the homogeneity of the slurry through airflow agitation, avoiding aggregate sedimentation; on the other hand, the gas retained in the slurry continues to play an isolation role during the printing stage, preventing uncured slurry from reacting with external corrosive gases such as sulfides, thus solving the technical pain point of interlayer bonding failure.

[0058] The transmission unit includes a drive disk 4414 connected to the output end of the drive motor 441, a rocker arm 4415 movably connected to the drive disk 4414, and a movable rod 4416 movably connected to the rocker arm 4415 and disposed in the housing 41. The connection position between the drive disk 4414 and the rocker arm 4415 is a non-central region of the drive disk 4414. The housing 41 is provided with a limiting chamber for placing the movable rod 4416. When the drive motor 441 starts working, the moving drive motor 441 can drive the drive disk 4414 to rotate. Since the connection position between the drive disk 4414 and the rocker arm 4415 is a non-central region of the drive disk 4414, the transmission unit is a non-central region of the drive disk 4414. The non-central area of ​​the moving disk 4414 allows the moving drive disk 4414 to drive the rocker arm 4415 to move. The moving rocker arm 4415 can then drive the movable rod 4416 to reciprocate along its axial direction. This causes the movable rod 4416 to collide with the drive shaft 4410, allowing one end of the drive shaft 4410 to extend out of the air injection pipe 42. This allows the gas to be discharged axially from the air injection pipe 42, ensuring that the gas is located in the hopper section 2 and completing the air injection process. This allows the slurry to form a protective layer. During this process, the air delivery channel is not connected to the air outlet 43, allowing all the gas to be discharged axially from the air injection pipe 42.

[0059] After the movable rod 4416 impacts the drive shaft 4410, the mechanical structure forces the gas delivery channel to disconnect from the gas outlet 43, ensuring that the gas is discharged axially without diversion loss. The gas is directly injected into the core area of ​​the silo section 2 and quickly diffuses into the entire slurry system, forming a dense inert gas protective layer. This improves gas utilization and can more efficiently block the contact between industrial waste gas and slurry, preventing abnormal solidification of the slurry. At the same time, the multi-point airflow impact causes radial disturbance in the slurry, promoting the full combination of inert gas and slurry particles and preventing gas stratification and escape. The axial airflow pushes the slurry to form vertical convection, so that the nitrogen protective layer is evenly located inside the slurry. Even during the continuous consumption of slurry in the silo section 2, a stable isolation state can be maintained, ensuring that the slurry subsequently delivered to the nozzle 34 is still under inert gas protection, solving the problem of interlayer adhesion failure from the root.

[0060] The transmission unit includes a first gear 442 sleeved on the output end of the drive motor 441, a first transmission shaft 444 movably disposed on the housing 41, a transmission gear 443 and a first bevel gear 445 respectively sleeved on the first transmission shaft 444, a second transmission shaft 447 movably disposed on the housing 41, and a second bevel gear 446 and a second gear 448 symmetrically disposed on the second transmission shaft 447; the second gear 448 meshes with the third gear 449, the first bevel gear 445 meshes with the second bevel gear 446; the first gear 442 meshes with the transmission gear 443; when the drive motor 441 starts working, the moving drive motor... 441 can drive the first gear 442 to rotate, and then through the set transmission gear 443, it can drive the first transmission shaft 444 to rotate. Then the moving first transmission shaft 444 can drive the first bevel gear 445 to rotate. Then the first bevel gear 445 drives the second gear 448 to rotate through the second bevel gear 446 and the second transmission shaft 447, thereby driving the third gear 449 to rotate. Then the moving third gear 449 can drive the drive shaft 4410 to rotate, so that the air supply channel can be intermittently connected to one of the air outlets 43, so that the same air outlet 43 can be intermittently vented, thereby completing the air injection work and ensuring the smooth operation of the printing work.

[0061] Intermittent venting allows the gas to gradually disperse in the slurry, forming a uniformly distributed microbubble protective layer, eliminating the risk of industrial waste gas coming into contact with the slurry, and ensuring the quality of subsequent interlayer bonding; this device can realize the intermittent connection between the gas supply channel on the drive shaft 4410 and a single gas injection port, so that the gas is discharged in a pulse, avoiding the problems of local gas enrichment or excessive slurry disturbance caused by traditional continuous gas injection.

[0062] The concrete printing unit 3 includes a lead screw linear assembly 31 arranged along the height direction of the protective frame 1, three linear slide rails 35 arranged on the protective frame 1, and movable arms 32 respectively arranged on the lead screw linear assembly 31 and the linear slide rails 35, an adjusting plate 33 for connecting the movable arms 32, and a nozzle 34 arranged on the adjusting plate 33; wherein the three linear slide rails 35 are distributed in a U-shape on the protective frame 1; the movable arm 32 includes a movable seat 324 arranged on the lead screw linear assembly 31, and a movable seat 324... The system includes a first connecting arm 321, a second connecting arm 322 movably connected to the first connecting arm 321, and two rotary motors 323 respectively disposed between the movable seat 324 and the first connecting arm 321 and between the first connecting arm 321 and the second connecting arm 322; the second connecting arm 322 is movably connected to the adjusting plate 33; wherein the length and width surfaces of the first connecting arm 321 connected to the lead screw linear assembly 31 are parallel to the top surface of the protective frame 1, and the length and width surfaces of the first connecting arm 321 connected to the linear slide rail 35 are at an angle to the top surface of the protective frame 1;

[0063] When building printing is required, the two rotary motors 323 can work together to adjust the angle between the lead screw linear assembly 31 and the first connecting arm 321, as well as between the first connecting arm 321 and the second connecting arm 322. This changes the horizontal position of the adjustment plate 33, enabling it to complete printing on the same horizontal plane. The operation of the lead screw linear assembly 31 raises the height of the adjustment plate 33, thus completing the inter-layer printing of the building and ensuring the smooth progress of the building printing work.

[0064] The nozzle 34 is also fitted with two opening units 6, and air nozzles are respectively disposed on the opening units 6; the two opening units 6 are arranged crosswise, and there is a predetermined angle between the direction of gas ejection from the air nozzle on one opening unit 6 and the direction of slurry ejection from the nozzle 34, while the direction of gas ejection from the air nozzle on the other opening unit 6 is opposite to the direction of slurry ejection from the nozzle 34; the opening unit 6 includes two hinge seats 61 disposed on the nozzle 34, a second connecting rod 62 movably connected to one of the hinge seats 61, a third connecting rod 63 movably connected to the other hinge seat 61, and a limiting groove 64 formed on the third connecting rod 63; one end of the second connecting rod 62 is provided with a limiting protrusion, which is located in the limiting groove 64 and can move in the limiting groove 64, and the air nozzle is disposed on the third connecting rod 63; the air injection nozzle and the air nozzle are connected to multiple air pumps through pipes, one air nozzle is used to inject gas at a certain temperature, while the other air nozzle injects the same gas as the air injection nozzle, and is used to isolate the slurry.

[0065] Before the nozzle 34 sprays slurry, the operator needs to install the hinge seat 61 on the nozzle 34, and then adjust the angle between the second connecting rod 62 and one of the hinge seats 61 to change the position of the limiting protrusion in the limiting groove 64, and change the angle between the second connecting rod 62 and the third connecting rod 63. This makes the angle between the axis of the jet nozzle that sprays slurry and the axis of the nozzle 34 15 degrees. This set of jet nozzles is a drying nozzle used for spraying drying gas. The other set of jet nozzles that spray away from the slurry has an angle of 45 degrees between the axis of the jet nozzle and the axis of the nozzle 34. This set is a protective nozzle. The drying nozzle dries the slurry and prevents it from contacting exhaust gas. The protective nozzle blows air to prevent dust from falling in.

[0066] The adjusting plate 33 is also provided with a scraping unit 5; the scraping unit 5 includes a mounting base 51 fixedly mounted on the adjusting plate 33, a rotary motor 52 fixedly mounted on the mounting base 51, and an intermittent component 53 connected to the output end of the rotary motor 52; the intermittent component 53 includes a rotating disk 531 connected to the output end of the rotary motor 52, a support disk 535 sleeved on the output end of the rotary motor 52, a rotating ring 534 sleeved on the support disk 535 and movably connected to the support disk 535, a plurality of first connecting rods 533 movably connected to the rotating ring 534, and a hook 532 movably connected to the rotating disk 531; the first connecting rods 533 are movably connected to the hook 532, the rotating disk 531 has a through hole on its side for the hook 532 to pass through, and the support disk 535 is fixedly connected to the mounting base 51; the output end of the rotary motor 52 is located at a non-center position of the support disk 535, and the output end of the rotary motor 52 is located at the center position of the rotating disk 531;

[0067] To improve the adhesion between adjacent layers of the paste and to break up the paste that has solidified due to contact with exhaust gas, the rotary motor 52 starts working. The rotating motor 52 drives the rotating disk 531 to rotate, which in turn drives the hook 532 to move. The hook 532 then drives the first connecting rod 533 to rotate, thereby causing the rotating ring 534 to rotate with the support disk 535. Since the output end of the rotary motor 52 is eccentrically set with the support disk 535, when the rotating ring 534 moves to the distal end of the support disk 535, the hook 532 can extend and contact the paste, thereby breaking up the protective layer on the paste and allowing new paste to contact the interlayer paste, ensuring the smooth progress of the printing work.

[0068] The number of intermittent components 53 is multiple, wherein bearings are provided between the output end of the rotating motor 52 and the support plate 535, and between the support plate 535 and the rotating ring 534, so that the support plate 535 will not move with the movement of the rotating motor 52.

[0069] Both the lead screw linear assembly 31 and the hopper section 2 are existing technologies. The hopper section 2 includes a mixing tank and a transport pipe connected to the mixing tank. The other end of the transport pipe is connected to a nozzle 34.

[0070] Working principle description: Before the nozzle 34 sprays slurry, the operator needs to install the hinge seat 61 on the nozzle 34, and then adjust the angle between the second connecting rod 62 and one of the hinge seats 61, thereby changing the position of the limiting protrusion in the limiting groove 64 and changing the angle between the second connecting rod 62 and the third connecting rod 63. This results in the angle between the axis of the jet nozzle spraying towards the slurry and the axis of the nozzle 34 being 15 degrees. This set of jet nozzles is a drying nozzle used for spraying drying gas. Another set of jet nozzles spraying away from the slurry has an angle of 45 degrees between its axis and the axis of the nozzle 34. This set is a protective nozzle. The drying nozzles dry the slurry and prevent it from contacting exhaust gas, while the protective nozzles blow air to prevent dust from falling in. When air injection is required, the drive motor... 441 starts working. The drive motor 441 drives the transmission unit to move, which in turn drives the third gear 449 to rotate. The moving third gear 449 then drives the drive shaft 4410 to rotate, thereby changing the position of the air supply channel on the drive shaft 4410 so that it can be discharged from different air injection ports on the air injection pipe 42, thus being injected into the slurry. At the same time, in conjunction with the work of the hopper 2, the slurry can be stirred and mixed. After the stirring work is completed, the gas can be transported with the slurry to the nozzle 34 for 3D printing. After the slurry injection work is completed, the gas in the slurry can be discharged, which can protect the slurry and prevent the slurry from contacting industrial waste gas, thus preventing the slurry from solidifying and causing the slurry layers to stick together and fail.

[0071] When the drive motor 441 starts working, the moving drive motor 441 can drive the drive disk 4414 to rotate. Since the connection position between the drive disk 4414 and the rocker arm 4415 is in the non-center area of ​​the drive disk 4414, the moving drive disk 4414 can drive the rocker arm 4415 to move. Thus, the moving rocker arm 4415 can drive the movable rod 4416 to reciprocate in its axial direction, so that the movable rod 4416 can collide with the drive shaft 4410, so that one end of the drive shaft 4410 can extend out of the air injection pipe 42, so that the gas can be discharged axially from the air injection pipe 42, so that the gas can be located in the hopper section 2, completing the air injection work.

[0072] When the drive motor 441 starts working, the moving drive motor 441 can drive the first gear 442 to rotate, and then drive the first transmission shaft 444 to rotate through the set transmission gear 443. The moving first transmission shaft 444 can drive the first bevel gear 445 to rotate, and then the first bevel gear 445 drives the second gear 448 to rotate through the second bevel gear 446 and the second transmission shaft 447, thereby driving the third gear 449 to rotate. Then the moving third gear 449 can drive the drive shaft 4410 to rotate, so that the air supply channel can be intermittently connected to one of the air outlets 43, so that the same air outlet 43 can be intermittently vented, thereby completing the air injection work and ensuring the smooth operation of the printing work.

[0073] When building printing is required, the two rotary motors 323 work together to adjust the angles between the lead screw linear assembly 31 and the first connecting arm 321, as well as between the first connecting arm 321 and the second connecting arm 322. This changes the horizontal position of the adjusting plate 33, enabling printing on the same horizontal plane. The lead screw linear assembly 31 raises the height of the adjusting plate 33, facilitating inter-layer printing and ensuring smooth building printing. When the rotary motor 52 starts working, the moving rotary motor 52 can... The rotating disk 531 is driven to rotate, and the rotating disk 531 drives the hook 532 to move. The moving hook 532 then drives the first connecting rod 533 to rotate, thereby enabling the rotating ring 534 to rotate with the support disk 535. Since the output end of the rotating motor 52 is eccentrically set with the support disk 535, when the rotating ring 534 moves to the distal end of the support disk 535, the hook 532 can extend and contact the ink, thereby breaking the protective layer on the ink and allowing new ink to contact the interlayer ink, ensuring the smooth progress of the printing work.

[0074] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A 3D printing device for tower-type building engineering, characterized in that, include: A protective frame (1) is used to isolate the building area; The hopper section (2) is installed on the protective frame (1) and is used for slurry preparation; A concrete printing unit (3) is installed on the protective frame (1) and connected to the hopper (2) for printing buildings in the building area; Multiple gas injection units (4) are evenly arranged on the silo section (2) to inject nitrogen into the silo section (2) so that the slurry is mixed with nitrogen. The air injection unit (4) includes a housing (41) fixedly connected to the hopper (2), a drive assembly (44) disposed in the housing (41), an air injection pipe (42) connected to the housing (41), and a plurality of air outlets (43) evenly disposed on the air injection pipe (42). The gas injection pipe (42) is provided with a gas injection nozzle; the operation of the drive assembly (44) enables nitrogen to be discharged from the gas injection pipe (42) axially or from the outlet (43); The drive assembly (44) includes a drive motor (441) fixedly mounted on the housing (41), a transmission part connected to the output end of the drive motor (441), a third gear (449) connected to the transmission part, a drive shaft (4410) passing through the third gear (449), a limiting ring (4411) sleeved on the drive shaft (4410), a bracket (4412) fixedly mounted on the housing (41), a return spring (4413) sleeved on the drive shaft (4410) and connected to the bracket (4412), and a limiting block disposed at one end of the drive shaft (4410) and abutting against the air injection pipe (42); The drive shaft (4410) is located in the air injection pipe (42), and the drive shaft (4410) is provided with an air delivery channel for guiding airflow in the circumferential direction; The transmission unit includes a drive disk (4414) connected to the output end of the drive motor (441), a rocker arm (4415) movably connected to the drive disk (4414), and a movable rod (4416) movably connected to the rocker arm (4415) and disposed in the housing (41). The connection position between the drive disk (4414) and the rocker arm (4415) is the non-center area of ​​the drive disk (4414); The housing (41) is provided with a limiting chamber for placing the movable rod (4416); The transmission unit includes a first gear (442) sleeved on the output end of the drive motor (441), a first transmission shaft (444) movably disposed on the housing (41), a transmission gear (443) and a first bevel gear (445) respectively sleeved on the first transmission shaft (444), a second transmission shaft (447) movably disposed on the housing (41), and a second bevel gear (446) and a second gear (448) symmetrically disposed on the second transmission shaft (447). The second gear (448) meshes with the third gear (449), and the first bevel gear (445) meshes with the second bevel gear (446); The first gear (442) meshes with the transmission gear (443).

2. The 3D printing equipment for tower-type building engineering according to claim 1, characterized in that: The concrete printing unit (3) includes a lead screw linear assembly (31) arranged along the height direction of the protective frame (1), three linear slide rails (35) arranged on the protective frame (1), movable arms (32) respectively arranged on the lead screw linear assembly (31) and the linear slide rails (35), an adjustment plate (33) for connecting the movable arm (32), and a nozzle (34) arranged on the adjustment plate (33). The three linear slide rails (35) are arranged in a U-shape on the protective frame (1).

3. The 3D printing equipment for tower-type building engineering according to claim 2, characterized in that: The movable arm (32) includes a movable seat (324) disposed on the lead screw linear assembly (31), a first connecting arm (321) connected to the movable seat (324), a second connecting arm (322) movably connected to the first connecting arm (321), and two rotary motors (323) respectively disposed between the movable seat (324) and the first connecting arm (321) and between the first connecting arm (321) and the second connecting arm (322). The second connecting arm (322) is movably connected to the adjusting plate (33); The length and width of the first connecting arm (321) connected to the lead screw linear assembly (31) are parallel to the top surface of the protective frame (1), and there is an angle between the length and width of the first connecting arm (321) connected to the linear slide rail (35) and the top surface of the protective frame (1).

4. The 3D printing equipment for tower-type building engineering according to claim 3, characterized in that: The nozzle (34) is also fitted with two opening units (6) and air nozzles respectively disposed on the opening units (6); Two opening units (6) are arranged in a cross configuration. There is a predetermined angle between the direction of gas ejection from the nozzle on one of the opening units (6) and the direction of slurry ejection from the nozzle (34). The direction of gas ejection from the nozzle on the other opening unit (6) is opposite to the direction of slurry ejection from the nozzle (34).

5. The 3D printing equipment for tower-type building engineering according to claim 4, characterized in that: The opening unit (6) includes two hinge seats (61) disposed on the nozzle (34), a second link (62) movably connected to one of the hinge seats (61), a third link (63) movably connected to the other hinge seat (61), and a limiting groove (64) opened on the third link (63). The second link (62) has a limiting protrusion at one end, the limiting protrusion is located in the limiting groove (64) and can move in the limiting groove (64), and the jet nozzle is set on the third link (63).

6. The 3D printing equipment for tower-type building engineering according to claim 5, characterized in that: The adjusting plate (33) is also provided with a scraping unit (5); The scraping unit (5) includes a mounting base (51) fixedly mounted on the adjusting plate (33), a rotary motor (52) fixedly mounted on the mounting base (51), and an intermittent component (53) connected to the output end of the rotary motor (52). The intermittent assembly (53) includes a rotary disk (531) connected to the output end of the rotary motor (52), a support disk (535) sleeved on the output end of the rotary motor (52), a rotating ring (534) sleeved on the support disk (535) and movably connected to the support disk (535), a plurality of first connecting rods (533) movably connected to the rotating ring (534), and a hook (532) movably connected to the rotary disk (531). The first connecting rod (533) is movably connected to the hook (532), the rotating disk (531) has a through hole on its side for the hook (532) to pass through, and the support disk (535) is fixedly connected to the mounting base (51). The output end of the rotating motor (52) is located at the non-center position of the support disk (535), and the output end of the rotating motor (52) is located at the center position of the rotating disk (531).

7. A 3D printing device for tower-type building engineering according to claim 6, characterized in that: The number of intermittent components (53) is multiple, and the multiple intermittent components (53) are respectively arranged on the output end of the rotating motor (52). The output end of the rotating motor (52) and the support plate (535) and the support plate (535) and the rotating ring (534) are all provided with bearings, so that the support plate (535) will not move with the movement of the rotating motor (52).

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