CN113084962A

CN113084962A - A3D printing device for underground piping structure lays

Info

Publication number: CN113084962A
Application number: CN202110367402.5A
Authority: CN
Inventors: 常智星; 程雪松; 程鸿飞; 高天润; 李德义; 王若展
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-07-09
Anticipated expiration: 2041-04-06
Also published as: CN113084962B

Abstract

The invention provides a 3D printing device for laying an underground pipeline structure, which comprises a shell, a shield machine, a rotating mechanism and a printing mechanism, wherein the shield machine, the rotating mechanism and the printing mechanism are sequentially arranged from front to back; wherein, rotary mechanism and printing mechanism are located the shell, the shield constructs the machine with shell fixed connection. The invention reduces the dust pollution of underground construction building materials and improves the construction efficiency.

Description

A3D printing device for underground piping structure lays

Technical Field

The invention relates to the technical field of underground pipeline construction, in particular to a 3D printing device for laying an underground pipeline structure.

Background

At present, the construction method adopted in the construction of laying underground pipelines without underground water or with little underground water, tunneling, underground excavation and the like is a shield method. The shield method is a fully mechanical construction method in tunnel and underground engineering construction, and is a mechanical construction method for forming a tunnel structure by propelling a shield machine in the stratum, supporting surrounding rocks around through a shield shell and pipe pieces to prevent collapse of the tunnel, excavating soil body in front of an excavation surface by using a cutting device, transporting out of a tunnel through an unearthing machine, pressing and jacking on a lining assembled into a ring at the rear part by using a jack, and then assembling prefabricated concrete pipe pieces.

In the tunnel shield construction process, the top primary lining construction process is carried out by adopting a mode of manually or mechanically spraying concrete. Because can produce a large amount of dust in spraying, cause air pollution serious, be not convenient for workman long-time construction, when construction cost of labor increases, the construction progress is slow. In addition, the concrete will partially fall off during the spraying process, which results in material waste, and the slurry waste generated by the shield is difficult to treat.

Therefore, a technical scheme capable of avoiding the generation of a large amount of dust by spraying in shield construction and saving materials is needed in the prior art.

Disclosure of Invention

In view of the above-mentioned deficiencies of the prior art, the present invention provides a 3D printing device for underground piping structure laying.

In order to achieve the purpose, the invention is realized by the following technical scheme:

A3D printing device for laying an underground pipeline structure comprises a shell, a shield machine, a rotating mechanism and a printing mechanism, wherein the shield machine, the rotating mechanism and the printing mechanism are sequentially arranged from front to back; wherein, rotary mechanism and printing mechanism are located the shell, the shield constructs the machine with shell fixed connection.

The rotating mechanism comprises a rotating mechanism motor, a transmission gear combination, a gear ring and a planetary gear, the rotating mechanism motor drives the transmission gear combination to transmit automatically, the planetary gear is meshed with the transmission gear combination, the planetary gear is also meshed with the gear ring, and the gear ring is fixedly connected with the shell;

the printing mechanism comprises a printer, a supporting die, a self-driven propeller, a printing base and a material conveying pipeline, wherein a material conveying pump is arranged in the printer, and the front end of the printer is fixedly connected with the planet wheel and synchronously rotates with the planet wheel; the rear surface of the printer is provided with a jet orifice, and the supporting die is fixedly connected with the rear end of the printer; the front end of the self-driven propeller is fixedly connected with the printer; the material delivery pipe runs through the printing base and is connected with the printer.

The transmission gear combination comprises a driven wheel and a sun wheel, the sun wheel is fixedly connected with the driven wheel and synchronously rotates, a driving wheel is sleeved on an output shaft of the rotating mechanism motor, and the driving wheel is meshed with the driven wheel.

The sun gear is coaxial with the driven gear.

The sun wheel and the driven wheel have the same diameter.

A front gear baffle is arranged in front of the driven wheel, and a rear gear baffle is arranged behind the sun wheel.

The number of the supporting molds is three, and the three supporting molds are arranged in an equilateral triangle; the number of the jet openings is three, the three jet openings are arranged in an equilateral triangle, and the jet openings correspond to the positions of the supporting die one by one.

The number of the planet wheels is three, and the three planet wheels are arranged in an equilateral triangle; the number of the planetary wheel shafts is three, the three planetary wheel shafts are arranged in an equilateral triangle, each planetary wheel shaft is inserted into the corresponding planetary wheel and is fixedly connected with the corresponding planetary wheel, and when the planetary wheel revolves around the sun wheel, the planetary wheel shafts and the planetary wheels synchronously move, so that the printer synchronously rotates along with the planetary wheels.

The self-driven propeller is an electric push rod or a hydraulic rod.

The front end of the shield machine is provided with a blade, the rear end of the shield machine is provided with a motor installation position, the rear end of the shield machine is further provided with a printing main body connecting groove, a printing main body connecting hole is further formed in the outer wall of the printing main body connecting groove, a mounting hole is formed in the shell, and the mounting hole is fixedly connected with the printing main body connecting hole through a bolt.

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

1. the 3D printing technology is utilized, materials needed by pipelines, tunnels and the like are ejected, and a supporting mold, a printing base, a printer and a shell are utilized to form a closed space, so that the materials are molded, and the dust pollution of underground construction building materials is reduced.

2. The gear ring is fixedly connected with the shell, and the planet wheel can also move along the gear ring when rotating around the sun wheel; simultaneously, the planet wheel is again with printer fixed connection, therefore, when the planet wheel moved, can drive the printer synchronous revolution, realized printing the 3D of tubular structures such as underground piping, tunnel, realized continuous incessant construction, improved the efficiency of construction.

3. The self-driven propellers such as the electric push rod or the hydraulic rod intermittently push the printer forward, and underground construction with a long distance can be completed.

Drawings

Fig. 1 is a schematic configuration diagram of a 3D printing apparatus.

Fig. 2 is a schematic diagram of the internal structure of the 3D printing device with the shield machine and a half of the housing removed.

Fig. 3 is a schematic diagram of the internal structure of the 3D printing device with the shield machine and a half of the housing removed from another view angle.

Fig. 4 is an internal front view of the 3D printing apparatus with the shield machine and half of the housing removed.

Fig. 5 is a schematic structural view of the rotating mechanism.

Fig. 6 is a schematic diagram of a printer with a supporting die.

Fig. 7 is a schematic view of a printer with a supporting die from another perspective.

Fig. 8 is a schematic structural view of the printing base.

Fig. 9 is a front view of the shield machine.

Fig. 10 is a left side view of fig. 9.

Fig. 11 is a schematic structural diagram of the 3D printing device of fig. 1 with a half of the housing removed and the inside.

Reference numerals: the automatic printing device comprises a 1-rotating mechanism motor, a 2-transmission gear combination, a 21-driven wheel, a 22-sun wheel, a 3-gear ring, a 4-planet wheel, a 5-shell, a 61-front gear baffle, a 62-rear gear baffle, a 7-driving wheel, an 8-printer, a 9-supporting mold, a 10-self-driven propeller, a 11-printing base, a 12-material conveying pipeline, a 13-planet wheel shaft, a 100-shield machine, a 101-motor installation position, a 102-printing main body connecting hole, a 200-rotating mechanism, a 201-shell connecting hole and a 300-printing mechanism.

Detailed Description

The invention is further illustrated by the following specific embodiments.

The 3D printing device for laying the underground pipeline structure as shown in the figures 1 to 11 comprises a shell 5, wherein a shield tunneling machine 100, a rotating mechanism 200 and a printing mechanism 300 are sequentially arranged in the shell 5 from front to back.

The front end of the shield tunneling machine 100 is provided with a blade, the rear end of the shield tunneling machine 100 is provided with a motor installation position 101, the rear end of the shield tunneling machine 100 is further provided with a printing main body connecting groove, and a printing main body connecting hole 102 is further formed in the outer wall of the printing main body connecting groove. The shell 5 is formed by splicing two semi-cylindrical shell bodies, each shell body is provided with a shell connecting hole 201, the positions of the shell connecting holes 201 on the two shell bodies are in one-to-one correspondence, bolts penetrate through the shell connecting holes 201 on the two shell bodies and are locked, and the shell 5 can be completely assembled. The shell 5 is provided with a mounting hole, the mounting hole is positioned in front of the shell, and the mounting hole is fixedly connected with the printing main body connecting hole 102 through a bolt, so that the shield tunneling machine 100 is fixedly connected with the shell 5.

The rotating mechanism comprises a rotating mechanism motor 1, a transmission gear combination 2, a gear ring 3 and a planetary gear 4, the rotating mechanism motor 1 drives the transmission gear combination 2 to transmit automatically, the planetary gear 4 is meshed with the transmission gear combination 2, the planetary gear 4 is further meshed with the gear ring 3, and the gear ring 3 is fixedly connected with a shell 5.

The printing mechanism comprises a printer 8, a supporting die 9, a self-driven propeller 10, a printing base 11, a material conveying pipeline 12 and a planetary wheel shaft 13, wherein the self-driven propeller 10 can be an electric push rod or a hydraulic rod, and the electric push rod is adopted in the embodiment. The front end of the self-driven propeller 10 is fixedly connected with the printer 8. A material conveying pump is arranged in the printer 8, a jet orifice 14 is arranged on the rear surface of the printer 8, and the supporting die 9 is fixedly connected with the rear end of the printer 8; the planet wheel shaft 13 is fixedly connected with the front end of the printer 8, the planet wheel 4 rotates by taking the planet wheel shaft 13 as a shaft, and the planet wheel 4 is fixedly connected with the planet wheel shaft 13; a material delivery conduit 12 extends through the printing base 11 and is connected to the printer 8.

The transmission gear combination 2 comprises a driven wheel 21 and a sun wheel 22, the sun wheel 22 is fixedly connected with the driven wheel 21 and synchronously rotates, a driving wheel 7 is sleeved on an output shaft of the rotating mechanism motor 1, and the driving wheel 7 is meshed with the driven wheel 21. The driven wheel 21 is coaxial with the sun wheel 22. In the present embodiment, the driven wheel 21 and the sun wheel 22 have the same diameter. A front gear guard 61 is provided in front of the driven wheel 21, and a rear gear guard 62 is provided behind the sun gear 22.

In this embodiment, as shown in fig. 6-7, the supporting mold 9 is made of three steel plates with different heights, and the three steel plates are connected in sequence and have an outward opening. The number of the supporting molds 9 is three, and the three supporting molds 9 are arranged in an equilateral triangle; the number of the ejection openings 14 is three, the three ejection openings 14 are arranged in an equilateral triangle with each other, and the ejection openings 14 correspond one-to-one to the positions of the support dies 9.

In the embodiment, the number of the planet wheels 4 is three, and the three planet wheels 4 are arranged in an equilateral triangle; the number of the planetary wheel shafts 13 is three, the three planetary wheel shafts 13 are arranged in an equilateral triangle, and each planetary wheel shaft 13 is inserted into a corresponding planetary wheel 4 and is fixedly connected with the corresponding planetary wheel 4.

The working principle of the invention is as follows:

the rotating mechanism motor 1 can work intermittently, when the rotating mechanism motor is started, the driving wheel 7 is driven to rotate, the driving wheel 7 drives the driven wheel 21, the sun wheel 22 is fixedly connected with the driven wheel 21 and rotates synchronously, therefore, when the sun wheel 22 rotates automatically, the planet wheel 4 revolves around the sun wheel 22, the planet wheel shaft 13 and the planet wheel 4 are driven to move synchronously, and the printer 8 rotates around the rotation axis of the printer under the driving of the planet wheel 4, because the planet wheel 4 is meshed with the gear ring 3 and the sun wheel 22 and the gear ring 3 is fixedly connected with the shell 5 into a whole.

The number of material feed pumps in the printer 8 may be one or more, each with its own drive motor, and under the control of the PLC. When the motor 1 of the rotating mechanism is started to enable the printer 8 to rotate to the next station, under the control of the PLC, the corresponding material conveying pump ejects the 3D printing material under the driving of the self-provided driving motor, and the material is formed in a closed space surrounded by the supporting mold 9, the printing base 11, the printer 8 and the shell 5. The material conveying pipeline 12 is connected with external power, and the outside is kept the state of carrying the printing material in the material conveying pipeline 12 all the time, makes and is kept certain pressure in the material conveying pipeline 12 all the time, when printer 8 blowout 3D printing material, is full of the printing material in the material conveying pipeline 12 all the time.

The self-driven propeller 10 is a power device and can intermittently move, and for example, the self-driven propeller can be externally connected with a cable or internally provided with a storage battery by taking the electric push rod as an example, the front end of the electric push rod is fixedly connected with the printer 8, and the right end of the electric push rod is fixedly connected with the printer. In the initial stage, the end of the power push rod abuts against the printing base 11. Every time when the printer 8 finishes 3D printing of a circle, the electric push rod pushes the printer 8 to move forwards, and the tail end of the electric push rod abuts against the underground pipeline and other structures printed last time.

And repeating the process to print the underground pipeline structures with certain length in a 3D manner.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention.

The above description is only for the preferred embodiment of the present invention, but the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes and modifications without departing from the inventive concept, which falls into the protection scope of the present invention.

Claims

1. A3D printing device for laying an underground pipeline structure comprises a shell (5), and is characterized by further comprising a shield machine (100), a rotating mechanism (200) and a printing mechanism (300) which are sequentially arranged from front to back; the rotation mechanism (200) and the printing mechanism (300) are disposed within the housing (5); the shield machine (100) is fixedly connected with the shell (5);

the rotating mechanism comprises a rotating mechanism motor (1), a transmission gear combination (2), a gear ring (3) and a planetary gear (4), the rotating mechanism motor (1) drives the transmission gear combination (2) to conduct self transmission, the planetary gear (4) is meshed with the transmission gear combination (2), the planetary gear (4) is further meshed with the gear ring (3), and the gear ring (3) is fixedly connected with the shell (5);

the printing mechanism comprises a printer (8), a supporting die (9), a self-driven propeller (10), a printing base (11) and a material conveying pipeline (12), a material conveying pump is arranged in the printer (8), and the front end of the printer (8) is fixedly connected with the planet wheel (4) and synchronously rotates with the planet wheel (4); the rear surface of the printer (8) is provided with a jet orifice (14), and the supporting die (9) is fixedly connected with the rear end of the printer (8); the front end of the self-driven propeller (10) is fixedly connected with the printer (8); the material conveying pipeline (12) penetrates through the printing base (11) and is connected with the printer (8).

2. The 3D printing device for underground pipeline structure laying according to claim 1, wherein the transmission gear assembly (2) comprises a driven wheel (21) and a sun wheel (22), the sun wheel (22) is fixedly connected with the driven wheel (21) and synchronously rotates, a driving wheel (7) is sleeved on an output shaft of the rotating mechanism motor (1), and the driving wheel (7) is meshed with the driven wheel (21).

3. 3D printing device for underground pipe work laying according to claim 2, characterized in that the sun wheel (22) is coaxial with the driven wheel (21).

4. 3D printing device for underground pipe work laying according to claim 3, characterized in that the sun wheel (22) and the driven wheel (21) are of the same diameter.

5. 3D printing device for underground pipe work laying according to claim 2, characterized in that a front gear blind (61) is arranged in front of the driven wheel (21) and a rear gear blind (62) is arranged behind the sun wheel (22).

6. 3D printing device for underground pipe work laying according to claim 1, characterized in that the number of supporting moulds (9) is three, the three supporting moulds (9) being arranged in equilateral triangles with respect to each other; the number of the jet openings (14) is three, the three jet openings (14) are arranged in an equilateral triangle, and the jet openings (14) correspond to the positions of the support dies (9) one by one.

7. 3D printing device for underground pipe structure laying according to claim 1, characterized in that the printing mechanism further comprises a planetary wheel shaft (13), the planetary wheel shaft (13) is fixedly connected with the front end of the printer (8), the planetary wheel (4) rotates with the planetary wheel shaft (13) as the axis, and the planetary wheel (4) is fixedly connected with the planetary wheel shaft (13).

8. 3D printing device for laying an underground pipeline structure according to claim 7, characterised in that the number of planet wheels (4) is three, the three planet wheels (4) being arranged in an equilateral triangle with each other; the number of the planetary wheel shafts (13) is three, the three planetary wheel shafts (13) are arranged in an equilateral triangle, each planetary wheel shaft (13) is inserted into the corresponding planetary wheel (4) and is fixedly connected with the corresponding planetary wheel (4), and when the planetary wheels (4) revolve around the sun wheel (22), the planetary wheel shafts (13) and the planetary wheels (4) move synchronously, so that the printer (8) rotates synchronously along with the planetary wheels (4).

9. 3D printing device for underground pipe work laying according to claim 1, characterized in that the self-driven thruster (10) is an electric push rod or a hydraulic rod.

10. The 3D printing device for underground pipeline structure laying according to claim 1, wherein a blade is arranged at the front end of the shield tunneling machine (100), a motor installation position (101) is arranged at the rear end of the shield tunneling machine (100), a printing main body connecting groove is further arranged at the rear end of the shield tunneling machine (100), a printing main body connecting hole (102) is further arranged on the outer wall of the printing main body connecting groove, a mounting hole is formed in the outer shell (5), and the mounting hole is fixedly connected with the printing main body connecting hole (102) through a bolt.