Rack structure of rail type site 3D building printer

Abstract

The invention relates to the technical field of building construction, in particular to a rack structure of a rail type site 3D building printer, which comprises two supporting mechanisms, a same cross beam assembly is arranged between the two supporting mechanisms, each supporting mechanism comprises a trapezoidal structure supporting frame, and the inner walls of the two sides of each supporting frame are fixedly connected with a same rectangular frame. A connecting assembly is slidably mounted on the inner wall of the rectangular frame and connected with the cross beam assembly, a driving assembly is mounted on the outer wall of the top of the supporting frame, and a servo motor is arranged on the top of the driving assembly. The two mounting assemblies are arranged on the connecting assembly, the mounting assemblies are matched with the mounting bases on the cross beam frame, the cross beam assembly can be conveniently and rapidly mounted on the two supporting mechanisms, and meanwhile, adjustable prisms in the mounting assemblies are matched with edge grooves in the mounting bases; the stability of the cross beam assembly is improved in the process of quickly installing the cross beam assembly, and the problem that an existing cross beam assembly is inconvenient to disassemble and assemble quickly is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a frame structure of a rail-type field 3D building printer. Background Art

[0002] With the further development, research and development of 3D printing technology, it is being used more and more widely in various technical fields. The construction industry, which was unimaginable in the past, has also made remarkable progress. People have begun to realize that as long as it is a cement product component, it should be able to be 3D printed, and it is required that it can be printed not only in the factory, but also directly in the outdoor venue.

[0003] After searching, the Chinese patent application number CN109986677A discloses a frame structure of a rail-type field 3D building printer, including two rows of rail guides symmetrically arranged at a certain distance, a running mechanism, a metal structure frame, a lifting mechanism, and a balancing component; wherein: the metal structure frame contains symmetrically arranged left / right legs and a crossbeam, the legs are composed of a frame column with a rectangular cross-section and an inclined support frame attached to one side, the side of the frame column opposite to the two legs is provided with an opening for the crossbeam to move up and down, the side of the frame column connected to the inclined support frame is provided with a rectangular guide column, and the side wall of the rectangular guide column facing the inclined support frame is inlaid with a rack, and the crossbeam is a four-beam The frame structure has hinge pin holes for inserting hinge pin shafts at both ends of the crossbeam; the lifting mechanism includes a power component and a lifting component, the power component is composed of a motor, a reduction box and gears of the reduction box output shaft, the lifting component includes a lifting body, a plurality of rollers and a hinge pin seat, the lifting body includes an upper layer, a middle layer and a lower layer, the upper layer, the middle layer and the lower layer are provided with holes for rectangular guide rail columns to pass through, the left side of the middle layer is provided with a plate for fixing the power component, the right side is provided with a short beam for installing the crossbeam, the hinge pin seat is fixed on the upper surface of the short beam, the four walls of the upper and lower layers are installed with rollers, the rims of the rollers pass through the wall holes and are exposed in the holes passed through by the rectangular guide rail columns, and the cavity formed by the rims of the four rollers coincides with the surface of the rectangular guide rail column.

[0004] The frame structure of a rail-type field 3D construction printer in the above patent has the following deficiencies: in the above patent, the crossbeam is installed on a hinge pin seat, but the hinge pin seat is not convenient for quick disassembly and assembly of the crossbeam during the actual installation process. The crossbeam will be damaged during long-term use and needs to be maintained regularly, otherwise the crossbeam will be damaged and cannot work normally. Summary of the invention

[0005] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a frame structure of a rail-type site 3D building printer, comprising two supporting mechanisms, a same beam assembly is arranged between the two supporting mechanisms, the supporting mechanism comprises a trapezoidal structure support frame, the inner walls on both sides of the support frame are fixedly connected with the same rectangular frame, and the inner wall of the rectangular frame is slidably installed with a connecting assembly, the connecting assembly and the beam assembly are connected, a driving assembly is installed on the top outer wall of the support frame, and a servo motor is arranged on the top of the driving assembly, two screws are rotatably connected to the bottom inner wall and the top inner wall of the support frame, the connecting assembly is connected to the screws, and a walking assembly is installed on the bottom outer wall of the support frame.

[0007] By adopting the above mechanism, the crossbeam assembly is conveniently supported by two supporting mechanisms. The servo motor in the supporting mechanism cooperates with the driving assembly to drive the screw to rotate synchronously. When the screw rotates, it directly drives the connecting assembly to rise and fall, and at the same time facilitates the rapid disassembly and assembly of the crossbeam assembly.

[0008] The connecting assembly comprises a sliding seat, and the sliding seat is slidably connected to the inner wall of the rectangular frame, and a support plate is fixedly connected to an outer wall on one side of the sliding seat.

[0009] By adopting the above mechanism, the sliding seat can be installed conveniently through the provision of the rectangular frame, and the support plate can be provided conveniently to support the crossbeam assembly.

[0010] The sliding seat is screwed onto the outer walls of the two screw rods, and one side outer wall of the sliding seat is provided with two symmetrically arranged mounting components.

[0011] By adopting the above mechanism, the sliding seat can be directly driven to rise and fall by rotating the screw rod, and the arrangement of the mounting assembly facilitates the installation of the crossbeam assembly.

[0012] The driving assembly includes a driving box fixedly connected to the outer wall of the top of the support frame, and the inner wall of the bottom of the driving box is rotatably connected to two gears, and one end of the transmission shaft of the two gears is respectively fixedly connected to the two screw rods.

[0013] By adopting the above mechanism, the two gears can be rotated conveniently through the setting of the driving box, and the rotation of the gears can directly drive the two screws to rotate.

[0014] The inner wall at the bottom of the driving box is rotatably connected with a gear 2, and the gear 2 and the two gears 1 are meshed with each other, and the output shaft of the servo motor is fixedly connected to the gear 2.

[0015] By adopting the above mechanism, the servo motor drives the gear 2 to rotate. When the gear 2 rotates, it directly drives the two gears 1 to rotate synchronously, thereby making the two screws rotate synchronously, which is convenient for driving the sliding seat to stably rise and fall.

[0016] The crossbeam assembly comprises a crossbeam frame, and both side outer walls of the crossbeam frame are fixedly connected with mounting seats, the cross section of the mounting seats is a T-shaped structure, and both side outer walls of the mounting seats are provided with ridge grooves.

[0017] By adopting the above mechanism, by arranging mounting seats at both ends of the crossbeam frame, the cooperation between the mounting seats and the mounting components facilitates the rapid disassembly and assembly of the crossbeam frame.

[0018] A rectangular groove is provided on an outer wall of one side of the mounting seat, and a pressing block is slidably connected to the inner wall of the rectangular groove, and a plurality of springs are fixedly connected between the inner wall of the pressing block and the pressing block.

[0019] By adopting the above mechanism, the pressing block is supported by the second spring, and when the crossbeam frame is installed, the pressing block compresses the second spring.

[0020] The mounting assembly includes a mounting base, and the mounting base is fixedly connected to the outer wall of the sliding seat. An edge is opened on the inner wall of one side of the mounting cavity, and a prism is slidably connected to the inner wall of the edge. The specifications of the prism match the specifications of the edge groove, and one end of the prism is fixedly connected to the sliding plate.

[0021] By adopting the above mechanism, the prism can be conveniently slidably installed through the edge opening in the installation base, and when the prism is inserted into the edge groove, the crossbeam assembly can be installed.

[0022] Two fixing rods are fixedly connected to the inner wall of one side of the installation cavity, and the outer walls of the two fixing rods are sleeved with springs, the sliding plate is slidably connected to the outer walls of the two fixing rods, the inner wall of one side of the installation cavity is fixedly connected to a mounting tube, and the inner wall of the mounting tube is slidably connected to a driving column, one end of the driving column is fixedly connected to the sliding plate, the inner wall of the mounting tube is fixedly connected to an electromagnet, and one end of the driving column is fixedly connected to an armature matching the electromagnet.

[0023] By adopting the above mechanism, when the prism is adjusted, the electromagnet in the mounting tube is energized to generate magnetism, which directly attracts the armature to move. When the armature moves, it directly drives the driving column to move. When the driving column moves, it directly pulls the sliding plate to compress the spring 1. When the electromagnet is de-energized, the spring 1 directly drives the prism to extend.

[0024] The inner walls on both sides of the installation cavity are rotatably connected with the same bidirectional screw, and the outer wall of the bidirectional screw is screwed with two threaded sleeves, the outer walls of the two threaded sleeves are rotatably connected with driving plates, and one end of the two driving plates is rotatably connected to the sliding plate, the inner wall of the installation cavity is fixedly connected with a servo motor, and a pulley 1 is fixedly connected to the output shaft of the servo motor, one end of the bidirectional screw is fixedly connected with a pulley 2, and the same belt is connected between the pulley 2 and the pulley 1.

[0025] By adopting the above mechanism, the bidirectional screw is driven to rotate by starting the servo motor. When the bidirectional screw rotates, it directly drives the two threaded sleeves to move toward or away from each other. When the two threaded sleeves move away from each other, the prism is directly pulled into the installation cavity through the driving plate.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention provides two mounting components on the connecting component, and the mounting components cooperate with the mounting seats on the beam frame, so as to facilitate the rapid installation of the beam component on the two supporting mechanisms. At the same time, the adjustable prisms in the mounting components cooperate with the prism grooves on the mounting seats, so as to facilitate the rapid installation of the beam component and improve the stability of the beam component, thereby solving the problem that the existing beam component is inconvenient to quickly disassemble and assemble;

[0028] (2) The present invention arranges two screws on the support frame and also arranges a driving assembly on the support frame. The arrangement of the driving assembly facilitates the synchronous rotation of the two screws. When the two screws rotate, it is convenient to directly drive the connecting assembly to drive the crossbeam assembly to stably rise and fall. At the same time, the screw drive method improves the accuracy of the crossbeam height adjustment.

[0029] (3) The present invention provides a clamping block driven by spring 2 on the mounting seat, and the clamping block is pressed on the connecting assembly, thereby preventing the crossbeam from shaking during actual use, and further improving the stability of the crossbeam assembly. The servo motor cooperates with gear 2 to directly drive the two gears 1 to rotate synchronously, thereby ensuring the synchronous rotation of the two screws on the same support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the support mechanism structure of the present invention;

[0032] Figure 3 It is a schematic cross-sectional structural diagram of a driving assembly of the present invention;

[0033] Figure 4 Schematic diagram of the installation mechanism structure of the present invention

[0034] Figure 5 It is a schematic diagram of the structure of the crossbeam assembly of the present invention;

[0035] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the mounting seat of the present invention;

[0036] Figure 7 This is a schematic cross-sectional view of the installation assembly of Embodiment 1 of the present invention;

[0037] Figure 8This is a schematic cross-sectional view of the installation assembly of Embodiment 2 of the present invention.

[0038] In the figure: 1. support mechanism; 2. crossbeam assembly; 3. support frame; 4. walking assembly; 5. rectangular frame; 6. connecting assembly; 7. screw; 8. drive assembly; 9. servo motor; 10. drive box; 11. gear one; 12. gear two; 13. sliding seat; 14. support plate; 15. mounting assembly; 16. crossbeam frame; 17. mounting seat; 18. prism groove; 19. mounting base; 20. mounting cavity; 21. sliding plate; 22. prism; 23. fixing rod; 24. spring one; 25. mounting tube; 26. drive column; 27. electromagnet; 28. armature; 29. ​​bidirectional screw; 30. threaded sleeve; 31. drive plate; 32. servo motor; 33. belt; 34. rectangular groove; 35. clamping block; 36. spring two. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] See also Figure 1-7 A frame structure of a rail-type site 3D building printer comprises two supporting mechanisms 1, a same beam assembly 2 is arranged between the two supporting mechanisms 1, the supporting mechanism 1 comprises a trapezoidal structure supporting frame 3, the inner walls on both sides of the supporting frame 3 are fixedly connected with the same rectangular frame 5, and the inner wall of the rectangular frame 5 is slidably installed with a connecting assembly 6, the connecting assembly 6 is connected to the beam assembly 2, a driving assembly 8 is installed on the top outer wall of the supporting frame 3, and a servo motor 9 is arranged on the top of the driving assembly 8, the bottom inner wall and the top inner wall of the supporting frame 3 are rotatably connected with two screw rods 7, the connecting assembly 6 is connected to the screw 7, and a walking assembly 4 is installed on the bottom outer wall of the supporting frame 3, the beam assembly 2 is conveniently supported by the two supporting mechanisms 1, the servo motor 9 in the supporting mechanism 1 cooperates with the driving assembly 8 to conveniently drive the screw 7 to rotate synchronously, and when the screw 7 rotates, the connecting assembly 6 is directly driven to rise and fall, and at the same time, the beam assembly 2 is convenient to be quickly disassembled and assembled.

[0042] For details, please refer to Figure 4 The connecting component 6 includes a sliding seat 13, and the sliding seat 13 is slidably connected to the inner wall of the rectangular frame 5. A support plate 14 is fixedly connected to the outer wall of one side of the sliding seat 13. The setting of the rectangular frame 5 facilitates the installation of the sliding seat 13, and the setting of the support plate 14 facilitates the support of the beam component 2.

[0043] For details, please refer to Figure 4 The sliding seat 13 is screwed on the outer walls of the two screw rods 7. Two symmetrically arranged mounting components 15 are installed on the outer wall of one side of the sliding seat 13. The sliding seat 13 can be directly driven to rise and fall by rotating the screw rods 7. The installation component 15 is convenient for installing the crossbeam component 2.

[0044] For details, please refer to Figure 2-3 The driving assembly 8 includes a driving box 10 fixedly connected to the top outer wall of the support frame 3, and the bottom inner wall of the driving box 10 is rotatably connected to two gears 11, one end of the transmission shaft of the two gears 11 is respectively fixedly connected to the two screw rods 7. The setting of the driving box 10 facilitates the rotation of the two gears 11, and the rotation of the gears 11 directly drives the two screw rods 7 to rotate.

[0045] For details, please refer to Figure 3 The inner wall at the bottom of the driving box 10 is rotatably connected to a gear 2 12, and the gear 2 12 and the two gears 1 11 are meshed with each other. The output shaft of the servo motor 9 is fixedly connected to the gear 2 12, and the servo motor 9 drives the gear 2 12 to rotate. When the gear 2 12 rotates, it directly drives the two gears 1 11 to rotate synchronously, thereby making the two screws 7 rotate synchronously, which is convenient for driving the sliding seat 13 to rise and fall stably.

[0046] For details, please refer to Figure 5 The crossbeam assembly 2 includes a crossbeam frame 16, and the outer walls on both sides of the crossbeam frame 16 are fixedly connected with mounting seats 17, the cross-section of the mounting seats 17 is a T-shaped structure, and the outer walls on both sides of the mounting seats 17 are provided with ridge grooves 18. By arranging mounting seats 17 at both ends of the crossbeam frame 16, the cooperation between the mounting seats 17 and the mounting assembly 15 facilitates the rapid disassembly and assembly of the crossbeam frame 16.

[0047] For details, please refer to Figure 6 A rectangular groove 34 is provided on the outer wall of one side of the mounting seat 17, and a clamping block 35 is slidably connected to the inner wall of the rectangular groove 34. A plurality of springs 36 are fixedly connected between the inner wall of the clamping block 35 and the clamping block 35. The clamping block 35 is supported by the springs 36. When the crossbeam frame 16 is installed, the clamping block 35 compresses the springs 36.

[0048] For details, please refer to Figure 7The mounting assembly 15 includes a mounting base 19, and the mounting base 19 is fixedly connected to the outer wall of the sliding seat 13. An edge is opened on the inner wall of one side of the mounting cavity 20, and a prism 22 is slidably connected to the inner wall of the edge. The specifications of the prism 22 match the specifications of the prism groove 18. One end of the prism 22 is fixedly connected to a sliding plate 21. The edge in the mounting base 19 facilitates the sliding installation of the prism 22. When the prism 22 is inserted into the prism groove 18, the beam assembly 2 can be installed.

[0049] For details, please refer to Figure 7 , one side inner wall of the mounting cavity 20 is fixedly connected with two fixing rods 23, and the outer walls of the two fixing rods 23 are sleeved with springs 1 24, the sliding plate 21 is slidably connected to the outer walls of the two fixing rods 23, one side inner wall of the mounting cavity 20 is fixedly connected with a mounting tube 25, and the inner wall of the mounting tube 25 is slidably connected with a driving column 26, one end of the driving column 26 is fixedly connected to the sliding plate 21, the inner wall of the mounting tube 25 is fixedly connected with an electromagnet 27, and one end of the driving column 26 is fixedly connected with an armature 28 matching the electromagnet 27. When the prism 22 is adjusted, the electromagnet 27 in the mounting tube 25 is energized to generate magnetism, and the electromagnet 27 is energized to generate magnetism that directly attracts the armature 28 to move. When the armature 28 moves, it directly drives the driving column 26 to move. When the driving column 26 moves, it directly pulls the sliding plate 21 to compress the spring 1 24. When the electromagnet 27 is powered off, the spring 1 24 directly drives the prism 22 to extend.

[0050] Based on the first embodiment, this embodiment introduces a specific structure of the connecting component 6 in the frame structure of a rail-type field 3D building printer, such as Figure 8 As shown, the inner walls on both sides of the installation cavity 20 are rotatably connected with the same bidirectional screw 29, and the outer wall of the bidirectional screw 29 is screwed with two threaded sleeves 30, the outer walls of the two threaded sleeves 30 are rotatably connected with a driving plate 31, and one end of the two driving plates 31 is rotatably connected to the sliding plate 21, the inner wall of the installation cavity 20 is fixedly connected with a servo motor 32, and a pulley 1 is fixedly connected to the output shaft of the servo motor 32, one end of the bidirectional screw 29 is fixedly connected with a pulley 2, and the same belt 33 is connected between the pulley 2 and the pulley 1, and the bidirectional screw 29 is driven to rotate by the servo motor 32. When the bidirectional screw 29 rotates, it directly drives the two threaded sleeves 30 to move toward or away from each other. When the two threaded sleeves 30 move away from each other, the prism 22 is directly pulled into the installation cavity 20 through the driving plate 31.

[0051] Working principle: When in use, the printer is conveniently installed through the setting of the crossbeam assembly 2, the two support mechanisms 1 are convenient for supporting the crossbeam assembly 2, the walking assembly 4 on the support frame 3 is convenient for driving the support frame 3 to move, and when the height of the crossbeam assembly 2 is adjusted, the servo motors 9 on the two support mechanisms 1 are directly driven, and when the servo motor 9 is started, the gear 2 12 is directly driven to rotate, and when the gear 2 12 rotates, the two gears 1 11 are directly driven to rotate, and when the gear 1 11 rotates, the two screw rods 7 are directly driven to rotate, and the two screw rods 7 rotate synchronously to directly drive the sliding seat 13 to move up and down, thereby conveniently driving the crossbeam assembly 2 to move up and down;

[0052] When the crossbeam assembly 2 needs to be disassembled, the prism 22 is directly driven into the installation cavity 20 through the adjustment assembly in the installation base 19, so as to facilitate the removal of the installation seat 17 from the support plate 14. When the prism 22 is adjusted, the electromagnet 27 in the installation tube 25 is energized to generate magnetism. The electromagnet 27 is energized to generate magnetism and directly attracts the armature 28 to move. When the armature 28 moves, it directly drives the driving column 26 to move. When the driving column 26 moves, it directly pulls the sliding plate 21 to compress the spring 1 24, or starts through the servo motor 32 to drive the bidirectional screw 29 to rotate. When the bidirectional screw 29 rotates, it directly drives the two threaded sleeves 30 to move toward or away from each other. When the two threaded sleeves 30 move away from each other, the prism 22 is directly pulled into the installation cavity 20 through the driving plate 31.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A frame structure of a rail-type field 3D building printer, comprising two supporting mechanisms (1), characterized in that: A common crossbeam assembly (2) is arranged between the two support mechanisms (1), and the support mechanism (1) comprises a trapezoidal structure support frame (3), the inner walls on both sides of the support frame (3) are fixedly connected to the same rectangular frame (5), and the inner wall of the rectangular frame (5) is slidably mounted with a connecting assembly (6), the connecting assembly (6) and the crossbeam assembly (2) are connected, the top outer wall of the support frame (3) is mounted with a driving assembly (8), and the top of the driving assembly (8) is mounted with a servo motor (9), the bottom inner wall and the top inner wall of the support frame (3) are rotatably connected with two screw rods (7), the connecting assembly (6) is connected to the screw rods (7), and the bottom outer wall of the support frame (3) is mounted with a walking assembly (4).

2. The frame structure of a rail-type field 3D building printer according to claim 1, characterized in that: The connecting assembly (6) comprises a sliding seat (13), and the sliding seat (13) is slidably connected to the inner wall of the rectangular frame (5), and a support plate (14) is fixedly connected to an outer wall of one side of the sliding seat (13).

3. The frame structure of a rail-type field 3D building printer according to claim 2, characterized in that: The sliding seat (13) is screwed onto the outer walls of the two screw rods (7), and two symmetrically arranged mounting components (15) are mounted on one side outer wall of the sliding seat (13).

4. The frame structure of a rail-type field 3D building printer according to claim 3, characterized in that: The driving assembly (8) comprises a driving box (10) fixedly connected to the top outer wall of the support frame (3), and the bottom inner wall of the driving box (10) is rotatably connected to two gears (11), and one end of the transmission shaft of the two gears (11) is respectively fixedly connected to the two screw rods (7).

5. The frame structure of a rail-type field 3D building printer according to claim 4, characterized in that: The inner wall at the bottom of the driving box (10) is rotatably connected to a second gear (12), and the second gear (12) and the two first gears (11) are meshed with each other, and the output shaft of the servo motor (9) is fixedly connected to the second gear (12).

6. The frame structure of a rail-type field 3D building printer according to claim 5, characterized in that: The crossbeam assembly (2) comprises a crossbeam frame (16), and the outer walls on both sides of the crossbeam frame (16) are fixedly connected to mounting seats (17), the cross section of the mounting seats (17) is a T-shaped structure, and the outer walls on both sides of the mounting seats (17) are provided with ridge grooves (18).

7. The frame structure of a rail-type field 3D building printer according to claim 6, characterized in that: A rectangular groove (34) is formed on one outer wall of the mounting seat (17), and a pressing block (35) is slidably connected to the inner wall of the rectangular groove (34), and a plurality of springs (36) are fixedly connected between the inner wall of the pressing block (35) and the pressing block (35).

8. The frame structure of the rail-type field 3D building printer according to claim 7, characterized in that: The mounting assembly (15) comprises a mounting base (19), and the mounting base (19) is fixedly connected to the outer wall of the sliding seat (13); an edge opening is provided on the inner wall of one side of the mounting cavity (20), and a prism (22) is slidably connected to the inner wall of the edge opening; the specification of the prism (22) matches the specification of the edge groove (18); and one end of the prism (22) is fixedly connected to the sliding plate (21).

9. The frame structure of a rail-type field 3D building printer according to claim 8, characterized in that: Two fixing rods (23) are fixedly connected to the inner wall of one side of the installation cavity (20), and the outer walls of the two fixing rods (23) are sleeved with springs 1 (24); the sliding plate (21) is slidably connected to the outer walls of the two fixing rods (23); a mounting tube (25) is fixedly connected to the inner wall of one side of the installation cavity (20), and a driving column (26) is slidably connected to the inner wall of the mounting tube (25); one end of the driving column (26) is fixedly connected to the sliding plate (21); an electromagnet (27) is fixedly connected to the inner wall of the mounting tube (25), and one end of the driving column (26) is fixedly connected to an armature (28) matching the electromagnet (27).

10. The frame structure of the rail-type field 3D building printer according to claim 8, characterized in that: The inner walls of both sides of the installation cavity (20) are rotatably connected to the same bidirectional screw (29), and the outer wall of the bidirectional screw (29) is screwed with two threaded sleeves (30), the outer walls of the two threaded sleeves (30) are rotatably connected to drive plates (31), and one end of the two drive plates (31) is rotatably connected to the sliding plate (21), the inner wall of the installation cavity (20) is fixedly connected to a servo motor (32), and a pulley 1 is fixedly connected to the output shaft of the servo motor (32), one end of the bidirectional screw (29) is fixedly connected to a pulley 2, and a same belt (33) is connected between the pulley 2 and the pulley 1.

Images