Reinforcing steel bar butt welding device for house building

By designing a steel bar butt welding device for building construction including sliding plates, fixed plates, connecting rod components and cylinder drive system, the problems of inaccurate butt welding, incomplete welding and unfast cooling of steel bars in the prior art are solved, and automatic centering, clamping and rapid cooling of steel bars are realized, which significantly improves welding quality and efficiency.

CN222919894UActive Publication Date: 2025-05-30POWERCHINA HUADONG ENG CORP LTD +1
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Patent Information

Application Number
CN202421169525.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-27
Publication Date
2025-05-30
Estimated Expiration
2034-05-27

AI Technical Summary

Technical Problem

The existing steel bar butt welding device cannot accurately butt and fix the two steel bars during the welding process, the welding joints fail to achieve comprehensive welding, and cannot quickly cool after welding, resulting in low quality and welding efficiency of the steel bars.

Method used

A steel bar butt welding device for building a house is designed, using sliding plates, fixed plates, connecting rod components and cylinder drive system to realize automatic neutralization and clamping of steel bars, and improve welding quality and efficiency through rotary welding joints and rapid cooling systems.

Benefits of technology

The device can automatically center the steel bars, ensure the accuracy and stability of welding, realize full coverage welding of the welded joints to the steel bars, and improve the quality and welding efficiency of the steel bars through rapid cooling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a house building reinforcing steel bar butt welding device which is characterized in that the left side and the right side of the top of a box body are both connected with sliding plates in a sliding mode, the tops of the sliding plates are fixedly connected with fixing discs, the close sides of the fixing discs are both connected with connecting rod assemblies in a rotating mode, and the outer portions of the connecting rod assemblies are fixedly connected with fixing discs; and the exterior of the fixed disc is fixedly connected with fixed circular rings, limiting pieces are arranged outside the connecting rod assembly, and the close sides of the multiple fixed circular rings are fixedly connected with a sliding block. According to the reinforcing steel bar butt welding device, reinforcing steel bars can be automatically centered, the reinforcing steel bars can be effectively clamped, the stability of the reinforcing steel bars is kept, and then the reinforcing steel bar butt welding quality can be greatly improved; the welding head of the reinforcing steel bar butt welding device can rotate around the reinforcing steel bar, then butt welding of the reinforcing steel bar is firmer and more comprehensive, the welded reinforcing steel bar can be rapidly cooled through the reinforcing steel bar butt welding device, and then the quality and welding efficiency of the reinforcing steel bar can be greatly improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a butt welding device for steel bars used in building construction. Background Art

[0002] Steel bars are commonly used materials in construction. For mass production of prefabricated steel bars of the same specification, a steel bar butt welder is often used for batch production, and then transported to the construction site for construction. However, due to uncontrollable factors at the construction site, errors will occur in on-site construction. At the same time, errors are inevitable during the steel bar cutting process, resulting in insufficient steel bar length. Therefore, on the construction site, it is often necessary to manually trim and weld the steel bars. When building houses, it is often necessary to weld the steel bars to meet the requirements of house construction.

[0003] However, some existing steel bar butt welding devices fail to accurately align two steel bars during the welding process and fail to fix the steel bars. In addition, the welding heads of the existing unstable steel bar butt welding devices fail to fully weld the steel bars. Some existing steel bar butt welding devices fail to achieve rapid cooling after welding. Therefore, in view of the above deficiencies, a butt welding device for steel bars used in building construction is proposed.

[0004] Based on the above situation, the utility model proposes a butt welding device for steel bars used in building construction to effectively solve the above problems. Content of the Utility Model

[0005] In order to solve the problems in the background art, the utility model provides a butt welding device for steel bars used in building construction.

[0006] The utility model adopts the following technical scheme:

[0007] A butt welding device for steel bars used in building construction includes a box body. The left and right sides of the top of the box body are both slidably connected with sliding plates. A fixed disk is fixedly connected to the top of the sliding plates. The adjacent sides of the fixed disks are both rotatably connected with a connecting rod assembly. The outside of the connecting rod assembly is fixedly connected with a fixed disk. The outside of the fixed disk is fixedly connected with a fixed ring. A limiting piece is arranged outside the connecting rod assembly. The adjacent sides of multiple fixed rings are fixedly connected with sliding blocks. The outside of multiple sliding blocks is slidably connected with a fixed block. A first limiting plate is arranged on the adjacent side of multiple sliding blocks. A fixed wheel is rotatably connected to the adjacent side of the first limiting plate. A second limiting plate is arranged outside multiple sliding blocks. The adjacent sides of two fixed disks are both rotatably connected with a fourth rotating shaft. A driving assembly is arranged at the rear side of the fourth rotating shaft. The top of the driving assembly is rotatably connected with a fourth rotating rod. A power assembly is arranged on the right side inside the box body. Threaded frames are connected to both sides of the power assembly.

[0008] Further, the connecting rod assembly includes a first rotating shaft, a first rotating rod, a second rotating shaft, a second rotating rod, a third rotating rod and a third rotating shaft. A plurality of first rotating shafts are rotatably connected to the adjacent sides of the fixed disk. A first rotating rod is rotatably connected to the outside of each of the plurality of first rotating shafts. A second rotating shaft is rotatably connected to the opposite sides of the plurality of first rotating rods. A second rotating rod is rotatably connected to the top of each of the plurality of second rotating shafts. A third rotating shaft is rotatably connected to the top of the plurality of second rotating rods. A third rotating rod is rotatably connected to the adjacent sides of the plurality of third rotating shafts. A limiting piece is fixedly connected to the outside of the first rotating shaft.

[0009] Further, a fixed box is provided at the center of the top of the box body. A second cylinder is fixedly connected to the front side inside the fixed box. A rack plate is provided at the output end of the second cylinder. A plurality of fifth rotating rods are slidably connected to the inside of the fixed box. A gear is connected to the outside of each of the plurality of fifth rotating rods. The rack plate is meshed with the gear. A welding head is provided on the top side inside the gear.

[0010] Further, a transmission pipe is provided inside the fixed box. Nozzles are provided on the left and right sides of the bottom of the transmission pipe. A delivery pipe is provided on the front side of the bottom of the transmission pipe. The front side inside the box body is connected to a water tank. A water pump is provided inside the water tank. The output end of the water pump is connected to an output pipe. The input end of the welding head is connected to an intake pipe.

[0011] Further, the driving assembly includes a first cylinder. The front side of the first cylinder is rotatably connected to the rear side of the fourth rotating shaft. The output end of the first cylinder is connected to a push rod. The rear side of the push rod is rotatably connected to a fifth rotating shaft. The top of the fifth rotating shaft is rotatably connected to a fourth rotating rod.

[0012] Further, the power assembly includes a housing. The top of the housing is connected to the bottom side inside the box body. A motor is provided inside the housing. The output end of the motor is connected to a threaded rod.

[0013] Further, the outside of the second rotating shaft is rotatably connected to the inside of the fixed disk. The outside of the third rotating shaft is rotatably connected to the inside of the fixed disk.

[0014] Further, the top of the fourth rotating rod is fixedly connected to the bottom of the first rotating rod. The top of the fourth rotating rod is connected to the bottom of one of the first rotating shafts. The fixed block is slidably connected to the outside of the fixed disk.

[0015] Further, the top side of the outside of the threaded frame is slidably connected to the top of the box body. The outside of the threaded rod is rotatably connected to the inside of the box body.

[0016] Further, the outer part of the rack plate is slidably connected to the inside of the fixed box, and the bottom of the conveying pipe is fixedly connected to the top of the output pipe; the outer part of the conveying pipe is connected to the inside of the water tank, and the outer part of the conveying pipe is connected to the inside of the fixed box.

[0017] A steel bar butt welding device for building construction provided by the present utility model: In this steel bar butt welding device, the steel bars can be automatically centered, and the steel bars can be effectively clamped to maintain their stability, thereby greatly improving the quality of steel bar butt welding; the welding head of this steel bar butt welding device can rotate around the steel bar, making the butt welding of the steel bar firmer and more comprehensive. This steel bar butt welding device can quickly cool the welded steel bars, thereby greatly improving the quality and welding efficiency of the steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the fixed disk of the present utility model;

[0020] Figure 3 is Figure 2 an enlarged view of part A in

[0021] Figure 4 is a schematic diagram of the internal structure of the box body of the present utility model;

[0022] Figure 5 is a schematic diagram of the internal structure of the housing structure of the present utility model;

[0023] Figure 6 is a schematic diagram of the internal structure of the water tank of the present utility model.

[0024] The numbers marked in the figure are successively represented as: 1, box body; 2, sliding plate; 3, fixed disk; 4, first rotating shaft; 5, fixed circular disk; 6, fixed ring; 7, limiting piece; 8, first rotating rod; 9, second rotating shaft; 10, second rotating rod; 11, third rotating rod; 12, third rotating shaft; 13, sliding block; 14, fixed block; 15, first limiting plate; 16, fixed wheel; 17, second limiting plate; 18, fourth rotating shaft; 19, first cylinder; 20, push rod; 21, fifth rotating shaft; 22, fourth rotating rod; 23, housing; 24, motor; 25, threaded rod; 26, threaded frame; 27, fixed box; 28, second cylinder; 29, rack plate; 30, fifth rotating rod; 31, gear; 32, welding head; 33, transmission pipe; 34, spray head; 35, conveying pipe; 36, water tank; 37, water pump; 38, output pipe; 39, air inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Referring to Figures 1-3 , an embodiment provided by the present invention: a steel bar butt welding device for building construction, which includes a box body 1. Both the left and right sides of the top of the box body 1 are slidably connected with sliding plates 2. A fixed disk 3 is fixedly connected to the top of the sliding plate 2. A plurality of first rotating shafts 4 are rotatably connected to the adjacent sides of the fixed disk 3. A fixed disk 5 is fixedly connected to the outer part of the first rotating shaft 4. A fixed ring 6 is fixedly connected to the outer part of the fixed disk 5. Two limiting pieces 7 are fixedly connected to the outer part of the first rotating shaft 4. Two first rotating rods 8 are rotatably connected to the outer parts of a plurality of first rotating shafts 4. The far sides of a plurality of first rotating rods 8 are rotatably connected with second rotating shafts 9. The tops of a plurality of second rotating shafts 9 are rotatably connected with second rotating rods 10. The tops of a plurality of second rotating rods 10 are rotatably connected with a third rotating shaft 12. The adjacent sides of a plurality of third rotating shafts 12 are rotatably connected with third rotating rods 11. Here, it is designed that the two third rotating rods 11 rotatably connected to the left and right sides of the first rotating shaft 4 are fixedly connected.

[0027] The adjacent sides of a plurality of fixed rings 6 are fixedly connected with sliding blocks 13. The outer parts of a plurality of sliding blocks 13 are slidably connected with a fixed block 14. Two first limiting plates 15 are fixedly connected to the adjacent sides of a plurality of sliding blocks 13. A fixed wheel 16 is rotatably connected to the adjacent sides of the two first limiting plates 15. A second limiting plate 17 is fixedly connected to the outer part of a plurality of sliding blocks 13. The adjacent sides of the two fixed disks 3 are rotatably connected with a fourth rotating shaft 18.

[0028] A driving assembly is arranged at the rear side of the fourth rotating shaft 18. The driving assembly includes a first cylinder 19. The front side of the first cylinder 19 is rotatably connected to the rear side of the fourth rotating shaft 18. A push rod 20 is fixedly connected to the output end of the first cylinder 19. Through the push of the first cylinder 19, the fourth rotating rod 22 can be displaced by the push rod 20, and then the fixed disk 5 and the fixed ring 6 can be displaced, and then the sliding block 13 can slide inside the fixed block 14, and then the clamping and centering of the steel bar can be realized through the fixed wheel 16.

[0029] Specifically, starting the first cylinder 19 can displace the fifth rotating shaft 21, and then the fourth rotating rod 22 and the first rotating rod 8 can rotate around the first rotating shaft 4. At this time, the second rotating rod 10 on the upper side of the first rotating rod 8 will be displaced, and then the third rotating rod 11 can rotate around the first rotating shaft 4. Similarly, the second rotating rod 10 on the other side can be driven to be displaced, and then the A component on the other side can move towards the middle, so as to realize clamping. At the same time, the above three sets of clamping arm components A are in the internal clamping state at this time.

[0030] The rear side of the push rod 20 is rotatably connected to a fifth rotating shaft 21. The top of the fifth rotating shaft 21 is rotatably connected to a fourth rotating rod 22. The top of the driving assembly is rotatably connected to the fourth rotating rod 22. The fourth rotating rod 22 and the first rotating rod 8 are fixedly connected. A power assembly is arranged on the right side inside the box body 1.

[0031] The power assembly includes a housing 23. The top of the housing 23 is fixedly connected to the inner bottom side of the box body 1. A motor 24 is installed inside the housing 23. The output end of the motor 24 is fixedly connected to a threaded rod 25. Threaded frames 26 are threadedly connected to both the left and right sides of the power assembly. By rotating the output end of the motor 24, the threaded rod 25 can be driven to rotate, and then the threaded frames 26 can be displaced.

[0032] The forward and reverse rotation of the motor 24 is controlled by operation. By controlling the displacement of the fixed disk 3 to adapt to reinforcing bars of different lengths for clamping, the welding joints of the two reinforcing bars can be made to contact each other. When the positions of the two reinforcing bars are aligned, no further control is required. In the attached drawings of the specification Figure 2 the structural movement state is the internal clamping state.

[0033] Refer to Figures 4-6 , a fixed box 27 is fixedly connected to the middle side of the top of the box body 1. A second cylinder 28 is fixedly connected to the front side inside the fixed box 27. The output end of the second cylinder 28 is fixedly connected to a rack plate 29. A plurality of fifth rotating rods 30 are slidably connected inside the fixed box 27. Gears 31 are fixedly connected to the outside of the plurality of fifth rotating rods 30. The rack plate 29 and the gears 31 are meshed. A welding head 32 is fixedly connected to the inner top side of the gear 31.

[0034] By pushing the rack plate 29 to displace through the second cylinder 28, the gears 31 can be rotated by means of the meshing between the rack plate 29 and the gears 31, and then the welding head 32 can be rotated, so as to make the welding of the reinforcing bars more comprehensive.

[0035] A transmission pipe 33 is fixedly connected inside the fixed box 27. Spray heads 34 are fixedly connected to both the left and right sides of the bottom of the transmission pipe 33. A delivery pipe 35 is fixedly connected to the front side of the bottom of the transmission pipe 33. A water tank 36 is fixedly connected to the front side inside the box body 1. A water pump 37 is fixedly connected inside the water tank 36. The output end of the water pump 37 is fixedly connected to an output pipe 38.

[0036] The water inside the water tank 36 can be conveyed to the inside of the transmission pipe 33 through the delivery pipe 35 by the water pump 37. The water pump 37 is powered on after the welding is completed, so that the spray heads 34 can spray water. An air inlet pipe 39 is fixedly connected to the input end of the welding head 32. The air inlet pipe 39 can surround the outside of the gear 31 without entanglement, and can supply air to the welding head 32 for welding operations.

[0037] Reference Figures 3-4 Figures 3-4 The outer part of the second rotating shaft 9 is rotatably connected to the inside of the fixed disk 3, the outer part of the third rotating shaft 12 is rotatably connected to the inside of the fixed disk 3, the top of the fourth rotating rod 22 is fixedly connected to the bottom of the first rotating rod 8, the top of the fourth rotating rod 22 is fixedly connected to the bottom of a first rotating shaft 4, the fixed block 14 is slidably connected to the outside of the fixed disk 3 to cooperate with the displacement of the sliding block 13, the top side of the outer part of the threaded frame 26 is slidably connected to the top of the box body 1, the outer part of the threaded rod 25 is rotatably connected to the inside of the box body 1, the outer part of the rack plate 29 is slidably connected to the inside of the fixed box 27, the bottom of the conveying pipe 35 is fixedly connected to the top of the output pipe 38, the outer part of the conveying pipe 35 is fixedly connected to the inside of the water tank 36, and the outer part of the conveying pipe 35 is fixedly connected to the inside of the fixed box 27.

[0038]

[0038] Working principle: First, the construction workers can pass two steel bars to be welded through the inside of the fixed disk 3, and then start the first cylinder 19. By pushing the push rod 20 through the output end of the first cylinder 19, the fourth rotating rod 22 can be displaced. At this time, by means of the rotation between the fourth rotating rod 22 and the first rotating shaft 4 and between the limiting piece 7 and the first rotating shaft 4, the second rotating rod 10 can be displaced. As the second rotating rod 10 is displaced, the fixed disk 5 can be rotated, and then the sliding block 13 can be pushed by means of the fixed ring 6, and then the fixed wheel 16 can be displaced. At this time, the steel bars can be centered and clamped by the fixed wheel 16. Then, the motor 24 can be started. By the rotation of the output end of the motor 24, the threaded rod 25 can be displaced, and at this time, the threaded frame 26 will be displaced, and then the two fixed disks 3 will move towards each other, and then the two steel bars will come into contact. At this time, the second cylinder 28 can be started. By the push of the output end of the second cylinder 28, the rack plate 29 can be displaced. At this time, by means of the meshing between the rack plate 29 and the gear 31, the gear 31 can be rotated, and then the welding head 32 can be started to rotate through the welding head 32, and then the steel bars can be butt-welded. When the welding is completed, the water pump 37 can be started. The water inside the water tank 36 is sucked by the water pump 37 from the output pipe 38 and then passes through the transmission pipe 33, and the welded steel bars can be quickly cooled through the nozzle 34.

[0039]

[0039] Through the combined use of structures such as the first rotating shaft 4, the fixed disk 5, the fixed ring 6, the limiting piece 7, the first rotating rod 8, the second rotating shaft 9, the second rotating rod 10, the third rotating rod 11, the third rotating shaft 12, the sliding block 13, the fixed block 14, the first limiting plate 15, the fixed wheel 16, the second limiting plate 17, the fourth rotating shaft 18, and the first cylinder 19, the steel bars in this steel bar butt-welding device can be automatically centered and can effectively clamp the steel bars to maintain their stability, and thus the quality of steel bar butt-welding can be greatly improved.

[0040] Through the coordinated use of structures such as the second cylinder 28, the rack plate 29, the fifth rotating rod 30, the gear 31, and the welding head 32, the welding head of this steel bar butt welding device can rotate around the steel bar, thereby making the butt welding of the steel bar firmer and more comprehensive.

[0041] Through the coordinated use of structures such as the transfer pipe 33, the spray head 34, the delivery pipe 35, the water tank 36, the water pump 37, and the output pipe 38, this steel bar butt welding device can rapidly cool the welded steel bar, thereby greatly improving the quality and welding efficiency of the steel bar.

[0042] Note that the above is only the preferred embodiment of the present utility model and the technical principles applied. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments. Without departing from the concept of the present utility model, it can also include more other equivalent embodiments, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. A steel bar butt welding device for building construction, comprising a box (1), characterized in that: The left and right sides of the top of the box body (1) are slidably connected to sliding plates (2), the top of the sliding plate (2) is fixedly connected to a fixed disk (3), the adjacent sides of the fixed disk (3) are rotatably connected to the connecting rod assembly, the outside of the connecting rod assembly is fixedly connected to the fixed disk (5), the outside of the fixed disk (5) is fixedly connected to the fixed ring (6), the outside of the connecting rod assembly is provided with a limit plate (7), the adjacent sides of the plurality of fixed rings (6) are fixedly connected to the sliding blocks (13), the outsides of the plurality of sliding blocks (13) are slidably connected to the fixed blocks (14), and the plurality of A first limiting plate (15) is provided on the adjacent side of the sliding block (13), and the adjacent side of the first limiting plate (15) is rotatably connected to the fixed wheel (16). A second limiting plate (17) is provided on the outside of the plurality of sliding blocks (13). The adjacent sides of the two fixed plates (3) are rotatably connected to a fourth rotating shaft (18). A driving assembly is provided on the rear side of the fourth rotating shaft (18), and the top of the driving assembly is rotatably connected to a fourth rotating rod (22). A power assembly is provided on the right side inside the box body (1), and both sides of the power assembly are connected to a threaded frame (26).

2. A steel bar butt welding device for building construction according to claim 1, characterized in that: The connecting rod assembly comprises a first rotating shaft (4), a first rotating rod (8), a second rotating shaft (9), a second rotating rod (10), a third rotating rod (11) and a third rotating shaft (12); the adjacent sides of the fixed plate (3) are rotatably connected to a plurality of first rotating shafts (4); the exteriors of the plurality of first rotating shafts (4) are rotatably connected to the first rotating rods (8); the distant sides of the plurality of first rotating rods (8) are rotatably connected to the second rotating shafts (9); the tops of the plurality of second rotating shafts (9) are rotatably connected to the second rotating rods (10); the tops of the plurality of second rotating rods (10) are rotatably connected to the third rotating shafts (12); the adjacent sides of the plurality of third rotating shafts (12) are rotatably connected to the third rotating rods (11); and the exteriors of the first rotating shafts (4) are fixedly connected to the limiting plate (7).

3. A steel bar butt welding device for building construction according to claim 1, characterized in that: A fixed box (27) is provided at the top center of the box body (1); a second cylinder (28) is fixedly connected to the front side of the fixed box (27); a rack plate (29) is provided at the output end of the second cylinder (28); a plurality of fifth rotating rods (30) are slidably connected to the inside of the fixed box (27); the outsides of the plurality of fifth rotating rods (30) are connected to gears (31); the rack plate (29) and the gears (31) are meshingly connected; a welding head (32) is provided on the top side of the gears (31).

4. A steel bar butt welding device for building construction according to claim 3, characterized in that: A transmission pipe (33) is provided inside the fixed box (27), nozzles (34) are provided on both left and right sides of the bottom of the transmission pipe (33), a delivery pipe (35) is provided on the front side of the bottom of the transmission pipe (33), the front side of the interior of the box body (1) is connected to a water tank (36), a water pump (37) is provided inside the water tank (36), the output end of the water pump (37) is connected to an output pipe (38), and the input end of the welding head (32) is connected to an air intake pipe (39).

5. The steel bar butt welding device for building construction according to claim 1 is characterized in that: The driving assembly comprises a first cylinder (19), the front side of the first cylinder (19) is rotatably connected to the rear side of the fourth rotating shaft (18), the output end of the first cylinder (19) is connected to a push rod (20), the rear side of the push rod (20) is rotatably connected to a fifth rotating shaft (21), and the top of the fifth rotating shaft (21) is rotatably connected to a fourth rotating rod (22).

6. A steel bar butt welding device for building construction according to claim 1, characterized in that: The power assembly comprises a housing (23), the top of the housing (23) being connected to the inner bottom side of the box body (1), a motor (24) being arranged inside the housing (23), and an output end of the motor (24) being connected to a threaded rod (25).

7. A steel bar butt welding device for building construction according to claim 2, characterized in that: The outer portion of the second rotating shaft (9) is rotationally connected to the interior of the fixed disk (3), and the outer portion of the third rotating shaft (12) is rotationally connected to the interior of the fixed disk (3).

8. The steel bar butt welding device for building construction according to claim 4, characterized in that: The top of the fourth rotating rod (22) is fixedly connected to the bottom of the first rotating rod (8), the top of the fourth rotating rod (22) is connected to the bottom of a first rotating shaft (4), and the fixing block (14) is slidably connected to the outside of the fixing plate (3).

9. A steel bar butt welding device for building construction according to claim 5, characterized in that: The outer top side of the threaded frame (26) is slidably connected to the top of the box body (1), and the outer side of the threaded rod (25) is rotationally connected to the inside of the box body (1).

10. A steel bar butt welding device for building construction according to claim 4, characterized in that: The outside of the rack plate (29) is slidably connected to the inside of the fixed box (27), and the bottom of the delivery pipe (35) is fixedly connected to the top of the output pipe (38); the outside of the delivery pipe (35) is connected to the inside of the water tank (36), and the outside of the delivery pipe (35) is connected to the inside of the fixed box (27).

Citation Information

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