Pipe cutting equipment for building

By designing a pipe cutting equipment with a servo motor and annular airbag, the problem of frequent adjustment of the chain saw angle is solved, and production efficiency and pipe stability are improved.

CN119610256AInactive Publication Date: 2025-03-14四川省建筑机械化工程有限公司
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Patent Information

Application Number
CN202411781353.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-03-14
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the pipe cutting process, the angle of the chainsaw needs to be frequently adjusted, and the steps are cumbersome, which affects production efficiency.

Method used

A pipe cutting equipment for construction was designed, and a servo motor was used to drive the pipe to rotate by 180 degrees to ensure the direction of the cutting surface was opposite and reduce the need for chainsaw angle adjustment.

Benefits of technology

By reducing the steps of chainsaw angle adjustment, production efficiency is improved, and the pipe is fixed by reinforcement plates and airbags, the stability of the pipe and the cutting accuracy are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of pipe cutting, in particular to pipe cutting equipment for construction, which comprises a mounting box, a mounting frame, a hydraulic cylinder, an electric saw, an electric guide rail, a sliding frame and the like, the mounting frame is connected to the top of the mounting box, the hydraulic cylinder is mounted on the mounting frame, and the electric saw is rotatably connected to a telescopic rod of the hydraulic cylinder; electric guide rails are connected to the front side and the rear side of the top of the mounting box, and sliding blocks of the two electric guide rails are jointly connected with a sliding frame. A pipe can be cut through the electric saw, the pipe can be driven to rotate by 180 degrees through the output shaft of the servo motor, it is ensured that the directions of the cutting faces of the pipe are opposite, the angle of the electric saw does not need to be frequently adjusted, operation steps are reduced, and therefore the production efficiency can be improved.
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Description

Technical Field

[0001] The invention relates to the technical field of pipe cutting, and in particular to a pipe cutting device for construction. Background Art

[0002] Pipes are basic materials widely used in construction. They are used to construct various pipeline systems, such as water supply, drainage, heating, gas and other systems. In actual use, pipes are generally cut to meet different usage requirements.

[0003] When the pipe needs to be made into a vertical structure, the cut surface of the pipe will be cut into an oblique shape so that the two pipes can be correctly spliced. Different cutting machines are used according to different usage requirements. The bevel is cut using an angled pipe cutter. During the cutting process, the angle of the electric saw needs to be frequently adjusted to ensure that the cut surfaces of the pipe are in opposite directions. The steps are relatively cumbersome, which affects production efficiency. Summary of the invention

[0004] In order to overcome the disadvantage that the angle of the electric saw needs to be adjusted frequently during the cutting process, the steps are complicated, and thus the production efficiency is affected, the present invention provides a pipe cutting device for construction.

[0005] The technical scheme is as follows: a pipe cutting device for construction, including an installation box, an installation frame, a hydraulic cylinder, an electric saw, an electric guide rail, a sliding frame, a rotating shaft, a circular block, an annular airbag, a suction pump, a hard pipe, an air pipe, a transmission gear, a servo motor, an adjustment mechanism and a limit mechanism. The top of the installation box is connected to the installation frame, a hydraulic cylinder is installed on the installation frame, and an electric saw is rotatably connected to the telescopic rod of the hydraulic cylinder. The front and rear sides of the top of the installation box are connected to the electric guide rails, and the sliders of the two electric guide rails are commonly connected to the sliding frame. The sliding frame is evenly spaced and rotatably connected to three rotating shafts, and the rotating shafts are all connected to circular blocks, and the circular blocks are all connected to There is an annular airbag, a suction pump and a hard pipe are connected to the sliding frame, the suction end of the suction pump is connected to the hard pipe, three air pipes are connected to the hard pipe, the air pipes are connected to the circular block, and the air pipes are connected to the annular airbag, the suction pump injects air into the annular airbag to expand the annular airbag, the annular airbag contacts the inner wall of the pipe to fix the pipe, the rotating shaft is connected to a transmission gear, two adjacent transmission gears are meshed with each other, the sliding frame is connected to a servo motor, the output shaft of the servo motor is connected to the middle rotating shaft, the hydraulic cylinder is provided with an adjustment mechanism for adjusting the angle of the electric saw, and the mounting box is provided with a limiting mechanism for limiting the pipe.

[0006] Preferably, the adjustment mechanism includes a fixed gear, a stepper motor and a rotating gear, the telescopic rod of the hydraulic cylinder is connected to the fixed gear, the electric saw is connected to the stepper motor, the output shaft of the stepper motor is connected to the rotating gear, and the rotating gear is meshed with the fixed gear.

[0007] Preferably, the limiting mechanism includes a mounting plate, a first cylinder and a limiting plate. The mounting plate is connected to the top of the mounting box. Three first placement grooves for placing pipes are evenly spaced on the top of the mounting plate. Two first cylinders are installed on the mounting plate. The telescopic rods of the two first cylinders are commonly connected to a limiting plate for limiting the pipe.

[0008] Preferably, it also includes a fixed plate, a guide rod, a slide plate, a screw motor, a second cylinder and a reinforcement plate. The top of the installation box is connected to the fixed plate, a guide rod is connected between the fixed plate and the installation plate, the slide plate is slidably connected to the guide rod, and three second placement grooves for placing pipes are evenly spaced on the top of the slide plate. The fixed plate is installed with a screw motor, the screw of the screw motor is rotatably connected to the installation plate, the screw of the screw motor and the slide plate are connected by threads, two second cylinders are installed on the slide plate, and the telescopic rods of the two second cylinders are commonly connected to a reinforcement plate for reinforcing the pipe.

[0009] Preferably, a fixed material guide plate and a movable material guide plate are also included. The fixed material guide plate is connected to the top of the fixed plate, and the movable material guide plate is connected to the slide plate. The cut pipe will fall onto the movable material guide plate, and then the cut pipe will roll along the movable material guide plate to the fixed material guide plate.

[0010] Preferably, a box body and a collecting box are included, the mounting box is connected to the box body, the collecting box is placed inside the box body, the cut pipes will roll along the fixed material guide plate into the collecting box, and a discharge hole is opened at the bottom of the collecting box.

[0011] Preferably, it also includes an enclosure and a guide pipe, the top of the installation box is connected to the enclosure, a guide groove is opened in the enclosure, the bottom of the enclosure is connected to the guide pipe, the guide pipe and the guide groove are connected, the guide pipe runs through the installation box, the guide pipe is connected to the box body, and the guide pipe and the box body are connected.

[0012] Preferably, it also includes a feeding cylinder and a charging plate. Two feeding cylinders are installed in the installation box, and the charging plates are connected to the telescopic rods of the feeding cylinders.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can cut pipes by means of an electric saw, and the output shaft of the servo motor can drive the pipes to rotate 180 degrees to ensure that the cutting surfaces of the pipes are in opposite directions. There is no need to frequently adjust the angle of the electric saw, which reduces the number of operating steps and thus can improve production efficiency.

[0014] 2. The shortening of the telescopic rod of the second cylinder can drive the reinforcement plate to move downward, and the reinforcement plate can press the pipe to reinforce the pipe and improve the stability of the pipe.

[0015] 3. The cut pipes can be rolled along the movable guide plate and the fixed guide plate into the collection box for subsequent collection. The cutting fluid splashed when cutting the pipe will flow into the box to collect the cutting fluid and prevent it from spreading everywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0017] Figure 2 A partial three-dimensional structural schematic diagram of the present invention is shown.

[0018] Figure 3 The three-dimensional structural schematic diagram of the rotating shaft, circular block, annular airbag, suction pump, hard tube and trachea of ​​the present invention is shown.

[0019] Figure 4 A cross-sectional view of a circular block and an annular airbag of the present invention is shown.

[0020] Figure 5 A three-dimensional structural schematic diagram of the transmission gear and the servo motor of the present invention is shown.

[0021] Figure 6 The figure shows the state of the pipe after rotating 180 degrees.

[0022] Figure 7 A three-dimensional structural schematic diagram of the adjustment mechanism of the present invention is shown.

[0023] Figure 8 A three-dimensional structural schematic diagram of the limiting mechanism of the present invention is shown.

[0024] Fig. 9 A three-dimensional structural schematic diagram of the fixing plate, the guide rod and the sliding plate of the present invention is shown.

[0025] Fig.10 A schematic diagram of the three-dimensional structure of the second placement groove, the lead screw motor, the second cylinder and the reinforcement plate of the present invention is shown.

[0026] Fig.11 The three-dimensional structural schematic diagram of the fixed material guide plate, the movable material guide plate, the box body, the collecting box, the discharge hole and the enclosure plate of the present invention is shown.

[0027] Fig.12 A schematic diagram of the three-dimensional structure of the enclosure, guide groove and guide pipe of the present invention is shown.

[0028] Fig.13 The three-dimensional structural schematic diagram of the feeding cylinder and the charging plate of the present invention is shown.

[0029] Explanation of the accompanying drawings: 1. Installation box, 2. Installation frame, 3. Hydraulic cylinder, 4. Electric saw, 5. Electric guide rail, 6. Sliding frame, 7. Rotating shaft, 8. Round block, 9. Annular airbag, 10. Suction pump, 11. Hard pipe, 12. Air pipe, 13. Transmission gear, 14. Servo motor, 15. Fixed gear, 16. Stepper motor, 17. Rotating gear, 18. Installation plate, 181. First placement slot, 19. First cylinder, 20. Limiting plate, 21. Fixed plate, 22. Guide rod, 23. Slide plate, 231. Second placement slot, 24. Screw motor, 25. Second cylinder, 26. Reinforcement plate, 27. Fixed guide plate, 28. Movable guide plate, 29. Box body, 30. Collection box, 31. Discharge hole, 32. Enclosure, 321. Guide groove, 33. Guide pipe, 34. Feeding cylinder, 35. Loading plate. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Example 1: Figure 1-Figure 8 As shown, a pipe cutting device for construction includes an installation box 1, a mounting frame 2, a hydraulic cylinder 3, an electric saw 4, an electric guide rail 5, a sliding frame 6, a rotating shaft 7, a circular block 8, an annular airbag 9, a suction pump 10, a hard pipe 11, an air pipe 12, a transmission gear 13, a servo motor 14, an adjustment mechanism and a limit mechanism. The right side of the top of the installation box 1 is connected to the mounting frame 2 by bolts, the upper part of the mounting frame 2 is installed with a hydraulic cylinder 3 by bolts, the lower end of the telescopic rod of the hydraulic cylinder 3 is rotatably connected to the electric saw 4, the front and rear sides of the top of the installation box 1 are connected to the electric guide rails 5 by bolts, the tops of the sliders of the two electric guide rails 5 are commonly connected to the sliding frame 6, the upper part of the sliding frame 6 is evenly and rotatably connected with three rotating shafts 7, and the right ends of the rotating shafts 7 are connected to circular blocks 8. Annular air bags 9 are connected to the circular blocks 8, a suction pump 10 is installed on the top of the sliding frame 6 by bolts, a hard pipe 11 is connected to the upper right side of the sliding frame 6, the suction end of the suction pump 10 is connected to the hard pipe 11, and three air pipes 12 are evenly spaced and connected to the bottom of the hard pipe 11, the right end of the air pipe 12 is connected to the circular block 8, and the air pipe 12 is connected to the annular air bag 9, the left part of the rotating shaft 7 is connected to a transmission gear 13 by a key, and two adjacent transmission gears 13 are meshed with each other, a servo motor 14 is connected to the left side of the sliding frame 6 by bolts, and the output shaft of the servo motor 14 and the left end of the middle rotating shaft 7 are connected by a coupling, the hydraulic cylinder 3 is provided with an adjustment mechanism for adjusting the angle of the electric saw 4, and the installation box 1 is provided with a limiting mechanism for limiting the pipe.

[0032] like Figure 7As shown, the adjustment mechanism includes a fixed gear 15, a stepper motor 16 and a rotating gear 17. The lower part of the telescopic rod of the hydraulic cylinder 3 is connected to the fixed gear 15, and the upper right part of the electric saw 4 is connected to the stepper motor 16 by bolts. The output shaft of the stepper motor 16 is connected to the rotating gear 17 by a key, and the rotating gear 17 is meshed with the fixed gear 15.

[0033] like Figure 2 and Figure 8 As shown, the limiting mechanism includes a mounting plate 18, a first cylinder 19 and a limiting plate 20. The mounting plate 18 is connected to the right side of the top of the mounting box 1 by bolts. Three first placement grooves 181 are evenly spaced on the top of the mounting plate 18. The first cylinders 19 are installed on both the front and rear sides of the mounting plate 18 by bolts. The limiting plate 20 is commonly connected to the telescopic rods of the two first cylinders 19.

[0034] Initially, the telescopic rod of the first cylinder 19 is in an extended state. The staff puts the pipe into the first placement groove 181 and puts the pipe on the annular airbag 9. Then, the telescopic rod of the first cylinder 19 is controlled to shorten, driving the limit plate 20 to move downward so that the limit plate 20 limits the pipe. Then, the suction pump 10 is controlled to inject air into the hard tube 11. The air flows into the annular airbag 9 through the trachea 12 to expand the annular airbag 9. The annular airbag 9 contacts the inner wall of the pipe to fix the pipe. The output shaft of the stepper motor 16 is controlled to drive the rotating gear 17 to rotate. The rotating gear 17 rolls on the fixed gear 15, causing the electric saw 4 to rotate. The angle of the electric saw 4 can be adjusted according to the cutting angle of the pipe to meet different processing requirements. After adjusting the angle of the electric saw 4, the telescopic rod of the hydraulic cylinder 3 is controlled to extend, driving the electric saw 4 to move downward. The electric saw 4 limits the pipe. Cutting is carried out. After the cutting is completed, the telescopic rod of the hydraulic cylinder 3 is controlled to shorten, driving the electric saw 4 to move upward, resetting the electric saw 4, and then controlling the electric guide rail 5 to drive the sliding frame 6 to move to the right, the sliding frame 6 drives the rotating shaft 7 to move to the right, and the rotating shaft 7 drives the circular block 8 and the annular airbag 9 to move to the right for feeding. At the same time, the output shaft of the servo motor 14 is controlled to rotate 180 degrees, driving the middle rotating shaft 7 to rotate 180 degrees, and driving the other two rotating shafts 7 to rotate 180 degrees through the transmission gear 13. The rotating shaft 7 drives the circular block 8 and the annular airbag 9 to rotate, thereby driving the pipe to rotate 180 degrees to ensure that the cutting surface of the pipe is in the opposite direction. There is no need to frequently adjust the angle of the electric saw 4, reducing the operating steps, thereby improving production efficiency. After the pipe has rotated 180 degrees, repeat the above operation and continue to cut the pipe. If the cutting surface of the pipe is straight, the pipe does not need to be rotated.

[0035] Embodiment 2: Based on embodiment 1, Fig. 9 and Fig.10As shown, it also includes a fixed plate 21, a guide rod 22, a slide plate 23, a screw motor 24, a second cylinder 25 and a reinforcement plate 26. The fixing plate 21 is connected to the right side of the top of the installation box 1 by bolts, and the fixing plate 21 is located on the right side of the mounting plate 18. A guide rod 22 is connected between the fixing plate 21 and the mounting plate 18, and a slide plate 23 is slidably connected to the guide rod 22. Three second placement grooves 231 are evenly spaced on the top of the slide plate 23. A screw motor 24 is installed at the front of the fixed plate 21. The screw of the screw motor 24 is rotatably connected to the mounting plate 18, and the screw of the screw motor 24 is connected to the slide plate 23 by threads. The second cylinder 25 is installed on both the front and rear sides of the slide plate 23 by bolts, and the telescopic rods of the two second cylinders 25 are commonly connected to the reinforcement plate 26.

[0036] Initially, the telescopic rod of the second cylinder 25 is in an extended state, and the staff controls the screw motor 24 to drive the slide plate 23 to move to the right and adjust the distance between the slide plate 23 and the mounting plate 18. The distance between the slide plate 23 and the mounting plate 18 can be adjusted according to the cutting length of the pipe to adapt to different processing requirements. The pipe is then placed in the first placement groove 181 and the second placement groove 231, and the telescopic rod of the second cylinder 25 is controlled to shorten, driving the reinforcement plate 26 to move downward. The reinforcement plate 26 presses the pipe to reinforce the pipe and improve the stability of the pipe.

[0037] like Fig.11 As shown, it also includes a fixed material guide plate 27 and a movable material guide plate 28. The fixed material guide plate 27 is connected to the middle of the top of the fixed plate 21 by bolts, and the movable material guide plate 28 is connected to the upper right side of the slide plate 23 by bolts.

[0038] like Fig.11 As shown, it also includes a box body 29 and a collection box 30. The box body 29 is connected to the right side of the installation box 1 by bolts. The collection box 30 is placed in the box body 29. The bottom of the collection box 30 has discharge holes 31 evenly spaced.

[0039] like Fig.11 and Fig.12 As shown, it also includes a surrounding plate 32 and a guide pipe 33. The surrounding plate 32 is connected to the right side of the top of the installation box 1. A guide groove 321 is opened on the front side of the surrounding plate 32. The guide pipe 33 is connected to the front side of the bottom of the surrounding plate 32. The guide pipe 33 is connected to the guide groove 321. The guide pipe 33 runs through the installation box 1. The right side of the guide pipe 33 is connected to the left side of the box body 29, and the guide pipe 33 is connected to the box body 29.

[0040] The cut pipe will fall onto the movable guide plate 28, and then the cut pipe will roll onto the fixed guide plate 27, and roll along the fixed guide plate 27 to the collection box 30 for subsequent collection. Cutting fluid will be sprayed when the pipe is cut, and the cutting fluid will also flow into the collection box 30 along the movable guide plate 28 and the fixed guide plate 27, and then the cutting fluid will flow into the box body 29 through the discharge hole 31. Part of the cutting fluid will fall onto the installation box 1, and the enclosure 32 can block the cutting fluid on the installation box 1. The cutting fluid on the installation box 1 will flow into the guide groove 321, and then the cutting fluid will flow into the box body 29 through the guide pipe 33, and the cutting fluid will be collected to prevent the cutting fluid from flowing everywhere.

[0041] like Fig.13 As shown, it also includes a feeding cylinder 34 and a loading plate 35. The feeding cylinder 34 is installed on both sides of the top of the installation box 1 through bolts, and the upper end of the telescopic rod of the feeding cylinder 34 is connected to the loading plate 35.

[0042] The staff puts the pipes on the two loading plates 35. After the pipes in the first placement slot 181 are cut, the electric guide rail 5 is controlled to drive the sliding frame 6 to move left and reset, and then the telescopic rod of the loading cylinder 34 is controlled to extend to drive the loading plate 35 to move upward. The loading plate 35 drives the pipes to move upward for easy loading. The loading plate 35 can support the pipes, making it convenient for the staff to place the pipes in the first placement slot 181.

[0043] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A pipe cutting device for construction, comprising a mounting box (1), a mounting frame (2), a hydraulic cylinder (3) and an electric saw (4), wherein the top of the mounting box (1) is connected to the mounting frame (2), the hydraulic cylinder (3) is mounted on the mounting frame (2), and the electric saw (4) is rotatably connected to the telescopic rod of the hydraulic cylinder (3), wherein: The installation box (1) also includes an electric guide rail (5), a sliding frame (6), a rotating shaft (7), a circular block (8), an annular airbag (9), a suction pump (10), a hard pipe (11), an air pipe (12), a transmission gear (13), a servo motor (14), an adjustment mechanism and a limit mechanism. The front and rear sides of the top of the installation box (1) are connected to the electric guide rails (5), the sliders of the two electric guide rails (5) are commonly connected to the sliding frame (6), the sliding frame (6) is evenly spaced and rotatably connected with three rotating shafts (7), the rotating shafts (7) are all connected to the circular blocks (8), the circular blocks (8) are all connected to the annular airbags (9), the sliding frame (6) is connected to the suction pump (10) and the hard pipe (11), the suction end of the suction pump (10) and the hard pipe (11) are connected to the suction end of the suction pump (10) and the hard pipe (11). ), the hard tube (11) is connected with three air tubes (12), the air tubes (12) are connected with the circular block (8), and the air tubes (12) are connected with the annular airbag (9), the suction pump (10) injects air into the annular airbag (9) to expand the annular airbag (9), the annular airbag (9) contacts with the inner wall of the pipe material, and the pipe material is fixed, the rotating shaft (7) is connected with a transmission gear (13), two adjacent transmission gears (13) are meshed with each other, the sliding frame (6) is connected with a servo motor (14), the output shaft of the servo motor (14) is connected with the middle rotating shaft (7), the hydraulic cylinder (3) is provided with an adjustment mechanism for adjusting the angle of the electric saw (4), and the installation box (1) is provided with a limiting mechanism for limiting the pipe material.

2. The pipe cutting equipment for construction according to claim 1, characterized in that: The adjusting mechanism comprises a fixed gear (15), a stepping motor (16) and a rotating gear (17); the telescopic rod of the hydraulic cylinder (3) is connected with the fixed gear (15); the electric saw (4) is connected with the stepping motor (16); the output shaft of the stepping motor (16) is connected with the rotating gear (17); and the rotating gear (17) is meshed with the fixed gear (15).

3. The pipe cutting equipment for construction according to claim 2, characterized in that: The limiting mechanism comprises a mounting plate (18), a first cylinder (19) and a limiting plate (20); the top of the mounting box (1) is connected to the mounting plate (18); the top of the mounting plate (18) has three first placement grooves (181) for placing pipes evenly spaced apart; two first cylinders (19) are mounted on the mounting plate (18); the telescopic rods of the two first cylinders (19) are commonly connected to a limiting plate (20) for limiting the position of the pipes.

4. The pipe cutting equipment for construction according to claim 3 is characterized by: The invention also comprises a fixing plate (21), a guide rod (22), a slide plate (23), a screw motor (24), a second air cylinder (25) and a reinforcing plate (26). The fixing plate (21) is connected to the top of the installation box (1). The guide rod (22) is connected between the fixing plate (21) and the installation plate (18). The slide plate (23) is slidably connected to the guide rod (22). Three second placement grooves (231) for placing pipes are evenly spaced at the top of the slide plate (23). The fixing plate (21) is mounted with a screw motor (24). The screw of the screw motor (24) is rotatably connected to the installation plate (18). The screw of the screw motor (24) is connected to the slide plate (23) by threads. Two second air cylinders (25) are mounted on the slide plate (23). The telescopic rods of the two second air cylinders (25) are commonly connected to a reinforcing plate (26) for reinforcing the pipes.

5. The pipe cutting equipment for construction according to claim 4 is characterized in that: The invention also comprises a fixed material guide plate (27) and a movable material guide plate (28). The top of the fixed plate (21) is connected to the fixed material guide plate (27), and the slide plate (23) is connected to the movable material guide plate (28). The cut pipe material will fall onto the movable material guide plate (28), and then the cut pipe material will roll along the movable material guide plate (28) to the fixed material guide plate (27).

6. The pipe cutting equipment for construction according to claim 5, characterized in that: The invention also comprises a box body (29) and a collection box (30). The installation box (1) is connected to the box body (29), and the collection box (30) is placed in the box body (29). The cut pipes will roll along the fixed material guide plate (27) into the collection box (30), and a discharge hole (31) is opened at the bottom of the collection box (30).

7. A pipe cutting device for construction according to claim 6, characterized in that: The utility model also comprises a surrounding plate (32) and a flow guide pipe (33); the top of the installation box (1) is connected to the surrounding plate (32); a flow guide groove (321) is opened in the surrounding plate (32); the bottom of the surrounding plate (32) is connected to the flow guide pipe (33); the flow guide pipe (33) and the flow guide groove (321) are connected; the flow guide pipe (33) passes through the installation box (1); the flow guide pipe (33) and the box body (29) are connected; and the flow guide pipe (33) and the box body (29) are connected.

8. The pipe cutting equipment for construction according to claim 7, characterized in that: It also comprises a feeding cylinder (34) and a charging plate (35). Two feeding cylinders (34) are installed in the installation box (1), and the charging plates (35) are connected to the telescopic rods of the feeding cylinders (34).