A cutting machine for large diameter concrete pipes
By designing a cutting machine suitable for large-diameter concrete pipes, and utilizing the combination of adjustment components and motors, the problems of slow cutting speed and poor quality in existing technologies have been solved, achieving efficient and stable cutting results and reducing manual labor intensity and costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 浙江省第一水电建设集团股份有限公司
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-24
AI Technical Summary
Existing pipe cutting machines are not suitable for cutting large-diameter reinforced concrete pipes. They are slow, prone to blade jamming, and result in severe misalignment of the pipe ends after cutting, which compromises quality, leading to project delays and increased costs.
A large-diameter concrete pipe cutting machine has been designed, comprising an adjustment assembly including a positioning seat, an adjustment limit plate, a limit slot, and a limit plate. Through the cooperation of the limit assembly and the adjustment assembly, the cutter head can be quickly adjusted and fixed. Combined with the use of a retractable protective cover and a motor, the cutting efficiency and quality are improved.
It increases the cutting speed of large-diameter reinforced concrete pipes, reduces manual labor intensity, avoids blade jamming, ensures cutting quality, and reduces project time and operating costs.
Smart Images

Figure CN224544954U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cutting machine technology, specifically to a cutting machine for large-diameter concrete pipes. Background Technology
[0002] With the continuous development of modern technology, large-diameter reinforced concrete pipes are being used more and more widely in the field of water conservancy projects. In particular, large-diameter reinforced concrete pipes can meet the requirements in terms of quality and strength, and the installation speed is relatively fast. During the laying and maintenance of large-diameter reinforced concrete pipes, it is necessary to cut their length to meet the on-site size requirements.
[0003] Currently available pipe cutting machines are relatively small and unsuitable for cutting large-diameter reinforced concrete pipes. They are slow, require high labor intensity for manual cutting, and are prone to blade jamming. After cutting, the pipe ends of the reinforced concrete pipes are often misaligned, resulting in compromised quality. Therefore, it is difficult to meet the cutting quality requirements for large-diameter reinforced concrete pipes, which reduces the cutting speed, delays the project schedule, and increases operating costs. Utility Model Content
[0004] The purpose of this utility model is to provide a cutting machine for large-diameter concrete pipes, which solves the problems in the prior art that it is not suitable for cutting large-diameter reinforced concrete pipes, the cutting speed is slow, the blade is prone to jamming, the pipe ends of the reinforced concrete pipes are seriously misaligned after cutting, and the quality cannot be guaranteed.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A large-diameter concrete pipe cutting machine, comprising:
[0007] A concrete pipe body, wherein a cutter head is installed on one side of the concrete pipe body, and a motor is installed on one side of the cutter head;
[0008] An adjustment assembly is located on one side of the cutter head and is used to adjust the cutter head. The adjustment assembly includes a positioning seat installed on one side of the concrete pipe body and an adjustment limiting plate slidably installed on the outer wall of the positioning seat. A limiting component is provided between the adjustment limiting plate and the positioning seat to limit the sliding movement of the adjustment limiting plate.
[0009] Preferably, the limiting component includes a limiting slot starting on one side of the positioning seat and a limiting plate fixed on one side of the adjusting limiting plate. The limiting plate is located inside the limiting slot, and an adjustment component for adjusting the positioning seat as a whole is provided between the positioning seat and the concrete pipe body.
[0010] Preferably, the adjusting component includes multiple fixing slots formed on the positioning seat and two fixing screws screwed to one side of the positioning seat, with one side of the two fixing screws penetrating the positioning seat and screwed into the interior of the concrete pipe body.
[0011] Preferably, a push plate is installed on one side of the adjusting limit plate, and an mounting plate is installed on one side of the motor. The mounting plate and the end of the push plate near the adjusting limit plate are fixed. A movable component for adjusting the motor is provided between the adjusting limit plate and the push plate.
[0012] Preferably, the moving component includes a fixed screw rotatably mounted on one side of the adjusting limit plate and two limiting rods fixedly mounted on one side of the adjusting limit plate. The push plate is screwed onto the fixed screw. One end of each of the two limiting rods passes through the push plate and the mounting plate. One end of each of the two limiting rods is fitted with a limiting plate. A driving component for moving the positioning seat between the adjusting limit plate and the adjusting limit plate is provided on one side of the adjusting limit plate.
[0013] Preferably, the drive assembly includes a traveling link mounted on one side of the adjusting limit plate and a mounting plate fixed to the bottom of one of the limit rods. The mounting plate has a through hole, and one side of the traveling link passes through the through hole.
[0014] Preferably, the motor is equipped with a retractable protective cover on one side relative to the push plate, and a connecting wire and a connecting water pipe are installed on one side of the mounting plate. The connecting wire is located below the connecting water pipe and is electrically connected to the motor. The main shaft of the motor is connected to the surface of the cutter head.
[0015] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0016] This invention, through the adjustment of components, enables the cutting machine to be adjusted, making it suitable for cutting large-diameter reinforced concrete pipes. This increases the cutting speed of the gas cutting machine for large-diameter reinforced concrete pipes, reduces the labor intensity of manual cutting, and minimizes blade jamming, allowing for continuous cutting and preventing severe misalignment of the pipe ends after cutting, thus improving the cutting quality of large-diameter reinforced concrete pipes, avoiding project delays, and reducing the operating costs of the cutting machine. Attached Figure Description
[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;
[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the adjustment component of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the fixing screw in this utility model.
[0021] The components include: 1. Concrete pipe body; 2. Connecting wires; 3. Connecting water pipes; 4. Retractable protective cover; 5. Cutter head; 6. Fixing screws; 7. Fixing screw rods; 8. Traveling linkage; 9. Positioning seat; 10. Motor; 11. Adjustable limit plate; 12. Limiting slot; 13. Pushing pressure plate; 14. Fixing slot. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please refer to the diagram and... Figure 2 A large-diameter concrete pipe cutting machine includes: a concrete pipe body 1, a cutter head 5 mounted on one side of the concrete pipe body 1, and a motor 10 mounted on one side of the cutter head 5.
[0024] Please refer to Figure 1 - Figure 4 An adjustment component is located on one side of the cutter head 5 and is used to adjust the cutter head 5. The adjustment component includes a positioning seat 9 installed on one side of the concrete pipe body 1 and an adjustment limiting plate 11 slidably installed on the outer wall of the positioning seat 9. A limiting component is provided between the adjustment limiting plate 11 and the positioning seat 9 to limit the sliding of the adjustment limiting plate 11. The limiting component includes a limiting slot 12 starting on one side of the positioning seat 9 and a limiting plate fixed on one side of the adjustment limiting plate 11. The limiting plate is located inside the limiting slot 12. An adjustment component is provided between the positioning seat 9 and the concrete pipe body 1 to adjust the positioning seat 9 as a whole.
[0025] When the height of the motor 10 and the cutter head 5 needs to be adjusted, the traveling linkage 8 is first rotated so that the traveling linkage 8 rotates inside the fixed slot 14. As the traveling linkage 8 rotates, the adjusting limit plate 11 is adjusted appropriately on the positioning seat 9. Moreover, while the adjusting limit plate 11 moves, it can be appropriately limited by the limiting slot 12, so that the movement of the adjusting limit plate 11 is more stable, so as to complete the adjustment of the cutter head 5. Thus, the adjustment of the cutter head 5 is faster, so that the cutter head 5 can cut the concrete pipe body 1.
[0026] Furthermore, such as Figure 1 , Figure 3 and Figure 4 As shown, the adjusting component includes multiple fixing slots 14 formed on the positioning seat 9 and two fixing screws 6 screwed to one side of the positioning seat 9. One side of the two fixing screws 6 passes through the positioning seat 9 and is screwed into the interior of the concrete pipe body 1. Based on this, the positioning seat 9 can be effectively fixed by the two fixing screws 6 so that the positioning seat 9 and the cutter head 5 can be used. Moreover, it is convenient to remove the positioning seat 9 from the concrete pipe body 1 after the cutter head 5 has finished cutting, so that the cutter head 5 can quickly adjust the cutting position.
[0027] Furthermore, such as Figure 1 and Figure 3 As shown, a push plate 13 is installed on one side of the adjusting limit plate 11, and an mounting plate is installed on one side of the motor 10. The mounting plate is fixed to the end of the push plate 13 near the adjusting limit plate 11. A moving component for adjusting the motor 10 is provided between the adjusting limit plate 11 and the push plate 13. Based on this, by rotating the fixing screw 7, the push plate 13 can be effectively adjusted appropriately, so that the cutter head 5 gradually approaches the concrete pipe body 1 until it is in contact with the concrete pipe body 1 and can cut the concrete pipe body 1. Moreover, during the movement of the push plate 13, the two limiting rods limit the movement of the push plate 13, making the push plate 13 move more smoothly and preventing the push plate 13 from rotating with the rotation of the fixing screw 7.
[0028] Furthermore, such as Figures 1-3 As shown, the moving assembly includes a fixed screw 7 rotatably mounted on one side of the adjusting limit plate 11 and two limiting rods fixedly mounted on one side of the adjusting limit plate 11. A push plate 13 is screwed onto the fixed screw 7. One end of each of the two limiting rods passes through the push plate 13 and the mounting plate. A limiting plate is mounted on one end of each of the two limiting rods. A driving assembly for moving the positioning seat 9 between the adjusting limit plate 11 and the adjusting limit plate 11 is provided on one side. The driving assembly includes a traveling link 8 mounted on one side of the adjusting limit plate 11 and a mounting link fixed to the bottom of one of the limiting rods. The mounting link has an opening... A through hole is provided, through which one side of the traveling linkage 8 passes. Based on this, by rotating the traveling linkage 8, the height of the adjusting limit plate 11 can be adjusted appropriately so that the cutter head 5 can be used to cut the concrete pipe body 1 at different positions. Moreover, by rotating the fixing screw 7, the pushing pressure plate 13 also moves with the rotation of the fixing screw 7, so that the cutter head 5 and the motor 10 move. Then, the motor 10 drives the cutter head 5 to rotate to cut the concrete pipe body 1. By adjusting the pushing pressure plate 13 and the adjusting limit plate 11, the cutting depth of the cutter head 5 can be increased, thereby improving the cutting efficiency of the cutter head 5.
[0029] Please also refer to... Figure 4A retractable protective cover 4 is installed on one side of the motor 10 relative to the push plate 13. A connecting wire 2 and a connecting water pipe 3 are installed on one side of the mounting plate. The connecting wire 2 is located below the connecting water pipe 3 and is electrically connected to the motor 10. The main shaft of the motor 10 is connected to the surface of the cutter head 5. Based on this, by connecting a water tank to one side of the connecting water pipe 3, water can be sprayed onto the cutter head 5, so that the surface of the concrete pipe body 1 can be kept moist when the cutter head 5 cuts the concrete pipe body 1, and the cutter head 5 can be cooled down, thereby avoiding dust generation during cutting. At the same time, the cutter head 5 can be cooled down for long-term cutting, thereby improving cutting efficiency.
[0030] Working Principle: First, place the large-diameter concrete pipe horizontally on the ground. Select the cutting position on the large-diameter concrete pipe. Measure the length of the concrete pipe with a tape measure to determine the cutting position and mark it clearly. Repeat the above steps to mark the cutting position several times. 10cm away from the cutting position, drive two fixing screws 6 into the concrete pipe body 1. After driving, unscrew the two fixing screws 6 and place the entire cutting machine on the concrete pipe using the positioning seat 9. Align the fixing slot 14 with the initially drilled screw holes. Finally, tighten the two fixing screws 6. Adjust the fixing screw 7 to its maximum position. According to the position of the cutter head 5, install the retractable protective cover 4. Adjust the limit plate 11 through the travel linkage 8, connect the connecting wire 2 and the connecting water pipe 3, and begin cutting the reinforced concrete pipe. Fix the screw 7, and push the cutter head 5 and motor 10 together towards the cutting surface of the concrete pipe through the pushing pressure plate 13 until the pushing is complete. The telescopic protective cover 4 is continuously adjusted and extended according to the cutting situation of the concrete pipe and the cutter head 5 until the maximum pushing distance of the fixed screw 7 and the cutter head 5 can no longer cut. Unscrew the fixed screw 7, rotate the traveling connecting rod 8, adjust the limit plate 11 to move upward through the limit slot 12, and then fix the screw 7 again. Repeat the above actions until the traveling connecting rod 8 is rotated to the uppermost fixed screw 6. Stop rotating and cutting, disconnect the power, unscrew the fixed screw 7, rotate the traveling connecting rod 8 to the original installation position, unscrew the two fixed screws 6, remove the equipment, rotate the concrete pipe body 1 to the section to be cut, select a new mark position on the concrete pipe body 1, and install a fixed screw 6 on the concrete pipe body 1 10cm away from the cutting position. Use the original uppermost fixed screw 6 as the lowermost fixing point for this cut, and fix the equipment again with the newly installed fixed screw 6. Repeat the above steps to cut until the concrete pipe body 1 is cut.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cutting machine for large-diameter concrete pipes, characterized in that, include: A concrete pipe body (1) is provided with a cutter head (5) on one side and a motor (10) on one side of the cutter head (5). An adjustment assembly is located on one side of the cutter head (5) and is used to adjust the cutter head (5). The adjustment assembly includes a positioning seat (9) installed on one side of the concrete pipe body (1) and an adjustment limiting plate (11) slidably installed on the outer wall of the positioning seat (9). A limiting component for sliding and limiting the adjustment limiting plate (11) is provided between the adjustment limiting plate (11) and the positioning seat (9).
2. The large-diameter concrete pipe cutting machine according to claim 1, characterized in that: The limiting component includes a limiting slot (12) starting on one side of the positioning seat (9) and a limiting plate fixed on one side of the adjusting limiting plate (11). The limiting plate is located inside the limiting slot (12). An adjustment component for adjusting the positioning seat (9) as a whole is provided between the positioning seat (9) and the concrete pipe body (1).
3. A large-diameter concrete pipe cutting machine according to claim 2, characterized in that: The adjustment component includes multiple fixing slots (14) opened on the positioning seat (9) and two fixing screws (6) screwed to one side of the positioning seat (9). One side of the two fixing screws (6) passes through the positioning seat (9) and is screwed into the interior of the concrete pipe body (1).
4. A large-diameter concrete pipe cutting machine according to claim 1, characterized in that: A push plate (13) is installed on one side of the adjustment limit plate (11), and an mounting plate is installed on one side of the motor (10). The mounting plate and the push plate (13) are fixed at one end near the adjustment limit plate (11). A moving component for adjusting the motor (10) is provided between the adjustment limit plate (11) and the push plate (13).
5. A large-diameter concrete pipe cutting machine according to claim 4, characterized in that: The moving component includes a fixed screw (7) rotatably mounted on one side of the adjusting limit plate (11) and two limiting rods fixedly mounted on one side of the adjusting limit plate (11). The push plate (13) is screwed onto the fixed screw (7). One end of each of the two limiting rods passes through the push plate (13) and the mounting plate. One end of each of the two limiting rods is mounted with a limiting plate. A driving component for moving the positioning seat (9) between the adjusting limit plate (11) and the adjusting limit plate (11) is provided on one side of the adjusting limit plate (11).
6. A large-diameter concrete pipe cutting machine according to claim 5, characterized in that: The drive assembly includes a walking link (8) mounted on one side of the adjusting limit plate (11) and a mounting plate fixed to the bottom of one of the limit rods. The mounting plate has a through hole, and one side of the walking link (8) passes through the through hole.
7. A large-diameter concrete pipe cutting machine according to claim 1, characterized in that: The motor (10) is equipped with a retractable protective cover (4) on one side of the push plate (13). A connecting wire (2) and a connecting water pipe (3) are installed on one side of the mounting plate. The connecting wire (2) is located below the connecting water pipe (3). The connecting wire (2) is electrically connected to the motor (10). The main shaft of the motor (10) is connected to the surface of the cutter head (5).