Steel pipe shearing machine for scaffold manufacturing
By designing a scaffolding steel pipe shearing machine including transfer, solid pipe, positioning and telescopic mechanism, the problems of low shearing accuracy and high cost of L-shaped bent pipes in the prior art are solved, and efficient and low-cost precision shearing effect is achieved.
Patent Information
- Application Number
- CN202510652258.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing scaffolding steel pipe shearing machines require manual handheld cutting of both ends of the L-shaped bent pipe, which is not high enough and has poor efficiency. The cost is high when using two disc shearing machines, so it is impossible to fix L-shaped bent pipes of different pipe diameters.
A scaffolding steel pipe shearing machine including a transfer mechanism, a solid pipe mechanism, a positioning mechanism, a telescopic mechanism and a lifting mechanism are designed. Through the cooperation of sliding columns with the L-shaped grooves, the cooperation of the hourglass fixer with the positioning plate, the stable and precise shearing of the L-shaped bent pipe is achieved, and the number of disc shearing machines is reduced.
High-precision shearing of L-shaped bent pipes is achieved, which reduces cost and can adapt to L-shaped bent pipes of different pipe diameters, improving shear efficiency and accuracy.
Smart Images
Figure CN120326049A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of steel pipe shearing machines, and particularly to a steel pipe shearing machine for making scaffolding. Background Art
[0002] A scaffolding is a temporary support structure erected at a construction site for workers to operate and solve vertical and horizontal transportation problems. It provides a stable standing space for construction workers at high altitudes (such as wall masonry, exterior facade decoration, etc.), solves the basic support problem for high-altitude operations, and ensures safe and efficient construction operations. It bears construction materials such as concrete formwork and steel bars, and ensures their stable fixation at predetermined positions; at the same time, the scaffolding itself has a load-bearing capacity and can bear the weight of workers, materials, and small machinery. By setting up components such as guardrails and toe boards, it prevents personnel from falling and materials from dropping, conforms to construction safety codes, and reduces the risk of high-altitude operations. It can be used to set up temporary work sheds, warehouses and other auxiliary facilities to facilitate construction activities; it forms a connecting passage between different elevations of the building to ensure the transportation routes of personnel and materials. Some scaffolding is composed of straight pipes and L-shaped bent pipes.
[0003] A disk shearing machine is a commonly used tool for shearing materials with a high-speed rotating disk-shaped blade, which has the characteristics of convenient operation and high efficiency, and is suitable for shearing various materials such as metals, woods, and stones.
[0004] Existing steel pipe shearing machines for scaffolding need to manually hold and shear the two ends of the L-shaped bent pipe, with insufficient accuracy and poor efficiency. Some steel pipe shearing machines for scaffolding use two disk shearing machines to shear the two ends of the L-shaped bent pipe. Although the shearing accuracy is improved, the two disk shearing machines increase the construction cost and cannot fix L-shaped bent pipes with different pipe diameters.
[0005] Therefore, a steel pipe shearing machine for making scaffolding is designed to solve the above problems. Summary of the Invention
[0006] The purpose of the present invention is to solve the disadvantages existing in the background art, and to provide a steel pipe shearing machine for making scaffolding.
[0007] To achieve the above object, the technical solution adopted by the present invention is: a steel pipe shearing machine for making scaffolding, including a shearing bed base, the shearing bed base is installed with a fixed plate through a transfer mechanism, the fixed plate is installed with three hourglass fixators through a pipe fixing mechanism, the fixed plate is installed with a positioning lead screw through a positioning mechanism, the shearing bed base is installed with a telescopic inner plate through a telescopic mechanism, and the telescopic inner plate is installed with a height-increasing moving plate through a lifting and rotating mechanism; The transfer mechanism includes a bottom plate fixedly installed on the upper surface of the shearing machine base. An L-shaped groove is formed on the upper surface of the bottom plate. Two sliding columns are movably installed in the L-shaped groove. The height-increasing moving plate is fixedly installed on the upper surfaces of the two sliding columns. The fixing plate is fixedly installed on the upper surface of the height-increasing moving plate. Move the L-shaped bent pipe to shear its two ends.
[0008] Preferably, the hourglass fixator includes an hourglass upper part, an hourglass threaded hole, a stud, and an hourglass lower part. A stud is fixedly installed on the upper surface of the hourglass lower part. An hourglass threaded hole is formed inside the hourglass upper part. The stud is movably installed on the inner surface of the hourglass threaded hole. And the stud is in threaded cooperation with the hourglass threaded hole.
[0009] Preferably, the pipe fixing mechanism includes an extrusion groove formed on the upper surface of the fixing plate. And the extrusion groove is formed at the rear side of the height-increasing moving plate. Two hourglass fixators are fixedly installed on the upper surface of the fixing plate. An hourglass sliding member is movably installed on the inner surface of the extrusion groove. An hourglass fixator is fixedly installed on the upper surface of the hourglass sliding member and the hourglass fixator is movably installed on the upper surface of the fixing plate. An hourglass blocking member is fixedly installed on the lower surface of the hourglass sliding member. And the hourglass blocking member is movably installed on the lower surface of the fixing plate. A pushing threaded hole is formed outside the extrusion groove. A pushing lead screw is movably installed on the inner surface of the pushing threaded hole. And the pushing threaded hole is in threaded cooperation with the pushing lead screw. And the pushing lead screw is movably installed outside the hourglass sliding member.
[0010] Preferably, the positioning mechanism includes a hollow L-shaped plate fixedly installed on the upper surface of the fixing plate. And the hollow L-shaped plate is installed outside the rear hourglass fixator. A moving groove is formed above the hollow L-shaped plate. A fixed L-shaped plate is movably installed on the inner surface of the moving groove. A positioning plate is fixedly installed on the upper surface of the fixed L-shaped plate. A fixing groove is formed outside the hollow L-shaped plate. And the fixed L-shaped plate is movably installed in the fixing groove. A fixing threaded hole is formed outside the fixed L-shaped plate. A positioning lead screw is movably installed in the fixing threaded hole. And the fixing threaded hole is in threaded cooperation with the positioning lead screw. And the positioning lead screw is movably installed in the fixing groove.
[0011] Preferably, the telescopic mechanism includes a connecting plate fixedly installed on the inner surface of the shearing machine base. And the connecting plate is fixedly installed on the lower surface of the bottom plate. A telescopic cylinder is fixedly installed on the front surface of the connecting plate. A guide cylinder is fixedly installed on the front surface of the connecting plate. A guide rod is movably installed in the guide cylinder. And the telescopic inner plate is fixedly installed on the front surfaces of the guide rod and the telescopic cylinder.
[0012] Preferably, the lifting and rotating mechanism includes a connecting column fixedly installed on the lower surface of the heightening and moving plate, and the connecting column is installed between two sliding columns and is movably installed in an L-shaped groove. A rotating plate is movably sleeved on the outer surface of the connecting column, and the front surface of the rotating plate is fixedly installed on the telescopic outer plate, and the telescopic outer plate is movably sleeved on the outer surface of the telescopic inner plate.
[0013] Preferably, a fixing ring is fixedly installed on the outer surface of the connecting column, and the rotating plate is movably installed on the upper surface of the fixing ring.
[0014] Preferably, a disk shearing machine is fixedly installed on the upper surface of the bottom plate, and a shearing opening is formed on the upper surface of the bottom plate, and the shearing opening is formed below the disk shearing machine.
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can cooperate two sliding columns with the L-shaped groove. After shearing one end of the L-shaped bend pipe, move the fixed plate to shear the other end of the L-shaped bend pipe, reducing the number of disk shearing machines and lowering the manufacturing cost.
[0016] 2. By the hourglass fixator to increase the contact area with the L-shaped bend pipe, the L-shaped bend pipe can be stably fixed. The upper part of the hourglass can be adjusted with the stud through the hourglass threaded hole to cooperate with L-shaped bend pipes of different pipe diameters for fixation.
[0017] 3. Through the cooperation of the positioning plate and the hourglass fixator, precise shearing is achieved, and by adjusting the positioning plate, L-shaped bend pipes of different pipe diameters can be fixed.
[0018] 4. The heightening and moving plate is driven to move by the telescopic cylinder, and interference is avoided through the connecting column and the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is the overall structural schematic diagram of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 2 is the structural schematic diagram of three hourglass fixators of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 3 is the structural schematic diagram of the pipe fixing mechanism of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 4 is the internal structural schematic diagram of the hourglass fixator of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 5 is the structural schematic diagram of the positioning mechanism of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 6 is the structural schematic diagram of the transfer mechanism of a steel pipe shearing machine for making scaffolding according to the present invention; Figure 7 Schematic structural diagram of the telescopic mechanism of a steel pipe shearing machine for scaffolding manufacturing according to the present invention; Figure 8 During the use of a steel pipe shearing machine for scaffolding manufacturing according to the present invention Figure 1 Schematic structural diagram; Figure 9 During the use of a steel pipe shearing machine for scaffolding manufacturing according to the present invention Figure 2 Schematic structural diagram; In the figure: 1, shearing machine base; 2, bottom plate; 3, heightening moving plate; 4, fixing plate; 5, disc shearing machine; 6, shearing opening; 7, hourglass fixer; 8, extrusion groove; 9, hourglass slider; 10, hourglass barrier; 11, pushing threaded hole; 12, pushing lead screw; 13, upper part of the hourglass; 14, hourglass threaded hole; 15, stud; 16, lower part of the hourglass; 17, hollow L-shaped plate; 18, moving groove; 19, fixing groove; 20, fixed L-shaped plate; 21, positioning plate; 22, fixing threaded hole; 23, positioning lead screw; 24, L-shaped groove; 25, connecting plate; 26, telescopic cylinder; 27, guide cylinder; 28, guide rod; 29, telescopic inner plate; 30, telescopic outer plate; 31, sliding column; 32, connecting column; 33, rotating plate; 34, fixing ring; 35, L-shaped bent pipe. Specific embodiments
[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.
[0021] As Figures 1-9 shown, a steel pipe shearing machine for scaffolding manufacturing includes a shearing machine base 1. The shearing machine base 1 is installed with a fixing plate 4 through a transfer mechanism. The fixing plate 4 is installed with three hourglass fixers 7 through a pipe fixing mechanism. The fixing plate 4 is installed with a positioning lead screw 23 through a positioning mechanism. The shearing machine base 1 is installed with a telescopic inner plate 29 through a telescopic mechanism. The telescopic inner plate 29 is installed with a heightening moving plate 3 through a lifting and rotating mechanism; The transfer mechanism includes a bottom plate 2 fixedly installed on the upper surface of the shearing machine base 1. The upper surface of the bottom plate 2 is provided with an L-shaped groove 24. Two sliding columns 31 are movably installed in the L-shaped groove 24. The heightening moving plate 3 is fixedly installed on the upper surfaces of the two sliding columns 31. The fixing plate 4 is fixedly installed on the upper surface of the heightening moving plate 3. Place the L-shaped bent pipe 35 on the fixing plate 4 and shear the long end of the L-shaped bent pipe 35. The two sliding columns 31 slide from the long end of the L-shaped groove 24 to the short end, and the short end of the L-shaped bent pipe 35 will be placed at the lower end of the disc shearing machine 5 to shear the long end of the L-shaped bent pipe 35, thereby realizing the movement of the L-shaped bent pipe 35 to shear its two ends.
[0022] The hourglass fixator 7 includes an upper hourglass part 13, an hourglass threaded hole 14, a stud 15, and a lower hourglass part 16. The stud 15 is fixedly installed on the upper surface of the lower hourglass part 16. The hourglass threaded hole 14 is opened inside the upper hourglass part 13. The stud 15 is movably installed on the inner surface of the hourglass threaded hole 14, and the stud 15 is in threaded cooperation with the hourglass threaded hole 14. There will be two contact points between one hourglass fixator 7 and the L-shaped elbow 35, which has a larger contact area compared with an ordinary fixing column. And because the side surface of the hourglass fixator 7 is V-shaped, it can firmly fix the L-shaped elbow 35, preventing the L-shaped elbow 35 from being extruded during the shrinkage and fixation process. Moreover, the upper hourglass part 13 can be adjusted through the hourglass threaded hole 14 and the stud 15 to cooperate with L-shaped elbows 35 of different pipe diameters. When the pipe diameter of the L-shaped elbow 35 is larger, the upper hourglass part 13 can be rotated upward to maintain a larger contact area. When the pipe diameter of the L-shaped elbow 35 is smaller, the upper hourglass part 13 can be rotated downward to prevent the L-shaped elbow 35 from moving upward during the shrinkage and fixation process, causing shear error.
[0023] The pipe fixing mechanism includes an extrusion groove 8 opened on the upper surface of the fixing plate 4, and the extrusion groove 8 is opened at the rear side of the heightening and moving plate 3. Two hourglass fixators 7 are fixedly installed on the upper surface of the fixing plate 4. The hourglass sliding part 9 is movably installed on the inner surface of the extrusion groove 8. An hourglass fixator 7 is fixedly installed on the upper surface of the hourglass sliding part 9, and the hourglass fixator 7 is movably installed on the upper surface of the fixing plate 4. The hourglass blocking part 10 is fixedly installed on the lower surface of the hourglass sliding part 9, and the hourglass blocking part 10 is movably installed on the lower surface of the fixing plate 4. A pushing threaded hole 11 is opened outside the extrusion groove 8. The pushing screw rod 12 is movably installed on the inner surface of the pushing threaded hole 11, and the pushing threaded hole 11 is in threaded cooperation with the pushing screw rod 12. The pushing screw rod 12 is movably installed outside the hourglass sliding part 9. Place the L-shaped elbow 35 against the hourglass fixators 7 on the left and lower sides, and turn the pushing screw rod 12 inward to make the hourglass fixator 7 on the hourglass sliding part 9 move towards the L-shaped elbow 35 to fix the L-shaped elbow 35 together with the other two hourglass fixators 7. The movement range of the hourglass fixator 7 on the hourglass sliding part 9 is restricted by the extrusion groove 8 and the hourglass blocking part 10.
[0024] The positioning mechanism includes a hollow L-shaped plate 17 fixedly installed on the upper surface of the fixed plate 4, and the hollow L-shaped plate 17 is installed outside the rear hourglass fixator 7. A moving groove 18 is formed above the hollow L-shaped plate 17. A fixed L-shaped plate 20 is movably installed on the inner surface of the moving groove 18. A positioning plate 21 is fixedly installed on the upper surface of the fixed L-shaped plate 20. A fixed groove 19 is formed outside the hollow L-shaped plate 17, and the fixed L-shaped plate 20 is movably installed in the fixed groove 19. A fixed threaded hole 22 is formed outside the fixed L-shaped plate 20. A positioning screw rod 23 is movably installed in the fixed threaded hole 22, and the fixed threaded hole 22 is in threaded cooperation with the positioning screw rod 23. The positioning screw rod 23 is movably installed in the fixed groove 19. Since the L-shaped bent pipe 35 is fixed by three hourglass fixators 7, the hourglass fixator 7 fixes the bent part of the L-shaped bent pipe 35, and the position of the moving hourglass fixator 7 is not fixed. Therefore, for L-shaped bent pipes 35 of the same pipe diameter, the positions after being fixed by the hourglass fixator 7 will also be different. In order to achieve precise shearing, when using it for the first time, first place the L-shaped bent pipe 35 against the left and lower hourglass fixators 7. After adjusting the position of the L-shaped bent pipe 35, move the positioning plate 21 forward so that the positioning plate 21 closely adheres to the outside of the L-shaped bent pipe 35. Then, fix the positioning plate 21 through the fixed L-shaped plate 20, the fixed threaded hole 22, and the positioning screw rod 23, so that the positions of L-shaped bent pipes 35 of the same pipe diameter are consistent during fixation, thereby achieving precise shearing.
[0025] The telescopic mechanism includes a connecting plate 25 fixedly installed on the inner surface of the shearing machine base 1, and the connecting plate 25 is fixedly installed on the lower surface of the bottom plate 2. A telescopic cylinder 26 is fixedly installed on the front surface of the connecting plate 25. A guide cylinder 27 is fixedly installed on the front surface of the connecting plate 25. A guide rod 28 is movably installed in the guide cylinder 27. The telescopic inner plate 29 is fixedly installed on the connecting plate 25 between the guide rod 28 and the front surface of the telescopic cylinder 26 and is fixedly connected to the shearing machine base 1 and the bottom plate 2, which will be more reliable. The height-increasing moving plate 3 moves through the telescopic inner plate 29 connected by the telescopic cylinder 26, and the movement range of the telescopic inner plate 29 is restricted by the cooperation of the guide rod 28 and the guide cylinder 27.
[0026] The lifting and rotating mechanism includes a connecting column 32 fixedly installed on the lower surface of the height-increasing moving plate 3, and the connecting column 32 is installed between two sliding columns 31 and is movably installed in the L-shaped groove 24. A rotating plate 33 is movably sleeved on the outer surface of the connecting column 32. The front surface of the rotating plate 33 is fixedly installed on the telescopic outer plate 30, and the telescopic outer plate 30 is movably sleeved on the outer surface of the telescopic inner plate 29. When the telescopic cylinder 26 extends, it drives the telescopic inner plate 29 to move. Due to the angle problem, the telescopic inner plate 29 will move out of the telescopic outer plate 30. When the sliding column 31 moves to the corner of the L-shaped groove 24, the rotating plate 33 installed on the telescopic outer plate 30 will rotate along the outer surface of the connecting column 32 to avoid interference.
[0027] A fixing ring 34 is fixedly installed on the outer surface of the connecting column 32, and the rotating plate 33 is movably installed on the upper surface of the fixing ring 34. The fixing ring 34 prevents the rotating plate 33 sleeved outside the connecting column 32 from sliding out of the outer surface of the connecting column 32 under the influence of gravity.
[0028] A disc shearing machine 5 is fixedly installed on the upper surface of the bottom plate 2. A shearing opening 6 is formed on the upper surface of the bottom plate 2, and the shearing opening 6 is formed below the disc shearing machine 5. The disc shearing machine 5 and the shearing opening 6 are an existing technology and will not be elaborated here.
[0029] During use, the L-shaped bent pipe 35 is placed against the hourglass fixators 7 on the left and lower sides. After adjusting the position of the L-shaped bent pipe 35, the positioning plate 21 is moved forward to make the positioning plate 21 closely adhere to the outer side of the L-shaped bent pipe 35. The pushing screw rod 12 is screwed inward to move the hourglass fixator 7 on the hourglass sliding member 9 towards the L-shaped bent pipe 35, and together with the other two hourglass fixators 7, the L-shaped bent pipe 35 is fixed. The movement range of the hourglass fixator 7 on the hourglass sliding member 9 is restricted by the extrusion groove 8 and the hourglass barrier member 10, so that the positions of the L-shaped bent pipes 35 with the same pipe diameter are consistent when fixed, thus achieving precise shearing. An hourglass fixator 7 and the L-shaped bent pipe 35 will have two contact points, with a larger contact area compared to ordinary fixing columns. And because the side surface of the hourglass fixator 7 is V-shaped, it can firmly fix the L-shaped bent pipe 35, preventing the L-shaped bent pipe 35 from being extruded during the process of shrinking and fixing. Moreover, the upper hourglass part 13 can be adjusted through the hourglass threaded hole 14 and the stud 15 to cooperate with L-shaped bent pipes 35 of different pipe diameters. When the pipe diameter of the L-shaped bent pipe 35 is larger, the upper hourglass part 13 can be rotated upward to maintain a larger contact area. When the pipe diameter of the L-shaped bent pipe 35 is smaller, the upper hourglass part 13 can be rotated downward to prevent the L-shaped bent pipe 35 from moving upward during the process of shrinking and fixing, causing shearing errors. The long end of the L-shaped bent pipe 35 is sheared. The telescopic cylinder 26 extends to drive the telescopic inner plate 29 to move. And due to the angle problem, the telescopic inner plate 29 will move out of the telescopic outer plate 30. When the sliding column 31 moves to the corner of the L-shaped groove 24, the rotating plate 33 installed on the telescopic outer plate 30 will rotate along the outer surface of the connecting column 32 to avoid interference. The fixing ring 34 prevents the rotating plate 33 sleeved outside the connecting column 32 from sliding out of the outer surface of the connecting column 32 under the influence of gravity. The two sliding columns 31 slide from the long end of the L-shaped groove 24 to the short end, and the short end of the L-shaped bent pipe 35 will be placed at the lower end of the disc shearing machine 5 to shear the long end of the L-shaped bent pipe 35, thus realizing the movement of the L-shaped bent pipe 35 to shear its two ends.
[0030] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit scope of the present invention, there will be various changes and improvements to the present invention, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.
Claims
1. A steel pipe shearing machine for scaffolding production, comprising a shearing bed base (1), characterized in that: The shearing bed base (1) is installed with a fixed plate (4) through a transfer mechanism. The fixed plate (4) is installed with three hourglass fixators (7) through a pipe fixing mechanism. The fixed plate (4) is installed with a positioning lead screw (23) through a positioning mechanism. The shearing bed base (1) is installed with a telescopic inner plate (29) through a telescopic mechanism. The telescopic inner plate (29) is installed with a heightening moving plate (3) through a lifting and rotating mechanism; The transfer mechanism includes a bottom plate (2) fixedly installed on the upper surface of the shearing bed base (1). An L-shaped groove (24) is formed on the upper surface of the bottom plate (2). Two sliding columns (31) are movably installed in the L-shaped groove (24). The heightening moving plate (3) is fixedly installed on the upper surfaces of the two sliding columns (31). The fixed plate (4) is fixedly installed on the upper surface of the heightening moving plate (3). Move the L-shaped bent pipe (35) to cut its two ends.
2. A steel pipe cutting machine for scaffolding production according to claim 1, characterized in that: The hourglass fixator (7) includes an hourglass upper part (13), an hourglass threaded hole (14), a stud (15), and an hourglass lower part (16). A stud (15) is fixedly installed on the upper surface of the hourglass lower part (16). An hourglass threaded hole (14) is formed inside the hourglass upper part (13). The stud (15) is movably installed on the inner surface of the hourglass threaded hole (14). The stud (15) is in threaded fit with the hourglass threaded hole (14).
3. A steel pipe shearing machine for making scaffolds according to claim 1, characterized in that: The pipe fixing mechanism includes an extrusion groove (8) formed on the upper surface of the fixed plate (4). The extrusion groove (8) is formed at the rear side of the heightening moving plate (3). Two hourglass fixators (7) are fixedly installed on the upper surface of the fixed plate (4). An hourglass sliding member (9) is movably installed on the inner surface of the extrusion groove (8). An hourglass fixator (7) is fixedly installed on the upper surface of the hourglass sliding member (9). The hourglass fixator (7) is movably installed on the upper surface of the fixed plate (4). An hourglass blocking member (10) is fixedly installed on the lower surface of the hourglass sliding member (9). The hourglass blocking member (10) is movably installed on the lower surface of the fixed plate (4). A pushing threaded hole (11) is formed outside the extrusion groove (8). A pushing lead screw (12) is movably installed on the inner surface of the pushing threaded hole (11). The pushing threaded hole (11) is in threaded fit with the pushing lead screw (12). The pushing lead screw (12) is movably installed outside the hourglass sliding member (9).
4. A steel pipe shearing machine for making scaffolds according to claim 1, characterized in that: The positioning mechanism includes a hollow L-shaped plate (17) fixedly installed on the upper surface of the fixed plate (4), and the hollow L-shaped plate (17) is installed outside the rear hourglass fixator (7). A moving groove (18) is formed above the hollow L-shaped plate (17). A fixed L-shaped plate (20) is movably installed on the inner surface of the moving groove (18). A positioning plate (21) is fixedly installed on the upper surface of the fixed L-shaped plate (20). A fixing groove (19) is formed outside the hollow L-shaped plate (17), and the fixed L-shaped plate (20) is movably installed in the fixing groove (19). A fixing threaded hole (22) is formed outside the fixed L-shaped plate (20), and a positioning screw rod (23) is movably installed in the fixing threaded hole (22). The fixing threaded hole (22) is in threaded cooperation with the positioning screw rod (23), and the positioning screw rod (23) is movably installed in the fixing groove (19).
5. A steel pipe cutting machine for scaffolding production according to claim 1, characterized in that: The telescoping mechanism includes a connecting plate (25) fixedly installed on the inner surface of the shearing machine base (1), and the connecting plate (25) is fixedly installed on the lower surface of the bottom plate (2). A telescoping cylinder (26) is fixedly installed on the front surface of the connecting plate (25). A guide cylinder (27) is fixedly installed on the front surface of the connecting plate (25). A guide rod (28) is movably installed in the guide cylinder (27), and a telescoping inner plate (29) is fixedly installed on the front surfaces of the guide rod (28) and the telescoping cylinder (26).
6. A steel pipe shearing machine for scaffolding manufacturing according to claim 1, characterized in that: The lifting and rotating mechanism includes a connecting column (32) fixedly installed on the lower surface of the heightening moving plate (3), and the connecting column (32) is installed between two sliding columns (31). The connecting column (32) is movably installed in an L-shaped groove (24). A rotating plate (33) is movably sleeved on the outer surface of the connecting column (32). The front surface of the rotating plate (33) is fixedly installed on a telescoping outer plate (30), and the telescoping outer plate (30) is movably sleeved on the outer surface of the telescoping inner plate (29).
7. A steel pipe cutting machine for making scaffolds according to claim 6, characterized in that: A fixing ring (34) is fixedly installed on the outer surface of the connecting column (32), and the rotating plate (33) is movably installed on the upper surface of the fixing ring (34).
8. A steel pipe shearing machine for scaffolding manufacturing according to claim 1, characterized in that: A disk shearing machine (5) is fixedly installed on the upper surface of the bottom plate (2). A shearing notch (6) is formed on the upper surface of the bottom plate (2), and the shearing notch (6) is formed below the disk shearing machine (5).