A pipe cutting tool

Abstract

The utility model belongs to pipeline cutting technical field especially relates to a pipeline cutting tool. A pipeline cutting tool, including support mechanism, clamping adjusting mechanism, cutting machine, support mechanism is used to support and rotate to pipeline, clamping adjusting mechanism includes support frame, two groups of gyro wheel rotatable setting in the lower part of support frame, rotatable vertical wear and tear screw rod on the upper portion of support frame, the adjusting plate of screw thread set on screw rod, relative hinge in the two sides of adjusting plate's clamping arm, rotatable connection's roll axle in clamping arm lower part, both ends hinge on support frame and clamping arm's hinge plate, the casing of cutting machine rotatable connection is in support frame, rotates screw rod and drives adjusting plate to move up and down and then drives two clamping arms to move towards and move away from, when pipeline is supported by support mechanism and to pipeline cutting, gyro wheel and roll axle abutment pipeline outer circumference. The utility model is portable, simple structure, can cut to different pipe diameter pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of pipe cutting technology, and in particular relates to a pipe cutting tool. Background Technology

[0002] In the petrochemical industry, pipeline cutting is the first step in the installation and maintenance of process pipelines, and its processing quality and efficiency are of paramount importance.

[0003] Currently, on-site pipe cutting operations mainly rely on two methods: First, operators use handheld flame cutters or abrasive wheel cutters. This method heavily depends on worker experience and has inherent drawbacks such as poor cutting accuracy, inconsistent cut quality, high labor intensity, and high safety risks. Second, existing semi-automatic or fully automatic mechanical cutting equipment is used, such as the Chinese invention patent application with application number 201911388138.2, entitled "A Cutting Device Capable of Clamping Pipes of Different Lengths"; the Chinese invention patent application with application number 201811403166.2, entitled "A PVC Pipe Cutting Device with Clamping Function"; and the Chinese authorized invention patent with application number 202411148834.7, entitled "A Water Conservancy Pipe Cutting Device." While these devices improve cutting accuracy to some extent, they have significant drawbacks: they are typically complex in structure, bulky, heavy, and extremely poorly portable, making it difficult to quickly respond to the flexible operational needs of different locations and pipe diameters. Utility Model Content

[0004] To address the technical problems existing in the prior art, this application provides a portable, simple-structured pipe cutting tool that can cut pipes of different diameters.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A pipe cutting tool includes a support mechanism, a clamping and adjusting mechanism, and a cutting machine. The support mechanism supports the pipe and allows the pipe to rotate on the support. The clamping and adjusting mechanism includes a support frame, two sets of rollers rotatably and oppositely arranged at the lower part of the support frame, a screw rotatably and vertically inserted into the upper part of the support frame, an adjusting plate threaded onto the screw, clamping arms hinged to both sides of the adjusting plate, a roller shaft rotatably connected to the lower part of the clamping arms, and a hinge plate with its two ends respectively hinged to the support frame and the clamping arms. The housing of the cutting machine is rotatably connected to the support frame. Rotating the screw drives the adjusting plate to move up and down, thereby driving the two clamping arms to move towards and away from each other. When the pipe is supported by the support mechanism and when the pipe is being cut, the rollers and roller shaft abut against the outer circumference of the pipe.

[0006] Preferably, the support frame includes a horizontally arranged base plate, a vertically fixed plate connected to the base plate, and a top plate horizontally fixed to the upper end of the vertical plate. The screw is rotatably inserted into the top plate and threadedly connected to the adjusting plate.

[0007] Preferably, the lower part of the screw is rotatably embedded in the base plate.

[0008] Preferably, a fixed shaft is fixedly embedded on both sides of the base plate along the length of the roller shaft, and rollers are rotatably sleeved at both ends of the fixed shaft.

[0009] Preferably, a bottom plate clearance groove is provided on the bottom plate at the middle of the fixed shaft, one end of the hinge plate is rotatably sleeved on the fixed shaft in the bottom plate clearance groove, and the other end is rotatably connected to the clamping arm through a lower pin.

[0010] Preferably, an upper pin is fixedly inserted in the top plate along the length of the roller shaft, and a top plate clearance groove is formed on the top plate at the middle of the upper pin. The upper part of the clamping arm is rotatably connected to the upper pin in the top plate clearance groove.

[0011] Preferably, the housing of the cutting machine is rotatably connected to the vertical plate via a rotating shaft, and an arc-shaped guide groove is formed on the circumference with the axis of the rotating shaft as the center. The guide groove is formed on the vertical plate, and a guide block is fixedly connected to the housing of the cutting machine. The guide block can slide back and forth in the guide groove.

[0012] Preferably, a limiting block is detachably and fixedly connected within the guide groove.

[0013] Preferably, the support mechanism includes a base and a support frame. Multiple sets of base grooves are formed on the base along its length. The support frame includes two sets of X-shaped support plates arranged opposite to each other. Each set of support plates can rotate relative to each other. A lower support shaft is fixedly connected to the lower end of the two sets of support plates, and an upper support shaft is fixedly connected to the upper end of the two sets of support plates. A nylon roller is rotatably sleeved on the upper support shaft. The two lower support shafts can be respectively embedded in the base grooves.

[0014] Preferably, a limiting groove is formed on the groove wall of the base groove corresponding to the two lower support shafts respectively, and the two lower support shafts can be embedded in the corresponding limiting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This utility model achieves pipe support adaptation within a pipe diameter range of 100mm-350mm by setting an adjustable structure with an X-shaped support frame, solving the pain point that traditional fixed supports cannot be compatible with pipes of multiple diameters; at the same time, combined with the rolling design of nylon rollers, it significantly improves the position adjustment efficiency during pipe installation while ensuring support stability, and has the technical advantages of simple structure, convenient operation and strong adaptability.

[0016] The clamping and adjusting mechanism of this invention adopts an arched, encircling design, which can tightly fit pipes of different diameters and achieve stable clamping. This design changes the situation of traditional cutting equipment having complex structures and poor adaptability to pipe diameters. It can adapt to pipes with diameters of 100-350mm commonly used in the petrochemical industry. In actual operation, there is no need to replace complex fixing devices for different pipe diameters, saving installation and adjustment time. At the same time, this bracket can accommodate various specifications of electric cutting machines, fixing the cutting machine on the clamping and adjusting mechanism, making the electric cutting machine the cutting power source, eliminating the need to purchase additional dedicated cutting power equipment, reducing equipment costs, and improving the versatility and flexibility of the tool.

[0017] Unlike traditional semi-automatic or fully automatic mechanical cutting equipment, which is complex in structure, bulky, and heavy, this pipe cutting tool has a relatively simple structure and can be flexibly assembled during use. In petrochemical sites, where work locations and pipe diameters are complex and varied, this tool can quickly respond to different operational needs. Whether in confined spaces or when frequent changes in work locations are required, it can be easily transported, installed, and used, exhibiting excellent portability and environmental adaptability.

[0018] The pipe cutting tool of this invention achieves convenient movement and stable support of the pipe through a support mechanism, greatly reducing the labor intensity of adjusting the pipe position. The arched, embracing design of the clamping and adjusting mechanism, as well as its compatibility with existing handheld electric cutting machines, improves the equipment's versatility and portability, reduces costs, and ensures cutting accuracy and efficiency. It can meet the needs of on-site pipe cutting operations in the petrochemical industry for high precision, automation, portability, and environmental adaptability, effectively overcoming the shortcomings of existing technologies and equipment, and achieving safe, efficient, and high-quality pipe cutting operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the clamping and adjusting mechanism and the connection structure of the cutting machine of this utility model.

[0021] Figure 3 This is a schematic diagram of the clamping and adjusting mechanism of this utility model from one perspective.

[0022] Figure 4 This is a schematic diagram of the clamping and adjusting mechanism of this utility model from a second perspective.

[0023] Figure 5 This is a schematic diagram of the support mechanism of this utility model.

[0024] In the diagram: 1. Pipeline 2. Support mechanism; 21. Base; 211. Base groove; 212. Limiting groove; 22. Support plate; 23. Lower support shaft; 24. Upper support shaft; 25. Rotary bearing; 26. Nylon roller; 27. Anti-slip nylon pad. 3. Clamping and Adjustment Structure; 31. Support Frame; 311. Base Plate; 312. Vertical Plate; 313. Top Plate; 314. Top Plate Clearance Groove; 315. Fixed Shaft; 316. Base Plate Clearance Groove; 317. Guide Groove; 318. Limiting Block; 32. Roller; 33. Screw; 331. Rotating Handle; 34. Adjusting Plate; 341. Threaded Sleeve; 342. Upper Pin; 35. Clamping Arm; 351. Rotating Bracket; 36. Roller; 37. Hinge Plate; 371. Lower Pin. 4. Cutting machine; 41. Housing; 42. Cutting machine body; 421. Grip; 422. Cutting blade; 43. Connecting plate; 431. Connecting plate through hole; 432. Limiting through hole; 44. Rotating shaft; 45. Guide block; 46. Limiting pin. Detailed Implementation

[0025] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0027] See appendix Figure 1As shown, a pipe cutting tool includes a support mechanism 2 for supporting a pipe 1 and allowing the pipe 1 to rotate thereon, a clamping and adjusting mechanism 3 for clamping the pipe 1 and adjustable according to different outer diameter pipe 1 sizes, and a cutting machine 4 rotatably fixed to the clamping and adjusting mechanism 3 for cutting the pipe 1.

[0028] See Figure 5 As shown, the support mechanism 2 includes a base 21 and a support frame. The base 21 is a cuboid structure. Multiple sets of base grooves 211 are provided on the base 21 along its length direction. Each set of base grooves 211 is arranged along the width direction of the base 21. The multiple sets of base grooves 211 are arranged in parallel. In this embodiment, there are six sets of base grooves 211.

[0029] The support frame includes two sets of X-shaped support plates 22 arranged opposite to each other. The middle of each set of support plates 22 is rotatable relative to each other via an existing pin structure. A lower support shaft 23 is fixedly connected to the lower end of each set of support plates 22, meaning both ends of the lower support shaft 23 are fixedly connected to the two corresponding support plates 22. An upper support shaft 24 is fixedly connected to the upper end of each set of support plates 22, meaning both ends of the upper support shaft 24 are respectively fixedly connected to the two corresponding support plates 22. A nylon roller 26 is rotatably mounted on each upper support shaft 24 via an existing rotating bearing 25. The nylon roller 26 is made of nylon to avoid scratching PVC or PE pipes.

[0030] Two lower support shafts 23 can be respectively embedded in the base grooves 211. By embedding the two lower support shafts 23 in different base grooves 211, the angle between the two support plates 22 in each group can be adjusted, thereby adjusting the support height of the pipe 1. When the support mechanism 2 supports the pipe 1, the pipe 1 is placed on the nylon rollers 26 on the two upper support shafts 24 along the length of the nylon rollers 26. The nylon rollers 26 support the pipe 1. When the pipe 1 is rotated, the pipe 1 can drive the nylon rollers 26 to rotate, so that the pipe 1 can be manually driven to rotate when cutting the pipe 1.

[0031] To improve the stability of the support mechanism 2 when supporting the pipe 1 and to prevent the lower support shaft 24 from detaching from the base groove 211, in this embodiment, limiting grooves 212 are formed on the groove walls of the base grooves 211 corresponding to the two lower support shafts 23, respectively. The two lower support shafts 23 can be embedded in the corresponding limiting grooves 212. Specifically, since six sets of base grooves 211 are provided, such as Figure 5 As shown, the limiting grooves 212 of the three base grooves 211 on the left side are arranged opposite to the limiting grooves 212 of the three base grooves 211 on the right side. When the two sets of support plates 22 support the pipe 1, the two lower support shafts 23 are respectively embedded in the corresponding limiting grooves 212 due to the gravity of the pipe 1.

[0032] In addition, a non-slip nylon pad 27 is bonded to the lower end of the base 21 to enhance the stability of the support mechanism 2 on the working surface.

[0033] See Figure 3 , 4 As shown, the clamping and adjusting mechanism 3 includes a support frame 31, two sets of rollers 32 rotatably and oppositely arranged at the lower part of the support frame 31, a screw 33 rotatably and vertically passing through the upper part of the support frame 31, an adjusting plate 34 threaded onto the screw 33, clamping arms 35 hinged to both sides of the adjusting plate 34, a roller shaft 36 rotatably connected to the lower part of the clamping arms 35, and a hinge plate 37 with both ends respectively hinged to the support frame 31 and the clamping arms 35; the housing 41 of the cutting machine 4 is rotatably connected to the support frame 31.

[0034] Specifically, the support frame 31 includes a horizontally arranged base plate 311, a vertically fixed plate 312 on the base plate 311, and a top plate 313 on the upper end of the vertical plate 312. The base plate 311 and the top plate 313 are both arranged on the same side of the vertical plate 312 and the three can be integrally formed. The adjustment plate 34 is located between the base plate 311 and the top plate 313.

[0035] The screw 33 is rotatably mounted sequentially within the top plate 313, the adjusting plate 34, and the bottom plate 311. To facilitate rotation of the screw 33, a rotating handle 331 is fixedly connected to the screw 33 above the top plate 313. To ensure smooth rotation of the screw 33 within the top plate 313 and the bottom plate 311, existing bearings are fixedly embedded in both the top plate 313 and the bottom plate 311, with the screw 33 fixedly mounted within the inner ring of the bearings. It should be noted that the screw 33 is mounted within the bearing in the bottom plate 311 and cannot detach from the bearing, thus achieving a rotatable connection between the screw 33 and the bottom plate 311. Alternatively, a threaded hole can be provided on the adjusting plate 34, with the screw threadedly connected to this hole. Alternatively, a threaded sleeve 341 can be fixedly mounted within the adjusting plate 34, with the screw 33 threadedly connected to the threaded sleeve 341.

[0036] An upper pin 342 is fixedly inserted into the top plate 313 along the length of the roller 36. In this embodiment, the axis of the roller 36 is perpendicular to the end face of the vertical plate 312 and is arranged along the length of the pipe 1. A top plate clearance groove 314 is formed on the top plate 313 at the middle of the upper pin 342. The upper part of the clamping arm 35 is rotatably sleeved on the upper pin 342 in the top plate clearance groove 314. The clamping arm 35 has an inwardly curved arc structure, and the two clamping arms 35 are arranged opposite each other to form an encircling shape. A rotating bracket 351 is integrally formed or welded to the lower end of the clamping arm 35, and the roller 36 is rotatably connected to the rotating bracket 351.

[0037] Fixed shafts 315 are fixedly embedded on both sides of the base plate 311 along the length of the roller shaft 36. Rollers 32 are rotatably sleeved at both ends of the fixed shafts 315. A base plate clearance groove 316 is formed on the base plate 311 at the middle of the fixed shaft 315. One end of the hinge plate 37 is rotatably sleeved on the fixed shaft 315 in the base plate clearance groove 316, and the other end is rotatably connected to the clamping arm 35 through the lower pin 371. Thus, two sets of clamping arms 35, hinge plates 37, roller shafts 36, and rollers 32 are arranged symmetrically on the left and right sides. Each clamping arm 35 is provided with two hinge plates 37.

[0038] With the above structure, rotating the rotary handle 331 can rotate the screw to drive the adjusting plate 34 to move up and down, thereby driving the two clamping arms to move towards and away from each other. When the pipe 1 is supported by the support mechanism 2 and the pipe 1 is being cut, the two clamping arms move towards each other, causing the roller 32 and roller shaft 36 to abut against the outer circumference of the pipe 1. The two clamping arms 35 clamp the pipe 1, the roller 32 abuts against the upper outer circumference of the pipe 1, and the roller shaft 36 abuts against the lower outer circumference of the pipe 1. Since the axes of the roller 32 and roller shaft 36 are parallel to the axis of the pipe 1, the pipe 1 can rotate relative to the clamping and adjusting structure 3, thereby rotatably fixing the clamping and adjusting structure 3 to the pipe 1.

[0039] See Figure 2 , 3 As shown, the cutting machine 4 includes a housing 41 and a conventional cutting machine body 42 that can be detached from the housing 41. The cutting machine body 42 includes a grip 421 and a cutting blade 422, which are existing technologies and will not be described in detail here.

[0040] A connecting plate 43 is fixedly connected to the lower right side of the housing 41 of the cutting machine 4. A through hole 431 is provided on the connecting plate 43. The rotating shaft 43 is inserted into the through hole 431 and fixed within the vertical plate 312. That is, the connecting plate 43 is rotatably connected to the vertical plate 312 via the rotating shaft 43, which is threaded into the vertical plate 312. The connecting plate 43 is sleeved on the rotating shaft 43. The rotating shaft 43 can be a conventional bolt structure; the presence of a nut prevents the connecting plate 43 from detaching from the rotating shaft 43. Therefore, the cutting machine 4 can rotate using the rotating shaft 43 as its axis.

[0041] Furthermore, to guide the cutting machine 4 during rotation, an arc-shaped guide groove 317 is formed on the circumference of the rotating shaft 43. The guide groove 317 is formed on the vertical plate 312, and a guide block 45 is fixedly connected to the housing 41 of the cutting machine 4 by bolts. The guide block 45 can slide back and forth within the guide groove 317. In addition, to facilitate the installation of the guide block 45 within the guide groove 317, the upper right corner of the guide groove 317 has an open structure, and its lower left corner has a closed structure. For this purpose, a limit block 318 is detachably fixedly connected within the guide groove 317 by bolts, and the guide block 45 slides within the limit block 318.

[0042] In order to restrict the rotation of the cutting machine 4 when it is not in use, a limiting through hole 432 is provided on the connecting plate 43, and a vertical plate limiting hole is provided on the vertical plate 312. When the guide block 45 abuts against the limiting block 318, the axis of the limiting through hole 432 coincides with the axis of the vertical plate limiting hole, and the limiting pin 46 can be inserted into the limiting through hole 432 and the vertical plate limiting hole. At this time, the cutting machine 4 cannot rotate.

[0043] The working principle and process of this embodiment are as follows: Pipe placement and positioning: Place the lower support shaft 23 in the corresponding limiting groove 312 according to the required height, and place the pipe 1 to be cut on the nylon rollers 26 of the two support mechanisms 2. When the operator rotates the pipe 1, the pipe 1 can rotate on the nylon rollers 26. Pipe clamping: First, rotate the rotary handle 331 to move the adjusting plate 34 downwards, causing the two clamping arms 35 to move away from each other, i.e., open, locking the two clamping arms 35 onto the pipe 1. Then, rotate the rotary handle 331 to move the adjusting plate 34 upwards, causing the two clamping arms 35 to move towards each other until the roller 32 and roller shaft 36 abut against the pipe 1, completing the clamping of the pipe 1. Figure 1 As shown; Cutting operation: Remove the limit pin 46, start the cutting machine 4, the cutting blade 422 rotates at high speed, the operator presses down the grip 421 to make the cutting blade 422 contact the pipe 1, and the high-speed rotating cutting blade 422 cuts the pipe 1. During the cutting process, if the cutting position needs to be adjusted, it can be achieved by rolling the pipe 1. The operation is convenient and can ensure cutting accuracy and cut quality. After the cutting is completed, turn off the cutting machine 4, rotate the grip 421 in the opposite direction to make the guide block 45 abut against the limit block 318, insert the limit pin 46 to fix the cutting machine 4, rotate the rotating handle 331 in the opposite direction to make the adjusting plate 34 move downward and make the two clamping arms 35 move in opposite directions, and then remove it from the pipe 1.

[0044] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe cutting tool, characterized in that: Includes support mechanism, clamping and adjustment mechanism, and cutting machine; The support mechanism is used to support the pipeline, and the pipeline can rotate on the support mechanism; The clamping adjustment mechanism includes a support frame, two sets of rollers rotatably and oppositely arranged at the lower part of the support frame, a screw rotatably and vertically passing through the upper part of the support frame, an adjustment plate threaded onto the screw, clamping arms hinged to both sides of the adjustment plate, a roller shaft rotatably connected to the lower part of the clamping arms, and a hinge plate with both ends respectively hinged to the support frame and the clamping arms. The housing of the cutting machine is rotatably connected to the support frame; Rotating the screw can drive the adjusting plate to move up and down, thereby driving the two clamping arms to move towards and away from each other. When the pipe is supported by the support mechanism and the pipe is being cut, the rollers and roller shafts abut against the outer circumference of the pipe.

2. The pipe cutting tool according to claim 1, characterized in that: The support frame includes a horizontally arranged base plate, a vertically fixed plate connected to the base plate, and a top plate horizontally fixed to the upper end of the vertical plate. The screw is rotatably inserted into the top plate and threadedly connected to the adjusting plate.

3. The pipe cutting tool according to claim 2, characterized in that: The lower part of the screw is rotatably embedded in the base plate.

4. The pipe cutting tool according to claim 2, characterized in that: Fixed shafts are fixedly embedded on both sides of the base plate along the length of the roller shaft, and rollers are rotatably sleeved at both ends of the fixed shafts.

5. A pipe cutting tool according to claim 4, characterized in that: A bottom plate clearance groove is provided on the bottom plate at the middle of the fixed shaft. One end of the hinge plate is rotatably sleeved on the fixed shaft in the bottom plate clearance groove, and the other end is rotatably connected to the clamping arm through the lower pin.

6. A pipe cutting tool according to claim 2, characterized in that: An upper pin is fixedly inserted inside the top plate along the length of the roller shaft. A top plate clearance groove is opened on the top plate at the middle of the upper pin. The upper part of the clamping arm is rotatably connected to the upper pin inside the top plate clearance groove.

7. A pipe cutting tool according to claim 2, characterized in that: The housing of the cutting machine is rotatably connected to the vertical plate via a rotating shaft. An arc-shaped guide groove is formed on the circumference of the rotating shaft with the axis of rotation as the center. The guide groove is formed on the vertical plate. A guide block is fixedly connected to the housing of the cutting machine. The guide block can slide back and forth in the guide groove.

8. A pipe cutting tool according to claim 7, characterized in that: A limiting block is detachably and fixedly connected within the guide groove.

9. A pipe cutting tool according to claim 1, characterized in that: The support mechanism includes a base and a support frame. Multiple sets of base grooves are formed on the base along its length. The support frame includes two sets of X-shaped support plates arranged opposite each other. Each set of support plates can rotate relative to each other. A lower support shaft is fixedly connected to the lower end of the two sets of support plates, and an upper support shaft is fixedly connected to the upper end of the two sets of support plates. A nylon roller is rotatably sleeved on the upper support shaft. The two lower support shafts can be respectively embedded in the base grooves.

10. A pipe cutting tool according to claim 9, characterized in that: Limiting grooves are formed on the groove walls of the base grooves corresponding to the two lower support shafts respectively, and the two lower support shafts can be embedded in the corresponding limiting grooves.

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