Portable pipeline cutting device

Abstract

The invention discloses a portable pipeline cutting device which comprises a supporting frame, the supporting frame is arranged in a pipeline in the diameter direction of the pipeline, and the two ends of the supporting frame abut against the inner wall of the pipeline through protection plates so that the supporting frame can be fixedly arranged on the pipeline; a rotating frame is rotationally connected to the supporting frame, the rotating frame rotates around the center of the supporting frame, a clamping frame is arranged on the rotating frame in a sliding mode, and a grinding machine is connected to the clamping frame so that the grinding machine can rotationally cut along the outer wall of the pipeline. The portable pipeline cutting device can be suitable for pipelines of different sizes through the supporting frame, can be suitable for working conditions of different cutting lengths through the movable clamping frame, has no requirement for pipeline materials and surface cleanliness and is wide in application range, the cutting process is slightly affected by vibration, and cutting precision is high; and meanwhile, the pipeline rack is not high, the safety risk is reduced, the weight is light, pipe rotating is not needed in the cutting process, and the construction cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of marine oil engineering technology, and in particular relates to a portable pipeline cutting device. Background Technology

[0002] Currently, the pipeline cutting method commonly used at the final assembly site is a combination of hand-drawn lines and magnetic cutting machines. Before cutting the pipeline, it is necessary to elevate the pipeline to a high position. Due to the large size of the magnetic cutting machine, the pipeline needs to be elevated to a very high height.

[0003] Because magnetic cutting machines are bulky and difficult to move manually, and because ships use a large number of non-magnetic materials such as stainless steel for pipelines, they cannot be attracted by magnetic cutting machines and can only be cut manually using a grinding wheel. The surface of carbon steel pipelines needs to be kept clean; otherwise, thick rust and oil on the pipeline surface will significantly weaken the magnetic attraction of the magnetic cutting machine, causing the equipment to slip or even fall, posing a great safety risk. During the use of magnetic cutting machines, the pipeline needs to be rotated continuously, and at the same time, affected by the cutting vibration, the magnetic base and the pipeline surface will slide relative to each other, resulting in insufficient cutting accuracy.

[0004] Therefore, there is an urgent need to design a portable pipeline cutting device to solve the problems mentioned above. Summary of the Invention

[0005] To address the technical problems mentioned in the background art, such as the inability of magnetic cutting machines to attract non-magnetic pipelines, requiring manual cutting with a grinding wheel, and the insufficient cutting accuracy caused by relative sliding between the magnetic base and the pipeline surface due to cutting vibration, a portable pipeline cutting device is provided to solve these problems.

[0006] To achieve the above objectives, the specific technical solution of the portable pipeline cutting device of the present invention is as follows: A portable pipeline cutting device includes a support frame, which is disposed inside the pipeline along the diameter direction. Both ends of the support frame abut against the inner wall of the pipeline through protective plates to fix the support frame on the pipeline. A rotating frame is rotatably connected to the support frame and rotates around the center of the support frame. A clamping frame is slidably disposed on the rotating frame and a grinding wheel is connected to the clamping frame to make the grinding wheel rotate and cut along the outer wall of the pipeline.

[0007] Furthermore, the support frame includes a first support rod and a second support rod, with one end of the first support rod and the second support rod being staggered so that the first support rod and the second support rod are located on a straight line.

[0008] Furthermore, a third support rod is slidably provided at the end of the first support rod away from the second support rod, and a fourth support rod is slidably provided at the end of the second support rod away from the first support rod. Both the third and fourth support rods are connected to a protective plate so that the third and fourth support rods abut against the inner wall of the pipeline through the protective plate.

[0009] Furthermore, a first adjusting bolt and a second adjusting bolt are screwed onto the first support rod and the second support rod, respectively. By rotating the first adjusting bolt or the second adjusting bolt, the third support rod and the fourth support rod are fixedly mounted on the first support rod and the second support rod, respectively.

[0010] Furthermore, a pivot is provided at the connection between the first support rod and the second support rod, and the inner ring of the pivot is connected to the rotating frame to make the rotating frame rotate.

[0011] Furthermore, the rotating frame includes a connecting rod and a first fixed sleeve, the first fixed sleeve being connected to the inner ring of the rotating shaft via the connecting rod, so that the first fixed sleeve rotates around the rotating shaft.

[0012] Furthermore, a first square tube is inserted into the first fixed sleeve, and a third adjusting bolt is provided on the first fixed sleeve. By rotating the third adjusting bolt, the first square tube is fixed on the first fixed sleeve.

[0013] Furthermore, the end of the first square tube away from the first fixed sleeve is connected to a second fixed sleeve, and the second fixed sleeve is provided with a fourth adjusting bolt. By rotating the fourth adjusting bolt, the clamping frame is fixed on the second fixed sleeve.

[0014] Furthermore, the clamping frame includes a second square tube and a fixing plate, the fixing plate being connected to one end of the second square tube, and the end of the second square tube away from the fixing plate being inserted into a second fixing sleeve.

[0015] Furthermore, a grinding wheel is provided on the fixed plate to allow the grinding wheel to rotate and cut.

[0016] The portable pipe cutting device of the present invention has the following advantages: The support frame is adaptable to pipelines of different sizes, and the movable clamping frame allows for different cutting lengths. It has no requirements regarding pipeline material or surface cleanliness, making it widely applicable. The cutting process is minimally affected by vibration and offers high cutting precision. Furthermore, the pipeline support height is low, reducing safety risks. This application is lightweight, and the cutting process eliminates the need for pipe rotation, reducing equipment handling and rotation work, significantly improving construction efficiency and lowering construction costs. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the portable pipeline cutting device of the present invention; Figure 2This is a schematic diagram showing the connection between the support frame, rotating frame, and clamping frame of the portable pipeline cutting device of the present invention. Figure 3 This is a schematic diagram of the support frame of the portable pipeline cutting device of the present invention; Figure 4 This is a schematic diagram of the rotating frame of the portable pipeline cutting device of the present invention; Figure 5 This is a schematic diagram of the structure of the clamping frame of the portable pipeline cutting device of the present invention.

[0018] Explanation of markings in the diagram: 1. Pipeline; 2. Support frame; 21. First support rod; 22. Second support rod; 23. Third support rod; 24. Fourth support rod; 3. Guard plate; 4. Rotating frame; 41. Connecting rod; 42. First fixing sleeve; 43. First square tube; 44. Second fixing sleeve; 5. Clamping frame; 51. Second square tube; 52. Fixing plate; 6. Grinding wheel; 7. First adjusting bolt; 8. Second adjusting bolt; 9. Third adjusting bolt; 10. Fourth adjusting bolt; 11. Rotating shaft. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0021] The following is a reference to the appendix. Figure 1 To be continued Figure 5 The portable pipe cutting device of the present invention is described.

[0022] like Figure 1As shown, the portable pipeline cutting device of the present invention includes a support frame 2, which is disposed inside the pipeline 1 along the diameter direction of the pipeline 1. Both ends of the support frame 2 are respectively abutted against the inner wall of the pipeline 1 through protective plates 3, so that the support frame 2 is fixedly disposed on the pipeline 1. A rotating frame 4 is rotatably connected to the support frame 2, and the rotating frame 4 rotates around the center of the support frame 2. A clamping frame 5 is slidably disposed on the rotating frame 4, and a grinding wheel 6 is connected to the clamping frame 5, so that the grinding wheel 6 rotates and cuts along the outer wall of the pipeline 1.

[0023] The support frame 2 can be used for pipelines of different sizes, and the movable clamping frame 5 can be used for different cutting lengths. There are no requirements for the material and surface cleanliness of the pipeline 1. It has a wide range of applications, and the cutting process is less affected by vibration and has high cutting accuracy. At the same time, the pipeline 1 is not raised too high, which reduces safety risks.

[0024] Furthermore, such as Figure 1 and Figure 3 As shown, the support frame 2 includes a first support rod 21 and a second support rod 22. One end of the first support rod 21 and the second support rod 22 are staggered so that the first support rod 21 and the second support rod 22 are in a straight line. A third support rod 23 is slidably provided at the end of the first support rod 21 away from the second support rod 22, and a fourth support rod 24 is slidably provided at the end of the second support rod 22 away from the first support rod 21. Both the third support rod 23 and the fourth support rod 24 are connected to a protective plate 3 so that the third support rod 23 and the fourth support rod 24 abut against the inner wall of the pipeline 1 through the protective plate 3. A first adjusting bolt 7 and a second adjusting bolt 8 are screwed onto the first support rod 21 and the second support rod 22, respectively. By rotating the first adjusting bolt 7 or the second adjusting bolt 8, the third support rod 23 and the fourth support rod 24 are fixedly installed on the first support rod 21 and the second support rod 22, respectively.

[0025] In this embodiment, preferably, the first support rod 21 and the second support rod 22 are of the same length, and one end of the first support rod 21 and the second support rod 22 are fixedly connected in a staggered manner, so that the first support rod 21 and the second support rod 22 are on a straight line.

[0026] A third support rod 23 is inserted into the end of the first support rod 21 away from the second support rod 22, allowing the third support rod 23 to slide on the first support rod 21. A fourth support rod 24 is inserted into the end of the second support rod 22 away from the first support rod 21. A protective plate 3 is fixedly connected to both the end of the third support rod 23 away from the first support rod 21 and the end of the fourth support rod 24 away from the second support rod 22. By changing the extension length of the third support rod 23 and the fourth support rod 24, the protective plate 3 is made to abut against the inner wall of the pipeline 1, and the first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 are fixedly arranged along the diameter direction of the pipeline 1.

[0027] The first support rod 21 and the second support rod 22 are respectively screwed with the first adjusting bolt 7 and the second adjusting bolt 8. By rotating the first adjusting bolt 7 and the second adjusting bolt 8, the extension length of the third support rod 23 and the fourth support rod 24 can be adjusted, and the third support rod 23 and the fourth support rod 24 can be fixedly set on the first support rod 21 and the second support rod 22 respectively.

[0028] Furthermore, such as Figure 2 and Figure 4 As shown, a rotating shaft 11 is provided at the connection between the first support rod 21 and the second support rod 22. The inner ring of the rotating shaft 11 is connected to the rotating frame 4 so that the rotating frame 4 can rotate. The rotating frame 4 includes a connecting rod 41 and a first fixing sleeve 42. The first fixing sleeve 42 is connected to the inner ring of the rotating shaft 11 through the connecting rod 41 so that the first fixing sleeve 42 can rotate around the rotating shaft 11. A first square tube 43 is inserted into the first fixing sleeve 42. A third adjusting bolt 9 is provided on the first fixing sleeve 42. Rotating the third adjusting bolt 9 can fix the first square tube 43 on the first fixing sleeve 42.

[0029] In this embodiment, preferably, the first support rod 21 and the second support rod 22 are fixedly connected to the outer ring of the rotating shaft 11, and a rotating frame 4 is connected to the inner ring of the rotating shaft 11. Since the rotating shaft 11 is set at the center of the pipeline 11, the rotating frame 4 rotates around the center of the pipeline 1.

[0030] The rotating frame 4 consists of a connecting rod 41 and a first fixed sleeve 42. The first fixed sleeve 42 is perpendicularly connected to the connecting rod 41. The end of the connecting rod 41 away from the first fixed sleeve 42 is perpendicularly connected to the inner ring of the rotating shaft 11, thereby causing the first fixed sleeve 42 to rotate around the center of the pipeline 1. A first square tube 43 is inserted into the first fixed sleeve 42. The first square tube 43 can slide along the length of the first fixed sleeve 42. A third adjusting bolt 9 is provided on the first fixed sleeve 42. By rotating the third adjusting bolt 9, the first square tube 43 is fixed on the first fixed sleeve 42.

[0031] Furthermore, such as Figure 4 and Figure 5 As shown, the first square tube 43 is connected to a second fixed sleeve 44 at the end away from the first fixed sleeve 42. The second fixed sleeve 44 is provided with a fourth adjusting bolt 10. Rotating the fourth adjusting bolt 10 will fix the clamping frame 5 on the second fixed sleeve 44. The clamping frame 5 includes a second square tube 51 and a fixed plate 52. The fixed plate 52 is connected to one end of the second square tube 51. The end of the second square tube 51 away from the fixed plate 52 is inserted into the second fixed sleeve 44. The fixed plate 52 is provided with a grinding wheel 6 so that the grinding wheel 6 can rotate and cut.

[0032] In this embodiment, preferably, a second fixing sleeve 44 is vertically connected to the end of the first square tube 43 away from the first fixing sleeve 42, so that the second fixing sleeve 44 and the connecting rod 41 are in a straight line. A fourth adjusting bolt 10 is provided on the second fixing sleeve 44. Rotating the fourth adjusting bolt 10 will fix the clamping frame 5 on the second fixing sleeve 44.

[0033] Preferably, the clamping frame 5 consists of a second square tube 51 and a fixing plate 52. The fixing plate 52 is connected to one end of the second square tube 51. The end of the second square tube 51 away from the fixing plate 52 is inserted into the second fixing sleeve 44, thereby allowing the second square tube 51 to move along the length of the second fixing sleeve 44. The second square tube 51 can be fixed in position by the fourth adjusting bolt 10. A grinding wheel 6 is provided on the fixing plate 52, so that the pipeline 1 can be cut by rotating the grinding wheel 6.

[0034] The working principle of the portable pipeline cutting device in this invention is as follows: First, extend the third support rod 23 along the end of the first support rod 21 and extend the fourth support rod 24 along the end of the second support rod 22. Rotate the first adjusting bolt 7 and the second adjusting bolt 8 so that the third support rod 23 and the fourth support rod 24 abut against the inner wall of the pipeline 1 through the protective plate 3, and set the first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 along the diameter direction of the pipeline 1. Then, adjust the position of the first square tube 43 extending out of the first fixed sleeve 42 to determine the cutting distance between the grinding wheel 6 and the outer wall of the pipeline 1; Then, adjust the position of the second square tube 51 extending out of the second fixed sleeve 44 to determine the cutting position of the grinding wheel 6 on the outer wall of the pipeline 1; Finally, the first square tube 43 rotates via the shaft 11, thereby causing the grinding wheel 6 to cut around the outer wall of the pipe 1.

[0035] Based on the portable pipeline cutting device, the present invention is lightweight and does not require pipe turning during the cutting process, which reduces the workload of equipment handling and pipe turning, significantly improves construction efficiency and reduces construction costs.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A portable pipeline cutting device, characterized in that, It includes a support frame, which is installed inside the pipeline along the pipeline diameter direction. Both ends of the support frame abut against the inner wall of the pipeline through protective plates, so that the support frame is fixedly installed on the pipeline. A rotating frame is rotatably connected to the support frame. The rotating frame rotates around the center of the support frame. A clamping frame is slidably mounted on the rotating frame. A grinding wheel is connected to the clamping frame so that the grinding wheel can rotate and cut along the outer wall of the pipeline.

2. The portable pipeline cutting device according to claim 1, characterized in that, The support frame includes a first support rod and a second support rod, with one end of the first support rod and the second support rod being staggered so that the first support rod and the second support rod are on a straight line.

3. The portable pipeline cutting device according to claim 2, characterized in that, A third support rod is slidably provided at the end of the first support rod away from the second support rod, and a fourth support rod is slidably provided at the end of the second support rod away from the first support rod. Both the third and fourth support rods are connected to a protective plate so that the third and fourth support rods abut against the inner wall of the pipeline through the protective plate.

4. The portable pipeline cutting device according to claim 3, characterized in that, The first support rod and the second support rod are respectively screwed with a first adjusting bolt and a second adjusting bolt. By rotating the first adjusting bolt or the second adjusting bolt, the third support rod and the fourth support rod are respectively fixedly installed on the first support rod and the second support rod.

5. The portable pipeline cutting device according to claim 2, characterized in that, A pivot is provided at the connection between the first support rod and the second support rod. The inner ring of the pivot is connected to the rotating frame so that the rotating frame can rotate.

6. The portable pipeline cutting device according to claim 5, characterized in that, The rotating frame includes a connecting rod and a first fixed sleeve. The first fixed sleeve is connected to the inner ring of the rotating shaft through the connecting rod, so that the first fixed sleeve can rotate around the rotating shaft.

7. The portable pipeline cutting device according to claim 6, characterized in that, A first square tube is inserted into the first fixed sleeve. The first fixed sleeve is provided with a third adjusting bolt. By rotating the third adjusting bolt, the first square tube is fixed on the first fixed sleeve.

8. The portable pipeline cutting device according to claim 7, characterized in that, The first square tube is connected to a second fixed sleeve at the end away from the first fixed sleeve. The second fixed sleeve is provided with a fourth adjusting bolt. Rotating the fourth adjusting bolt will fix the clamping frame on the second fixed sleeve.

9. The portable pipeline cutting device according to claim 1, characterized in that, The clamping frame includes a second square tube and a fixing plate. The fixing plate is connected to one end of the second square tube, and the end of the second square tube away from the fixing plate is inserted into a second fixing sleeve.

10. The portable pipeline cutting device according to claim 9, characterized in that, A grinding wheel is mounted on the fixed plate to allow it to rotate and cut.

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