A portable auxiliary device for a heat pipe

Abstract

The application belongs to the technical field of pipeline cutting, in particular to a portable auxiliary equipment for heat pipeline, which comprises a positioning ring, a gear ring is slidably arranged on the lower surface of the positioning ring, a cutter is arranged below the gear ring, the cross section of the positioning ring is a semi-circular ring, adjusting assemblies are arranged at both ends of the positioning ring, the adjusting assemblies comprise two groups of rotating rods fixed at both ends of the positioning ring, a first motor is fixed on one side of the rotating rod, a rotating shaft is rotatably connected to one end of the rotating rod, a rotating ring is fixed on the circumferential surface of the rotating shaft, an auxiliary ring is arranged in the rotating ring, the two auxiliary rings can be spliced with the gear ring, and the spliced positioning ring and rotating ring are sleeved on the circumferential surface of the pipe body; auxiliary assemblies are arranged on both sides of the positioning ring, the auxiliary assemblies comprise a storage tank arranged on one side of the positioning ring, and the storage tank stores cutting fluid, and the adjusting assemblies are arranged to solve the problem of complicated pipeline cutting process.

Description

Technical Field

[0001] This invention belongs to the field of pipe cutting technology, specifically a portable auxiliary device for thermal pipes. Background Technology

[0002] As the carrier of urban centralized heating networks, heating pipelines are responsible for transporting high-temperature media to various heating stations and are an indispensable component of the heating system. During the laying and renovation phases of heating pipelines, it is necessary to cut the pipeline body according to the design dimensions to obtain pipe sections of matching specifications, thereby completing the pipeline connection and assembly and ensuring the smooth implementation of the heating pipeline construction work.

[0003] A patent with publication number CN116422964B discloses a pipe cutting fixture for a heating station, including a guide rail, a mounting plate, a cutting device, and a drive assembly. The guide rail is ring-shaped and fitted onto the outer surface of the pipe. The mounting plate is mounted on the guide rail, and both the cutting device and the drive assembly are mounted on the mounting plate. The cutting device is used to cut the pipe, and the drive assembly can drive the cutting device to move along the guide rail on the pipe. When pipe cutting is required, the cutting device is aligned with the cutting position on the pipe. After starting the cutting device and the drive assembly, the cutting device cuts the pipe, and the drive assembly drives the cutting device to move along the guide rail on the pipe, thus completing the pipe cutting process.

[0004] However, existing pipe cutting equipment used in heating stations requires the entire device to be inserted into the pipe end and then moved along the pipe axis to the predetermined cutting position. When space is limited at both ends of the pipe, or when the middle section of the pipe needs to be cut, the insertion and movement of the equipment are greatly restricted, making the installation process cumbersome and time-consuming. In addition, the cutting blade of this type of equipment is located below the equipment and abuts against the pipe wall. The pipe cutting mark is usually marked on the upper part of the outer wall of the pipe, and the operator cannot see the alignment of the cutting blade with the mark line. They can only rely on visual observation from the side, which makes it difficult to ensure that the cutting edge is accurately aligned with the cutting mark. The manual visual alignment method is prone to positional deviations, and the alignment accuracy is greatly affected by the operator's experience, the ambient light, and the operator's posture. Once the alignment is inaccurate, it will cause the cutting dimensions to exceed the tolerance, affecting the quality of subsequent pipe assembly and welding, and increasing the probability of rework on site.

[0005] Therefore, the present invention provides a portable auxiliary device for thermal pipelines. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A portable auxiliary device for thermal pipelines according to this invention includes a positioning ring, a gear ring slidably disposed on the lower surface of the positioning ring, a cutter disposed below the gear ring, the positioning ring having a semi-circular cross-section, and adjustment components disposed at both ends of the positioning ring. The adjustment components include two sets of rotating rods fixedly connected to both ends of the positioning ring, a first motor fixedly connected to one side of each rotating rod, and a rotating shaft rotatably connected to one end of each rotating rod. A rotating ring is fixedly connected to the circumferential surface of the rotating shaft, and an auxiliary ring is disposed inside the rotating ring. The two auxiliary rings and the gear ring can be spliced ​​together, and the spliced ​​positioning ring and rotating ring are fitted onto the circumferential surface of the pipe body. Auxiliary components are disposed on both sides of the positioning ring, and each auxiliary component includes a storage tank disposed on the positioning side. The storage tank stores cutting fluid, which is used to assist the cutter in cutting.

[0008] Preferably, the adjustment assembly further includes a rotating cavity inside the positioning ring. The outer walls of the positioning ring and the rotating ring are both fixedly connected to a fixing plate. A second motor is fixedly connected to the upper surface of the fixing plate. The output end of the second motor is driven by a transmission belt. One end of the transmission belt is driven by a transmission shaft. One end of the transmission shaft is fixedly connected to a fixed gear. The fixed gear meshes with a gear ring and an auxiliary ring.

[0009] Preferably, the inner wall of the rotating cavity is provided with a rotating groove, and arc-shaped strips are fixed to both sides of the gear ring and the auxiliary ring, which are used to limit the position of the gear ring and the auxiliary ring.

[0010] Preferably, both ends of the gear ring are provided with splicing components. The splicing component includes a positioning groove formed inside the gear ring. A spring is fixed to the top wall of the positioning groove, and a magnetic block is fixed to the bottom end of the spring. A magnetic plate is fixed to one end of the auxiliary ring. A connecting groove is formed inside the magnetic plate, and the cross-section of the connecting groove is adapted to the end of the magnetic block.

[0011] Preferably, the auxiliary component further includes a fixing tube fixed to both sides of the positioning ring. A handle is fixed to the top of the fixing tube, a positioning plate is provided on the side of the fixing tube, an auxiliary plate is fixed to one side of the positioning plate, a connecting cavity is opened in the auxiliary plate, a connecting spring is fixed to the top wall of the connecting cavity, and a cone is fixed to the bottom end of the connecting spring. The cone abuts against the auxiliary marking line, and the distance between the auxiliary marking line and the cutting marking line is fixed. The cone abuts against the auxiliary marking line to assist the cutter in abutting the cutting point.

[0012] Preferably, one side of the auxiliary plate is fixedly connected to the storage box, and an auxiliary hole is provided on one side of the auxiliary plate. A limit hole is provided inside the storage box, and the auxiliary hole is aligned with the limit hole. A positioning hole is provided on the surface of the cone, and a connecting hole is provided inside the auxiliary plate. After the cone is retracted into the connecting cavity, the positioning hole is aligned with the auxiliary hole. A plurality of spray holes are provided on the inner wall of the positioning ring, and the plurality of spray holes are connected to the connecting hole.

[0013] Preferably, each of the rotating rings is provided with a limiting component at its end. The limiting component includes two sliding grooves formed at the end of the rotating ring. A telescopic rod is fixedly connected inside the sliding groove. One end of the two telescopic rods is fixedly connected to the same sliding plate. A sliding spring is sleeved on the circumferential surface of the telescopic rod. Two rotating blocks are fixedly connected to one end of the sliding plate. A shaft is provided between the two rotating blocks and the sliding plate. A torsion spring is sleeved on the circumferential surface of the shaft. The ends of the two rotating blocks are also fixedly connected to the same top plate.

[0014] Preferably, when cutting the heat pipe, the built-in motor inside the gear ring is first started to drive the cutter to rotate. Then, by holding the two handles and lowering the positioning ring, the cutter will first cut into the pipe. After the positioning ring abuts against the pipe, the first motor at both ends of the positioning ring is started. The first motor drives the transmission chain inside the rotating rod, which in turn drives the rotating shaft at one end of the rotating rod to rotate. The rotation of the rotating shaft causes the rotating ring to move closer to the pipe, so that both rotating rings and the positioning ring abut against the pipe, thus splicing them into a concave arc ring. During the splicing process, when the rotating ring abuts against the positioning ring, the rotating ring presses against the magnetic block at the end of the positioning ring. This causes the magnetic block to retract into the positioning groove. When the rotating ring and the positioning ring are fully aligned, the magnetic block is ejected by the spring force and inserted into the connecting groove opened inside the magnetic plate, completing the magnetic attraction with the magnetic plate. This splices the gear ring with the two auxiliary rings. After the splicing is completed, the second motor on the surface of the positioning ring and the rotating ring is started. The second motor drives the transmission belt to drive the transmission shaft to rotate, which in turn drives the fixed gear to rotate. The gear inside the positioning ring and the rotating ring drives the spliced ​​gear ring to rotate, which in turn drives the cutting blade to cut around the tube. Before cutting, the bottom of the tube needs to be raised to assist the cutting work of the gear ring.

[0015] Preferably, during the process of aligning the cutter below the positioning ring with the cutting point, a cutting mark line and an auxiliary mark line are drawn on the surface of the tube. The distance between the cutting mark line and the auxiliary mark line is fixed. When the positioning ring is docked, the auxiliary marks on both sides of the positioning ring are simultaneously docked with the auxiliary mark line. Since the distance between the cones set in the cutter and the auxiliary plate is the same as the distance between the cutting mark line and the auxiliary mark line, the cutter is determined to abut the cutting mark line by having the cones on both sides abut the auxiliary mark line. After the cones abut the auxiliary mark line, the cones are squeezed into the connecting cavity inside the auxiliary plate, so that the positioning hole on the side of the cone is aligned with the auxiliary hole on the side of the auxiliary plate, thereby connecting the limiting hole, auxiliary hole, positioning hole in the storage tank and the connecting hole in the positioning plate. Then, driven by the pressure pump inside the storage tank, the cutting fluid stored inside is pressurized and enters the positioning ring, and then sprays out from the spray hole on the inner wall of the positioning ring, assisting the cutter to perform the cutting work.

[0016] Preferably, before the auxiliary ring is spliced ​​with the gear ring, a limiting component is set at the end of the rotating ring to limit the auxiliary ring. The sliding plate is slidably set at the end of the rotating ring, and the sliding is assisted by the sliding spring and the telescopic rod in the sliding groove. Then, the top plate rotates at one end of the sliding plate. Under the action of the torsion spring, the initial position is in contact with the end of the rotating ring. During the rotation of the gear ring, the auxiliary ring rotates in a ring shape to squeeze the top plate to rotate, and the sliding plate slides to assist the auxiliary ring in rotating. At the same time, after the auxiliary ring and the gear ring have completed the cutting work and reset, the top plate is reset under the action of the torsion spring force and abuts against the auxiliary ring again to perform the limiting work.

[0017] The beneficial effects of this invention are as follows: 1. The portable auxiliary device for thermal pipelines described in this invention utilizes a magnetically connected structure of a positioning ring and a rotating ring. This eliminates the need to insert the device entirely from the pipe end; the rings can be directly assembled at the point where the pipe is to be cut. This adapts to mid-section pipe cutting conditions, reducing on-site installation difficulty. The positioning ring and rotating ring automatically engage magnetically with a magnetic block and spring, ensuring convenient and reliable assembly and improving device positioning efficiency. A second motor drives the gear ring to rotate around the pipe, causing the cutter to continuously cut along the pipe's circumference. The cutting trajectory is regular, ensuring a clean cut. Before operation, the bottom of the pipe is raised to provide space for the cutter to enter. Combined with the gear ring's circumferential feeding, interference with the pipe wall is avoided. The entire mechanism is easy to assemble, reducing errors caused by manual visual alignment, improving the cutting accuracy of thermal pipelines, facilitating subsequent pipe assembly and welding, and reducing construction rework rates.

[0018] 2. The portable auxiliary device for thermal pipelines described in this invention utilizes fixed-interval cutting marking lines and auxiliary marking lines on the pipe body, along with conical blocks on both sides of the positioning ring, to achieve alignment. By leveraging the fixed distance between the conical blocks and the cutter, simply placing the conical blocks against the auxiliary marking lines indirectly ensures the cutter is precisely aligned with the cutting marking lines. This eliminates the traditional method of relying on manual visual observation for cutter alignment, significantly improving alignment accuracy. After the conical blocks are compressed and retracted, the channels automatically align, connecting the cutting fluid delivery path. Under the action of a pressure pump, cutting fluid is sprayed from the nozzles on the inner wall of the positioning ring, continuously cooling and lubricating the cutting position. This alignment and fluid supply linkage structure makes the alignment operation simple and intuitive, reducing human error. The cutting fluid supply automatically starts upon alignment completion, requiring no separate control, effectively reducing cutter wear, improving cut quality, and meeting the needs of on-site cutting operations for thermal pipelines. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the tube body of the present invention; Figure 3 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 4 This is a schematic diagram of the structure of the driving component of the present invention; Figure 5 This is a cross-sectional view of the positioning ring of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the gear ring of the present invention; Figure 7 This is a structural schematic diagram of the splicing component of the present invention; Figure 8 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 9 This is a schematic diagram of the structure of the auxiliary component of the present invention; In the diagram: 1. Pipe body; 2. Positioning ring; 21. Rotating ring; 22. Cutter; 23. Spray nozzle; 24. First motor; 25. Rotating rod; 26. Rotating shaft; 27. Fixing plate; 28. Second motor; 29. ​​Transmission belt; 210. Transmission shaft; 211. Fixed gear; 212. Gear ring; 213. Rotating cavity; 214. Auxiliary ring; 215. Rotating groove; 216. Arc-shaped strip; 217. Positioning groove; 218. Spring; 219. Magnetic block; 220. Magnetic plate; 221. Connecting groove; 3. Fixing tube; 31. Handle; 32. Positioning plate; 33. Auxiliary plate; 34. Storage box; 35. Connecting cavity; 36. Connecting spring; 37. Conical block; 38. Positioning hole; 39. Auxiliary hole; 310. Limiting hole; 311. Connecting hole; 4. Sliding plate; 41. Sliding groove; 42. Sliding spring; 43. Telescopic rod; 44. Rotating block; 45. Torsion spring; 46. Top plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1: As Figures 1 to 9 As shown in the embodiment of the present invention, a portable auxiliary device for a thermal pipeline has a gear ring slidably disposed on the lower surface of a positioning ring, and a cutter disposed below the gear ring. The positioning ring has a semi-circular cross-section, and adjustment components are disposed at both ends of the positioning ring. Each adjustment component includes two sets of rotating rods fixedly connected to both ends of the positioning ring. A first motor is fixedly connected to one side of each rotating rod, and a rotating shaft is rotatably connected to one end of each rotating rod. A rotating ring is fixedly disposed on the circumferential surface of the rotating shaft. An auxiliary ring is disposed inside the rotating ring. The two auxiliary rings and the gear ring can be spliced ​​together, and the spliced ​​positioning ring and rotating ring are fitted onto the circumferential surface of the pipe body. Auxiliary components are disposed on both sides of the positioning ring. Each auxiliary component includes a storage tank on the positioning side, which stores cutting fluid to assist the cutter in cutting. The adjustment components also include... The positioning ring has a rotating cavity inside. Both the positioning ring and the rotating ring have fixed plates on their outer walls. A second motor is fixed to the upper surface of the fixed plates. The output end of the second motor is connected to a transmission belt. One end of the transmission belt is connected to a transmission shaft. One end of the transmission shaft has a fixed gear fixed to it. The fixed gear meshes with the gear ring and the auxiliary ring. A rotating groove is formed in the inner wall of the rotating cavity. Arc-shaped strips are fixed to both sides of the gear ring and the auxiliary ring, used for limiting the movement of the gear ring and the auxiliary ring. Both ends of the gear ring have splicing components. Each splicing component includes a positioning groove inside the gear ring. A spring is fixed to the top wall of the positioning groove, and a magnetic block is fixed to the bottom end of the spring. A magnetic plate is fixed to one end of the auxiliary ring. The magnetic plate has a connecting groove inside, the cross-section of which matches the end of the magnetic block.

[0023] Specifically, existing pipe cutting equipment used in heating stations requires the entire device to be inserted into the pipe end and then moved along the pipe axis to the predetermined cutting position. When space is limited at both ends of the pipe or when the middle section of the pipe needs to be cut, the insertion and movement of the equipment are greatly restricted, the installation process is cumbersome, and it takes a lot of time. At the same time, the cutting blade of this type of equipment is located below the equipment and abuts against the pipe wall. The pipe cutting mark is usually marked on the upper part of the outer wall of the pipe. Operators cannot see the alignment of the cutting blade with the marking line directly. They can only rely on visual observation from the side, which makes it difficult to ensure that the cutting edge is accurately aligned with the cutting mark. The manual visual alignment method is prone to positional deviation. The alignment accuracy is greatly affected by the operator's experience, the ambient light, and the operator's posture. Once the alignment is inaccurate, it will cause the cutting size to exceed the tolerance, which will affect the quality of subsequent pipe assembly and welding and increase the probability of rework on site. Therefore, this invention solves the above problems by setting the above structure. Firstly, when cutting the thermal tube, the built-in motor inside the gear ring is activated to drive the cutter to rotate. Then, by holding the two handles and lowering the positioning ring, the cutter will first cut into the tube. After the positioning ring abuts against the tube, the first motors at both ends of the positioning ring are activated. The first motors drive the transmission chain inside the rotating rod, which in turn drives the rotating shaft at one end of the rotating rod to rotate. The rotation of the rotating shaft causes the rotating rings to move closer to the tube, so that both rotating rings and the positioning ring abut against the tube, thus splicing them into a concave arc ring. During the splicing process, when the rotating rings abut against the positioning rings, the rotating rings squeeze... The magnetic block at the end of the positioning ring is pressed, causing it to retract into the positioning groove. When the rotating ring and the positioning ring are fully aligned, the magnetic block is ejected by the spring force and inserted into the connecting groove opened inside the magnetic plate, completing the magnetic attraction with the magnetic plate. The gear ring is then spliced ​​with the two auxiliary rings. After the splicing is completed, the second motor on the surface of the positioning ring and the rotating ring is started. The second motor drives the transmission belt to rotate the transmission shaft, which in turn drives the fixed gear to rotate. The gear inside the positioning ring and the rotating ring drives the spliced ​​gear ring to rotate, which in turn drives the cutting blade to cut around the tube. Before cutting, the bottom of the tube needs to be raised to assist the cutting work of the gear ring. The magnetic splicing structure of the positioning ring and the rotating ring eliminates the need to insert the entire device into the pipe from the end. The ring can be assembled directly at the point where the pipe is to be cut, adapting to the cutting conditions in the middle of the pipe and reducing on-site installation difficulty. When the positioning ring and the rotating ring are connected, they automatically engage magnetically with the magnetic blocks and springs, making assembly convenient and reliable and improving the positioning efficiency of the equipment. The gear ring is driven by a second motor to rotate around the pipe, driving the cutter to continuously cut along the circumference of the pipe. The cutting trajectory is regular, ensuring a clean cut. Before operation, the bottom of the pipe is raised to leave space for the cutter to enter. With the gear ring feeding around the pipe, interference with the pipe wall is avoided. The entire mechanism is easy to assemble and align, reducing errors caused by manual visual alignment, improving the cutting accuracy of thermal pipelines, facilitating subsequent pipe assembly and welding, and reducing the construction rework rate.

[0024] Example 2: Figures 1 to 9 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the auxiliary component further includes a fixed tube fixed to both sides of the positioning ring, a handle fixed to the top of the fixed tube, a positioning plate provided on the side of the fixed tube, an auxiliary plate fixed to one side of the positioning plate, a connecting cavity opened in the auxiliary plate, a connecting spring fixed to the top wall of the connecting cavity, a cone fixed to the bottom end of the connecting spring, the cone abutting against the auxiliary marking line, the distance between the auxiliary marking line and the cutting marking line being fixed, the cone abutting against the auxiliary marking line is used to assist the cutter in abutting the cutting point; one side of the auxiliary plate is fixed to the storage box, an auxiliary hole is opened on one side of the auxiliary plate, a limit hole is opened in the storage box, the auxiliary hole is aligned with the limit hole, a positioning hole is opened on the surface of the cone, a connecting hole is opened inside the auxiliary plate, after the cone retracts into the connecting cavity, the positioning hole is aligned with the auxiliary hole, a plurality of spray holes are opened on the inner wall of the positioning ring, and the plurality of spray holes communicate with the connecting hole.

[0025] Specifically, during the process of aligning the cutter below the positioning ring with the cutting point, a cutting mark line and an auxiliary mark line are drawn on the surface of the tube. The distance between the cutting mark line and the auxiliary mark line is fixed. When the positioning ring is connected, the auxiliary marks on both sides of the positioning ring are simultaneously connected to the auxiliary mark line. Since the distance between the cones set in the cutter and the auxiliary plate is the same as the distance between the cutting mark line and the auxiliary mark line, the cutter is determined to be in contact with the cutting mark line by having the cones on both sides abut against the auxiliary mark line. After the cones abut against the auxiliary mark line, the cones are squeezed into the connecting cavity inside the auxiliary plate, so that the positioning hole on the side of the cone is aligned with the auxiliary hole on the side of the auxiliary plate, thereby connecting the limiting hole, auxiliary hole, positioning hole in the storage tank and the connecting hole in the positioning plate. Then, driven by the pressure pump inside the storage tank, the cutting fluid stored inside is pressurized and enters the positioning ring, and then sprays out from the spray hole on the inner wall of the positioning ring to assist the cutter in cutting. By utilizing the fixed-interval cutting markings and auxiliary markings on the pipe body, and cooperating with the conical blocks on both sides of the positioning ring to complete the alignment, and by leveraging the fixed distance between the conical blocks and the cutter, simply placing the conical blocks against the auxiliary markings indirectly ensures that the cutter is accurately aligned with the cutting markings. This eliminates the traditional method of relying on manual visual observation for cutter alignment, significantly improving alignment accuracy. After the conical blocks are compressed and retracted, the channels automatically align, connecting the cutting fluid delivery path. Under the action of the pressure pump, the cutting fluid is sprayed from the nozzles on the inner wall of the positioning ring, continuously cooling and lubricating the cutting position. This alignment and fluid supply linkage structure makes the alignment operation simple and intuitive, reducing human judgment errors. The cutting fluid supply automatically starts upon completion of alignment, requiring no separate control, effectively reducing cutter wear, improving cut quality, and adapting to the needs of on-site cutting operations for thermal pipelines.

[0026] like Figure 8As shown, in this embodiment, each rotating ring is provided with a limiting component at its end. The limiting component includes two sliding grooves opened at the end of the rotating ring. A telescopic rod is fixedly connected inside the sliding groove. One end of the two telescopic rods is fixedly connected to the same sliding plate. A sliding spring is sleeved on the circumferential surface of the telescopic rod. Two rotating blocks are fixedly connected to one end of the sliding plate. A shaft is provided between the two rotating blocks and the sliding plate. A torsion spring is sleeved on the circumferential surface of the shaft. The ends of the two rotating blocks are also fixedly connected to the same top plate.

[0027] Specifically, before the auxiliary ring is spliced ​​with the gear ring, a limiting component is set at the end of the rotating ring to limit the auxiliary ring. The sliding plate is slidably set at the end of the rotating ring, and the sliding is assisted by the sliding spring and the telescopic rod in the sliding groove. Then the top plate rotates at one end of the sliding plate. Under the action of the torsion spring, the initial position is in contact with the end of the rotating ring. During the rotation of the gear ring, the auxiliary ring rotates in a ring shape to squeeze the top plate to rotate, and the sliding plate slides to assist the auxiliary ring to rotate. At the same time, after the auxiliary ring and the gear ring have completed the cutting work and reset, the top plate resets under the action of the torsion spring force and abuts against the auxiliary ring again to perform the limiting work. The limiting component allows for positioning before the auxiliary ring and gear ring are joined. The sliding plate slides using a sliding spring and a telescopic rod. The top plate remains in contact with the end of the rotating ring under the action of a torsion spring. When the gear ring rotates to cut, the auxiliary ring rotates with the ring body, squeezing the top plate and pushing the sliding plate to slide. This does not obstruct the circular motion of the cutting operation. After the cutting is completed and the ring is reset, the top plate automatically springs back and resets under the drive of the torsion spring, re-clamping against the auxiliary ring to complete the positioning. This structure eliminates the need for manual locking operations, ensuring smooth rotation of the ring body during cutting and quickly constraining the position of the auxiliary ring after shutdown and reset, preventing the auxiliary ring from shifting or loosening. This improves the operational stability of the thermal pipeline cutting equipment and reduces the difficulty of on-site assembly and reset operations.

[0028] Working principle: First, during the cutting of the thermal tube, the built-in motor inside the gear ring is activated, driving the cutter to rotate. Then, by holding the two handles and lowering the positioning ring, the cutter first cuts into the tube. Once the positioning ring abuts against the tube, the first motor at both ends of the positioning ring is activated. The first motor drives the transmission chain inside the rotating rod, which in turn drives the rotating shaft at one end of the rotating rod to rotate. The rotation of the rotating shaft causes the rotating rings to move closer to the tube, so that both rotating rings and the positioning ring abut against the tube, thus forming a concave arc ring. During the splicing process, when the rotating rings abut against the positioning rings, the rotating rings compress the magnetic field at the end of the positioning rings. The block retracts into the positioning groove. When the rotating ring and the positioning ring are fully aligned, the magnetic block pops out under the action of the spring and inserts into the connecting groove opened inside the magnetic plate, completing the magnetic attraction with the magnetic plate. The gear ring is then spliced ​​with the two auxiliary rings. After the splicing is completed, the second motor on the surface of the positioning ring and the rotating ring is started. The second motor drives the transmission belt to drive the transmission shaft to rotate, which in turn drives the fixed gear to rotate. The gear inside the positioning ring and the rotating ring drives the spliced ​​gear ring to rotate, which in turn drives the cutting blade to cut around the tube. Before cutting, the bottom of the tube needs to be raised to assist the cutting work of the gear ring. The magnetic splicing structure of the positioning ring and the rotating ring eliminates the need to fit the entire device onto the pipe end. The ring assembly can be completed directly at the pipe cutting position, adapting to pipe mid-section cutting conditions and reducing on-site installation difficulty. When the positioning ring and the rotating ring are connected, they automatically engage magnetically with the magnetic block and spring, making assembly convenient and reliable and improving equipment positioning efficiency. The gear ring is driven by a second motor to rotate around the pipe, driving the cutter to continuously cut along the pipe circumference. The cutting trajectory is regular, ensuring a clean cut. Before operation, the bottom of the pipe is raised to provide space for the cutter to enter. With the gear ring feeding around the pipe, interference from the pipe wall is avoided. The entire mechanism is easy to assemble and position, reducing errors caused by manual visual alignment, improving the cutting accuracy of thermal pipelines, facilitating subsequent pipe assembly and welding, and reducing construction rework rate. Additionally, during the process of aligning the cutter below the positioning ring with the cutting point, a cutting mark line and an auxiliary mark line are drawn on the surface of the tube. The distance between the cutting mark line and the auxiliary mark line is fixed. When the positioning ring is docked, the auxiliary marks on both sides of the positioning ring are simultaneously docked with the auxiliary mark line. Since the distance between the cones set in the cutter and the auxiliary plate is the same as the distance between the cutting mark line and the auxiliary mark line, the cutter is determined to abut the cutting mark line by having the cones on both sides abut the auxiliary mark line. After the cones abut the auxiliary mark line, the cones are squeezed into the connecting cavity inside the auxiliary plate, so that the positioning hole on the side of the cone is aligned with the auxiliary hole on the side of the auxiliary plate, thereby connecting the limiting hole, auxiliary hole, positioning hole in the storage tank and the connecting hole in the positioning plate. Then, driven by the pressure pump inside the storage tank, the cutting fluid stored inside is pressurized and enters the positioning ring, and then sprays out from the spray hole on the inner wall of the positioning ring, assisting the cutter to perform the cutting work. By utilizing the fixed-interval cutting marking lines and auxiliary marking lines on the pipe body, and cooperating with the cones on both sides of the positioning ring to complete the alignment, and by relying on the fixed distance relationship between the cones and the cutter, simply placing the cones against the auxiliary marking lines can indirectly ensure that the cutter is accurately aligned with the cutting marking lines. This eliminates the traditional method of relying on manual visual observation of the cutter alignment below, significantly improving alignment accuracy. After the cones are squeezed and retracted, the channels can automatically align, connecting the cutting fluid delivery path. Under the action of the pressure pump, the cutting fluid is sprayed out from the spray holes on the inner wall of the positioning ring, continuously cooling and lubricating the cutting position. This alignment and fluid supply linkage structure makes the alignment operation simple and intuitive, reducing human judgment errors. The cutting fluid supply is automatically turned on after alignment is completed, without the need for separate control, effectively reducing cutter wear, improving cut quality, and adapting to the needs of on-site cutting operations for thermal pipelines. Furthermore, before the auxiliary ring is spliced ​​with the gear ring, a limiting component is set at the end of the rotating ring to limit the auxiliary ring. The sliding plate is slidably set at the end of the rotating ring, and the sliding is assisted by the sliding spring and the telescopic rod in the sliding groove. Then the top plate rotates at one end of the sliding plate. Under the action of the torsion spring, the initial position is in contact with the end of the rotating ring. During the rotation of the gear ring, the auxiliary ring rotates in a ring shape to squeeze the top plate to rotate, and the sliding plate slides to assist the auxiliary ring in rotating. At the same time, after the auxiliary ring and the gear ring have completed the cutting work and reset, the top plate is reset under the action of the torsion spring force and abuts against the auxiliary ring again to perform the limiting work. The limiting component allows for positioning before the auxiliary ring and gear ring are joined. The sliding plate slides using a sliding spring and a telescopic rod. The top plate remains in contact with the end of the rotating ring under the action of a torsion spring. When the gear ring rotates to cut, the auxiliary ring rotates with the ring body, squeezing the top plate and pushing the sliding plate to slide. This does not obstruct the circular motion of the cutting operation. After the cutting is completed and the ring is reset, the top plate automatically springs back and resets under the drive of the torsion spring, re-clamping against the auxiliary ring to complete the positioning. This structure eliminates the need for manual locking operations, ensuring smooth rotation of the ring body during cutting and quickly constraining the position of the auxiliary ring after shutdown and reset, preventing the auxiliary ring from shifting or loosening. This improves the operational stability of the thermal pipeline cutting equipment and reduces the difficulty of on-site assembly and reset operations.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable auxiliary device for a thermal pipeline, comprising a positioning ring (2), wherein a gear ring (212) is slidably disposed on the lower surface of the positioning ring (2), and a cutter (22) is disposed below the gear ring (212), characterized in that: The positioning ring (2) has a semi-circular cross section. Both ends of the positioning ring (2) are provided with adjustment components. The adjustment components include two sets of rotating rods (25) fixed to both ends of the positioning ring (2). A first motor (24) is fixed to one side of the rotating rod (25). A rotating shaft (26) is rotatably connected to one end of the rotating rod (25). A rotating ring (21) is fixed to the circumferential surface of the rotating shaft (26). An auxiliary ring (214) is provided inside the rotating ring (21). The two auxiliary rings (214) and the gear ring (212) can be spliced ​​together. The spliced ​​positioning ring (2) and the rotating ring (21) are sleeved on the circumferential surface of the tube body (1). Auxiliary components are provided on both sides of the positioning ring (2). The auxiliary components include a storage box (34) on the positioning side. The storage box (34) stores cutting fluid, which is used to assist the cutter (22) in cutting.

2. The portable auxiliary device for thermal pipelines according to claim 1, characterized in that: The adjustment assembly also includes a rotating cavity (213) inside the positioning ring (2). The outer walls of the positioning ring (2) and the rotating ring (21) are both fixed with a fixing plate (27). The upper surface of the fixing plate (27) is fixed with a second motor (28). The output end of the second motor (28) is connected to a transmission belt (29). One end of the transmission belt (29) is connected to a transmission shaft (210). One end of the transmission shaft (210) is fixed with a fixed gear (211). The fixed gear (211) meshes with a gear ring (212) and an auxiliary ring (214).

3. The portable auxiliary device for thermal pipelines according to claim 2, characterized in that: The inner wall of the rotating cavity (213) is provided with a rotating groove (215). Both sides of the gear ring (212) are fixed with arc-shaped strips (216), and both sides of the auxiliary ring (214) are also fixed with arc-shaped strips (216), which are used to limit the gear ring (212) and the auxiliary ring (214).

4. A portable auxiliary device for thermal pipelines according to claim 3, characterized in that: Both ends of the gear ring (212) are provided with splicing parts. The splicing parts include positioning grooves (217) opened inside the gear ring (212). A spring (218) is fixed to the top wall of the positioning groove (217). A magnetic block (219) is fixed to the bottom end of the spring (218). A magnetic plate (220) is fixed to one end of the auxiliary ring (214). A connecting groove (221) is opened inside the magnetic plate (220). The cross section of the connecting groove (221) is adapted to the end of the magnetic block (219).

5. A portable auxiliary device for thermal pipelines according to claim 1, characterized in that: The auxiliary component also includes a fixed tube (3) fixed to both sides of the positioning ring (2). A handle (31) is fixed to the top of the fixed tube (3). A positioning plate (32) is provided on the side of the fixed tube (3). An auxiliary plate (33) is fixed to one side of the positioning plate (32). A connecting cavity (35) is opened in the auxiliary plate (33). A connecting spring (36) is fixed to the top wall of the connecting cavity (35). A cone block (37) is fixed to the bottom end of the connecting spring (36). The cone block (37) abuts against the auxiliary marking line. The distance between the auxiliary marking line and the cutting marking line is fixed. The cone block (37) abuts against the auxiliary marking line to assist the cutter (22) in abutting the cutting point.

6. A portable auxiliary device for thermal pipelines according to claim 5, characterized in that: One side of the auxiliary plate (33) is fixed to the storage box (34). An auxiliary hole (39) is provided on one side of the auxiliary plate (33). A limit hole (310) is provided in the storage box (34). The auxiliary hole (39) is aligned with the limit hole (310). A positioning hole (38) is provided on the surface of the cone (37). A connecting hole (311) is provided inside the auxiliary plate (33). After the cone (37) is retracted into the connecting cavity (35), the positioning hole (38) is aligned with the auxiliary hole (39). A number of spray holes (23) are provided on the inner wall of the positioning ring (2). The number of spray holes (23) are connected to the connecting hole (311).

7. A portable auxiliary device for thermal pipelines according to claim 1, characterized in that: Each of the rotating rings (21) is provided with a limiting component at its end. The limiting component includes two sliding grooves (41) opened at the end of the rotating ring (21). A telescopic rod (43) is fixedly connected inside the sliding groove (41). One end of the two telescopic rods (43) is fixedly connected to the same sliding plate (4). A sliding spring (42) is sleeved on the circumferential surface of the telescopic rod (43). Two rotating blocks (44) are fixedly connected to one end of the sliding plate (4). A shaft is provided between the two rotating blocks (44) and the sliding plate (4), and a torsion spring (45) is sleeved on the circumferential surface of the shaft. The ends of the two rotating blocks (44) are also fixedly connected to the same top plate (46).

8. A portable auxiliary device for thermal pipelines according to claim 4, characterized in that: When cutting the heat pipe (1), first start the built-in motor inside the gear ring (212) to drive the cutter (22) to rotate. Then, by holding the two handles (31) and lowering the positioning ring (2), the cutter (22) will first cut into the pipe (1). When the positioning ring (2) abuts against the pipe (1), start the first motor (24) at both ends of the positioning ring (2). The first motor (24) drives the transmission chain inside the rotating rod (25), and then drives the rotating shaft (26) at one end of the rotating rod (25) to rotate. The rotation of the rotating shaft (26) drives the rotating ring (21) to approach the pipe (1), so that both rotating rings (21) and the positioning ring (2) abut against the pipe (1), thus splicing them into a concave arc ring. During the splicing process, when the rotating ring (21) abuts against the positioning ring (2), the rotating ring (21) squeezes the magnetic block (219) at the end of the positioning ring (2), so that the magnetic block (219) 19) Retract into the positioning groove (217). When the rotating ring (21) and the positioning ring (2) are fully connected, the magnetic block (219) is ejected by the force of the spring (218) and inserted into the connecting groove (221) opened inside the magnetic plate (220). It magnetically attracts the magnetic plate (220) and splices the gear ring (212) with the two auxiliary rings (214). After splicing, the second motor (28) on the surface of the positioning ring (2) and the rotating ring (21) is started. The second motor (28) drives the transmission belt (29) to drive the transmission shaft (210) to rotate, which in turn drives the fixed gear (211) to rotate. The gear in the positioning ring (2) and the rotating ring (21) drives the spliced ​​gear ring (212) to rotate, which in turn drives the cutting blade to cut around the tube body (1). Before cutting, the bottom of the tube body (1) needs to be suspended to assist the cutting work of the gear ring (212).

9. A portable auxiliary device for thermal pipelines according to claim 6, characterized in that: In addition, during the process of aligning the cutter (22) below the positioning ring (2) with the cutting point, a cutting mark line and an auxiliary mark line are drawn on the surface of the tube body (1). The distance between the cutting mark line and the auxiliary mark line is fixed. When the positioning ring (2) is docked, the auxiliary marks on both sides of the positioning ring (2) are simultaneously docked with the auxiliary mark line. Since the distance between the cones (37) set in the cutter (22) and the auxiliary plate (33) is the same as the distance between the cutting mark line and the auxiliary mark line, the cutter (22) is determined to abut the cutting mark line by making the cones (37) on both sides abut the auxiliary mark line. After the cones (37) abut the auxiliary mark line, the cones... The block (37) is squeezed into the internal connecting cavity (35) of the auxiliary plate (33), so that the positioning hole (38) on the side of the cone block (37) is aligned with the auxiliary hole (39) on the side of the auxiliary plate (33), thereby connecting the limiting hole (310), auxiliary hole (39), positioning hole (38) in the storage box (34) and the connecting hole (311) in the positioning plate (32). Then, driven by the pressure pump built into the storage box (34), the cutting fluid stored inside is pressurized and enters the positioning ring (2), and then sprays out from the spray hole (23) on the inner wall of the positioning ring (2), assisting the cutter (22) to perform cutting work.

10. A portable auxiliary device for a thermal pipeline according to claim 7, characterized in that: Before the auxiliary ring (214) is spliced ​​with the gear ring (212), the auxiliary ring (214) is limited by setting a limiting component at the end of the rotating ring (21). The sliding plate (4) is slidably set at the end of the rotating ring (21). The sliding spring (42) in the sliding groove (41) and the telescopic rod (43) assist in sliding. Then the top plate (46) rotates at one end of the sliding plate (4). Under the action of the torsion spring (45), the initial position is in contact with the end of the rotating ring (21). During the rotation of the gear ring (212), the auxiliary ring (214) rotates in a ring and squeezes the top plate (46) to rotate. The sliding plate (4) slides and moves to assist the auxiliary ring (214) in rotating. At the same time, after the auxiliary ring (214) and the gear ring (212) have completed the cutting work and reset, the top plate (46) is reset under the action of the torsion spring (45) and abuts against the auxiliary ring (214) again to perform the limiting work.

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