Pipe cutting device and cutting method for laying thermal pipeline

Abstract

The invention relates to the technical field of thermal pipeline laying, and in particular to a pipe cutting device for thermal pipeline laying and a cutting method thereof, comprising a ring rail assembly and a rail car, wherein the ring rail assembly is arranged on the outer wall of the thermal pipeline, and the rail car moves along the ring rail assembly; the device also comprises a connecting seat, a cutter body, a bamboo tube, two nozzles and a push rod, wherein the connecting seat is installed on the rail car, the cutter body is rotatably installed on the connecting seat, the output end of the cutter body is connected to the input end of the bamboo tube, two nozzles are installed on the output end of the bamboo tube, the two nozzles are parallel, one end of the push rod is connected to the input end of the bamboo tube, and the other end of the push rod is connected to the output end of the bamboo tube; the device cuts the metal pipe wall from the inside to the outside, reduces splashes adhering to the inner wall of the metal pipe, and has good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of thermal pipeline laying, and in particular to a pipeline cutting device and a cutting method for thermal pipeline laying. Background Art

[0002] When laying thermal pipelines, cutting is usually required, and cutting equipment is needed for cutting. The Chinese invention patent application with the prior art publication number CN116422964A proposes a pipeline cutting tool for a thermal station. When the cutting equipment needs to cut the pipeline, the cutting device is aligned with the cutting position on the pipeline. After starting the cutting device and the driving component, the cutting device cuts the pipeline, and the driving component drives the cutting device to move on the pipeline along the direction of the guide track, so that the pipeline cutting process can be completed.

[0003] However, the above-mentioned existing cutting equipment cuts the thermal pipe from the outside to the inside, causing a large amount of sparks and iron oxide generated during cutting to splash onto the inner wall of the thermal pipe. The high-temperature sparks and iron oxide will adhere to the inner wall of the thermal pipe. The attachments will affect the flow of the medium in the pipe and will also cause rust to pollute the medium, so improvement is needed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a pipe cutting device and a cutting method for laying thermal pipes, which can cut the metal pipe wall from the inside to the outside to reduce splashes adhering to the inner wall of the metal pipe and have good practicality.

[0005] The invention provides a pipe cutting device for laying a thermal pipeline, comprising a ring rail assembly and a rail car, wherein the ring rail assembly is arranged on the outer wall of the thermal pipeline, and the rail car moves along the ring rail assembly; the device also comprises a connecting seat, a cutter body, a bamboo tube, two nozzles and a push rod, wherein the connecting seat is installed on the rail car, and the cutter body is rotatably installed on the connecting seat, wherein the output end of the cutter body is connected with the input end of the bamboo tube, and two nozzles are installed on the output end of the bamboo tube, and the two nozzles are parallel, one end of the push rod is connected with the input end of the bamboo tube, and the other end of the push rod is connected with the output end of the bamboo tube; when working, the ring rail assembly is sleeved on the outer wall of the thermal pipeline, the position of the connecting seat is adjusted so that the two nozzles are close to the outer wall of the inner metal pipe of the thermal pipeline, the cutter body is rotated so that the two nozzles are arranged along the axis of the thermal pipeline, the rail car moves a certain angle along the ring rail assembly so that the two nozzles cut two arc-shaped seams on the metal pipe of the thermal pipeline, and the rotation of the cutter body drives the two nozzles to rotate so that the two nozzles The head sprays flame or emits laser to cut the ends of the two arc-shaped seams in an arc shape, thereby opening a slot-shaped hole on the metal pipe of the thermal pipeline, the material block is taken out and placed, the cutter body is rotated to make the two nozzles rotate to be perpendicular to the axial direction of the thermal pipeline, the position of the connecting seat is adjusted again, so that the two nozzles extend into the metal pipe of the thermal pipeline through the slot-shaped hole, the cutter body is rotated again to make the two nozzles arranged along the axis of the thermal pipeline, the push rod is contracted to bend the bamboo tube, so that the nozzles of the two nozzles face the inner wall of the metal pipe of the thermal pipeline, the two nozzles spray flame or emit laser to cut the metal pipe wall from the inside of the metal pipe of the thermal pipeline to the outside, the rail car goes around the thermal pipeline along the ring rail assembly, thereby completely cutting the thermal pipeline, and the sparks or oxides generated during the cutting process splash to the outside of the thermal pipeline, reducing the splashes attached to the inner wall of the metal pipe, reducing the influence of the attachments on the flow and quality of the medium in the pipeline, and having good practicality.

[0006] Preferably, it also includes a ring gear, a driving motor and a gear, the ring gear is concentrically arranged on the outer wall of the cutter body, the driving motor is installed on the connecting seat, the gear is concentrically installed on the output shaft of the driving motor, and the gear is meshed with the ring gear; the driving motor drives the gear to rotate, and the gear meshes with the ring gear to drive the cutter body to rotate, thereby realizing the adjustment of the angle of the two nozzles, which has good practicality.

[0007] Preferably, it also includes multiple support rods and multiple refractory cloth bags, the multiple support rods are circumferentially arranged outside the output end of the bamboo tube, the multiple support rods are rotatably connected to the outer wall of the output end of the bamboo tube, and the multiple refractory cloth bags are arranged between the multiple support rods; when the two nozzles are outside the thermal pipe, the multiple support rods are folded close to the outer wall of the bamboo tube, so that the multiple refractory cloth bags are stored, and when the two nozzles turn in the metal tube of the thermal pipe and face the inner wall, the multiple support rods are opened to unfold the multiple refractory cloth bags, so that the multiple refractory cloth bags can catch the sparks or iron oxide rebounded from the inner wall of the metal tube, thereby further reducing the adhesion of splashes on the inner wall of the metal tube of the thermal pipe.

[0008] Preferably, it also includes a tool holder, a special-shaped blade, a vibrator and a heater. The tool holder is installed on the rail car, the special-shaped blade is installed on the tool holder, the special-shaped blade is an isosceles trapezoidal shape, the vibrator is installed on the tool holder, the heater is installed on the tool holder, and the heater heats the special-shaped blade; before cutting the internal metal pipe of the thermal pipeline, the external insulation layer needs to be cut, the connecting seat is removed from the rail car, and the tool holder is installed on the refractory cloth bag. The vibrator is started to vibrate the special-shaped blade at a high frequency through the tool holder, and the position of the special-shaped blade is adjusted so that the special-shaped blade cuts into the insulation layer and contacts the outer wall of the metal pipe. The rail car moves around the ring track assembly so that the special-shaped blade performs a circular cutting on the insulation layer, thereby peeling off the entire insulation layer. The insulation layer can be reused after the pipelines are connected, which has good practicality.

[0009] Preferably, the ring rail assembly includes two semicircular rails, ear plates, bolts, multiple screws and multiple pressure plates. The two semicircular rails are relatively buckled to form a circular ring shape. Tracks are set on the inner and outer walls of the two semicircular rails. Ear plates are set on both sides of the two semicircular rails. Two bolts lock the four ear plates respectively. Multiple screws are respectively rotated and screwed on the two semicircular rails. The inner ends of the multiple screws are rotated to install the pressure plates; the two semicircular rails are buckled and sleeved on the outside of the thermal pipe, and the multiple screws are rotated so that the multiple screws press the multiple pressure plates on the outer wall of the thermal pipe, and the two semicircular rails can be adjusted to be concentric with the thermal pipe. The structure is simple and practical.

[0010] Preferably, the rail car includes a slide, two driven wheels, a driving wheel, a slider with a slot and a push rod 2. The driven wheels are rotatably installed on both sides of the middle part of the slide, and the driving wheel is rotatably installed on the inner end of the slide. The two driven wheels roll along the outer tracks of the two semicircular rails, and the driving wheel rolls along the inner tracks of the two semicircular rails. The slider with a slot is slidably installed in the slide groove of the end face of the slide away from the semicircular rail, and the fixed end of the push rod 2 is installed on the outer end of the slide, and the piston rod of the push rod 2 is connected to the slider with a slot; the slide is rotatably installed on the two semicircular rails through the driving wheel and the two driven wheels, and the connecting seat is detachably installed on the slider with a slot. The piston rod of the push rod 2 is telescopic to drive the slider with a slot to move along the slide groove of the slide, thereby adjusting the distance between the two nozzles and the thermal pipeline, and the driving wheel rotates to drive the slide to move along the track of the two semicircular rails, which has good practicality.

[0011] Preferably, it also includes two plug plates and two latches. Positioning holes are set on the slider with slots. The two plug plates are detachably inserted into the slider with slots. The two latches pass through the two plug plates and are inserted into the positioning holes of the slider with slots respectively. The end of the connecting seat is installed on one plug plate, and the end of the tool holder is installed on the other plug plate. When working, the plug plate is inserted into the slider with slots, and the latch is used to pass through the plug plate and insert it into the positioning holes of the slider with slots, so that the plug plate can be quickly installed on the slider with slots, which is convenient for quick installation and replacement of two nozzles or special-shaped blades. The operation is convenient and the practicability is good.

[0012] A method for cutting a pipe for laying a thermal pipeline according to the present invention comprises:

[0013] S1, surround and sleeve two semicircular rails on the outside of the thermal pipeline, insert the plug plate with a special-shaped blade into the slider with a slot, operate the push rod 2 to make the special-shaped blade cut the outer insulation layer of the thermal pipeline, and the rail car rotates around the two semicircular rails for one circle, so that the special-shaped blade cuts the entire insulation layer;

[0014] S2, remove the plug plate with the special-shaped blade, insert the plug plate with the nozzle into the slider with the slot, operate the second push rod close to the outer wall of the inner metal pipe of the thermal pipeline, and operate the two nozzles to cut the metal pipe into a slot-shaped hole;

[0015] S3. Operate push rod 2 to extend the two nozzles into the interior of the metal pipe. Operate the push rod to contract and bend the bamboo tube so that the two nozzles face the inner wall of the metal pipe. Operate the two nozzles to cut from the inside to the outside. The rail car rotates around the two semicircular rails for one circle so that the two nozzles completely cut the thermal pipe.

[0016] Preferably, when S1 is cutting the insulation layer, the vibrator is turned on, the vibrator vibrates at a high frequency, and the special-shaped blade is driven to vibrate at a high frequency with a small amplitude through the blade holder.

[0017] Preferably, after the two nozzles extend into the interior of the metal tube, a plurality of support rods are stretched out to open a plurality of refractory cloth bags, and the plurality of refractory cloth bags are used to receive splashes reflected from the inner wall of the metal tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects: two nozzles spray flames or emit lasers from the inside of the metal pipe of the thermal pipe to the outside to cut the metal pipe wall, and sparks or oxides generated during the cutting process splash to the outside of the thermal pipe, reducing the splashes adhering to the inner wall of the metal pipe, reducing the influence of the attachments on the flow and quality of the medium in the pipe, and having good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the state of slotted holes in the internal metal tube of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the state of cutting the external insulation layer of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the ring rail assembly, rail car, connecting seat, cutter body, bamboo tube, nozzle, push rod and gear ring;

[0022] Figure 4 It is a schematic diagram of the structure of the ring rail assembly, rail car, tool holder, special-shaped blade and vibrator;

[0023] Figure 5 It is a schematic diagram of the structure of the ring rail assembly and the rail car;

[0024] Figure 6 It is a schematic diagram of the structure of the rail car;

[0025] Figure 7 It is a structural schematic diagram of the nozzle of the present invention in a straightened state;

[0026] Figure 8 It is a schematic structural diagram of the nozzle of the present invention in a bent state;

[0027] Fig. 9 It is a schematic diagram of the structure of the tool holder, special-shaped blade and vibrator.

[0028] Markings in the attached drawings: 1. Ring rail assembly; 2. Rail car; 3. Connecting seat; 4. Cutter body; 5. Bamboo tube; 6. Nozzle; 7. Push rod; 8. Gear ring; 9. Driving motor; 10. Gear; 11. Strut; 12. Refractory cloth bag; 13. Tool holder; 14. Special-shaped blade; 15. Vibrator; 16. Semicircular rail; 17. Ear plate; 18. Bolt; 19. Screw; 20. Press plate; 21. Slide; 22. Driven wheel; 23. Driving wheel; 24. Slider with slot; 25. Push rod 2; 26. Insert plate; 27. Heater; 28. Latch. DETAILED DESCRIPTION

[0029] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0030] Embodiment 1, as Figure 1 , Figure 3 , Figures 5 to 8 As shown, a pipe cutting device for laying a thermal pipeline comprises a ring rail assembly 1 and a rail car 2, wherein the ring rail assembly 1 is arranged on the outer wall of the thermal pipeline, and the rail car 2 moves along the ring rail assembly 1; it also comprises a connecting seat 3, a cutter body 4, a bamboo tube 5, two nozzles 6 and a push rod 7, wherein the connecting seat 3 is mounted on the rail car 2, the cutter body 4 is rotatably mounted on the connecting seat 3, the output end of the cutter body 4 is connected to the input end of the bamboo tube 5, two nozzles 6 are mounted on the output end of the bamboo tube 5, and the two nozzles 6 are parallel to each other, and one end of the push rod 7 is connected to the input end of the bamboo tube 5. The other end of the push rod 7 is connected to the output end of the bamboo tube 5; it also includes a ring gear 8, a drive motor 9 and a gear 10, the ring gear 8 is concentrically arranged on the outer wall of the cutter body 4, the drive motor 9 is installed on the connecting seat 3, the output shaft of the drive motor 9 is concentrically installed with the gear 10, and the gear 10 is meshed with the ring gear 8; the ring rail assembly 1 includes two semicircular rails 16, ear plates 17, bolts 18, multiple screws 19 and multiple pressing plates 20, the two semicircular rails 16 are relatively buckled to form a circular ring shape, the inner and outer walls of the two semicircular rails 16 are provided with tracks, and the two semicircular rails 16 are Ear plates 17 are arranged on both sides, two bolts 18 respectively lock the four ear plates 17, multiple screw rods 19 are respectively rotatably screwed on the two semicircular rails 16, and the inner ends of the multiple screw rods 19 are rotatably installed with the pressure plates 20; the rail vehicle 2 includes a slide 21, two driven wheels 22, a driving wheel 23, a slider 24 with a slot and a push rod 25, the driven wheels 22 are rotatably installed on both sides of the middle of the slide 21, and the driving wheel 23 is rotatably installed on the inner end of the slide 21, and the two driven wheels 22 roll along the outer tracks of the two semicircular rails 16, and the driving wheel 23 rolls along the two semicircular rails 16 The inner track rolls, and the slider 24 with a slot is slidably installed in the slide groove of the end face of the slide 21 away from the semicircular rail 16. The fixed end of the push rod 25 is installed on the outer end of the slide 21, and the piston rod of the push rod 25 is connected to the slider 24 with a slot; it also includes two plug plates 26 and two latches 28. The slider 24 with a slot is provided with a positioning hole. The two plug plates 26 are detachably inserted in the slider 24 with a slot. The two latches 28 pass through the two plug plates 26 and are inserted in the positioning holes of the slider 24 with a slot. The end of the connecting seat 3 is installed on a push rod 25.

[0031] During operation, the two semicircular rails 16 are sleeved on the outer wall of the thermal pipe, the slide 21 is rollingly installed on the two semicircular rails 16 through the driving wheel 23 and the two driven wheels 22, the plug 26 with the bamboo tube 5 is inserted on the slider with slot 24, and the latch 28 is used to pass through the plug 26 and insert it into the positioning hole of the slider with slot 24, the plug 26 is quickly installed on the slider with slot 24, and the piston rod of the push rod 25 is extended and retracted to drive the slider with slot 24 to move along the slide groove of the slide 21, so as to adjust the two nozzles 6 and the thermal The distance between the heat pipe and the two nozzles 6 is such that the two nozzles 6 are close to the outer wall of the inner metal pipe of the heat pipe, the driving motor 9 drives the gear 10 to rotate, the gear 10 meshes with the gear ring 8 to drive the cutter body 4 to rotate, and the angle of the two nozzles 6 is adjusted. The cutter body 4 is rotated to arrange the two nozzles 6 along the axis of the heat pipe, and the rail car 2 moves a certain angle along the ring rail assembly 1, so that the two nozzles 6 cut two arc-shaped seams on the metal pipe of the heat pipe, and the rotation of the cutter body 4 drives the two nozzles 6 to rotate, so that the two nozzles 6 spray The ends of the two arc-shaped seams are cut in an arc shape by emitting flame or laser, thereby opening a slot-shaped hole on the metal pipe of the thermal pipeline, the material block is taken out and placed, the cutter body 4 is rotated to make the two nozzles 6 rotate to be perpendicular to the axial direction of the thermal pipeline, the position of the connecting seat 3 is adjusted again, so that the two nozzles 6 extend into the metal pipe of the thermal pipeline through the slot-shaped hole, the cutter body 4 is rotated again to make the two nozzles 6 arranged along the axis of the thermal pipeline, the push rod 7 contracts to bend the bamboo tube 5, so that the nozzles of the two nozzles 6 face the inner wall of the metal pipe of the thermal pipeline, the two nozzles 6 spray flame or emit laser from the inside of the metal pipe of the thermal pipeline to the outside to cut the metal pipe wall, the driving wheel 23 rotates to drive the slide 21 to move along the tracks of the two semicircular rails 16 around the thermal pipeline, thereby completely cutting the thermal pipeline, and the sparks or oxides generated during the cutting process splash to the outside of the thermal pipeline, reducing the splashes attached to the inner wall of the metal pipe, reducing the attachments on the flow and quality of the medium in the pipeline, and having good practicality.

[0032] Embodiment 2, as Figure 1 , Figure 3 , Figure 7 and Figure 8 As shown, on the basis of Example 1, it also includes multiple support rods 11 and multiple refractory cloth bags 12, the multiple support rods 11 are circumferentially arranged on the outside of the output end of the bamboo tube 5, the multiple support rods 11 are rotatably connected to the outer wall of the output end of the bamboo tube 5, and the multiple refractory cloth bags 12 are arranged between the multiple support rods 11.

[0033] When the two nozzles 6 are outside the thermal pipe, the multiple support rods 11 are folded close to the outer wall of the bamboo tube 5, so that the multiple refractory cloth bags 12 are stored. When the two nozzles 6 turn inside the metal pipe of the thermal pipe and face the inner wall, the multiple support rods 11 open to unfold the multiple refractory cloth bags 12, so that the multiple refractory cloth bags 12 catch the sparks or iron oxide rebounded from the inner wall of the metal pipe, further reducing the adhesion of splashes on the inner wall of the metal pipe of the thermal pipe.

[0034] Embodiment 3, as Figure 2 , Figure 4 and Fig. 9 As shown, based on Example 1, it also includes a tool holder 13, a special-shaped blade 14, a vibrator 15 and a heater 27. The tool holder 13 is installed on the rail car 2, the special-shaped blade 14 is installed on the tool holder 13, the special-shaped blade 14 is an isosceles trapezoidal shape, the vibrator 15 is installed on the tool holder 13, the heater 27 is installed on the tool holder 13, and the heater 27 heats the special-shaped blade 14; the end of the tool holder 13 is installed on another push rod 25.

[0035] Before cutting the inner metal pipe of the thermal pipeline, the outer insulation layer needs to be cut, the connecting seat 3 is removed from the rail car 2, the tool holder 13 is installed on the refractory cloth bag 12, and the vibrator 15 is started to vibrate the special-shaped blade 14 at a high frequency through the tool holder 13, and the position of the special-shaped blade 14 is adjusted so that the special-shaped blade 14 cuts into the insulation layer and contacts the outer wall of the metal pipe. The rail car 2 moves around the ring track assembly 1, so that the special-shaped blade 14 performs a circular cutting on the insulation layer, thereby peeling off the entire insulation layer, and the insulation layer can be reused after the pipelines are connected.

[0036] Embodiment 4: The cutting method of the thermal pipeline based on Embodiments 1, 2 and 3 is as follows:

[0037] S1, surround and sleeve the two semicircular rails 16 on the outside of the thermal pipeline, insert the push rod 25 with the special-shaped blade 14 into the slider 24 with the slot, turn on the vibrator 15, the vibrator 15 vibrates at a high frequency, drives the special-shaped blade 14 to vibrate at a small amplitude at a high frequency through the tool holder 13, operate the driven wheel 22 to make the special-shaped blade 14 cut the outer insulation layer of the thermal pipeline, and the rail car 2 rotates around the two semicircular rails 16 for one circle, so that the special-shaped blade 14 cuts the entire insulation layer;

[0038] S2, remove the push rod 25 with the special-shaped blade 14, insert the push rod 25 with the nozzle 6 into the slider 24 with the slot, operate the driven wheel 22 to approach the outer wall of the inner metal pipe of the thermal pipeline, and operate the two nozzles 6 to cut the metal pipe into a slot-shaped hole;

[0039] S3. Operate the driven wheel 22 to extend the two nozzles 6 into the interior of the metal pipe, operate the push rod 7 to contract to bend the bamboo tube 5, make the two nozzles 6 face the inner wall of the metal pipe, expand the multiple support rods 11 to open the multiple refractory cloth bags 12, operate the two nozzles 6 to cut from the inside to the outside, and the rail car 2 rotates around the two semicircular rails 16 for one circle, so that the two nozzles 6 completely cut the thermal pipe. During the cutting process, use the multiple refractory cloth bags 12 to receive the splashes reflected from the inner wall of the metal pipe.

[0040] like Figures 1 to 9 As shown, a pipe cutting device and a cutting method for laying a thermal pipeline of the present invention, when working, firstly, the ring rail assembly 1 is sleeved on the outer wall of the thermal pipeline, the position of the connecting seat 3 is adjusted, the vibrator 15 is turned on to make the special-shaped blade 14 vibrate at a high frequency, and the driven wheel 22 is operated to make the special-shaped blade 14 cut the outer insulation layer of the thermal pipeline, and the rail car 2 rotates around the two semicircular rails 16 for one circle, so that the special-shaped blade 14 cuts the entire insulation layer, and then the plug plate 26 is replaced and inserted and positioned using the plug pin 28, and the push rod 25 is operated to make the two nozzles 6 close to the outer wall of the inner metal pipe of the thermal pipeline, the driving motor 9 is driven to drive the cutter body 4 to rotate so that the two nozzles 6 are arranged along the axis of the thermal pipeline, and the rail car 2 moves a certain angle along the ring rail assembly 1 so that the two nozzles 6 cut two arc-shaped seams on the metal pipe of the thermal pipeline, and the rotating cutter body 4 drives the two nozzles 6 to rotate, so that the two nozzles 6 spray flames or emit The laser cuts the ends of the two arc-shaped seams in an arc shape, thereby opening a slot-shaped hole on the metal pipe of the thermal pipeline, the material block is taken out and placed, and then the cutter body 4 is rotated to make the two nozzles 6 rotate to be perpendicular to the axial direction of the thermal pipeline, and the push rod 25 is operated again to make the two nozzles 6 extend into the metal pipe of the thermal pipeline through the slot-shaped hole, and the cutter body 4 is rotated again to make the two nozzles 6 arranged along the axis of the thermal pipeline, and the push rod 7 contracts to bend the bamboo tube 5, so that the nozzles of the two nozzles 6 face the inner wall of the metal pipe of the thermal pipeline, and the two nozzles 6 spray flames or emit lasers from the inside of the metal pipe of the thermal pipeline to the outside to cut the metal pipe wall, and finally the rail car 2 goes around the thermal pipeline along the ring track assembly 1, thereby completely cutting the thermal pipeline, and the sparks or oxides generated during the cutting process splash to the outside of the thermal pipeline, and the splashes rebounded by the inner wall of the metal pipe are caught by multiple refractory cloth bags 12.

[0041] The main functions achieved by the present invention are:

[0042] 1. Cut the metal pipe wall from the inside to the outside to reduce the spatter adhering to the inner wall of the metal pipe and reduce the influence of the attachment on the flow and quality of the medium in the pipe;

[0043] 2. It can catch the sparks or iron oxide rebounding from the inner wall of the metal pipe, further reducing the adhesion of splashes on the inner wall of the metal pipe of the thermal pipeline;

[0044] 3. Able to completely cut the insulation layer of the outer layer of the thermal pipeline;

[0045] 4. Two cutting modules can be quickly replaced.

[0046] The pipe cutting equipment and cutting method for laying thermal pipes of the present invention are installed, connected or set in common mechanical ways, and can be implemented as long as the beneficial effects can be achieved; the ring rail assembly 1, rail car 2, cutter body 4, bamboo tube 5, nozzle 6, push rod 7, gear ring 8, drive motor 9, gear 10, support rod 11, refractory cloth bag 12, special-shaped blade 14, vibrator 15, heater 27, semicircular rail 16, bolt 18, screw 19, slider with slot 24, push rod 25, driven wheel 22, and driving wheel 23 of the pipe cutting equipment and cutting method for laying thermal pipes of the present invention are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pipe cutting device for laying a thermal pipeline, comprising a ring rail assembly (1) and a rail vehicle (2), wherein the ring rail assembly (1) is arranged around the outer wall of the thermal pipeline, and the rail vehicle (2) moves along the ring rail assembly (1); characterized in that: It also comprises a connecting seat (3), a cutter body (4), a bamboo tube (5), two nozzles (6) and a push rod (7), wherein the connecting seat (3) is mounted on the rail vehicle (2), the cutter body (4) is rotatably mounted on the connecting seat (3), the output end of the cutter body (4) is connected to the input end of the bamboo tube (5), the output end of the bamboo tube (5) is mounted with two nozzles (6), the two nozzles (6) are parallel, one end of the push rod (7) is connected to the input end of the bamboo tube (5), and the other end of the push rod (7) is connected to the output end of the bamboo tube (5); It also includes a gear ring (8), a drive motor (9) and a gear (10), wherein the gear ring (8) is coaxially arranged on the outer wall of the cutter body (4), the drive motor (9) is mounted on the connecting seat (3), the gear (10) is coaxially mounted on the output shaft of the drive motor (9), and the gear (10) is meshed with the gear ring (8); It also includes a plurality of support rods (11) and a plurality of fire-resistant cloth bags (12), wherein the plurality of support rods (11) are circumferentially arranged outside the output end of the bamboo tube (5), the plurality of support rods (11) are rotatably connected to the outer wall of the output end of the bamboo tube (5), and the plurality of fire-resistant cloth bags (12) are arranged between the plurality of support rods (11); The invention also comprises a tool holder (13), a special-shaped blade (14), a vibrator (15) and a heater (27), wherein the tool holder (13) is mounted on a rail vehicle (2), the special-shaped blade (14) is mounted on the tool holder (13), the special-shaped blade (14) is in the shape of an isosceles trapezoid, the vibrator (15) is mounted on the tool holder (13), the heater (27) is mounted on the tool holder (13), and the heater (27) heats the special-shaped blade (14).

2. A pipe cutting device for laying a thermal pipeline as claimed in claim 1, characterized in that: The ring rail assembly (1) comprises two semicircular rails (16), ear plates (17), bolts (18), a plurality of screw rods (19) and a plurality of pressure plates (20). The two semicircular rails (16) are relatively buckled to form a circular ring shape. The inner wall and the outer wall of the two semicircular rails (16) are provided with rails. The two sides of the two semicircular rails (16) are provided with ear plates (17). Two bolts (18) respectively lock the four ear plates (17). The plurality of screw rods (19) are respectively rotatably screwed on the two semicircular rails (16). The inner ends of the plurality of screw rods (19) are rotatably mounted with the pressure plates (20).

3. A pipe cutting device for laying a thermal pipeline as claimed in claim 2, characterized in that: The rail vehicle (2) comprises a slide (21), two driven wheels (22), a driving wheel (23), a slider with a slot (24) and a second push rod (25). The driven wheels (22) are rotatably mounted on both sides of the middle of the slide (21), the driving wheel (23) is rotatably mounted on the inner end of the slide (21), the two driven wheels (22) roll along the outer tracks of the two semicircular rails (16), the driving wheel (23) rolls along the inner tracks of the two semicircular rails (16), the slider with a slot (24) is slidably mounted in a slide groove on the end surface of the slide (21) away from the semicircular rail (16), the fixed end of the second push rod (25) is mounted on the outer end of the slide (21), and the piston rod of the second push rod (25) is connected to the slider with a slot (24).

4. A pipe cutting device for laying a thermal pipeline as claimed in claim 3, characterized in that: It also includes two plug plates (26) and two latches (28); a positioning hole is provided on the slider with a slot (24); the two plug plates (26) are detachably inserted into the slider with a slot (24); the two latches (28) respectively pass through the two plug plates (26) and are inserted into the positioning holes of the slider with a slot (24); the end of the connecting seat (3) is installed on one plug plate (26); and the end of the tool holder (13) is installed on the other plug plate (26).

5. The cutting method of the pipe cutting equipment for laying thermal pipelines according to claim 4, characterized in that: include: S1, two semicircular rails (16) are arranged around the outer side of the heat pipe, a plug plate (26) with a special-shaped blade (14) is inserted into a slider (24) with a slot, a driven wheel (22) is operated to make the special-shaped blade (14) cut the outer insulation layer of the heat pipe, and the rail car (2) rotates around the two semicircular rails (16) for one circle, so that the special-shaped blade (14) cuts the entire insulation layer; S2, remove the insert plate (26) with the special-shaped blade (14), insert the insert plate (26) with the nozzle (6) into the slider with the slot (24), operate the second push rod (25) close to the outer wall of the inner metal pipe of the thermal pipeline, and operate the two nozzles (6) to cut the metal pipe into a slot-shaped hole; S3, operate the second push rod (25) to extend the two nozzles (6) into the interior of the metal pipe, operate the push rod (7) to contract and bend the bamboo tube (5), so that the two nozzles (6) face the inner wall of the metal pipe, operate the two nozzles (6) to cut from the inside to the outside, and the track car (2) rotates around the two semicircular rails (16) for one circle, so that the two nozzles (6) completely cut the thermal pipe.

6. A cutting method for a pipe cutting device for laying a thermal pipeline as claimed in claim 5, characterized in that: When the insulation layer is cut in S1, the vibrator (15) is turned on, the vibrator (15) vibrates at a high frequency, and drives the special-shaped blade (14) to vibrate at a high frequency with a small amplitude through the blade holder (13).

7. The cutting method of the pipe cutting equipment for laying thermal pipelines according to claim 5, characterized in that: After the two nozzles (6) extend into the metal pipe, the plurality of support rods (11) are spread out to open the plurality of refractory cloth bags (12), and the plurality of refractory cloth bags (12) are used to receive splashes reflected from the inner wall of the metal pipe.

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