A portable anti-corrosion and thermal insulation pipe cutting device

Abstract

The present invention relates to the technical field of anti-corrosion and thermal insulation pipe cutting, and in particular, to a portable anti-corrosion and thermal insulation pipe cutting device, comprising a bracket, a spring telescopic rod and a handle, etc.; two spring telescopic rods are fixedly connected to the upper surface of the bracket; the telescopic ends of the two spring telescopic rods are commonly fixedly connected to a handle; and a driving button is provided on the handle. The present invention surrounds the outer sleeve of the anti-corrosion and thermal insulation pipe with a continuously rotating cutting blade, cuts off the part of the outer sleeve of the anti-corrosion and thermal insulation pipe that needs to be cut off, and then inserts an arc-shaped cutter into the thermal insulation layer of the anti-corrosion and thermal insulation pipe and surrounds the thermal insulation layer of the anti-corrosion and thermal insulation pipe. The blade and high temperature of the arc-shaped cutter are used to melt the thermal insulation layer of the anti-corrosion and thermal insulation pipe and quickly solidify to form a smooth cutting surface. Compared with cutting by a manual handheld angle grinder, this not only has a fast cutting speed, a smooth cutting surface, and a clean cutting process, but also will not cause damage to the working steel pipe of the anti-corrosion and thermal insulation pipe, affecting the service life of the working steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of anti-corrosion and thermal insulation pipe cutting, and in particular to a portable anti-corrosion and thermal insulation pipe cutting device. Background Art

[0002] Anti-corrosion and thermal insulation pipe fittings mainly include anti-corrosion and thermal insulation elbows, anti-corrosion and thermal insulation tees, anti-corrosion and thermal insulation elbows and anti-corrosion and thermal insulation reducers, etc. These pipe fittings are made of a high-density polyethylene outer sleeve, a polyurethane foam insulation layer and an internal working steel pipe that are tightly combined.

[0003] During the construction of current anti-corrosion and thermal insulation pipes, it is necessary to cut the thermal insulation layer on the outer wall of the anti-corrosion and thermal insulation pipes in order to connect the anti-corrosion and thermal insulation pipes. In the prior art, the outer sleeve and the thermal insulation layer of the anti-corrosion and thermal insulation pipes are gradually cut from the outside to the inside by manually holding an angle grinder. Since the cutting is performed by manually holding an angle grinder, the cutting depth of the cutting blade cannot be accurately controlled, and it is necessary to adjust the cutting depth of the cutting blade while observing, which may cause the high-speed rotating cutting blade to contact the working steel pipe of the anti-corrosion and thermal insulation pipe and cut a notch on the outer ring surface of the working steel pipe. This not only increases the workload of manual labor and reduces the cutting efficiency, but also reduces the service life of the working steel pipe, affecting the quality of the anti-corrosion and thermal insulation pipes. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem that the cutting depth of the cutting blade cannot be accurately controlled due to manual cutting with a hand-held angle grinder, and the cutting depth of the cutting blade needs to be adjusted while observing, so that the high-speed rotating cutting blade will contact the working steel pipe of the anti-corrosion and thermal insulation pipe, and cut a notch on the outer ring surface of the working steel pipe. This not only increases the manual workload and low cutting efficiency, but also leads to a decrease in the service life of the working steel pipe, affecting the quality of the anti-corrosion and thermal insulation pipe. A cutting device is provided, which can quickly cut the outer sleeve and insulation layer of the anti-corrosion and thermal insulation pipe without damaging the working steel pipe of the anti-corrosion and thermal insulation pipe, and at the same time, it is also easy to carry manually.

[0005] Another object of the present invention is to provide a portable anti-corrosion and thermal insulation pipe cutting device with the above functions.

[0006] The present invention is achieved through the following technical scheme: a portable anti-corrosion and thermal insulation pipe cutting device, comprising a bracket, a spring telescopic rod and a handle; two spring telescopic rods are fixedly connected to the upper surface of the bracket; the telescopic ends of the two spring telescopic rods are commonly fixedly connected to the handle; a driving button is arranged on the handle; it also includes an electric rotating shaft, an arc-shaped splint, a limiting roller 1, an H-shaped splint, a limiting roller 2, a cutting unit and a cutting unit; two electric rotating shafts are respectively installed on the left and right parts of the bracket; the rotating parts of the two electric rotating shafts on the same side are respectively fixedly connected to an arc-shaped splint and an H-shaped splint; a limiting roller 1 is arranged on the inner arc surface of each arc-shaped splint; a limiting roller 2 is arranged on each H-shaped splint; the bracket and the handle are commonly connected to a cutting unit for cutting the anti-corrosion and thermal insulation pipe; the cutting unit is connected to a cutting unit for cutting the thermal insulation layer.

[0007] Furthermore, the cutting unit includes a cover shell, a protective cover, a sealing plate, a U-shaped plate, a limit cover, a motor, a connecting shaft and a cutting blade; the lower part of the handle is fixedly connected to the cover shell; the front part of the cover shell is connected to the protective cover; the front part of the protective cover is detachably connected to the sealing plate; the upper surface of the bracket is fixedly connected to the U-shaped plate, and the U-shaped plate is located between two spring telescopic rods; the front part of the U-shaped plate is detachably connected to the limit cover; the lower part of the limit cover is an arc surface; the limit cover is located below the protective cover; the motor is fixedly connected in the cover shell; the output shaft of the motor is fixedly connected to the connecting shaft; the front part of the connecting shaft is detachably connected to the cutting blade, and the cutting blade is located in the protective cover, and the cutting blade is opposite to the limit cover.

[0008] Furthermore, the cutting unit also includes a folded cloth; the folded cloth is arranged between the protective cover and the U-shaped plate.

[0009] Furthermore, the cutting unit includes an arc-shaped partition, a limit block, an arc-shaped cutting knife, a connecting block, a pressing block and a contact block; the inner wall of the protective cover is fixedly connected with the arc-shaped partition; the outer arc surface of the arc-shaped partition is fixedly connected with the limit block; a temperature sensor is arranged inside the limit block; the arc-shaped cutting knife is slidably connected inside the limit block; a heating wire is arranged on the arc-shaped cutting knife; the upper part of the arc-shaped cutting knife is fixedly connected with a connecting block; a sliding groove is provided on the protective cover; a pressing block is slidably provided in the sliding groove; the pressing block is slidably connected to the connecting block, and a spring is arranged between the connecting block and the pressing block; a contact block is arranged on the pressing block, and the contact block contacts the inner wall of the protective cover; an avoidance hole is provided at the lower left part of the protective cover; an indicator light is arranged on the protective cover.

[0010] Furthermore, a non-slip rubber layer is provided at the contact portion between the contact block and the inner wall of the protective cover.

[0011] Furthermore, the lower part of the arc-shaped cutting knife is semicircular, and the lower part and the inner arc surface of the arc-shaped cutting knife are provided with blades.

[0012] Furthermore, it also includes a fixed block and a scraper; two fixed blocks are fixedly connected to the lower surface of the protective cover, and the two fixed blocks are respectively located at the front and rear sides of the avoidance hole in the lower left part of the protective cover; each fixed block is rotatably connected to a scraper through a torsion spring, and the two scrapers are fitted to each other.

[0013] Furthermore, a supporting portion is disposed on the outer curved surface of each arc-shaped clamping plate.

[0014] Furthermore, it also includes a receiving frame, rollers and support bars; the receiving frame is provided with a groove; two rollers are rotatably connected in the groove; and a support bar is respectively provided at the lower left and lower right parts of the receiving frame.

[0015] Furthermore, each support bar is provided with a limiting groove.

[0016] The beneficial effects are:

[0017] The portable anti-corrosion and thermal insulation pipe cutting device obtained by the above design of the present invention surrounds the outer sleeve of the anti-corrosion and thermal insulation pipe with a continuously rotating cutting blade, cuts off the part of the outer sleeve of the anti-corrosion and thermal insulation pipe that needs to be cut off, and then inserts the arc-shaped cutting knife into the insulation layer of the anti-corrosion and thermal insulation pipe and surrounds the insulation layer of the anti-corrosion and thermal insulation pipe. The blade of the arc-shaped cutting knife and the high temperature are used to melt the insulation layer of the anti-corrosion and thermal insulation pipe and quickly solidify it to form a smooth cutting surface. Compared with cutting by manual hand-held angle grinder, this method not only has a fast cutting speed, a smooth cutting surface, and a clean cutting process, but also will not cause damage to the working steel pipe of the anti-corrosion and thermal insulation pipe, thereby affecting the service life of the working steel pipe. In addition, the insulation layer of the anti-corrosion and thermal insulation pipe is cut by the high-temperature arc-shaped cutting knife, which will not generate a large amount of dust, thereby avoiding the operator from absorbing a large amount of dust during the cutting process, thereby endangering the health of the operator.

[0018] The portable anti-corrosion and thermal insulation pipe cutting device obtained by the present invention through the above design scrapes off the solid thermal insulation layer debris attached to the arc-shaped cutting knife through two scrapers, thereby avoiding a large amount of thermal insulation layer debris attached to the arc-shaped cutting knife, which affects the subsequent cutting effect.

[0019] The portable anti-corrosion and thermal insulation pipe cutting device obtained by the above design of the present invention flips the receiving frame, turns the rollers on the receiving frame downward, and places the device horizontally between the two support bars and embeds them into the two limit grooves. In this way, the operator can carry a set of receiving frames and rollers when lifting the device with one hand, and only needs to hold a set of receiving frames and rollers with the other hand. This meets the necessary support for the anti-corrosion and thermal insulation pipe to be suspended in the air, and the operator does not need to go back and forth many times to take the supporting components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] In the attached picture:

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0023] Figure 2 It is a schematic diagram of the combined three-dimensional structure of the bracket, spring telescopic rod, handle and cutting unit of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the cutting unit of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0025] Figure 4 It is a schematic diagram of the combined three-dimensional structure of the cutting unit and the cutting unit of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0026] Figure 5 It is a schematic diagram of a combined partial three-dimensional structure of a cutting unit, a cutting unit, a fixing block and a scraper of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0027] Figure 6 It is a schematic diagram of the combined three-dimensional structure of the receiving frame, rollers and support bars of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0028] Figure 7 This is a working state diagram of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention;

[0029] Figure 8 This is a diagram of the portable state of the portable anti-corrosion and thermal insulation pipe cutting device of the present invention.

[0030] In the accompanying drawings: 1- bracket, 2- spring telescopic rod, 3- handle, 4- electric shaft, 5- arc clamp, 6- limiting roller 1, 7- H-shaped clamp, 8- limiting roller 2, 9- anti-corrosion insulation pipe,

[0031] 101- housing, 102- protective cover, 103- sealing plate, 104- U-shaped plate, 105- limiting cover, 106- motor, 107- connecting shaft, 108- cutting disc, 109- folding cloth,

[0032] 201-arc partition, 202-limiting block, 203-arc cutting knife, 204-connecting block, 205-pressing block, 206-contact block,

[0033] 301-fixed block, 302-scraper,

[0034] 401-support frame, 402-roller, 403-support bar,

[0035] 3001-driving button, 5001-support part, 10201-slide groove, 10202-avoidance hole, 10203-indicator light, 40101-groove, 40301-limiting groove. DETAILED DESCRIPTION

[0036] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the following figures, in order to make each layer and each component a recognizable size, the scale of each layer and each component is appropriately changed for schematic illustration. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0037] Example 1

[0038] A portable anti-corrosion and thermal insulation pipe cutting device, such as Figure 1-Figure 7 As shown, it includes a bracket 1, a spring telescopic rod 2 and a handle 3; two spring telescopic rods 2 are fixedly connected to the upper surface of the bracket 1; the telescopic ends of the two spring telescopic rods 2 are commonly fixedly connected to the handle 3; and a driving button 3001 is provided on the handle 3;

[0039] It also includes an electric rotating shaft 4, an arc-shaped clamping plate 5, a limiting roller 1 6, an H-shaped clamping plate 7, a limiting roller 2 8, a cutting unit and a shearing unit; two electric rotating shafts 4 are respectively installed on the left and right parts of the bracket 1; the rotating parts of the two electric rotating shafts 4 on the same side are respectively fixed with an arc-shaped clamping plate 5 and an H-shaped clamping plate 7; a limiting roller 1 6 is arranged on the inner arc surface of each arc-shaped clamping plate 5; a limiting roller 2 8 is arranged on each H-shaped clamping plate 7; the bracket 1 and the handle 3 are jointly connected to the cutting unit; and the cutting unit is connected to the shearing unit.

[0040] The cutting unit includes a cover 101, a protective cover 102, a sealing plate 103, a U-shaped plate 104, a limit cover 105, a motor 106, a connecting shaft 107 and a cutting blade 108; the lower part of the handle 3 is fixedly connected to the cover 101; the front part of the cover 101 is connected to the protective cover 102; the front part of the protective cover 102 is detachably connected to the sealing plate 103; the upper surface of the bracket 1 is fixedly connected to the U-shaped plate 104, and the U-shaped plate 104 is located between the two spring telescopic rods 2 The U-shaped plate 104 is detachably connected to a limit cover 105 at the front; the limit cover 105 has an arc surface at the bottom; the limit cover 105 is located below the protective cover 102; a motor 106 is bolted inside the cover 101; the output shaft of the motor 106 is fixedly connected to a connecting shaft 107; a cutting blade 108 is detachably connected to the front of the connecting shaft 107, and the cutting blade 108 is located inside the protective cover 102, and the cutting blade 108 is directly opposite to the limit cover 105.

[0041] The cutting unit also includes a folding cloth 109; a folding cloth 109 is arranged between the protective cover 102 and the U-shaped plate 104, and the folding cloth 109 prevents the debris generated during the cutting process from splashing onto the U-shaped plate 104, thereby affecting the handle 3 to drive the cover shell 101 and other parts to descend.

[0042] The cutting unit includes an arc partition 201, a limit block 202, an arc cutter 203, a connecting block 204, a pressing block 205 and a contact block 206; the inner wall of the protective cover 102 is fixedly connected with the arc partition 201; the outer arc surface of the arc partition 201 is fixedly connected with the limit block 202, and the limit block 202 is made of high temperature resistant material; a temperature sensor is arranged inside the limit block 202; the arc cutter 203 is slidably connected inside the limit block 202, and the arc cutter 203 is made of heat conductive metal material; a heating wire is arranged on the arc cutter 203; A connecting block 204 is fixedly connected to the upper part of the cutting knife 203; a sliding groove 10201 is provided on the protective cover 102; a pressing block 205 is slidably provided in the sliding groove 10201; the pressing block 205 is slidably connected to the connecting block 204, and a spring is provided between the connecting block 204 and the pressing block 205; a contact block 206 is provided on the pressing block 205, and the contact block 206 is in contact with the inner wall of the protective cover 102; an avoidance hole 10202 is provided at the lower left part of the protective cover 102; an indicator light 10203 is provided on the protective cover 102.

[0043] Furthermore, in order to increase the friction between the contact block 206 and the protective cover 102 , a non-slip rubber layer is provided at the contact portion between the contact block 206 and the inner wall of the protective cover 102 .

[0044] The lower part of the arc-shaped cutting knife 203 is semicircular, and the lower part and the inner arc surface of the arc-shaped cutting knife 203 are provided with cutting edges.

[0045] It also includes a fixed block 301 and a scraper 302; two fixed blocks 301 are fixedly connected to the lower surface of the protective cover 102, and the two fixed blocks 301 are respectively located at the front and rear sides of the avoidance hole 10202 in the lower left part of the protective cover 102; each fixed block 301 is rotatably connected to a scraper 302 through a torsion spring, and the two scrapers 302 fit each other.

[0046] Furthermore, in order to prevent the device from tipping over when placed alone, a supporting portion 5001 is provided on the outer arc surface of each arc-shaped clamping plate 5 .

[0047] The working steps of this embodiment are:

[0048] The following rotations are from front to back, from top to bottom, and from right to left.

[0049] The first step is to place the portable anti-corrosion and thermal insulation pipe cutting device at a desired position when in use. Hereinafter, the portable anti-corrosion and thermal insulation pipe cutting device is referred to as the device for short.

[0050] In the second step, the operator connects an external power supply to all parts that need to be driven by electricity, places two bases at the bottom of the anti-corrosion and thermal insulation pipe 9 to lift the anti-corrosion and thermal insulation pipe 9 off the ground, restricts the anti-corrosion and thermal insulation pipe 9 through the two bases, and then cuts the anti-corrosion and thermal insulation pipe 9 with a manual hand-held angle grinder. However, due to the manual hand-held angle grinder, the cutting depth of the cutting blade 108 cannot be accurately controlled, and the cutting depth of the cutting blade 108 needs to be adjusted while observing, so that the high-speed rotating cutting blade 108 will contact the working steel pipe of the anti-corrosion and thermal insulation pipe 9 and cut a notch in the outer ring surface of the working steel pipe. This not only increases the manual workload and low cutting efficiency, but also leads to a decrease in the service life of the working steel pipe, affecting the quality of the anti-corrosion and thermal insulation pipe 9. Therefore, when the anti-corrosion and thermal insulation pipe 9 is placed on two After being mounted on the base, the rotating parts of the four electric rotating shafts 4 are controlled to drive the two arc-shaped clamps 5 and the two H-shaped clamps 7 to rotate, so that the arc-shaped clamps 5 and the H-shaped clamps 7 are spread out at an obtuse angle, and then the angle between the arc-shaped clamps 5 and the H-shaped clamps 7 is adjusted to the maximum range, and then the device is placed on the anti-corrosion and thermal insulation pipe 9, and the anti-corrosion and thermal insulation pipe 9 is located between the angle between the arc-shaped clamps 5 and the H-shaped clamps 7, and the bracket 1 of the device is moved to the position on the anti-corrosion and thermal insulation pipe 9 that needs to be cut. At this time, the arc surface at the lower part of the limiting cover 105 contacts the anti-corrosion and thermal insulation pipe 9, and then the rotating parts of the four electric rotating shafts 4 are controlled to drive the two arc-shaped clamps 5 and the two H-shaped clamps 7 to rotate in the direction close to the anti-corrosion and thermal insulation pipe 9, until the limiting roller 1 6 and the limiting roller 2 8 contact the outer annular surface of the anti-corrosion and thermal insulation pipe 9, and the anti-corrosion and thermal insulation pipe 9 is clamped. Figure 7 As shown;

[0051] In the third step, after the anti-corrosion and thermal insulation pipe 9 is clamped, the operator grasps the handle 3 and presses the drive button 3001 to control the output shaft of the motor 106 to rotate, driving the connecting shaft 107 and the cutting blade 108 to rotate together. When the cutting blade 108 is in the high-speed rotation process, a downward force is applied to the handle 3 to force the two spring telescopic rods 2 to compress, thereby driving the housing 101, the protective cover 102, the sealing plate 103, the motor 106, the connecting shaft 107 and the cutting blade 108 to move downward together, so that the limit cover 105 enters the protective cover 1 02, and the continuously rotating cutting blade 108 passes through the limit cover 105 and contacts with the outer sleeve of the anti-corrosion and thermal insulation pipe 9, and cuts the outer sleeve of the anti-corrosion and thermal insulation pipe 9 by the continuously rotating cutting blade 108. After the cutting blade 108 cuts a hole in the outer sleeve of the anti-corrosion and thermal insulation pipe 9, the operator grabs the device and surrounds the anti-corrosion and thermal insulation pipe 9 for one week, and cuts off the part of the outer sleeve of the anti-corrosion and thermal insulation pipe 9 that needs to be cut off by the continuously rotating cutting blade 108, and then releases the driving button 3001 to stop the output shaft of the motor 106 from rotating.

[0052] During the rotation of the connecting shaft 107, the heating wire on the arc cutter 203 is controlled to work and heat the arc cutter 203 until the temperature sensor in the limit block 202 detects that the blade temperature of the arc cutter 203 rises to a level that can cut the polyurethane foam insulation layer. The control indicator light 10203 lights up to prompt the operator that the temperature on the arc cutter 203 has reached the preset value.

[0053] The fourth step is that after the cutting blade 108 cuts off the outer sleeve of the anti-corrosion and thermal insulation pipe 9, the cutting blade 108 stops rotating, and the operator continues to apply downward force to the handle 3. The two spring telescopic rods 2 do not drive the cover shell 101, the protective cover 102, the sealing plate 103, the motor 106, the connecting shaft 107 and the cutting blade 108 to reset upward. At this time, the indicator light 10203 is in a lit state, and the temperature on the arc cutter 203 reaches the preset value. The operator presses the pressing block 205 downward to compress the spring between the pressing block 205 and the connecting block 204, and the contact block 206 no longer contacts the inner wall of the protective cover 102, and then pushes the pressing block 205 to move downward along the trajectory of the slide groove 10201, driving the arc cutter 203, the connecting block 204 and the contact block 206 to move together, and the arc The cutter 203 slides in the limit block 202, so that the arc cutter 203 passes through the avoidance hole 10202, moves out of the protective cover 102, and is inserted into the insulation layer of the anti-corrosion and thermal insulation pipe 9, until the semicircular end of the arc cutter 203 contacts the working steel pipe of the anti-corrosion and thermal insulation pipe 9 and cannot move further. The operator releases the pressing block 205, and under the action of the spring between the pressing block 205 and the connecting block 204, the contact block 206 contacts the inner wall of the protective cover 102, so that the arc cutter 203 is fixed. Then the operator grabs the device and surrounds the anti-corrosion and thermal insulation pipe 9 for one circle, so that the high-temperature arc cutter 203 rotates for one circle in the insulation layer of the anti-corrosion and thermal insulation pipe 9. Under the action of the blade and high temperature of the arc cutter 203, the insulation layer of the anti-corrosion and thermal insulation pipe 9 melts and quickly solidifies to form a smooth cutting surface.

[0054] In this way, the continuously rotating cutting blade 108 surrounds the outer sleeve of the anti-corrosion and thermal insulation pipe 9 for one circle, and the part of the outer sleeve of the anti-corrosion and thermal insulation pipe 9 that needs to be cut off is cut off, and then the arc-shaped cutting knife 203 is inserted into the insulation layer of the anti-corrosion and thermal insulation pipe 9 and surrounds the insulation layer of the anti-corrosion and thermal insulation pipe 9 for one circle. The insulation layer of the anti-corrosion and thermal insulation pipe 9 is melted and quickly solidified by the blade and high temperature of the arc-shaped cutting knife 203 to form a smooth cutting surface. Compared with cutting by manual hand-held angle grinder, this method not only has a fast cutting speed, a smooth cutting surface, and a clean cutting process, but also will not cause damage to the working steel pipe of the anti-corrosion and thermal insulation pipe 9, affecting the service life of the working steel pipe. In addition, the high-temperature arc-shaped cutting knife 203 cuts the insulation layer of the anti-corrosion and thermal insulation pipe 9, and does not generate a large amount of dust, thereby avoiding the operator from absorbing a large amount of dust during the cutting process, which endangers their health.

[0055] When the insulation layer of the anti-corrosion and thermal insulation pipe 9 is cut, press the pressing block 205 to prevent the contact block 206 from contacting the inner wall of the protective cover 102, and then push the pressing block 205 to move upward along the trajectory of the slide groove 10201, and retract the arc-shaped cutting knife 203 into the protective cover 102. Then the operator no longer applies downward force to the handle 3, and allows the two spring telescopic rods 2 to drive the connected parts to reset upward, and then control the rotating parts of the four electric rotating shafts 4 to drive the two arc-shaped clamps 5 and the two H-shaped clamps 7 to no longer clamp the anti-corrosion and thermal insulation pipe 9, and remove the device from the anti-corrosion and thermal insulation pipe 9. Then the operator removes the outer sleeve and insulation layer cut from the anti-corrosion and thermal insulation pipe 9, and then connects the anti-corrosion and thermal insulation pipe 9, that is, docks the two anti-corrosion and thermal insulation pipes 9.

[0056] It should be noted that when the high-temperature curved cutter 203 cuts the insulation layer of the anti-corrosion insulation pipe 9, a small amount of insulation layer debris will adhere to the blade of the curved cutter 203. Under the action of high temperature, the insulation layer debris will solidify into blocks and adhere to the curved cutter 203. When the insulation layer debris solidified on the curved cutter 203 increases, it will affect the temperature transfer on the curved cutter 203, and then affect the cutting effect of the curved cutter 203. Therefore, when the curved cutter 203 moves out of the protective cover 102, it will contact the two scrapers 302, pushing the two scrapers 302 to rotate to the opposite sides, forcing the torsion spring to rotate. After the curved cutter 203 passes through the two scrapers 302, the two scrapers 302 stop rotating, and under the action of the torsion spring, the two scrapers 302 will stick to the front and rear sides of the curved cutter 203;

[0057] When the arc-shaped cutting knife 203 returns to the protective cover 102, the scraper 302 which continuously sticks to the front and rear sides of the arc-shaped cutting knife 203 will scrape off the solid insulation layer debris attached to the arc-shaped cutting knife 203, so as to avoid a large amount of insulation layer debris attached to the arc-shaped cutting knife 203, which will affect the subsequent cutting effect.

[0058] Example 2

[0059] On the basis of Example 1, Figure 1 and Figure 6-Figure 8 As shown, it also includes a receiving frame 401, rollers 402 and support bars 403; a groove 40101 is provided on the receiving frame 401; two rollers 402 are rotatably connected in the groove 40101; a support bar 403 is respectively provided at the lower left and lower right parts of the receiving frame 401.

[0060] Furthermore, in order to prevent the receiving frame 401 , the roller 402 and the support bar 403 from sliding off the bracket 1 , a limiting groove 40301 is provided on each support bar 403 .

[0061] The working principle of this embodiment is:

[0062] In step 2 of embodiment 1: since the anticorrosion insulation pipe 9 is not only long but also heavy, and the anticorrosion insulation pipe 9 is restricted by two bases, the anticorrosion insulation pipe 9 cannot rotate. When cutting the anticorrosion insulation pipe 9, the operator needs to grasp the device and rotate it around the anticorrosion insulation pipe 9, which increases the workload of the operator. Therefore, in order to reduce the burden on the staff, a receiving frame 401 and a roller 402 are designed. Figure 1 As shown, before cutting the anti-corrosion and thermal insulation pipe 9, the receiving frame 401 and the roller 402 are adjusted so that the two rollers 402 face upward and the anti-corrosion and thermal insulation pipe 9 is placed between the two rollers 402. Figure 7 As shown, when the operator cuts the anti-corrosion and thermal insulation pipe 9, there is no need to manually grasp the device to surround the anti-corrosion and thermal insulation pipe 9, and only the anti-corrosion and thermal insulation pipe 9 needs to be rotated, thus reducing the burden on the operator;

[0063] In the prior art, in order to allow the anti-corrosion and thermal insulation pipe 9 to be suspended in the air, two sets of receiving frames 401 and rollers 402 must be carried to support the two ends of the anti-corrosion and thermal insulation pipe 9. However, the operator has only two hands and can only carry the device and a set of receiving frames 401 and rollers 402. Therefore, two support bars 403 are provided on the receiving frame 401, and each support bar 403 is also provided with a limiting groove 40301. When the operator needs to carry the device to move, the rotating parts of the four electric shafts 4 are controlled to rotate so that the angle between the arc-shaped clamping plate 5 and the H-shaped clamping plate 7 is adjusted to the minimum, and then the roller 402 on the receiving frame 401 is turned downward, and then the device is grasped and placed horizontally between the two supporting bars 403. When the bracket 1 moves to the limiting groove 40301, it is lifted up to allow the bracket 1 to be embedded in the two limiting grooves 40301. Figure 8As shown, the receiving frame 401, the roller 402 and the support bar 403 are prevented from sliding off the bracket 1. In this way, when the operator lifts the device with one hand, he can also carry a set of receiving frames 401 and rollers 402, and the other hand only needs to hold a set of receiving frames 401 and rollers 402. This meets the necessary support for the anti-corrosion and thermal insulation pipe 9 to be suspended in the air, and the operator does not need to go back and forth many times to take the supporting components.

[0064] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A portable anti-corrosion and thermal insulation pipe cutting device, comprising a bracket (1), a spring telescopic rod (2) and a handle (3); the upper surface of the bracket (1) is fixedly connected to two spring telescopic rods (2); the telescopic ends of the two spring telescopic rods (2) are commonly fixedly connected to the handle (3); a driving button (3001) is provided on the handle (3); the characteristics are: It also comprises an electric rotating shaft (4), an arc-shaped clamping plate (5), a limiting roller 1 (6), an H-shaped clamping plate (7), a limiting roller 2 (8), a cutting unit and a shearing unit; two electric rotating shafts (4) are respectively installed on the left and right parts of the bracket (1); the rotating parts of the two electric rotating shafts (4) on the same side are respectively fixedly connected to the arc-shaped clamping plate (5) and the H-shaped clamping plate (7); the inner arc surface of each arc-shaped clamping plate (5) is provided with a limiting roller 1 (6); each H-shaped clamping plate (7) is provided with a limiting roller 2 (8); the bracket (1) and the handle (3) are connected together with a cutting unit for cutting the anti-corrosion insulation pipe (9); the cutting unit is connected to a cutting unit for cutting the insulation layer; The cutting unit comprises a cover (101), a protective cover (102), a sealing plate (103), a U-shaped plate (104), a limit cover (105), a motor (106), a connecting shaft (107) and a cutting blade (108); the lower part of the handle (3) is fixedly connected to the cover (101); the front part of the cover (101) is connected to the protective cover (102); the front part of the protective cover (102) is detachably connected to the sealing plate (103); the upper surface of the bracket (1) is fixedly connected to the U-shaped plate (104), and the U-shaped plate (104) is located between two spring extensions. The U-shaped plate (104) is detachably connected to a limiting cover (105) at the front; the lower part of the limiting cover (105) is in an arc shape; the limiting cover (105) is located below the protective cover (102); a motor (106) is fixedly connected to the housing (101); the output shaft of the motor (106) is fixedly connected to a connecting shaft (107); a cutting blade (108) is detachably connected to the front part of the connecting shaft (107), and the cutting blade (108) is located in the protective cover (102), and the cutting blade (108) is directly opposite to the limiting cover (105); The cutting unit further comprises a folded cloth (109); the folded cloth (109) is arranged between the protective cover (102) and the U-shaped plate (104); The cutting unit comprises an arc-shaped partition (201), a limit block (202), an arc-shaped cutting knife (203), a connecting block (204), a pressing block (205) and a contact block (206); the inner wall of the protective cover (102) is fixedly connected with the arc-shaped partition (201); the outer arc surface of the arc-shaped partition (201) is fixedly connected with the limit block (202); a temperature sensor is arranged inside the limit block (202); the arc-shaped cutting knife (203) is slidably connected inside the limit block (202); a heating wire is arranged on the arc-shaped cutting knife (203); the upper part of the arc-shaped cutting knife (203) is fixedly connected with the connecting block ( 204); a slide groove (10201) is provided on the protective cover (102); a pressing block (205) is slidably provided in the slide groove (10201); the pressing block (205) is slidably connected to the connecting block (204), and a spring is provided between the connecting block (204) and the pressing block (205); a contact block (206) is provided on the pressing block (205), and the contact block (206) is in contact with the inner wall of the protective cover (102); an avoidance hole (10202) is provided at the lower left portion of the protective cover (102); and an indicator light (10203) is provided on the protective cover (102).

2. A portable anti-corrosion and thermal insulation pipe cutting device according to claim 1, characterized in that: The contact portion between the contact block (206) and the inner wall of the protective cover (102) is provided with an anti-slip rubber layer.

3. A portable anti-corrosion and thermal insulation pipe cutting device according to claim 1, characterized in that: The lower portion of the arc-shaped cutting knife (203) is semicircular, and the lower portion and the inner arc surface of the arc-shaped cutting knife (203) are provided with a blade.

4. A portable anti-corrosion and thermal insulation pipe cutting device according to claim 1, characterized in that: It also includes a fixed block (301) and a scraper (302); the two fixed blocks (301) are fixedly connected to the lower surface of the protective cover (102), and the two fixed blocks (301) are respectively located at the front side and the rear side of the avoidance hole (10202) at the lower left part of the protective cover (102); each fixed block (301) is rotatably connected to a scraper (302) via a torsion spring, and the two scrapers (302) are in contact with each other.

5. The portable anti-corrosion and thermal insulation pipe cutting device according to claim 1 is characterized in that: A supporting portion (5001) is provided on the outer arc surface of each arc-shaped clamping plate (5).

6. A portable anti-corrosion and thermal insulation pipe cutting device according to claim 5, characterized in that: It also includes a receiving frame (401), a roller (402) and a support bar (403); a groove (40101) is provided on the receiving frame (401); two rollers (402) are rotatably connected in the groove (40101); and a support bar (403) is respectively provided at the lower left and lower right parts of the receiving frame (401).

7. A portable anti-corrosion and thermal insulation pipe cutting device according to claim 6, characterized in that: A limiting groove (40301) is formed on each supporting bar (403).

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