Nuclear power pipeline metal thermal insulation layer cutting device

Abstract

The invention discloses a nuclear power pipeline metal heat preservation layer cutting device, and relates to the technical field of metal cutting, the nuclear power pipeline metal heat preservation layer cutting device comprises a shell, an expansion support and a thin plate, a main support is fixedly installed on the shell, a main driving assembly is fixedly installed at the end, away from the shell, of the main support, and a driving wheel is fixedly installed on an output shaft of the main driving assembly; an internally-arranged main frame is further fixedly installed on the shell, a rotating main shaft is rotationally installed on the internally-arranged main frame, an eccentric cutter head is fixedly installed on the rotating main shaft and arranged between the internally-arranged main frame, the rotating center of the eccentric cutter head is located at the axis of the rotating main shaft, and the eccentric cutter head is eccentrically arranged on the rotating main shaft. According to the device, the eccentric cutterhead and the cutting tool are eccentrically arranged, and the rotation range of the eccentric cutterhead is limited in cooperation with the upper stop sliding block, so that the cutting depth of the device can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal cutting, and is specifically a cutting device for metal insulation layer in nuclear power pipelines. Background Art

[0002] The pipe insulation layer is also called the thermal pipe insulation layer, which usually plays the role of thermal insulation. In the existing technology, the pipe insulation layer is usually composed of an outer shell and a filler, and the outer shell is generally made of stainless steel sheets. In the assembly of the pipe insulation layer, although most of them are prefabricated in the factory in advance, there will still be some small flaws or leaks in the actual installation. At this time, it is necessary to temporarily cut the stainless steel sheets for sewing.

[0003] In the process of cutting stainless steel sheets, people usually use a knife to manually scratch the stainless steel sheets, and then separate the stainless steel sheets by tearing the scratches. Finally, they use a special edge pressing machine to press the stainless steel sheets. Otherwise, there will be many burrs at the dividing points of the stainless steel sheets, which is not conducive to welding or use.

[0004] The Chinese invention patent with publication number CN113828937A discloses a cutting device for processing stainless steel reinforcement plates. This invention uses a fixing mechanism to fix the steel plate on the cutting table to avoid the steel plate from shifting during the cutting process. The first displacement mechanism and the second displacement mechanism are used in coordination to drive the laser cutting knife to move left and right and forward and backward, thereby improving the accuracy of the cutting operation, ensuring that the reinforcement plate of the appropriate size can be cut out at one time, and greatly improving work efficiency. The entire device replaces the manual cutting method with a fully automatic cutting method, which not only saves time and effort but also reduces the labor intensity of personnel.

[0005] In the prior art, there is no device that can accurately determine the cutting depth according to the thickness of the stainless steel sheet. At the construction site, manual scratching and cutting or tearing are adopted, and the quality of the shell assembled in this way is uncontrollable. Moreover, at the construction site, stainless steel sheets of different thicknesses are often replaced for use. The specific cutting tool used cannot determine the cutting depth, resulting in excessive burrs or no cutting. Summary of the invention

[0006] In response to the above technical problems, the present invention proposes the following technical solutions: A nuclear power pipeline metal insulation layer cutting device comprises an auxiliary base, a shell, an extension bracket, and a thin plate. The auxiliary base is used to assist cutting. The extension bracket is connected to the shell by bolts. The extension bracket can be separated from the shell after the screw rod is removed. Handles are arranged on both sides of the shell. A main bracket is fixedly installed on the shell. A main drive component is fixedly installed on the end of the main bracket away from the shell. A driving wheel is fixedly installed on the output shaft of the main drive component. The driving wheel is rotatably connected to the shell and can contact the thin plate. The outer shell is also fixedly installed with an internal main frame, a rotating main shaft is rotatably installed on the internal main frame, an eccentric cutter disc is fixedly installed on the rotating main shaft, the eccentric cutter disc is arranged between the internal main frames, the eccentric cutter disc is cylindrical, the rotation center of the eccentric cutter disc is at the axis of the rotating main shaft, the eccentric cutter disc is eccentrically arranged on the rotating main shaft, a cutting tool is fixedly installed on the outer side surface of the eccentric cutter disc, the length of the cutting tool is three-fifths of the circumference of the eccentric cutter disc, a collision protrusion is also fixedly installed on the outer side of the eccentric cutter disc, the collision protrusion is fixedly connected to the cutting tool, a supporting slide rail is also arranged on the internal main frame, the supporting slide rail is arc-shaped, the axis of the supporting slide rail coincides with the axis of the rotating main shaft, a stopping slider is also slidably installed on the supporting slide rail, and protruding round bars are fixedly installed at both ends of the stopping slider.

[0007] Furthermore, a double-tooth slider is slidably mounted on the shell, one end of the double-tooth slider is provided with a ratchet, and a transverse slide groove is fixedly mounted on the end of the double-tooth slider away from the shell, and the protruding round rod is arranged in the transverse slide groove, and the protruding round rod can slide freely in the transverse slide groove.

[0008] Furthermore, a vertical spring is fixedly installed on the outer side of the horizontal slide groove, and the other end of the vertical spring is fixedly installed on the outer shell. A sliding rack is provided on one side of the double-tooth slider, and a first gear is meshingly installed on the double-tooth slider. The first gear is rotatably connected to the outer shell, and a first ratchet is fixedly installed on one end of the first gear. A gearbox is also fixedly installed on the outer shell, and a pawl rod is fixedly installed on the output shaft of the gearbox, and an active ratchet is rotatably installed on the end of the pawl rod away from the output shaft of the gearbox.

[0009] Furthermore, the active pawl contacts the first ratchet to drive the first ratchet to rotate, and the active pawl and the first ratchet can only transmit torque in one direction. A measuring gear is fixedly installed on the input end of the gearbox, and a measuring rod is meshingly installed on the measuring gear. A side bracket is slidably installed on the measuring rod, and the side bracket is fixedly connected to the outer shell. A measuring wheel is rotatably installed on the end of the measuring rod away from the outer shell, and the measuring wheel can contact the thin plate. A measuring spring is also fixedly installed on the measuring rod, and the other end of the measuring spring is fixedly installed on the side bracket.

[0010] Furthermore, a recovery handle is slidably mounted on the shell, a sliding vertical rod is fixedly mounted on the recovery handle, a sliding vertical rod is also slidably mounted on the sliding vertical rod, a plurality of upper pawls are rotatably mounted on the sliding vertical rod, a first torsion spring is fixedly mounted on the upper pawl for resetting, the other end of the first torsion spring is fixedly mounted on the sliding vertical rod, a transverse spring is also fixedly mounted on the sliding vertical rod for returning to an initial position, and the other end of the transverse spring is fixedly connected to the shell.

[0011] Furthermore, a plurality of inner rotating frames are rotatably installed at both ends of the rotating main shaft, a friction spring is fixedly installed on the inner rotating frame, the other end of the friction spring is fixedly connected to the rotating main shaft, a friction arc disk is rotatably installed at one end of the inner rotating frame away from the axis of the rotating main shaft, and a plurality of outer rotating cylinders are respectively arranged at both ends of the rotating main shaft, and the outer rotating cylinders are in friction contact with the friction arc disk.

[0012] Furthermore, a lower support plate is fixedly mounted on the outer shell, and the lower support plate is rotatably connected to the driving wheel. A transmission gear is rotatably mounted on the lower support plate, and a belt is provided on the transmission gear. The other end of the belt is provided on the outer drum for transmitting power. A main wheel gear is also meshingly mounted on the transmission gear, and the main wheel gear is fixedly connected to the driving wheel.

[0013] Furthermore, a screw rod is rotatably installed on the extension bracket, and a rear slide is also slidably installed on the extension bracket, the rear slide is connected to the screw rod by a thread, and a dividing tool is fixedly installed on the end of the rear slide away from the extension bracket, an upper pressure wheel is rotatably installed on the rear slide, and a lower pressure wheel is rotatably installed on the rear slide, and a gap of a predetermined width is left between the upper pressure wheel and the lower pressure wheel, one end of the screw rod is also fixedly installed with a rear worm gear, a rear worm is meshingly installed on the rear worm gear, the rear worm gear is rotatably connected to the extension bracket, a rear bevel gear is fixedly installed on the end of the rear worm gear away from the rear worm gear, and a rotating handle is rotatably installed on the extension bracket, and a passive bevel gear is fixedly installed on the end of the rotating handle close to the rear worm gear, and the passive bevel gear meshes with the rear bevel gear.

[0014] Compared with the prior art, the present invention has the following advantages: (1) the present invention limits the rotation range of the eccentric cutter disc by means of the eccentric setting of the eccentric cutter disc and the cutting tool, and cooperates with the stop slider to make the cutting depth of the present invention adjustable; (2) the present invention maintains the state of the cutting tool by means of the double-tooth slider in conjunction with the ratchet, which facilitates the replacement of the thin plate for the next round of cutting and improves the work efficiency; (3) the present invention quickly detects the thickness of the thin plate by the movement of the measuring rod, so that the present invention can quickly locate the required cutting depth without manual adjustment, thereby ensuring the cutting quality and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the device.

[0016] Figure 2 It is a schematic diagram of the structure after the auxiliary base, thin plate and shell of this device.

[0017] Figure 3 This is a schematic diagram of the rear slide structure of this device.

[0018] Figure 4 This is a schematic diagram of the structure of the device after the shell is cut away.

[0019] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0020] Figure 6 This is a schematic diagram of the structure of the outer drum of this device after sectioning.

[0021] Figure 7 for Figure 6 A partial enlarged view of point B in the middle.

[0022] Figure 8 for Figure 6 A partial enlarged view of point C in the middle.

[0023] Fig. 9 This is a schematic diagram of the eccentric cutter disc structure of this device.

[0024] Fig.10 This is a schematic diagram of the supporting slide rail structure of this device.

[0025] Fig.11 This is a schematic diagram of the first ratchet structure of the device.

[0026] Reference numerals: 101-auxiliary base; 102-extension bracket; 103-screw; 104-rear slide; 105-upper pressure wheel; 106-lower pressure wheel; 107-splitting tool; 108-rear worm wheel; 109-rear worm; 110-rear bevel gear; 111-rotation handle; 112-thin plate; 201-driving wheel; 202-main bracket; 203-housing; 204-recovery handle; 205-sliding vertical rod; 206-double-tooth slider; 207-upper ratchet; 208-vertical spring; 209-lateral spring; 210-measuring gear; 211-measuring rod; 212-side bracket; 213-measuring gear; 214-measuring rod; 215-side bracket; 216-measuring gear; 217-measuring rod; 218-side bracket; 219-measuring gear; 220-measuring gear; 221-measuring gear; 222-measuring gear; 223-measuring gear; 224-measuring gear; 225-measuring gear; 226-side bracket; 227-measuring gear; 228-measuring gear; 229-measuring gear; 230-measuring gear; 231-measuring gear; 232-measuring gear; 233-measuring gear; 234-measuring gear; 235-measuring gear; 236-measuring gear; 237-measuring gear; 238-measuring gear; 239-measuring gear; 240-measuring gear; 2 3-measuring spring; 214-measuring wheel; 215-stop slider; 216-lateral slide; 218-side support plate; 301-eccentric cutter disc; 302-outer rotating cylinder; 303-belt; 304-inner rotating frame; 305-friction arc disc; 306-friction spring; 307-rotating main shaft; 308-collision bump; 309-cutting tool; 310-inner main frame; 311-supporting slide rail; 312-lower support plate; 313-transmission gear; 314-main wheel gear; 401-first gear; 402-first ratchet; 403-active ratchet; 404-ratchet rod; 405-gearbox. DETAILED DESCRIPTION

[0027] like Figures 1 to 3As shown, a nuclear power pipeline metal insulation layer cutting device includes an auxiliary base 101, a shell 203, an extension bracket 102, and a thin plate 112. The auxiliary base 101 is used to assist in cutting. The extension bracket 102 is connected to the shell 203 by bolts. After the screw rod is removed, the extension bracket 102 and the shell 203 can be separated. Handles are provided on both sides of the shell 203. A plurality of side support plates 218 are also fixedly installed on the shell 203. The side support plates 218 can contact the thin plate 112 to keep the device parallel to the thin plate 112. A screw rod 103 is rotatably installed on the extension bracket 102. A rear slide 104 is also slidably installed on the extension bracket 102. The rear slide 104 is connected to the screw rod 103 by threads. The end of the rear slide 104 away from the extension bracket 102 is fixedly installed with a separation bracket. Cutting tool 107, the rear slide 104 is also rotatably mounted with an upper pressure wheel 105, the rear slide 104 is also rotatably mounted with a lower pressure wheel 106, a gap of predetermined width is left between the upper pressure wheel 105 and the lower pressure wheel 106, and the upper pressure wheel 105 and the lower pressure wheel 106 are used to remove burrs on the cut thin plate when rotating, one end of the screw rod 103 is also fixedly mounted with a rear worm gear 108, a rear worm 109 is meshingly mounted on the rear worm gear 108, the rear worm 109 is rotatably connected to the extension bracket 102, the end of the rear worm 109 away from the rear worm gear 108 is fixedly mounted with a rear bevel gear 110, the extension bracket 102 is also rotatably mounted with a rotating handle 111, the end of the rotating handle 111 close to the rear worm 109 is fixedly mounted with a passive bevel gear, and the passive bevel gear is meshed with the rear bevel gear 110.

[0028] like Figure 2 , Figure 4 , Figure 6 , Fig. 9 , Fig.10As shown, a main bracket 202 is fixedly mounted on the shell 203, and a main driving assembly is fixedly mounted on one end of the main bracket 202 away from the shell 203. A driving wheel 201 is fixedly mounted on the output shaft of the main driving assembly. The driving wheel 201 is rotatably connected to the shell 203, and the driving wheel 201 can contact the thin plate 112. An internal main frame 310 is also fixedly mounted on the shell 203, and a rotating main shaft 307 is rotatably mounted on the internal main frame 310. An eccentric cutter disc 301 is fixedly mounted on the rotating main shaft 307. The eccentric cutter disc 301 is arranged between the internal main frames 310, and the eccentric cutter disc 301 is cylindrical. The rotation center of the eccentric cutter disc 301 is at the axis of the rotating spindle 307, but the axis of the eccentric cutter disc 301 does not coincide with the axis of the rotating spindle 307. The eccentric cutter disc 301 is eccentrically arranged on the rotating spindle 307. A cutting tool 309 is fixedly installed on the outer surface of the eccentric cutter disc 301. The length of the cutting tool 309 is three-fifths of the circumference of the eccentric cutter disc 301. A collision bump 308 is also fixedly installed on the outer side of the eccentric cutter disc 301. The collision bump 308 is fixedly connected to the cutting tool 309. The purpose of this is to allow the rotating spindle 307 to adjust the cutting depth according to the rotation angle of the rotating spindle 307 when it rotates.

[0029] like Figure 6 and Figures 8 to 10As shown, a plurality of inner rotating frames 304 are rotatably installed at both ends of the rotating main shaft 307, and a friction spring 306 is fixedly installed on the inner rotating frame 304, and the other end of the friction spring 306 is fixedly connected to the rotating main shaft 307, and a friction arc disk 305 is rotatably installed at one end of the inner rotating frame 304 away from the axis of the rotating main shaft 307, and a plurality of outer rotating cylinders 302 are respectively arranged at both ends of the rotating main shaft 307, and the outer rotating cylinder 302 is in friction contact with the friction arc disk 305, and a lower support plate 312 is also fixedly installed on the outer shell 203, and the lower support plate 312 is rotatably connected to the driving wheel 201, and a transmission gear 313 is rotatably installed on the lower support plate 312, and a belt 303 is arranged on the transmission gear 313, and the other end of the belt 303 is arranged on the outer rotating cylinder 302 for transmitting power, and a main wheel gear 314 is also meshingly installed on the transmission gear 313, and the main wheel gear 314 is fixedly connected to the driving wheel 201, Here, the inner rotating frame 304, the friction arc disk 305, the friction spring 306, and the outer rotating cylinder 302 are in a drum brake state. When the outer rotating cylinder 302 rotates, the outer rotating cylinder 302 will drive the rotating main shaft 307 to rotate together through the friction arc disk 305 and the inner rotating frame 304. When the rotating main shaft 307 is subjected to a force opposite to the rotation, the friction arc disk 305 and the outer rotating cylinder 302 begin to slip. At this time, the rotation of the outer rotating cylinder 302 will not drive the rotating main shaft 307 to rotate. A supporting rail 311 is also provided on the internal main frame 310. The supporting rail 311 is arc-shaped. The axis of the supporting rail 311 coincides with the axis of the rotating main shaft 307. The shape of the supporting rail 311 is the trajectory of the eccentric cutter disc 301 when it rotates. A stopping slider 215 is also slidably installed on the supporting rail 311. Protruding round rods are fixedly installed at both ends of the stopping slider 215. The stopping slider 215 can contact the collision bump 308 when working.

[0030] like Figures 4 to 7 and Fig.11As shown, a recovery handle 204 is also slidably mounted on the housing 203, a sliding vertical rod 205 is fixedly mounted on the recovery handle 204, a sliding vertical rod 205 is also slidably mounted on the sliding vertical rod 205, a plurality of upper ratchet pawls 207 are rotatably mounted on the sliding vertical rod 205, a first torsion spring is fixedly mounted on the upper ratchet 207 for resetting, the other end of the first torsion spring is fixedly mounted on the sliding vertical rod 205, a transverse spring 209 is also fixedly mounted on the sliding vertical rod 205 for returning to the initial position, the other end of the transverse spring 209 is fixedly connected to the housing 203, and a double-tooth sliding The double-tooth slider 206 is provided with a ratchet at one end close to the sliding vertical rod 205, and the ratchet contacts the upper pawl 207. When the double-tooth slider 206 contacts the upper pawl 207, the double-tooth slider 206 can only move away from the housing 203, and cannot move towards the housing 203. The double-tooth slider 206 is fixedly installed with a transverse groove 216 at one end away from the housing 203, and the protruding round rod is arranged in the transverse groove 216, and the protruding round rod can slide freely in the transverse groove 216. A vertical spring 208 is fixedly installed on the outer side of the transverse groove 216, and the other end of the vertical spring 208 is fixedly installed on the outer side. On the housing 203, a sliding rack is provided on a side of the double-tooth slider 206 away from the sliding vertical rod 205, a first gear 401 is meshedly installed on the double-tooth slider 206, the first gear 401 is rotatably connected to the housing 203, a first ratchet 402 is fixedly installed on one end of the first gear 401, a gearbox 405 is also fixedly installed on the housing 203, a pawl rod 404 is fixedly installed on the output shaft of the gearbox 405, an active pawl 403 is rotatably installed on the end of the pawl rod 404 away from the output shaft of the gearbox 405, and the active pawl 403 contacts the first ratchet 402 to drive the first ratchet 402 Rotationally, the active ratchet 403 and the first ratchet 402 can only transmit torque in one direction, and a measuring gear 210 is fixedly installed on the input end of the gearbox 405, on which a measuring rod 211 is meshingly installed, and a side bracket 212 is slidably installed on the measuring rod 211, and the side bracket 212 is fixedly connected to the housing 203, and a measuring wheel 214 is rotatably installed on one end of the measuring rod 211 away from the housing 203, and the measuring wheel 214 can contact the thin plate 112, and a measuring spring 213 is also fixedly installed on the measuring rod 211, and the other end of the measuring spring 213 is fixedly installed on the side bracket 212.

[0031] Working principle: When using the device, the bolts can be removed to separate the extension bracket 102 from the shell 203. When the shell 203 is separated, the device can only perform the cutting and scratching function, and cannot split the entire thin plate 112. When the cutting and scratching function is used alone, no auxiliary device is required. When the extension bracket 102 is used, it needs to be used in conjunction with the auxiliary base 101. The working method of cutting and scratching is explained in detail below. When using it, you need to hold the handle manually, and then let the active wheel 201 on the device contact with the thin plate 112, and let the side support plate 218 contact with the thin plate 112. The side support plate 218 will play a role in keeping the device parallel to the thin plate 112. Note that the measuring wheel 214 should not be in contact with the thin plate 112 at this time. In the above case, the device is manually pushed to move, the purpose of which is to allow the measuring wheel 214 to contact the thin plate 112. The measuring wheel 214 will be squeezed by the thin plate 112 due to the thickness of the thin plate 112. At this time, the measuring wheel 214 will compress the measuring spring 213, and the measuring wheel 214 will move toward the housing 203. At this time, the measuring rod 211 will rotate with the measuring gear 210, and the measuring gear 210 will input power into the gearbox 405. After the gearbox 405 changes the speed, the output shaft of the gearbox 405 rotates with the pawl rod 404, so that the pawl rod 404 rotates with the first ratchet 402 through the active pawl 403 and the first gear 401 The first gear 401 drives the double-tooth slider 206 to move away from the housing 203. The purpose of this is to allow the transverse slide groove 216 to move away from the housing 203 together, and to allow the transverse slide groove 216 to squeeze the stop slider 215 to squeeze the stop slider 215, so that the stop slider 215 slides on the supporting rail 311. The purpose of sliding the stop slider 215 is to confirm the rotation range of the collision protrusion 308. When the stop slider 215 slides to a predetermined distance on the supporting rail 311, the main drive component is started at this time to drive the driving wheel 201 to rotate. The main function of the driving wheel 201 is to drive the device or the thin plate to move. When the driving wheel 201 rotates, the driving wheel 201 The outer rotating drum 302 is rotated by the main wheel gear 314, the transmission gear 313, and the belt 303. The outer rotating drum 302 then drives the rotating main shaft 307 and the eccentric cutter disc 301 to rotate together through the friction arc disk 305 and the inner rotating frame 304. At this time, the eccentric cutter disc 301 begins to rotate eccentrically, allowing the cutting tool 309 to gradually approach the thin plate 112 to prepare for cutting. The eccentric cutter disc 301 will not stop until the collision protrusion 308 contacts the stop slider 215. At this time, the state of the eccentric cutter disc 301 and the cutting tool 309 is the state required for the final cutting. At this time, because the stop slider 215 is stuck by the horizontal slide groove 216 and the supporting slide rail 311, the eccentric cutter disc 301 can no longer rotate.Then the friction arc disc 305 and the outer drum 302 begin to slip, and the outer drum 302 rotates at this time, the rotation of the outer drum 302 will not rotate with the rotation spindle 307. ,

[0032] After entering the cutting state, it is worth mentioning that at this time, due to work needs, when the device needs to cut a thin plate 112 of the same thickness, if the device needs to be moved, the state of the eccentric cutter disc 301 on the device will not be restored to its original state due to the measuring wheel 214 returning to the initial state. Only when the recovery handle 204 is manually pulled to allow the upper ratchet 207 on the sliding vertical rod 205 to disengage from the double-toothed slider 206, the double-toothed slider 206 and the horizontal slide groove 216 will be restored to the initial position by the vertical spring 208, and the corresponding vertical spring 208 will also squeeze the collision protrusion 308 through the stop slider 215, so that the collision protrusion 308 returns to the initial position, and the double-toothed slider 206 is set here to adapt to the needs of the working environment to prevent the need for re-adjustment when cutting multiple incoherent thin plates 112, thereby reducing work efficiency.

[0033] The use process of the extended bracket 102 in the present device is roughly as follows: first, a person manually pulls the cut thin plate 112 to contact the dividing tool 107. After the thin plate 112 is divided by the dividing tool 107, the person manually pulls the thin plate 112 into between the upper pressing wheel 105 and the lower pressing wheel 106, so that the upper pressing wheel 105 and the lower pressing wheel 106 can squeeze the thin plate 112. The upper pressing wheel 105 and the lower pressing wheel 106 in this device can be driven by an additional motor to automate the edge pressing work. When encountering thicker materials, since the toughness of the material is reduced, the rotating handle 111 can be turned to drive the screw 103 to rotate through the rear bevel gear 110, the rear worm 109, and the rear worm wheel 108, so that the rear slide 104 moves away from the rear worm wheel 108 to reduce the inclination angle of the thin plate 112 after being cut.

Claims

1. A nuclear power pipeline metal insulation layer cutting device, comprising an auxiliary base (101), a shell (203), an extension bracket (102), and a thin plate (112), wherein the auxiliary base (101) is used to assist cutting, the extension bracket (102) and the shell (203) are connected by bolts, and the extension bracket (102) and the shell (203) can be separated after the screws are removed, and handles are arranged on both sides of the shell (203), characterized in that: A main bracket (202) is fixedly mounted on the housing (203); a main drive assembly is fixedly mounted on one end of the main bracket (202) away from the housing (203); a driving wheel (201) is fixedly mounted on the output shaft of the main drive assembly; the driving wheel (201) is rotatably connected to the housing (203); and the driving wheel (201) can contact the thin plate (112). An internal main frame (310) is also fixedly mounted on the outer shell (203); a rotating main shaft (307) is rotatably mounted on the internal main frame (310); an eccentric cutter disc (301) is fixedly mounted on the rotating main shaft (307); the eccentric cutter disc (301) is arranged between the internal main frames (310); the eccentric cutter disc (301) is cylindrical; the rotation center of the eccentric cutter disc (301) is located at the axis of the rotating main shaft (307); the eccentric cutter disc (301) is eccentrically arranged on the rotating main shaft (307); and a cutting tool (309) is fixedly mounted on the outer surface of the eccentric cutter disc (301). The length of the cutting tool (309) is three-fifths of the circumference of the eccentric cutter disc (301); a collision protrusion (308) is fixedly mounted on the outer side of the eccentric cutter disc (301); the collision protrusion (308) is fixedly connected to the cutting tool (309); a supporting slide rail (311) is also arranged on the internal main frame (310); the supporting slide rail (311) is arc-shaped; the axis of the supporting slide rail (311) coincides with the axis of the rotating main shaft (307); a stopping slide rail (215) is also slidably mounted on the supporting slide rail (311); and protruding round bars are fixedly mounted on both ends of the stopping slide rail (215).

2. According to claim 1, a nuclear power pipeline metal insulation layer cutting device is characterized by: A double-tooth slider (206) is also slidably mounted on the housing (203), one end of the double-tooth slider (206) being provided with ratchet teeth, and a transverse slide groove (216) is fixedly mounted on one end of the double-tooth slider (206) away from the housing (203), the protruding round rod being arranged in the transverse slide groove (216), and the protruding round rod can slide freely in the transverse slide groove (216).

3. A nuclear power pipeline metal insulation layer cutting device according to claim 2, characterized in that: A vertical spring (208) is fixedly mounted on the outer side surface of the transverse slide groove (216), and the other end of the vertical spring (208) is fixedly mounted on the housing (203). A sliding rack is provided on one side of the double-tooth slider (206), and a first gear (401) is meshingly mounted on the double-tooth slider (206). The first gear (401) is rotatably connected to the housing (203), and a first ratchet (402) is fixedly mounted on one end of the first gear (401). A gearbox (405) is also fixedly mounted on the housing (203), and a ratchet rod (404) is fixedly mounted on the output shaft of the gearbox (405), and an active ratchet (403) is rotatably mounted on one end of the ratchet rod (404) away from the output shaft of the gearbox (405).

4. A nuclear power pipeline metal insulation layer cutting device according to claim 3, characterized in that: The active ratchet (403) contacts the first ratchet (402) to drive the first ratchet (402) to rotate; the active ratchet (403) and the first ratchet (402) can only transmit torque in one direction; a measuring gear (210) is fixedly mounted on the input end of the gearbox (405); a measuring rod (211) is meshingly mounted on the measuring gear (210); a side bracket (212) is slidably mounted on the measuring rod (211); the side bracket (212) is fixedly connected to the housing (203); a measuring wheel (214) is rotatably mounted on one end of the measuring rod (211) away from the housing (203); the measuring wheel (214) can contact the thin plate (112); a measuring spring (213) is also fixedly mounted on the measuring rod (211); the other end of the measuring spring (213) is fixedly mounted on the side bracket (212).

5. The nuclear power pipeline metal insulation layer cutting device according to claim 1, characterized in that: A recovery handle (204) is also slidably mounted on the housing (203), a sliding vertical rod (205) is fixedly mounted on the recovery handle (204), a sliding vertical rod (205) is also slidably mounted on the sliding vertical rod (205), a plurality of upper ratchets (207) are rotatably mounted on the sliding vertical rod (205), a first torsion spring is fixedly mounted on the upper ratchets (207) for resetting, the other end of the first torsion spring is fixedly mounted on the sliding vertical rod (205), a transverse spring (209) is also fixedly mounted on the sliding vertical rod (205) for returning to an initial position, and the other end of the transverse spring (209) is fixedly connected to the housing (203).

6. A nuclear power pipeline metal insulation layer cutting device according to claim 1, characterized in that: A plurality of inner rotating frames (304) are rotatably mounted on both ends of the rotating main shaft (307), a friction spring (306) is fixedly mounted on the inner rotating frame (304), the other end of the friction spring (306) is fixedly connected to the rotating main shaft (307), a friction arc disk (305) is rotatably mounted on one end of the inner rotating frame (304) away from the axis of the rotating main shaft (307), and a plurality of outer rotating cylinders (302) are respectively arranged on both ends of the rotating main shaft (307), and the outer rotating cylinders (302) are in friction contact with the friction arc disk (305).

7. A nuclear power pipeline metal insulation layer cutting device according to claim 1, characterized in that: A lower support plate (312) is also fixedly mounted on the housing (203), the lower support plate (312) is rotatably connected to the driving wheel (201), a transmission gear (313) is rotatably mounted on the lower support plate (312), a belt (303) is arranged on the transmission gear (313), the other end of the belt (303) is arranged on the outer drum (302) for transmitting power, a main wheel gear (314) is also meshedly mounted on the transmission gear (313), and the main wheel gear (314) is fixedly connected to the driving wheel (201).

8. The nuclear power pipeline metal insulation layer cutting device according to claim 1, characterized in that: A screw rod (103) is rotatably mounted on the extension bracket (102), a rear slide (104) is also slidably mounted on the extension bracket (102), the rear slide (104) is connected to the screw rod (103) by threads, a splitting tool (107) is fixedly mounted on one end of the rear slide (104) away from the extension bracket (102), an upper pressing wheel (105) is also rotatably mounted on the rear slide (104), a lower pressing wheel (106) is also rotatably mounted on the rear slide (104), and a gap of a predetermined width is left between the upper pressing wheel (105) and the lower pressing wheel (106). A rear worm wheel (108) is fixedly mounted on one end of the lead screw (103), a rear worm gear (109) is meshingly mounted on the rear worm gear (108), the rear worm gear (109) is rotatably connected to the extension bracket (102), a rear bevel gear (110) is fixedly mounted on one end of the rear worm gear (109) away from the rear worm wheel (108), a rotating handle (111) is rotatably mounted on the extension bracket (102), a passive bevel gear is fixedly mounted on one end of the rotating handle (111) close to the rear worm gear (109), and the passive bevel gear meshes with the rear bevel gear (110).

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