A high-altitude cable cutting device with easy blade replacement

Abstract

The present invention discloses a high-altitude cable shearing device that is easy to replace blades. The device comprises a base and two cross-arranged blades. One end of the base is fixedly connected to a rotating shaft with a circular cross-section. The end of the rotating shaft away from the base is fixedly connected to a first limit plate and a second limit plate. A connecting hole is provided in the middle of the blade. The blade comprises a blade portion and a handle portion. One side of the connecting hole is provided with a first avoidance groove for the first limit plate to pass through, and the other side of the connecting hole is provided with a second avoidance groove for the second limit plate to pass through. Rotating surfaces are provided on opposite sides of the connecting hole. The first limit plate abuts against the blade and is staggered with the first avoidance groove. The second limit plate abuts against the blade and is staggered with the second avoidance groove. The base is provided with a rotating device for driving the blade to rotate around the axis of the rotating shaft so that the first limit plate and the first avoidance groove are positioned in correspondence with each other and the second limit plate and the second avoidance groove are positioned in correspondence with each other. The present invention has a quick-release function.

Description

Technical Field

[0001] The present invention relates to the technical field of cable cutting, and in particular to a high-altitude cable cutting device with convenient blade replacement. Background Art

[0002] In power systems, some electrical equipment draws its current from leads connected to overhead cables. When repairing these devices, the leads must be cut near the overhead cables to prevent current from entering the equipment through the leads, thereby ensuring personnel safety. Because the leads are thick and hard, the shearing device often requires blade replacement after repeated cuts. Existing shearing devices lack quick-release functionality, requiring specialized tools to replace the blades. Summary of the Invention

[0003] In order to solve the shortcoming that the existing shearing device does not have a quick-release function, the present invention proposes a high-altitude cable shearing device that is easy to replace the blade. The device has a quick-release function and does not require special tools when replacing the blade.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-altitude cable shearing device that is easy to replace blades, comprising a base and two cross-arranged blades, one end of the base is fixedly connected to a rotating shaft, the cross section of the rotating shaft is circular, the end of the rotating shaft away from the base is fixedly connected to a first limiting plate and a second limiting plate, the extension directions of the first limiting plate and the second limiting plate are both perpendicular to the axis of the rotating shaft, a connecting hole is provided in the middle of the blade, the rotating shaft passes through the connecting hole and is rotatably connected to the connecting hole, the blade comprises a blade portion and a handle portion, the rotating shaft is provided between the blade portion and the handle portion, and one side of the connecting hole is provided with a hole for the first limiting plate to pass through The first avoidance groove is provided, and the other side of the connecting hole is provided with a second avoidance groove for the second limit plate to pass through. The opposite two sides of the connecting hole are provided with rotating surfaces. The first avoidance groove transitions to the second avoidance groove through the rotating surface. The rotating surface fits the side of the rotating shaft. The first limit plate abuts against the blade and is staggered with the first avoidance groove. The second limit plate abuts against the blade and is staggered with the second avoidance groove. The base is provided with a rotating device for driving the blade to rotate around the axis of the rotating shaft so that the first limit plate and the first avoidance groove positions correspond to each other and the second limit plate and the second avoidance groove positions correspond to each other.

[0006] The rotating shaft is used to limit the blade so that when the blade rotates, it rotates around the axis of the rotating shaft. The blade portion is used to cut the lead wire. Specifically, the rotating device drives the blade to rotate by driving the handle portion, that is, the handle portion drives the blade portion to rotate, and the blade portion closes and cuts the lead wire. When the first limit plate and the first avoidance groove are offset and the second limit plate and the second avoidance groove are offset, the first limit plate and the second limit plate limit the two blades on the base, which can prevent the connecting hole and the rotating shaft from disengaging. During the process of the blade rotating and cutting the lead wire, the first limit plate is always offset from the first avoidance groove, and the second limit plate is always offset from the second avoidance groove. When the blades need to be replaced, the rotating device drives the blades to rotate, the blade portion is separated, and the handle portion is separated. When the angle between the two handle portions is basically 180 degrees, the first avoidance groove and the first limit plate are overlapped, and the second avoidance groove and the second limit plate are overlapped. At this time, the two blades can be removed from the base, the first limit plate passes through the first avoidance groove, the second limit plate passes through the second avoidance groove, and the connecting hole and the rotating shaft are disengaged. When installing the blades, the two blades are placed crosswise on the base. During the placement process, the first limit plate passes through the first avoidance groove, the second limit plate passes through the second avoidance groove, the rotating shaft passes through the connecting hole, and the rotating surface and the rotating shaft are in contact. At this point, the blade replacement is complete. The entire blade replacement process does not require the use of special tools, and blade replacement is very convenient.

[0007] Furthermore, the rotating device includes a driving seat for connecting to the tool handle part and a driving mechanism for driving the driving seat to move along the base. The driving seat includes a sliding seat slidably connected to the base. Both ends of the sliding seat are fixedly connected to a driving shaft. The driving shaft and the tool handle part correspond one to one. The end of the driving shaft away from the sliding seat is fixedly connected to a third limiting plate. The tool handle part is provided with a first long hole. The end of the first long hole close to the blade part is provided with a third avoidance groove for the third limiting plate to pass through. The drive shaft passes through the corresponding first long hole. The third limiting plate is provided on the side of the tool handle part away from the sliding seat. The end of the blade part close to the tool handle part is provided with a fourth avoidance groove for avoiding the third limiting plate. The fourth avoidance groove is provided on the outside of the blade part.

[0008] With this arrangement, the drive mechanism drives the blade to rotate via a drive shaft on the drive base. Specifically, the drive shaft pushes the inner wall of the first slot, causing the blade to rotate. The third stop plate ensures that the blade remains in contact with the sliding base during rotation, preventing it from disengaging from the sliding base, thereby enhancing blade stability. The third avoidance groove allows the third stop plate to pass through, allowing the blade to be removed from the sliding base.

[0009] Specifically, when removing the blade, the sliding seat approaches the rotating shaft, the driving shaft pushes the handle part to rotate, the driving shaft moves along the first long hole toward the third avoidance groove, and the blade part opens. When the first limit plate and the first avoidance groove are in corresponding positions and the second limit plate and the second avoidance groove are in corresponding positions, the third avoidance groove and the third limit plate are in corresponding positions, the third limit plate enters the fourth avoidance groove, and the blade is removed. During the disassembly process, the first limit plate passes through the first avoidance groove, the second limit plate passes through the second avoidance groove, and the third limit plate passes through the third avoidance groove.

[0010] When installing the blades, place the two blades crosswise on the base. During the placement process, the first limit plate passes through the first avoidance groove, the second limit plate passes through the second avoidance groove, the rotating shaft passes through the connecting hole, the third limit plate passes through the third avoidance groove and makes the drive shaft pass through the third avoidance groove, the driving mechanism drives the sliding seat away from the rotating shaft, the driving shaft drives the shank part to rotate, the driving shaft slides into the first long hole, the blade parts approach each other, the first avoidance groove and the first limit plate are staggered, and the second avoidance groove and the second limit plate are staggered.

[0011] Furthermore, the base is fixedly connected to a bushing, the driving mechanism includes a driving sleeve passing through the bushing and rotatably connected to the bushing, the driving sleeve is internally threaded with a screw rod, the screw rod and the sliding seat are fixedly connected, and the driving mechanism also includes a motor for rotating the driving sleeve and causing the screw rod to move along the axial direction of the screw rod.

[0012] The bushing is used to stabilize the drive sleeve. The drive sleeve can only rotate about the drive sleeve's axis relative to the bushing, and cannot move along the drive sleeve's axis relative to the bushing. The drive sleeve is provided with an internal thread that mates with a lead screw. The drive sleeve and the lead screw are coaxial. When the drive sleeve rotates about the drive sleeve's axis, the lead screw moves along its axis, thereby driving the sliding seat toward or away from the rotating shaft. The motor can be configured as a servo motor, which has good precision, ensuring a high precision in the distance the sliding seat moves, and thus in the rotation of the blade.

[0013] Furthermore, a high-altitude cable shearing device that is easy to replace the blade also includes an insulating rod, a base is arranged at one end of the insulating rod and is fixedly connected to the insulating rod through a connecting piece, a rotating groove is provided at one end of the insulating rod close to the base, a first groove is provided on one side of the rotating groove, and a second groove is provided on the other side of the rotating groove, a first positioning shaft is rotatably connected in the first groove, a second positioning shaft is rotatably connected in the second groove, a connecting seat is provided between the first positioning shaft and the second positioning shaft, the first positioning shaft and the connecting seat are fixedly connected, the second positioning shaft and the connecting seat are rotatably connected, the drive sleeve is rotatably connected to the connecting seat at one end away from the sliding seat, the outer periphery of the drive sleeve is fixedly connected to an annular bevel gear, the second positioning shaft is fixedly connected to the first drive bevel gear, the first drive bevel gear and the annular bevel gear are meshed, the motor and the second positioning shaft are fixedly connected and the annular bevel gear is driven to rotate by the first drive bevel gear to drive the drive sleeve to rotate.

[0014] People on the ground can hold the insulating rod to cut the lead. The first positioning axis and the second positioning axis are coaxial, and the connecting seat is rotatably connected in the rotating groove. Specifically, the connecting seat can rotate around the axis of the first positioning axis. The connecting seat and the drive sleeve are rotatably connected. The connecting seat and the drive sleeve are coaxial. Specifically, the connecting seat can rotate around the axis of the drive sleeve relative to the drive sleeve. The insulating rod is connected to the base through the connecting seat and the drive sleeve. Through the above arrangement, the base can rotate around the axis of the first positioning axis, thereby adjusting the angle of the base relative to the insulating rod, and then adjusting the direction of the blade. During the adjustment process, the annular bevel gear also rotates around the axis of the first positioning axis, and the annular bevel gear is always engaged with the first drive bevel gear. The connector can fix the angle between the base and the insulating rod.

[0015] Furthermore, the connecting member includes an arc-shaped connecting plate, the center of which is located on the axis of the second positioning shaft, the connecting plate is provided with a second long hole, the second long hole extends along the direction of the connecting plate, one end of the connecting plate is fixedly connected to the base, and the other end of the connecting plate is abutted against the insulating rod and fixedly connected to the insulating rod by a fastener passing through the second long hole.

[0016] The fastener can be set as a bolt. When adjusting the angle of the base, the fastener is loosened, and then the base is rotated, and the fastener moves along the second long hole. When the angle adjustment is completed, the fastener is tightened, and the connecting plate is pressed against one side of the insulating rod. The connecting plate is fixed on the insulating rod, and the base and the insulating rod are relatively fixed.

[0017] Furthermore, a manual operating rod is rotatably connected inside the insulating rod, and the extension direction of the manual operating rod is consistent with the extension direction of the insulating rod. One end of the manual operating rod is fixedly connected to the second drive bevel gear, and the second drive bevel gear is meshed with the first drive bevel gear. A handle is provided at the end of the insulating rod away from the base, and the handle is fixedly connected to the manual operating rod.

[0018] When the motor fails to rotate due to a fault, the manual operating lever can be rotated by turning the handle. The manual operating lever drives the second drive bevel gear to rotate, the second drive bevel gear drives the first drive bevel gear, and the first drive bevel gear drives the drive sleeve to rotate, ultimately achieving the opening and closing of the blade. This application allows manual cutting of the lead wire when the motor fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of an embodiment;

[0020] Figure 2 is a schematic diagram of a blade;

[0021] Figure 3 for Figure 1 Schematic diagram behind hidden blade;

[0022] Figure 4 for Figure 3 A magnified view of point A;

[0023] Figure 5 for Figure 3 BB cross-sectional view;

[0024] Figure 6 This is a schematic diagram of the blade being disassembled;

[0025] Figure 7 is a side view of an embodiment;

[0026] Figure 8 This is a schematic diagram after the base is rotated. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0028] See also Figures 1 to 8 , a high-altitude cable shearing device that is easy to replace the blade, includes a base 11 and two cross-arranged blades 12, one end of the base 11 is fixedly connected to a rotating shaft 111, the cross section of the rotating shaft 111 is circular, and the end of the rotating shaft 111 away from the base 11 is fixedly connected to a first limiting plate 112 and a second limiting plate 113, the extension directions of the first limiting plate 112 and the second limiting plate 113 are perpendicular to the axis of the rotating shaft 111, a connecting hole 121 is provided in the middle of the blade 12, the rotating shaft 111 passes through the connecting hole 121 and is rotatably connected to the connecting hole 121, the blade 12 includes a blade portion 122 and a handle portion 123, the rotating shaft 111 is arranged between the blade portion 122 and the handle portion 123, and a first avoidance portion for the first limiting plate 112 to pass through is provided on one side of the connecting hole 121 Slot 1211, a second avoidance groove 1212 for the second limit plate 113 to pass through is provided on the other side of the connecting hole 121, and a rotating surface 1213 is provided on the opposite sides of the connecting hole 121. The first avoidance groove 1211 transitions to the second avoidance groove 1212 through the rotating surface 1213, and the rotating surface 1213 fits the side of the rotating shaft 111. The first limit plate 112 and the blade 12 are in contact with each other and staggered with the first avoidance groove 1211. The second limit plate 113 and the blade 12 are in contact with each other and staggered with the second avoidance groove 1212. The base 11 is provided with a rotating device 13 for driving the blade 12 to rotate around the axis of the rotating shaft 111 so that the positions of the first limit plate 112 and the first avoidance groove 1211 correspond and the positions of the second limit plate 113 and the second avoidance groove 1212 correspond.

[0029] The rotating shaft 111 is used to limit the blade 12 so that when the blade 12 rotates, the blade 12 rotates around the axis of the rotating shaft 111. The blade portion 122 is used to cut the lead. Specifically, the rotating device 13 drives the blade 12 to rotate by driving the handle portion 123, that is, the handle portion 123 drives the blade portion 122 to rotate, and the blade portion 122 closes and cuts the lead. When the first limiting plate 112 and the first avoidance groove 1211 are staggered and the second limiting plate 113 and the second avoidance groove 1212 are staggered, the first limiting plate 112 and the second limiting plate 113 limit the two blades 12 on the base 11, which can prevent the connecting hole 121 and the rotating shaft 111 from disengaging. In the process of the blade 12 rotating and shearing the lead, the first limiting plate 112 is always staggered with the first avoidance groove 1211, and the second limiting plate 113 is always staggered with the second avoidance groove 1212. See Figure 6 When the blade 12 needs to be replaced, the rotating device 13 drives the blade 12 to rotate, the blade portion 122 separates, and the handle portion 123 separates. When the angle between the two handle portions 123 is basically 180 degrees, the first avoidance groove 1211 and the first limit plate 112 coincide with the position of the second avoidance groove 1212 and the second limit plate 113 coincide with the position of the second avoidance groove 1213. At this time, the two blades 12 can be removed from the base 11, the first limit plate 112 passes through the first avoidance groove 1211, the second limit plate 113 passes through the second avoidance groove 1212, and the connecting hole 121 and the rotating shaft 111 are disengaged. When installing the blades 12, place the two blades 12 crosswise on the base 11. During the placement process, the first limit plate 112 passes through the first avoidance groove 1211, the second limit plate 113 passes through the second avoidance groove 1212, the rotating shaft 111 passes through the connecting hole 121, and the rotating surface 1213 fits with the rotating shaft 111. At this point, the replacement of the blade 12 is completed. The entire process of replacing the blade 12 does not require the aid of special tools, and replacing the blade 12 is very convenient.

[0030] The rotating device 13 includes a driving seat 131 for connecting to the handle portion 123, a driving mechanism 132 for driving the driving seat 131 to move along the base 11, the driving seat 131 includes a sliding seat 1311 slidably connected to the base 11, and both ends of the sliding seat 1311 are fixedly connected to a driving shaft 1312. The driving shaft 1312 corresponds to the handle portion 123 one by one. The end of the driving shaft 1312 away from the sliding seat 1311 is fixedly connected to a third limiting plate 1313. The handle portion 123 is provided with a first long hole. 1231, the first long hole 1231 is close to the end of the blade part 122 and is provided with a third avoidance groove 1232 for the third limiting plate 1313 to pass through, the drive shaft 1312 passes through the corresponding first long hole 1231, the third limiting plate 1313 is arranged on the side of the handle part 123 away from the sliding seat 1311, and the blade part 122 is close to the end of the handle part 123 and is provided with a fourth avoidance groove 1221 for avoiding the third limiting plate 1313, and the fourth avoidance groove 1221 is arranged on the outside of the blade part 122.

[0031] The drive mechanism 132 drives the blade 12 to rotate via a drive shaft 1312 on the drive base 131. Specifically, the drive shaft 1312 pushes against the inner wall of the first slot 1231, causing the blade 12 to rotate. The third stopper plate 1313 ensures that the blade 12 remains in contact with the sliding base 1311 during rotation, preventing it from disengaging from the sliding base 1311, thereby enhancing the stability of the blade 12. The third avoidance groove 1232 allows the third stopper plate 1313 to pass through, allowing the blade 12 to be removed from the sliding base 1311.

[0032] Specifically, when removing the blade 12, the sliding seat 1311 approaches the rotating shaft 111, and the driving shaft 1312 pushes the handle part 123 to rotate. The driving shaft 1312 moves along the first long hole 1231 to the third avoidance groove 1232, and the blade part 122 opens. When the first limit plate 112 and the first avoidance groove 1211 correspond in position and the second limit plate 113 and the second avoidance groove 1212 correspond in position, the third avoidance groove 1232 and the third limit plate 1313 correspond in position, and the third limit plate 1313 enters the fourth avoidance groove 1221 to remove the blade 12. During the disassembly process, the first limit plate 112 passes through the first avoidance groove 1211, the second limit plate 113 passes through the second avoidance groove 1212, and the third limit plate 1313 passes through the third avoidance groove 1232.

[0033] When installing the blades 12, the two blades 12 are placed crosswise on the base 11. During the placement process, the first limit plate 112 passes through the first avoidance groove 1211, the second limit plate 113 passes through the second avoidance groove 1212, the rotating shaft 111 passes through the connecting hole 121, the third limit plate 1313 passes through the third avoidance groove 1232 and makes the driving shaft 1312 pass through the third avoidance groove 1232, the driving mechanism 132 drives the sliding seat 1311 away from the rotating shaft 111, the driving shaft 1312 drives the handle part 123 to rotate, the driving shaft 1312 slides into the first long hole 1231, the blade parts 122 approach each other, the first avoidance groove 1211 and the first limit plate 112 are staggered, and the second avoidance groove 1212 and the second limit plate 113 are staggered.

[0034] The base 11 is fixedly connected to the bushing 114, and the driving mechanism 132 includes a driving sleeve 1321 that passes through the bushing 114 and is rotatably connected to the bushing 114. The driving sleeve 1321 is internally threaded with a screw rod 1322, and the screw rod 1322 is fixedly connected to the sliding seat 1311. The driving mechanism 132 also includes a motor 1323 for rotating the driving sleeve 1321 and causing the screw rod 1322 to move along the axial direction of the screw rod 1322.

[0035] Bushing 114 is used to stabilize drive sleeve 1321. Drive sleeve 1321 can only rotate around the axis of drive sleeve 1321 relative to bushing 114, and cannot move along the axis of drive sleeve 1321 relative to bushing 114. Drive sleeve 1321 is provided with an internal thread, which cooperates with screw rod 1322. Drive sleeve 1321 and screw rod 1322 are coaxial. When drive sleeve 1321 rotates around the axis of drive sleeve 1321, screw rod 1322 moves along the axis of screw rod 1322, thereby driving sliding seat 1311 toward or away from rotating shaft 111. Motor 1323 can be configured as a servo motor 1323 with good precision, so that the distance movement of sliding seat 1311 is more accurate, and thus the rotation accuracy of blade 12 is better.

[0036] A high-altitude cable shearing device that is easy to replace the blade also includes an insulating rod 14, a base 11 is set at one end of the insulating rod 14 and is fixedly connected to the insulating rod 14 through a connecting piece 15, and an end of the insulating rod 14 close to the base 11 is provided with a rotating groove 141 with an opening facing the base 11, a first groove 142 is provided on one side of the rotating groove 141, and a second groove 143 is provided on the other side of the rotating groove 141, a first positioning shaft 144 is rotatably connected in the first groove 142, a second positioning shaft 145 is rotatably connected in the second groove 143, and a connecting seat 14 is provided between the first positioning shaft 144 and the second positioning shaft 145. 6. The first positioning shaft 144 is fixedly connected to the connecting seat 146, the second positioning shaft 145 is rotatably connected to the connecting seat 146, the end of the driving sleeve 1321 away from the sliding seat 1311 is rotatably connected to the connecting seat 146, the outer periphery of the driving sleeve 1321 is fixedly connected to the annular bevel gear 1324, the second positioning shaft 145 is fixedly connected to the first driving bevel gear 1451, the first driving bevel gear 1451 and the annular bevel gear 1324 are meshed, the motor 1323 is fixedly connected to the second positioning shaft 145 and drives the annular bevel gear 1324 to rotate through the first driving bevel gear 1451 to drive the driving sleeve 1321 to rotate.

[0037] A person on the ground can hold the insulating rod 14 to cut the lead wire. The first positioning shaft 144 and the second positioning shaft 145 are coaxial. The connecting seat 146 is rotatably connected to the rotating groove 141. Specifically, the connecting seat 146 can rotate around the axis of the first positioning shaft 144. The connecting seat 146 is rotatably connected to the drive sleeve 1321. The connecting seat 146 and the drive sleeve 1321 are coaxial. Specifically, the connecting seat 146 can rotate around the axis of the drive sleeve 1321 relative to the drive sleeve 1321. The insulating rod 14 is connected to the base 11 through the connecting seat 146 and the drive sleeve 1321. Figure 7 and Figure 8With the above arrangement, the base 11 can rotate about the axis of the first positioning shaft 144, thereby adjusting the angle of the base 11 relative to the insulating rod 14 and, in turn, adjusting the orientation of the blade portion 122. During this adjustment, the annular bevel gear 1324 also rotates about the axis of the first positioning shaft 144 and remains in constant engagement with the first driving bevel gear 1451. The connector 15 can also fix the angle between the base 11 and the insulating rod 14.

[0038] The connecting member 15 includes an arc-shaped connecting plate 151, the center of which is located on the axis of the second positioning shaft 145. The connecting plate 151 is provided with a second long hole 1451, and the second long hole 1451 extends along the direction of the connecting plate 151. One end of the connecting plate 151 is fixedly connected to the base 11, and the other end of the connecting plate 151 abuts against the insulating rod 14 and is fixedly connected to the insulating rod 14 by a fastener 152 passing through the second long hole 1451.

[0039] The fastener 152 can be set as a bolt. When adjusting the angle of the base 11, the fastener 152 is loosened, and then the base 11 is rotated, and the fastener 152 moves along the second long hole 1451. When the angle adjustment is completed, the fastener 152 is tightened, and the connecting plate 151 is pressed against one side of the insulating rod 14. The connecting plate 151 is fixed on the insulating rod 14, and the base 11 and the insulating rod 14 are relatively fixed.

[0040] A manual operating rod 147 is rotatably connected inside the insulating rod 14, and the extension direction of the manual operating rod 147 is consistent with the extension direction of the insulating rod 14. One end of the manual operating rod 147 is fixedly connected to the second drive bevel gear 1471, and the second drive bevel gear 1471 is engaged with the first drive bevel gear 1451. A handle 1472 is provided at the end of the insulating rod 14 away from the base 11, and the handle 1472 is fixedly connected to the manual operating rod 147.

[0041] When the motor 1323 fails to rotate due to a malfunction, the manual operating lever 147 can be rotated by turning the handle 1472. The manual operating lever 147 drives the second driving bevel gear 1471 to rotate. The second driving bevel gear 1471 drives the first driving bevel gear 1451. The first driving bevel gear 1451 drives the driving sleeve 1321 to rotate, ultimately achieving the opening and closing of the blade portion 122. This application allows manual cutting of the lead wire when the motor 1323 fails.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A high-altitude cable cutting device with easy blade replacement, characterized in that:

18. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. The cam is provided with a rotation device for driving the blade to rotate around the axis of the rotating shaft so that the first limit plate and the first avoidance groove position correspond to each other and the second limit plate and the second avoidance groove position correspond to each other; the rotation device includes a driving seat connected to the knife handle portion and a driving mechanism for driving the driving seat to move along the base, the driving seat includes a sliding seat slidably connected to the base, both ends of the sliding seat are fixedly connected to the driving shaft, the driving shaft and the knife handle portion correspond one to one, one end of the driving shaft away from the sliding seat is fixedly connected to the third limit plate, the knife handle portion is provided with a first long hole, an end of the first long hole close to the blade portion is provided with a third avoidance groove for the third limit plate to pass through, the driving shaft passes through the corresponding first long hole, the third limit plate is arranged on a side of the knife handle portion away from the sliding seat, and the end of the blade portion close to the handle portion is provided with a fourth avoidance groove for avoiding the third limit plate, and the fourth avoidance groove is arranged on the outer side of the blade portion; When the blade is removed, the sliding seat approaches the rotating shaft, the driving shaft pushes the shank portion to rotate, the driving shaft moves along the first long hole toward the third avoidance groove, the blade portion opens, and when the first limiting plate and the first avoidance groove are positioned correspondingly and the second limiting plate and the second avoidance groove are positioned correspondingly, the third avoidance groove and the third limiting plate are positioned correspondingly, the third limiting plate enters the fourth avoidance groove, and the blade is removed. During the disassembly process, the first limiting plate passes through the first avoidance groove, the second limiting plate passes through the second avoidance groove, and the third limiting plate passes through the third avoidance groove; When installing the blades, the two blades are placed crosswise on the base. During the placement process, the first limit plate passes through the first avoidance groove, the second limit plate passes through the second avoidance groove, the rotating shaft passes through the connecting hole, the third limit plate passes through the third avoidance groove and allows the drive shaft to pass through the third avoidance groove, the driving mechanism drives the sliding seat away from the rotating shaft, the driving shaft drives the shank part to rotate, the driving shaft slides into the first long hole, the blade parts approach each other, the first avoidance groove and the first limit plate are staggered, and the second avoidance groove and the second limit plate are staggered.

2. The high-altitude cable cutting device with easy blade replacement according to claim 1 is characterized in that: The base is fixedly connected to a bushing, the driving mechanism includes a driving sleeve passing through the bushing and rotatably connected to the bushing, the driving sleeve is internally threaded with a screw rod, the screw rod is fixedly connected to the sliding seat, and the driving mechanism also includes a motor for rotating the driving sleeve and causing the screw rod to move along the axial direction of the screw rod.

3. The high-altitude cable cutting device with easy blade replacement according to claim 2 is characterized in that: The cam is fixedly mounted on the support frame, and the cam is secured to the base with a first end fixed to the support frame, wherein the cam is secured on a first position and a second end of the cam is secured on a second position.

4. The high-altitude cable cutting device with easy blade replacement according to claim 3 is characterized in that: The connecting member includes an arc-shaped connecting plate, the center of which is located on the axis of the second positioning shaft, and the connecting plate is provided with a second long hole, which extends along the direction of the connecting plate. One end of the connecting plate is fixedly connected to the base, and the other end of the connecting plate abuts against the insulating rod and is fixedly connected to the insulating rod by a fastener passing through the second long hole.

5. The high-altitude cable cutting device with easy blade replacement according to claim 3 is characterized in that: A manual operating rod is rotatably connected inside the insulating rod, and the extension direction of the manual operating rod is consistent with the extension direction of the insulating rod. One end of the manual operating rod is fixedly connected to a second drive bevel gear, and the second drive bevel gear is meshed with the first drive bevel gear. A handle is provided at the end of the insulating rod away from the base, and the handle is fixedly connected to the manual operating rod.

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