Conductor cutting device with positioning function for medium-voltage cable

Abstract

The invention relates to the technical field of cable processing, and discloses a conductor cutting device with a positioning function for a medium-voltage cable, which comprises a cutting assembly, a grinding groove is formed in the cutting assembly, a grinding sheet is embedded in the grinding groove, a compression assembly is arranged on the cutting assembly, and two compression storage units are connected to the compression assembly. According to the cable cutting device, the polishing pieces are embedded in the two sides of the cutting piece, the polishing pieces can polish the cutting port of the cable, burrs and sharp edges at the cutting port are removed, the situation that in the subsequent construction and operation process, the burrs pierce a cable insulating layer is avoided, the risk of safety accidents such as short circuit and electric leakage caused by damage to the insulating layer is reduced, and the service life of the cable is prolonged. According to the cable cutting device, personal safety and stable operation of an electric power system are guaranteed, meanwhile, the temperature of sprayed fluid is low by means of adiabatic expansion generated after compressed gas is sprayed out of the coiled pipe, and therefore the cutting piece, the grinding piece and the cut part of a cable are cooled, and the situation that abrasion of the cutting piece and the grinding piece is aggravated due to the too high temperature is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing, and particularly to a conductor truncating device with a positioning function for medium-voltage cables. Background Art

[0002] With the acceleration of the urbanization process, the construction of smart grids, and the development of the new energy industry, the market demand for medium-voltage cables has been continuously increasing. Especially in the new energy field, such as wind power and solar energy, medium-voltage cables, as an important carrier for power transmission, have shown an explosive growth in demand; During the construction of the power system, cables need to be connected to different electrical equipment. Since the distances between various equipment are fixed and the production length standards of cables are unified, in order to achieve precise connection, it is necessary to cut the cables according to the actual distance; Existing cable cutting usually uses a cutting saw blade. During the long-term use of the cutting saw blade, due to the influence of temperature and direct contact wear, the cutting edge of the cutting saw blade will gradually wear and become dull. As a result, in the subsequent process of cutting the cable, the cutting saw blade cannot cleanly cut the metal conductor and insulation layer of the cable, which further causes tearing and extrusion on the cutting end face of the cable, resulting in burrs on the cable cutting port, increasing the risk of the cable insulation layer being punctured. Since the insulation layer of medium-voltage cables is crucial for preventing electric leakage and ensuring the safety of power transmission, after the insulation layer is damaged, the insulation performance decreases, which further affects the normal operation of power equipment. Summary of the Invention

[0003] The purpose of the present invention is to provide a conductor truncating device with a positioning function for medium-voltage cables to solve the problems mentioned in the above process.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A conductor truncating device with a positioning function for medium-voltage cables, including a cutting component, a grinding groove is provided on the cutting component, a grinding sheet is clamped and slid in the grinding groove, a spring is provided on one side of the grinding sheet, and the end of the spring away from the grinding sheet is connected to the bottom of the grinding groove; A compression component is provided on the cutting component, two compression storage units are connected to the compression component, the compression component is internally communicated with the compression storage units, and the compression storage units can store the gas compressed by the compression component; A working table is provided in the area below the cutting component, a positioning component is provided on the upper surface of the working table, the positioning component can limit the cable to be cut, two cooling components are provided on the working table, the cooling components are internally communicated with the compression storage units, the gas stored in the compression storage units can be discharged through the cooling components, and an adsorption unit is further provided on the cooling components; The cooling component includes a fixed block and a negative pressure pipe arranged on the fixed block. The negative pressure pipe includes a low-pressure pipe and a high-pressure pipe. The inner pipe diameter of the low-pressure pipe part is smaller than that of the high-pressure pipe part. One end of the negative pressure pipe is provided with a connection cover, and an air jet pipe is arranged on the connection cover. The other end of the negative pressure pipe is provided with a serpentine pipe. The opening at the end of the serpentine pipe away from the negative pressure pipe faces the position of the area to be cut of the cable to be cut. The serpentine pipes in the two cooling components are symmetrically arranged obliquely on both sides of the cutting disc.

[0005] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: the positioning component includes a positioning plate, a positioning groove is formed on the positioning plate, one end of the positioning plate is hinged with a pressing plate, and an elastic buckle is arranged at the end of the positioning plate away from the pressing plate.

[0006] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: the compression component includes an eccentric wheel, an eccentric shaft is arranged at the eccentric position of the eccentric wheel, and an eccentric sleeve is rotatably arranged on the eccentric shaft.

[0007] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: the compression component further includes two compression cylinders, and two guide plates are arranged between the two compression cylinders.

[0008] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: a reciprocating rod is slidably arranged between the two guide plates. The reciprocating rod includes a middle block, a key groove is formed through the middle block, piston rods are symmetrically arranged at both ends of the middle block, and the ends of the piston rods away from the middle block penetrate through the guide plates and extend into the compression cylinders.

[0009] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: the compression storage unit includes a tank body, a pressure tank is arranged in the tank body, and the tank body and the pressure tank form a cooling cavity.

[0010] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: a moving plate is slidably arranged in the pressure tank. The moving plate divides the inner cavity of the pressure tank into a lower cavity and an upper cavity, and extreme position columns are arranged in the pressure tank.

[0011] As a preferred solution of the conductor truncation device with a positioning function for medium-voltage cables according to the present invention, wherein: air inlet holes are formed on both the pressure tank and the tank body, and the air inlet holes are located at the position of the lower cavity area of the pressure tank.

[0012] As a preferred embodiment of the conductor cutting device with positioning function for medium-voltage cables according to the present invention, the following is provided: air vents are provided on both the tank body and the pressure tank, the air vents are located at the upper cavity area of the pressure tank, a sliding groove is provided at the bottom of the air vent on the pressure tank, and a right-angle block is slidably arranged in the sliding groove.

[0013] As a preferred embodiment of the conductor cutting device with positioning function for medium-voltage cables according to the present invention, the following is provided: the adsorption unit includes an adsorption pipe, a filter box is arranged in the middle of the adsorption pipe, and a filter net is obliquely arranged in the filter box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By embedding abrasive sheets on both sides of the cutting blade, when the cutting blade cuts the cable, the abrasive sheets will polish the cutting port of the cable, thereby removing burrs and sharp edges at the cutting port, avoiding the risk that burrs will pierce the cable insulation layer during subsequent construction and operation, reducing the risk of safety accidents such as short circuits and electric leakage caused by insulation layer damage, and ensuring personal safety and the stable operation of the power system; 2. By setting a cooling component, during the cutting of the cable, compressed gas will be ejected from the nozzle of the serpentine pipe towards the cutting part of the cable. After the compressed gas is ejected from the serpentine pipe, it will undergo adiabatic expansion, so that the temperature of the ejected fluid is relatively low, thereby cooling the cutting blade, the abrasive sheet and the cutting part of the cable. This avoids the aggravation of wear of the cutting blade and the abrasive sheet due to excessive temperature during use, improves the service life of the cutting blade and the abrasive sheet, and at the same time improves the cutting effect of the cutting blade; 3. By vertically arranging an adsorption pipe on the negative pressure pipe, when the compressed gas is ejected at high speed from the nozzle of the air jet pipe, a low-pressure area will be generated at the nozzle of the air jet pipe, thereby generating negative pressure in the adsorption pipe, so as to attract the dust generated during cable cutting, avoiding dust accumulation after the device cuts too many cables, reducing the dust content in the cutting environment, reducing the risk of dust polluting the cable insulation layer, and ensuring the insulation performance of the cable. Description of the Drawings

[0015] Figure 1 It is a schematic front view structure diagram of the conductor cutting device with positioning function for medium-voltage cables according to the present invention.

[0016] Figure 2 It is a schematic rear view structure diagram of the conductor cutting device with positioning function for medium-voltage cables according to the present invention.

[0017] Figure 3 It is a schematic structure diagram of the grinding groove and the abrasive sheet of the conductor cutting device with positioning function for medium-voltage cables according to the present invention.

[0018] Figure 4 Schematic structural diagram of the positioning component of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0019] Figure 5 Schematic structural diagram of the overall cooling component of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0020] Figure 6 Schematic structural diagram of a partial half-section view of the cooling component of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0021] Figure 7 Schematic structural diagram of the compression component of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0022] Figure 8 Schematic structural diagram of a half-section view of the compression storage unit of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0023] Figure 9 For the conductor cutting device with positioning function for medium-voltage cables in the present invention Figure 8 Schematic enlarged structural diagram at position A.

[0024] Figure 10 Schematic sectional view of the filter box of the conductor cutting device with positioning function for medium-voltage cables in the present invention.

[0025] In the figure: 1. Cutting component; 11. Grinding groove; 12. Grinding sheet; 13. Operating table; 14. Positioning plate; 141. Positioning groove; 15. Pressing plate; 16. Elastic buckle; 2. Compression component; 21. Eccentric wheel; 22. Eccentric sleeve; 23. Guide plate; 24. Compression cylinder; 25. Middle section block; 26. Piston rod; 3. Compression storage unit; 31. Tank body; 32. Pressure tank; 321. Lower cavity; 322. Upper cavity; 323. Extreme limit column; 33. Cooling cavity; 34. Moving plate; 35. Air inlet hole; 36. Air outlet hole; 37. Sliding groove; 38. Right-angle block; 4. Cooling component; 41. Fixed block; 42. Negative pressure pipe; 43. Connecting cover; 44. Jet pipe; 45. Serpentine pipe; 46. Adsorption unit; 47. Adsorption pipe; 48. Filter box; 49. Filter net. Detailed implementation manners

[0026] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm proposed below, but covers any modification, replacement, and improvement of elements, components, and algorithms without departing from the spirit of the present invention. In the drawings and the following description, well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present invention. Embodiment 1

[0027] Referring to Figures 1-7 , for the first embodiment of the present invention, a conductor cutting device with a positioning function for medium-voltage cables is provided. This conductor cutting device with a positioning function for medium-voltage cables includes a cutting assembly 1. The cutting assembly 1 includes a lifting table. A cutting groove is provided in the middle area of the lifting table. A shaft seat is provided on the upper surface of the lifting table. A cutting blade is provided in the cutting groove. A rotating shaft is provided at the center of the cutting blade. The cutting blade is provided in the middle area of the rotating shaft. The rotating shaft can rotate synchronously with the cutting blade. The rotating shaft is rotatably provided on the shaft seat; A machine base is provided on the lifting table. The machine base is provided on one side of the shaft seat. A motor is bolted to the machine base. The output shaft of the motor is coaxially connected to the rotating shaft. The rotation of the output shaft of the motor can drive the rotating shaft and the cutting blade to rotate synchronously. The outer contour of the cutting blade can penetrate through the cutting groove and extend to the lower area position of the lifting table. The cutting blade is preferably made of high-speed steel; Linear plates are symmetrically provided at both ends of the lifting table. The linear plates are perpendicular to the lifting table. A top plate is provided at the upper end of the linear plate. The lifting table is slidably connected to the linear plate. A telescopic cylinder is provided at one end of the linear plate close to the top plate. The piston end of the telescopic cylinder is connected to the lifting table. The telescopic movement of the piston end of the telescopic cylinder can drive the lifting table to shift along the linear plate. A grinding groove 11 is provided on the cutting assembly 1. A grinding blade 12 is engaged and slidable in the grinding groove 11. The grinding groove 11 is symmetrically provided on both sides of the cutting blade. The grinding blade 12 is provided on both sides of the cutting blade. A spring is provided on one side of the grinding blade 12. The end of the spring away from the grinding blade 12 is connected to the bottom of the grinding groove 11. The grinding blade 12 can only slide horizontally in the grinding groove 11 under the action of the spring force. And a rounded corner is provided at the edge of the grinding blade 12. The port of the cable cut by the cutting blade can be smoothly transitioned from the side of the cutting blade to the surface of the grinding blade 12. Under the action of the spring force, the grinding blade 12 can be in close contact with the cutting port of the cable to polish and remove the burrs on the cutting port of the cable; A compression component 2 is provided on the cutting component 1. Two compression storage units 3 are connected to the compression component 2. The compression component 2 and the compression storage units 3 are internally connected. The compression storage units 3 can store the gas compressed by the compression component 2. The compression component 2 is provided on one side of the upper surface of the lifting platform, and the compression storage units 3 are symmetrically arranged on the upper surface of the lifting platform. An operating table 13 is provided at the position below the cutting component 1. One end of the linear plate away from the top plate is connected to the operating table 13. A relief groove is provided in the middle of the operating table 13. The position of the relief groove coincides with that of the cutting groove. The relief groove penetrates through the operating table 13. A collection box is slidably arranged on the lower surface of the operating table 13. The collection box is located directly below the relief groove. The bottom of the collection box is made of a filter screen. Part of the waste chips generated during the cutting of the cable will enter the collection box under the action of gravity and fluid. The filter screen is used to intercept the waste chips and allow the fluid to pass through, preventing the fluid from driving the waste chips inside the collection box to fly. A positioning component is provided on the upper surface of the operating table 13. The positioning components are symmetrically arranged at both ends of the relief groove. The positioning components can limit the cable to be cut. Two cooling components 4 are provided on the operating table 13. The cooling components 4 are internally connected to the compression storage units 3. The gas stored inside the compression storage units 3 can be discharged through the cooling components 4. An adsorption unit 46 is also provided on the cooling components 4. The cooling component 4 includes a fixed block 41 and a negative pressure pipe 42 provided on the fixed block 41. The fixed block 41 is provided on the upper surface of the operating table 13. An installation hole is provided in the middle of the fixed block 41. The negative pressure pipe 42 is arranged in the installation hole. The negative pressure pipe 42 includes a low-pressure pipe and a high-pressure pipe. The inner diameter of the low-pressure pipe part is smaller than that of the high-pressure pipe part. An arc chamfer is provided at the connection between the low-pressure pipe and the high-pressure pipe to reduce the resistance suffered by the fluid when passing from the low-pressure pipe into the high-pressure pipe. One end of the negative pressure pipe 42 is provided with a connection cover 43. The connection cover 43 is arranged at one end of the low-pressure pipe. A jet pipe 44 is provided on the connection cover 43. The jet pipe 44 extends into the interior of the low-pressure pipe, and the inner diameter of the jet pipe 44 gradually decreases towards one end of the low-pressure pipe. The other end of the negative pressure pipe 42 is provided with a serpentine pipe 45. The opening of the end of the serpentine pipe 45 away from the negative pressure pipe 42 faces the position of the area to be cut of the cable to be cut. The serpentine pipes 45 in the two cooling components 4 are symmetrically arranged obliquely on both sides of the cutting blade. The serpentine pipe 45 is a pipe with a shape similar to a snake body and consists of multiple segments that can be movably connected. It can be bent into various shapes to control the flow of fluid in the pipe and achieve the cooling function for specific parts.

[0028] The positioning component includes a positioning plate 14, on which a positioning groove 141 is formed. One end of the positioning plate 14 is hingedly provided with a pressing plate 15, and an elastic buckle 16 is arranged at the end of the positioning plate 14 away from the pressing plate 15. A pressing groove matching the outer contour of the positioning groove 141 is arranged on the pressing plate 15. The positioning groove 141 and the pressing plate 15 are used to limit the cable to be cut, and the elastic buckle 16 is used to position the cable to be cut. The pressing plate 15 and the positioning plate 14 can be connected by bolts.

[0029] During the use process, first place the cable to be cut in the positioning groove 141, then clamp the cable on the elastic buckle 16, stretch the cable in the middle part of the two positioning plates 14 to an appropriate tension, and then rotate the pressing plate 15 and twist the bolt. At this time, the cable will be positioned and fixed; At this time, start the motor. The output shaft of the motor rotates and drives the cutting blade to rotate. The grinding blade 12 on the cutting blade rotates synchronously with the cutting blade. Then start the telescopic cylinder, causing the piston end of the telescopic cylinder to gradually extend and push the lifting platform. Then the rotating cutting blade will gradually move towards the cable. When the cutting edge of the cutting blade contacts the cable, the cable will be cut by the cutting blade. When the cutting blade cuts a cable into two sections, as the telescopic cylinder pushes the lifting platform, the port of the cable cut by the cutting blade will contact the surface of the grinding blade 12. At this time, the grinding blade 12 rotating with the cutting blade will polish the port of the cut cable, thereby removing the burrs at the port of the cut cable; By adjusting the opening at the end of the snake-shaped tube 45 away from the negative pressure tube 42 to face the cut part of the cable, when the compressed gas is ejected from the nozzle of the air injection pipe 44 and ejected through the snake-shaped tube 45 to the cutting part of the cable, the high flow rate of the compressed gas will accelerate the air flow rate at the cutting part of the cable, thereby reducing the temperature of the cable during cutting and grinding. At the same time, when the compressed gas is discharged, the compressed gas will undergo adiabatic expansion. Since the discharge process of the compressed gas is usually relatively fast and the gas has no time to exchange heat significantly with the surrounding environment, during the adiabatic expansion process, the gas has no heat exchange with the outside and does external work, resulting in a decrease in its own internal energy, thereby reducing the temperature of the discharged gas. By spraying low-temperature gas towards the cutting part of the cable, the cable, the cutting blade, and the grinding blade 12 can be cooled.

[0030] Then control the piston end of the telescopic cylinder to contract. At this time, the lifting platform and the cutting blade will gradually return to their original positions. Embodiment 2

[0031] Refer to Figures 1-9 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is: The compression assembly 2 includes an eccentric wheel 21. An eccentric shaft is provided at the eccentric position of the eccentric wheel 21. An eccentric sleeve 22 is rotatably provided on the eccentric shaft. The eccentric wheel 21 is coaxially connected to the rotating shaft, and the eccentric wheel 21 is provided at the end of the rotating shaft away from the motor. The eccentric shaft is provided on the side of the eccentric wheel 21 away from the cutting disc. A rectangular groove is formed on the side of the lifting table away from the motor.

[0032] The compression assembly 2 further includes two compression cylinders 24. Two guide plates 23 are provided between the two compression cylinders 24. The compression cylinders 24 are provided on the upper surface of the lifting table, and the rectangular groove is located in the middle area between the two compression cylinders 24. The two guide plates 23 are symmetrically provided in the rectangular groove, and the eccentric wheel 21 is located between the two guide plates 23.

[0033] A reciprocating rod is slidably provided between the two guide plates 23. The reciprocating rod includes a middle section block 25. A key groove is formed through the middle section block 25. Two piston rods 26 are symmetrically provided at both ends of the middle section block 25. One end of the piston rod 26 away from the middle section block 25 penetrates through the guide plate 23 and extends into the compression cylinder 24. The eccentric sleeve 22 is slidably provided in the key groove. The piston rod 26 is slidably connected to the guide plate 23. One end of the piston rod 26 away from the middle section block 25 is provided with a piston plate. The piston plate is slidably provided in the compression cylinder 24. A check valve I is provided at the end of the compression cylinder 24 away from the piston rod 26. External gas can enter the compression cylinder 24 through the check valve I. A compression air pipe is also provided on the surface of the compression cylinder 24 where the check valve I is provided. The compression air pipe is communicated with the inside of the compression cylinder 24. The end of the compression air pipe away from the compression cylinder 24 is connected to the compression storage unit 3.

[0034] The compression storage unit 3 includes a tank body 31. A pressure tank 32 is provided inside the tank body 31. The tank body 31 and the pressure tank 32 form a cooling cavity 33. An opening is provided at the top of the tank body 31. A cap is threadedly connected to the opening. The cap can block and close the opening on the tank body 31. Coolant is poured into the cooling cavity 33. Rotating the cap can open the opening at the top of the tank body 31, and the coolant can enter the cooling cavity 33 through the opening. Fins are arrayed on the outer side wall of the tank body 31.

[0035] A moving plate 34 is slidably provided inside the pressure tank 32. The moving plate 34 divides the inner chamber of the pressure tank 32 into a lower chamber 321 and an upper chamber 322. A limit post 323 is provided inside the pressure tank 32. The limit post 323 is provided in the upper chamber 322. Helium is filled in the upper chamber 322. The volume of the upper chamber 322 is larger than that of the lower chamber 321. The compression cylinder 24 is internally communicated with the lower chamber 321. The limit post 323 can limit the position of the moving plate 34.

[0036] An air inlet hole 35 is provided on both the pressure tank 32 and the tank body 31, and the positions of the air inlet holes 35 on the pressure tank 32 and the tank body 31 coincide with each other. The air inlet hole 35 is located in the lower cavity 321 area of the pressure tank 32. A pressure relief groove is also provided on both the pressure tank 32 and the tank body 31, and the positions coincide with each other. A pressure relief cover is threadedly connected to the pressure relief groove. After the pressure relief cover is unscrewed from the pressure relief groove, the compressed gas inside the lower cavity 321 can be discharged through the pressure relief groove. The end of the compressed air pipe far from the compression cylinder 24 passes through the air inlet hole 35 and is connected to the pressure tank 32. A check valve II is provided at the connection between the compressed air pipe and the pressure tank 32, so that the gas inside the lower cavity 321 cannot flow back into the compression cylinder 24 through the compressed air pipe.

[0037] An air outlet hole 36 is provided on both the tank body 31 and the pressure tank 32, and the positions of the air outlet holes 36 on the pressure tank 32 and the tank body 31 coincide with each other. The air outlet hole 36 is located in the upper cavity 322 area of the pressure tank 32. A sliding groove 37 is provided at the bottom of the air outlet hole 36 on the pressure tank 32. A right-angle block 38 is slidably arranged in the sliding groove 37. A pressure relief air pipe is provided in the air outlet hole 36. The end of the pressure relief air pipe far from the air outlet hole 36 is connected to the connection cover 43. The gas inside the lower cavity 321 can be transported to the connection cover 43 through the pressure relief air pipe and discharged through the jet pipe 44. The sliding groove 37 is internally communicated with the upper cavity 322, and the air outlet hole 36 communicates with the sliding groove 37. A strong magnet block I is provided at the upper end of the sliding groove 37. A strong magnet block II is embedded at one end of the right-angle block 38 close to the strong magnet block I, and the mutually approaching ends of the strong magnet block I and the strong magnet block II are of the same pole. Under the action of the mutually repulsive magnetic force of the same pole between the strong magnet block I and the strong magnet block II, the right-angle block 38 will be pushed to block the air outlet hole 36. The moving plate 34 is located at the lower end of the right-angle block 38, and the moving plate 34 can contact the right-angle block 38.

[0038] During the use process, when the motor is started, the output shaft of the motor starts to rotate, and then the output shaft of the motor will drive the rotating shaft and the eccentric wheel 21 to rotate. At this time, the eccentric sleeve 22 follows the eccentric shaft to make a circular motion around the center of the eccentric wheel 21. Since the eccentric sleeve 22 is slidably arranged in the key groove and the piston rod 26 is slidably connected to the guide plate 23, when the eccentric shaft is displaced, the eccentric sleeve 22 rotates, and at the same time, the eccentric shaft applies a force to the middle block 25 through the eccentric sleeve 22, so that the middle block 25 makes a reciprocating linear motion; During the process of the middle block 25 making a reciprocating linear motion, the middle block 25 will continuously push and pull the piston rod 26, so that the piston rod 26 drives the piston plate to reciprocate in the compression cylinder 24. The gas outside the compression cylinder 24 can enter the inside of the compression cylinder 24 through the check valve I. The gas entering the compression cylinder 24 can enter the lower cavity 321 in the pressure tank 32 through the compressed air pipe under the pushing and compressing action of the piston plate; As the gas in the compression cylinder 24 continuously enters the interior of the lower chamber 321, the gas pressure inside the lower chamber 321 continues to increase. At this time, the moving plate 34 will shift in the direction of the upper chamber 322 under the pushing force of the gas pressure. At this time, the helium gas inside the upper chamber 322 is continuously compressed, the volume of the upper chamber 322 gradually decreases, and the volume inside the lower chamber 321 gradually increases; When the moving plate 34 is pushed by the compressed gas inside the lower chamber 321 until it contacts the right-angle block 38, the moving plate 34 will push the right-angle block 38, causing the right-angle block 38 to shift so that it no longer blocks the air outlet 36. At this time, the compressed gas inside the lower chamber 321 can flow through the pressure relief air pipe to the connection cover 43 and finally be discharged from the port of the jet pipe 44. When the device is used up, by twisting the pressure relief cover and taking out the pressure relief cover from the pressure relief groove, the compression inside the lower chamber 321 can be discharged through the pressure relief groove. At the same time, the moving plate 34 will reset under the action of the gas pressure in the upper chamber 322. At this time, the right-angle block 38 will reset under the repulsive magnetic force between the first strong magnet block and the second strong magnet block and re-block the air outlet 36.

[0039] The remaining structures are the same as those in Embodiment 1. Embodiment 3

[0040] Refer to Figures 1-10 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is: The adsorption unit 46 includes an adsorption pipe 47. A filter box 48 is provided in the middle of the adsorption pipe 47. A filter net 49 is inclinedly arranged in the filter box 48. The adsorption pipe 47 is vertically arranged on the negative pressure pipe 42 and is arranged at the area position of the low-pressure pipe. The adsorption pipe 47 communicates with the inside of the negative pressure pipe 42. A gas collecting hood is provided at one end of the adsorption pipe 47 away from the negative pressure pipe 42.

[0041] During use, when the compressed gas enters the low-pressure pipe through the jet pipe 44 and continues to flow in the direction of the high-pressure pipe, the high-speed gas ejected from the nozzle of the jet pipe 44 will form a low-pressure area in the nozzle area of the jet pipe 44, causing the gas outside the negative pressure pipe 42 to enter the negative pressure pipe 42 through the adsorption pipe 47, and the gas entering the negative pressure pipe 42 will be discharged from the snake-shaped pipe 45 following the high-speed gas; When the cutting piece cuts the cable and the grinding piece 12 grinds the cutting port of the cable, the generated dust will be subjected to the air flow traction force at the gas collecting hood, causing the attracted dust to enter the filter box 48 through the adsorption pipe 47. Then the air flow passes through the filter net 49 and flows into the negative pressure pipe 42, and the dust entering the filter box 48 following the air flow will be blocked by the filter net 49 in the filter box 48.

[0042] The remaining structures are the same as those in Embodiment 2.

[0043] The different technical features that appear in different embodiments can be combined to achieve beneficial effects. Based on the study of the drawings, the description, and the claims, those skilled in the art should be able to understand and implement other variations of the disclosed embodiments. In the claims, the term "comprising" does not exclude other devices or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to denote names and not to indicate any particular order. Any reference signs in the claims should not be construed as limiting the scope of protection. The functions of multiple parts that appear in the claims can be implemented by a single hardware or software module. The fact that certain technical features appear in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A conductor cutting device with a positioning function for a medium voltage cable, comprising a cutting assembly (1), characterized in that: The cutting assembly (1) is provided with a grinding groove (11), a grinding sheet (12) is slidably engaged in the grinding groove (11), a spring is provided on one side of the grinding sheet (12), and one end of the spring away from the grinding sheet (12) is connected to the bottom of the grinding groove (11); The cutting assembly (1) is provided with a compression assembly (2), the compression assembly (2) is connected to two compression storage units (3), the compression assembly (2) is internally connected to the compression storage unit (3), and the compression storage unit (3) can store gas compressed by the compression assembly (2); An operating table (13) is provided at a position below the cutting component (1); a positioning component is provided on the upper surface of the operating table (13); the positioning component can limit the position of the cable to be cut; two cooling components (4) are provided on the operating table (13); the cooling components (4) are connected to the inside of the compression storage unit (3); the gas stored in the compression storage unit (3) can be discharged through the cooling components (4); and an adsorption unit (46) is also provided on the cooling component (4); The cooling assembly (4) comprises a fixing block (41) and a negative pressure tube (42) arranged on the fixing block (41), the negative pressure tube (42) comprising a low pressure tube and a high pressure tube, the inner tube diameter of the low pressure tube portion is smaller than the inner tube diameter of the high pressure tube portion, a connecting cover (43) is arranged at one end of the negative pressure tube (42), an air injection tube (44) is arranged on the connecting cover (43), a serpentine tube (45) is arranged at the other end of the negative pressure tube (42), an opening of the serpentine tube (45) at one end away from the negative pressure tube (42) faces the position of the to-be-cut area of ​​the cable to be cut, and the serpentine tubes (45) in the two cooling assemblies (4) are arranged obliquely symmetrically on both sides of the cutting blade.

2. The conductor cutting device with positioning function for medium voltage cable according to claim 1, characterized in that: The positioning assembly comprises a positioning plate (14), a positioning groove (141) is provided on the positioning plate (14), a pressing plate (15) is hingedly provided at one end of the positioning plate (14), and an elastic buckle (16) is provided at one end of the positioning plate (14) away from the pressing plate (15).

3. The conductor cutting device with positioning function for medium voltage cable according to claim 1, characterized in that: The compression assembly (2) comprises an eccentric wheel (21), an eccentric shaft is provided at an eccentric position of the eccentric wheel (21), and an eccentric sleeve (22) is rotatably provided on the eccentric shaft.

4. The conductor cutting device with positioning function for medium voltage cable according to claim 1, characterized in that: The compression assembly (2) further comprises two compression cylinders (24), and two guide plates (23) are arranged between the two compression cylinders (24).

5. The conductor cutting device with positioning function for medium voltage cable according to claim 4, characterized in that: A reciprocating rod is slidably arranged between the two guide plates (23), and the reciprocating rod comprises a middle section block (25). A key slot is formed through the middle section block (25), and piston rods (26) are symmetrically arranged at both ends of the middle section block (25). One end of the piston rod (26) away from the middle section block (25) passes through the guide plate (23) and extends into the compression cylinder (24).

6. The conductor cutting device with positioning function for medium voltage cable according to claim 1, characterized in that: The compression storage unit (3) comprises a tank body (31), a pressure tank (32) is arranged inside the tank body (31), and the tank body (31) and the pressure tank (32) form a cooling chamber (33).

7. The conductor cutting device with positioning function for medium voltage cable according to claim 6, characterized in that: A movable plate (34) is slidably arranged inside the pressure tank (32), and the movable plate (34) divides the internal chamber of the pressure tank (32) into a lower chamber (321) and an upper chamber (322). A limit position column (323) is arranged inside the pressure tank (32).

8. The conductor cutting device with positioning function for medium voltage cable according to claim 7, characterized in that: The pressure tank (32) and the tank body (31) are both provided with an air inlet hole (35), and the air inlet hole (35) is located in the lower chamber (321) area of ​​the pressure tank (32).

9. The conductor cutting device with positioning function for medium voltage cable according to claim 8, characterized in that: The tank body (31) and the pressure tank (32) are both provided with an air outlet hole (36), the air outlet hole (36) being located in the upper chamber (322) region of the pressure tank (32), and a sliding groove (37) is provided at the bottom of the air outlet hole (36) on the pressure tank (32), and a right-angle block (38) is slidably arranged in the sliding groove (37).

10. The conductor cutting device with positioning function for medium voltage cable according to claim 1, characterized in that: The adsorption unit (46) comprises an adsorption tube (47), a filter box (48) is arranged in the middle of the adsorption tube (47), and a filter screen (49) is arranged in an inclined manner in the filter box (48).

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