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CN-122007508-A - Pneumatic cutting device

CN122007508ACN 122007508 ACN122007508 ACN 122007508ACN-122007508-A

Abstract

The invention relates to the technical field of cutting machines, in particular to a pneumatic cutting device. The pneumatic cutting device comprises a high-pressure air pressure adjusting structure, a power switching structure and a cutting structure, wherein the power switching structure is provided with a first air flow chamber and a second air flow chamber, the first air flow chamber and the second air flow chamber are oppositely arranged, the first air flow chamber and the second air flow chamber are communicated with the high-pressure air pressure adjusting structure, the cutting structure is partially arranged in the first air flow chamber, the cutting structure is partially arranged in the second air flow chamber, and the cutting structure can be selectively pushed to move by air flow in the first air flow chamber or the second air flow chamber. The pneumatic cutting device uses air flow as power to realize cutting, and therefore, no matter how far or near the power switching structure is from the high-pressure air pressure adjusting structure, the pneumatic cutting device has enough power to cut.

Inventors

  • LIANG CHENGCAI
  • YANG SIXIN
  • CUI TAO
  • ZHANG XIAOYUN
  • FU ZHONGMING
  • YU YI
  • MIAO YUSHENG
  • ZHENG ZHENG

Assignees

  • 山东核电有限公司

Dates

Publication Date
20260512
Application Date
20260224

Claims (10)

  1. 1. The utility model provides a pneumatic cutting device, includes high-pressure air pressure regulation structure (1), power switching structure (2) and cutting structure, its characterized in that, power switching structure (2) have first air current cavity (21) and second air current cavity (22), first air current cavity (21) with second air current cavity (22) set up relatively, first air current cavity (21) with second air current cavity (22) all with high-pressure air pressure regulation structure (1) intercommunication, cutting structure part set up in first air current cavity (21), part set up in second air current cavity (22), cutting structure can be by the air current promotion in one of them air current cavity in first air current cavity (21) and second air current cavity (22) moves to another air current cavity direction.
  2. 2. A pneumatic cutting device according to claim 1, wherein the power switching structure (2) further has a communication channel (23) and a first air inlet channel (24), the communication channel (23) being in communication with the first air inlet channel (24), a first end of the communication channel (23) being in communication with the first air flow chamber (21), a second end of the communication channel (23) being in communication with the second air flow chamber (22).
  3. 3. A pneumatic cutting device according to claim 2, characterized in that the cutting structure comprises a cutter (4) and a paddle (3), the paddle (3) is movably connected with the power switching structure (2), the paddle (3) has a first position and a second position, when the paddle (3) is located at the first position, the paddle (3) shields the air inlet of the first air flow chamber (21) to release the air outlet of the first air flow chamber (21), when the paddle is located at the second position, the paddle (3) shields the air inlet of the second air flow chamber (22) to release the air outlet of the second air flow chamber (22), the cutter (4) is partially located in the first air flow chamber (21), and the cutter (4) can move to the other one of the first air flow chamber (21) and the second air flow chamber (22) after one of the air flows in.
  4. 4. A pneumatic cutting device according to claim 3, wherein the paddle (3) has a vent hole (311), the communication channel (23) being in communication with the first airflow chamber (21) through the vent hole (311) when the paddle (3) is in the first position, and the communication channel (23) being in communication with the second airflow chamber (22) through the vent hole (311) when the paddle (3) is in the second position.
  5. 5. A pneumatic cutting device according to claim 3 or 4, characterized in that the power switching structure (2) further has an opening (25) towards the foreign matter, the length extension of the opening (25) being co-directional with the extension of the cutting structure, the first air flow chamber (21) and the second air flow chamber (22) both communicating with the opening (25), the cutting portion of the knife (4) being located within the opening (25), the opening (25) being capable of accommodating at least part of the foreign matter.
  6. 6. A pneumatic cutting device according to claim 5, characterized in that the power switching structure (2) also has a raised portion (26) that raises foreign matter, the raised portion (26) being provided at the opening (25).
  7. 7. A pneumatic cutting device according to claim 3 or 4, wherein the first air flow chamber (21) comprises a first partial air inlet channel (211), a first air outlet channel (212) and a first reversing channel (213), wherein a first end of the first partial air inlet channel (211) is selectively communicated or disconnected from the vent hole (311) of the blade (3), a second end of the first partial air inlet channel (211) is communicated with a first end of the first reversing channel (213), a first end of the first air outlet channel (212) is communicated with the first partial air inlet channel (211), and a connection of the first air outlet channel (212) and the first partial air inlet channel (211) is located between the first end of the first air outlet channel (212) and a second end of the first air outlet channel (212), the second end of the first air outlet channel (212) is communicated with a second end of the first reversing channel (213), and/or, The second airflow chamber (22) comprises a second sub air inlet channel (221), a second air outlet channel (222) and a second reversing channel (223), wherein a first end of the second sub air inlet channel (221) is selectively communicated with or disconnected from the vent hole (311), a second end of the second sub air inlet channel (221) is communicated with a first end of the second reversing channel (223), a first end of the second air outlet channel (222) is communicated with the second sub air inlet channel (221), and a connecting part of the second sub air inlet channel (221) and the second air outlet channel (222) is positioned between the first end of the second sub air inlet channel (221) and the second end of the second sub air inlet channel (221), and a second end of the second air outlet channel (222) is communicated with a second end of the second reversing channel (223).
  8. 8. A pneumatic cutting device according to claim 7, wherein the second end of the first partial air inlet channel (211) is arranged opposite to the second end of the second partial air inlet channel (221), the first end of the knife (4) is located in the first partial air inlet channel (211), the second end of the knife (4) is located in the second partial air inlet channel (221), and the knife (4) is capable of selectively blocking the first end of the first reversing channel (213) or the first end of the second reversing channel (223).
  9. 9. The pneumatic cutting device according to claim 7, wherein the first air flow chamber (21) further comprises a first air discharge channel (214), the second air flow chamber (22) further comprises a second air discharge channel (224), the first air discharge channel (214) communicates the second end of the first reversing channel (213) with the outside atmosphere, the second air discharge channel (224) communicates the second end of the second reversing channel (223) with the outside atmosphere, the first air discharge channel (214) and the second air discharge channel (224) can be selectively blocked by the paddle (3).
  10. 10. A pneumatic cutting device according to claim 3 or 4, characterized in that the cutting structure further comprises an elastic limiting member (5), one end of the elastic limiting member (5) is fixedly connected with the channel wall of the first air inlet channel (24) or the channel wall of the communication channel (23), the other end is fixedly connected with the poking piece (3), and/or, The cutting structure further comprises a stop air bag (6), and the stop air bag (6) is fixedly connected with one end part of the power switching structure (2).

Description

Pneumatic cutting device Technical Field The invention relates to the technical field of cutting machines, in particular to a pneumatic cutting device. Background If foreign matters fall between heat transfer tubes of a steam generator of a nuclear power plant, the foreign matters vibrate under the action of water flow, so that the heat transfer tubes are worn, and the primary circuit pressure boundary of the nuclear power unit is threatened. Because the interval of the heat transfer tubes is generally very small and is only a few millimeters, the probability of foreign matter jamming is very high, and the foreign matter is usually required to be grasped after being cut in the foreign matter grasping work. The structure of the existing foreign matter cutting tool is generally complex, and long-distance mechanical operation is easy to cause problems in the tool. Disclosure of Invention In one aspect of the present invention, a pneumatic cutting device is provided to solve the problem of long-distance mechanical operation easy tool occurrence. The invention provides a pneumatic cutting device which comprises a high-pressure air pressure adjusting structure, a power switching structure and a cutting structure, wherein the power switching structure is provided with a first airflow chamber and a second airflow chamber, the first airflow chamber and the second airflow chamber are oppositely arranged, the first airflow chamber and the second airflow chamber are communicated with the high-pressure air pressure adjusting structure, the cutting structure is partially arranged in the first airflow chamber, and the cutting structure is partially arranged in the second airflow chamber and can be pushed by airflow in one airflow chamber of the first airflow chamber and the second airflow chamber to move towards the other airflow chamber. On the basis of the technical scheme, optionally, the power switching structure is further provided with a communication channel and a first air inlet channel, the communication channel is communicated with the first air inlet channel, a first end of the communication channel is communicated with the first air flow chamber, and a second end of the communication channel is communicated with the second air flow chamber. On the basis of the technical scheme, optionally, the cutting structure comprises a cutter and a poking plate, the poking plate is movably connected with the power switching structure, the poking plate is provided with a first position and a second position, when the poking plate is positioned at the first position, the poking plate shields the air inlet of the first air flow chamber to release the air outlet of the first air flow chamber, when the poking plate is positioned at the second position, the poking plate shields the air inlet of the second air flow chamber to release the air outlet of the second air flow chamber, the cutter part is arranged in the first air flow chamber, and the cutter can move to the other one of the first air flow chamber and the second air flow chamber after one of the first air flow chamber and the second air flow chamber is introduced with air flow. On the basis of the technical scheme, optionally, the poking piece is provided with a vent hole, when the poking piece is positioned at the first position, the communication channel is communicated with the first airflow chamber through the vent hole, and when the poking piece is positioned at the second position, the communication channel is communicated with the second airflow chamber through the vent hole. On the basis of the above technical scheme, optionally, the power switching structure is further provided with an opening facing the foreign matter, the length extending direction of the opening is in the same direction as the extending direction of the cutting structure, the first airflow chamber and the second airflow chamber are communicated with the opening, the cutting part of the cutter is positioned in the opening, and at least part of the foreign matter can be accommodated in the opening. On the basis of the technical scheme, optionally, the power switching structure is further provided with a lifting part for lifting the foreign matters, and the lifting part is arranged at the opening. On the basis of the above technical solution, optionally, the first airflow chamber includes a first sub-inlet channel, a first outlet channel and a first reversing channel, a first end of the first sub-inlet channel is selectively communicated with or disconnected from the vent hole of the paddle, a second end of the first sub-inlet channel is communicated with a first end of the first reversing channel, a first end of the first outlet channel is communicated with the first sub-inlet channel, and a connection part of the first outlet channel and the first sub-inlet channel is located between the first end of the first outlet channel and the second end of the first outlet channel, and a second end of