CN112317932A

CN112317932A - Plasma punching cutting machine special for injection pipe of LLP type dust remover

Info

Publication number: CN112317932A
Application number: CN201910714527.3A
Authority: CN
Inventors: 刘皓; 孙同海; 蒋雅林
Original assignee: Qianjiang Dust Removal Equipment Co ltd
Current assignee: Hubei Tianguan Environmental Protection Engineering Technology Co.,Ltd.
Priority date: 2019-08-04
Filing date: 2019-08-04
Publication date: 2021-02-05

Abstract

The plasma punching and cutting machine special for the injection pipe of the LLP type dust remover comprises a support and a supporting platform arranged on a ring beam, a rail seat and a rail seat are arranged on the supporting platform, two guide rails are arranged on the rail seat and the rail seat, a four-wheel traveling platform is arranged on the two guide rails, a PLC control box controls a first synchronous motor and a first rack of a driving gear, the first synchronous motor drives the four-wheel traveling platform to travel forwards and backwards, a transverse moving arm is arranged in the middle of the four-wheel traveling platform, the PLC control box controls a first synchronous motor which drives the transverse moving arm to move leftwards and rightwards, a lifting device and a lifting adjusting arm which lift up and down are arranged at the right end of the transverse moving arm, and the PLC control box controls the lifting adjusting arm to drive a plasma cutting gun to lift and move through a; the ring beam is provided with a left guide rail and a right guide rail, the lifting support pulley is arranged on the left guide rail and the right guide rail through a roller, the rear part of the lifting support pulley at the rear end is provided with a three-jaw fastening wheel seat, and the upper part of the front end of the three-jaw fastening wheel seat is provided with a three-jaw fastening wheel used for locking jetting tubes with different diameters.

Description

Plasma punching cutting machine special for injection pipe of LLP type dust remover

Technical Field

The invention belongs to the technical field of the matching production of dust removing equipment, and particularly relates to the technical field of the production of an injection pipe of a matching set for injecting and deashing of a LLP type pulse bag dust remover.

Background

The injection pipe of the LLP type long-bag low-pressure pulse bag-type dust collector in the prior art adopts a bench drill drilling technology in the production process, the production efficiency is very low, the production efficiency of dust collector accessories is seriously influenced, and no good solution is provided for the defect.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a plasma perforating and cutting machine special for a blowing pipe of a LLP type dust remover controlled by a PLC (programmable logic controller), which comprises:

the first rack is parallel to the guide rails and horizontally arranged on one side of the upper end face of the rail seat; the plasma cutting device comprises a walking platform, wherein a group of four guide wheels (not marked) which are respectively arranged at the left side and the right side of a platform body at the bottom of the walking platform and respectively comprise a front guide wheel and a rear guide wheel are arranged at the left side and the right side of the platform body at the bottom of the walking platform, the four guide wheels are correspondingly arranged at the bottom of the walking platform in a one-to-one manner and are rotatably placed on a left guide rail and a right guide rail, a first synchronous motor which is axially arranged along the vertical direction is arranged at the bottom of the walking platform, a columnar gear which is arranged on a rotating shaft of the first synchronous motor is meshed with lateral teeth of a rack, a transverse moving arm is horizontally arranged in the middle part of the front end of the walking platform and is vertical to the direction of the guide rails, a lifting adjusting arm which can be lifted is arranged at the right end; a fourth synchronous motor, wherein a fourth synchronous motor shaft drives a driving gear, the driving gear drives a driven gear to rotate and drives a screw to rotate, and the screw drives a nut at the bottom of the lifting support arm to move left and right to drive the left lifting support arm and the right lifting support arm to ascend and descend; the track seat is fixed on the supporting platform through a locking screw, and the supporting platform is fixedly connected with the ring beam through brackets at the front end and the rear end; the ring beam is formed by welding a front cross beam, a rear cross beam, a left longitudinal beam, a middle longitudinal beam and a right longitudinal beam, the three longitudinal beams are parallel to each other and are horizontally arranged, a left wheel rail and a right wheel rail which are parallel to each other are respectively arranged on the middle longitudinal beam and the right longitudinal beam, a lifting support pulley is respectively arranged at the front end and the rear end of each wheel rail, a three-jaw fastening wheel seat is arranged at the rear part of the lifting support pulley at the rear end, three-jaw fastening wheels for locking different diameters are arranged at the upper part of the front end of each three-jaw fastening wheel seat, and the height of each three-; the PLC control box is electrically connected with the driving walking platform and respectively controls a longitudinal first synchronous motor and a transverse second synchronous motor which are arranged in the driving walking platform and a lifting third synchronous motor which is arranged in the driving lifting device, so that the movement of the electrode at the front, back, left, right, upper and lower three-dimensional positions is controlled; the PLC control box (5) controls the lifting of the left lifting support arm (17) and the right lifting support arm (171) by electrically connecting and controlling the forward and reverse rotation of a fourth synchronous motor of the lifting support pulley (31), and further controls the height of the supported blowing pipe; the PLC control box is connected with and controls an electromagnetic airflow valve of the plasma generator and an electrode (anode and electron emission gun cathode) switch of the plasma generator to generate plasma cutting flame through signals.

Preferably, the teeth of the first rack are positioned on the side face of the rack and are perpendicular to the horizontal plane, the bottom of the walking platform is provided with a synchronous motor, the first synchronous motor and the cylindrical gear on the power shaft are axially arranged along the vertical direction, and the cylindrical gear on the synchronous motor is meshed with the teeth on the first rack and used for driving the walking platform to move back and forth along the track.

Preferably, both sides level sets up two second group guide rails that are parallel to each other around the lower extreme of lateral shifting arm, the rail face of the second group guide rail is convex surface structure, the well lower part of walking platform rear end corresponds the below of the front and back position of two second group guide rails, the level is provided with lateral rotation's direction wheelset, the axial of direction wheelset sets up along the fore-and-aft direction level, direction wheelset rotates along the left and right sides direction and sets up and leads, the wheel face of direction wheelset is concave surface structure, the wheel face concave surface of direction wheelset sets up with the second group guide rail face convex surface is supporting.

Preferably, the second rack is parallel to the upper end face of the transverse moving arm and horizontally arranged on the upper end face of the transverse moving arm, teeth of the second rack are located on one side face of the rack and perpendicular to the upper end face of the transverse moving arm, the second synchronous motor and the cylindrical gear on the power shaft are axially arranged in the vertical direction, the cylindrical gear on the synchronous motor is meshed with the teeth of the second rack, and the second synchronous motor is fixed on the inner table body of the walking platform and used for driving the transverse moving arm to move in the left-right direction.

Preferably, the lifting arm is arranged in the lifting device, the left side of the lifting arm and the inner wall of the lifting device are of a convex-concave mosaic structure, the right side of the lifting arm is provided with a third rack along the vertical direction, the synchronous motor is horizontally arranged, the cylindrical gear is meshed with teeth of the third rack, the third synchronous motor is fixed in the lifting device, and the cylindrical gear drives the rack to drive the lifting arm to move up and down for driving the lifting arm to move along the vertical direction.

Preferably, the left side and the right side of the front side edge and the rear side edge of the two lifting support pulleys at the front end and the rear end are respectively provided with four rollers, and the four rollers are in one-to-one correspondence with the left wheel rail and the right wheel rail and are rotatably arranged.

Preferably, the lift support arm rotates respectively through the pivot with the lift support arm and alternately sets up on the saddle of two lift support coasters, the lower extreme of lift support arm rotates through the pivot and sets up on the inner wall of saddle, the bottom of lift support arm is rotated and is provided with the nut, nut and screw rod swivelling joint, the right side of screw rod is rotated and is set up on the support, and the right-hand member of screw rod is provided with driven gear, driven gear and driving gear engagement, fourth synchronous machine passes through fourth synchronous machine axle fixed connection with the driving gear, fourth synchronous machine sets up in the backup pad of saddle right-hand member.

Preferably, the left lifting arm and the right lifting lower part of the lifting support tackle at the rear end are provided with a three-jaw fastening wheel and a three-jaw fastening wheel seat in a linkage manner for horizontally clamping and locking the blowing pipe.

Has the advantages that: according to the plasma punching cutting machine special for the injection pipe of the LLP type dust remover, the plasma punching cutting technology special for the injection pipe controlled by the PLC is adopted, so that the punching precision and the hole opening speed of a product are greatly improved, the production efficiency of the injection pipe of a dust remover matching part is improved, and the plasma punching cutting machine has a good production and application prospect.

Drawings

FIG. 1 is a schematic perspective view of a plasma perforating and cutting machine dedicated to a blowing pipe of an LLP type dust collector;

FIG. 2 is a schematic perspective view of the elevating support carriage;

FIG. 3 is a schematic structural view showing a first rack disposed along the front-rear direction at the bottom of the traveling platform 4, a first synchronous motor axially disposed along the up-down direction, and a cylindrical gear on a motor shaft engaged with a side gear of the first rack;

fig. 4 is a schematic perspective view of a second rack and a second synchronous motor which are arranged in the middle of the front end of the walking platform 4 along the left-right direction and are meshed with teeth on the second rack through a columnar gear;

fig. 5 is a schematic perspective view of a three-dimensional structure in which a third rack and a third synchronous motor arranged in the vertical direction in the lifting device 9 are engaged with teeth on the second rack through a cylindrical gear.

In the figure, 1, a track seat; 2. a guide rail; 3. a first rack; 4. a walking platform; 5, a PLC control box; 6. a transverse moving arm; 7. a second rack; 8. a plasma generator; 9. a lifting device; 10. a lifting adjusting arm; 11. a three-jaw fastening wheel; 12. a three-jaw fastening wheel seat; 121. plasma cutting gun; 13. an electrode nozzle; 131. a blowing pipe; 14. a blowing hole; 15. a pinch roller; 16. a fourth synchronous motor; 17. a left lifting support arm; 171. a right lifting support arm; 18. a cross rotating shaft; 191. a nut; 20. rolling theory; 21. a right wheel rail; 22. a middle longitudinal beam; 220. a right stringer; 221. a left stringer; 222. a front cross member; 223. a rear cross member; 23. a left wheel rail; 24. a ring beam; 25. a support; 26. a support platform; 27. a screw; 271. a screw support plate; 28. a driven gear; 29. a driving gear; 30. a right support arm spindle; 31. lifting and supporting the pulley; 311. a first synchronous motor; 312. a second synchronous motor; 313. a third synchronous motor; 32. a cylindrical gear; 33. teeth; 34. a cable; 35. locking the screw rod; 36. and a third rack.

Detailed Description

The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the present invention is a plasma perforating and cutting machine for a blowing pipe of a LLP type dust collector shown in fig. 1 and 2, comprising:

the track comprises a track seat 1 and guide rails 2, wherein the two guide rails 2 are parallel to each other and horizontally arranged on the left side and the right side of the upper end surface of the track seat 1, the left side and the right side of the track seat 1 are fixed on a supporting platform 26 through screws 27, and a first rack 3 is parallel to the guide rails 2 and horizontally arranged on one side of the upper end surface of the track seat 1; the plasma cutting device comprises a walking platform 4, wherein a group of four guide wheels (not marked) is arranged on the left side and the right side of a platform body at the bottom of the walking platform 4, the front guide wheel and the rear guide wheel are respectively provided with four guide wheels, the four guide wheels are arranged at the bottom of the walking platform 4 in a one-to-one correspondence mode and are rotatably arranged at the bottom of the walking platform 2, a synchronous motor is arranged at the bottom of the walking platform 4 in the vertical direction, a columnar gear 32 arranged on a rotating shaft of the synchronous motor is meshed with lateral teeth of a rack 3, a transverse moving arm 6 is horizontally arranged in the middle of the front end of the walking platform 4 in a direction perpendicular to the guide rails 2, a lifting arm 10 capable of being adjusted in a lifting mode is arranged at the right end of the transverse moving arm 6 in the vertical direction, a plasma cutting spray gun 121 is fixed on the outer side of the lifting arm 10, an electrode nozzle; the rocker shaft of the rocker arm 16 is rotated to drive the driving gear 29, the driving gear 29 drives the driven gear 28 to rotate and drives the screw 27 to rotate, and the screw 27 drives the nut 191 at the bottom of the left lifting support arm 17 to move left and right to drive the left lifting support arm 17 and the right lifting support arm 171 to ascend and descend around the cross rotating shaft 18; the track seat 1 is fixed on a supporting platform 26 through a locking screw 41, and the supporting platform 26 is fixedly connected with the ring beam 24 through brackets 25 at the front end and the rear end; the ring beam 24 is formed by welding a front cross beam 222, a rear cross beam 222, a left longitudinal beam 221, a middle longitudinal beam 22 and a right longitudinal beam 22, the three longitudinal beams are parallel to each other and horizontally arranged, the middle longitudinal beam 22 and the right longitudinal beam 220 are respectively provided with a left wheel rail 23 and a right wheel rail 21 which are parallel to each other, a lifting support pulley 31 is respectively arranged at the front end and the rear end of each guide rail, four rollers 20 at the front side and the rear side of the bottom of the lifting support pulley 31 are rotatably arranged on the left wheel rail 23 and the right wheel rail 21, a three-jaw fastening wheel seat 12 is arranged at the rear part of the lifting support pulley 31 at the rear end, a three-jaw fastening wheel 11 for locking injection pipes with different diameters is arranged at the upper part of the front end of the three; the PLC control box 5 is electrically connected with the driving walking platform 4 and respectively controls a longitudinal first synchronous motor and a transverse second synchronous motor which are arranged in the driving walking platform and a third synchronous motor which is arranged in the driving lifting device 9, so that the movement of the electrode 13 in front, back, left, right, up and down three-dimensional positions is controlled; the PLC control box (5) controls the lifting of the left lifting support arm (17) and the right lifting support arm (171) by electrically connecting and controlling the forward and reverse rotation of a fourth synchronous motor of the lifting support pulley (31), and further controls the height of the supported blowing pipe; the PLC control box 5 is connected with and controls an electromagnetic airflow valve of the plasma generator 8, an anode of an electrode nozzle 13 of the plasma generator and a cathode switch of the plasma cutting gun 121 to generate plasma cutting flame through signals, and the electrode nozzle 13 of the plasma cutting spray gun is opposite to the upper end face of the blowing pipe 131 to cut a blowing hole 14.

Example one

The teeth 33 of the first rack 3 are located on the side of the rack and are perpendicular to the horizontal plane, the axial direction of the first synchronous motor 311 is perpendicular to the vertical direction, the fixing seat of the first synchronous motor 311 is fixedly arranged on the rack (not shown) at the bottom of the walking platform 4, and the cylindrical gear 32 on the shaft of the first synchronous motor 311 is meshed with the teeth 33 on the rack 3 and drives the walking platform 4 to move back and forth along the track 2.

Example two

The both sides level sets up two second group guide rails that are parallel to each other around the lower extreme of lateral shifting arm 6, the rail face of the second group guide rail is convex surface structure, the well lower part of 4 rear ends of walking platform corresponds the below of the front and back position of two second group guide rails, the level is provided with the direction wheelset that can transversely lead, the axial of direction wheelset sets up along the fore-and-aft direction level, direction wheelset rotates along left right direction and sets up and leads, the wheel face of direction wheelset is concave surface structure, the wheel face concave surface of direction wheelset sets up with the second group guide rail face convex surface is supporting.

EXAMPLE III

The second rack 7 is parallel to the upper end face of the transverse moving arm 6 and is horizontally arranged on the upper end face of the transverse moving arm 6, the teeth 33 of the second rack 7 are positioned on one side face of the rack and are perpendicular to the upper end face of the transverse moving arm 6, the second synchronous motor 312 is axially arranged along the vertical direction, the fixed seat of the second synchronous motor 312 is fixedly arranged on the inner table body of the walking platform 4, and the cylindrical gear 32 on the shaft of the second synchronous motor is meshed with the teeth 33 of the second rack 7 and drives the transverse moving arm 6 to move along the left-right direction.

Example four

The lifting arm 10 is arranged in the lifting device 9, the left side of the lifting arm 10 and the inner wall of the lifting device 9 are in a convex-concave embedded structure, the right side of the lifting arm 10 is provided with a third rack 46 along the vertical direction, a third synchronous motor (313) is horizontally and fixedly arranged on the lifting device (9), a cylindrical gear (32) on the shaft of the third synchronous motor (313) is meshed with teeth (33) of a third rack (36), and the cylindrical gear 32 drives the rack 33 and drives the lifting arm 10 to move along the vertical direction.

EXAMPLE five

A set of front and rear two rollers 20 are respectively arranged on the left and right of the front and rear sides of the two lifting support pulleys 31 at the front and rear ends, and the four rollers are rotatably arranged with the left wheel rail 23 and the right wheel rail 21 in a one-to-one correspondence manner.

EXAMPLE six

The left lifting support arm 17 and the right lifting support arm 171 are respectively and rotatably crossed on the saddle 19 of the two lifting support pulleys 31 through a rotating shaft 18, the lower end of the right lifting support arm 171 is rotatably arranged on the inner wall of the saddle 19 through a rotating shaft 30, the bottom end of the left lifting support arm 17 is rotatably provided with a nut 191, the nut 191 is rotatably connected with the screw 27, the right side of the screw 27 is rotatably arranged on a support 271, and the right end of screw 27 is provided with driven gear 28, driven gear 28 and driving gear 29 meshing, fourth synchronous machine 16 and driving gear 29 pass through fourth synchronous machine shaft fixed connection, and fourth synchronous machine sets up on backup pad 291 of saddle 19 right-hand member, and the effect of two lift support coasters 31 is to the jetting pipe of different pipe diameters, conveniently adjusts the height of the jetting pipe of processing, is convenient for press from both sides tight jetting pipe 131 through pinch roller 15, just processes jetting pipe 131.

EXAMPLE seven

The three-jaw fastening wheel 11 and the three-jaw fastening wheel seat 12 are arranged on the linkage supporting plate at the lower parts of the left lifting arm 17 and the right lifting arm 171 of the lifting supporting pulley 31 at the rear end, the three-jaw fastening wheel 11 and the three-jaw fastening wheel seat 12 are used for horizontally clamping and locking the blowing pipe 131, and after the blowing pipe 131 is horizontally locked, accurate positioning is provided for plasma drilling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to cover the technical scope of the present invention, the equivalent substitution or change according to the technical solution and the concept of the present invention within the technical scope of the present invention.

Claims

The plasma punching and cutting machine special for the injection pipe of the LLP type dust remover is characterized by comprising:

the guide rail comprises a rail seat (1) and guide rails (2), wherein the two guide rails (2) are parallel to each other and horizontally arranged on the left side and the right side of the upper end surface of the rail seat (1), and a rack (3) is parallel to the guide rails (2) and horizontally arranged on one side of the upper end surface of the rail seat (1);

the plasma cutting device comprises a walking platform (4), wherein a group of four guide wheels (not marked) is arranged on the left side and the right side of a platform body at the bottom of the walking platform (4), the four guide wheels are arranged at the front and the back of the walking platform, the four guide wheels are correspondingly arranged at the bottom of the walking platform (4) one by one and rotatably placed on a left guide rail (2) and a right guide rail (2), a synchronous motor which is axially arranged along the vertical direction is arranged at the bottom of the walking platform (4), a columnar gear (32) arranged on a rotating shaft of the synchronous motor is meshed with lateral teeth of a first rack (3), a transverse moving arm (6) is horizontally arranged in the middle of the front end of the walking platform (4) in a direction vertical to the guide rails (2), a lifting arm (10) capable of being adjusted in a lifting mode is arranged at the right end of the transverse moving arm (6) in a vertical direction to the transverse;

the track seat (1) is fixed on a supporting platform (26) through a locking screw (35), and the supporting platform (26) is fixedly connected with the ring beam (24) through brackets (25) at the front end and the rear end;

the ring beam (24) is formed by welding a front cross beam (222), a rear cross beam (223), a left longitudinal beam (221), a middle longitudinal beam (22) and a right longitudinal beam (220), the three longitudinal beams are parallel and horizontally arranged, a wheel rail (21) and a right wheel rail (23) which are parallel to each other are respectively arranged on the middle longitudinal beam (22) and the right longitudinal beam (220), a lifting support pulley (31) is respectively arranged at the front end and the rear end of each of the wheel rail (21) and the right wheel rail (23), a three-jaw fastening wheel seat (12) is arranged at the rear part of the lifting support pulley (31) at the rear end, three-jaw fastening wheels (11) used for locking blowing pipes with different diameters are arranged at the upper part of the front end of the three-jaw fastening wheel seat (12), and the height of the three-jaw fastening wheel seat (12);

the PLC control box (5) is electrically connected with the driving walking platform (4) and respectively controls a longitudinal first synchronous motor (311) and a transverse second synchronous motor (312) which are arranged in the driving walking platform (4) and a lifting third synchronous motor (313) which is arranged in the driving lifting device (9), so that the front-back, left-right, up-down and three-dimensional movement of the electrode (13) is controlled;

the PLC control box (5) controls the lifting of the left lifting support arm (17) and the right lifting support arm (171) by electrically connecting and controlling the forward and reverse rotation of a fourth synchronous motor of the lifting support pulley (31), and further controls the height of the supported blowing pipe.

The PLC control box (5) is connected with and controls an electromagnetic airflow valve of the plasma generator (8) and an electrode (13) switch of the plasma generator to generate plasma cutting flame through signals.
2. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: the teeth of the first rack (3) are positioned on the side face of the rack and are perpendicular to the horizontal plane, the bottom of the walking platform (4) is provided with a synchronous motor (31), the axial directions of cylindrical gears on the first synchronous motor (311) and the power shaft are arranged along the vertical direction, and a cylindrical gear (32) on the synchronous motor is meshed with teeth (33) on the rack (3).
3. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: the lower extreme front and back both sides level of lateral shifting arm (6) sets up two second group guide rails (not marking) that are parallel to each other, the rail surface of this second group guide rail is convex surface structure, the well lower part of walking platform (4) rear end corresponds the below of the front and back position of these two second group guide rails, the level is provided with the direction wheelset that can transversely lead (not marking), the axial of this direction wheelset sets up along the fore-and-aft direction level, this direction wheelset rotates along left right direction and sets up and leads, the wheel face of this direction wheelset is concave surface structure, the wheel face concave surface of this direction wheelset sets up with this second group guide rail surface convex surface is supporting.
4. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: the second rack (7) is parallel to the upper end face of the transverse moving arm (6) and is horizontally arranged on the upper end face of the transverse moving arm (6), teeth (33) of the second rack (7) are located on one side face of the rack and perpendicular to the upper end face of the transverse moving arm (6), the second synchronous motor (312) and cylindrical gears on the power shaft are axially arranged along the vertical direction, a cylindrical gear (32) on the synchronous motor is meshed with the teeth (33) of the second rack (7), and the second synchronous motor (312) is fixed on an inner table body of the walking platform (4).
5. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: the lifting arm (10) is arranged in the lifting device (9), the left side of the lifting arm (10) and the inner wall of the lifting device (9) are of a convex-concave mosaic structure, a third rack (36) is arranged on the right side of the lifting arm (10) along the vertical direction, the synchronous motor (31) is horizontally arranged, the cylindrical gear (32) is meshed with the teeth (33) of the third rack (36), the third synchronous motor (313) is fixed in the lifting device (9), and the cylindrical gear (32) drives the racks (33) to drive the lifting arm (10) to move up and down.
6. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: a group of front and rear rollers (20) are respectively arranged on the left and right sides of the front and rear sides of the two lifting support pulleys (31) at the front and rear ends, and the four rollers are rotatably arranged with the left wheel rail (23) and the right wheel rail (21) in a one-to-one correspondence manner.
7. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1, wherein: left side lift support arm (17) and right lift support arm (171) rotate respectively through pivot (18) and intersect setting on saddle (19) of two lift support coaster (31), the lower extreme of lift support arm (171) rotates through pivot (30) and sets up on the inner wall of saddle (19), the bottom of lift support arm (17) is rotated and is provided with nut (191), nut (191) and screw rod (27) swivelling joint, the right side of screw rod (27) is rotated and is set up on support (271), and the right-hand member of screw rod (27) is provided with driven gear (28), driven gear (28) and driving gear (29) meshing, fourth synchronous machine (16) and driving gear (29) are through fourth synchronous machine axle fixed connection, fourth synchronous machine sets up on backup pad (291) of saddle (19) right-hand member.
8. The plasma perforating and cutting machine special for the injection tube of the LLP type dust collector as claimed in claim 1 or 7, wherein: the cross lifting arm (17) of the lifting support tackle (31) at the rear end and the lower part of the lifting support tackle (171) are provided with a three-jaw fastening wheel (11) and a three-jaw fastening wheel seat (12) which are used for horizontally clamping and locking the blowing pipe (131) in a linkage manner.