Punching device for valve hall steel structure machining

Abstract

The invention relates to the technical field of steel structure trepanning, in particular to a trepanning device for valve hall steel structure machining, which comprises a drill rod and a drilling motor, the drill rod is detachably and coaxially connected with the output end of the drilling motor, an angle adjusting structure is arranged below the drilling motor, and the output end of the drilling motor is rotatably sleeved with an end disc. A slag returning cylinder is coaxially fixed to the bottom face of the end disc, the lower end of the slag returning cylinder is connected with an angle adjusting structure, a slag passing groove communicated with the slag returning cylinder is formed in the upper surface of the end disc, the outer ring face of the slag returning cylinder is fixedly sleeved with an air blowing ring, a plurality of inner pipes are installed on the upper surface of the air blowing ring in a communicated mode, the inner pipes are tangent to the outer ring face of the end disc, and every two adjacent inner pipes are tangent. The upper end of the inner pipe slidably communicates with an outer pipe, and the lower end of the outer pipe is elastically connected with the upper surface of the blowing ring. According to the drilling device, the adjacent soft bags can be extruded and sealed through expansion of the soft bags, and meanwhile, the multiple outer pipes making contact with one another and the end disc form a sealed space, so that chippings generated during drilling cannot affect the outside.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure hole punching, and in particular to a hole punching device for valve hall steel structure processing. Background Art

[0002] The valve hall is mainly used to arrange the converter valve and related equipment. It is the core of the converter station building. The valve hall usually uses steel structure, which is a structure made of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel and steel plates.

[0003] Chinese patent CN114160845A discloses a multi-angle adjustable steel structure hole opening device, including a body, a processing groove is opened in the middle of the top of the body, two strip slide grooves are opened on both sides of the processing groove, the interiors of the four strip slide grooves are slidably connected with strip sliders, the interiors of the four strip slide grooves are rotatably connected with first screw rods, and the four first screw rods are threadedly connected to the middle parts of the corresponding strip sliders. The invention drives the two aligned first screws to rotate synchronously through the cooperation of servo motor B, bevel gear A, bevel gear B, pulley and transmission belt, drives the lifting and lowering of the cross plate through the rotation of the first screw, pushes the movement of the limit slider through the electric push rod, and drives the movement of the clamping plate through the movement of the limit slider, so as to fix the drilled steel plate and adjust the height, ensure that the waste chips generated during drilling fall to the waste chip conveyor belt and are transported to the waste collection box, so as to collect the waste generated during drilling. The above-mentioned related technology has the following defects: in order to drill holes of different angles on the steel structure, different angles will be formed between the drill rod and the steel structure during the drilling process, and a large amount of debris will be generated during drilling. In order to prevent the debris from splashing around and causing harm to the drillers and affecting the working environment, the drilled debris will be collected by suction, but when the drill rod and the steel structure are tilted, the existing suction structure cannot form a stable closed space between the steel structure and the drill hole, and the debris will also be thrown to the outside during the rotation of the drill rod to cause an impact. Therefore, a hole opening device for valve hall steel structure processing is proposed. Summary of the invention

[0004] In order to ensure that the drilling space of the steel structure is stably in a closed state when the angle between the drill rod and the steel structure is changed, the present invention provides a hole opening device for processing the valve hall steel structure.

[0005] The present invention provides a hole-opening device for processing valve hall steel structure, which adopts the following technical scheme: it includes a drill rod and a drilling motor, the drill rod is detachably coaxially connected to the output end of the drilling motor, an angle adjustment structure is arranged below the drilling motor, an end plate is rotatably sleeved on the output end of the drilling motor, a slag return barrel is coaxially fixed to the bottom surface of the end plate, the lower end of the slag return barrel is connected to the angle adjustment structure, a slag passage groove connected to the slag return barrel is arranged on the upper surface of the end plate, a blowing ring is fixedly sleeved on the outer ring surface of the slag return barrel, a plurality of inner tubes are connected and installed on the upper surface of the blowing ring, the inner tubes are tangent to the outer ring surface of the end plate, every two adjacent inner tubes are tangent to each other, the upper end of the inner tube is slidably connected to the outer tube, the lower end of the outer tube is elastically connected to the upper surface of the blowing ring, and the upper end of the outer tube is fixedly connected to a soft bag.

[0006] The slag return cylinder is fixedly sleeved on the outer surface of the drilling motor, the lower end of the slag return cylinder is connected and installed with an air pressure valve pipe A, the other end of the air pressure valve pipe A is connected and installed with a slag storage structure, the other end of the slag storage structure is connected and installed with an air pump, the other end of the air pump is installed with an air pressure valve pipe B, and the blowing ring is connected and installed with the upper end of the air pressure valve pipe B.

[0007] Optionally, the angle adjustment structure includes an outer supporting arc plate and an inner supporting arc plate, the outer supporting arc plate is damped and slidingly sleeved with an outer arc block, the outer surface of the inner supporting arc plate is damped and slidingly sleeved with an inner arc block, the inner arc block is fixed to the slag return barrel, the inner supporting arc plate is located on the inner ring side of the outer supporting arc plate, two power telescopic rods are fixed to the outer ring surface of the inner supporting arc plate, and the other end of the power telescopic rods is fixed to the outer arc block.

[0008] Optionally, two bent vertical poles are installed on the side of the outer supporting arc plate, and the two bent vertical poles are slidably penetrated by movable clamps on the sides close to each other, and the two movable clamps are rotatably inserted with bolt rods on the sides away from each other, and the two bent vertical poles are respectively threadedly sleeved on the outer surfaces of the two bolt rods.

[0009] Optionally, the slag storage structure includes an outer cylinder and an openable and closable slag storage box, the upper end of the openable and closable slag storage box is connected and installed with the bottom surface of the outer cylinder, the left and right ends of the outer cylinder are respectively fixedly connected with the air pressure valve tube A and the air pump, a ring column is rotatably inserted inside the outer cylinder, a plurality of slag storage grooves are provided on the outer ring surface of the ring column, the lower end of the air pressure valve tube A is coaxially arranged with the air pump, a filter plate is fixedly inserted at the left end of the air pump, a control motor is arranged on the inner ring side of the ring column, the output end of the control motor is coaxially fixed with the inner ring surface of the ring column, and the control motor is fixed to the outer cylinder.

[0010] Optionally, a ring disk is coaxially arranged on the upper end face of the end disk, the ring disk is fixedly sleeved on the output end of the drilling motor, a ring plate is rotatably inserted on the bottom face of the ring disk, the circumferential side face of the drill rod is a spiral drill groove structure, a spiral air pipe is arranged in the spiral drill groove structure of the drill rod, a telescopic ventilation structure is installed at the lower end of the spiral air pipe, the telescopic ventilation structure is connected and installed with the side face of the circular axis of the ring disk, a pressure valve pipe is fixedly penetrated through the bottom face of the end disk, the ring plate is fixedly sleeved on the upper end of the pressure valve pipe, the upper end of the pressure valve pipe is connected with the inside of the ring disk, the lower end of the pressure valve pipe is fixedly penetrated through the inner wall of the slag return barrel, and the pressure valve pipe is located at one end outside the slag return barrel and is connected and installed with a blowing ring.

[0011] Optionally, the telescopic ventilation structure includes a bent pipe and a threaded pipe, one end of the bent pipe is fixedly connected to the spiral air pipe, the other end of the bent pipe is threadedly connected to the threaded pipe, the bent pipe is rotationally connected to the ring disk, and the upper end of the spiral air pipe is a perforated structure.

[0012] Optionally, a bevel gear ring is rotatably sleeved on the outer surface of the ring disk, and two bevel gears are meshed on the upper side of the bevel gear ring. The two bevel gears are fixedly sleeved on the outer surfaces of the two threaded tubes respectively.

[0013] Optionally, the upper ends of the bent uprights are all vertical, and the two movable clamps are symmetrically distributed about the axis of the supporting arc plate.

[0014] Optionally, the upper end of the air pressure valve tube A is vertical, the vertical end of the air pressure valve tube A is eccentrically arranged with respect to the axis of the slag return cylinder, and the lower end of the slag return cylinder is eccentrically arranged in a conical ring shape.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] 1. The present invention controls the drill rod to gradually approach the steel structure by arranging components such as an inner tube, an outer tube, a soft bag and an end plate. The outer tube first drives the soft bag to contact the steel structure first, and the soft bag that contacts the steel structure first pushes the corresponding outer tube to approach the blowing ring. After all the soft bags are in contact with the steel structure, the air pump blows air into the soft bags through the air pressure valve tube B, the blowing ring, the inner tube and the outer tube. The soft bags expand and squeeze and seal with adjacent soft bags. At the same time, multiple outer tubes that contact each other form a closed space with the end plate, ensuring that when the drill rod forms different angles with the steel structure, a closed drilling space is formed under the cooperation of the outer tube, the soft bag and the end plate, so that the drilling debris will not affect the outside.

[0017] 2. The present invention provides components such as a slag storage tank, a ring column, a slag return cylinder and a filter plate. An air pump draws air through the closed drilling space formed above the connected slag storage tank, the air pressure valve pipe B and the opposite end plate of the slag return cylinder. The airflow drives the debris to enter the slag return cylinder through the slag groove and then into the slag storage tank. The filter plate blocks the debris in the slag storage tank. When the ring column rotates to drive the slag storage tank storing the debris to be connected with the openable and closable slag storage box, the debris falls into the slag storage box, so that the slag storage tank can circulate the slag.

[0018] 3. The present invention provides components such as spiral air pipes, ring disks and ring plates, and the air pressure entering the blowing ring reaches a certain level. After the soft bag is expanded, the air flow is blown into the ring disk through the pressure valve pipe, and then ejected through the upper end of the spiral air pipe. After the drill rod is drilled into the steel structure, the spiral air pipe ejects air outward from the depth of the hole at the drill position, thereby preventing debris from remaining in the drilled hole and improving the drilling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 2 is a schematic diagram of the structure in which the outer arc block is connected to the outer supporting arc plate in an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the connection between the air blowing ring and the slag return cylinder in an embodiment of the present invention;

[0022] Figure 4 is a schematic side view of some structures in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the connection between the end plate and the pressure valve pipe in an embodiment of the present invention;

[0024] Figure 6 In the embodiment of the present invention Figure 5 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 7 Schematic diagram of the structure of the connection between the outer tube and the soft bag in an embodiment of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the connection between the ring column and the outer cylinder in an embodiment of the present invention.

[0027] Figure numerals: 1, drill rod; 2, drilling motor; 3, end plate; 4, angle adjustment structure; 41, outer support arc plate; 42, inner support arc plate; 43, outer arc block; 44, inner arc block; 45, power telescopic rod; 46, bending vertical rod; 47, movable splint; 48, bolt rod; 5, slag return cylinder; 6, slag trough; 7, blowing ring; 8, inner tube; 9, outer tube; 10, soft bag; 11, air pressure valve tube A; 12 , slag storage structure; 121, outer cylinder; 122, openable and closable slag storage box; 123, slag storage tank; 124, ring column; 125, filter plate; 126, control motor; 13, air pump; 14, air pressure valve tube B; 15, ring disk; 16, ring plate; 17, spiral air pipe; 18, telescopic ventilation structure; 181, bent pipe; 182, threaded pipe; 183, bevel gear ring; 184, bevel gear; 19, pressure valve tube. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0029] The embodiment of the present invention discloses a hole-opening device for processing a valve hall steel structure. Figure 1-Figure 8 As shown, it includes a drill rod 1 and a drilling motor 2. The drill rod 1 and the output end of the drilling motor 2 are detachably coaxially connected. An angle adjustment structure 4 is arranged below the drilling motor 2. An end plate 3 is rotatably sleeved on the output end of the drilling motor 2. A slag return cylinder 5 is coaxially fixed to the bottom surface of the end plate 3. The lower end of the slag return cylinder 5 is connected to the angle adjustment structure 4.

[0030] The angle adjustment structure 4 includes an outer supporting arc plate 41 and an inner supporting arc plate 42. The outer supporting arc plate 41 is connected with an outer arc block 43 in a damping sliding sleeve, so that the outer arc block 43 will move relative to the outer supporting arc plate 41 when it is subjected to a sufficiently large thrust, thereby increasing the position stability between the outer arc block 43 and the outer supporting arc plate 41. The outer surface of the inner supporting arc plate 42 is connected with an inner arc block 44 in a damping sliding sleeve, so that the inner arc block 44 will rotate relative to the inner supporting arc plate 42 when it is subjected to a sufficiently large thrust, thereby increasing the stability between the inner arc block 44 and the inner supporting arc plate 42. Fixed to the slag return tube 5, the inner supporting arc plate 42 is located on the inner ring side of the outer supporting arc plate 41. By pushing the outer arc block 43 to slide on the surface of the outer supporting arc plate 41, the position of the inner supporting arc plate 42 relative to the outer supporting arc plate 41 is changed, and the inner arc block 44 is pushed to slide on the inner supporting arc plate 42 to change the angle between the drill rod 1 and the steel structure. Two power telescopic rods 45 are fixed on the outer ring surface of the inner supporting arc plate 42, and the other end of the power telescopic rod 45 is fixed to the outer arc block 43. The telescopic rod 45 can be extended and retracted to control the depth of the drill rod 1 inserted into the steel structure.

[0031] Two bent vertical rods 46 are installed on the side of the outer supporting arc plate 41. The two bent vertical rods 46 are slidably penetrated by a movable clamping plate 47 on the side close to each other, and the two movable clamping plates 47 are rotatably inserted with bolt rods 48 on the side away from each other. The two bent vertical rods 46 are respectively threadedly sleeved on the outer surfaces of the two bolt rods 48. The bolt rods 48 are rotated to engage with the movable clamping plates 47, and the distance between the two movable clamping plates 47 can be changed to fix them together with the steel structure.

[0032] The upper surface of the end plate 3 is provided with a slag passage 6 connected with the slag return tube 5. The outer ring surface of the slag return tube 5 is fixedly sleeved with a blowing ring 7. The upper surface of the blowing ring 7 is connected with a plurality of inner tubes 8. The inner tubes 8 are tangent to the outer ring surface of the end plate 3. Every two adjacent inner tubes 8 are tangent to each other. The upper ends of the inner tubes 8 are slidably connected with an outer tube 9. The lower end of the outer tube 9 is elastically connected to the upper surface of the blowing ring 7. The elastic connection between the outer tube 9 and the blowing ring 7 has a tendency to push the outer tube 9 away from the blowing ring 7. The upper end of the outer tube 9 is fixedly sleeved with a blowing ring 7. There is a soft bag 10 in fixed connection. When controlling the drill rod 1 to gradually approach the steel structure, the outer tube 9 first drives the soft bag 10 to contact the steel structure. Due to the angle between the drill rod 1 and the steel structure, different soft bags 10 contact the steel structure for different times. The soft bag 10 that contacts the steel structure first pushes the corresponding outer tube 9 to approach the blowing ring 7. After all the soft bags 10 contact the steel structure, airflow is blown into the soft bags 10 through the outer tube 9. The soft bags 10 can be squeezed and closed with adjacent soft bags 10 by expansion.

[0033] The slag return barrel 5 is fixedly sleeved on the outer surface of the drilling motor 2, and the lower end of the slag return barrel 5 is connected and installed with an air pressure valve tube A11, the upper end of the air pressure valve tube A11 is vertical, and the air pressure valve tube A11 is installed with a pressure valve. When the negative pressure in the slag return barrel 5 reaches a certain level, the air pressure valve tube A11 can be connected to the external space for pressure relief treatment. The vertical end of the air pressure valve tube A11 is eccentrically arranged with the axis of the slag return barrel 5, and the lower end of the slag return barrel 5 is arranged in an eccentric conical ring shape, so that the air flow entering the slag return barrel 5 has a tendency to flow downward, so that debris will not accumulate at the lower end of the slag return barrel 5, the other end of the air pressure valve tube A11 is connected and installed with a slag storage structure 12, and the other end of the slag storage structure 12 is connected and installed with an air pump 13.

[0034] The slag storage structure 12 includes an outer cylinder 121 and an openable and closable slag storage box 122. The upper end of the openable and closable slag storage box 122 is connected and installed with the bottom surface of the outer cylinder 121. The left and right ends of the outer cylinder 121 are respectively fixedly connected with the air pressure valve tube A11 and the air pump 13. A ring column 124 is rotatably inserted inside the outer cylinder 121. A plurality of slag storage grooves 123 are provided on the outer ring surface of the ring column 124. The lower end of the air pressure valve tube A11 is coaxially arranged with the air pump 13. A filter disc 125 is fixedly inserted at the left end of the air pump 13. A control motor 126 is arranged on the inner ring side of the ring column 124. The output end of the control motor 126 is coaxially fixed with the inner ring surface of the ring column 124, and the control motor 126 is fixed to the outer cylinder 121.

[0035] The other end of the air pump 13 is installed with an air pressure valve pipe B14, the air blowing ring 7 is connected with the upper end of the air pressure valve pipe B14, and the air pressure valve pipe B14 is installed with a pressure valve to relieve the pressure when the pressure in the air blowing ring 7 is too high.

[0036] The upper end surface of the end plate 3 is coaxially provided with a ring plate 15, which is fixedly sleeved on the output end of the drilling motor 2, and a ring plate 16 is rotatably inserted on the bottom surface of the ring plate 15. The circumferential side surface of the drill rod 1 is a spiral drill groove structure, and a spiral air pipe 17 is arranged in the spiral drill groove structure of the drill rod 1. A telescopic ventilation structure 18 is installed at the lower end of the spiral air pipe 17. The telescopic ventilation structure 18 is connected and installed with the side surface of the circular axis of the ring plate 15. The telescopic ventilation structure 18 includes a bend pipe 181 and a threaded pipe 182. One end of the bend pipe 181 is fixedly connected with the spiral air pipe 17, and the other end of the bend pipe 181 is connected with the threaded pipe 182. The tube 182 is threadedly connected, the curved tube 181 is rotatably connected to the ring disk 15, the upper end of the spiral air pipe 17 is a perforated structure, and a bevel gear ring 183 is rotatably sleeved on the outer surface of the ring disk 15. Two bevel gears 184 are meshed on the upper side of the bevel gear ring 183. The two bevel gears 184 are respectively fixedly sleeved on the outer surfaces of the two threaded tubes 182. When replacing drill rods 1 of different diameters, the rotating bevel gear ring 183 is engaged with the two bevel gears 184 to drive the two threaded tubes 182 to rotate, and the distance between the spiral air pipe 17 and the axis of the drill rod 1 is adjusted to adapt to drill rods 1 of different diameters.

[0037] A pressure valve pipe 19 is fixedly passed through the bottom surface of the end plate 3. The air flow is blown into the ring plate 15 through the pressure valve pipe 19, and then ejected through the upper end of the spiral air pipe 17. After the drill rod 1 drills into the steel structure, the spiral air pipe 17 ejects air outward from the depth of the hole at the drill position, and assists in driving the generated debris to be discharged from the hole. The ring plate 16 is fixedly sleeved on the upper end of the pressure valve pipe 19. The upper end of the pressure valve pipe 19 is connected with the inside of the ring plate 15. The lower end of the pressure valve pipe 19 is fixedly passed through the inner wall of the slag return cylinder 5. The pressure valve pipe 19 is located at one end outside the slag return cylinder 5 and is connected and installed with the blowing ring 7.

[0038] The working principle is: after changing the angle between the drill rod 1 and the steel structure, while controlling the drill rod 1 to gradually approach the steel structure, the outer tube 9 first drives the soft bag 10 to contact the steel structure first. Due to the angle between the drill rod 1 and the steel structure, different soft bags 10 have different contact times with the steel structure. The soft bag 10 that first contacts the steel structure first pushes the corresponding outer tube 9 close to the blowing ring 7. After all the soft bags 10 are in contact with the steel structure, the air pump 13 blows air into the soft bag 10 through the air pressure valve tube B14, the blowing ring 7, the inner tube 8 and the outer tube 9. The soft bag 10 expands and squeezes and closes with the adjacent soft bags 10. At the same time, multiple outer tubes 9 that contact each other form a closed space with the end plate 3, ensuring that when the drill rod 1 forms different angles with the steel structure, a closed drilling space is formed under the cooperation of the outer tube 9, the soft bag 10 and the end plate 3, so that the drilling debris will not affect the outside.

[0039] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drilling device for valve hall steel structure processing, comprising a drilling rod (1) and a drilling motor (2), characterized in that: The drill rod (1) is detachably coaxially connected to the output end of the drilling motor (2); an angle adjustment structure (4) is arranged below the drilling motor (2); an end plate (3) is rotatably sleeved on the output end of the drilling motor (2); a slag return barrel (5) is coaxially fixed on the bottom surface of the end plate (3); the lower end of the slag return barrel (5) is connected to the angle adjustment structure (4); a slag passage (6) connected to the slag return barrel (5) is provided on the upper surface of the end plate (3); a blowing ring (7) is fixedly sleeved on the outer ring surface of the slag return barrel (5); a plurality of inner tubes (8) are connected and installed on the upper surface of the blowing ring (7); the inner tubes (8) are tangent to the outer ring surface of the end plate (3); every two adjacent inner tubes (8) are tangent to each other; the upper end of the inner tube (8) is slidably connected to an outer tube (9); the lower end of the outer tube (9) is elastically connected to the upper surface of the blowing ring (7); the upper end of the outer tube (9) is fixedly connected to a soft bag (10); The slag return cylinder (5) is fixedly sleeved on the outer surface of the drilling motor (2); the lower end of the slag return cylinder (5) is connected to and installed with a pneumatic valve pipe A (11); the other end of the pneumatic valve pipe A (11) is connected to and installed with a slag storage structure (12); the other end of the slag storage structure (12) is connected to and installed with an air pump (13); the other end of the air pump (13) is installed with a pneumatic valve pipe B (14); and the air blowing ring (7) is connected to and installed with the upper end of the pneumatic valve pipe B (14).

2. A hole-punching device for machining a valve hall steel structure according to claim 1, characterized in that: The angle adjustment structure (4) comprises an outer supporting arc plate (41) and an inner supporting arc plate (42); the outer supporting arc plate (41) is connected to an outer arc block (43) in a damping sliding sleeve; the outer surface of the inner supporting arc plate (42) is connected to an inner arc block (44) in a damping sliding sleeve; the inner arc block (44) is fixed to the slag return cylinder (5); the inner supporting arc plate (42) is located on the inner ring side of the outer supporting arc plate (41); two power telescopic rods (45) are fixed to the outer ring surface of the inner supporting arc plate (42); the other end of the power telescopic rod (45) is fixed to the outer arc block (43).

3. A hole-punching device for machining a valve hall steel structure according to claim 2, characterized in that: Two bent vertical rods (46) are installed on the side of the outer supporting arc plate (41), and the two bent vertical rods (46) are slidably penetrated by a movable clamping plate (47) on the side close to each other, and the two movable clamping plates (47) are rotatably inserted with bolt rods (48) on the side away from each other, and the two bent vertical rods (46) are respectively threadedly sleeved on the outer surfaces of the two bolt rods (48).

4. A hole-punching device for machining a valve hall steel structure according to claim 1, characterized in that: The slag storage structure (12) comprises an outer cylinder (121) and an openable and closable slag storage box (122); the upper end of the openable and closable slag storage box (122) is connected and installed with the bottom surface of the outer cylinder (121); the left and right ends of the outer cylinder (121) are respectively fixedly connected with the air pressure valve tube A (11) and the air pump (13); a ring column (124) is rotatably inserted inside the outer cylinder (121); a plurality of slag storage grooves (123) are provided on the outer ring surface of the ring column (124); the lower end of the air pressure valve tube A (11) is coaxially arranged with the air pump (13); a filter disc (125) is fixedly inserted at the left end of the air pump (13); a control motor (126) is arranged on the inner ring side of the ring column (124); the output end of the control motor (126) is coaxially fixed with the inner ring surface of the ring column (124); and the control motor (126) is fixed to the outer cylinder (121).

5. The hole-punching device for valve hall steel structure processing according to claim 1, characterized in that: The upper end surface of the end plate (3) is coaxially provided with a ring plate (15), which is fixedly sleeved on the output end of the drilling motor (2), and a ring plate (16) is rotatably inserted on the bottom surface of the ring plate (15). The circumferential side surface of the drill rod (1) is a spiral drill groove structure, and a spiral air pipe (17) is arranged in the spiral drill groove structure of the drill rod (1). A telescopic ventilation structure (18) is installed at the lower end of the spiral air pipe (17), and the telescopic ventilation structure (18) is connected and installed with the circular axis side surface of the ring plate (15). A pressure valve pipe (19) is fixedly penetrated through the bottom surface of the end plate (3), and the ring plate (16) is fixedly sleeved on the upper end of the pressure valve pipe (19). The upper end of the pressure valve pipe (19) is connected with the inside of the ring plate (15), and the lower end of the pressure valve pipe (19) is fixedly penetrated through the inner wall of the slag return cylinder (5). The pressure valve pipe (19) is located at one end outside the slag return cylinder (5) and is connected and installed with the air blowing ring (7).

6. A hole-punching device for machining a valve hall steel structure according to claim 5, characterized in that: The telescopic ventilation structure (18) comprises a bent pipe (181) and a threaded pipe (182); one end of the bent pipe (181) is fixedly connected to the spiral air pipe (17); the other end of the bent pipe (181) is threadedly connected to the threaded pipe (182); the bent pipe (181) is rotatably connected to the ring disk (15); and the upper end of the spiral air pipe (17) is a perforated structure.

7. A hole-punching device for machining a valve hall steel structure according to claim 6, characterized in that: The outer surface of the ring disk (15) is rotatably sleeved with a bevel gear ring (183), and the upper side of the bevel gear ring (183) is meshed with two bevel gears (184), and the two bevel gears (184) are respectively fixedly sleeved on the outer surfaces of the two threaded tubes (182).

8. The hole-punching device for valve hall steel structure processing according to claim 3, characterized in that: The upper ends of the bent uprights (46) are all vertical, and the two movable clamping plates (47) are symmetrically distributed about the axis of the supporting arc plate (41).

9. The hole-punching device for valve hall steel structure processing according to claim 1, characterized in that: The upper end of the air pressure valve tube A (11) is vertical, the vertical end of the air pressure valve tube A (11) is eccentrically arranged with respect to the axis of the slag return cylinder (5), and the lower end of the slag return cylinder (5) is eccentrically arranged in a conical ring shape.

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