Drilling device for cracking furnace pipe machining

Abstract

The invention discloses a drilling device for cracking furnace tube machining, and relates to the technical field of drilling. A movable distance adjusting piece; rotating the angle adjusting piece; according to the device, the movable distance adjusting piece is arranged, the two movable frames connected to the two-way lead screw in a sleeving mode move in the opposite directions through operation of the servo motor, when a T-shaped limiting plate makes contact with a tool, the T-shaped limiting plate is hindered by the tool, the T-shaped limiting plate retracts into a swing block, and therefore a first contact piece is separated from a second contact piece; at the moment, a servo motor is powered off to stop operation, then a telescopic air cylinder is started to enable a T-shaped limiting plate to be separated from the tool, the position of a connecting block is adjusted according to the diameter of the tool, and therefore the distance between supporting force bearing points of the pipe fitting can be adjusted to be the shortest under the condition that drilling of the tool is not affected; therefore, deformation caused by the fact that the distance between supporting points at the two ends of the pipe fitting is too long is prevented, and meanwhile deformation of the pipe fitting in the drilling and extruding process of a cutter is also prevented.

Description

Technical Field

[0001] The invention relates to the technical field of drilling, in particular to a drilling device for processing cracking furnace tubes. Background Art

[0002] Drilling is a basic method of hole processing. Drilling is often performed on drilling machines and lathes, and can also be performed on boring machines or milling machines. Commonly used drilling machines include bench drilling machines, vertical drilling machines and radial drilling machines.

[0003] Generally, when drilling pipe fittings, both ends of the pipe fittings need to be supported. When drilling cracking furnace tubes, due to the different lengths of the cracking furnace tubes being drilled, if a longer pipe fitting is drilled, the distance between the support points of the pipe fittings is longer, which will cause the height of the pipe fittings under the drill bit to be slightly lower than the horizontal height of the two ends of the pipe fittings due to their own toughness during the drilling process. At the same time, during the process of pressing and drilling the pipe fittings, the center height of the pipe fittings will also be lower than the horizontal height of the two ends of the pipe fittings, which will affect the accuracy of drilling the pipe fittings. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] In view of the above-mentioned problems existing in the existing drilling device for cracking furnace tube processing, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a drilling device for cracking furnace tube processing, which is used to solve the problem.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a drilling device for processing cracking furnace tubes, the device comprising a drilling machine body;

[0008] A drill bit movable seat is arranged on one side of the drilling machine body, and a control panel is installed on the side of the drill bit movable seat away from the drilling machine body;

[0009] The drill bit mounting seat is arranged at the bottom of the drill bit movable seat and is used for mounting the drilling bit;

[0010] A placement table is provided on one side of the drilling machine body and below the drill bit mounting seat;

[0011] A movable distance adjusting member is provided on the top of the placing table and is used to adjust the supporting position of the pipe fitting according to the diameter of the drilling bit;

[0012] The movable distance adjusting member includes a servo motor, a movable frame, a bidirectional screw rod, a connecting block, and a clamping connection unit. The servo motor is installed at the bottom of the placement table, the bidirectional screw rod is connected to the output end of the servo motor, the movable frame is sleeved on the outside of the bidirectional screw rod and extends to the top of the placement table, the connecting block is installed on the top of the movable frame, and the clamping connection unit is provided on one side of the connecting block.

[0013] The rotating angle adjustment piece is arranged on the side of the connecting block close to the center axis of the placement table, and is used to rotate and transpose the positioned pipe fittings.

[0014] The cam is connected to the first end of the movable frame by a toothed connection, and the toothed connection is connected to the first end of the movable frame by a toothed connection.

[0015] As a preferred solution of a drilling device for cracking furnace tube processing described in the present invention, wherein: the movable distance adjusting member also includes a T-shaped limit plate, a swing block, a telescopic cylinder, an L-shaped positioning frame, a rotating shaft, a spur rack, a spur gear, a protective bin, a telescopic spring, a first contact piece, a second contact piece, a third contact piece, and a fourth contact piece, the telescopic cylinder is installed on the outside of the connecting block, the L-shaped positioning frame is fixedly connected to the top of the connecting block, the rotating shaft is rotatably connected to one end of the L-shaped positioning frame close to the telescopic cylinder, the spur gear is arranged on the outside of the rotating shaft, the spur rack It is connected to the output end of the telescopic cylinder and meshes with the spur gear. The protective bin is installed on one side of the L-shaped positioning frame. The rotating coupling passes through the protective bin. The swing block is arranged at one end of the rotating coupling and the T-shaped limit plate is inserted on the side of the swing block away from the L-shaped positioning frame. The telescopic spring is arranged on the inner side of the swing block, and the two ends of the telescopic spring are respectively connected to the T-shaped limit plate and the swing block. The first contact piece is installed on the T-shaped limit plate, the second contact piece is installed on the inner side of the swing block, the third contact piece is installed on the outer wall of the rotating coupling and is located on the inner side of the protective bin, and the fourth contact piece is arranged on the inner wall of the protective bin.

[0016] As a preferred solution of the drilling device for cracking furnace tube processing described in the present invention, there are two movable frames, and the two movable frames are symmetrically arranged along the vertical center axis of the bidirectional screw rod, and a threaded hole matching the bidirectional screw rod is opened at the bottom of the movable frame.

[0017] As a preferred embodiment of the drilling device for cracking furnace tube processing described in the present invention, the first contact piece, the second contact piece, the third contact piece, and the fourth contact piece are connected in series through a wire, the fourth contact piece is electrically connected to the servo motor through a wire, and the first contact piece is electrically connected to the power supply equipment inside the drilling machine body through a wire.

[0018] As a preferred solution of the drilling device for cracking furnace tube processing described in the present invention, the centers of the squeeze link, the driven link, and the spliced ring plate are coaxial.

[0019] As a preferred embodiment of the drilling device for cracking furnace tube processing described in the present invention, the rotating angle adjustment member includes an indicator, a second hexagonal shaft, a worm ring, a worm, a first transmission bevel gear, an L-shaped splicing plate, and a second transmission bevel gear. The second hexagonal shaft is rotatably connected to one side of the placement table, the worm ring is connected to the end of the splicing ring plate away from the squeezing link, the worm is mounted on one side of the movable frame and meshes with the worm ring, the first transmission bevel gear is mounted on the end of the worm close to the second hexagonal shaft, the second transmission bevel gear is sleeved on the second hexagonal shaft, the first transmission bevel gear and the second transmission bevel gear are connected by an L-shaped splicing plate, and the two ends of the L-shaped splicing plate are respectively rotatably connected to the first transmission bevel gear and the second transmission bevel gear, and the indicator is arranged on the side of the pushing frame close to the squeezing link.

[0020] As a preferred solution of the drilling device for cracking furnace tube processing described in the present invention, a scale line is provided on the side of the squeeze link away from the driven link.

[0021] As a preferred solution of the drilling device for cracking furnace tube processing described in the present invention, the inner wall diameter of the worm gear ring is larger than the inner wall diameter of the spliced ring plate, and the center of the worm gear ring is coaxial with the center of the spliced ring plate.

[0022] As a preferred solution of the drilling device for cracking furnace tube processing described in the present invention, a through hole matching the second hexagonal rotating shaft is provided on the inner side of the second transmission bevel gear.

[0023] Beneficial effects of the present invention:

[0024] 1. By setting a movable distance adjusting part, the two movable frames sleeved on the bidirectional screw are moved toward each other through the operation of the servo motor. When the T-shaped limit plate contacts the tool, it will be blocked by the tool, so that the T-shaped limit plate is retracted into the swing block, thereby separating the first contact piece from the second contact piece. At this time, the servo motor will be powered off and stop operating. Then the telescopic cylinder is started to separate the T-shaped limit plate from the tool. At this time, the third contact piece is separated from the fourth contact piece as the rotating shaft rotates. The position of the connecting block is adjusted according to the tool diameter. In this way, the distance between the support force points of the pipe fitting can be adjusted to the shortest without affecting the tool drilling, thereby preventing the support points at both ends of the pipe fitting from being too long and causing deformation, and also preventing the pipe fitting from being deformed during the process of being drilled and squeezed by the tool.

[0025] 2. By setting a clamping connection unit, when the servo motor rotates, the movable frame is driven to move through the bidirectional screw rod, and at this time the movable frame drives the threaded pipe sleeve to rotate so that the threaded pipe sleeve moves horizontally along the first hexagonal rotating shaft. After the position adjustment of the connection block is completed, the pipe fitting is passed through the squeezing link and the splicing ring plate, so that the clamping plate at the bottom inner side of the splicing ring plate supports the pipe fitting. Then, the first hexagonal rotating shaft is rotated to drive the threaded pipe sleeve to rotate through the first hexagonal rotating shaft, so as to make the shift slider move horizontally along the threaded pipe sleeve, thereby making the squeezing link move toward the connection block, thereby squeezing the driven link, and making the oblique connecting pressure block squeeze the clamping plate, so that the clamping plate moves toward the center of the splicing ring plate. In this way, the pipe fitting can be clamped and fixed, so that the center of the pipe fitting is coaxial with the center of the splicing ring plate, thereby further improving the accuracy of drilling;

[0026] 3. By setting a rotating angle adjustment piece, the movable frame is rotated after drilling one side of the pipe fitting is completed. The rotation of the movable frame drives the second transmission bevel gear to rotate. When the second transmission bevel gear rotates, the worm drives the worm gear ring to rotate through the first transmission bevel gear, so that the splicing ring plate rotates as a whole. At this time, the driven link will rotate relative to the squeezing link. Then, the rotation angle of the pipe fitting is judged according to the position of the scale line on the side of the squeezing link corresponding to the indicator mark. There is no need to disassemble, flip or position the pipe fitting, which makes it easier for the equipment to drill the other side of the pipe fitting. The operation is simple and the overall drilling efficiency of the equipment is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the bottom structure of the placement table of the present invention.

[0030] Figure 3 It is a schematic diagram of the top structure of the placement table of the present invention.

[0031] Figure 4 It is a schematic diagram of the connection between the movable frame and the connecting block in the present invention.

[0032] Figure 5 It is a schematic diagram of the connection between the squeezed link and the spliced ring plate in the present invention.

[0033] Figure 6 Schematic diagram of the connection between the spliced ring plate and the connecting block in the present invention.

[0034] Figure 7 Schematic diagram of the connection between the swing block and the L-shaped positioning frame in the present invention.

[0035] Figure 8 Schematic diagram of the internal structure of the swing block of the present invention.

[0036] Figure 9 It is a schematic diagram of the internal structure of the protective chamber of the present invention.

[0037] Figure: 1. Drilling machine body; 2. Drill bit movable seat; 3. Control panel; 4. Drill bit mounting seat; 5. Placement table; 601. Servo motor; 602. Movable frame; 603. Bidirectional screw; 604. First hexagonal rotating shaft; 605. Squeezing chain; 606. T-shaped limit plate; 607. Swing block; 608. L-shaped positioning frame; 609. Telescopic cylinder; 610. Threaded pipe sleeve; 611. Shift slide; 612. Splicing ring plate; 613. Clamping plate; 614. Pushing frame; 615 , oblique connecting pressure block; 616, driven connecting link; 617, straight rack; 618, straight gear; 619, connecting block; 620, rotating coupling; 621, protective compartment; 622, telescopic spring; 623, first contact piece; 624, second contact piece; 625, third contact piece; 626, fourth contact piece; 701, indicator mark; 702, second hexagonal rotating shaft; 703, worm gear ring; 704, worm; 705, first transmission bevel gear; 706, L-shaped splicing plate; 707, second transmission bevel gear. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0041] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0042] Example 1

[0043] Reference Figures 1 to 9 , provides a drilling device for cracking furnace tube processing, comprising a drilling machine body 1;

[0044] The drill bit movable seat 2 is arranged on one side of the drilling machine body 1, and a control panel 3 is installed on the side of the drill bit movable seat 2 away from the drilling machine body 1;

[0045] The drill bit mounting base 4 is provided at the bottom of the drill bit movable base 2 and is used for mounting the drilling bit;

[0046] A placement table 5 is provided on one side of the drilling machine body 1 and below the drill bit mounting seat 4;

[0047] A movable distance adjusting member is provided on the top of the placement table 5 and is used to adjust the supporting position of the pipe fitting according to the diameter of the drilling bit;

[0048] The movable distance adjusting member includes a servo motor 601, a movable frame 602, a bidirectional screw rod 603, a connecting block 619, and a clamping connection unit. The servo motor 601 is installed at the bottom of the placement table 5. The bidirectional screw rod 603 is connected to the output end of the servo motor 601. The movable frame 602 is sleeved on the outside of the bidirectional screw rod 603 and extends to the top of the placement table 5. The connecting block 619 is installed on the top of the movable frame 602. The clamping connection unit is provided on one side of the connecting block 619.

[0049] The rotating angle adjustment member is arranged on one side of the connecting block 619 close to the central axis of the placement table 5, and is used to rotate and transpose the positioned pipe fitting.

[0050] In this embodiment, the tool is first installed on the drill mounting seat 4, and then the operation of the drill movable seat 2 is controlled by the control panel 3 to move the tool downward, and then the servo motor 601 is started, and the movable frame 602 is moved along the bidirectional screw rod 603 through the operation of the servo motor 601, and then the connecting block 619 is moved to both sides of the tool through the movable distance adjusting member, and then the tool is moved up and the pipe fitting is passed through the connecting block 619, and the pipe fitting is clamped and limited by the clamping connection unit, and then the pipe fitting is drilled by the tool, and the pipe fitting can also be rotated to a specified angle by rotating the angle adjusting member to perform drilling on the other side of the pipe fitting.

[0051] Example 2

[0052] Reference Figure 4 、 Figure 5 、 Figure 6 The clamping connection unit includes a splicing ring plate 612, a squeeze link 605, a shift slider 611, a threaded pipe sleeve 610, a first hexagonal shaft 604, a driven link 616, a push frame 614, an oblique connecting pressure block 615, and a clamping plate 613. The first hexagonal shaft 604 is arranged on the inner side of the placement table 5 and passes through the placement table 5. The threaded pipe sleeve 610 is sleeved on the outer side of the first hexagonal shaft 604. One end of the threaded pipe sleeve 610 is rotatably connected to the inner side of the movable frame 602 through a bearing. The shift slider 611 is sleeved on the outer side of the threaded pipe sleeve 610. The squeeze link 605 is installed on the shift At the top of the slider 611, one side of the squeezing link 605 is rotatably connected to a driven link 616 through a bearing. The driven link 616 is located between the connecting block 619 and the squeezing link 605. The pushing frame 614 is installed on the outer wall of the driven link 616. The splicing ring plate 612 is rotatably connected to the inner side of the connecting block 619. The clamping plate 613 extends from the outer side of the splicing ring plate 612 to the inner side of the splicing ring plate 612. The clamping plate 613 and the pushing frame 614 are connected by an oblique connecting pressure block 615. The two ends of the oblique connecting pressure block 615 are rotatably connected to the clamping plate 613 and the pushing frame 614 respectively.

[0053] In this embodiment, when the servo motor 601 rotates, the bidirectional screw rod 603 drives the movable frame 602 to move. At this time, the movable frame 602 drives the threaded pipe sleeve 610 to rotate so that the threaded pipe sleeve 610 moves horizontally along the first hexagonal shaft 604. After the position adjustment of the connecting block 619 is completed, the pipe fitting is passed through the squeeze link 605 and the splicing ring plate 612, so that the clamping plate 613 at the bottom inner side of the splicing ring plate 612 supports the pipe fitting. Then, the first hexagonal shaft 604 is rotated, and the first hexagonal shaft 604 is rotated. The threaded sleeve 610 is driven to rotate, so that the shift slider 611 moves horizontally along the threaded sleeve 610, so that the squeezing link 605 moves toward the connecting block 619, thereby squeezing the driven link 616, and the oblique connecting pressure block 615 squeezes the clamping plate 613, so that the clamping plate 613 moves toward the center of the splicing ring plate 612. In this way, the pipe fitting can be clamped and fixed, so that the center of the pipe fitting is coaxial with the center of the splicing ring plate 612, further improving the accuracy of drilling.

[0054] Example 3

[0055] Reference Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The movable distance adjusting member also includes a T-shaped limit plate 606, a swing block 607, a telescopic cylinder 609, an L-shaped positioning frame 608, a rotating coupling 620, a spur rack 617, a spur gear 618, a protective bin 621, a telescopic spring 622, a first contact piece 623, a second contact piece 624, a third contact piece 625, and a fourth contact piece 626. The telescopic cylinder 609 is installed on the outside of the connecting block 619, the L-shaped positioning frame 608 is fixedly connected to the top of the connecting block 619, the rotating coupling 620 is rotatably connected to one end of the L-shaped positioning frame 608 close to the telescopic cylinder 609, the spur gear 618 is arranged on the outside of the rotating coupling 620, and the spur rack 617 is connected to the output end of the telescopic cylinder 609 and is aligned with the spur gear 618 Engaged, the protective chamber 621 is installed on one side of the L-shaped positioning frame 608, the rotating coupling 620 passes through the protective chamber 621, the swing block 607 is provided at one end of the rotating coupling 620, and the T-shaped limit plate 606 is inserted into the side of the swing block 607 away from the L-shaped positioning frame 608, the telescopic spring 622 is provided on the inner side of the swing block 607, and the two ends of the telescopic spring 622 are respectively connected to the T-shaped limit plate 606 and the swing block 607, the first contact piece 623 is installed on the T-shaped limit plate 606, the second contact piece 624 is installed on the inner side of the swing block 607, the third contact piece 625 is installed on the outer wall of the rotating coupling 620 and located on the inner side of the protective chamber 621, and the fourth contact piece 626 is provided on the inner wall of the protective chamber 621;

[0056] There are two movable frames 602 symmetrically arranged along the vertical axis of the bidirectional screw rod 603 . The bottom of the movable frame 602 is provided with a threaded hole matching the bidirectional screw rod 603 .

[0057] The first contact piece 623, the second contact piece 624, the third contact piece 625, and the fourth contact piece 626 are connected in series via a wire. The fourth contact piece 626 is electrically connected to the servo motor 601 via a wire. The first contact piece 623 is electrically connected to the power supply device inside the drilling machine body 1 via a wire.

[0058] The centers of the squeeze link 605, the driven link 616, and the spliced ring plate 612 are coaxial;

[0059] In this embodiment, the operation of the drill movable seat 2 is controlled by the control panel 3 so that the tool installed on the drill mounting seat 4 moves downward, and then the two movable frames 602 sleeved on the bidirectional screw rod 603 are moved toward each other through the operation of the servo motor 601. When the T-shaped limit plate 606 contacts the tool, it will be blocked by the tool. At this time, the T-shaped limit plate 606 cannot move. At the same time, the swing block 607 moves relative to the T-shaped limit plate 606, so that the T-shaped limit plate 606 is retracted into the swing block 607, thereby separating the first contact piece 623 and the second contact piece 624. At this time, the servo motor 601 will be powered off and stop operating, and then the telescopic cylinder 609 will be started. The extension of the telescopic cylinder 609 causes the spur rack 617 to drive the spur gear 618 to rotate, so that the swing block 607 can rotate along with the rotating shaft. 620 rotates, thereby separating the T-shaped limit plate 606 from the tool. At this time, the third contact piece 625 separates from the fourth contact piece 626 as the rotating coupling 620 rotates. When the T-shaped limit plate 606 separates from the tool, the T-shaped limit plate 606 will be restored under the action of the elastic restoring force of the telescopic spring 622, so that the first contact piece 623 contacts the second contact piece 624 again. However, since the third contact piece 625 and the fourth contact piece 626 are in a separated state, the servo motor 601 is still in a power-off state at this time. The position of the connecting block 619 is adjusted according to the tool diameter, so that the distance between the support force points of the pipe fitting can be adjusted to the shortest without affecting the tool drilling, thereby preventing the support points at both ends of the pipe fitting from being too long and causing deformation, and also preventing the pipe fitting from being deformed during the process of being drilled and squeezed by the tool.

[0060] Example 4

[0061] Reference Figure 3 、 Figure 4 、 Figure 6The rotating angle adjustment member includes an indicator 701, a second hexagonal shaft 702, a worm gear ring 703, a worm 704, a first transmission bevel gear 705, an L-shaped splicing plate 706, and a second transmission bevel gear 707. The second hexagonal shaft 702 is rotatably connected to one side of the placement table 5. The worm gear ring 703 is connected to the end of the splicing ring plate 612 away from the squeeze link 605. The worm 704 is installed on one side of the movable frame 602 and meshes with the worm gear ring 703. The first transmission bevel gear The wheel 705 is mounted on one end of the worm 704 close to the second hexagonal shaft 702, and the second transmission bevel gear 707 is sleeved on the second hexagonal shaft 702. The first transmission bevel gear 705 and the second transmission bevel gear 707 are connected by an L-shaped splicing plate 706, and the two ends of the L-shaped splicing plate 706 are respectively rotatably connected to the first transmission bevel gear 705 and the second transmission bevel gear 707. The indicator mark 701 is set on the side of the pushing frame 614 close to the squeezing link 605;

[0062] A scale line is provided on the side of the squeeze link 605 away from the driven link 616;

[0063] The inner diameter of the worm gear ring 703 is larger than the inner diameter of the splicing ring plate 612 , and the center of the worm gear ring 703 is coaxial with the center of the splicing ring plate 612 ;

[0064] A through hole matching the second hexagonal shaft 702 is formed on the inner side of the second transmission bevel gear 707;

[0065] In this embodiment, after drilling one side of the pipe fitting is completed, the movable frame 602 is rotated, and the second transmission bevel gear 707 is driven to rotate by the rotation of the movable frame 602. When the second transmission bevel gear 707 rotates, the worm 704 drives the worm gear ring 703 to rotate through the first transmission bevel gear 705, so that the splicing ring plate 612 is rotated as a whole. At this time, the driven link 616 will rotate relative to the squeezing link 605. Then, the rotation angle of the pipe fitting is judged according to the position of the scale line on the side of the squeezing link 605 corresponding to the indicator 701. There is no need to disassemble, flip, or position the pipe fitting, which facilitates the equipment to drill the other side of the pipe fitting. The operation is simple and the overall drilling efficiency of the equipment is also improved.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A drilling device for cracking furnace tube processing, characterized in that: It includes a drilling machine body (1); A drill bit movable seat (2) is arranged on one side of the drilling machine body (1), and a control panel (3) is installed on the side of the drill bit movable seat (2) away from the drilling machine body (1); A drill bit mounting seat (4) is provided at the bottom of the drill bit movable seat (2) and is used for mounting a drilling bit; A placement table (5) is provided on one side of the drilling machine body (1) and is located below the drill bit mounting seat (4); A movable distance adjusting member is provided on the top of the placement table (5) and is used to adjust the supporting position of the pipe fitting according to the diameter of different drilling bits; The movable distance adjusting member comprises a servo motor (601), a movable frame (602), a bidirectional screw rod (603), a connecting block (619), and a clamping connection unit. The servo motor (601) is installed at the bottom of the placement platform (5). The bidirectional screw rod (603) is connected to the output end of the servo motor (601). The movable frame (602) is sleeved on the outside of the bidirectional screw rod (603) and extends to the top of the placement platform (5). The connecting block (619) is installed at the top of the movable frame (602). The clamping connection unit is provided on one side of the connecting block (619). The rotating angle adjustment member is arranged on one side of the connecting block (619) close to the central axis of the placement platform (5) and is used to rotate and transpose the positioned pipe fitting.

2. A drilling device for cracking furnace tube processing according to claim 1, characterized in that: The clamping connection unit comprises a splicing ring plate (612), a squeeze link (605), a shifting slider (611), a threaded pipe sleeve (610), a first hexagonal rotating shaft (604), a driven link (616), a pushing frame (614), an oblique connecting pressure block (615), and a clamping plate (613). The first hexagonal rotating shaft (604) is arranged on the inner side of the placement table (5) and passes through the placement table (5). The threaded pipe sleeve (610) is sleeved on the outer side of the first hexagonal rotating shaft (604). One end of the threaded pipe sleeve (610) is rotatably connected to the inner side of the movable frame (602) through a bearing. The shifting slider (611) is sleeved on the outer side of the threaded pipe sleeve (610). The squeeze link (605) is installed on the inner side of the first hexagonal rotating shaft (604). At the top of the shift slider (611), one side of the squeezing link (605) is rotatably connected to a driven link (616) through a bearing. The driven link (616) is located between the connecting block (619) and the squeezing link (605). The pushing frame (614) is installed on the outer wall of the driven link (616). The splicing ring plate (612) is rotatably connected to the inner side of the connecting block (619). The clamping plate (613) extends from the outer side of the splicing ring plate (612) to the inner side of the splicing ring plate (612). The clamping plate (613) and the pushing frame (614) are connected through an oblique connecting pressure block (615). The two ends of the oblique connecting pressure block (615) are rotatably connected to the clamping plate (613) and the pushing frame (614).

3. The drilling device for cracking furnace tube processing according to claim 2, characterized in that: The movable distance adjusting member further comprises a T-shaped limit plate (606), a swing block (607), a telescopic cylinder (609), an L-shaped positioning frame (608), a rotating shaft (620), a spur rack (617), a spur gear (618), a protective chamber (621), a telescopic spring (622), a first contact piece (623), a second contact piece (624), a third contact piece (625), and a fourth contact piece (626). The telescopic cylinder (609) is mounted on the outside of the connecting block (619). The L-shaped positioning frame (608) is fixedly connected to the top of the connecting block (619). The rotating shaft (620) is rotatably connected to one end of the L-shaped positioning frame (608) close to the telescopic cylinder (609). The spur gear (618) is arranged on the outside of the rotating shaft (620). The spur rack (617) is connected to the output end of the telescopic cylinder (609) and is connected to the spur gear (618). The protective chamber (621) is mounted on one side of the L-shaped positioning frame (608), the rotating shaft (620) passes through the protective chamber (621), the swing block (607) is arranged at one end of the rotating shaft (620), and the T-shaped limiting plate (606) is plugged into the side of the swing block (607) away from the L-shaped positioning frame (608), the telescopic spring (622) is arranged on the inner side of the swing block (607), and the telescopic spring (622) is arranged on the inner side of the swing block (607). The two ends of the spring (622) are respectively connected to the T-shaped limit plate (606) and the swing block (607); the first contact piece (623) is installed on the T-shaped limit plate (606); the second contact piece (624) is installed on the inner side of the swing block (607); the third contact piece (625) is installed on the outer wall of the rotating shaft (620) and is located on the inner side of the protective chamber (621); and the fourth contact piece (626) is arranged on the inner wall of the protective chamber (621).

4. The drilling device for cracking furnace tube processing according to claim 3, characterized in that: There are two movable frames (602), and the two movable frames (602) are symmetrically arranged along the vertical center axis of the bidirectional screw rod (603). The bottom of the movable frame (602) is provided with a threaded hole matching the bidirectional screw rod (603).

5. The drilling device for cracking furnace tube processing according to claim 3, characterized in that: The first contact piece (623), the second contact piece (624), the third contact piece (625), and the fourth contact piece (626) are connected in series via a wire, the fourth contact piece (626) is electrically connected to the servo motor (601) via a wire, and the first contact piece (623) is electrically connected to the power supply device inside the drilling machine body (1) via a wire.

6. The drilling device for cracking furnace tube processing according to claim 3, characterized in that: The centers of the squeezing link (605), the driven link (616), and the splicing ring plate (612) are coaxial.

7. The drilling device for cracking furnace tube processing according to claim 3, characterized in that: The rotating angle adjustment member comprises an indicator (701), a second hexagonal rotating shaft (702), a worm wheel ring (703), a worm (704), a first transmission bevel gear (705), an L-shaped splicing plate (706), and a second transmission bevel gear (707). The second hexagonal rotating shaft (702) is rotatably connected to one side of the placement table (5). The worm wheel ring (703) is connected to one end of the splicing ring plate (612) away from the squeeze link (605). The worm (704) is installed on one side of the movable frame (602) and meshes with the worm wheel ring (703). The first transmission bevel gear (705) is rotated to the L-shaped splicing plate (706). The movable bevel gear (705) is mounted on one end of the worm (704) close to the second hexagonal rotating shaft (702), the second transmission bevel gear (707) is sleeved on the second hexagonal rotating shaft (702), the first transmission bevel gear (705) and the second transmission bevel gear (707) are connected via an L-shaped splicing plate (706), and the two ends of the L-shaped splicing plate (706) are respectively rotatably connected to the first transmission bevel gear (705) and the second transmission bevel gear (707), and the indicator mark (701) is arranged on one side of the pushing frame (614) close to the squeezing link (605).

8. The drilling device for cracking furnace tube processing according to claim 7, characterized in that: A scale line is provided on the side of the squeeze link (605) away from the driven link (616).

9. The drilling device for cracking furnace tube processing according to claim 7, characterized in that: The inner wall diameter of the worm gear ring (703) is larger than the inner wall diameter of the splicing ring plate (612), and the center of the worm gear ring (703) is coaxial with the center of the splicing ring plate (612).

10. The drilling device for cracking furnace tube processing according to claim 7, characterized in that: A through hole matching the second hexagonal rotating shaft (702) is provided on the inner side of the second transmission bevel gear (707).

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