Automatic metal pipe T-type hole extraction equipment

Abstract

The present application relates to the technical field of metal tube hole extraction, and in particular to an automatic metal tube T-type hole extraction device, including a hole extraction bracket, a connecting frame, a lifting bracket, a hydraulic clamping assembly, an auxiliary limit assembly, a flaw detection assembly, a grinding assembly and a dustproof safety cover. One side of the hole extraction bracket is fixedly connected to the surface of the connecting frame, the inner side of the connecting frame is slidably connected to the surface of the auxiliary limit assembly, the lifting bracket is fixedly connected to the upper end of the hole extraction bracket, the grinding assembly is movably connected to the top of the lifting bracket, the hydraulic clamping assembly is installed on the outside of the hole extraction bracket, the dustproof safety cover is hinged on the outside of the bottom of the grinding assembly, and the flaw detection assembly is installed on the outside of the top of the hydraulic clamping assembly. The automatic metal tube T-type hole extraction device of the present application adopts a positioning slide to ensure the stable lifting and pulling of the multi-head drill and the hole extraction, and then cooperates with the flaw detection sensor to repeatedly illuminate the drilling surface to fully detect whether there are cracks on the drilling surface of the metal tube to ensure the product qualification rate.

Description

Technical Field

[0001] The present application relates to the technical field of metal pipe hole drawing, and in particular to an automatic metal pipe T-shaped hole drawing device. Background Art

[0002] The metal pipe T-hole extraction equipment is mainly used to process T-joints on metal pipes. This equipment has a wide range of applications in multiple industries. First, the metal pipe to be processed is placed in the clamping device of the equipment to ensure that the metal pipe remains stable during the processing. The equipment uses the internal cutting tool or punching device to accurately cut or punch the metal pipe to form a T-hole.

[0003] After searching, the publication number: CN214639393U announced a device for pulling holes in the wall of a metal pipe. By pulling the hole in the pipe wall outward to a certain height before welding, the pipe is less deformed due to uneven heating. In addition, when using the traditional welding method, there is no smooth transition at the junction of the branch pipe and the main pipe, and dead corners will form when the medium flows through the pipe. Especially when the medium contains corrosive substances, it will cause more serious corrosion at the junction. After using the hole pulling technology, a smooth transition is formed at the junction of the branch pipe and the main pipe.

[0004] With respect to the above-mentioned related technologies, the inventor believes that there are the following technical defects that need to be improved:

[0005] When drilling holes in pipes, traditional devices will create micro cracks on the surface of metal pipes. However, this device is not equipped with relevant auxiliary detection structures. When high-pressure fluid is passed into the pipe, if the crack size is large, there is a high probability that the pipe will burst, posing a major safety hazard. Summary of the invention

[0006] The present application provides an automatic metal pipe T-shaped hole extraction device to improve the following technical problems:

[0007] When drilling holes in pipes, traditional devices will create micro cracks on the surface of metal pipes. However, this device is not equipped with relevant auxiliary detection structures. When high-pressure fluid is passed into the pipe, if the crack size is large, there is a high probability that the pipe will burst, posing a major safety hazard.

[0008] The present application provides an automatic metal pipe T-shaped hole extraction device, which adopts the following technical solution:

[0009] An automatic metal pipe T-type hole extraction device comprises a hole extraction bracket, a connecting bracket, a lifting bracket, a hydraulic clamping assembly, an auxiliary limit assembly, a flaw detection assembly, a grinding assembly and a dustproof safety cover, wherein one side of the hole extraction bracket is fixedly connected to the surface of the connecting bracket, the inner side of the connecting bracket is slidably connected to the surface of the auxiliary limit assembly, the lifting bracket is fixedly connected to the upper end of the hole extraction bracket, the grinding assembly is movably connected to the top of the lifting bracket, the hydraulic clamping assembly is installed on the outside of the hole extraction bracket, the dustproof safety cover is hinged on the bottom outside of the grinding assembly, and the flaw detection assembly is installed on the top outside of the hydraulic clamping assembly;

[0010] The hole extraction bracket is used to support the lifting bracket, the lifting bracket is used for the smooth lifting and lowering adjustment of the grinding assembly, the grinding assembly is used for grinding, cutting and drilling operations of metal pipes, the hydraulic clamping assembly is used to clamp metal pipes, the flaw detection assembly is used to detect whether there are micro cracks in the metal pipe after drilling, the auxiliary limit assembly cooperates with the connecting frame to clamp the two ends of the metal pipe and keep the metal pipe level, and the dustproof safety cover is used to collect waste chips generated during the drilling process of the metal pipe and discharge it through the connection negative pressure system.

[0011] In an achievable technical solution of the present application, the hydraulic clamping assembly includes a placing platform, a pushing cylinder, a pushing plate, an arc-shaped clamping block and a fixed clamping block. The placing platform is fixedly connected to the top outer side of the hole extraction bracket, the pushing cylinder is installed on the top of the placing platform for connecting the pushing plate, one side of the pushing plate is fixedly connected to one side surface of the arc-shaped clamping block, the arc-shaped clamping block is slidably connected to the top of the placing platform for docking with the fixed clamping block, and the fixed clamping block is fixedly connected to the other side of the placing platform.

[0012] In an achievable technical solution of the present application, the flaw detection assembly includes an outward expansion bracket, a hydraulic cylinder, a guide slide and a flaw detection sensor, the guide slide is slidably connected to one side of the placement platform, the hydraulic cylinder is installed on the top of the guide slide, the outward expansion bracket is slidably connected to the top of the push plate and is fixedly connected to the output end of the hydraulic cylinder, and the flaw detection sensor is installed on the outside of the outward expansion bracket for detecting surface cracks of the metal pipe.

[0013] In an achievable technical solution of the present application, the grinding assembly includes a positioning slide, a stepper motor, a conveying shaft, a synchronous belt, a pulley, an internal pressure seat and a multi-head drill, the stepper motor is installed inside the lifting bracket, the top of the conveying shaft is fixedly connected to the middle of the pulley, the outer teeth of the pulley are meshed with the inner tooth grooves of the synchronous belt, the internal pressure seat is meshed and connected to the outside of the synchronous belt, and the top of the internal pressure seat is fixedly connected to the bottom surface of the positioning slide, and the multi-head drill is installed at the lower end of the positioning slide.

[0014] In an achievable technical solution of the present application, the auxiliary limiting assembly includes a straight steel pipe, a clamping frame, a rotary pressure head, a stop block, a tightening handle, a sleeve frame, a support frame, a threaded tightening head and a lower pressure block. One end of the straight steel pipe is fixedly connected to one side of the clamping frame, the rotary pressure head is threadedly installed inside the clamping frame and is used to connect the stop block, the stop block is abutted against the inner side of the connecting frame, the sleeve frame is slidably connected to the outer side of the straight steel pipe, the tightening handle is installed on one side of the bottom of the sleeve frame for fixing the sleeve frame, the support frame is installed on the top of the sleeve frame, the threaded tightening head is installed on the top of the support frame and is used to connect the lower pressure block, and the bottom surface of the lower pressure block is firmly clamped with the end surface of the metal pipe.

[0015] In an achievable technical solution of the present application, an embedding groove adapted to the size of the stop block is further provided on the inner side of the connecting frame.

[0016] In an achievable technical solution of the present application, the upper end of the multi-cutter drill rig is also provided with a motor body, a protective chassis, a large belt pulley, a small belt pulley, a positioning shaft frame and a belt body, the output end of the motor body is fixedly connected to the surface of the large belt pulley through a coupling, the small belt pulley is fixedly connected to the outside of the positioning shaft frame, the positioning shaft frame is installed on the top of the multi-cutter drill rig, the inner side of the belt body is tightly fitted with the outer wall surfaces of the large belt pulley and the small belt pulley respectively, and the protective chassis is sleeved on the outside of the belt body.

[0017] In an achievable technical solution of the present application, a slide groove matching the size of one end of the outward expansion bracket is also provided on the inner side of the top of the push plate.

[0018] In a feasible technical solution of the present application, an electronic fence is also installed on the bottom front of the lifting bracket.

[0019] In an achievable technical solution of the present application, two groups of the auxiliary limiting components are provided, and the two groups of the auxiliary limiting components are symmetrically arranged on both sides of the hole extraction bracket.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] This product uses a cylinder clamping method to fix the processed end face of the metal pipe, and cooperates with two sets of lower pressure plates to keep the two ends of the metal pipe flush and complete auxiliary clamping, thereby improving the stability of the metal pipe during the drilling process; on the other hand, this product uses a positioning slide to ensure the stable lifting and pulling of the multi-head drill rig to improve the drilling accuracy, and then cooperates with the flaw detection sensor to repeatedly illuminate the punched surface of the metal pipe to fully detect whether there are cracks on the drilling surface of the metal pipe to ensure the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic structural diagram of an automatic metal pipe T-hole pulling device according to an embodiment of the present application.

[0024] Figure 2 It is a side view of the hydraulic clamping assembly in the embodiment of the present application.

[0025] Figure 3 It is a structural schematic diagram of the auxiliary limiting component in the embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the structure of the flaw detection component in the embodiment of the present application.

[0027] Figure 5 It is a structural schematic diagram of a cross section of a lifting bracket in an embodiment of the present application.

[0028] Figure 6 It is a schematic diagram of the structure of the positioning shaft frame and the belt body in the embodiment of the present application.

[0029] Figure 7 yes Figure 3 A magnified schematic diagram of center A.

[0030] Description of reference numerals:

[0031] 1. Pull-out bracket; 2. Connecting bracket; 3. Lifting bracket;

[0032] 4. Hydraulic clamping assembly; 41. Placing platform; 42. Pushing cylinder; 43. Pushing plate; 44. Arc clamping block; 45. Fixed clamping block;

[0033] 5. Auxiliary limit assembly; 51. Straight steel pipe; 52. Clamping frame; 53. Rotating pressure head; 54. Stop block; 55. Tightening handle; 56. Sleeve frame; 57. Support frame; 58. Threaded tightening head; 59. Lower pressure block;

[0034] 6. Flaw detection assembly; 61. External expansion bracket; 62. Hydraulic cylinder; 63. Guide slide; 64. Flaw detection sensor;

[0035] 7. Grinding assembly; 71. Positioning slide; 72. Stepper motor; 73. Conveyor shaft; 74. Synchronous belt; 75. Pulley; 76. Internal pressure seat; 77. Multi-head drilling machine;

[0036] 8. Dustproof safety cover; 9. Embedded slot; 10. Motor body; 11. Protective chassis; 12. Large belt pulley; 13. Small belt pulley; 14. Positioning shaft frame; 15. Belt body; 16. Slide slot; 17. Electronic fence. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] The following is combined with Figure 1-7This application is described in further detail.

[0042] The present application embodiment discloses an automatic metal pipe T-shaped hole extraction device. Figures 1 to 7 The automatic metal pipe T-type hole-pulling equipment includes a hole-pulling bracket 1, a connecting bracket 2, a lifting bracket 3, a hydraulic clamping assembly 4, an auxiliary limit assembly 5, a flaw detection assembly 6, a grinding assembly 7 and a dustproof safety cover 8. One side of the hole-pulling bracket 1 is fixedly connected to the surface of the connecting bracket 2, the inner side of the connecting bracket 2 is slidably connected to the surface of the auxiliary limit assembly 5, the lifting bracket 3 is fixedly connected to the upper end of the hole-pulling bracket 1, the grinding assembly 7 is movably connected to the top of the lifting bracket 3, the hydraulic clamping assembly 4 is installed on the outside of the hole-pulling bracket 1, the dustproof safety cover 8 is hinged to the bottom outside of the grinding assembly 7, and the flaw detection assembly 6 is installed on the top outside of the hydraulic clamping assembly 4;

[0043] The hole-pulling bracket 1 is used to support the lifting bracket 3, the lifting bracket 3 is used for the smooth lifting and lowering adjustment of the grinding assembly 7, the grinding assembly 7 is used for grinding, cutting and drilling operations of the metal pipe, the hydraulic clamping assembly 4 is used to clamp the metal pipe, the flaw detection assembly 6 is used to detect whether there are micro cracks in the metal pipe after drilling, the auxiliary limit assembly 5 cooperates with the connecting frame 2 to clamp the two ends of the metal pipe and keep the metal pipe level, and the dustproof safety cover 8 is used to collect the waste chips generated during the drilling process of the metal pipe and discharge it through the connection negative pressure system.

[0044] Please refer to Figure 1 , Figure 3 and Figure 7 The auxiliary limiting assembly 5 includes a straight steel pipe 51, a clamping frame 52, a rotating pressure head 53, a stop block 54, a tightening handle 55, a sleeve frame 56, a support frame 57, a threaded tightening head 58 and a lower pressing block 59. One end of the straight steel pipe 51 is fixedly connected to one side of the clamping frame 52, the rotating pressure head 53 is threadedly installed inside the clamping frame 52 and is used to connect the stop block 54, the stop block 54 abuts against the inner side of the connecting frame 2, the sleeve frame 56 is slidably connected to the outer side of the straight steel pipe 51, the tightening handle 55 is installed on one side of the bottom of the sleeve frame 56 to fix the sleeve frame 56, the support frame 57 is installed on the top of the sleeve frame 56, the threaded tightening head 58 is installed on the top of the support frame 57 and is used to connect the lower pressing block 59, and the bottom surface of the lower pressing block 59 is firmly clamped with the end surface of the metal pipe.

[0045] The inner side of the connecting frame 2 is also provided with an embedding groove 9 which is matched with the size of the stop block 54 .

[0046] The auxiliary limiting assembly 5 designed above can clamp and fix metal pipes of various special-shaped structures with its flexible and variable clamping position as required, and has a simple structure and is easy to operate.

[0047] Please refer to Figure 1 and Figure 4The hydraulic clamping assembly 4 includes a placing platform 41, a pushing cylinder 42, a pushing plate 43, an arc-shaped clamping block 44 and a fixed clamping block 45. The placing platform 41 is fixedly connected to the top outer side of the hole-pulling bracket 1. The pushing cylinder 42 is installed on the top of the placing platform 41 for connecting the pushing plate 43. One side of the pushing plate 43 is fixedly connected to one side surface of the arc-shaped clamping block 44. The arc-shaped clamping block 44 is slidably connected to the top of the placing platform 41 for docking with the fixed clamping block 45. The fixed clamping block 45 is fixedly connected to the other side of the placing platform 41.

[0048] The hydraulic clamping assembly 4 designed as above has a simple structure, stable operation and good clamping and fixing effect on the metal pipe, and can effectively prevent the metal pipe from shaking during the hole extraction process.

[0049] The flaw detection assembly 6 includes an outward expansion bracket 61, a hydraulic cylinder 62, a guide slide 63 and a flaw detection sensor 64. The guide slide 63 is slidably connected to one side of the placement platform 41, the hydraulic cylinder 62 is installed on the top of the guide slide 63, the outward expansion bracket 61 is slidably connected to the top of the push plate 43 and is fixedly connected to the output end of the hydraulic cylinder 62, and the flaw detection sensor 64 is installed on the outside of the outward expansion bracket 61 for detecting surface cracks of the metal pipe.

[0050] The flaw detection assembly 6 designed as above has a simple structure and stable operation, and can efficiently detect whether there are large cracks in the main structure of the metal pipe after the hole is drawn.

[0051] Please refer to Figure 1 and Figure 5 The grinding assembly 7 includes a positioning slide 71, a stepper motor 72, a conveying shaft 73, a synchronous belt 74, a pulley 75, an internal pressure seat 76 and a multi-head drill 77. The stepper motor 72 is installed inside the lifting bracket 3. The top of the conveying shaft 73 is fixedly connected to the middle of the pulley 75. The outer teeth of the pulley 75 are meshed with the inner tooth grooves of the synchronous belt 74. The internal pressure seat 76 is meshed and connected to the outside of the synchronous belt 74, and the top of the internal pressure seat 76 is fixedly connected to the bottom surface of the positioning slide 71. The multi-head drill 77 is installed at the lower end of the positioning slide 71.

[0052] The grinding assembly 7 designed above has a simple structure, stable operation and convenient operation, and can be controlled by a computer and a PLC programming module to efficiently complete the drilling and grinding work.

[0053] Please refer to Figure 1 , Figure 2 and Figure 6The upper end of the multi-cutter drill 77 is also provided with a motor body 10, a protective chassis 11, a large belt pulley 12, a small belt pulley 13, a positioning shaft frame 14 and a belt body 15. The output end of the motor body 10 is fixedly connected to the surface of the large belt pulley 12 through a coupling, and the small belt pulley 13 is fixedly connected to the outside of the positioning shaft frame 14. The positioning shaft frame 14 is installed on the top of the multi-cutter drill 77. The inner side of the belt body 15 is tightly fitted with the outer wall surfaces of the large belt pulley 12 and the small belt pulley 13 respectively. The protective chassis 11 is sleeved on the outside of the belt body 15. The top inner side of the push plate 43 is also provided with a slide groove 16 that matches the size of one end of the outward expansion bracket 61.

[0054] An electronic fence 17 is also installed on the bottom front of the lifting bracket 3, and two groups of auxiliary limit assemblies 5 are provided, and the two groups of auxiliary limit assemblies 5 are symmetrically arranged on both sides of the hole-pulling bracket 1. When the equipment is drilling normally, once a person approaches the electronic fence 17, the electronic fence 17 will start the alarm work to improve the safety of the equipment.

[0055] The use process of the automatic metal pipe T-shaped hole extraction device in the embodiment of the present application is roughly as follows:

[0056] When the device is in use, the processed surface of the metal pipe can be placed in the middle position of the placing platform 41, and then the height of the two sets of clamping frames 52 can be adjusted until the sleeve frame 56 contacts the bottom surface of the metal pipe, and the rotary pressure head 53 is rotated to make the abutment block 54 extend into the embedding groove 9 of the connecting frame 2 and abut firmly, thereby fixing the clamping frame 52 and determining the height; the pushing cylinder 42 is started, and the arc clamping block 44 is pushed by the pushing plate 43, and the arc clamping block 44 pushes the metal pipe and faces the fixed clamping block 45, so that The drilling surface is aligned with the bottom drill bit lower end of the multi-tool drill 77; then the staff can adjust the sleeve frame 56 according to the position of the metal pipe and make it move horizontally along the X-axis in the direction of the straight steel pipe 51. When the position is determined, the clamping handle 55 is rotated to fix the sleeve frame 56, and then the threaded tightening head 58 on the top of the support frame 57 is screwed to make the lower pressing block 59 contact with the surface of the metal pipe, thereby completing the end face of the metal pipe to be raised and fixed; when drilling, the stepper motor 72 is started, and the synchronous belt 7 The transmission effect is completed under the same speed rotation of the two sets of pulleys 75, so that the multi-cutter drill 77 is close to the surface of the metal pipe, and then the appropriate cutter head is selected according to the size of the hole. That is, the large belt pulley 12 is driven by the motor body 10, and the positioning shaft frame 14 and the bottom multi-cutter drill 77 are converted in cooperation with the belt body 15. After being inserted into the metal pipe and rotated, the material in the metal pipe is extracted with the appropriate pulling force provided by the upward movement of the positioning slide 71, so as to form a hole and achieve the purpose of efficient hole pulling. When the hole pulling is completed, the hydraulic cylinder 62 outside the placement platform 41 can be started to push the flaw detection sensor 64, and the flaw detection sensor 64 can repeatedly detect the surface of the metal pipe to be punched, fully detect whether there are cracks on the drilling surface of the metal pipe, and ensure the qualified rate of the product. On the other hand, the dustproof safety cover 8 of this product is connected to the positioning slide 71 in a hinged manner, so that it can be flexibly closed, thereby effectively preventing the waste generated during the hole pulling from splashing everywhere, and facilitating centralized collection and treatment.

[0057] The beneficial technical effects of the automatic metal pipe T-shaped hole extraction device of the embodiment of the present application are roughly as follows:

[0058] This product uses a cylinder clamping method to fix the processed end face of the metal pipe, and cooperates with two sets of lower pressure plates to keep the two ends of the metal pipe flush and complete auxiliary clamping, thereby improving the stability of the metal pipe during the drilling process; on the other hand, this product uses a positioning slide 71 to ensure the stable lifting and pulling of the multi-head drill rig 77 to improve the drilling accuracy, and then cooperates with the flaw detection sensor 64 to repeatedly illuminate the punched surface of the metal pipe to fully detect whether there are cracks on the drilling surface of the metal pipe to ensure the product qualification rate.

[0059] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. An automatic metal pipe T-shaped hole extraction device, characterized in that: The invention comprises a hole-pulling bracket (1), a connecting frame (2), a lifting bracket (3), a hydraulic clamping assembly (4), an auxiliary limiting assembly (5), a flaw detection assembly (6), a grinding assembly (7) and a dustproof safety cover (8), wherein one side of the hole-pulling bracket (1) is fixedly connected to the surface of the connecting frame (2), the inner side of the connecting frame (2) is slidably connected to the surface of the auxiliary limiting assembly (5), the lifting bracket (3) is fixedly connected to the upper end of the hole-pulling bracket (1), the grinding assembly (7) is movably connected to the top of the lifting bracket (3), the hydraulic clamping assembly (4) is installed on the outside of the hole-pulling bracket (1), the dustproof safety cover (8) is hinged on the outside of the bottom of the grinding assembly (7), and the flaw detection assembly (6) is installed on the outside of the top of the hydraulic clamping assembly (4); The hole extraction bracket (1) is used to support the lifting bracket (3), the lifting bracket (3) is used for the smooth lifting and lowering adjustment of the grinding assembly (7), the grinding assembly (7) is used for grinding, cutting and drilling operations of metal pipes, the hydraulic clamping assembly (4) is used to clamp the metal pipe, the flaw detection assembly (6) is used to detect whether there are micro cracks in the metal pipe after drilling, the auxiliary limit assembly (5) cooperates with the connecting frame (2) to clamp the two ends of the metal pipe and keep the metal pipe horizontal, and the dustproof safety cover (8) is used to collect waste chips generated during the drilling process of the metal pipe and discharge them through the connection negative pressure system; The hydraulic clamping assembly (4) comprises a placement platform (41), a pushing cylinder (42), a pushing plate (43), an arc-shaped clamping block (44) and a fixed clamping block (45); the placement platform (41) is fixedly connected to the top outer side of the hole extraction bracket (1); the pushing cylinder (42) is installed on the top of the placement platform (41) for connecting the pushing plate (43); one side of the pushing plate (43) is fixedly connected to a side surface of the arc-shaped clamping block (44); the arc-shaped clamping block (44) is slidably connected to the top of the placement platform (41) for docking with the fixed clamping block (45); and the fixed clamping block (45) is fixedly connected to the other side of the placement platform (41); The flaw detection assembly (6) comprises an outward expansion bracket (61), a hydraulic cylinder (62), a guide slide (63) and a flaw detection sensor (64); the guide slide (63) is slidably connected to one side of the placement platform (41); the hydraulic cylinder (62) is installed on the top of the guide slide (63); the outward expansion bracket (61) is slidably connected to the top of the push plate (43) and is fixedly connected to the output end of the hydraulic cylinder (62); the flaw detection sensor (64) is installed on the outside of the outward expansion bracket (61) for detecting surface cracks of the metal pipe; The auxiliary limiting assembly (5) comprises a straight steel pipe (51), a clamping frame (52), a rotating pressure head (53), a stop block (54), a tightening handle (55), a sleeve frame (56), a support frame (57), a threaded tightening head (58) and a lower pressing block (59), one end of the straight steel pipe (51) is fixedly connected to one side of the clamping frame (52), the rotating pressure head (53) is threadedly installed inside the clamping frame (52) and is used to connect the stop block (54), and the stop block (54) is pressed against The sleeve frame (56) is slidably connected to the outer side of the straight steel pipe (51) on the inner side of the connecting frame (2), the clamping handle (55) is installed on the bottom side of the sleeve frame (56) for fixing the sleeve frame (56), the support frame (57) is installed on the top of the sleeve frame (56), the threaded tightening head (58) is installed on the top of the support frame (57) and is used to connect the lower pressing block (59), and the bottom surface of the lower pressing block (59) is firmly clamped with the end surface of the metal pipe.

2. The automatic metal pipe T-shaped hole drawing equipment according to claim 1 is characterized in that: The grinding assembly (7) includes a positioning slide (71), a stepper motor (72), a conveying shaft (73), a synchronous belt (74), a pulley (75), an internal pressure seat (76) and a multi-head drill (77), wherein the stepper motor (72) is installed inside the lifting bracket (3), the top of the conveying shaft (73) is fixedly connected to the middle of the pulley (75), the outer teeth of the pulley (75) are meshed with the inner teeth of the synchronous belt (74), the internal pressure seat (76) is meshedly connected to the outer side of the synchronous belt (74), and the top of the internal pressure seat (76) is fixedly connected to the bottom surface of the positioning slide (71), and the multi-head drill (77) is installed at the lower end of the positioning slide (71).

3. The automatic metal pipe T-hole drawing equipment according to claim 1 is characterized in that: An embedding groove (9) matching the size of the stop block (54) is also provided on the inner side of the connecting frame (2).

4. The automatic metal pipe T-hole drawing equipment according to claim 2, characterized in that: The upper end of the multi-cutting drill (77) is also provided with a motor body (10), a protective case (11), a large belt pulley (12), a small belt pulley (13), a positioning shaft frame (14) and a belt body (15); the output end of the motor body (10) is fixedly connected to the surface of the large belt pulley (12) through a coupling; the small belt pulley (13) is fixedly connected to the outside of the positioning shaft frame (14); the positioning shaft frame (14) is installed on the top of the multi-cutting drill (77); the inner side of the belt body (15) is tightly fitted with the outer wall surfaces of the large belt pulley (12) and the small belt pulley (13), respectively; and the protective case (11) is sleeved on the outside of the belt body (15).

5. The automatic metal pipe T-hole drawing equipment according to claim 1, characterized in that: The inner side of the top of the push plate (43) is also provided with a slide groove (16) matching the size of one end of the outward expansion bracket (61).

6. The automatic metal pipe T-hole drawing equipment according to claim 3, characterized in that: An electronic fence (17) is also installed on the front side of the bottom of the lifting bracket (3).

7. The automatic metal pipe T-hole drawing equipment according to claim 1, characterized in that: Two groups of the auxiliary limiting components (5) are provided, and the two groups of the auxiliary limiting components (5) are symmetrically arranged on both sides of the hole extraction bracket (1).

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