Hydraulic drilling machine based on variable feed technology

Abstract

The present invention discloses a hydraulic punching machine based on variable feed technology, which belongs to the technical field of pipeline punching, comprising: an outer sleeve and a main shaft, wherein the two ends of the outer sleeve are respectively equipped with a lower box body and a front box body. The hydraulic punching machine based on variable feed technology is provided with a connecting port, which can convey hydraulic oil to the cavity of the punch through the cooperation of parts. The hydraulic oil entering the cavity will push the punch to slide axially in the main shaft, and when the punch slides, it will drive the punching rod to slide in the assembly groove on the surface of the main shaft. When the punch and the punching rod slide, the punching rod will first contact the pipeline. After the punching rod contacts the pipeline, the cutter head will perform a fixed-point hole in the main shaft opening. After the punching rod performs the fixed-point hole opening, the punch continues to move to punch out the remaining part of the main shaft opening, so that the pipeline is convenient to punch in the final stage of hole opening, and the sparks generated by the high-speed rotation of the main shaft are prevented from contacting the combustible gas in the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline hole drilling, in particular to a hydraulic hole drilling machine based on variable feed technology. Background Art

[0002] In the field of oil and gas pipeline maintenance and repair, hydraulic hole punching machines, as key equipment for maintaining pipeline integrity, undertake the core task of safely drilling holes in operating pipelines. Traditional hydraulic hole punching machines drill holes in pipelines by rotating the cutter head at high speed. Sparks will be generated when the cutter head rotates at high speed. Although coolant is used to assist in drilling holes, there is also a risk of sparks coming into contact with combustible gases inside the pipeline. When sparks come into contact with combustible gases, major safety accidents are likely to occur. If punching is used, it will easily cause the pipe wall to rupture and the hole to be opened irregularly. Summary of the Invention

[0003] The purpose of the present invention is to provide a hydraulic hole-opening machine based on variable feed technology, which first uses the main shaft to open a hole on the surface of the pipe. When the depth of the pipe hole reaches the corresponding position, the punch is pushed to move by hydraulic means. When the punch moves, it can impact the main shaft hole position and push the remaining part of the pipe into the interior of the pipe, thereby avoiding the sparks generated by the main shaft opening the hole from contacting the combustible gas in the pipe, thereby reducing safety hazards.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a hydraulic tapping machine based on variable feed technology, comprising: an outer sleeve and a main shaft, wherein a lower box body and a front box body are respectively mounted at both ends of the outer sleeve, a lower drive mechanism and a screw transmission mechanism for driving the main shaft are respectively mounted inside the lower box body and the front box body, a front body assembly is mounted on the end of the lower box body away from the outer sleeve, a punching mechanism for punching holes in the pipe is mounted inside the main shaft near the front body assembly, and the punching mechanism includes a pushing assembly, a clamping assembly, and a recovery assembly;

[0005] A main shaft is installed through the axial center of the outer sleeve, the lower box body, the front body assembly and the front box body, one end of the main shaft is provided with a tool for drilling a hole, and a driving sleeve for driving the main shaft to rotate is sleeved on the outer surface of the main shaft, and the driving sleeve is rotatably mounted on the inside of the outer sleeve through a bearing, and the two ends of the driving sleeve are rotatably mounted on the inside of the lower box body and the front box body respectively, and the driving sleeve located inside the lower box body is in transmission cooperation with the lower driving mechanism, and the lower driving mechanism can drive the main shaft to rotate at high speed through the driving sleeve to drill a hole in the pipeline;

[0006] A feed screw is rotatably connected to the interior of the front box body, and one end of the feed screw is threadedly connected to the axial center of the main shaft. The feed screw located inside the front box body is coordinated with the screw transmission mechanism. The screw transmission mechanism can drive the feed screw to rotate, and the rotation of the feed screw can drive the main shaft to move axially in the drive sleeve to feed a hole to the surface of the pipe. A locking shaft is connected to the interior of the feed screw, and the locking shaft is connected to the punching mechanism.

[0007] Preferably, the pushing assembly includes a punch, a piston rod, a rotating ring and a punching rod. The punch is movably installed on the inner side of the main shaft, and the punch can move axially and horizontally in the main shaft to punch the pipe. The piston rod is movably installed at the axial center of the inner cavity of the punch. The outer surface of the punch is rotatably installed with a rotating ring through an assembly groove. The outer surface of the rotating ring is provided with at least four punching rods at equal distances in a circular array. The end of the punching rod is provided with a cutting head. The punching rod is movably connected to the assembly groove on the outer surface of the main shaft. When the punch moves horizontally in the main shaft, it can drive the punching rod to slide out of the assembly groove of the main shaft. After the punching rod slides out of the assembly groove of the main shaft, a fixed hole is opened at the cutting position of the pipe.

[0008] Preferably, the pushing assembly further comprises a positioning plate, a bellows, a liquid guide plate and a sealed bearing; one end of the piston rod is fixedly mounted with the positioning plate, the outer surface of the positioning plate is rotatably mounted on the inner wall of the main shaft via a bearing, and a liquid inlet hole is formed through the coaxial center of the positioning plate and the piston rod;

[0009] The liquid inlet hole of the positioning plate is connected to the bellows, the other end of the bellows is connected to a liquid guide plate, and a sealed bearing is installed on the outer surface of the liquid guide plate.

[0010] Preferably, the pushing assembly further comprises a connecting rod, a connecting ring and a connecting port, at least four connecting rods are fixedly mounted on the outer surface of the sealed bearing in an annular array, and the outer surfaces of the connecting rods are movably connected to the assembly grooves of the main shaft;

[0011] The ends of the four connecting rods are fixedly mounted on the inner wall of the connecting ring, and the connecting ring is rotatably mounted inside the front body assembly. A connecting port is installed on the outside of the front body assembly, one end of the connecting port is connected to the connecting ring, and the other end of the connecting port is connected to the hydraulic station through a connecting pipe;

[0012] A communicating infusion trough is provided between the liquid guide plate, the sealing bearing, the connecting rod and the connecting ring.

[0013] Preferably, the clamping assembly includes a clamp, and the clamp is installed inside the punching rod. The clamp is rotated to a specified position to clamp the end of the waste after the pipe is punched.

[0014] Preferably, the clamping assembly also includes a mounting groove, an elastic member and a tooth groove. A mounting groove for rotating the clamp is provided on the side of the punching rod close to the main shaft. An elastic member is installed between the mounting groove and the clamp, and a tooth groove is provided on the outer surface of the clamp.

[0015] Preferably, the recovery assembly includes a hydraulic telescopic rod, a fixed plate and a guide rod. The hydraulic telescopic rod is fixedly installed on the end of the front box body, and the side of the hydraulic telescopic rod is connected to the hydraulic station through a connecting pipe. The hydraulic telescopic rod can push the locking shaft to move axially along the feed screw. One end of the locking shaft is fixedly installed on one end of the fixed plate, and the other end of the fixed plate is symmetrically installed with at least two guide rods at the axial center. The other end of the guide rod passes through the surface of the positioning plate and the liquid guide plate and is fixedly installed on the end of the punch.

[0016] Preferably, the recovery component further comprises a push plate, and the output end of the hydraulic telescopic rod is fixedly mounted with the push plate, and the axial center of the push plate is fixedly mounted on the surface of the locking shaft through an assembly groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the hydraulic tapping machine based on variable feed technology;

[0018] 1. A connection port is provided to transport hydraulic oil to the cavity of the punch through the cooperation of parts. The hydraulic oil entering the cavity will push the punch to slide axially in the spindle. When the punch slides, it will drive the punching rod to slide in the assembly groove on the surface of the spindle. When the punch and the punching rod slide, the punching rod will first contact the pipe. After the punching rod contacts the pipe, the cutter head will make a fixed hole at the opening of the spindle. After the punching rod makes a fixed hole, the punch continues to move to punch out the remaining part of the opening of the spindle, making it convenient to use the punching method in the final stage of the opening of the pipe to avoid the contact between the sparks generated by the high-speed rotation of the spindle and the combustible gas in the pipe;

[0019] 2. When the end of the punching rod moves out of the assembly groove on the outer surface of the main shaft, the end of the clamp will first rotate to the specified position through the cooperation of the parts. When the punch punches the remaining part of the main shaft hole and the waste material is pushed into the pipe, the clamp can clamp the other end of the waste material at the same time to prevent the waste material from falling into the pipe after the pipe hole is opened, which may cause safety hazards.

[0020] 3. A hydraulic telescopic rod is provided, which will shrink when the hydraulic oil inside is withdrawn. When the hydraulic telescopic rod shrinks, it can drive the locking shaft to move. When the locking shaft moves, it can drive the fixed plate and the guide rod to move. When the guide rod moves, it can drive the punch to move. When the punch moves, it can drive the waste to move through the magnet and the clamp. At this time, the rotation of the driving sleeve can drive the main shaft to rotate. When the waste moves into the main shaft, the rotation of the main shaft can clean the burrs on the end of the waste, making it easier to remove the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0023] Figure 3 It is a front cross-sectional structural schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of a partially enlarged cross-sectional structure of the front body assembly of the present invention;

[0025] Figure 5 This is a schematic diagram of a partially enlarged three-dimensional structure of the main shaft of the present invention;

[0026] Figure 6 This is a schematic diagram of the hole construction structure of the present invention;

[0027] Figure 7 It is a partially enlarged three-dimensional structural schematic diagram of the punching mechanism of the present invention;

[0028] Figure 8 It is a partially enlarged three-dimensional cross-sectional structural diagram of the punching mechanism of the present invention;

[0029] Figure 9 This invention Figure 4 Schematic diagram of the enlarged structure of part A.

[0030] In the figure: 10, outer sleeve;

[0031] 20. Lower drive mechanism;

[0032] 30. Front fuselage assembly;

[0033] 40. Screw transmission mechanism;

[0034] 60. Drive sleeve;

[0035] 70. Spindle;

[0036] 80. Feed screw;

[0037] 90. Locking shaft;

[0038] 110. Lower box;

[0039] 120, front box;

[0040] 130. Punching mechanism;

[0041] 131. Pushing assembly; 1311. Punch; 1312. Piston rod; 1313. Positioning plate; 1314. Bellows; 1315. Liquid guide plate; 1316. Sealed bearing; 1317. Connecting rod; 1318. Connecting ring; 1319. Connecting port; 13110. Rotating ring; 13111. Punching rod;

[0042] 132. Clamping assembly; 1321. Mounting slot; 1322. Clamp; 1323. Elastic member; 1324. Tooth groove;

[0043] 133. Recovery assembly; 1331. Hydraulic telescopic rod; 1332. Push plate; 1333. Fixed plate; 1334. Guide rod. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate for the embodiments of the present application described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or vehicle that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or vehicles.

[0046] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] See also Figures 1-6 、 Figure 9 The present invention provides an embodiment: a hydraulic tapping machine based on variable feed technology, comprising: an outer sleeve 10 and a main shaft 70, wherein a lower box body 110 and a front box body 120 are respectively installed at both ends of the outer sleeve 10, and a lower drive mechanism 20 and a screw transmission mechanism 40 for driving the main shaft 70 are respectively installed inside the lower box body 110 and the front box body 120, and a front body assembly 30 is installed at the end of the lower box body 110 away from the outer sleeve 10, and a punching mechanism 130 for punching holes in the pipe is installed inside the main shaft 70 near the front body assembly 30, and the punching mechanism 130 includes a pushing assembly 131, a clamping assembly 132 and a recovery assembly 133;

[0048] It should be noted that, through the cooperation of the lower drive mechanism 20 and the screw transmission mechanism 40, the cutter head at the end of the main shaft 70 can be driven to continuously feed the opening of the pipe surface. As the main shaft 70 is fed, the pipe wall thickness of the pipe at the opening will gradually become thinner, and the thickness of the pipe wall can be judged by the feed depth of the main shaft 70. When the pipe wall thickness reaches the specified size, the pushing component 131 works to push the remaining part of the main shaft 70 after the opening, so that the complete opening of the pipe can be completed by the cooperation of the main shaft 70 and the pushing component 131. After the pipe opening is completed, the clamping component 132 can clamp the pipe waste, and the pipe waste can be recovered by the recycling component 133 after clamping.

[0049] like Figures 1-6 、 Figure 9 The outer sleeve 10, the lower box body 110, the front body assembly 30 and the front box body 120 are penetrated by a main shaft 70 installed at the axial center. One end of the main shaft 70 is provided with a tool for drilling a hole. The outer surface of the main shaft 70 is sleeved with a driving sleeve 60 for driving the main shaft 70 to rotate. The driving sleeve 60 is rotatably mounted inside the outer sleeve 10 through a bearing. The two ends of the driving sleeve 60 are rotatably mounted inside the lower box body 110 and the front box body 120 respectively. The driving sleeve 60 located inside the lower box body 110 is in transmission cooperation with the lower driving mechanism 20. The lower driving mechanism 20 can drive the main shaft 70 to rotate at high speed through the driving sleeve 60 to drill a hole in the pipeline.

[0050] It can be imagined that the lower drive mechanism 20 can drive the drive sleeve 60 to rotate in the outer sleeve 10, the lower box 110, the front body assembly 30 and the front box 120. When the drive sleeve 60 rotates, it drives the main shaft 70 to rotate at high speed, and when the main shaft 70 rotates at high speed, a hole can be opened in the pipeline.

[0051] like Figures 1-6 、 Figure 9The front box body 120 has a feed screw 80 that is rotatably connected to the inside thereof. One end of the feed screw 80 is threadedly connected to the inside of the axial center of the main shaft 70. The feed screw 80 located inside the front box body 120 is in transmission cooperation with the screw transmission mechanism 40. The screw transmission mechanism 40 can drive the feed screw 80 to rotate, and the rotation of the feed screw 80 can drive the main shaft 70 to move axially in the drive sleeve 60 to feed a hole into the pipe surface. A locking shaft 90 is connected to the inside of the feed screw 80, and the locking shaft 90 is connected to the punching mechanism 130.

[0052] It is worth noting that when the main shaft 70 rotates, the screw transmission mechanism 40 can drive the screw transmission mechanism 40 to rotate inside the main shaft 70. When the screw transmission mechanism 40 rotates, it can drive the main shaft 70 to slide on the inner thread of the drive sleeve 60. When the main shaft 70 slides, it can continuously feed and open holes on the surface of the pipe. When the punching mechanism 130 works, it can drive the locking shaft 90 to move inside the feed screw 80.

[0053] Figures 1-9 As shown, the pushing assembly 131 includes a punch 1311, a piston rod 1312, a rotating ring 13110 and a punching rod 13111. The punch 1311 is movably mounted on the inner side of the main shaft 70. The punch 1311 can move axially and horizontally within the main shaft 70 to punch the pipe. The piston rod 1312 is movably mounted at the axial center of the inner cavity of the punch 1311. The rotating ring 13110 is rotatably mounted on the outer surface of the punch 1311 through an assembly groove. At least four punching rods 13111 are equidistantly arranged in a circular array on the outer surface of the rotating ring 13110. A cutting head is provided at the end of each punching rod 13111. The punching rods 13111 are movably connected to the assembly groove on the outer surface of the spindle 70. When the punch head 1311 moves horizontally within the spindle 70, it can drive the punching rods 13111 to slide out of the assembly groove of the spindle 70. After the punching rods 13111 slide out of the assembly groove of the spindle 70, a fixed hole is opened at the cut portion of the pipe.

[0054] It is conceivable that sparks will appear when the spindle 70 rotates at a high speed when drilling a hole in the pipeline. Although coolant is used to assist in drilling the hole, there is also a risk that the sparks will come into contact with the combustible gas inside the pipeline. When the sparks come into contact with the combustible gas, a major safety accident is likely to occur. Then, hydraulic oil will enter the cavity of the punch 1311 through the piston rod 1312. The hydraulic oil entering the cavity will push the punch 1311 to slide axially in the spindle 70. When the punch 1311 slides, it will drive the rotating ring 13110 to move. When the rotating ring 13110 moves, it can drive the punching rod 13111 to slide in the assembly groove on the surface of the main shaft 70. When the punch 1311 and the punching rod 13111 slide, the punching rod 13111 will first contact the cutting part of the pipe. After the punching rod 13111 contacts the pipe, the cutter head at the end of the punching rod 13111 will open a hole in the thin wall. After the punching rod 13111 opens a hole in the thin wall, the punch 1311 will contact the pipe. After the punch 1311 contacts the pipe, it will punch out the remaining part of the main shaft 70 after the hole is opened.

[0055] like Figures 1-9 As shown, the pushing assembly 131 also includes a positioning plate 1313, a bellows 1314, a liquid guide plate 1315, and a sealed bearing 1316. The positioning plate 1313 is fixedly mounted on one end of the piston rod 1312. The outer surface of the positioning plate 1313 is rotatably mounted on the inner wall of the main shaft 70 via a bearing. A liquid inlet hole is formed through the coaxial center of the positioning plate 1313 and the piston rod 1312. The liquid inlet hole of the positioning plate 1313 is connected to the bellows 1314. The other end of the bellows 1314 is connected to the liquid guide plate 1315. The outer surface of the liquid guide plate 1315 is mounted with a sealed bearing 1316.

[0056] It should be noted that the hydraulic oil can enter the infusion groove of the sealed bearing 1316 through the infusion groove of the connecting rod 1317, and the sealed bearing 1316 can transport the hydraulic oil to the inside of the liquid guide plate 1315 through the infusion groove. The liquid guide plate 1315 can transport the hydraulic oil to the inside of the bellows 1314 through the infusion groove. The bellows 1314 can transport the hydraulic oil to the liquid inlet holes of the positioning plate 1313 and the piston rod 1312, and enter the inside of the punch 1311 through the liquid inlet holes. When the main shaft 70 moves, it can drive the positioning plate 1313 to move. When the positioning plate 1313 moves, it can stretch the bellows 1314. At the same time, when the main shaft 70 rotates, it can drive the connecting rod 1317 and the connecting ring 1318 to rotate. When the connecting rod 1317 rotates, it can rotate through the sealed bearing 1316 and the liquid guide plate 1315, so that the punch 1311 can always be stable inside the main shaft 70.

[0057] like Figures 1-9As shown, the pushing assembly 131 also includes a connecting rod 1317, a connecting ring 1318 and a connecting port 1319. At least four connecting rods 1317 are fixedly installed on the outer surface of the sealed bearing 1316 in a circular array. The outer surface of the connecting rod 1317 is movably connected to the assembly groove of the main shaft 70. The ends of the four connecting rods 1317 are fixedly installed on the inner wall of the connecting ring 1318. The connecting ring 1318 is rotatably installed inside the front body assembly 30. A connecting port 1319 is installed on the outside of the front body assembly 30. One end of the connecting port 1319 is connected to the connecting ring 1318, and the other end of the connecting port 1319 is connected to the hydraulic station through a connecting pipe. A connected infusion tank is opened between the liquid guide plate 1315, the sealed bearing 1316, the connecting rod 1317 and the connecting ring 1318.

[0058] It can be imagined that the hydraulic station can deliver the hydraulic oil to the infusion groove of the connecting ring 1318 through the connecting port 1319. The hydraulic oil enters the interior of the connecting ring 1318 and can be delivered to the infusion groove of the connecting rod 1317 through the infusion groove. When the main shaft 70 moves to open the hole, it will drive the assembly groove opened on the surface to slide with the connecting rod 1317.

[0059] like Figures 1-9 As shown, the clamping assembly 132 includes a clamp 1322 , and the clamp 1322 is installed inside the punching rod 13111 . The clamp 1322 is rotated to a specified position to clamp the end of the waste material after the pipe is punched;

[0060] It is worth noting that when the end of the punching rod 13111 moves out of the outer surface of the main shaft 70, the end of the clamp 1322 will first rotate to the specified position through the cooperation of the parts. After the remaining part of the punch 1311 and the main shaft 70 are opened, the waste material will be pushed into the interior of the pipe. At this time, the clamp 1322 can clamp the end of the waste material.

[0061] like Figures 1-6 、 Figure 8 As shown, the clamping assembly 132 further includes a mounting groove 1321, an elastic member 1323, and a tooth groove 1324. The side of the punching rod 13111 close to the main shaft 70 is provided with a mounting groove 1321 for rotating the clamp 1322. The elastic member 1323 is installed between the mounting groove 1321 and the clamp 1322. The outer surface of the clamp 1322 is provided with a tooth groove 1324.

[0062] It is worth noting that when the punch 1311 moves, it can drive the punching rod 13111 to slide in the assembly groove of the main shaft 70. When the punching rod 13111 slides, it can drive the installation groove 1321 and the clamp 1322 to move. When the clamp 1322 moves into the assembly groove of the main shaft 70, the clamp 1322 can be reset by the elastic force of the elastic part 1323. When the clamp 1322 is reset, it can rotate in the installation groove 1321. When the clamp 1322 rotates to a specified angle, it can be clamped by the tooth groove 1324. The tooth groove 1324 can increase the friction between the pipe waste through its own shape.

[0063] like Figures 1-9 As shown, the recovery assembly 133 includes a hydraulic telescopic rod 1331, a fixed plate 1333 and a guide rod 1334. The hydraulic telescopic rod 1331 is fixedly installed at the end of the front box 120, and the side of the hydraulic telescopic rod 1331 is connected to the hydraulic station through a connecting pipe. The hydraulic telescopic rod 1331 can push the locking shaft 90 to move axially along the feed screw 80. One end of the locking shaft 90 is fixedly installed at one end of the fixed plate 1333. At least two guide rods 1334 are symmetrically installed at the other end of the fixed plate 1333 at the axial center. The other end of the guide rod 1334 passes through the surface of the positioning plate 1313 and the liquid guide plate 1315 and is fixed to the end of the punch 1311.

[0064] It can be understood that when the pipe waste is pushed out through the punch 1311, some burrs will remain on the end of the waste facing the inside of the pipe, which can easily cause obstruction during recycling. The hydraulic station can draw the hydraulic oil inside the hydraulic telescopic rod 1331 back into the hydraulic oil. The hydraulic telescopic rod 1331 will shrink when the hydraulic oil is drawn back. When the hydraulic telescopic rod 1331 shrinks, it can drive the locking shaft 90 to move. When the locking shaft 90 moves, it can drive the fixed plate 1333 and the guide rod 1334 to move. When the guide rod 1334 moves, it can drive the punch 1311 to move. When the punch 1311 moves, it can drive the waste to move through the clamp 1322. At this time, the rotation of the driving sleeve 60 can drive the main shaft 70 to rotate. When the waste moves into the main shaft 70, the rotation of the main shaft 70 can clean the burrs on the end of the waste, so that the waste can be better removed.

[0065] like Figure 2-Figure 8 As shown, the recovery assembly 133 further includes a push plate 1332. The output end of the hydraulic telescopic rod 1331 is fixedly mounted with the push plate 1332. The axial center of the push plate 1332 is fixedly mounted on the surface of the locking shaft 90 through an assembly groove.

[0066] It should be noted that when the punch 1311 needs to punch the waste pipe, the hydraulic station works to extract the hydraulic oil in the hydraulic telescopic rod 1331 through the connecting pipe and transport it to the inside of the punch 1311. At this time, the output end of the hydraulic telescopic rod 1331 contracts. When the output end of the hydraulic telescopic rod 1331 contracts, it can drive the push plate 1332 to move. When the push plate 1332 moves, it can drive the locking shaft 90 to slide in the feed screw 80. When the locking shaft 90 moves, it can push the fixed plate 1333 and the guide rod 1334 to perform auxiliary movement.

[0067] When the waste needs to be removed, the hydraulic station works to transport the hydraulic oil in the punch 1311 to the inside of the hydraulic telescopic rod 1331 through the connecting pipe. At this time, the output end of the hydraulic telescopic rod 1331 extends. When the output end of the hydraulic telescopic rod 1331 extends, it can push the push plate 1332 to move. When the push plate 1332 moves, it can drive the locking shaft 90 to slide in the feed screw 80. When the locking shaft 90 moves, it can pull the fixed plate 1333 and the guide rod 1334 for auxiliary movement.

[0068] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A hydraulic tapping machine based on variable feed technology, comprising: The outer sleeve and the main shaft are respectively installed with a lower box body and a front box body at both ends of the outer sleeve, and a lower driving mechanism and a screw transmission mechanism for driving the main shaft are respectively installed inside the lower box body and the front box body. The end of the lower box body away from the outer sleeve is installed with a front body assembly, which is characterized in that a punching mechanism for punching holes in the pipe is installed inside the main shaft near the front body assembly, and the punching mechanism includes a pushing assembly, a clamping assembly and a recovery assembly; A main shaft is installed through the axial center of the outer sleeve, the lower box body, the front body assembly and the front box body, one end of the main shaft is provided with a tool for drilling a hole, and a driving sleeve for driving the main shaft to rotate is sleeved on the outer surface of the main shaft, and the driving sleeve is rotatably mounted on the inside of the outer sleeve through a bearing, and the two ends of the driving sleeve are rotatably mounted on the inside of the lower box body and the front box body respectively, and the driving sleeve located inside the lower box body is in transmission cooperation with the lower driving mechanism, and the lower driving mechanism can drive the main shaft to rotate at high speed through the driving sleeve to drill a hole in the pipeline; A feed screw is rotatably connected to the interior of the front box body, and one end of the feed screw is threadedly connected to the inside of the axial center of the main shaft. The feed screw located inside the front box body is coordinated with the screw transmission mechanism. The screw transmission mechanism can drive the feed screw to rotate, and the rotation of the feed screw can drive the main shaft to move axially in the drive sleeve to feed a hole on the surface of the pipe. A locking shaft is connected to the inside of the feed screw, and the locking shaft is connected to the punching mechanism.

2. The hydraulic tapping machine based on variable feed technology according to claim 1, characterized in that: The pushing assembly includes a punch, a piston rod, a rotating ring and a punching rod. The punch is movably installed on the inner side of the main shaft, and the punch can move axially and horizontally in the main shaft to punch the pipe. The piston rod is movably installed at the axial center of the inner cavity of the punch. The outer surface of the punch is rotatably installed with a rotating ring through an assembly groove. The outer surface of the rotating ring is provided with at least four punching rods at equal distances in a circular array. The end of the punching rod is provided with a cutting head. The punching rod is movably connected to the assembly groove on the outer surface of the main shaft. When the punch moves horizontally in the main shaft, it can drive the punching rod to slide out of the assembly groove of the main shaft. After the punching rod slides out of the assembly groove of the main shaft, a fixed hole is opened at the cutting position of the pipe.

3. The hydraulic tapping machine based on variable feed technology according to claim 2, characterized in that: The pushing assembly further includes a positioning plate, a bellows, a liquid guide plate, and a sealed bearing. A positioning plate is fixedly mounted on one end of the piston rod. The outer surface of the positioning plate is rotatably mounted on the inner wall of the main shaft via a bearing. A liquid inlet hole is formed through the coaxial center of the positioning plate and the piston rod. The liquid inlet of the positioning plate is connected to the bellows, the other end of the bellows is connected to a liquid guide plate, and a sealed bearing is installed on the outer surface of the liquid guide plate.

4. The hydraulic tapping machine based on variable feed technology according to claim 3, characterized in that: The pushing assembly further includes a connecting rod, a connecting ring, and a connecting port. At least four connecting rods are fixedly mounted on the outer surface of the sealed bearing in an annular array. The outer surfaces of the connecting rods are movably connected to the assembly grooves of the main shaft. The ends of the four connecting rods are fixedly mounted on the inner wall of the connecting ring, and the connecting ring is rotatably mounted inside the front body assembly. A connecting port is installed on the outside of the front body assembly, one end of the connecting port is connected to the connecting ring, and the other end of the connecting port is connected to the hydraulic station through a connecting pipe; A communicating infusion trough is provided between the liquid guide plate, the sealing bearing, the connecting rod and the connecting ring.

5. The hydraulic tapping machine based on variable feed technology according to claim 2, characterized in that: The clamping assembly includes a clamp, and the clamp is installed inside the punching rod. The clamp is rotated to a specified position to clamp the end of the waste material after the pipe is punched.

6. The hydraulic tapping machine based on variable feed technology according to claim 5, characterized in that: The clamping assembly also includes a mounting groove, an elastic member and a tooth groove. A mounting groove for rotating the clamp is provided on the side of the punching rod close to the main shaft. An elastic member is installed between the mounting groove and the clamp, and a tooth groove is provided on the outer surface of the clamp.

7. The hydraulic tapping machine based on variable feed technology according to claim 2, characterized in that: The recovery assembly includes a hydraulic telescopic rod, a fixed plate and a guide rod. The hydraulic telescopic rod is fixedly installed on the end of the front box body, and the side of the hydraulic telescopic rod is connected to the hydraulic station through a connecting pipe. The hydraulic telescopic rod can push the locking shaft to move axially along the feed screw. One end of the locking shaft is fixedly installed on one end of the fixed plate, and at least two guide rods are symmetrically installed on the other end of the fixed plate at the axial center. The other end of the guide rod passes through the surface of the positioning plate and the liquid guide plate and is fixedly installed on the end of the punch.

8. The hydraulic tapping machine based on variable feed technology according to claim 7, characterized in that: The recovery component also includes a push plate, and the output end of the hydraulic telescopic rod is fixedly mounted with the push plate, and the axial center of the push plate is fixedly mounted on the surface of the locking shaft through an assembly groove.

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