Efficient welding displacement device and method for mud pump casing

Abstract

The present application relates to the technical field of welding, in particular to a high-efficiency welding displacement device and method for a slurry pump shell, which comprises a base, a cylinder and a flange, and further comprises two oppositely arranged clamping plates, a plurality of arc plates are arranged on the clamping plates and used for abutting against the outer surface of the cylinder; a driving mechanism is used for driving the clamping plates to move towards or away from each other; a welding mechanism comprises a welding gun and an adjusting assembly used for driving the welding gun to move; a rotary driving mechanism is used for driving the plurality of arc plates to move synchronously so as to drive the clamped cylinder to rotate; a suction assembly comprises air cavities arranged on the arc plates and suction holes in communication with the air cavities, and the air cavities are connected with an air pump through an air flow pipeline; a vibration assembly comprises hammer beads arranged in the suction holes, the hammer beads can be moved by suction to accumulate energy when the air pump is working, and release energy to impact the surface of the cylinder when the negative pressure is released; a blowing assembly comprises an exhaust plate in communication with the air outlet end of the air pump and used for blowing air to the weld of the cylinder.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to a high-efficiency welding displacement device and method for mud pump casing. Background Technology

[0002] Mud pumps are core power equipment in fields such as oil drilling, mining, and geological exploration. Their hydraulic end casings (typically large cast steel or ductile iron components, weighing 3–15 tons each) are responsible for conveying and sealing high-pressure mud (working pressures often reach 35–52.5 MPa). The casing structure is a complex box shape, including suction / discharge valve boxes, cylinder liner mounting chambers, inlet / outlet flanges, and internal reinforcing ribs. As the pump's supporting component, the welding quality of the casing directly affects its dimensional and positional tolerances, and the welding quality depends on selecting a suitable welding method.

[0003] For example, patent document CN212599884U discloses a high-efficiency welding displacement device for a mud pump housing. It includes a base, on which are fixed a worm gear support frame, a worm gear and spindle support frame, and a spindle support frame. A spindle is mounted on each of the worm gear bearing seats, worm gear and spindle bearing seats, and spindle bearing seats via their respective bearings. A worm gear is mounted on the spindle, and a worm cooperating with it is attached to a worm. A crank is fixed to the end of the worm. A pin hole seat is fixed to the worm gear support frame. An axial hole is provided on the worm gear, and a positioning pin is inserted into the pin hole seat and the axial hole. A vertical plate positioning block is located in the middle of the spindle, and a front-end plate positioning disc is located inside the spindle bearing seat. The front-end plate positioning disc fixes one end of the mud pump housing, and the vertical plate positioning block positions and locks the middle of the mud pump housing. This patent improves welding efficiency and quality while ensuring welder safety.

[0004] Although existing mandrel-adjustable positioning devices optimize welding posture through precise positioning, effectively improving weld formation conditions and operational convenience, their functional design has significant limitations: the devices only focus on posture control during the welding process and fail to incorporate post-weld critical quality intervention into the process closed loop. After welding, the casing forms a complex residual stress field at structural abrupt changes such as the valve box connection area and flange root due to thermal cycling; simultaneously, metal spatter, oxide scale, and particulate impurities inevitably adhere to the weld periphery. Because the device lacks in-situ integrated stress relief and surface cleaning functions, the workpiece must be interrupted and transferred to an independent station for subsequent processing. This process disruption leads to two hidden dangers: residual stress continues to evolve during uncontrolled cooling and transfer, easily causing structural deformations such as flange end face warping and sealing failure; weld impurities solidify and embed after temperature drop, not only increasing cleaning difficulty but also potentially hiding in sealing gaps or stress concentration areas, becoming a hidden defect source that induces leakage and accelerates fatigue damage. Therefore, this application proposes a high-efficiency welding positioning device and method for mud pump casings. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency welding displacement device and method for mud pump casings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency welded displacement device for a mud pump casing, comprising a base, a cylinder, and a flange, and further comprising: Two opposing clamping plates are provided, each clamping plate having multiple arc plates for contacting the outer surface of the cylinder; A drive mechanism is used to drive the clamping plates to move towards or away from each other; A welding mechanism, comprising a welding torch and an adjustment assembly for driving the welding torch to move; A rotary drive mechanism is used to drive multiple arc plates to move synchronously, thereby causing the clamped cylinder to rotate. The adsorption assembly includes an air cavity disposed on the arc plate and an adsorption hole communicating with the air cavity, wherein the air cavity is connected to an air pump through an airflow pipe. The vibration assembly includes a hammer ball disposed in the adsorption hole, the hammer ball being adsorbed and moved to accumulate energy when the air pump is working, and releasing energy to strike the surface of the cylinder when the negative pressure is released. The purging assembly includes an exhaust plate connected to the outlet of the air pump for blowing air onto the weld seam of the cylinder.

[0007] Preferably, the driving mechanism includes a vertical plate, an adjusting cylinder whose output end is fixedly connected to a clamping plate on one side of the vertical plate, and a positioning rod that is slidably connected to the vertical plate on one side of the clamping plate.

[0008] Preferably, a positioning seat is fixedly connected to the top of the base, a lead screw is rotatably connected to the top of the positioning seat, a sliding plate is threadedly connected to the outer surface of the lead screw, a guide rod for sliding connection of the sliding plate is fixedly connected to the top of the positioning seat, the sliding plate is fixedly connected to the vertical plate, and a servo motor for driving the lead screw to rotate is fixedly connected to the bottom of the positioning seat.

[0009] Preferably, the rotary drive mechanism includes multiple slide bars slidably connected within a clamping plate, with a common connecting rod connecting the multiple slide bars. A positioning frame is fixedly connected to one side of the clamping plate, and an incomplete gear is rotatably connected inside the positioning frame. A drive motor for driving the incomplete gear is fixedly connected to the top of the positioning frame. Teeth that mesh with the incomplete gear are fixedly connected to one side of each slide bar. A positioning plate is fixedly connected to one side of the clamping plate. A positioning laser adapted to the positioning plate is fixedly connected to the top of the common connecting rod. A slide rod for sliding the slide bars is provided inside the clamping plate, and a spring is sleeved on the outer surface of the slide rod.

[0010] Preferably, the adsorption assembly further includes a connecting pipe for connecting multiple arc plates, and a valve nozzle is connected to the bottom of the connecting pipe.

[0011] Preferably, the vibration assembly includes a venting groove formed inside the adsorption hole, a plug is fixedly connected to the outer surface of the hammer ball, an air supply hole is fixedly connected to the inside of the adsorption hole, and a shaking spring fixedly connected to the plug is fixedly connected to one side of the air supply hole.

[0012] Preferably, the purging assembly further includes an air pipe, a plurality of auxiliary air cylinders are fixedly connected to one side of the air pipe, a piston push rod fixedly connected to an exhaust plate is slidably connected to one end of the auxiliary air cylinder, the exhaust plate is connected to the air outlet of the air pump through an air supply pipe, an air shell is fixedly connected inside the air pipe, and a piston rod slidably connected to the air shell is fixedly connected to one side of the clamping plate.

[0013] Preferably, a three-jaw chuck is rotatably connected to one side of the positioning seat, the top of the three-jaw chuck is provided with a plurality of jaws for supporting the flange, a ball bearing is rotatably connected to one side of the jaws, and a rotary motor for driving the three-jaw chuck to rotate is provided on one side of the positioning seat.

[0014] Preferably, the adjustment assembly includes a movable base, a lifting screw rotatably connected to the top of the movable base, a guide rod fixedly connected to the top of the movable base, a lifting plate threadedly connected to the outer surface of the lifting screw, the lifting plate slidably connected to the guide rod, a motor for driving the lifting screw to rotate fixedly connected inside the movable base, and a guide rail for sliding the movable base fixedly connected to one side of the base.

[0015] This invention also provides a method for efficient welding displacement of a mud pump casing, comprising the following steps: S1. Clamping and longitudinal seam welding: Place the cylinder between two clamping plates and operate the drive mechanism to make the clamping plates contact the outer surface of the cylinder for clamping and fixing. S2. Start the air pump to adsorb and fix the cylinder through the adsorption hole; drive the rotary drive mechanism to make the multiple arc plates swing synchronously and drive the cylinder to rotate to adjust the position of the weld. S3. Adjust the distance between the arc plate and the cylinder to form a gap between the adsorption hole and the inner wall of the cylinder; restart the air pump to make the vibration component run to impact the surface of the cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The adaptive clamping system composed of clamping plates and arc plates, combined with the vacuum adsorption assembly formed by the air cavity, adsorption holes, and one-way valve plugs, constructs a dual fixing mechanism of "mechanical contact + negative pressure adsorption," significantly enhancing the rigidity of the cylinder clamping and effectively suppressing micro-deformation and displacement caused by welding heat input, providing a stable benchmark for weld formation; the servo motor, lead screw, guide rod, three-jaw chuck, jaws, ball bearings, and rotary motor work together to achieve rapid and accurate alignment of the cylinder and flange, greatly shortening changeover time and improving welding coaxiality; the welding torch, moving seat, lifting screw, and guide rail work in conjunction with the cylinder's rotation drive. This structure not only allows for flexible welding of longitudinal welds and circumferential welds between the cylinder and flange, but also precisely guides the weld to the optimal welding posture through step-by-step rotation and real-time angle monitoring, significantly reducing operational difficulty and improving weld consistency. Crucially, the device innovatively integrates post-weld in-situ treatment. After welding, the rotary drive mechanism precisely positions the cylinder above the exhaust plate, instantly removing residual gas and particulate impurities through directional airflow. This prevents weld slag from solidifying and embedding into sealing areas or stress concentration points from the source of the process, effectively eliminating potential leakage hazards and fatigue damage risks.

[0017] 2. The adaptive clamping system composed of clamping plates and arc plates, combined with the vacuum adsorption mechanism formed by air chambers, adsorption holes and one-way valve plugs, provides dual rigid constraints and significantly suppresses welding thermal deformation; the servo motor, lead screw, guide rod, three-jaw chuck, jaws, ball bearings and rotary motor work together to achieve millimeter-level precise alignment between the cylinder and flange, greatly shortening the clamping time; the welding torch, moving seat, lifting screw and guide rail work together with the rotary drive mechanism to flexibly complete all-position welding and monitor the posture in real time. What is particularly groundbreaking is that the hammer ball, plug plate, vent groove, and vibrating spring cleverly utilize the working airflow of the air pump to drive the hammer ball to strike the surface of the cylinder at high frequency during the adsorption and energy storage, venting and release, and circulation. This actively excites the weld lattice structure through physical vibration, effectively relaxing residual stress and inhibiting the initiation of microcracks, all without the need for additional energy or complex control. The exhaust plate, side plate, piston rod, air shell, auxiliary air cylinder, and piston push rod innovatively adopt a linkage mechanism of "clamping plate displacement and pneumatic transmission", which enables the exhaust plate to automatically track the weld position according to the cylinder specifications. The airflow from the air pump outlet blows the weld area in a directional manner through the air delivery pipe, instantly removing spatter and oxide particles. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the base in this invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 4 This is a schematic diagram of the three-jaw chuck in this invention; Figure 5This is a schematic diagram of the clamping plate in this invention; Figure 6 This is a schematic diagram of the arc plate in this invention; Figure 7 This is a schematic cross-sectional view of the slider in this invention; Figure 8 This is a schematic diagram of the slide bar in this invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic cross-sectional view of the trachea in this invention; Figure 11 For the present invention Figure 10 Enlarged schematic diagram of the structure at point C.

[0019] In the diagram: 100, base; 101, welding torch; 102, cylinder; 103, flange; 104, movable seat; 105, lifting plate; 106, lifting screw; 107, smooth rod; 108, guide rail; 109, motor; 200, clamping plate; 201, positioning seat; 202, three-jaw chuck; 203, jaw; 204, ball bearing; 205, rotary motor; 206, servo motor; 207, lead screw; 208, guide rod; 209, moving plate; 210, adjusting cylinder; 211, positioning rod; 212, vertical plate; 300, arc plate; 301, slide bar; 302, connecting rod; 30 3. Air pump; 304. Drive motor; 305. Incomplete gear; 306. Gear teeth; 307. Slide rod; 308. Spring; 309. Side plate; 310. Air pipe; 311. Piston rod; 312. Exhaust plate; 313. Air supply pipe; 314. Connecting air pipe; 315. Valve nozzle; 316. Air chamber; 317. Adsorption hole; 318. Positioning laser; 319. Positioning plate; 320. Air shell; 321. Auxiliary air cylinder; 322. Piston push rod; 323. Positioning frame; 400. Hammer ball; 401. Plug; 402. Air vent groove; 403. Air supply hole; 404. Vibration spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 - Figure 11The present invention provides a technical solution: a high-efficiency welding displacement device for mud pump casing, which is particularly suitable for the entire process of longitudinal weld welding, circumferential weld welding of cylinder 102 formed by rolling steel plate welding, and post-weld posture control of cylinder 102 and flange 103. It includes a base 100, cylinder 102 and flange 103, wherein cylinder 102 is a rolled steel plate that is welded into a cylinder, and then cylinder 102 is welded to flange 103.

[0022] Two clamping plates 200 are arranged opposite each other, and multiple arc plates 300 are provided on the clamping plates 200 to abut against the outer surface of the cylinder 102. By setting the arc plates 300, they can be attached to the surface of the cylinder 102 to achieve fixation.

[0023] The driving mechanism is used to drive the clamping plates 200 to move towards or away from each other. The driving mechanism includes a vertical plate 212. A positioning cylinder 210 with its output end fixedly connected to the clamping plate 200 is fixedly connected to one side of the vertical plate 212. A positioning rod 211 with its slidable connection to the vertical plate 212 is fixedly connected to one side of the clamping plate 200. By setting the driving mechanism, the clamping plate 200 can be driven to move. By operating the positioning cylinder 210, the clamping plate 200 can be driven to move, thereby fixing the cylinder 102.

[0024] The base 100 has a fixedly connected positioning seat 201 at its top, a rotatably connected lead screw 207 at its top, a sliding plate 209 threadedly connected to the outer surface of the lead screw 207, a fixedly connected guide rod 208 for sliding connection of the sliding plate 209 at its top, the sliding plate 209 being fixedly connected to the vertical plate 212, and a fixedly connected servo motor 206 for driving the lead screw 207 to rotate at its bottom. By setting the servo motor 206 to drive the lead screw 207 to rotate, the position of the sliding plate 209 can be adjusted, thus changing the height of the clamping plate 200.

[0025] Furthermore, a three-jaw chuck 202 is rotatably connected to one side of the positioning seat 201. The top of the three-jaw chuck 202 is provided with multiple jaws 203 for supporting the flange 103. A ball bearing 204 is rotatably connected to one side of the jaws 203. A rotary motor 205 for driving the three-jaw chuck 202 to rotate is provided on one side of the positioning seat 201. By setting the three-jaw chuck 202 and the jaws 203 to cooperate, the flange 103 can be fixed. The rotary motor 205 can drive the three-jaw chuck 202 to rotate and change the position of the flange 103.

[0026] The welding mechanism includes a welding torch 101 and an adjustment component for driving the welding torch 101 to move. By setting the adjustment component, the position of the welding torch 101 can be changed to realize the longitudinal welding of the cylinder 102 and the welding of the cylinder 102 to the flange 103.

[0027] The adjustment assembly includes a movable base 104, a lifting screw 106 rotatably connected to the top of the movable base 104, a smooth rod 107 fixedly connected to the top of the movable base 104, a lifting plate 105 threadedly connected to the outer surface of the lifting screw 106, the lifting plate 105 slidably connected to the smooth rod 107, a motor 109 for driving the lifting screw 106 to rotate fixedly connected inside the movable base 104, and a guide rail 108 for sliding the movable base 104 fixedly connected to one side of the base 100. The lateral position of the welding torch 101 can be adjusted by setting the cooperation between the guide rail 108 and the movable base 104, and the longitudinal position of the welding torch 101 can be adjusted by setting the cooperation between the lifting screw 106 and the lifting plate 105.

[0028] A rotary drive mechanism is used to drive multiple arc plates 300 to move synchronously, thereby rotating the clamped cylinder 102. The synchronous operation of multiple arc plates 300 can fix the cylinder 102.

[0029] The rotary drive mechanism includes multiple slide bars 301 slidably connected within the clamping plate 200. A common connecting rod 302 connects the multiple slide bars 301. A positioning frame 323 is fixedly connected to one side of the clamping plate 200. An incomplete gear 305 is rotatably connected inside the positioning frame 323. A drive motor 304 for driving the incomplete gear 305 is fixedly connected to the top of the positioning frame 323. Teeth 306 meshing with the incomplete gear 305 are fixedly connected to one side of each slide bar 301. A positioning plate 319 is fixedly connected to one side of the clamping plate 200. The top of the common connecting rod 302 is fixedly... A positioning laser 318 adapted to the positioning plate 319 is connected. A slide rod 307 for sliding the slide bar 301 is provided in the clamping plate 200. A spring 308 is sleeved on the outer surface of the slide rod 307. The slide bar 301 can be driven to move by the engagement of the incomplete gear 305 and the teeth 306. A common connecting rod 302 is provided to allow multiple slide bars 301 to be connected and move synchronously. The incomplete gear 305 is an incomplete gear that can disengage from the teeth 306 after continuous rotation. At this time, the spring 308 on the outer surface of the slide rod 307 can drive the slide bar 301 to reset, thereby realizing the adjustment of the cylinder 102.

[0030] The adsorption assembly includes an air chamber 316 disposed on the arc plate 300 and adsorption holes 317 communicating with the air chamber 316. The air chamber 316 is connected to an air pump 303 through an airflow pipe. The adsorption assembly also includes a connecting pipe 314 for connecting multiple arc plates 300. The bottom of the connecting pipe 314 is connected to a valve nozzle 315, wherein the valve nozzle 315 can absorb dust in the annular gap between the cylinder 102 and the flange 103, and at the same time cool down the temperature of the annular gap. By setting the air pump 303 to draw air from the air chamber 316, negative pressure can be generated in the multiple adsorption holes 317, thereby adsorbing the cylinder 102.

[0031] Clamping and positioning: Place the cylinder 102 between the two clamping plates 200, start the adjusting cylinder 210 to drive the clamping plates 200 to move towards each other, and the arc plate 300 fits against the outer surface of the cylinder 102; simultaneously start the air pump 303, the negative pressure of the air chamber 316 causes the one-way valve plug 401 to open, and the adsorption hole 317 adsorbs the surface of the cylinder 102, forming a mechanical + vacuum double clamping.

[0032] Longitudinal welding of cylinder 102: Adjust the moving seat 104 to the starting position of the longitudinal weld of cylinder 102, and the motor 109 drives the lifting screw 106 to rotate, which drives the welding gun 101 to move at a constant speed along the axis of cylinder 102 to complete the welding.

[0033] Rotation and positioning of cylinder 102: Start the drive motor 304, the incomplete gear 305 meshes with the teeth 306, push the slide bar 301 to slide along the slide rod 307, drive the arc plate 300 to move circumferentially along the cylinder 102, and drive the cylinder 102 to rotate. The positioning laser spot 318 moves within the 319 scale area of ​​the positioning plate, and the rotation angle is monitored in real time. After the incomplete gear 305 rotates through the tooth segment, it disengages from the mesh, the spring 308 drives the slide bar 301 to reset, and the arc plate 300 returns to the initial clamping position. Repeat the above process to precisely rotate the weld of cylinder 102 to the position where it mates with flange 103.

[0034] Circumferential welding of cylinder 102 and flange 103: Install flange 103 into three-jaw chuck 202, with jaws 203 clamping the outer edge of flange 103, and rotate motor 205 to finely adjust the angle to align the weld seam; adjust welding torch 101 to the circumferential position to complete the welding.

[0035] Post-weld in-situ treatment: After welding is completed, drive the cylinder 102 to rotate directly above the exhaust plate 312, turn on the external air source and blow the inside of the cylinder 102 through the air vent of the exhaust plate 312 to remove welding residual gas and particulate impurities, prevent impurities from solidifying and embedding into the weld area during transportation, and provide a clean interface for subsequent assembly.

[0036] Specifically, in use, the cylinder 102 is first installed between two clamping plates 200. Then, the adjusting cylinder 210 is activated to drive the clamping plates 200 to move, causing multiple arc plates 300 to abut against the outer surface of the cylinder 102. Subsequently, the welding torch 101 performs longitudinal welding on the cylinder 102. The motor 109 drives the lifting screw 106 to rotate, thereby moving the lifting plate 105. The welding torch 101 is mounted on the lifting plate 105 to move up and down. Then, the air pump 303 is activated to draw air from the air chamber 316, causing multiple adsorption holes 317 to draw air in, thereby moving the adsorption plug 401. This allows the adsorption holes 317 to adsorb onto the inner wall of the cylinder 102, fixing the cylinder 102 in place. After the welding of the cylinder 102 is completed, it can be... By turning on the drive motor 304, the incomplete gear 305 is driven to rotate, causing the incomplete gear 305 to mesh with the teeth 306, thereby driving the slide bar 301 to move. At this time, the slide bar 301 will slide on the surface of the slide rod 307, thereby changing the position of multiple arc plates 300, thereby driving the cylinder 102 to rotate and adjust its weld position. When all the teeth of the incomplete gear 305 are engaged with the teeth 306, it will disengage from the teeth 306. At this time, the adsorption hole 317 is operated to release the adsorption on the cylinder 102. Then the slide bar 301 will be reset under the action of the spring 308. Then the above operation continues to drive the cylinder 102 to rotate and change its weld position, finally adjusting the weld position of the cylinder 102 to the exhaust plate 312.

[0037] In summary, the adaptive clamping system composed of clamping plate 200 and arc plate 300, combined with the vacuum adsorption assembly formed by air cavity 316, adsorption hole 317 and one-way valve plug 401, constructs a dual fixing mechanism of "mechanical bonding + negative pressure adsorption", which significantly enhances the clamping rigidity of cylinder 102, effectively suppresses micro-deformation and displacement caused by welding heat input, and provides a stable reference for weld formation; the servo motor 206, lead screw 207, guide rod 208, three-jaw chuck 202, jaws 203, ball bearings 204, and rotary motor 205 work together to achieve rapid and accurate alignment of cylinder 102 and flange 103, greatly shortening changeover time and improving welding coaxiality; welding torch 101 and moving seat 104 The lifting screw 106 and guide rail 108, in conjunction with the rotating drive mechanism of the cylinder 102, can not only flexibly complete the all-position welding of the longitudinal weld seam of the cylinder 102 and the cylinder-flange circumferential seam, but also precisely guide the weld seam to the optimal welding posture through stepping rotation and real-time angle monitoring, significantly reducing the difficulty of operation and improving the consistency of the weld seam. In particular, the device innovatively integrates the post-weld in-situ treatment function. After welding, the rotating drive mechanism precisely adjusts the cylinder 102 to the top of the exhaust plate 312, and removes residual gas and particulate impurities inside in real time through directional airflow. This prevents weld slag from solidifying and embedding into the sealing area or stress concentration area from the source of the process, effectively eliminating potential leakage hazards and fatigue damage risks.

[0038] Example 2: Please refer to Figure 1 - Figure 11 The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: a high-efficiency welding displacement device for mud pump casing.

[0039] It also includes a vibration assembly, including a hammer ball 400 disposed in the adsorption hole 317. The hammer ball 400 can be adsorbed and moved to accumulate energy when the air pump 303 is working, and release energy to impact the surface of the cylinder 102 when the negative pressure is released. The vibration assembly includes a venting groove 402 opened inside the adsorption hole 317. A plug plate 401 is fixedly connected to the outer surface of the hammer ball 400. An air supply hole 403 is fixedly connected to the inside of the adsorption hole 317. A vibrating spring 404 fixedly connected to the plug plate 401 is fixedly connected to one side of the air supply hole 403. By setting the vibration assembly, the hammer ball 400 can be moved to hammer the cylinder 102, releasing its residual stress. When the gas flows through the adsorption hole 317, it will pull the hammer ball 400 to move, continuously pulling the hammer ball 400. After the 0-second cycle, the plug 401 will be positioned within the venting groove 402. Subsequently, external gas flows through the venting groove 402, and then the hammer 400 releases gas to strike the cylinder 102. When the air pump 303 starts to draw in air, the negative pressure acts on the plug 401 through the air outlet 403, pulling the hammer 400 inward and compressing the vibrating spring 404, thus accumulating elastic potential energy. When the plug 401 is displaced to the position of the venting groove 402, external air rushes in instantly through the venting groove 402, the negative pressure in the adsorption hole 317 drops sharply, the vibrating spring 404 releases the stored energy, and drives the hammer 400 to reset at high speed and strike the outer wall of the cylinder 102, generating high-frequency micro-amplitude vibration, which effectively intensifies the lattice structure of the weld area and promotes the relaxation of residual stress and the healing of micro-defects.

[0040] It also includes a purging assembly, including an exhaust plate 312 connected to the outlet of the air pump 303. The plate has an array of ventilation holes for blowing air onto the weld seams of the cylinder 102. The purging assembly also includes an air pipe 310, with multiple auxiliary air cylinders 321 fixedly connected to one side. One end of each auxiliary air cylinder 321 is slidably connected to a piston push rod 322 fixedly connected to the exhaust plate 312. The exhaust plate 312 is connected to the outlet of the air pump 303 via an air supply pipe 313. An air housing 320 is fixedly connected inside the air pipe 310. A piston rod 311 is fixedly connected to one side of the clamping plate 200 and slidably connected to the air housing 320. By configuring the piston rod 311 to cooperate with the air housing 320, the clamping plate 200 can be moved to drive the piston rod 311. The movement of the gas pump 303 pushes the gas into the auxiliary gas cylinder 321, thereby moving the exhaust plate 312 to adapt to different sizes of cylinder 102. The gas is discharged through the exhaust plate 312 and blows onto the weld seam of the cylinder 102. When the clamping plate 200 moves laterally under the drive of the adjusting cylinder 210, it drives the piston rod 311 to move synchronously through the side plate 309. The gas in the compressed gas shell 320 is injected into the auxiliary gas cylinder 321 through the gas pipe 310, which pushes the piston push rod 322 to extend and retract, so that the exhaust plate 312 can adaptively translate along the axial direction of the cylinder 102. When the air pump 303 is working, the outlet airflow is delivered to the exhaust plate 312 through the air supply pipe 313, and clean airflow is sprayed out from the array vent holes to directionally blow the weld seam area and simultaneously remove spatter and oxide particles.

[0041] Specifically, the adjustment cylinder 210 then adjusts the distance between the arc plate 300 and the cylinder 102, creating a gap between the adsorption hole 317 and the cylinder 102. The air pump 303 is then run again to draw air from the air chamber 316. At this time, the gas adsorption plug 401 moves and crosses the venting groove 402, storing force on the hammer ball 400, causing it to squeeze the vibrating spring 404. When the plug 401 crosses the venting groove 402, the gas flows through it, eliminating the negative pressure environment in the adsorption hole 317. The hammer ball 400, under the force of the vibrating spring 404, quickly resets and impacts the surface of the cylinder 102, causing resonance. Simultaneously, the gas drawn from the air chamber 316 by the air pump 303 is transported to the exhaust plate 312 through the air supply pipe 313. The gas is then discharged through the exhaust plate 312 and blown onto the weld seam of the cylinder 102. When the adjusting cylinder 210 drives the clamping plate 200 to move, the side plate 309 will drive the piston rod 311 to move, thereby driving the piston end of the piston rod 311 to move into the gas casing 320 and enter the gas in the compression pipe 310, thereby driving the piston push rod 322 to move in the auxiliary gas cylinder 321, thereby changing the position of the exhaust plate 312, so that the exhaust plate 312 moves together with the clamping plate 200. Then, the flange 103 is placed on the top of the three-jaw chuck 202 for fixation. Then, the servo motor 206 is operated to drive the lead screw 207 to rotate and change the position of the moving plate 209, so that the clamping plate 200 drives the cylinder 102 to move down and abut against the flange 103. Then, the welding torch 101 is operated to weld the gap between the cylinder 102 and the flange 103. Afterwards, the cylinder 102 can be rotated to cooperate with the welding torch 101 to achieve the complete welding work.

[0042] In summary, the adaptive clamping system composed of clamping plate 200 and arc plate 300, combined with the vacuum adsorption mechanism formed by air cavity 316, adsorption hole 317 and one-way valve plug 401, provides dual rigid constraints and significantly suppresses welding thermal deformation; servo motor 206, lead screw 207, guide rod 208, three-jaw chuck 202, jaws 203, ball bearings 204, and rotary motor 205 work together to achieve millimeter-level precise alignment between cylinder 102 and flange 103, greatly shortening clamping time; welding torch 101, moving seat 104, lifting screw 106, and guide rail 108 work in conjunction with the rotary drive mechanism to flexibly complete all-position welding and monitor the posture in real time. What is particularly groundbreaking is that the hammer ball 400, plug plate 401, vent groove 402, and vibrating spring 404 cleverly utilize the working airflow of the air pump 303 to drive the hammer ball 400 to strike the surface of the cylinder 102 at high frequency in the process of adsorption and energy storage, venting and release, and circulation. This actively excites the weld lattice structure through physical vibration, effectively relaxes residual stress, and inhibits the initiation of microcracks, all without the need for additional energy or complex control. The exhaust plate 312, side plate 309, piston rod 311, air shell 320, auxiliary air cylinder 321, and piston push rod 322 innovatively adopt a linkage mechanism of "clamping plate displacement and pneumatic transmission". This allows the exhaust plate 312 to automatically track the weld position according to the specifications of the cylinder 102. The airflow from the outlet of the air pump 303 blows the weld area in a directional manner through the air supply pipe 313, instantly removing spatter and oxide particles.

[0043] Example 3: Please refer to Figure 1 - Figure 11 The present invention also provides a technical solution, which differs from the technical solution of Embodiment 1 as follows: a method for efficient welding displacement of a mud pump casing, comprising the following steps: S1. In use, the cylinder 102 is first installed between two clamping plates 200. Then, the adjusting cylinder 210 is turned on to drive the clamping plates 200 to move, so that multiple arc plates 300 abut against the outer surface of the cylinder 102. After that, the welding gun 101 performs longitudinal welding on the cylinder 102. The motor 109 can drive the lifting screw 106 to rotate, thereby driving the lifting plate 105 to move. The welding gun 101 is installed on the lifting plate 105 to achieve up and down movement. S2. Subsequently, the air pump 303 is turned on to draw air from the air chamber 316, causing multiple adsorption holes 317 to draw air in, thereby moving the adsorption plug 401. This causes the adsorption holes 317 to adhere to the inner wall of the cylinder 102, fixing the cylinder 102 in place. After the welding of the cylinder 102 is completed, the drive motor 304 can be turned on to drive the incomplete gear 305 to rotate, causing the incomplete gear 305 to mesh with the teeth 306, thereby driving the slide bar 301 to move. At this time, the slide bar 301 will slide on the surface of the slide rod 307 from... By changing the position of multiple arc plates 300, the cylinder 102 is driven to rotate and its weld position is adjusted. When all the teeth of the incomplete gear 305 are engaged with the teeth 306, it will disengage from the teeth 306. At this time, the adsorption hole 317 is operated to release the adsorption on the cylinder 102. Then the slide bar 301 will be reset under the action of the spring 308. Then the above operation continues to drive the cylinder 102 to rotate and change its weld position. Finally, the weld position of the cylinder 102 is adjusted to the exhaust plate 312. S3. Subsequently, the adjusting cylinder 210 adjusts the distance between the arc plate 300 and the cylinder 102, creating a gap between the adsorption hole 317 and the cylinder 102. The air pump 303 is then run again to draw air from the air chamber 316. At this time, the gas adsorption plug 401 moves and crosses the venting groove 402, storing force on the hammer 400, causing it to squeeze the vibrating spring 404. When the plug 401 crosses the venting groove 402, the gas flows through it, eliminating the negative pressure environment in the adsorption hole 317. Under the force of the vibrating spring 404, the hammer 400 quickly resets and strikes the surface of the cylinder 102. It generates resonance, and at the same time, the gas drawn from the air chamber 316 by the air pump 303 will be delivered to the exhaust plate 312 through the air supply pipe 313. After the gas is discharged through the exhaust plate 312, it will be blown to the weld of the cylinder 102. At the same time, when the adjusting cylinder 210 drives the clamping plate 200 to move, the side plate 309 will drive the piston rod 311 to move, thereby driving the piston end of the piston rod 311 to move in the air shell 320 and enter the gas in the compression air pipe 310, thereby driving the piston push rod 322 to move in the auxiliary air cylinder 321, thereby changing the position of the exhaust plate 312, so that the exhaust plate 312 moves together with the clamping plate 200. S4. Then, the flange 103 is placed on top of the three-jaw chuck 202 and fixed. Then, the servo motor 206 drives the lead screw 207 to rotate and change the position of the moving plate 209, so that the clamping plate 200 moves the cylinder 102 down to contact the flange 103. Then, the welding gun 101 is operated to weld the gap between the cylinder 102 and the flange 103. Then, the cylinder 102 is rotated to cooperate with the welding gun 101 to complete the welding work.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency welded displacement device for a mud pump casing, comprising a base (100), a cylinder (102), and a flange (103), characterized in that, Also includes: Two opposing clamping plates (200) are provided with multiple arc plates (300) for contacting the outer surface of the cylinder (102); A driving mechanism is used to drive the clamps (200) to move towards or away from each other; A welding mechanism, comprising a welding torch (101) and an adjustment assembly for driving the welding torch (101) to move; A rotary drive mechanism is used to drive multiple arc plates (300) to move synchronously, so as to drive the clamped cylinder (102) to rotate. The adsorption assembly includes an air cavity (316) disposed on the arc plate (300) and an adsorption hole (317) communicating with the air cavity (316). The air cavity (316) is connected to an air pump (303) through an airflow pipe. The vibration assembly includes a hammer (400) disposed in the adsorption hole (317), the hammer (400) being adsorbed and moved to accumulate energy when the air pump (303) is working, and releasing energy to strike the surface of the cylinder (102) when the negative pressure is released; The purging assembly includes an exhaust plate (312) connected to the outlet of the air pump (303) for blowing air onto the weld seam of the cylinder (102).

2. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The driving mechanism includes a vertical plate (212), a positioning cylinder (210) whose output end is fixedly connected to a clamping plate (200) on one side of the vertical plate (212), and a positioning rod (211) that is slidably connected to the vertical plate (212) on one side of the clamping plate (200).

3. The high-efficiency welding displacement device for mud pump casing according to claim 2, characterized in that: A positioning seat (201) is fixedly connected to the top of the base (100). A lead screw (207) is rotatably connected to the top of the positioning seat (201). A sliding plate (209) is threadedly connected to the outer surface of the lead screw (207). A guide rod (208) for sliding connection of the sliding plate (209) is fixedly connected to the top of the positioning seat (201). The sliding plate (209) is fixedly connected to the vertical plate (212). A servo motor (206) for driving the lead screw (207) to rotate is fixedly connected to the bottom of the positioning seat (201).

4. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The rotary drive mechanism includes multiple slide bars (301) slidably connected within the clamping plate (200), and a common connecting rod (302) connecting the multiple slide bars (301). A positioning frame (323) is fixedly connected to one side of the clamping plate (200), and an incomplete gear (305) is rotatably connected inside the positioning frame (323). A drive motor (304) for driving the incomplete gear (305) to rotate is fixedly connected to the top of the positioning frame (323). One side of the slide bar (301) is fixedly connected to a tooth (306) that meshes with an incomplete gear (305). One side of the clamping plate (200) is fixedly connected to a positioning plate (319). The top of the common connecting rod (302) is fixedly connected to a positioning laser (318) that is adapted to the positioning plate (319). The clamping plate (200) is provided with a slide rod (307) for the slide bar (301) to slide. A spring (308) is sleeved on the outer surface of the slide rod (307).

5. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The adsorption assembly also includes a connecting pipe (314) for connecting multiple arc plates (300), and a valve nozzle (315) is connected to the bottom of the connecting pipe (314).

6. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The vibration assembly includes a venting groove (402) opened inside the adsorption hole (317), a plug (401) fixedly connected to the outer surface of the hammer (400), an air supply hole (403) fixedly connected inside the adsorption hole (317), and a shaking spring (404) fixedly connected to the plug (401) on one side of the air supply hole (403).

7. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The purging assembly also includes an air pipe (310), one side of which is fixedly connected to a plurality of auxiliary air cylinders (321). One end of the auxiliary air cylinder (321) is slidably connected to a piston push rod (322) fixedly connected to an exhaust plate (312). The exhaust plate (312) is connected to the outlet of an air pump (303) through an air supply pipe (313). An air shell (320) is fixedly connected inside the air pipe (310). One side of the clamping plate (200) is fixedly connected to a piston rod (311) slidably connected to the air shell (320).

8. The high-efficiency welding displacement device for mud pump casing according to claim 3, characterized in that: A three-jaw chuck (202) is rotatably connected to one side of the positioning seat (201). The top of the three-jaw chuck (202) is provided with a plurality of jaws (203) for supporting the flange (103). A ball bearing (204) is rotatably connected to one side of the jaws (203). A rotary motor (205) for driving the three-jaw chuck (202) to rotate is provided on one side of the positioning seat (201).

9. The high-efficiency welding displacement device for mud pump casing according to claim 1, characterized in that: The adjustment assembly includes a movable base (104), a lifting screw (106) is rotatably connected to the top of the movable base (104), a smooth rod (107) is fixedly connected to the top of the movable base (104), a lifting plate (105) is threadedly connected to the outer surface of the lifting screw (106), the lifting plate (105) is slidably connected to the smooth rod (107), a motor (109) for driving the lifting screw (106) to rotate is fixedly connected inside the movable base (104), and a guide rail (108) for sliding the movable base (104) is fixedly connected to one side of the base (100).

10. A method for efficient welding displacement of a mud pump casing, comprising a device for efficient welding displacement of a mud pump casing according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Clamping and longitudinal seam welding: Place the cylinder (102) between two clamping plates (200) and operate the drive mechanism to make the clamping plates (200) abut against the outer surface of the cylinder (102) for clamping and fixing; S2. Start the air pump (303) to adsorb and fix the cylinder (102) through the adsorption hole (317); drive the rotary drive mechanism to make the multiple arc plates (300) swing synchronously and drive the cylinder (102) to rotate to adjust the weld position. S3. Adjust the distance between the arc plate (300) and the cylinder (102) so that a gap is formed between the adsorption hole (317) and the inner wall of the cylinder (102); restart the air pump (303) to make the vibration component run to impact the surface of the cylinder (102).

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