6932 results about "Pipe fitting" patented technology

The invention relates to the technical field of quenching, and particularly discloses a quenching device and method for stainless steel pipe machining. The quenching device comprises a bottom box, a quenching box is fixedly installed above the bottom box, one side of the quenching box is open and provided with a sealing door, the sealing door is movably connected with the quenching box, and the end, close to the quenching box, of the bottom of the sealing door is connected with a base; a turntable is rotationally mounted on the base, a plurality of fixing cones are arranged around the top of the turntable, and a to-be-quenched pipe fitting is sleeved on the fixing cones. Through the arrangement of the outer ring and the inner ring, synchronous fixing of a plurality of pipe fittings is achieved, rotation of the driving disc pushes the extrusion pieces to evenly expand outwards along the sliding grooves, and the extrusion pieces can be reset in combination with the elasticity of the springs; through sliding constraint of the limiting blocks and the limiting grooves, it is guaranteed that deviation does not occur in the extrusion process, the outer ring provides reverse supporting to form clamping force, the clamping safety of the thin-wall pipe fitting is remarkably improved through the design, and the device is particularly suitable for quenching of stainless steel pipes prone to deformation.

The invention discloses a cutting device for a trolley frame and a production system of the cutting device, and relates to the technical field of laser cutting equipment.The cutting device comprises a clamping disc, a cutting head, a core rod and a transferring assembly; one end of the core rod is used for being inserted into a pipe fitting to do reciprocating motion, the core rod is coaxially sleeved with the slag scraping ring, the multiple separation nozzles are distributed around the core rod in the circumferential direction at intervals, a cooling channel is formed in the core rod, one end of the cooling channel communicates with the separation nozzles, and the other end of the cooling channel communicates with the separation nozzles. The slag scraping ring comprises a contact part with a soft outer ring, and can axially swing back and forth relative to the core rod; when the core rod extends into the pipe, the contact part swings in the direction close to the separation spray head and drives the opening of the separation spray head to horizontally face the direction deviating from the clamping disc; and when the core rod retreats from the interior of the pipe, the contact part swings in the direction away from the separation nozzle and drives the opening of the separation nozzle to outwards face the radial direction of the core rod. The aluminum alloy pipe fitting cutting device has the effect of improving the aluminum alloy pipe fitting cutting efficiency.

The invention discloses a heat supply pipeline welding seam detection device, and relates to the technical field of heat supply pipeline processing, the heat supply pipeline welding seam detection device comprises a transmission mechanism 1 and a detection bin, the transmission mechanism 1 is provided with an inverted U-shaped support, the bottom wall of the horizontal section of the inverted U-shaped support is slidably connected with magnetization members in a front-back symmetrical manner, and the inverted U-shaped support is provided with a clamping member and a pretreatment mechanism; a detection bin is arranged on the left side of the first conveying mechanism, and a transferring mechanism, a marking mechanism and a second conveying mechanism are arranged on the detection bin. Through cooperation of the driving assembly and the brushing assembly, the outer wall of the to-be-detected pipe fitting is brushed, the situation that magnetic powder, oxide skin, burrs and the like adhere to the surface of the pipe fitting, the magnetic powder gathering phenomenon caused by non-defect factors is caused, and misjudgment occurs in the detection process is avoided, through cooperation of the driving assembly and the flushing assembly, the pipe fitting is flushed, and the detection efficiency is improved. The scraped impurities are prevented from being attached to the outer wall of the to-be-detected pipe fitting, and meanwhile, the pre-wetting treatment can be carried out, so that the fluorescent magnetic suspension is helped to cover the surface of the pipe fitting more uniformly.

The utility model discloses a pipe fitting cutting device for preparing a circular pipe truss, which comprises a support frame, a support table top is arranged at the upper end of the support frame, pipe fitting clamping seats are arranged on the two sides of the upper end of the support table top, each pipe fitting clamping seat comprises a lower support, an upper support frame, a side support frame and a locking seat, the upper support frame is hinged to the upper end of the lower support frame, and the side support frame is hinged to the lower end of the upper support frame. According to the pipe fitting cutting device, through cooperation of the upper supporting frame and the lower support and use of the upper pressing base, stability of a pipe fitting in the cutting process is guaranteed, cutting deviation caused by movement of the pipe fitting is avoided, the cutting precision is remarkably improved, and the cutting efficiency is improved. And through cooperative work of the moving set, the adjusting set and the cutting-off set, it is guaranteed that the pipe cutter accurately cuts the pipe. And through automatic control of the driving air cylinder and the lifting adjusting air cylinder, the manual adjusting time is shortened, and the continuity and speed of cutting operation are improved.

The invention relates to the technical field of pipe fitting laser welding, and discloses a laser welding device and process for machining a large-diameter thin-wall low-thermal-expansion alloy pipe, and the laser welding device for machining the large-diameter thin-wall low-thermal-expansion alloy pipe comprises a machine body, a welding table arranged on one side of the machine body, and a supporting assembly arranged on the welding table and used for supporting. The two alloy pipes are arranged at the top of the supporting assembly and used for welding, the laser welding gun is arranged on the welding table and located on one sides of the alloy pipes, the rotating motor is arranged on one side of the machine body, the clamping base is arranged on one side of an output shaft of the rotating motor, and the clamping unit is arranged on the clamping base. Local stress concentration is avoided through cooperation of air bag clamping and a moving plate, an air bag cavity of the clamping assembly is matched with the moving plate of the auxiliary assembly to form a two-way pressure control structure, when the air bag is inflated and expanded, directional expansion can be achieved, the clamping contact area can be enlarged, and thin wall sinking caused by point contact or line contact is avoided.

The present invention discloses a storage pole for facilitating telescopic control adjustment, comprising a main support pipe fitting, a fixed sleeve being installed at a front end of the main support pipe fitting, a limit adjustment mechanism being installed on a surface of an upper end of the fixed sleeve, and the limit adjustment mechanism being used for limiting and locking the telescopic adjustment pipe. According to the present invention, the limit adjustment mechanism facilitating assembling and fixing is installed at the front end of the main support pipe fitting, a limiting pin can be quickly controlled to be separated from a limit slot hole on the surface of the telescopic adjustment pipe by a pressing manner, thereby being capable of freely sliding the telescopic adjustment pipe to quickly adjust a length of the entire storage pole.

The utility model relates to the technical field of pipe cutting devices, in particular to an automatic cutting device for a three-way pipe fitting. According to the technical scheme, the device comprises a base, a sliding table is slidably mounted at the top of the base, a single-pipe-head clamping plate is fixedly mounted at the top end of the sliding table, a protective baffle is fixedly mounted on the side, away from the sliding table, of the top of the base, a transverse moving frame plate is slidably mounted at the top end of the sliding table, and a first rubber column head is clamped and inserted into the transverse moving frame plate; a double-pipe-head clamping assembly is fixedly installed at the top end of the base, two clamping plates are arranged on the double-pipe-head clamping assembly, and second rubber column heads are fixedly installed on the inner side walls of the clamping plates. By means of the single-pipe-head clamping plate and the double-pipe-head clamping assembly, any port of the three-way pipe can be clamped and fixed, the pipe positioning difficulty is reduced, the rubber column heads support the inner walls of the pipe heads, the deformation probability during pipe cutting can be reduced, cutting is convenient, and the production efficiency is effectively improved.

The invention provides an LNG ship pipe fitting fatigue life modeling optimization method and system. The method comprises the steps that a fatigue life simulation model of a low-temperature pipe fitting is established; fatigue state constraint is applied to a fatigue damage structure in the fatigue life simulation model based on the load spectrum and the temperature spectrum at the monitoring node, and a damage constraint condition of the target low-temperature pipe fitting in a vibration state is obtained; determining the thermal fatigue loss of fatigue life simulation under different low-temperature thermal cycle loads according to the thermal fatigue damage and load spectrum characteristics of each connection part under different low-temperature thermal cycle loads; cost optimization is carried out on fatigue life control parameters of the fatigue life simulation model according to the damage constraint conditions and all the thermal fatigue losses, optimal cost parameters for fatigue life simulation under the thermal-vibration load working condition are obtained, and the local grid density of the fatigue life simulation model is adjusted based on the optimal cost parameters. By the adoption of the scheme, parameter cost optimization of the fatigue life simulation model of the LNG ship pipe fitting under the thermal-vibration load working condition can be achieved.

The invention relates to the technical field of stainless steel pipe fitting machining, and provides stainless steel elbow ball passing shaping equipment and a stainless steel elbow ball passing shaping process. The workbench is arranged on the rack, and a lower die is rotationally connected to the workbench; the downward pressing mechanism is arranged above the workbench in a lifting mode, the downward pressing end of the downward pressing mechanism is rotationally connected with an upper mold, and a clamping space used for clamping an elbow is formed between the upper mold and the lower mold; the pushing mechanism is arranged on the rack and adjacent to the workbench, and the pushing end of the pushing mechanism faces the lower die and is provided with a universal core rod; the ball body is movably arranged on the rack and located between the lower die and the pushing mechanism. According to the technical scheme, the direction of the end opening of the elbow is changed through rotation of the die, bidirectional ball passing is achieved, the problems of inner wall ovality deviation, local wrinkles, uneven weld joints and the like generated in the bending process can be comprehensively corrected, local stress concentration of one-way ball passing is avoided, and the inner diameter roundness and the surface quality are remarkably improved.

The invention discloses a ship body pipe fitting welding device for ship manufacturing, relates to the technical field of welding devices, and solves the problems that the contact area of a ship body pipe fitting welding point location is small, the bearing capacity of a welding position is weak, the later repair rate is high, and the service life is short. The ship body pipe fitting welding device for ship manufacturing comprises a device rack; the pipe fitting conveying assemblies are mounted on the two sides in the device rack; and the butt welding seam structure is mounted in the center of the interior of the device rack and located between the two pipe fitting conveying assemblies. According to the method, the mode that the weld joint is reserved and the groove is ground is adopted, the edge defects of the ship body pipe fitting can be eliminated, it is ensured that the root of the weld joint is completely penetrated, and the defect risks of incomplete penetration, slag inclusion and the like are reduced. Meanwhile, the concave part of the groove is polished, so that the effective welding seam area can be increased, the bearing capacity and structural integrity of the welding position of the ship body pipe fitting are improved, and the service life of the ship body pipe fitting can be effectively prolonged.

The utility model discloses an injection mold convenient to demold. The injection mold convenient to demold comprises a top plate, an upper mold base, a lower mold base, a bottom plate, a demolding driving mechanism, a first core-pulling insert, a second core-pulling insert and a third core-pulling insert, a first cavity seat is arranged at the bottom of the upper die seat, a second cavity seat is arranged at the top of the lower die seat, two symmetrically-arranged forming cavities are formed between the first cavity seat and the second cavity seat, each forming cavity is provided with a first pipe opening, a second pipe opening and a third pipe opening, and the first core-pulling insert is arranged at the side end of the first pipe opening. The second core-pulling insert is arranged at the side end of the second pipe opening, the third core-pulling insert is arranged at the side end of the third pipe opening, and the demolding driving mechanism is connected with the first core-pulling insert. The first core-pulling insert, the second core-pulling insert and the second core-pulling insert are respectively arranged on the pipe orifices in different directions of the forming cavity, so that independent core-pulling operation of the three-way pipe fitting in all directions can be realized, mutual interference in the core-pulling process is effectively avoided, and the demoulding smoothness of a product is improved.

The invention relates to the technical field of sleeve joint structures, and discloses an oil sleeve air-tight seal buckle structure which comprises two oil sleeve bodies and a joint pipe fitting, external threads are arranged on the outer sides of the connecting ends of the two oil sleeve bodies, and internal threads matched with the external threads are arranged on the inner sides of the two ends of the joint pipe fitting. After the opposite end faces of the two oil casing bodies abut against each other, the oil casing further comprises port clamping pieces detachably arranged at the two ends of the connector pipe fitting. According to the air-tight seal buckle structure of the oil sleeve, the port clamping pieces generate fastening force when being installed at the two ends of the connector pipe fitting, the end of the oil sleeve body is further fastened, and axial relative sliding between the oil sleeve body and the connector pipe fitting is limited. In the installation process of the port clamping piece, the load sharing piece is driven to move in the radial direction of the oil sleeve body and abut against the peripheral wall of the oil sleeve body, an auxiliary supporting structure is formed between the peripheral wall of the oil sleeve body and the inner wall of the connector pipe fitting, and stress concentration of threads on the oil sleeve body and the connector pipe fitting is reduced.

The invention relates to the technical field of earth dam buildings, and discloses an ecological earth dam which comprises a dam body, an anti-seepage body and root system developed plants. The anti-seepage body comprises a first core wall body, a second core wall body and a steel pipe fitting, the first core wall body is arranged at the bottom of the dam body, one end of the second core wall body is connected with the first core wall body, the other end of the second core wall body extends in the vertical direction and is flush with the top of the dam body, the steel pipe fitting is arranged in the vertical direction, and one end of the steel pipe fitting is inserted into the first core wall body; a cavity is formed in the steel pipe fitting, an extension pipe extending in the width direction of the dam body is arranged on the outer wall of the steel pipe fitting, one end of the extension pipe is communicated with the cavity, the other end of the extension pipe penetrates through the second core wall body to extend towards the upstream slope surface of the dam body, and a water permeable hole is formed in the extension pipe; the root system developed plant comprises an overground part and an underground part, the overground part is planted on the upstream slope surface of the dam body, the underground part extends towards the direction of the water permeable holes, and the dam body is effectively reinforced through the cooperation of the anti-seepage body and the root system developed plant.

The invention discloses a mitre elbow waist section outer circular seam welding device, and particularly relates to the technical field of mitre elbow welding, which comprises a base, a fixing frame, a chuck for fixing a mitre elbow, a welding head fixing block and a welding head arranged at the top of the welding head fixing block, a central processing unit and a space adjusting mechanism are arranged on the top of the base, the space adjusting mechanism is used for adjusting the space position of the welding head, and the welding device further comprises a space distance collecting module and an included angle collecting module. The problem that in the welding process of the mitre waist elbow pipe multi-section splicing structure, due to weld joint space deviation, a welding head cannot be accurately aligned is solved, the weld joint distance and posture data are collected in real time, the space position of the welding head is dynamically adjusted, and automatic sensing and deviation rectifying of weld joint deviation are achieved; and the welding precision, the welding seam forming quality and the overall welding automation level are effectively improved, and the method is suitable for high-precision welding scenes of various complex pipe fittings.

The invention discloses an intelligent suspension conveying device for a steel structure workshop, and relates to the technical field of suspension conveying, the intelligent suspension conveying device comprises a beam frame, a stand column is fixedly mounted on the side of the bottom of the beam frame, and a stable supporting seat is fixedly mounted at the bottom of the stand column; and a guide assembly. According to the intelligent hanging and conveying device for the steel structure workshop, steel structure pipe fittings penetrate through penetrating grooves to be placed above positioning rods by workers, gaps among the multiple positioning rods can correspond to the surfaces of the pipe fittings on the bottom layer, so that the pipe fittings are prevented from rolling in the hanging and conveying process, in addition, the multiple layers of pipe fittings are stacked between side connecting plates in a staggered mode, and the conveying efficiency is improved. The side connecting plates can prevent the outer sides of the pipe fittings in the stacked state from being directly exposed in the conveying path, and the pipe fittings are prevented from being rubbed with the support, the stand column or other conveying units. The limiting clamping pieces installed on the surfaces of the side connecting plates make contact with the surfaces of the pipe fittings on the outer side, so that the friction force between the limiting clamping pieces and the surfaces of the pipe fittings is increased, and the pipe fittings are prevented from shaking in the hanging transportation steering process.

The invention discloses a cutting and polishing device for an automobile cooling water pipe, and relates to the technical field of pipe fitting machining, the cutting and polishing device comprises a base, two fixing plates and two moving parts are symmetrically arranged on the two sides of the upper end of the base, the two moving parts are located between the two fixing plates, and driven parts and gears are rotationally installed on the moving parts; and two clamping pieces used for fixing a pipe fitting are symmetrically installed in the driven piece, driving structures are installed on the two fixing plates, the driving structures are connected with the gear and drive the gear to rotate, the gear is connected with the driven piece in an engaged mode, and a first through pipe opening is formed in the middle of each fixing plate. The relative distance between the two moving parts is adjusted through the moving structure arranged on the base, so that the pipe fitting cutting device can adapt to pipe fittings with different lengths, the pipe fittings with proper lengths can be cut in the follow-up process, and the universality and flexibility of the device are improved.

A deep pipe product hole lining pasting device comprises a pipe fitting supporting displacement unit, a lining pasting unit, a gluing unit, a cantilever conveying unit, a supporting device and a base, the pipe fitting supporting displacement unit comprises an adjustable supporting mechanism, a chuck, a rotary driving mechanism and an axial adjusting mechanism, and the adjustable supporting mechanism is installed on the base through a guide rail sliding block; the rotary driving mechanism is installed at the tail end of the base and used for bearing the chuck, and the axial adjusting mechanism is fixed to the middle of the base and connected with the adjustable supporting mechanism. The cantilever conveying unit comprises a transplanting mechanism and a cantilever mechanism, the cantilever mechanism is installed on a transplanting mechanism platform, and the transplanting mechanism is installed at the front end of the base; the lining pasting unit comprises a swing mechanism, a lining supporting mechanism and a clamping jaw used for being matched with the supporting device. According to the device, automatic pasting, supporting solidification and gap glue supplementing of linings in medium-diameter deep pipe products can be achieved, the problem that manual operation is difficult is solved, and the automation degree and the production efficiency are effectively improved.

The invention relates to the field of mechanical engineering, discloses a quick-connection welding control method and system for aluminum alloy pipe fittings, and aims to solve the problems that in the prior art, heat input control is not accurate, the positioning and centering efficiency is low, parameter adjustment lacks self-adaptability, and the multivariable cooperative control capacity is insufficient. The method comprises the following steps: acquiring point cloud data of the end surface of a pipe fitting through three-dimensional scanning, and calculating a six-degree-of-freedom butt joint deviation by adopting an improved iterative nearest point algorithm; a compensation track is generated based on multi-objective optimization, and the six-degree-of-freedom parallel robot is driven to achieve fine adjustment; and after the butt joint deviation is stable, welding is started according to a sectional type current increasing strategy, and the wire feeding and welding speed is dynamically adjusted in combination with fusion depth feedback and visual detection. According to the scheme, high-precision automatic butt joint, stable molten pool control and online defect closed-loop treatment are achieved, the welding quality consistency and the production efficiency are remarkably improved, and the method is suitable for efficient and high-quality connection of various aluminum alloy pipe fittings.

The invention discloses a thermal insulation pipe fitting thermal insulation performance detection device, and particularly relates to the technical field of thermal insulation performance detection devices.The thermal insulation pipe fitting thermal insulation performance detection device comprises an outer frame, a detection assembly is slidably installed on the upper portion of the left side wall and the upper portion of the right side wall of the inner surface of the outer frame jointly, and a limiting assembly is fixedly installed on the lower portion of the outer surface of the detection assembly; an observation assembly is fixedly installed on the lower portion of the left side wall and the lower portion of the right side wall of the inner surface of the outer frame. According to the thermal insulation performance detection device for the thermal insulation pipe fitting, through the arranged detection assembly, in the using process, the detection assembly can be matched with the hydraulic cylinder to move downwards, then thermal insulation performance detection is conducted on the thermal insulation pipe fitting, meanwhile, the detection assembly is matched with the limiting assembly, and the thermal insulation pipe fitting can be limited; and after being limited, the limiting component is matched with the observation component, so that rotary thermal insulation performance detection on a plurality of thermal insulation pipe fittings is realized, the detection process of the whole device is relatively short, and sampling detection on the thermal insulation pipe fittings is convenient to realize.

The invention belongs to the technical field of welding equipment, and particularly relates to an intelligent high-speed laser welding device for a longitudinal welded pipe, which comprises a rack, a high-precision clamping mechanism, a multi-degree-of-freedom motion platform, a laser welding head and an intelligent control system. The clamping mechanism adopts hydraulic pressure to drive an arc-shaped clamping plate to realize self-adaptive centering and flexible clamping of the pipe fitting; an X-direction module of the motion platform adopts a servo motor to be matched with a synchronous belt (or a ball screw) for transmission, and a Y-direction module is driven by a hydraulic cylinder, so that precise track control of the laser welding head is jointly realized; the intelligent control system integrates visual tracking of welding seams, infrared monitoring of a molten pool and laser detection of deformation, and welding parameters and motion trails are dynamically adjusted by calculating a welding quality coefficient in real time and based on a threshold value and a residence criterion. According to the method, the problems of welding seam tracking lag, unstable molten pool state, thermal deformation compensation deficiency and the like in high-speed welding are solved, and self-adaptive optimization and full data tracing in the welding process are achieved.

The invention relates to the technical field of pipe fitting connection, in particular to a plastic pipe fitting connecting structure which comprises a connecting mechanism used for connecting a first pipe fitting and a second pipe fitting, and annular threaded sections are arranged on the outer side of the first pipe fitting and the outer side of the second pipe fitting. According to the connecting mechanism, the threaded ring is in threaded connection with the pipe fitting; the locking piece is adopted for achieving mutual locking matching between the connecting piece and the fixing piece, the connecting reliability of the connecting piece and the fixing piece is improved, the pressing piece and the locking piece are matched to extrude the sealing gasket, the better sealing effect is achieved, the fixing piece is precisely limited through the limiting piece, and the sealing effect is improved. Meanwhile, the connecting stability of the two sets of connecting pieces is improved through mutual locking between the two semicircular hoop plates of the auxiliary piece, the overall stability of the connecting mechanism is synchronously improved, and the two pipe fittings are firmly and tightly connected together step by step under multi-stage mutual matching of the connecting pieces, the locking pieces, the fixing pieces, the locking pieces, the pressing pieces, the limiting pieces and the auxiliary piece.

The invention discloses a pipe fitting positioning and welding device with a surrounding structure, and relates to the technical field of welding, the pipe fitting positioning and welding device comprises a supporting seat, side supporting frames are fixedly mounted at the two ends of the top of the supporting seat, and active clamping mechanisms are mounted in the side supporting frames to position and fix pipe fittings; a supporting seat is installed on the top face of the side supporting frame, a surrounding welding mechanism is installed in the middle of the top face of the supporting seat and used for conducting surrounding type welding on pipe fittings, telescopic plates are installed on the front side and the rear side of the side supporting frame, and the inner ends of the telescopic plates are connected with edge grinding mechanisms. The problems of shaking deviation, low adaptability, untight butt joint, insufficient welding strength and the like which are prone to occurring in the pipe fitting welding process are cooperatively solved, the pipe fitting positioning stability and the structural adaptability are improved, the welding quality is comprehensively guaranteed through the links of pretreatment, precise welding, auxiliary cleaning and the like, energy consumption is reduced, and the operation efficiency is improved.

The invention relates to the technical field of pipe fitting welding, and discloses a buckle type pipe fitting welding machining device and a welding method.The buckle type pipe fitting welding machining device comprises first pipelines and a second pipeline, the two first pipelines or the first pipeline and the second pipeline are in coaxial buckle butt joint, and moving assemblies are arranged in the first pipelines and the second pipeline in a sliding mode; a rotating rod is arranged between the two moving assemblies, a first end plate abutting against the inner wall of the pipeline is arranged on the rotating rod, a dislocation triggering mechanism is arranged on the first end plate and comprises a first triggering rod and a second triggering rod which are inserted into the two ends of the first end plate, and a welding wire for welding the butt joint gap of the pipeline is further arranged on the rotating rod. The position of the first end plate at the joint of the two first pipelines or the joint of the first pipeline and the second pipeline is adjusted by driving the crawler belt assembly, when a triangular block on the first end plate abuts against the joint of the two pipelines, movement of the driving crawler belt assembly is stopped, and positioning of the rotating rod in the axial direction is completed.

The invention relates to the technical field of pipeline supports, and discloses a pressure vessel pipeline supporting device. During working, firstly, one end, deviating from a guide piece, of a guide rod penetrates through a supporting plate and then is fixed through a locking piece, the fixing position of the locking piece is adjusted, and then an adjusting elastic piece is adjusted; the adjusting elastic piece applies pre-tightening force between the guiding piece and the supporting plate, and then the adjusting sleeve is installed on the adjusting rod in a matched mode. The guiding piece is installed on the outer wall of the pressure container in an abutting mode, so that a pipeline on the pressure container is arranged in the inner ring buckle, then the outer ring buckle is installed on the inner ring buckle in a buckled mode and fixed, and auxiliary supporting and stabilizing of the pipeline are completed. By adjusting the position of the locking piece, the compression degree of the adjusting elastic piece can be changed, and therefore the supporting force of the supporting and guiding assembly on the pressure container is adjusted. The supporting device can be dynamically adjusted in severe weather, supporting looseness is prevented, and the stability of pipelines of a top-heavy structure such as a pressure guiding pipe fitting on the pressure container is improved.

The invention discloses a welding machine for stainless steel pipeline pipe fitting machining, and belongs to the technical field of stainless steel pipeline welding. The welding machine comprises a machine body, a vertical plate is arranged on the upper surface of the machine body, a motor is connected to the surface of the vertical plate through bolts, a mechanical arm is arranged on the upper surface of the machine body, and the machine body completes welding through the mechanical arm; the output end of the motor is fixedly connected with a connecting shaft; a supporting block is arranged on the upper surface of the machine body, and a long pin is rotationally arranged in the supporting block. According to the welding machine for stainless steel pipeline pipe fitting machining, when a pipeline needs to be clamped, the pipeline is placed on a lower clamping plate, then an upper clamping plate is rotated, after an auxiliary plate enters a connecting block, a clamping block enters a clamping groove, at the moment, the pipeline is clamped and fixed through the upper clamping plate and the lower clamping plate, and in the working process, a motor can drive the pipeline to rotate; and meanwhile, the cleaning plate is in a working state, so that the welding slag is not adhered to the machine body, and the cleaning of workers is facilitated.

The application provides a heavy truck axle housing manufacturing method, which comprises the following steps: selecting a ladder-shaped pipe blank, firstly performing axial annular material supplementing pre-expanding to obtain a pre-expanding pipe blank with an upper flat side, a lower side and front and rear convex sides, the wall thickness of the upper flat side is almost not thinned, and the wall thickness gradually decreases from the upper side to the lower side along the annular direction; and performing final expanding after annealing to obtain an axle housing pipe, the upper side of the pre-expanding pipe blank becomes a front flat surface with a bell-shaped additional front cover, the front and rear sides are shaped into a H-shaped side beam, the lower side becomes a semispherical rear oil cover, and the wall thickness of the front flat surface and the side beam is increased. The pre-expanding die is composed of left and right pressing heads, left and right sliding dies, an upper control die and a lower control die, the cavity axial width of the upper flat area of the upper control die is greater than that of the front and rear convex sides. The manufactured heavy truck axle housing is free of welds and oil leakage, the wall thickness of the front flat surface and the side beam of the axle housing is large, the bending and torsion resistance is improved, the diameter expansion rate is large during hydraulic expanding, the wall thickness thinning rate is small, the forming quality is good, and the material utilization rate is high.

The invention discloses a transverse conveying device for pipe fittings, and belongs to the technical field of pipe fitting conveying. The pipe fitting conveying device comprises a pipe fitting conveying mechanism, and the pipe fitting conveying mechanism comprises a conveying frame, a plurality of conveying rollers, a conveying roller driving mechanism, a transverse conveying mechanism arranged on one side or two sides of the conveying frame and a lifting mechanism used for jacking up pipe fittings on the conveying rollers. The transverse conveying mechanism comprises a conveying arm shaft, a plurality of transverse conveying arms and a rotation driving mechanism, a guide mechanism used for guiding the pipe fittings to the transverse conveying arms is further arranged on the conveying frame, the guide mechanism comprises a plurality of guide plates, the guide plates are arranged in the length direction of the conveying frame, and the bearing surfaces of the guide plates are obliquely arranged in a mode that the inner portions are high and the outer portions are low. The overall layout is compact, the workshop height does not need to be adjusted, the workshop construction cost is reduced, the pipe conveying process is stable, and the safety of equipment and personnel is ensured; the pipe fitting conveying process is easy to operate, and the labor cost and the possibility of misoperation are reduced.

The embodiment of the invention provides a pipe fitting connector turning precision control method and system, and relates to the technical field of pipe fitting connector turning precision control. The method comprises the following steps: before turning a pipe fitting joint, acquiring inertial sliding data of a main shaft and micro-motion response data of a feed shaft; according to the inertial sliding data of the main shaft, obtaining an operation condition index of the main shaft; according to the micro-motion response data of the feed shaft, a gap condition index of the feed shaft is obtained; the operation condition index of the main shaft and the gap condition index of the feed shaft are combined to obtain a machine tool state index; according to the machine tool state index, adjusting machining parameters of turning of the pipe fitting connector; obtaining a quality inspection result after the pipe fitting joint is turned; and according to the quality inspection result, the adjustment strategy of the machining parameters is optimized. According to the pipe fitting connector turning precision control method and system, the turning precision of the pipe fitting connector can be improved, and the qualification rate of the pipe fitting connector can be increased.

The utility model provides a steam system which comprises a steam generator and an inner container, and the steam generator is used for generating steam; the steam pipe fitting is arranged on the inner container in a penetrating mode, and one end of the steam pipe fitting is connected with the steam generator; the flow blocking piece is arranged at the other end of the steam pipe fitting, at least part of the flow blocking piece and a steam outlet of the steam pipe fitting are opposite and arranged in a spaced mode, a flow blocking channel is defined by the flow blocking piece and at least part of the steam pipe fitting, and the flow blocking channel is communicated with a cavity of the inner container. And steam in the steam pipe fitting passes through the flow blocking channel and then enters the cavity of the inner container. By means of the technical scheme, the technical problem that in the prior art, noise of a steam system is large can be solved.

The invention relates to the technical field of metal laser cutting, and provides a laser cutting machine for electric power iron tower pipe fittings, which comprises a worktable and a bracket mounted at the top of the worktable, and rotating mechanisms are symmetrically mounted at the top end of the workbench at the bottom of the support, clamping mechanisms are arranged on one sides of the rotating mechanisms, third electric sliding tables are mounted at the bottoms of the clamping mechanisms, and placing grooves are symmetrically fixed to one side of the top of the workbench. By arranging the clamping mechanism, arranging the bidirectional fixing blocks in the shell and arranging the four sets of clamping blocks in the fixing frame, the two ends of a pipe fitting can be clamped in the middle at the same time, double clamping of the pipe fitting is achieved, the front set of clamping points and the rear set of clamping points work cooperatively, deviation during cutting is avoided, cutting force is effectively dispersed, vibration is reduced, and the cutting efficiency is improved. The machining precision is improved, linkage control over rotation and translation is carried out while the pipe fitting is clamped, continuous cutting of complex curves can be achieved, manual intervention is reduced, and the machining period is shortened.