202 results about "Cast iron pipe" patented technology

The application discloses a nodular cast iron pipe with a composite coating and belongs to the technical field of metal corrosion prevention, comprising a nodular cast iron pipe base body, a composite outer coating coated on the outer surface of the nodular cast iron pipe base body and an inner coating closely attached to the inner surface of the nodular cast iron pipe base body, characterized in that the composite outer coating comprises an alkali-activated gel layer and a zinc-based coating, the zinc-based coating is arranged between the outer surface of the nodular cast iron pipe base body and the alkali-activated gel layer, the alkali-activated gel layer is an alkali-activated slag fly ash corrosion-resistant gel material, and the zinc-based coating is one or more of a pure zinc coating, a zinc-aluminum alloy coating or a zinc-rich coating layer. The alkali-activated gel layer provided by the application is coated on the inner or outer surface of the pipe and provides further corrosion protection for the nodular cast iron pipe, so that the pipe can be used in extremely harsh construction environments, and has extremely strong weather resistance in acidic soil and overhead fields.

The utility model relates to the technical field of nodular cast iron pipe butt joint, and discloses a nodular cast iron pipe sliding-in type connection roller skating pushing mechanism which comprises universal balls and threaded rods, the universal balls are used for being matched with an iron pipe to conduct sliding translation or being matched with the iron pipe to conduct rolling, and the universal balls are evenly distributed and installed on a top arc-shaped plate of an arc-shaped installation box. The two oppositely-opened arc-shaped cover plates at the bottom of the arc-shaped mounting box are connected through a lock catch; the bottom end of the threaded rod is in threaded butt joint with a support provided with an inner threaded groove, the top end of the threaded rod is inserted into a sleeve at the bottom of the rotating base, the sleeve rotates relative to the threaded rod to drive the rotating base and the arc-shaped mounting box to adjust the horizontal direction, and then the conveying direction of the iron pipe is adjusted. The threaded rod rotates relative to the support so that lifting of the threaded rod can be adjusted, the height of the rotating base and the height of the arc-shaped mounting box can be adjusted, and the conveying height of the iron pipe can be adjusted. The horizontal angle and height of the sliding-in type connecting roller skate can be adjusted, and the application range is wide.

The application belongs to the technical field of pipe mold cleaning, and discloses a cast iron pipe mold inner wall cleaning device, which comprises a tow wheel group, a pipe mold placed above the tow wheel group, a support rail arranged in the middle of the inner cavity of the pipe mold and along the axial direction of the pipe mold, a linear drive module slidably arranged on the support rail along the extension direction of the support rail, a movable wheel module arranged below the linear drive module, connected with the linear drive module through a fixing frame and in rolling contact with the inner wall of the pipe mold, a swing arm arranged below the linear drive module and hinged with the fixing frame, and a cleaning module hinged to the bottom of the swing arm. When the pipe mold rotates, the scraper can scrape off the dirt and other impurities passing through the scraper, and the dirt moves to the inner side of the dust accumulation channel along with the accumulation of the impurities. Then, the dust in the dust accumulation channel is sucked upward and collected through the cooperation of the suction holes and the suction device to generate negative pressure, so that the inner wall of the pipe mold is uniformly cleaned.

The utility model relates to a butt joint installation device for nodular cast iron pipes, one end of each nodular cast iron pipe is fixedly provided with a horn mouth, and the butt joint installation device comprises a fixing assembly which is of a closed annular structure, is installed on the nodular cast iron pipes in a buckled mode and is suitable for fixing the nodular cast iron pipes; the supporting assembly is located on one side of the horn mouth of the nodular cast iron pipe and suitable for bearing the adjacent nodular cast iron pipes for butt joint installation; the telescopic part is mounted between the fixing assembly and the supporting assembly and suitable for adjusting the distance between the fixing assembly and the supporting assembly. The butt-joint installation device comprises a fixing assembly, a supporting assembly and a telescopic piece, the fixing assembly sleeves one end of the nodular cast iron pipe and is suitable for fixing the nodular cast iron pipe, the supporting assembly is located at the other end of the nodular cast iron pipe, and the top end face of the supporting assembly is flush with the inner wall of the horn mouth and is suitable for bearing the adjacent nodular cast iron pipes for butt-joint installation. Alignment is fast, installation is convenient, and firmness and stability are achieved; and the device is suitable for nodular cast iron pipes of various sizes and wide in application range.

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

The application relates to the technical field of nodular column iron pipe processing, and discloses a self-anchored pipe socket welding ring welding device based on construction and an operation method thereof, which comprises a push plate, a self-anchored nodular cast iron pipe and a copper hoop, one end of the top of the push plate is fixedly connected with an electric telescopic table, the output end of the electric telescopic table is fixedly connected with a mounting frame, and the inner wall of the mounting frame is fixedly connected with a first motor. The welding gun arranged at the top of the assembling block reciprocatingly performs slow overlay welding between the two copper hoops under the slow rotation of the first motor, and the application further solves the problem that, in the use process of the traditional self-anchored pipe socket welding ring welding device, when special-sized pipelines are needed, the self-anchored nodular cast iron pipe often needs to be taken to a designated processing factory for processing, which is not only troublesome for the back-and-forth transportation, but also difficult to timely perform secondary processing on the pipe according to the construction demand, so that the pipeline throughness cannot be guaranteed.

The utility model relates to the technical field of lifting appliances, in particular to a lifting appliance for a nodular cast iron pipe, which comprises a lifting appliance rod, a mounting block b, a reinforcing component and a lifting component, a mounting block a is connected above the lifting appliance rod, two ends above the mounting block a are respectively connected with a splicing rod a, the splicing rod a is provided with a through hole a, the mounting block a and the inner walls of the two splicing rods a form a mounting cavity a, a connecting piece a is connected above the mounting cavity a, and the connecting piece a is connected with a lifting hook a and is used for being connected with lifting machine equipment; the mounting block b is connected below the lifting appliance rod; the mounting block b is connected with a splicing rod b, and the splicing rod b and the splicing rod a are the same in structure. According to the lifting appliance for the nodular cast iron pipe, a proper connecting position can be conveniently selected according to a nodular cast iron pipe body lifting point, the rationality of a lifting mode is improved, the safety and stability of nodular cast iron pipe body lifting operation are improved, deformation or damage of the nodular cast iron pipe in the lifting process is avoided, and the lifting cost and risk of the lifting appliance for the nodular cast iron pipe are reduced.

The utility model provides an automatic ladle slag removal device for nodular cast iron pipe production, and relates to the technical field of nodular cast iron pipe production, the automatic ladle slag removal device comprises a hoisting assembly and a bearing feeding and discharging component, the bearing feeding and discharging component assembled by bolts is arranged on the inner side of the lower portion of the hoisting assembly, and a cleaning mechanism is arranged at the output end of the inner side of the hoisting assembly. The feeding and discharging bearing part comprises an annular sleeve seat, a hinged movable strip, a ladle cylinder, an output nozzle, a hinged base, a pull rod, a hydraulic telescopic arm and an electric hinged seat; the annular sleeve seat is arranged on the inner side of the lower part of the hoisting assembly; according to the cleaning device, the first matching plate at the output end of the first hydraulic cylinder is mainly utilized to move into a ladle cylinder, and dirt which is difficult to scrape can be scraped through rotation of the rotating motor, the rotating sleeve, the servo motor, the vertical cleaning knife and the transverse cleaning knife; and an electromagnetic suction plate on one side of the second anastomosis plate can adsorb the cleaned iron dirt, so that the cleaning efficiency of the equipment is improved.

The application provides an outer wall protection device for a socket metal pipe, the outer wall protection device is a ring segment with the same center as the socket metal pipe to be protected, a hollow cylinder is formed by more than two ring segments, the socket metal pipe is sleeved in the hollow cylinder, the outer diameter of the hollow cylinder is greater than or equal to the outer diameter of the pushing flange and smaller than the maximum diameter of the socket segment sleeved in the hollow cylinder; the outer wall protection device comprises a first ring segment and a third ring segment; the first ring segment is adjacent to the reinforcing support during installation, and the third ring segment is matched with the socket segment. The application eliminates the longest curing process in the production of nodular cast iron pipes, shortens the pouring link in the preparation process of the nodular cast iron pipes, forms the required structure of the outer wall and the socket metal pipe in stages, and thus improves the production efficiency of the metal pipe.

The utility model discloses an auxiliary device for butt joint of bell and spigot joints of nodular cast iron pipes, which relates to the technical field of cart handles and comprises fixing clamps, the fixing clamps are symmetrically arranged, chains are movably connected to the tops and the bottoms of the fixing clamps, and a group of symmetrical guide rails are fixedly connected to opposite sides of the fixing clamps. Sliding mechanisms are arranged on the opposite sides of the fixing clamps, bearing mechanisms are arranged at the tops of the sliding mechanisms, rotating rods are rotatably connected to the bottoms of the sliding blocks, driving mechanisms are fixedly connected to the tops of the bearing mechanisms and the sliding mechanisms, and check blocks are slidably connected to the corners of the bottoms of the sliding mechanisms. According to the utility model, the bearing mechanism, the adjusting rod and the inclined surface are in threaded transmission fit, manual rotation is converted into vertical fine adjustment of the lifting block, and low-friction rolling of the rolling ball is combined, so that the pipeline axis is quickly aligned with the original bell and spigot, and the problem of time consumption caused by repeated trial and adjustment of traditional manual heightening is solved.

The utility model discloses a corrosion-resistant spheroidal graphite cast iron pipe with high strength and high explosion-proof performance, which comprises a first pipeline, a second pipeline and a rubber sleeve, a flange is arranged on one side of the outer surface of the second pipeline, a chamfer is arranged on one side of the inner surface of the flange, and the rubber sleeve can be clamped on the inner side of the flange. And one side of the outer surface of the flange is in threaded connection with a bolt. According to the corrosion-resistant spheroidal graphite cast iron pipe with the high strength and the high explosion-proof performance, through the arrangement of the first pipeline, the second pipeline, the rubber sleeve, a flange and a bolt, when the corrosion-resistant spheroidal graphite cast iron pipe is used, a user needs to connect the spheroidal graphite cast iron pipe, the bolt is rotated to be loosened, the flange is opened towards the two sides, and the second pipeline penetrates through the flange and the interior of the rubber sleeve; one side of the second pipeline is in contact with one side of the first pipeline, a user rotates the bolt to enable the flanges on the two sides to contract, a chamfer is arranged inside, the rubber sleeve is extruded towards the middle, the rubber sleeve is attached to the outer wall of the second pipeline, and the rapid connection effect is achieved.

The utility model relates to the technical field of nodular cast iron pipe fittings, in particular to a sand cleaning device suitable for the surface of a nodular cast iron pipe fitting, which comprises a sand tank, a sand cleaning station arranged in the middle of the sand tank, preparation stations arranged on two sides of the sand cleaning station, and two groups of rotatable nodular cast iron pipe fitting rotating clamping tables, the two nodular cast iron pipe fitting rotating clamping tables can be horizontally moved as a whole and can be arranged at a sand cleaning station and one of the preparation stations correspondingly, and the upper portion of the sand cleaning station fixedly communicates with a sand cleaning box with inlets and outlets formed in the bottoms of the two sides; the nodular cast iron pipe fitting sand removing device is simple in structure, sand on the inner wall and the outer wall of a nodular cast iron pipe fitting can be conveniently and continuously removed, the sand removing energy consumption is reduced, the occupied area is reduced, the safety performance is further improved, and abrasion to the nodular cast iron pipe fitting is reduced.

The utility model provides a DN350-800 nodular cast iron pipe wall thickness multi-surface detection device, which comprises a tug device, one side of the tug device is provided with a thickness measuring device, the tug device comprises a rotating disc and a base, the rotating disc is rotatably connected with the base, the rotating disc controls a first motor to rotate through a controller, and meanwhile, the thickness measuring device is connected with the thickness measuring device. A weighing device and a pushing rod are arranged in the rotating disc, a cast pipe is lifted and weighed, the thickness measuring device comprises a fixed rod and a movable rod, and a first laser displacement sensor arranged on the fixed rod is matched with a second laser displacement sensor arranged on the movable rod to measure the thickness of the cast pipe. According to the utility model, the tug device is installed, the cast pipe is moved directionally and at a fixed point, the rotating disc enables the cast pipe to rotate at a specific angle, the function of annularly detecting the wall thickness of the cast pipe is met, the lifting device and the weighing device are installed to meet the weighing function, wall thickness detection data are compared, the pipe weight is matched, and the quality of the cast pipe is judged more accurately.

The utility model discloses a nodular cast iron pipe fitting elbow joint suitable for complex terrains, which comprises an elbow joint, a pipeline, locking rings and a connecting ring, two ends of the elbow joint are respectively connected with the pipeline through the locking rings, and the locking rings are fixed on the elbow joint through mounting sleeves and locking screws. The connecting ring is connected with the connecting rod in a hanging mode through the hanging groove and matched with the connecting sleeve on the pipeline in a clamped mode, and the connecting rod tensions the connecting ring and the locking ring through the adjusting sleeve and the nut so as to achieve rapid locking. The limiting groove is clamped with a clamping rib on the outer side of the connecting sleeve to limit rotation of the connecting ring, a check ring is arranged on the outer side of the connecting sleeve and used for limiting longitudinal sliding of the connecting ring, the two ends of the bent connector are in sealing fit with a sealing ring through clamping rings to improve the sealing performance, and a reinforced fiber layer is embedded in the sealing ring to enhance the pressure resistance. The bent connector is simple in structure and convenient to install, can achieve rapid locking and efficient sealing of the bent connector and a pipeline, meets the use requirements under the complex terrain environment, and solves the problems that a traditional pipe fitting is loose in connection and poor in sealing performance.

The invention discloses a spraying and centrifuging device and process for a cement mortar lining of a nodular cast iron pipe, and belongs to the field of spraying of a ball pipeline lining. The device comprises a material mixing mechanism, a material conveying mechanism, a spraying mechanism and a centrifuging mechanism; the spraying mechanism is driven by high-pressure air to rotate, and cement mortar is evenly sprayed to the inner wall of the nodular cast iron pipe. The centrifugal mechanism is used for driving the nodular cast iron pipe to rotate and applying a vibration effect; the cement mortar comprises the following components in parts by mass: 100 parts of cement, 30-44 parts of water and 150-200 parts of sand; the nodular cast iron pipe keeps rotating at a low speed, mortar raw materials are evenly mixed through the mixing mechanism and conveyed to the spraying mechanism through the conveying mechanism to be sprayed out, the conveying mechanism moves at a constant speed, mortar is evenly sprayed to the inner wall of the pipeline, and the pipeline rotates at a high speed to further improve lining compactness and surface flatness. The thickness uniformity of the cement mortar lining is effectively improved, the high-speed centrifugation time is shortened, and the lining layering problem is solved.

The invention discloses a nodular cast iron pipe cement lining automatic adjusting system, and belongs to the field of nodular cast iron pipe manufacturing, the nodular cast iron pipe cement lining automatic adjusting system comprises a supporting mechanism and a PLC control cabinet installed on the surface of the supporting mechanism, an adjusting mechanism is installed on the surface of the supporting mechanism, and a feeding mechanism is installed on the surface of the adjusting mechanism; the adjusting mechanism comprises nodular cast iron pipe bodies rotationally connected to the surface of the supporting mechanism in a path array mode, and a feeding pipe is inserted into one nodular cast iron pipe body. Through cooperative use of the devices, the cement flow is monitored in real time based on the industrial high-definition AI recognition camera, the cement output and the rotating speed of the moving wheels are controlled through the PLC control cabinet, and the moving speed of the storage box is adjusted, so that the cement output is matched with the moving speed of the storage box; the amount of cement flowing to the inner wall of the nodular cast iron pipe body from each position of the feeding pipe is more uniform, and meanwhile the real-time scene of the interior of the nodular cast iron pipe body is displayed on a client side.

The utility model discloses hoisting equipment for nodular cast iron pipe installation, which is characterized in that a hoisting component is arranged in the middle of a cross beam and comprises a fixed seat arranged in the middle of the cross beam and a suspension piece arranged on the fixed seat, and hoisting fixing components are arranged on the cross beam and positioned on two sides of the hoisting component; the hoisting fixing assembly comprises a first fixing piece and a second fixing piece which are oppositely arranged, the first fixing piece and the second fixing piece are jointly connected with a suspension driving piece, a first suspension rope is arranged on the suspension driving piece, a second suspension rope is arranged on the fixing base, and the top of the first suspension rope and the top of the second suspension rope are jointly connected with an annular hoisting piece. According to the hoisting equipment for mounting the nodular cast iron pipe, in the hoisting process, the nodular cast iron pipe is suspended by the suspension piece so as to bear the main weight, the first fixing piece and the second fixing piece are clamped on the pipe wall of the nodular cast iron pipe so as to play a role in assisting suspension, and the nodular cast iron pipe is prevented from inclining.

The utility model discloses a transfer device after nodular cast iron pipe painting, which comprises a V-shaped transmission chain plate and a nodular cast iron pipe, the V-shaped transmission chain plate is fixedly connected with a support column in a welding mode, and the support column can stably support the nodular cast iron pipe. The supporting columns are additionally arranged on the V-shaped conveying chain plates, and the excellent coating protection effect is achieved in the transfer process of the nodular cast iron pipes. When the nodular cast iron pipe is stably placed on the transfer device, the pipe body of the nodular cast iron pipe only makes contact with the supporting columns and is completely isolated from other parts of the conveying chain plate, and the unique contact mode greatly reduces the contact area of the coating surface of the nodular cast iron pipe. Compared with the large-area fitting of the pipeline and the transmission surface in the traditional transfer mode, the device can protect the coating to the maximum extent.

The utility model discloses a nodular cast iron pipeline welding machine cable interface protection device which comprises a first connecting part and a second connecting part, the first connecting part and the second connecting part are fixedly connected, the first connecting part is detachably connected to a welding machine cable interface, and the second connecting part is detachably connected to a cable quick plug. The cable quick plug protection device is compact in structure and convenient to install, firmly protects the cable quick plug from loosening when an operator pulls a cable by using a welding machine in daily life, ensures that the welding machine can normally work for a long time, and protects the personal safety of the operator of the welding machine.

The utility model provides a riding wheel mechanism for nodular cast iron pipe production, and relates to the technical field of nodular cast iron pipe production, the riding wheel mechanism comprises a movable pressure reduction assembly and a transfer output component, the top end of the movable pressure reduction assembly is provided with a steering mechanism in bolted connection, and the top end of the steering mechanism is provided with an expansion and contraction displacement mechanism in bolted connection. A transfer output part in bolted connection is arranged on the side of the upper portion of the expansion and contraction displacement mechanism, a nodular cast iron pipe body in rolling fit is arranged at the output end of the transfer output part, and the transfer output part comprises a side bracket, a lifting frame, an annular shell, a pneumatic telescopic rod, a wheel sleeve shell and an electric guide wheel. According to the utility model, the pneumatic telescopic rods which are annularly distributed in a ring-shell shape at equal angles are used for outputting power to operate, then the wheel sleeve shells and the electric guide wheels are attached to the nodular cast iron pipe body, and the nodular cast iron pipe body is output to a target place after rolling operation and output, so that the final consignment effect is completed.

The utility model discloses a lifting appliance for nodular cast iron pipes, which comprises a nodular cast iron pipe body, positioning structures and an assembling component, and relates to the technical field of lifting tools, the positioning structures are arranged at the two ends of the nodular cast iron pipe body and comprise two end part limiting components and internal supporting components arranged on the opposite surfaces of the two end part limiting components; and the hoisting assembly is arranged on the opposite faces of the two end limiting assemblies, the assembling assembly is arranged between the two positioning assemblies and used for assembling the two positioning structures into a whole, and the assembling assembly comprises two assembling frames, a winding roller rotationally connected to the inner bottom walls of the assembling frames and a first steel rope wound around the surface of the winding roller. The supporting assembly adopts the sliding connection design of a gear rod and a telescopic frame and is matched with a fixing bolt and a multi-gear fixing groove, nodular cast iron pipes with different calibers can be compatible, a worm gear and a worm of the assembling assembly drive a first steel rope to be wound and unwound, the length compensation capacity is provided, and therefore the hoisting requirements of the nodular cast iron pipes with different lengths can be met.

The utility model discloses a flexible interface structure of a nodular cast iron pipe fitting, which is used for connecting a first pipe fitting and a second pipe fitting and comprises an outer pipe, a telescopic interlayer pipe and an inner pipe, the telescopic interlayer pipe is coaxially and fixedly attached to the outer peripheral surface of the inner pipe, and the outer pipe is coaxially and fixedly attached to the outer peripheral surface of the telescopic interlayer pipe; the two ends of the outer pipe and the inner pipe are longer than the telescopic interlayer pipe, so that socket ring grooves are formed in the two ends of the flexible connector structure. The end faces, inserted into the socket ring groove, of the first pipe fitting and the second pipe fitting abut against the telescopic interlayer pipe in an attached mode and are attached to the inner wall of the socket ring groove. A plurality of telescopic allowance holes are formed in the middle of the telescopic interlayer pipe; connecting discs are integrally formed at two ends of the outer pipe; the first pipe fitting and the second pipe fitting are connected with a pressing flange, and the pressing flange is fixedly connected with the connecting disc through a connecting bolt. Good flexibility and flexibility during flexible connection of the pipe fitting are guaranteed, sealing reliability and stability are effectively improved, and leakage is not prone to occurring.

The utility model relates to the technical field of cast pipe lining coating, and discloses a plug for cast pipe lining coating. The plug comprises a framework body, a first inflation rubber ring and a second inflation rubber ring, the framework body comprises an end plate and an annular plate arranged on one side of the end plate, a first annular groove is formed in the inner wall of the annular plate, a second annular groove is formed in the side, close to the annular plate, of the end plate, the first inflation rubber ring is embedded in the first annular groove, and the second inflation rubber ring is embedded in the second annular groove. The second inflation rubber ring is embedded in the second annular groove and used for being inflated to expand so as to be matched and pressed with the outer wall of the cast pipe, the second inflation rubber ring is embedded in the second annular groove, and the second inflation rubber ring is used for being inflated to expand so as to be attached to the inner wall of the cast pipe and form a lining chamfer; according to the plug, the subsequent chamfering procedure of the lining at the socket end of the nodular cast iron pipe can be omitted, the production process is accelerated, and the machining cost is saved.

The application discloses a sealing structure of nodular cast iron pipes and relates to the technical field of pipeline connection. The sealing structure comprises a sealing assembly arranged between two nodular cast iron pipes and a connecting assembly for connecting the two nodular cast iron pipes. The sealing assembly comprises a first elastic pad arranged in the interior of the nodular cast iron pipe, and a hollow support is fixedly connected to the interior of the first elastic pad. The gap between the first elastic pad and the hollow support is filled with a first solidifying agent. An annular gasket is arranged between the two nodular cast iron pipes, and the outer wall of the annular gasket is provided with an annular piece. The connecting assembly comprises a second fixing piece fixedly installed on the outer wall of the nodular cast iron pipe, and the inner wall of the second fixing piece is fixedly connected with a second extruding piece. The sealing structure of the nodular cast iron pipe can realize reliable sealing effect and ensure installation efficiency.

The utility model discloses a nodular cast iron pipeline molten iron trolley protection device which comprises a ladle, a molten iron trolley and a track, the ladle is placed on the molten iron trolley, the molten iron trolley is provided with trolley wheels, and the molten iron trolley is driven by the trolley wheels to run along the track. A gear motor is installed on the small wheel, a motor cable is arranged on the gear motor, and a power source is provided through the motor cable on the gear motor so as to drive the small wheel to operate. A cable drum is installed below the front end of the molten iron trolley and used for tightening incoming cables on the two sides of the trolley and providing connection transfer for motor cables. And a smooth water dripping plate is arranged above one side close to the cable drum. The hot metal trolley is simple in structure, convenient to manufacture and stable in structure, can provide great protection for the cable drum, avoids accidents caused by the fact that cables on the cable drum are scalded, improves operation stability of the hot metal trolley, reduces equipment faults, and provides powerful guarantee for production operation.

The invention relates to the technical field of machine vision and industrial defect detection, in particular to a nodular cast iron pipe defect detection method based on machine vision, which comprises the following steps: acquiring target image data of the surface of a nodular cast iron pipe to be detected through image acquisition equipment arranged on a nodular cast iron pipe transmission assembly line; generating a texture feature vector and a defect feature vector; calculating a feature mutual information amount between the texture feature vector and the defect feature vector; if the feature mutual information amount is smaller than a mutual information threshold value, a defect detection result is generated, and the mutual information threshold value is a threshold value determined based on training sample or verification sample statistics; if the characteristic mutual information amount is larger than or equal to the mutual information threshold value, the network parameters are adjusted, the step of generating the characteristic tensor is executed again until the characteristic mutual information amount is smaller than the mutual information threshold value or the preset maximum number of iterations is achieved, and the maximum number of iterations is the iteration upper limit preset in the model training stage; according to the method, feature collapse or misjudgment during deep feature fusion is avoided.

The utility model relates to the technical field of nodular cast iron pipe pouring, in particular to a nodular cast iron pipe pouring device, a hydraulic angle adjusting assembly comprises a supporting frame, one side of the supporting frame is fixedly connected with an inner shaft rotating supporting plate, one side of the inner shaft rotating supporting plate is fixedly connected with a rotating support, and the other side of the inner shaft rotating supporting plate is fixedly connected with the rotating support. By means of the blanking angle adjusting mechanism and the air-cooling type cooling mechanism, the supporting angle of the device can be adjusted during blanking of liquid base materials, and the device is convenient to use, high in practicability and high in practicability. The blanking angle adjusting mechanism and the air-cooling type cooling mechanism are used for adjusting the supporting angle of the device during blanking of the liquid base materials. The liquid base material is guided to be discharged and uniformly spread, the situation that the thickness of the nodular cast iron pipe is not uniform during centrifugal forming is avoided through the discharging effect, meanwhile, highly-flowing air is blown to cooling fins, rapid cooling work is conducted on nodular cast iron pipe forming, the forming time is shortened, and the production efficiency is improved.

The utility model discloses a quick cooling device for cast iron pipe fitting processing, which comprises a placing plate and a supporting seat, the bottom of the placing plate is connected with the supporting seat, the bottom of the placing plate is connected with a vertical plate, the side surface of the vertical plate is provided with an air cylinder body, the top of the air cylinder body is provided with a blowing nozzle pipe, and the side surface of the placing plate is provided with a shell. A filter screen is arranged at the front end of the shell, and the interior of the shell is connected with connecting plates which are annularly distributed. According to the rapid cooling device for cast iron pipe fitting machining, the air cylinder body and the blowing nozzle pipe are installed at the bottom of the containing plate, a worker firstly places a cast iron pipe fitting outside the blowing nozzle pipe in the containing plate, then the worker starts the air cylinder body and a driving motor, and the air cylinder body conducts heat dissipation on the interior of the cast iron pipe fitting; and meanwhile, an air blowing device outside the structure dissipates heat of the outside of the iron casting, and the heat dissipation efficiency can be improved during use through internal and external simultaneous heat dissipation.

The utility model discloses a nodular cast iron pipeline loadometer weighing platform protection device, which comprises a protection gasket, the protection gasket is of a rectangular frame type sheet structure, the protection gasket covers a mounting gap between a weighing platform surface and the ground, the protection gasket is provided with a connecting hole, and the connecting hole is communicated with the mounting gap. The connecting piece is fixedly connected with the ground through the connecting hole; the protective gasket is made of a hard rubber material; according to the utility model, the structure is reasonable, the installation and replacement of the protective gasket are fast, the practicability is strong, the wagon balance can be well protected from being invaded by sundries, the weighing reliability of the wagon balance is improved, and the service life of the wagon balance is effectively prolonged.

The utility model relates to the technical field of nodular cast iron pipes, in particular to a cushion layer structure of a nodular cast iron pipe. The nodular cast iron pipe further comprises pre-installation supports, the two sides of the lower portion of the nodular cast iron pipe body are fixedly connected with the two pre-installation supports, the pre-installation supports are fixedly connected with corrugated buffering pads for absorbing vibration, the corrugated buffering pads are connected to the nodular cast iron pipe body, and rubber sealing strips are fixedly connected to the lower portions of the pre-installation supports. A plurality of pre-embedded cross beams are arranged below the rubber sealing strip, the pre-embedded cross beams are fixedly connected to a pre-installation support, and a plurality of anchoring piles are fixedly connected to the lower portion of one side of the pre-installation support; the nodular cast iron pipe body is sealed and protected through the rubber sealing strips, vibration from the ground or under the ground is absorbed through the corrugated buffering cushion, the nodular cast iron pipe body is prevented from being impacted and moving, the nodular cast iron pipe body is protected, the service life of equipment is prolonged, and the service life of the equipment is prolonged. And subsequent maintenance personnel can conveniently and accurately maintain, and the maintenance cost is reduced.