1452 results about "Screw joint" patented technology

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 belongs to the technical field of make-up torque calculation, and discloses a casing direct connection screwed joint make-up torque prediction method, through an empirical formula formed by fitting of a structural mechanical model and test data, the casing direct connection screwed joint make-up torque can be calculated directly by measuring steel pipe basic structure parameters, repeated tests are not needed, and the prediction accuracy is high. And the working efficiency is greatly improved. The prediction process only depends on basic structure parameters capable of being rapidly measured and is not limited by working conditions. A fitting formula comes from verification of a large amount of test data and theoretical models, and precision and universality are both considered; and multi-parameter factor comprehensive modeling is adopted, errors caused by a single factor are effectively eliminated, the accuracy of a prediction result is high, and the stability and reliability of torque prediction are improved. By reasonably predicting the screwing-on torque, the connection strength of the steel pipe is effectively guaranteed, and underground potential safety hazards caused by improper screwing or excessive screwing are avoided, so that the integrity of a shaft structure and the safety of construction operation are guaranteed.

The invention relates to the technical field of mining machinery, and discloses a portable drilling device for ground source heat energy construction, comprising: a frame of a movable structure; the screwed joint is rotationally mounted on the frame, external threads are arranged on the outer side of the screwed joint, and slurry flows in the screwed joint; the rod dismounting barrel is integrally connected to the lower side of the threaded connector; the lifting groove is formed in the outer side of the rod unloading cylinder and is in an inverted L shape; external threads and internal threads are respectively arranged at two ends of the drill rods; the outer convex shell is connected to the outer ring side of the internal thread end of the drill rod; the through hole is formed in the side wall of the drill rod, so that the inner side of the drill rod is communicated with the interior of the outer convex shell; the upper end of the limiting plate is rotationally mounted at the upper part inside the through hole; the elastic piece is connected between the limiting plate and the inner side of the outer convex shell, so that the lower end of the limiting plate rotates into the drill rod; according to the invention, the integrally-connected rod dismounting cylinder is adopted, so that an independent rod dismounting device does not need to be mounted and dismounted, and the loss risk is avoided; and in cooperation with the drill rod with the elastic limiting plate, the rod dismounting action is accurate and stable, and the rod dismounting efficiency is improved.

The invention discloses an insulating joint and a working method thereof, the insulating joint comprises a main insulating head and an auxiliary insulating head which are in screwing butt joint, one end, close to the auxiliary insulating head, of the main insulating head is rotatably provided with an internal thread joint, and one end, close to the main insulating head, of the auxiliary insulating head is integrally provided with an external thread joint used for being in screwing fit with the internal thread joint; and an annular lip edge is integrally formed on the peripheral surface of the external thread joint. The fixing strength of the connector can be accurately adjusted according to the outer diameter of a cable, tight combination with the end of the cable is achieved, the mechanical connection strength between the connector and the cable is enhanced, it is guaranteed that the end of the cable is not prone to loosening or shifting in the long-term use process, and the service life of the cable is prolonged. And the multi-claw cable tightening assembly enables the friction force between the joint and the cable to be increased through uniformly distributed grasping force, so that the problem of loose connection possibly caused by vibration, stretching or external force is effectively avoided.

A piping system including a pipe and a pipe block coupled to an end of the pipe. The pipe includes: a flange positioned at the end and protruding in a radially outward direction along an outer circumference of the pipe; and a coupling portion having a nipple that is inserted into the pipe block. The pipe block includes: an insertion hole into which the pipe is coupled; and a lip protruding from a surface in which the insertion hole is formed in a circumferential direction along an outer circumference of the insertion hole. An inner diameter of the lip is equal to or greater than an outer diameter of the flange, and when the pipe is coupled to the pipe block, the flange is positioned inside the lip and the lip is deformed in a radially inward direction of the pipe to grip and fix the pipe.

The utility model relates to the technical field of air pipes, in particular to a novel stainless steel air pipe which comprises an air pipe body, a notch is formed in the bottom of the air pipe body, an assembling frame is inserted into the notch, a screw is fixed to the top end of the assembling frame and penetrates through a top plate of the air pipe body, and a nut is in threaded connection with the top end of the screw in a sleeved mode. A filter screen frame is installed in the assembling frame, and a filter screen plate is fixed to an inner ring opening of the filter screen frame. The novel stainless steel air pipe has the advantages that the assembling frame is connected with the air pipe body through the screws and the nuts, and rapid disassembly and assembly can be achieved without complex installation tools. Therefore, not only is the installation efficiency improved, but also the maintenance cost is reduced. Due to the fact that the splicing frame can be rapidly disassembled and assembled, when the filter screen needs to be cleaned or replaced, only the splicing frame needs to be pulled out of the air pipe body, and the whole air pipe system does not need to be disassembled.

The utility model discloses a torque detection device for a trapezoid lead screw, which comprises a workbench, a torque measuring head and lead screw fixing assemblies, the torque measuring head is movably connected with the workbench, and the lead screw fixing assemblies are movably arranged at the two ends of the workbench and are matched with the ends of the lead screw; relates to the technical field of lead screw torque detection. The fixed screw cylinder is fixedly connected with the mounting frame, the control screw cylinder is in threaded connection with the fixed screw cylinder, one end of the fixed seat is fixedly provided with the threaded chuck, one end of the control screw cylinder is fixedly connected with the control ring, the control ring is movably connected with the threaded chuck, and the control screw cylinder is in threaded connection with the threaded chuck. Therefore, after the end head of the trapezoidal lead screw is inserted into the threaded clamping head, the control screw barrel can be rotated and is in threaded connection with the threaded clamping head, so that the opening size of the threaded clamping head is controlled, the threaded clamping head is matched with the size of the end head of the lead screw, the end head of the lead screw is clamped, and the clamping effect is good.

The utility model relates to an RTP pipe joint sealing structure for high-pressure gas gathering and transportation. The RTP pipe joint sealing structure comprises a joint core pipe, a sleeve and a pipe body. One end of the joint core pipe is provided with a sealed end, and the other end of the joint core pipe is connected by being embedded in the pipe body; external threads are arranged on the outer ring of the joint core tube; one end of the sleeve is provided with internal threads; the joint core pipe is in threaded connection with the internal thread through the external thread; the other end of the sleeve is nested outside the pipe body; an annular sealing groove is further formed in the outer wall of the connector core pipe. An O-shaped rubber sealing ring and a plastic check ring are mounted in the annular sealing groove; the cross section of the annular sealing groove is square or trapezoid, and the cross section of the plastic check ring is also arranged to be of a square or trapezoid or polygonal structure corresponding to the cross section of the annular sealing groove. According to the utility model, the assembly size is more accurately controlled, so that the assembly connection gap between the pipe and the joint is tighter, and the sealing effectiveness is fully ensured.

The invention discloses a single-walled carbon nanotube collecting device, which relates to the related technical field of carbon nanotube preparation, is used for collecting single-walled carbon nanotubes entering a deposition area of a tubular reactor, and comprises a collecting net arranged in the deposition area of the tubular reactor, the sealing flange close to the deposition area of the tubular reactor is connected with the end part of the tubular reactor in a screw joint manner, the collecting net is mounted on the sealing flange, a sealing ring is mounted at the axial end part of the sealing flange, and a first abutting surface is arranged in the tubular reactor; in the stroke that the sealing flange is inserted into the tubular reactor and rotates, the end of the sealing flange is matched with the first abutting face to extrude the sealing ring to generate elastic deformation, and the sealing ring subjected to elastic deformation is attached to the collecting net.

The invention belongs to the technical field of petroleum and natural gas industry, and discloses a gas seal thread sealing performance evaluation method and a thread optimization method and system.The evaluation method comprises the steps that structural parameters of a target connector are determined; determining the sealing contact effective length of the target joint and the initial interference magnitude of the sealing surface; obtaining a make-up torque model of the target joint; performing make-up torque parameter sensitivity analysis, and evaluating thread parameters by analyzing the influence of the magnitude of interference and the thread friction coefficient on the proportion of the total make-up torque and the shoulder surface acting torque; and performing finite element analysis on the target joint air-tight seal buckle, and evaluating the thread sealing performance under the corresponding working condition according to a finite element analysis result. Advanced theories of material mechanics, pipe column mechanics, finite element analysis and the like are integrated, various performance indexes of thread strength, thread sealing performance and the like of the threaded connector under different loading conditions can be comprehensively evaluated, and different parameter optimized thread structure stress values can be rapidly obtained.

The multipurpose positioning pin puller comprises a pin body connecting rod, one end of the pin body connecting rod is a connecting end, the connecting end is in threaded connection with a double-thread connector connected with a positioning pin, and the other end of the pin body connecting rod is provided with an end limiting device. The pin body connecting rod is sleeved with the end limiting device, the position of the end limiting device can be adjusted in the axial direction of the pin body connecting rod, the pin body connecting rod is further sleeved with a push block part, the push block part moves along the pin body connecting rod and generates pulling-out driving force on the positioning pin body, the guide positioning sleeve comprises a columnar sleeve part, one end of the sleeve part forms an operation platform face, and the other end of the sleeve part is connected with the pin body connecting rod. A through hole for the pin body connecting rod to penetrate through in a guiding mode is formed in the operation platform face, and a strong magnet is arranged at the bottom of the sleeve part. According to the multipurpose positioning pin puller for the mineral oil disc separator, different positioning pins with different internal threads in a rotary drum part can be pulled out by replacing one part, and multiple purposes are achieved through one object.

The invention discloses an external thread clamping sleeve joint, and particularly relates to the technical field of pipe joints, the external thread clamping sleeve joint comprises a butt joint nut, a first clamping sleeve, a second clamping sleeve and a hollow rubber ring, the hollow rubber ring is arranged in a limiting groove, and a cavity in the hollow rubber ring is filled with sealant; the first flow guide grooves are formed in the peripheral side wall of the second clamping sleeve in an array mode and used for guiding the sealant into a concave cavity generated when the connecting pipe is extruded after the second clamping sleeve deforms; in the screwing process of the external thread connector, the external thread connector can extrude and break the hollow rubber ring, so that a gap between the butt joint nut and the external thread connector is sealed through sealant firstly, and when the external thread connector is screwed till the lowest point of the chamfer of the second clamping sleeve crosses the lowest point of the first flow guide groove, the sealing effect is achieved. And finally, the sealant enters the concave cavity generated by extruding the connecting pipe after the deformation of the second clamping sleeve from the first flow guide groove, so that the sealing between the external thread joint and the connecting pipe is realized.

The utility model discloses a code spraying auxiliary assembly for an ink-jet printer, which belongs to the field of ink-jet printers and comprises a support provided with a conveying belt and a mounting frame. The auxiliary assemblies are arranged, the fixing plates are installed on the support through the screw rods, the sliding blocks and the nuts, the whole auxiliary assemblies can be adjusted along the support according to the actual situation, the guiding plates are installed on the fixing bases through the connecting rods, the distance between the two guiding plates can be changed in cooperation with the elastic abutting structures for use, and therefore the distance between the two guiding plates can be changed. The auxiliary guiding device is suitable for auxiliary guiding work of objects of different models, the use flexibility and adaptability are improved, a hand lifting rod, a pressing plate, an abutting spring and other structures are arranged in the elastic abutting structure, when the position of the guiding plate is adjusted, only a movable rod and the pressing plate need to be lifted for receding, after adjustment is completed, a connecting rod can be rapidly fixed through the abutting spring, and the guiding plate is convenient to use. The adjusting process is extremely simple and convenient, and the pressing plate is installed at the lower end of the movable rod through the threaded connector and can be detached conveniently to replace the abutting spring.

The utility model relates to the technical field of flexible rubber hoses, in particular to a foaming flexible rubber hose. According to the technical scheme, the sealing assembly comprises a first threaded connector, a rubber hose, a buckle ring and an attaching block, the rubber hose is fixedly installed at the position, close to the end, of the inner wall of the first threaded connector, and the buckle ring is fixedly installed at the position, close to the end, of the outer arc face of the rubber hose; the inner wall of the second threaded connector is slidably connected with two attaching blocks which are symmetrically arranged, and the side portions of the buckle rings make contact with the attaching blocks. A first threaded connector is fixedly installed at the end of the main foaming hose, and the outer wall of the first threaded connector is in threaded connection with a second threaded connector. When air flows, the air applies pressure to the inner arc surface of the rubber hose to enable the rubber hose to be attached to the inner arc surface of the attaching block, and the clamping ring and the attaching block clamp the extending rubber sheet, so that the air is prevented from flowing to the joint of the first threaded joint and the second threaded joint, and the sealing effect is improved.

The utility model relates to the technical field of wood-working mechanical edge sealing equipment industry, and particularly discloses an edge sealing band floating type cutting mechanism which comprises an air cylinder bottom plate, an air cylinder is fixedly connected to the outer side of the air cylinder bottom plate, a cutter clamping sleeve is fixedly connected to the output end of the air cylinder, and a blade fixing plate is fixedly connected to the interior of the cutter clamping sleeve. The top of the air cylinder bottom plate is fixedly connected with an upper cutter guide groove, the bottom of the air cylinder bottom plate is fixedly connected with a lower cutter guide groove, the top of the air cylinder is fixedly connected with an exhaust valve, one end of the top of the exhaust valve is fixedly connected with a silencer, and the other end of the exhaust valve is in threaded connection with an L-shaped block insertion type threaded connector. The end, away from the cutter clamping sleeve, of the air cylinder is fixedly connected with a proximity sensor, the outer side of a bottom plate of the air cylinder is fixedly connected with a cutter groove, the swing assembly and the rotating shaft are arranged to control the whole cutting mechanism to swing, and meanwhile, the adjustable spring is reset through pressure, so that the cutter track material and the machining technology are optimized, and the cutting effect of a cutter edge is optimized.

A high-position gas detector calibration device belongs to the technical field of high-position gas detector calibration equipment and comprises a calibration cover, a connecting rod, a plurality of extension rods and an outer joint, the calibration cover is detachably mounted at the top of the connecting rod, and external threads are arranged on the outer surface of the lower end of the connecting rod and the outer surfaces of the lower ends of the extension rods. Nuts are fixedly installed at the top ends of the connecting rods, the connecting rods are connected with the extension rods through screw joint matching of the external threads and the nuts, the extension rods are connected together through matching of the external threads and the nuts, air bins are arranged in inner cavities of the connecting rods, and the air bins are communicated with an inner cavity of the calibration cover. According to the utility model, the calibration cover can be buckled at the position of the gas detector on the ground, the calibration is carried out by utilizing the inner pipes to convey the calibration gas, the existing mode of calibrating the high-position gas detector by climbing can be replaced, and the operation is safer and more reliable.

The utility model belongs to the technical field of 3D printing, and discloses a 3D printing scraper demolding supporting frame which comprises a printer shell, first sliding rails are fixedly arranged on the two sides of the interior of the printer shell, first sliding blocks are arranged on the top faces of the first sliding rails in a sliding mode, and a supporting frame body is fixedly arranged on the top faces of the first sliding blocks. A fixing frame is fixedly arranged on the inner side of the supporting frame body, a first motor is fixedly arranged on the outer side of the supporting frame body, a threaded shaft is fixedly arranged at the tail end of a main shaft of the first motor, and a sliding block is in threaded connection with the outer side of the threaded shaft. And the problem that the efficiency is low during manual demolding is solved, so that the working efficiency is improved, and the manpower consumption is reduced.

Disclosed is a socket unit comprising a first body portion comprising a first rear end portion for connection to the output shaft of a power tool and a front end portion adapted for engagement with a screw joint and a second body portion comprising a second rear end portion for connection to the output shaft of the direct driven power tool or a second front end portion adapted for engagement with a screw joint. The second body portion is at least partly arranged in the first body portion, and a relative rotation between the first and second body portions is allowed, such that one of the first and second body portions may rotate over a predetermined allowable angular range when the other is in engagement with the screw joint. The present specification also relates to a corresponding method, power tool and computer readable storage medium.

The utility model relates to the technical field of hoister coupling wheels, in particular to a safety mechanism and a hoister coupling wheel, which comprises a nylon rod, and a supporting rod is inserted into the inner wall of the nylon rod; a telescopic block is inserted into the surface of the screw joint rod, a connecting rod is fixed to the surface of the telescopic block, a jacking ring is fixed to the end of the connecting rod, and a nut is screwed to the surface of the supporting rod; the extension plate is arranged on the surface of the supporting rod; the device has the beneficial effects that the supporting rod is inserted into the nylon rod, the two ends of the supporting rod are fixed through the insulating pad and the nut, the supporting rod is fixed into the nylon rod, the jacking ring is jacked on the surface of the nut, the nut drives the jacking ring to rotate in the rotating process, the jacking ring is connected with the telescopic block through the connecting rod, and the telescopic block rotates along with the jacking ring; the telescopic block drives the screw joint rod to rotate, the end of the screw joint rod is in screw joint with the interior of the supporting rod, after the screw joint rod rotates, the screw joint rod moves in the supporting rod, and the pushing ring moves along with the screw joint rod.

The invention relates to the technical field of threaded connection of oil casings, in particular to a basically flush type coupling-free air-tight seal oil casing joint assembly which comprises an external thread joint and an internal thread joint, and after the external thread joint and the internal thread joint are screwed together, the external thread joint and the internal thread joint are screwed together. An outer metal sealing structure, an outer elastic sealing structure, meshing threads, an inner elastic sealing structure, an inner metal sealing structure, a torque shoulder and the like are sequentially formed. Through the cooperation of the external thread connector, the internal thread connector, the external metal sealing structure, the external elastic sealing structure, the meshing thread and the internal metal sealing structure, the connecting and sealing functions are provided, the connector is basically flush with the pipe body, the oil casing can enter a well easily, the well cementation gap is large, and the connector connecting efficiency can reach 65%-70%; and 2) the inner and outer seals are both metal / metal seal and elastic seal, and the double-seal structure greatly improves the sealing effect, and is suitable for ultra-deep wells and high-pressure natural gas wells with harsh conditions.

The present application belongs to the field of oil drilling technology, and discloses a PDC drill bit for rock breaking by pressure pulse impact oscillation. The specific technical scheme is as follows: the PDC drill bit for rock breaking by pressure pulse impact oscillation is composed of an upper threaded joint, a shell, a jet pulse block and a drill bit. The jet pulse block is composed of a fluid inlet, a left feedback channel outlet, a right feedback channel outlet, a left fluid channel, a right fluid channel, a left backflow feedback inlet, a left backflow annular fluid channel, a right backflow feedback inlet, a right backflow annular fluid channel, a fluid outlet and a fluid outlet cavity. After the drilling fluid passes through the upper threaded joint, it enters the jet pulse block from the fluid inlet, and then passes through the fluid outlet and flows out from the drill bit water eye. When the drilling fluid passes through the jet pulse block, the flow direction of the drilling fluid will change periodically due to the action of the feedback channel, and a pressure pulse will be generated, forming impact oscillation, and thus accelerating the rock breaking and drilling of the drill bit. The present application has the function of improving the rock breaking efficiency of the drill bit by relying on pressure pulse impact oscillation.

The utility model relates to the technical field of cloth production and processing, in particular to a cloth printing and collecting mechanism which comprises a cloth printing machine, cloth penetrates through the inner side of the cloth printing machine, and a drying mechanism is arranged at the bottom of the cloth printing machine. The drying mechanism comprises a concentric-square-shaped frame and a hot air pump, guide pipes are symmetrically installed on the two sides of the side edge of the concentric-square-shaped frame and penetrate through the inner side of the concentric-square-shaped frame, a heat supply pipe is connected to the output end of the hot air pump, a screw joint is fixedly installed at the end of the heat supply pipe, the left guide pipe is in screw joint with the screw joint, and a sealing cover is fixedly installed at the outer side end of the right guide pipe. A plurality of transverse rectangular pipes are connected between the air pipes on the two sides. By means of the drying mechanism, the effect of blowing hot air to cloth is generated in the concentric-square-shaped frame, drying of printed patterns on the cloth is accelerated, the situation that the printed patterns are scratched in the follow-up conveying and rolling process is avoided, the quality of cloth printing production is guaranteed, and practicability is improved.

The present disclosure provides a kind of for controlling surgical robot operating hand, comprising: first shell, wherein the top surface of first shell is provided with first through hole;Second shell, is installed in first shell;Ball nut, is installed at the bottom end of second shell;Lead screw, with ball nut screw joint, the bottom end of lead screw is rotatably installed in the bottom surface of first shell;Magnetic attraction type locking device, is installed on ball nut, magnetic attraction type locking device is configured to be embraced tightly with lead screw in the case where power is supplied, to prevent the rotation of lead screw;Ball type operating hand, rotatably installed on second shell by first through hole;Wherein, in the case where the angle of ball type operating hand changes, the working state of surgical robot is controlled.

The utility model relates to the technical field of buffer solution storage containers, in particular to a large-capacity sterile enzyme-free buffer solution storage barrel which comprises a barrel body, the barrel body is cylindrical, a bottle opening is fixed at the upper end of the barrel body, a sealing cover is sleeved at the outer end of the bottle opening through threads, and a bottle opening filter sieve is arranged in the bottle opening in a covering mode. A liquid taking assembly is arranged at the inner concave position of the lower side of the outer end of the barrel body and comprises a liquid outlet valve and a liquid taking opening fixedly connected with the barrel body, a threaded connection sleeve is fixed to the rear end of the liquid outlet valve, and the threaded connection sleeve is connected to the outer end of the liquid taking opening in a sleeving mode through threads. According to the utility model, the bottle opening filter sieve is arranged in the bottle opening, when the sealing cover is opened, the entering air can be filtered, the external pollution can be prevented, the environment in the barrel can be always kept in a sterile and enzyme-free state, and the arranged liquid taking assembly can discharge a buffer solution in the barrel body by opening the liquid outlet valve, so that the liquid taking is more convenient.

The utility model discloses a valve and a charging device. The valve comprises a driving part and a connecting part connected with the driving part. One end, far away from the connecting part, of the driving part is inwards concavely provided with a ventilation cavity extending into the connecting part. A ventilation groove communicating with the ventilation cavity is formed in the side wall of the connecting part, and a first screw joint part is arranged on the side wall of the connecting part. The valve can ensure the air exchange between the interior of the charging device and the exterior of the charging device, and ensures the sealing performance.

The utility model relates to a double-end bolt with an anti-drop structure, which comprises a double-end bolt main body, a nut is screwed outside the double-end bolt main body, anti-drop cylinders are assembled at two end parts of the double-end bolt main body, fastening screw rods are inserted in the anti-drop cylinders, fastening screw grooves are arranged at two end parts of the double-end bolt main body, and the double-end bolt main body is connected with the nut. Fixing blocks are installed at the two ends of the anti-falling barrel correspondingly, anti-falling rods are installed at the top ends of the fixing blocks, annular rotating grooves are formed in the bottom ends of the nuts, the top ends of the anti-falling rods are arranged in the annular rotating grooves, buffering cavities are formed in the bottom ends of the anti-falling rods, and limiting mechanisms are installed in the buffering cavities; the end of the limiting mechanism is connected with a fixing block, and anti-disengaging spiral teeth are arranged on the inner wall of the anti-disengaging rod and meshed with the outer threads of the stud body. The technical scheme of the utility model has the technical effects of good tooth withdrawal prevention function, high connection strength and extremely high connection stability.

The discharging and cooling integrated mechanism comprises a laser cutting head, an adjusting pipe is arranged on one side of the laser cutting head, a water inlet groove, a water storage groove, an adjusting groove and a water outlet groove are formed in the adjusting pipe, a fixing frame is arranged at the position of the water inlet groove, and the upper end face of the fixing frame is fixedly connected with a forward and reverse motor. The output end of the forward and reverse motor is connected with a rotating shaft, the end, away from the forward and reverse motor, of the rotating shaft is fixedly connected with a connecting column, and through use of the forward and reverse motor, the rotating shaft drives the connecting rod to rotate, so that the connecting rod drives the screw rod to rotate, and the screw rod is in threaded connection with the lifting block; when the laser cutting machine works, the lifting device drives the positioning block, the adjusting rod and the adjusting block to lift, so that the position of the adjusting block in the adjusting groove is changed, the water outlet amount of the adjusting pipe is flexibly adjusted, a workpiece subjected to laser cutting can be rapidly cooled, the water outlet amount is rapidly adjusted, and water sources are saved.

The utility model provides an auxiliary structure that inverter sheet metal is used, relates to sheet metal processing technical field, include: bottom plate, the left and right sides of bottom plate top all weld a block adjusting support board, the left and right sides of bottom plate top still weld two groups of four guide posts, four guide posts outside all install a spring, still slide and install a block lower pressure plate between the two groups of guide posts of bottom plate top, the left and right sides of the top of two block adjusting support boards are all through thread screw joint has a locating screw, the left and right sides of the front of side support board also weld two groups of four guide posts, the guide post outside slide and install a block side pressure plate of side support board front, the left and right sides of side support board front still rotate and install two screw rods. This structure can clamp and fix when welding sheet metal part, will not appear the condition of activity in the welding process, guarantees welding accuracy.

The utility model discloses a single-seat self-operated pressure regulating valve which comprises a valve seat structure, a sealing push rod, a middle-section connecting piece and a pneumatic structure, the surface of the valve seat structure is fixedly connected with the sealing push rod in a butt joint mode, the surface of the sealing push rod is fixedly connected with the middle-section connecting piece in a butt joint mode, and the surface of the middle-section connecting piece is fixedly connected with the pneumatic structure. According to the single-seat self-operated pressure regulating valve, the valve seat structure, the middle-section connecting piece and the pneumatic structure are arranged, so that the single-seat self-operated pressure regulating valve is roughly divided into three sections, the three sections are mutually extruded and butted and are connected in series through the long screw rod, the number of fixing structures of the single-seat self-operated pressure regulating valve is reduced, and the single-seat self-operated pressure regulating valve is reduced. The device is simple in structure and convenient to maintain and disassemble, by arranging a pneumatic structure and a sealing push rod, the operation path of the device is shortened, the response speed is increased, the device is more sensitive, the length of a push rod of an existing device is shortened, and a spring is placed in the pneumatic structure.