125results about How to "Easy clamping" patented technology

The external expansion positioning clamping device comprises a shell of a cuboid structure, a first round opening is formed in the outer wall of the top of the shell, a sleeve is fixedly connected to the outer wall of the top of the shell and is of a conical structure, and an auxiliary assembly is slidably installed on the outer wall of the top of the sleeve; and the same piston assembly is arranged on the inner walls of the auxiliary assembly, the sleeve and the shell. According to the positioning and clamping device, the two positioning claws are arranged in the auxiliary assembly, a workpiece is conveniently clamped when the positioning claws are unfolded, meanwhile, a protrusion is arranged at one end of each positioning claw, the workpiece is conveniently pressed, the situation that the workpiece jumps during machining is effectively avoided, and the problem that an existing positioning and clamping device cannot conveniently clamp the workpiece is solved.

This invention belongs to the field of aerospace structural component manufacturing technology, specifically relating to an arc-shaped cap and its integrated bending forming method and application. The integrated bending forming method includes the following steps: S1, blanking to obtain a cap plate blank or cap frame blank; S2, milling to machine the external dimensions and hole positions before bending, obtaining a flat, non-arc semi-finished product; S3, bending, placing the flat semi-finished product between the punch and die of a bending die, and applying pressure to press it into an arc-shaped part with a predetermined curvature; S4, stress-relieving treatment of the bent arc-shaped part to eliminate its internal residual stress; S5, shaping, bending and shaping again to stabilize its curvature shape, obtaining the final arc-shaped cap product. This invention effectively solves the problem of springback during sheet metal bending by introducing a combination of bending die design, graded pressure control, and stress-relieving and shaping processes, ensuring the accuracy of the final product's curvature and external dimensions.

This invention discloses a pipeline gas supply device, a pipeline gas filling method, and a pipeline welding method, relating to the field of welding tool technology. The pipeline gas supply device includes a gas supply pipe, which comprises a hollow gas supply pipe body and a sealing plate located at one end of the gas supply pipe body, with the other end of the gas supply pipe being the gas supply end; a sealing sleeve fitted around the outer circumference of the gas supply pipe; two fixing washers, located at opposite ends of the sealing sleeve; a pushing component located at the gas supply end of the gas supply pipe; and an expansion / contraction component. The pushing component moves towards the sealing plate end of the gas supply pipe, causing the expansion / contraction component to be squeezed by the fixing washers and the sealing plate or the pushing component, achieving a pipeline sealing effect. This device limits the gas filling range of the protective gas to between the two expansion / contraction washers, greatly reducing the amount of gas used for welding, preventing free discharge of the protective gas, enabling quantitative use of the protective gas, and reducing waste. It is applicable to the gas filling of welded bends, long pipes, and irregularly shaped pipelines.

The utility model relates to the technical field of seat angle adjuster machining, in particular to seat angle adjuster laser welding auxiliary clamping equipment which comprises an equipment table, a motor, a connecting ring, a dust hood, a screw rod, an exhaust pipe and a clamping mechanism, the motor is installed at the bottom of the equipment table, and the connecting ring is fixed to the upper surface of the equipment table; according to the auxiliary clamping equipment for laser welding of the seat angle adjustor, a core disc of the seat angle adjustor is effectively clamped, the core disc is controlled to rotate slowly in the welding process, the welding area is automatically adjusted, the welding efficiency is improved, and the welding quality is improved. Smoke dust generated by laser welding is effectively absorbed, the health problem caused by heavy metal smoke dust is reduced, in the clamping and welding process, the height of the clamping base can be adjusted, clamping is facilitated, meanwhile, the distance between the dust collection device and a welding area is effectively controlled, and therefore the dust collection effect is guaranteed.

The utility model discloses a loading opening end frame machining clamp which comprises a bottom plate, a clamping device and a clamping device. The guide template is fixedly arranged on the assembly plane and comprises three vertical planes and a first horizontal plane, the first vertical plane is parallel to the second vertical plane, the third vertical plane is perpendicular to the first vertical plane and the second vertical plane, and the first horizontal plane is perpendicular to the three vertical planes; the equal-height block is attached and fixed to the first vertical face, the equal-height block comprises a second horizontal face flush with the first horizontal face and a fourth vertical face parallel to the first vertical face, and the fourth vertical face upwards protrudes out of the second horizontal face; the positioning block is attached and fixed to the third vertical plane, the positioning block comprises a third horizontal plane flush with the first horizontal plane and a fifth vertical plane parallel to the third vertical plane, and the fifth vertical plane upwards protrudes out of the third horizontal plane; wherein the fourth vertical face is attached to one side edge of the end frame, and the fifth vertical face is attached to the other side edge of the end frame.

This utility model discloses a cable winding device for cable production, specifically relating to the field of cable production technology. It includes a winding base with a supporting side plate on one side of its upper end. A movable base is located on the outer side of the upper end of the winding base. Positioning components are located on both sides of the upper end of the movable base. First hydraulic telescopic rods are located on the outer sides of both ends of the winding base. A supporting push plate is located inside the winding base via the output shaft of the first hydraulic telescopic rod. In actual use, the corresponding arrangement of the first hydraulic telescopic rod, positioning components, supporting push plate, and movable base allows for easy alignment of both ends of the cable winding frame with the positioning components. An external control device drives the first hydraulic telescopic rod, which, through its output shaft, moves the supporting push plate to one side. As the supporting push plate moves, it pushes against the movable base, causing it to move upwards and lifting the cable winding frame at the upper end of the movable base, thus facilitating auxiliary installation of the cable winding frame.

The utility model belongs to the field of sand blasting devices, and particularly relates to a sand blasting device for metal target material processing, which comprises a box seat, a flow guide cover is fixedly mounted in the box seat, a collecting box is slidably connected in the box seat, a limiting mechanism is arranged at the bottom of the inner side of the box seat, and a supporting rod frame is fixedly connected to the bottom of the inner side of the flow guide cover. A connecting base is installed in the supporting rod frame through a damping shaft, a clamping plate is fixedly connected to the upper end of the connecting base, and a guide rod frame is fixedly connected to the lower end of the clamping plate. The limiting mechanism is additionally arranged in the box base, the universal wheels are additionally arranged on the collecting box, the guide strip is additionally arranged on the flow guide cover, the collecting box can be stably installed in the box base through the guide strip and the limiting frame, and then when the collecting box needs to be taken, only the limiting frame needs to be separated from the collecting box, and the collecting box can be conveniently taken. And then the collecting box can be moved through the universal wheels, so that the collecting box is more convenient to carry.

The utility model provides a tarpaulin welding supporting table which comprises a body, containing grooves are formed in the tops of the two ends of the body, and supporting frames are arranged on the two sides of the two ends of the body. The guide column is horizontally and rotationally arranged between the two opposite supporting frames, and the guide column is located in the containing groove; the driving column is located above one guide column, the driving column and the guide column form a clamping space, one end of the driving column is provided with a Z-shaped driving handle, and the driving handle is used for rotating the driving column. According to the supporting table for tarpaulin welding, the using function effect is better.

The utility model discloses an oscillation device for detection pretreatment of pesticide residues of traditional Chinese medicinal materials, and belongs to the technical field of food detection equipment. The oscillation device comprises a main machine and an oscillation disc arranged on the main machine, and further comprises a fixing assembly which comprises a fixing rod which can be in threaded connection with connecting holes corresponding to the two ends of the main machine and located on the outer side of the oscillation disc; mounting pieces which can be connected with the fixing rods are arranged at the two ends of the fixing frame; the fixing holes are transversely and longitudinally formed in the fixing frame at intervals; the fixing frame is positioned above the oscillation disc; the vertical projection of the fixing hole is located in the area range of the oscillation disc. The fixing rod can be installed in the connecting hole, the fixing frame is installed on the fixing rod through the installing piece, the fixing hole is used for containing a sample container, the sample container can be supported and limited in the oscillation processing process, the container is prevented from shaking and falling out of the pipe frame, and the situation that sample powder adheres to the inner wall of the container due to the fact that the oscillation amplitude is too large can be avoided; the extraction effect is influenced.

The utility model discloses butt joint equipment for round pipe welding, and relates to the technical field of welding equipment. Comprising a bottom plate, a rack is fixedly arranged in the middle of the bottom plate in the length direction of the bottom plate, five moving parts are movably arranged on the rack in an engaged mode, fixed rotating parts are symmetrically arranged on the upper portions of the moving parts arranged at the two ends of the rack, and a supporting part is fixedly arranged on the upper portion of the moving part arranged between the fixed rotating parts. The lifting welding part is arranged in the middle of one side of the bottom plate in the length direction, the supporting part can adjust the height of a butt-joint steel pipe, a chuck of the fixed rotating part can conveniently clamp and fix the tail end of the steel pipe, the fixed rotating part can be in butt joint with the front end of the steel pipe through opposite movement, and surrounding welding of the butt-joint position of the butt-joint steel pipe is achieved through rotation.

The utility model relates to the technical field of machining auxiliary equipment, in particular to a shaft part nitriding tool which comprises a nitriding furnace main body, a first air cylinder is arranged on one side of the nitriding furnace main body, a top cover is arranged above the nitriding furnace main body, and a fixing plate is fixedly installed on a side edge plate body of the top cover. The tail end of a telescopic shaft of the first air cylinder is detachably installed on the fixing plate, a driving motor is fixedly installed at the center of the top face of the top cover, a rectangular rod is installed at the tail end of an output shaft of the driving motor, a second air cylinder is arranged at the bottom of the nitriding furnace body, and a telescopic shaft of the second air cylinder penetrates into the nitriding furnace body and is detachably provided with a supporting base. And a convex column is rotationally connected to the center position of the supporting base, a mesh cylinder is installed at the top end of the convex column, a center column is fixedly installed at the center position of the mesh cylinder, a rectangular insertion hole is formed in the center column, and the rectangular rod is matched with the rectangular insertion hole in an inserted mode. The dynamic nitriding device is convenient for dynamic nitriding operation and is beneficial to improving nitriding quality.

The utility model discloses a kind of U-shaped cylindrical pin bending tool, belong to the technical field of machining, comprising: the bottom plate of being made with sliding slot and center through-hole, the base of being installed in bottom plate bottom and inside installation has spring, the shell fixed on bottom plate, the inner shell fixed in the left and right sides in shell interior, left and right platform block rotationally connected in two inner shell interiors, front and rear push block installed in shell front and rear side, recess die installed between left and right platform block, and male die with recess die die closing;The part to be formed is fixed in platform block top, adjust the interval of two inner shells and front and rear push block, male die presses down recess die, recess die promotes left and right platform block rotation and carries out bending, after bending, spring rebounds and pops out forming part.The utility model structure scientific and reasonable, use safe and convenient.

This invention discloses a forklift lever head component processing device, relating to the field of forklift lever head drilling technology; it includes a drilling mounting component, on which a clamping and positioning component is mounted to ensure drilling stability; a transfer auxiliary component is mounted on the drilling mounting component to reduce clamping difficulty; an inclined drilling guide component is mounted on the drilling mounting component; a wear compensation component is mounted on the inclined drilling guide component; the wear compensation component is used to limit the drill bit on the drilling mounting component; by adjusting the compensation slider, wear can be compensated, ensuring that wear can be compensated after long-term use, reducing operating costs; and with the trimming guide ring, trimming can be performed using the drill bit after wear and displacement adjustment of the compensation slider; thus solving the problem that the drill bit positioning block used in current forklift lever head drilling devices is not convenient for compensating wear and for verifying wear.

The utility model discloses an interventional robot slave end device adopting a convergence driving module, which comprises a linear track group, and a first port control module, the convergence driving module and a first clamping rotating mechanism are sequentially arranged on the linear track group through a plurality of module fixing seats respectively. The first port control modules, the convergence driving modules and the first clamping and rotating mechanisms are sequentially arranged in the length direction of the linear rail set from front to back, and the module fixing seats can drive the corresponding first port control modules or the convergence driving modules or the first clamping and rotating mechanisms to reciprocate during reciprocating motion to achieve delivery of intervention consumables. The convergence driving module converges at least two rear intervention consumables and then penetrates into the front intervention consumables at the same time. Convergence of the guide wires and / or the guide pipes is achieved through the convergence driving module, and therefore the multiple guide wires and the multiple guide pipes cooperatively move in place to enter a target object and work.

The utility model discloses a port polishing device for vacuum cavity processing, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a vertical plate, one side of the vertical plate is provided with a driving assembly, one side of the vertical plate far away from the driving assembly is provided with two clamping blocks, and the opposite sides of the two clamping blocks are provided with chutes. By arranging the annular pipe, the polisher, the dust collecting box, the fan and the like, the position of the polisher can be adjusted under the driving of the electric guide rail while the connecting plate rotates, so that ports at different positions of the vacuum cavity can be conveniently polished, the working efficiency is improved when the ports of the vacuum cavity are automatically polished, and the labor intensity of workers is reduced. And meanwhile, under the action of a dust removal cover and an annular pipe, dust generated in the grinding process can be adsorbed and collected under the action of a draught fan and a dust collection box, an operator is prevented from adsorbing the dust into the body, and the safety of body health is guaranteed.

The utility model discloses a cell culture bottle rack relates to cell culture device technical field. The cell culture bottle rack includes rack base, support platform, clamping unit, limit block, clamping block and locking unit, and support platform slidingly connects in the top of rack base. The cell culture bottle rack passes through the design of support platform, clamping unit and limit block, makes cell culture bottle convenient for clamping between two sets of limit blocks, keeps clamping stable, and cell culture effect is guaranteed, and simultaneously, through the design of limit block, clamping block and locking unit, makes limit block convenient for dismounting and replacement model, to adapt to multiple models cell culture bottle, ensures that the contact area between cell culture bottle and limit block is big during clamping process, and clamping effect is good, and safety is good, satisfies use demand.

This application belongs to the technical field of adhesive application devices for integrated thermal insulation and decorative panels, and discloses an automatic adhesive application device for integrated thermal insulation and decorative panels. The present invention includes a base, a first conveyor mounted on the base, and a second conveyor mounted on the base. Both the first and second conveyors are equipped with clamping mechanisms, each clamping mechanism including a clamping plate. An inclined plate is fixedly connected to one end of the clamping plate, and a clamping electric push rod is fixedly connected to one side surface of the clamping plate. A spraying mechanism is located above the first conveyor, and the spraying mechanism includes a guide rail box located above the first conveyor. In this application, by providing clamping mechanisms, the integrated thermal insulation and decorative panels can be clamped more conveniently, preventing movement or displacement during transportation and adhesive application, ensuring the accuracy of adhesive application. Furthermore, the rollers in the clamping mechanism reduce the frictional force in contact with the clamped integrated thermal insulation and decorative panels.

The utility model relates to a preservative film rewinding device. A second guide inclined plate is matched with a moving assembly to facilitate replacement of a rewinding drum, when the rewinding drum is replaced, a reciprocating lead screw controls a rewinding structure to move to a preset position, an electric push rod controls a moving plate to move in the direction of the second guide inclined plate, a second limiting inclined block pushes a connecting block, a Y-shaped supporting frame in the vertical state inclines, and the rewinding drum is replaced. After the rewinding drum slides into the clamping groove, an electric push rod controls a movable plate to be away from a second guide inclined plate, when a torsional spring is reset, a Y-shaped supporting frame is synchronously driven to be reset to be in a vertical state, the electric push rod drives the movable plate to move towards the rewinding structure, and then the rewinding drum is driven to move towards the rewinding structure; and through cooperation of the second guide inclined plate, the moving assembly and the rewinding structure, the rewinding barrel can be automatically replaced.

The application discloses a radial positioning structure for machining a big gear ring and a positioning method thereof, which comprises a base and a gear ring, the gear ring is coaxially arranged above the base, a driving assembly for supporting rotation of the gear ring is fixed to the top of the base, a positioning tooth block which extends into the inside of the gear ring and is engaged with the internal gear on the inner circumference of the gear ring is fixed to the top of the base, a movable assembly is arranged above the base, a supporting assembly for supporting the movable assembly and the positioning tooth block to move up and down is arranged on the inside of the base, and an auxiliary assembly is arranged between the supporting assembly and the movable assembly. The application has the beneficial effect that a plurality of press rollers for supporting rotation of the gear ring are arranged above the base, the positions of the plurality of press rollers can be synchronously adjusted by the locking motor in the middle, thereby the gear ring placed in the middle of the plurality of press rollers is automatically centered and locked and clamped, manual adjustment of the supporting position of the clamp is not needed, clamping is more convenient, the initial distance between the adjacent internal gears is kept consistent, and the quality of the gear ring is ensured.

The invention provides a curved-surface foam processing method. The curved-surface foam processing method comprises the following steps: S1, performing three-dimensional modeling on curved-surface foam and uniformly dividing the curved-surface foam into a plurality of small foam blocks; s2, the foam blank is clamped and fixed to a platform with a groove; s3, the foam blank is machined into small foam blocks through a three-axis machine tool; and S4, splicing and assembling the processed small foam blocks to obtain the complete curved-surface foam. The machining device has the effect of achieving high-profile-precision machining of large curved-surface foam.

The utility model discloses an injection molding part assembly technical field's a kind of injection molding part assembly robot's clamping mechanism, including the base of robot, the base top hinged mounting has mechanical arm, the one end of the mechanical arm hinged mounting has support frame, the support frame one side integrally has support plate, the support plate one side mounting has the clamping piece for fixed workpiece, the support plate bottom welding frame has fixed plate, the support plate of support frame one side can support and install fixed clamping piece, the fixed plate of support plate bottom can keep different distance between clamping piece and clamping piece, clamping piece can clamp and fix workpiece, using clamping piece can assist clamping piece to clamp and fix workpiece, prevent workpiece from deviating or shaking, also can avoid that workpiece length is longer and leads to workpiece clamping unstable.

The invention discloses a feeding device for child toy car accessory machining, and belongs to the technical field of toy car accessory machining. The feeding device for child toy car accessory machining comprises a mounting frame, the top and the bottom of the mounting frame are each provided with an opening a, and the two ends of the mounting frame are symmetrically and movably provided with pushing assemblies; the pushing assembly comprises sliding seats which are symmetrically and movably arranged at the two ends of the mounting frame, clamping assemblies are movably arranged on the sides, close to each other, of the two corresponding sliding seats, a moving assembly connected with the clamping assemblies is connected between the two sliding seats, and a rotating assembly connected with the moving assembly is connected between the two sliding seats; the two clamping assemblies conduct clamping and centering positioning treatment on the two ends and the corresponding side walls of the workpiece to be machined in the mode that the two clamping assemblies get close to each other, shaft accessories of different specifications of child toy cars can be clamped conveniently, and the problem that when the shaft accessories of the child toy cars of different specifications are machined, a whole set of jig needs to be replaced is solved.

The present application belongs to the field of processing tools of cam curve lens barrel, disclose a kind of cam curve zoom lens barrel high-precision milling clamps, including zoom lens barrel body, mandrel, centering ring, tool base, mandrel outer circle is designed with the angle guide groove four groups with bottom surface, for the filling of molten wax, the centering ring in the present application is placed in tool base, after being pressed, the change of inner hole and outer circle diameter, cooperate with mandrel outer circle and tool base;Through mandrel outer circle and tool base end face to zoom lens barrel body positioning, guarantee the rigidity and machining precision when zoom lens barrel body processing;Through the design of pin hole on zoom lens barrel body, ensure the starting position determination of cam curve milling when sub-clamping.This application simple structure, compact, operability is strong;Solved the low rigidity problem when zoom lens barrel cam curve milling.

This invention proposes a measuring tool and method for measuring the axial clearance of spherical pistons in a hydraulic plunger pump. The tool includes a base plate, a rotating assembly, an indexing and positioning assembly, a positioning assembly, a measuring mechanism, and a quick-clamping mechanism. The rotating assembly accurately positions multiple spherical piston rods on the shaft-piston assembly in the circumferential direction. The quick-clamping mechanism then fixes the shaft-piston assembly axially, ensuring that the multiple spherical piston rods are in the same measurement state. The indexing and positioning assembly measures the axial clearance of each spherical piston rod individually, resulting in high detection efficiency and accurate measurement data.

The invention discloses an oil-free and gas-free pipe clamp capable of being pulled tighter by axial tension, and particularly relates to the technical field of pipe clamping. The oil-free and gas-free pipe clamp comprises a clamp bottom plate and a clamp shell, one side of the clamp bottom plate is connected with the clamp shell through a bolt, and the other end of the clamp shell is connected with a rotary sleeve; a rotary sleeve is connected to the outer side of the clamp shell in a threaded sleeving mode, a clamp taper sleeve core is slidably connected into the clamp shell, a plurality of steel balls are connected to one end of the clamp taper sleeve core, a core rod is arranged at the center axis position of the clamp bottom plate, the center axis position of the clamp shell and the center axis position of the clamp front cover in a penetrating mode, and a pressure spring is arranged on the outer side of the core rod in a sleeving mode; when oil-free and gas-free batch use is carried out through the mechanism, a large amount of space can be saved, and the mechanism is stable, firm and convenient to clamp and disassemble by means of the structure of a machine. When the clamping force is large, only the rotating sleeve needs to be rotated, the rotating sleeve drives the movable screw to lift, and the steel ball loosens the pipe, so that the dismounting is very convenient, and the practicability of the device is improved.

The utility model discloses an extended ejection transfer device for an injection mold, which belongs to the field of molds and comprises a supporting mechanism, the supporting mechanism comprises a fitting bottom plate supported on the ground, rubber pads are vertically mounted at four corners of the plate surface of the fitting bottom plate, and a surrounding frame is vertically arranged in the middle of the top end of the fitting bottom plate in a surrounding manner. Connecting vertical rods are vertically arranged at the four corners of the top of the surrounding frame, outer frames are arranged in the middles of rod bodies of the connecting vertical rods in a surrounding mode, and after the outer frames and lifting supporting of the plate face of the upper top plate are adopted and supporting of a buffering support is adopted, it is ensured that a worm and gear steering gear is driven to rotate after an upper driving motor is installed and powered on; and after the transmission roller shaft rotates in the axial direction, the disc surface of the rotating disc is controlled to overturn upwards.

The invention discloses a method for constructing an enclosure structure by adopting a hole pile method under a limited ground condition, which comprises the following steps of: constructing ground enclosure piles on the ground, arranging the ground enclosure piles along a first open excavation section and a second open excavation section, then constructing the first open excavation section and the second open excavation section, then constructing a pipe curtain support beam below a running track, and then constructing a pipe curtain, excavation is conducted from the first open excavation section and the second open excavation section to the direction, so that an underground excavation section is excavated, in-hole fender posts are constructed along the edge of the underground excavation section, in-hole piles are constructed at multiple positions of the ground of the underground excavation section, and steel pipe stand column piles are installed on the in-hole piles; and finally, a pile top beam is constructed on the steel pipe stand column pile, and a cover plate is installed on the pile top beam. According to the construction method, the ground fender posts are constructed firstly, then the in-hole fender posts are constructed when the underground excavation section is constructed, and the in-hole fender posts are connected with the ground fender posts to form a closed fender post structure, so that the safety of subsequent construction is guaranteed, the stability of a soil layer around the subway station is guaranteed, and meanwhile, the construction efficiency is guaranteed.

The utility model relates to a kind of grinding and polishing device for copper bar heat sink plate processing, the utility model effectively solves the problem that the existing copper bar heat sink plate processing mode is easy to cause uneven polishing and affect processing efficiency.The grinding and polishing device for copper bar heat sink plate processing can adjust the spacing of both sides clamping plate through adjusting mechanism, so as to facilitate clamping copper bar heat sink plate of different width, and electric lifting rod can adjust the height of top polishing mechanism, which is convenient for polishing and polishing copper bar heat sink plate of different thickness, top polishing mechanism and bottom polishing mechanism can polish and polish the front and back of copper bar heat sink plate simultaneously, and can polish uniformly on the whole surface, which can not only ensure the flatness of copper bar heat sink plate surface, but also improve the efficiency of grinding and polishing, bottom polishing mechanism and top polishing mechanism can grind and polish copper bar heat sink plate in turn, so that the effect of grinding and polishing is better, and it is more beneficial to use when processing copper bar heat sink plate.

This utility model provides a clamping device for slender tubes with a large length-to-diameter ratio, belonging to the field of machining technology. The clamping device includes a clamping body, the right side of which is connected to an elastic clamping cone. A rolling element retainer passes through the elastic clamping cone, and the rolling element retainer has an elongated hole containing a rolling column. A clamping nut is threaded to the outer surface of the clamping body. The left side of the clamping body passes through a needle roller bearing, and the other end of the needle roller bearing is located within a limiting sleeve. By using clamping bolts, this utility model allows the rolling body to move and clamp the tube when the clamping nut is tightened, facilitating clamping or limiting the tube and preventing it from jumping during processing, thus affecting the processing accuracy. By using guide columns, the limiting sleeve can be limited, allowing the limiting sleeve to move stably and preventing deviation during movement.

This utility model discloses a large-diameter pipe installation and handling device, including a mobile lifting frame for moving the pipe. The mobile lifting frame includes: four columns with rollers at the bottom, a horizontal beam plate fixedly connected to the four columns, a gripping mechanism for gripping the pipe wall, and a lifting mechanism for lifting the pipe. The lifting mechanism includes a lifting plate and a lifting drive mechanism for driving the lifting plate to move up and down. Two or more vertical guide columns are fixedly connected to the beam plate, extending downwards from the bottom of the beam plate. The lifting plate is located below the beam plate and has guide holes that slide with the guide columns. The lifting drive mechanism includes a fixed part and a movable part that moves relative to the fixed part. The lifting plate is fixedly connected to the movable part, and the beam plate is fixedly connected to the fixed part. The lower surface of the lifting plate has double slide rails with the axis in the front-back direction. The double slide rails face each other left and right. This utility model can lift and fix the pipe, achieving a hoisting function, thus enabling the handling of large-diameter pipes in situations where a crane is unavailable.