13results about How to "Large diameter range" patented technology

The invention belongs to the technical field of underground coal mine pipeline installation, and particularly relates to a large-pipe-diameter-range pipeline installation mechanical clamping jaw suitable for an underground coal mine roadway, which comprises a fixed installation part, a fixed jaw, a movable jaw, a fixed hydraulic cylinder and a movable hydraulic cylinder. Pipelines with different diameters in a large pipe diameter change range can be grabbed; six groups of rubber rollers are mounted on the fixed jaw and the movable jaw, and at least one group of driving rubber rollers capable of actively rotating can extrude the pipeline and drive the pipeline to roll in the clamping jaw through extrusion contact of the rubber rollers and the pipeline, so that the relative position of a pipeline mounting flange bolt hole is adjusted, and smooth butt joint and bolt insertion are facilitated. The device has the characteristics of small structural space, wide pipe diameter range and convenience in operation.

The invention relates to the field of machine tool accessories, in particular to a guide sleeve assembly of a precision automatic lathe. The device comprises a rotating base, a telescopic shaft sleeve and a clamping structure, the rotating base is rotationally arranged on a machine body of the precision automatic lathe; one end of the telescopic shaft sleeve is connected with a clamping piece of the precision automatic lathe, the other end of the telescopic shaft sleeve is connected with the rotating base, and one end of a bar coaxially penetrates through the rotating base and the telescopic shaft sleeve and then is clamped on the clamping piece; the clamping structure comprises clamping rods and elastic pieces, the clamping rods are located at the rotating base, the clamping rods are evenly arranged in multiple sets in the circumferential direction, each set comprises multiple clamping rods, the multiple clamping rods in each set are arranged at intervals in the axial direction of the bar, and the clamping rods extend in the radial direction of the bar and can slide in the radial direction of the bar; the elastic piece is used for providing clamping force for the clamping rod to clamp the bar. Through the arrangement of the multiple clamping rods, the clamping points of the guide sleeve assembly on the bar are distributed more evenly in the axial direction, and meanwhile the diameter range of the adaptive bar is larger.

The utility model discloses a mechanical large-diameter thread outer diameter measuring device, which comprises a bottom plate, and two positioning sliding rods and two measuring sliding rods which are arranged on the bottom plate, and the two positioning sliding rods can move relatively along the upper surface of the bottom plate, so that the two positioning sliding rods are close to each other to radially clamp a boss of a workpiece to be measured. The two measuring sliding rods can move relatively along the upper surface of the bottom plate, so that the two measuring sliding rods are close to each other and respectively cling to two sides of a thread of a to-be-measured workpiece, scale marking lines are arranged on the upper surface of the bottom plate, and the lower ends of the measuring sliding rods are aligned with the scale marking lines. The length limit of an outer measuring claw of a vernier caliper is broken through, the large-diameter thread diameter measuring device is suitable for measuring the outer diameter of a large-diameter thread, the measurable thread diameter range is wide, the large-diameter thread diameter measuring device is particularly suitable for batch detection of a production line, personal errors are reduced through a positioning sliding rod and scale marks, the measuring precision and stability are improved, only three steps of fixing, pulling and reading are needed during operation, the single-time measuring time is short, and the efficiency is improved. The operation process is simplified, and stable fixation, automatic adaptation and rapid reading are achieved.

The utility model relates to the technical field of chemical waste liquid collecting devices, and particularly discloses a polyester polyol waste liquid collecting device which comprises a galvanized barrel, a barrel opening is formed in the top of the galvanized barrel, a collecting funnel is inserted into the barrel opening, a buffering part is arranged at the abutting position of the collecting funnel and the barrel opening, and the diameter of the buffering part is gradually increased upwards in the axial direction of the collecting funnel. According to the utility model, a stable tripod base is formed by the three supporting frames, so that stable supporting force is provided for the collecting funnel, and when polyester polyol waste liquid is poured, the collecting funnel does not need to be straightened by a worker, so that the labor intensity of workers is reduced, and the production efficiency is improved. And the tripod base can absorb and disperse the impact force generated by pouring the polyester polyol waste liquid on the collecting funnel, so that the position of the collecting funnel cannot deviate in the pouring process, the waste liquid can be drained into a galvanized barrel, and the situation of material scattering is avoided.

The utility model relates to the technical field of drilling, in particular to a drilling device which comprises a machine frame, a drilling machine device and two clamping mechanisms are arranged on the machine frame, the two clamping mechanisms are clamped at the two ends of a workpiece respectively, each clamping mechanism comprises a support, a pressing block and three clamping parts, the clamping parts are installed on the support and the pressing block respectively, and the three clamping parts are connected with the drilling machine device. A workpiece is arranged between the support and the pressing block and clamped through clamping parts, the clamping parts are evenly distributed around the workpiece, the clamping mechanism further comprises a lifting device, the lifting device is installed on the machine frame and connected with the pressing block, and an internal waste collecting device is arranged on one side of the clamping mechanism and can slide in the workpiece. And waste materials in the pipe during drilling are collected. According to the drilling device, waste materials in a pipeline can be effectively and conveniently cleaned away, meanwhile, any damage to the inner wall of the pipeline is avoided, the drilling device further has the automatic pipeline feeding function, the labor intensity of workers is remarkably relieved, and the production efficiency is greatly improved.

The invention relates to the technical field of well drilling equipment, and discloses a multifunctional well mouth grouting mud scraper which comprises a shell arranged at a well mouth, and a drilling tool penetrates through the shell and extends into a shaft; the mud scraping assembly comprises a plurality of mud scraping pieces, the mud scraping pieces are arranged on the upper portion of the inner side wall of the shell at equal intervals in the circumferential direction, an air inlet is formed in the upper portion of the shell and communicates with an external air source, and the mud scraping pieces are controlled by the external air source to extend to make contact with the drilling tool so that mud on the drilling tool can be scraped away; the grouting assembly comprises a rotor and a liquid inlet, the rotor is rotationally connected to the lower portion of the inner side wall of the shell, the two ends of the liquid inlet are connected with the rotor and the slurry pump respectively, and drilling fluid enters the rotor on the lower portion of the shell from the slurry pump so as to drive the rotor to rotate to wash the drilling tool and convey the drilling fluid into the shaft. The working mode of scraping mud while grouting is achieved, the applicable drill string diameter range is wider, the wellhead operation process is simplified, manpower and time cost are saved, the well control risk is reduced, and the working efficiency is improved.

The utility model discloses a chuck is with multisection double -cylinder air cylinder belongs to air cylinder technical field, and it aims at solving the problem of existing chuck double -cylinder air cylinder stroke is limited, and the single clamping force leads to the narrow adaptation range, and the thin -walled pipe is easy to deform. The air cylinder includes cylinder body, and two first piston cavities of penetrating are symmetrically arranged in the cylinder body, and the big piston is movably embedded in the first piston cavity and is internally provided with the second piston cavity, and the small piston is embedded in the second piston cavity, the air inlet pipeline supplies the gas to the first piston cavity through the gas delivery groove and the cross air inlet groove, and the air return pipeline drives the big / small piston reset through the big piston air return groove and the air return pipe structure respectively, and the big / small piston single section stroke is 45cm, and the total stroke is 90cm. The utility model discloses through the double -piston nesting and the hierarchical gas circuit design, realizes the stroke extension and the clamping force grading, and simultaneously through multiple sealing guaranteeing the air tightness, and the stable structure low -noise, effectively expands the chuck adaptation range, and protects the thin -walled pipe processing quality.

The utility model relates to the technical field of chemical product storage, in particular to a storage box for chemical product sales. Comprising a box body, a cover body is hinged to one side of the upper end of the box body, a partition plate is fixed in the box body, a plurality of open holes are formed in the partition plate, a plurality of stabilizing assemblies are fixed to the lower end of the partition plate, the stabilizing assemblies correspond to the open holes in a one-to-one mode, and the corresponding open holes and the stabilizing assemblies are concentric; the arc-shaped plates are concentric with the holes in the inner sides of the arc-shaped plates, a plurality of vertical grooves are formed in the inner edges of the arc-shaped plates, lower elastic rods are fixed in the upper ends of the vertical grooves, and upper elastic rods are fixed to the inner edges, above the vertical grooves, of the arc-shaped plates. The upper elastic rod and the lower elastic rod are arranged on the arc-shaped plate, after a container containing chemical products is inserted into the open hole, the upper elastic rod and the lower elastic rod can centralize and stabilize the container containing the chemical products, and the stability of the container containing the chemical products can be guaranteed in the transportation process.

The utility model relates to a thin-wall pipe fitting grabbing manipulator which comprises a supporting arm, and a connecting base is installed at the top of the supporting arm. The supporting arm comprises a top plate located at the top and two vertical plates extending downwards from the top plate, and a middle area is formed between the two vertical plates. A pair of cylinders of which the bottoms are hinged is mounted in the middle area; the middles of the pair of clamping arms are rotationally connected to the supporting ends on the two sides of the lower portion of the vertical plate correspondingly. Push rods of the pair of air cylinders are correspondingly connected to the top ends of the clamping arms respectively. Rubber chucks are respectively mounted at the lower ends of the clamping arms; the auxiliary supporting plates are connected to the outer vertical face, away from the center, of the vertical plate through connecting screws; the vertical plate is provided with a first avoiding area; according to the scheme, positioning and clamping of the thin-wall part can be achieved without too large clamping force, and the grabbing effect is greatly improved; and the device has the advantages of simplicity in manufacturing, convenience in use, no scratch on part surfaces, large adaptive pipe fitting diameter range and the like.

The utility model relates to a kind of anticorrosive pipe end pasting paper devices in anticorrosive steel pipe, belong to spiral submerged arc steel pipe anticorrosive spraying technical field, including inner side plate and outer side plate, inner side plate and outer side plate between rotation setting adhesive tape wheel and auxiliary wheel, adhesive tape wheel is used to install adhesive tape, auxiliary wheel is used to compact and stick adhesive tape on steel pipe inner wall;The height of outer side plate is greater than inner side plate, and outer side plate can be used to adhere with steel pipe end, positioning the device;The utility model is convenient and fast, improves pipe end pasting paper efficiency, and each steel pipe pasting paper operation only needs 3-4 seconds;The precision of using the utility model pasting paper is high, and stability is strong, can make adhesive tape paper evenly adhere on steel pipe inner wall, without wrinkle, not easy to fall off;The utility model is easy to disassemble and assemble, easy to manufacture, and low in cost;The utility model is suitable for steel pipe diameter range, and pipe diameter φ508-φ1626mm can be used.

This invention discloses a method for preparing a seven-hole multilayer propellant by end-face spraying, applicable to the end-face sealing of multilayer propellants. The invention employs a honeycomb mold to constrain the propellant columns, enabling the orderly arrangement of the seven-hole multilayer propellant. The larger diameter of the inner holes in the honeycomb mold facilitates filling. A solvent-based swelling and sealing technique ensures a tight fit between the outer wall of the seven-hole multilayer propellant and the inner wall of the honeycomb mold, protecting the outer wall. Using a spraying liquid made of the same material as the outer layer of the seven-hole multilayer propellant forms a protective layer with the same composition as the outer layer on the end face, significantly improving the combustion pyrolysis properties of the propellant. This invention solves the problem of only being able to prepare seven-hole multilayer propellants by end-face spraying, providing a technical means for preparing seven-hole multilayer propellants by end-face spraying.

This invention discloses a method for preparing end-face patches for seven-hole multilayer propellants, applicable to end-face sealing of multilayer propellants. The invention employs a honeycomb mold to constrain the propellant cylinders, enabling the orderly arrangement of the seven-hole multilayer propellant. The large diameter of the inner holes in the honeycomb mold facilitates filling of the propellant. A solvent-based swelling and sealing technique ensures a tight fit between the outer wall of the propellant and the inner wall of the honeycomb mold, effectively fixing the propellant's outer wall. The mold's cutting disc structure allows for the simultaneous removal of excess patch portions, yielding multiple samples with end-face patches, significantly improving preparation efficiency. This invention solves the problems of low preparation efficiency and poor quality of end-face patches for seven-hole multilayer propellants, providing a high-quality, high-efficiency technical means for preparing end-face patches for seven-hole multilayer propellants.

The utility model relates to a tool structure for turning, rolling and rotating a steel pipe between a pipe frame and a roller frame. The device is arranged between two adjacent rows of pipe frames of a steel pipe production line; a telescopic rod of the air cylinder is connected with a turning plate linkage pull rod consistent with the extending direction of a steel pipe. The turning plate linkage pull rod is connected with a plurality of turning plates which move synchronously in the extending direction of the steel pipe; the turning plate linkage pull rod is connected with one ends of a plurality of connecting rods, the other ends of the connecting rods are connected with a rotating shaft, and the rotating shaft is connected with a plurality of turning plates through connecting pieces. The upper end of the turning plate is provided with a first inclined part and a second inclined part, and a step part is formed between the lower end of the first inclined part and the higher end of the second inclined part; and a roller frame is arranged between two adjacent rows of pipe frames. Steel pipes can be transferred among the pipe frame, the machining position and the next pipe frame, the structure is simple, efficiency is high, and the applicable steel pipe diameter range is wide.