Uniform and efficient drying device for polyvinyl chloride insulated cable

The invention relates to the technical field of polyvinyl chloride insulated cable production, and provides a uniform and efficient drying device for a polyvinyl chloride insulated cable, which is convenient for uniformly and efficiently drying and cleaning moisture on the surface of a plastic insulating layer and moisture and impurities between the plastic insulating layer and a wire core. The sheath extrusion molding machine effectively guarantees normal proceeding of a sheath extrusion molding procedure, comprises a rack, a moisture blow-drying area, a moisture wiping area and a moisture evaporation area are sequentially arranged along the feeding end and the discharging end of the rack, and further comprises a moisture air-drying mechanism, a moisture wiping mechanism and a moisture evaporation mechanism, the moisture air-drying mechanism is installed in the moisture blow-drying area, and the moisture wiping mechanism is installed in the moisture evaporation area. The moisture air-drying ...

Automatic pipeline repairing hydraulic device and method suitable for snakelike robot

The invention provides an automatic pipeline repairing hydraulic device and method suitable for a snakelike robot, the automatic pipeline repairing hydraulic device comprises a snakelike robot head steering engine and a repairing hydraulic device, and the repairing hydraulic device leans against a to-be-repaired pipeline part through the snakelike robot head steering engine. When the snakelike robot drives the repairing hydraulic device to approach the pipeline and the leakage position of the pipeline is not perpendicular to the inner wall plane of a pipe clamp in the repairing hydraulic device, the angle of the repairing hydraulic device is adjusted to be perpendicular to the pipeline through rotation of a hydraulic motor III, and when the repairing hydraulic device is perpendicular to the pipeline, the snakelike robot lifts the repairing hydraulic device to repair the pipeline. When the leakage position is not at the stress positions of the two sides of the pipe clamp, the motor II can ...

FLUXES FOR SOFT SOLDERING OF ALUMINUM AND ITS ALLOY

FLUXES FOR SOFT SOLDERING OF ALUMINUM AND ITS ALLOY

Pipeline leakage remote control plugging device and method suitable for snakelike fire-fighting robot

The invention provides a pipeline leakage remote-control plugging device suitable for a snakelike fire-fighting robot, the pipeline leakage remote-control plugging device comprises a movable mechanism and a fixing mechanism, the fixing mechanism is integrally designed and comprises a supporting structure and a fixing structure, and the fixing mechanism is provided with a fixing pin used for fixing a flexible pipe clamp; the movable mechanism is integrally designed in a combined mode, a front shell and a rear shell are fixed through bolts, the bottom of the movable mechanism is fixed to a sliding block through screws, movement of the sliding block on a sliding rail is limited through a sliding block baffle, a servo motor and a gear are installed at the top end of the movable mechanism, and rotating work of a stud is achieved. A hook spring used for resetting after pipeline repairing work is completed is arranged between the sliding block and the sliding block baffle. The steering wheel is ...

Automatic cloth wrapping equipment for polyvinyl chloride insulated cable

The invention relates to the technical field of cable processing, and provides a polyvinyl chloride insulated cable automatic cloth wrapping device which comprises a mounting box, a driving mechanism is arranged in the mounting box, one end of the mounting box is rotationally connected with a rotating ring sleeve, the driving mechanism is used for driving the rotating ring sleeve to rotate, the device further comprises a wire leading cylinder, and mounting openings are formed in the two sides of the mounting box. The automatic cloth wrapping equipment for the polyvinyl chloride insulated cable comprises two mounting ports, a wire leading cylinder is arranged between the two mounting ports, a cable fixing assembly is arranged on the inner wall of the wire leading cylinder and used for keeping the cable stable in the conveying process, and the number of the material fixing mechanisms is multiple. According to the cable cloth wrapping device, fixing parts do not need to be replaced according ...

Heterocyclic peptide ketoamides

A novel class of peptide alpha-ketoamides useful for selectively inhibiting calpains, selectively inhibiting cysteine proteases, and generally inhibiting all cysteine proteases, having the formula M-AA2-AA1-CO-NH-(CH2)n-R3. Processes for the synthesis of peptidyl alpha-ketoamide derivatives. Compositions and methods for inhibiting cysteine proteases, inhibiting calpains, and treating disease caused by cysteine proteases and calpains are provided.

Safety protection screen system that steel structure installation used

The utility model relates to a safety protection screen system that steel structure installation used, include: attach to the system of climbing of steel construction, including climb a structure witharticulate in a hydraulic pressure climbing mechanism of structure bottom climbs, hydraulic pressure climbing mechanism's bottom articulates in the correspondence on the steel construction, through the jacking of hydraulic pressure climbing mechanism thereby it has realized to climb a structure it follows to climb a structure the steel construction climbs, and connect in the safety protection screen system of the system of climbing, safety protection screen system enclose keep off in the periphery of steel construction and along with the system of climbing is together climbed. The construction region of steel construction is sheltered from to adoption safety protection screen system, guarantees the steel structure installation overall process and among ann fully enclosed environment, hasguaranteed ...

Phased array radar beam pointing precision rapid verification method

The invention relates to a phased array radar beam pointing precision rapid verification method. The method comprises the following steps: erecting or searching a fixed target in a radar detection range, adding frequency offset to a radar local oscillator and closing a clutter map to obtain angle measurement results of the target in different antenna driving orientations and pitching states; according to the rotation relation between an antenna array plane coordinate system and an antenna driving coordinate system, a theoretical formula of electric scanning direction change caused by antenna driving change is obtained, and the final beam pointing precision of the radar is verified according to the matching degree of actually measured electric scanning beam pointing represented by a radar angle measurement result in different antenna driving states.

Automatic pipeline repairing device for snakelike robot

The invention provides an automatic pipeline repairing device for a snakelike robot, the automatic pipeline repairing device comprises a rotating part and a repairing part, the first part is formed by combining a snakelike robot head steering engine and a repairing device, and rotation of the repairing device can be achieved through swinging of the steering engine of the robot head; the second part is a repairing device, when the snake-shaped robot leans against the pipeline, the pipeline touches a thin rope, the thin rope pulls down a vertical rod to a pipe clamp, a rectangular groove of a shell is combined with a rectangular buckle of the pipe clamp, so that the pipe clamp is fixed to the shell, then a motor rotates to drive a gear to rotate, a threaded rod is fixed to the gear, the gear rotates to drive the threaded rod to rotate, and the pipeline is repaired. The screw and the cylinder are combined through threads, the screw rotates to drive the cylinder to rotate and move outwards, ...