3results about How to "Avoid falling accidents" patented technology

This invention discloses a constant torque anti-jamming wellbore dressing device and its usage method. The device includes: an upper connector, a constant torque mechanism, a central tube, and a lower connector connected in sequence; a reduced diameter anti-jamming mechanism and a milling dressing mechanism installed outside the central tube; a torque transmission component of the constant torque mechanism transmits the torque from the upper connector to the central tube; a first shear pin is provided between the constant torque mechanism and the central tube, which can be sheared when the reverse torque force exceeds a set threshold; a torque setting component of the constant torque mechanism is used to set the torque under normal operating conditions; the reduced diameter anti-jamming mechanism can move up and down under the pressure difference between the inside and outside of the central tube; the first conical surface of the reduced diameter anti-jamming mechanism and the second conical surface of the milling dressing mechanism cooperate, and when the reduced diameter anti-jamming mechanism moves up and down, the protrusion of the milling dressing mechanism extends or retracts. It can set the torque, prevent drill pipe from falling off, effectively prevent stuck drill pipe, and improve the efficiency of wellbore dressing operations.

The utility model discloses a young donkey supplementary feeding partition fence for livestock breeding, concretely relates to the technical field of livestock breeding, including the partition fence subassembly for partitioning young donkey supplementary feeding, the partition fence subassembly includes two fixed piles and the barrier fence, the barrier fence is located between two fixed piles, and the one side of fixed pile corresponds the barrier fence and is provided with the clamping hole, the both ends of barrier fence respectively extend to the inside of the clamping hole on two fixed piles, the utility model discloses the displacement of barrier fence is positioned through the clamping hole, makes barrier fence only can carry out vertical type's up and down displacement, thereby make the barycenter of barrier fence lower and guarantee structural stability, avoid the condition that partition fence subassembly disperses apart under the impact of colt, and when the barrier fence is subjected to the force from different directions, can be more evenly scattered to whole barrier fence structure, reduced the situation that the local force is too big and leads to damage, thereby guarantee the isolation effect of partition fence subassembly.

This application discloses a hot-dip galvanizing lifting device for guardrails, including a lifting assembly, multiple traction ropes, multiple swing assemblies, and multiple clamping assemblies. The clamping assemblies are connected to the swing assemblies, and are connected to the lifting assembly via the traction ropes. Each swing assembly includes a base, a rotating shaft, and a swing drive mechanism. The rotating shaft is rotatably connected to the base, and the swing drive mechanism is housed within the base and connected to the rotating shaft. Each clamping assembly includes a support seat, a lifting mechanism, a bearing seat, and a clamping mechanism. The support seat is fixedly connected to the rotating shaft via a connecting frame. The lifting mechanism is mounted on the support seat, the bearing seat is fixedly connected to the movable end of the lifting mechanism, and the clamping mechanism is pivotally connected to the bearing seat. This effectively improves the stability of the guardrail during lifting and the efficiency of hot-dip galvanizing. It also effectively removes residual impurities and bubbles from the guardrail surface, thus ensuring a tight bond between the zinc layer and the substrate and improving the protective performance of the guardrail.