4results about How to "Reduce moment arm" patented technology

The application discloses a solar cell panel support shaking early warning device, and relates to the technical field of solar panel supports, which comprises a base, a supporting cylinder fixedly connected to the upper surface of the base, a motor fixedly connected between the inner walls of the base, a storage rack slidingly connected between the inner walls of the supporting cylinder, a screw rod rotatably connected to the bottom of the inner walls of the supporting cylinder, the output end of the motor being fixedly connected to the bottom end of the screw rod, the screw rod being threadedly connected with the bottom end of the storage rack, and U-shaped pressing rods being slidingly connected to the outer surface of the supporting cylinder at equal intervals. The device can reduce the overall height of the device by sliding the storage rack into the supporting cylinder, thereby reducing the overall gravity center of the device, making the device easier to keep balanced, and reducing the area of the device subjected to wind, the force arm of the device, the torque of the wind force acting on the device, and the influence of the wind force on the device, so that the shaking amplitude of the device is reduced.

The application belongs to the technical field of switches and particularly relates to a grounding switch and a switch cabinet. The grounding switch comprises a static contact and a dynamic contact. The static contact comprises a first static contact plate and a second static contact plate which are connected perpendicularly to each other. The dynamic contact comprises a first dynamic blade and a second dynamic blade which are arranged oppositely. The first static contact plate is arranged on the side of the second static contact plate close to the dynamic contact. When the switch is closed, the dynamic contact can move to the side close to the static contact, so that the first static contact plate is clamped between the first dynamic blade and the second dynamic blade and is in contact with the first dynamic blade and the second dynamic blade. When the switch is opened, the first dynamic blade and the second dynamic blade can move to the side away from the static contact, so that the first dynamic blade and the second dynamic blade are separated from the first static contact plate. The application can improve the insulation performance of the grounding switch, reduce the force arm of the dynamic contact, and make the operation of the dynamic contact more labor-saving.

The utility model discloses a diamond saw blade edging device capable of stably clamping, and relates to the related field of saw blade edging, the diamond saw blade edging device comprises a base, the output end of a driving motor is connected with a positioning disc through a connecting frame, the positioning disc abuts against the circle center of a saw blade body, extension frames are installed on the outer side of the positioning disc at equal angles, and the extension frames are connected with the base. A positioning plate is connected into the extending frame in a sliding mode, and the positioning plate clamps and positions the edge of the saw blade body. A spraying pipe is slidably connected to the left side of the second stand column and connected with the water tank through a water pump, and the spraying pipe and the water pump are fixed to the left side of the second stand column. According to the diamond saw blade sharpening device capable of achieving stable clamping, in the using process, through the arrangement of the positioning disc and the positioning plate, the circle center and the periphery of a saw blade can be positioned and clamped, the force arm during sharpening is reduced, shaking is avoided, meanwhile, spraying cooling is conducted during sharpening, and the situation that the diamond saw blade and a grinding wheel are damaged due to the high temperature is prevented.

The utility model relates to medical instrument technical field provides a kind of biopsy forceps, its steel wire hook includes with a pair of corresponding two strands of steel wire of forceps cup, the distal end of two strands of steel wire is crossed in first position;Jaw assembly further includes: limiting structure, it is set between two strands of steel wire, and limiting structure is located in the side of first position away from forceps cup;When traction steel wire hook, limiting structure and two strands of steel wire are in contact.The biopsy forceps provided by the utility model is set between two strands of steel wire limiting structure, and limiting structure is located in the side of first position away from forceps cup;When traction steel wire hook, limiting structure and two strands of steel wire are in contact, can prevent steel wire deviation and lead to force arm reduction, to make the force that steel wire hook transmits can be more effectively applied to forceps cup, guarantee the occlusal force of forceps cup, without repeatedly grabbing target tissue, reduce tearing and bleeding situation, improve operation efficiency, reduce operation time.