5results about How to "Reduce positive pressure" patented technology

The invention discloses a multi-cylinder single-action reciprocating fertilization pump, and belongs to the technical field of agricultural mechanical equipment. The modularized pump body is formed by combining multi-cylinder pump bodies, the modularized pump body is installed on the modularized pump head body, a piston element is arranged in each working cavity corresponding to the multi-cylinder pump body, the stroke volumes of the multiple piston elements in the corresponding working cavities are equal, and phase angles are staggered by 0-180 degrees; a liquid inlet and a liquid outlet which are communicated with the corresponding working cavities of the multi-cylinder pump body are formed in the modularized pump head body; the bidirectional offset crank connecting rod mechanism is provided with an optimal transmission angle, and the bidirectional offset crank connecting rod mechanism serves as a driving power end and is in driving connection with a piston element of the three-cylinder pump body so as to drive the piston element to do reciprocating rectilinear motion in the corresponding working cavity; and the valves are mounted at the liquid inlet and the liquid outlet. The multi-cylinder single-action reciprocating type fertilization pump has the advantages of being excellent in force transmission performance, flexible in combination, high in transmission efficiency and the like.

The utility model provides an inclined strut core-pulling mechanism and an injection mold, the inclined strut core-pulling mechanism comprises a movable mold insert, a clamping piece and a driving assembly, the clamping piece comprises a first inclined strut and a second inclined strut, and the first inclined strut and the second inclined strut are both provided with fastening ends; the clamping piece and the movable mold insert are in sliding connection in the first direction so that the two fastening ends can get close to each other in the second direction to release a product or get away from each other to support the product, the first direction is perpendicular to the second direction, the ends, away from the product, of the first inclined strut and the second inclined strut are hinged to the driving assembly, and the driving assembly can drive the clamping piece to move in the first direction.

The utility model relates to an adsorption type curtain wall crawling robot self-adaptive foot, and relates to the field of crawling robots, the adsorption type curtain wall crawling robot self-adaptive foot comprises a foot shell, a bottom shell, a driving crawler wheel and an adjusting spring, the foot shell is of a barrel-shaped structure with one side provided with a bottom, the bottom shell is slidably connected to an opening of the foot shell, and the driving crawler wheel is installed at the inner bottom of the foot shell; the adjusting spring is arranged between the foot shell and the bottom shell, one end of the adjusting spring is fixed to the foot shell, the other end of the adjusting spring is fixed to the bottom shell, and a rubber bottom ring is arranged on the side, away from the foot shell, of the bottom shell. The glass curtain wall has the effect of reducing friction force generated when the rubber bottom ring makes contact with the glass curtain wall.

This invention relates to the field of medical and nursing device technology, and discloses a hammock-type assisted turning bed and a turning method, including a bed frame body. The bed frame body includes multiple functional segments arranged sequentially along its length. Each functional segment is equipped with a bed surface driving mechanism and a support adjustment mechanism. The bed surface driving mechanism includes a roller winding device and a bed surface. Two roller winding devices are symmetrically arranged on both sides of the bed frame body of the functional segment. The two ends of the bed surface are wound around the rollers of the corresponding roller winding devices. The support adjustment mechanism is located below the bed surface and includes multiple electric cylinders arranged along the width direction of the bed frame body. The hammock-type assisted turning bed and turning method provided by this invention solve the problems of high risk of shear friction injury, high risk of pressure sores, poor comfort, and insufficient safety and adaptability in the practical application of existing technologies.

The present invention provides a continuous pushing and twisting robot for vascular interventional instruments, including a clamping and delivery module, wherein the vascular interventional instrument passes through the clamping and delivery module and is clamped by the clamping and delivery module, wherein a rotatable unit is provided in the clamping and delivery module, and the rotatable unit drives the vascular interventional instrument to move axially; a rotation control mechanism is connected to the clamping and delivery module and can drive the clamping and delivery module to rotate, so as to realize the circumferential rotation of the vascular interventional instrument. Different from the existing situation in which the tube wire delivery mechanism and the rotation control mechanism are composed of their own clamping mechanisms, the present invention realizes that the delivery mechanism and the rotation control mechanism share the same clamping mechanism to clamp the tube wire, thereby realizing the rotation and delivery action of the tube wire, greatly reducing the overall size of the robot, realizing the miniaturization and lightweight of the robot, and facilitating transportation and installation.