44results about How to "Reduce motion friction" patented technology

The invention relates to the technical field of switching valves used for pneumatic conveying systems, and in particular discloses a single-disk valve which is sealed reversely. The inlet valve body of the single-disk valve is in a cylindrical structure of which the upper end and the lower end are provided with flange disks; a valve rod hole is formed in the flange disk at the lower end of the inlet valve body; the outlet valve body of the single-disk valve is in a funnel-shaped structure of which the upper end and the lower end are provided with flange disks; the flange disk at the upper endof the outlet valve body is matched with the flange disk at the lower end of the inlet valve body; a valve disk is in an inverted conical disk structure of which the edge is a sharp edge; and a valverod assembly passes through the valve rod hole of the inlet valve body and is arranged between the inlet valve body and the outlet valve body so that the valve rod assembly can drive the valve disk to open or close a channel in the lower end surface of the cylinder of the inlet valve body. In the single-disk valve, the influence on the action of a valve caused by the accumulation and the slag-bonding of materials can be eliminated by a funnel-shaped valve cavity; simultaneously, the single-disk valve is simple in structure and convenient to maintain, and has the characteristics of lighter weight, lower cost and longer service life compared with other material cutout valves such as sealing ball valves and the like in the same specification, hardness and density; and a plurality of single-disk valves can be connected in series or are installed and used by exchanging with other ball valves.

The invention discloses a patient caring bed with a turnover assisting function and a turnover assisting method thereof and belongs to the field of caring beds. The patient caring bed comprises a bed body frame, a bed plate, an ejection mechanism and a cloth winding mechanism, wherein the cloth winding mechanism comprises cloth winding rolls, a driving device and turnover cloth; the cloth winding rolls are arranged at the two sides of the caring bed; the driving device is used for driving the cloth winding rolls to rotate; the two ends of the turnover cloth are respectively and fixedly wound on the cloth winding rolls at the two sides; the turnover cloth between the two cloth winding rolls are laid on the bed plate; the ejection mechanism comprises two ejecting rolls positioned under the turnover cloth, an ejecting bracket for installing the ejecting rolls, an electric pushing rod arranged under the ejecting bracket and a guiding device. The invention also discloses the turnover assisting method of the patient caring bed. The patient caring bed and the turnover assisting method disclosed by the invention have the advantages that the inclination of the body of a patient is realized by utilizing the ejection mechanism and the cloth winding mechanism to assist serving staffs to turn over the patient, the turnover action is gentle, the comfort level of the patient is high, and the working intensity of the serving staffs is greatly reduced.

One kind of rate of fluid flow adjusting device, including the outer covering, installs in the outer covering the electrically controlled valve body and the control electrically controlled valve body movement control circuit board, states the electrically controlled valve body to include the coil, the skeleton, the magnetic core good support, the ball arm of force and the magnetic core stick, outside the skeleton circles the coil, the coil causes the welding control circuit board, for the skeleton center magnetic core good support through two designs balls arm of force with the skeleton company is a body, a magnetic core stick end loads fixes on the magnetic core good support, the magnetic core stick another end surface pastes is useful coats the idle talk to the control electromagnetic screen to open / shutting down gas bag, The outer covering is the electromagnetism screening can, the control circuit board surface has the shield level, on the electrically controlled valve body fixed once more control circuit board, has the electromagnetism screening can and the seal electromagnetic screen gap control circuit board permanent connection constitution electromagnetism entire screening can. Uses this invention, screening can eliminated the electronmagetic interference through the electromagnetism, the electric circuit control section and the product design is a body, big simplified the product zero number of articles, reduced the production cost, is the production is easier to manage the control, makes the product reliability greatly to enhance.

The invention discloses a proportional metering oil needle for load pressure displacement feedback, which adopts a double-movable cylinder body of a valve sleeve and a valve core and a hollow oil needle structure with a constraint spring, and adapts the load fluctuation by designing the spring stiffness to make the metering oil needle output The flow rate is basically constant, and only the external mechanism controls the displacement of the valve sleeve body to achieve the purpose of flow ratio adjustment. The spring seat of the metering oil needle is rigidly connected with the outer cylinder, the adjusting bolt can adjust the spring preload, and the oil needle is supported by the spring. The external drive mechanism adjusts the position of the inner cylinder to control the opening of the oil needle. When the position of the inner cylinder remains unchanged, the oil needle changes the expansion and contraction amount through the spring to balance the load pressure, so that the metering oil needle moves in a small range to realize the fine adjustment of its opening. The spring stiffness is designed according to the flow equation, so that the change of the opening offsets the change of the flow area caused by the pressure difference fluctuation. The invention realizes the accurate proportional control of the flow rate, and simultaneously simplifies the structure of the metering device containing the oil needle, and has great practical value.

The invention discloses a transplanting mechanism special for male parent two-line transplanting of hybrid rice seed production. The transplanting mechanism comprises a transmission part, a left transplanting mechanism and a right transplanting mechanism, wherein the left transplanting mechanism and the right transplanting mechanism are in symmetrical structures, the left transplanting mechanism is respectively in hinge connection with the left end of a gear shaft of the transmission part and the rear left part of a transmission case through a left crank shaft and a left rocker shaft, the right transplanting mechanism is respectively in hinge connection with the right end of the gear shaft of the transmission part and the rear right part of the transmission case through a right crank shaft and a right rocker shaft, and the crank of the left crank shaft and the crank of the right crank shaft are arranged by 180 degrees at two ends of the gear shaft. By adopting the transplanting mechanism, the left seedling claw of the left transplanting mechanism and the right seedling claw of the right transplanting mechanism realize a two-row staggered transplanting function, the final transplanting effect of the one-stage two-row male parent is 'delta-shaped'or triangular, specific agronomic requirements of male parent one-stage two-line interval transplanting of the hybrid rice seed production can be met, seedling intervals are uniform, the seedling transplanting quality is good, the production efficiency is high, and the labor intensity of the hybrid rice seed production is effectively reduced.

The invention relates to the technical field of pneumatic elements, in particular to a sliding-sleeve type two-position three-way pneumatic high-speed switching valve, which comprises a valve body, wherein a valve cavity is molded in the valve body, a gas inlet, an exhaust port A and an exhaust port B are arranged in the valve body, the exhaust port A is communicated to the top of the valve cavity through a through hole A, the gas inlet is communicated to the upper part of the valve cavity, a sealing element is arranged on the inner wall of the valve cavity, a fixed block is molded in the valve cavity, a through hole B corresponding to the through hole A is arranged in the fixed block, the through hole B is communicated with the exhaust port B, a sealed sliding-sleeve assembly is arranged between the fixed block and the sealing element, and a reset spring is arranged between the sealed sliding-sleeve assembly and the fixed block. No motive seal exists between sealing pairs of the sliding-sleeve type two-position three-way pneumatic high-speed switching valve, so that the working life of the valve is prolonged, and the kinetic friction is reduced.

The invention discloses a three-way valve assembly of a new energy vehicle cooling system and a control method and belongs to the technical field of new energy vehicles. Through the three-way valve assembly of the new energy vehicle cooling system and the control method, the problems of poor leakproofness, jamming, instable work, low precision, high cost and the like in the prior art are solved, and high applicability is achieved particularly for special occasions with strict requirements for work environment and performance. The three-way valve assembly of the new energy vehicle cooling system comprises a three-way valve shell and a three-way valve core. A drive drives the three-way valve core to rotate, and then a cooling liquid channel is adjusted. The drive comprises a worm-gear transmission mechanism driven by a motor, and a worm gear is connected with a reduction gear unit. The three-way valve core is installed on a reduction gear of the reduction gear unit. The angle needed by rotation of the motor is controlled by a controller. The three-way valve assembly of the new energy vehicle cooling system and the control method have the advantages that structure is reasonable, application range is wide, and work is stable and reliable, and good economic benefits and wide market prospects are achieved.