44results about How to "Avoid shear stress" patented technology

A device for interconnecting a card including at least one first fluid channel, emerging from a connection side parallel to a support side, the interconnection device including: a first surface configured to receive the support side of the card; a second surface parallel to the first surface, from which a second fluid channel emerges; and a mechanism to hold the card in place, configured to hold a connection side of the card pressed against the second surface of the device, such that first fluid channel is in fluid connection with the second fluid channel.

A cross-linked coupling for crank-connecting rod piston compressor is disclosed. A short cylindrical cross pin with screwed through hole perpendiculart to its basic line is used to pivot a cross bodyhaving a single pin hole seat to the connecting rod with smaller fork end. Said pin hole seat has two through holes coaxial with the sliding cylindrical surface. The piston rod whose end has externalscrew passes through the bigger hole on pin hole seat and then is turned into the screwed through hole on cross pin. A short cylinder at the end is inserted in another hole to locate the cross-linkedcoupling. A cross nut has a cylindrical end, which is also inserted said bigger hole to lock the piston rod to the cross-linked coupling.

The invention provides an aluminum alloy superstructure block hoisting method, which comprises the following steps of (1) determining the quantity of multiple hoisting points, positions of multiple hoisting points and an integral hoisting method of an aluminum alloy superstructure block according to the weight of the aluminum alloy superstructure block, a structural form and a gravity core; (2) producing a hoisting bracket for hoisting the aluminum alloy superstructure block; (3) designing and installing temporary reinforcement onto the aluminum superstructure block according to the integral hoisting method; (4) installing one hoisting hanger on each position of multiple hoisting points; and (5) vertically joining the hoisting hangers with the hoisting bracket through a wire cable, and utilizing the hoisting bracket to carry out the multipoint vertical hoisting. According to the hoisting method, not only can the deformation control problem for hoisting the aluminum superstructure block be solved and sectional construction of the aluminum alloy superstructure block be realized, but also the hoisting hangers and the temporary reinforcement for the hoisting are convenient to disassemble, and the block hoisting time can be shortened.

The invention discloses a turning process method for a large container component. The method is characterized by comprising the steps of: turning the container component from the vertical direction to the horizontal direction, and turning the container component from the horizontal direction to the vertical direction. The problem that the large container component is turned without a lug is solved in a process from sling mounting to turning, a flange sealing surface is protected through an additionally arranged sealing base plate for protection, a method for applying a pre-tightening force on the bolt is adopted, the frictional resistance of the contact surface between a sling and the container component is increased, a double-end main bolt is prevented from bearing the shear force, and the fatigue limit of the bolt is reduced. In addition, a uniaxial double-wheel sling is hung on two wheels by utilizing two annular steel wire ropes, so that the container component is stable during turning and lifting, and the turning and lifting difficulty and risk are reduced.

The invention relates to a system including a pinion (5) and a toothed wheel (7) coaxially mounted relative to a pivoting arbour (3). According to the invention, the gear system (1) includes a securing device (21) between the pinion and the wheel so as to prevent any relative movement of one with respect to the other. The invention also relates to methods of manufacturing the toothed wheel (7) and the final assembly of the gear system (1). The invention concerns the field of timepieces.

The bar (1) has a knitting tool receiver (4) attached at a body (2) and divided into multiple segments (7, 8) in a longitudinal direction (3), where each segment is fixed at the body in individual positions (9, 10) in the longitudinal direction by form closure. The knitting tool receiver comprises grooves (6) and a partition line (17) between the adjacent segments at edges of the grooves. The body comprises recesses (13, 14), where projections (11, 12) of the segments project into the recesses. The segments are made of metal, a ceramic material or a plastic i.e. fiber reinforced plastic. An independent claim is also included for a method for manufacturing a knitting tool bar.

The invention relates to a stirring element of a stirrer for mixing and/or homogenizing or suspending flowable media, which is substantially spherical in shape. The invention further relates to a stirrer having at least two stirring elements according to the invention.

The invention relates to a vertical support method for a B type fuel tank at a container ship step. According to the method, a special-purpose vertical support device is used; the upper part of the vertical support device is supported at the inclined surface of the side wall of a B type fuel tank and the lower part is arranged a step inside a container. The vertical support device includes a fueltank support, a step base, a laminated batten part and a stainless steel plate. In addition, the method includes the following steps: assembling and welding the fuel tank support on a prefabricated steel frame platform; fixing the laminated batten part and the stainless steel plate at the bottom of the fuel tank support by epoxy; carrying out normality installation on the step base and a step connecting elbow plate and welding the step base at a ship structure by full-penetration welding; setting the lower laminated batten and the stainless steel plate at the top of the step base; and after overall completion and in-place hoisting of the B type fuel tank, placing the B type fuel tank at a corresponding accurate position directly. Therefore, the vertical load of the LNG fuel tank of the container ship is supported effectively.

Gas flow reversing element (1) for the use of a gas supply (14) under excess pressure, in particular inspiratory gases, for selectively generating a gas flow (8) from or to a line connector (6) which can in particular be connected to an airway of a patient, said gas flow reversing element (1) being designed as a main piece (2), the main piece (2) at least comprising an inflow region (9), a nozzle region (15) and a mixing region (16), and further a branching piece (3), the inflow region (9) connecting a pressure connector (4), for connection to the gas supply (14), to at least one closable outlet opening (5) arranged in the mixing region (16), and the branching piece (3) connecting the nozzle region (15) of the main piece (2) to the line connector (6), wherein a nozzle (7), particularly an injector nozzle, is configured and arranged in the nozzle region (15) in such a way that, a gas flow (8) flowing along a first flow path (20) through the main piece (2) from the pressure connector (4) subsequently through the inflow region (9), the flow region (28), the nozzle region (15) and through the nozzle (7) into the mixing region (16) to the outlet opening (5), with the outlet opening (5) opened, can generate a gas flow (8) in the branching piece (3) flowing along a second flow path (21) from the line connector (6) and subsequently through the branching piece (3), through the nozzle region (15) and through the mixing region (16) to the outlet opening (5), wherein the gas flow reversing element (1) further comprises a bypass (18) connecting the pressure connector (4) and the line connector (6) so that a gas flow (8) can flow along a third flow path (22) via the inflow region (9), the bypass (18) and the branching piece (3), wherein at least the bypass (18) and the flow region (28) are closable by at least one closing element (19), so that the gas flow (8) can bypass the nozzle (7) in the nozzle region (15) via the bypass (18) along the third flow path (22). The invention further relates to method for controlling expiration of a patient.

The invention discloses a carbon fiber plate anchorage device limiting tensioning block which comprises a block body. A square through hole for a carbon fiber plate to penetrate through is formed in the block body, a curved surface concaved inwards is formed in the face, making contact with an anchorage device, of the block body, and a limiting groove communicated with the square through hole is formed in the center of the curved surface. According to the carbon fiber plate anchorage device limiting tensioning block of the structure, in the process that a carbon fiber plate is stretched, shear stress in the thickness direction of the carbon fiber plate can be avoided, stress concentration of the tensioning block can be reduced, and therefore the service life of the tensioning block is prolonged.

A method and a surface evenness measuring roller for determining surface evenness measurement errors in steel and metal band comprising at least one measuring head having part measuring heads which part measuring heads are integrated respectively offset by 180° into the roller mantel and supported on two force transmitters and are further separated from the roller mantle by means of a circumferential motion gap and are braced with respect to one another by means of at least one tie rod wherein in the course of a measurement of the band tensile stress distribution over the whole band width the band with band is subject to tension over its whole band width wraps around the surface evenness measuring roller with a predetermined arc of contact and thereby exerts pressing forces onto the surface evenness measuring roller from which pressing forces can be determined the band tension distribution.

The invention provides an electrical equipment box, comprising a box body plate and side plates, wherein the box body plate is connected with the side plates, T-shaped chutes for mounting bolts are formed in inner surfaces of the box body plate and the side plates, the T-shaped chutes comprise first rectangular grooves and second rectangular grooves, the first rectangular grooves and the second rectangular grooves are formed in a penetration manner, the first rectangular grooves and the second rectangular grooves are formed in the surfaces of the box body plate and the side plates, and the widths of the first rectangular grooves are less than the widths of the second rectangular grooves. According to the electrical equipment box provided by the invention, by forming the T-shaped chutes formounting bolts in the inner surfaces of the box body plate and the side plates, the opposite edges of the bolts can be firmly clamped, the traditional double-faced mounting operation form of bolts and nuts is changed into single-faced operation, so that the installation is convenient and fast.

The invention provides a high-overload solid rocket engine and a charge design method thereof.The high-overload solid rocket engine comprises a combustion chamber shell, an end socket arranged at one end of the combustion chamber shell and a spray pipe assembly arranged at the other end of the combustion chamber shell, the combustion chamber shell is filled with grains and a buffer pad, the buffer pad is provided with a through hole for ignition, and the through hole is communicated with the end socket. The hole diameter of the through hole is larger than that of a hole, communicated with the grain, of the spray pipe assembly, and the side, close to the spray pipe assembly, of the grain is concaved inwards to form a curved surface. The method has the effects that the probability of ignition failure in the prior art can be relatively reduced, and the problem that the structural integrity of the grain is damaged under the overload working condition can be relatively solved.

The embodiment of the invention discloses a rotating device and a blood pump, and the rotating device comprises a first housing which is provided with a first accommodating cavity; the rotating assembly is arranged in the first containing cavity and can rotate in the first containing cavity; the rotating assembly comprises a first body and a first blade; a first through groove is formed in the first body; the first blade is fixed on the inner wall of the first through groove; the guide assembly is arranged in the first accommodating cavity; under the condition that the rotating assembly rotates, the first blade is used for pushing blood to flow in the first direction and rotate in the second direction; the guide assembly is used for rotating the blood in a third direction. According to the blood pump, due to the fact that the first blade is directly fixed to the inner wall of the through groove, shear stress is prevented from being generated between the first blade and the inner wall of the through groove, blood cell damage caused by gaps between the blades and the inner wall of the through groove can be prevented, and hemolytic reaction is prevented; the tendency that the first blade enables the blood to rotate in the second direction can be reduced through the guide assembly.