56results about How to "Small additional weight" patented technology

An elevator installation has braking equipment for braking and holding an elevator car which moves in vertical direction within guide tracks or rails. The braking equipment consists of at least two brake units each comprising a normal force regulation device that sets a normal force (F_N) in correspondence with a normal force value determined by a brake control unit and/or a locking device that locks the brake unit in a set braking position and which preferably maintains the set braking position in the case of an interrupted energy supply. The braking equipment provides a gentle braking or holding of the elevator car, which corresponds with the operational state of the elevator installation, with a low energy requirement.

The invention relates to an anti-sway jacklift, comprising a small frame and a lifting driving device. The jacklift is characterized in that a power shaft of the lifting driving device is connected with a transmission shaft and intersects with the axis of the transmission shaft; at least two lifting chain wheels are arranged on the power shaft and the transmission shaft respectively; the small frame is also provided with chain supports; one end of each chain is connected with the chain supports and the other end thereof is connected with the lifting chain wheels; a hanger plate is provided with at least four hanger plate chain wheels; and the hanger plate chain wheels are connected with the chains. The jacklift has the following advantages: the jacklift adopts combination of the chains and the chain wheels to replace the original combination of telescopic columns and the drum-type lifting device, integrates the anti-sway function and the lifting function, can substantially reduce the components with larger volume and the amount of machining in the process of equipment manufacturing and simultaneously can reduce the weight of the equipment self, save the raw materials, reduce the added weight during lifting and save energy.

A method for anti-buckling and reinforcing by a fiber-reinforced composite belongs to the technical field of metal component anti buckling and reinforcing and is characterized in that the method comprises the following three different and independent reinforcing methods of: filling solid light materials, fiber-reinforced composite profiles and wrapping fiber cloth for reinforcement; filling the solid light material; subsequently wrapping the fiber cloth for reinforcement; fully sheathing the fiber-reinforced composite sleeve on the reinforced steel component and filling the solid light material subsequently; and reinforcing the component by wrapping the fiber cloth. The reinforcing method is flexible, convenient, fast and safe, has small effects on the structure, has light additional weight, obviously improves the bearing capability, and can be combined with other reinforcing types.

The invention discloses a blood passive control suspension bearing applied to an implantable centrifugal blood pump, which is a novel blood pump supporting device, wherein annular permanent magnet steel is arranged on a rotor, an electromagnetic coil is fixed on a stator, the top and the bottom of the stator are provided with spiral grooves, an inner ring of the stator is provided with an arc-shaped groove, the upper top surface of the rotor is provided with an impeller which is arranged in a pump shell, and the pump shell is connected with the stator and a base into an integral body; and blood flows in from the inlet of the pump shell, most of the blood flows out from the outlet of the pump shell through the rotation of the impeller, and a small amount of the blood passes through a circular hole in the center of the rotor, a gap between the lower surface of the rotor and the base, the spiral groove at the bottom of the stator, a gap between the rotor and the stator and the spiral groove on the top of the stator which form a secondary flow passage, and then converges with the blood at the outlet. The blood passive control suspension bearing has a simple structure, can ensure less bearing wear, small heat productivity and small power consumption, and is advantageous for the blood pump to be developed towards a light and portable direction.

The invention provides a wheelchair horizontality regulating mechanism. The regulating mechanism comprises a gravity center wheel, two crank arm push rods, two connecting lines, and a support shaft, wherein the gravity center wheel and the support shaft are in cross connection, and the gravity center wheel is connected with the two crank arm push rods through the connecting lines. In the regulating mechanism, the gravity center wheel regulation mechanism is used to always keep the stretch force for the vertically downward gravity center when the wheelchair climbs or gets down the stairs; the mobile and stretchable crank arm push rods at the head part allow the front part or the rear part of the seat to be lifted to regulate the horizontality of the wheelchair; and the horizontality regulation of the seat and the stair climbing and getting downstairs of the wheelchair are synchronous, and the regulation amplitude is in proportion to the wheelchair inclination. The invention adopts simple mechanical parts to realize automatic regulation, no additional power is needed for driving, no manual intervention control is needed, and the advantages of low cost, simple structure, and easiness in realization, are achieved.

The invention discloses a suspension permanent magnetic blood pump. The invention is characterized in that a cavity of the interior of an upper pump cover consists of a perfect circular truncated cone and an upper volute runner cavity, the conical surface of the perfect circular truncated cone is embedded with a suspension permanent magnetic ring, a cavity of the interior of a lower pump cover consists of an inverted circular truncated cone and a lower volute runner cavity, the conical surface of the inverted circular truncated cone is embedded with a suspension permanent magnetic ring, a cylinder-shaped bulge of the middle of the lower pump cover is internally embedded with a magnet coil, a rotor consists of a ring fixed mount and dentation-shaped blades, wherein the perfect conical face section and the inverted conical face section of the external surface of each detation-shaped blade are respectively embedded with a suspension permanent magnetic sheet, and the cylindrical section face of the internal surface of each detation-shaped blade is respectively embedded with a driving permanent magnetic sheet. When in use, blood enters from a pump inlet, passes through the runner between the rotors through the runners between the blades, and flow towards a pump outlet along the volute runners between the upper pump cover and the lower pump cover. The invention can ensure that blood in small gap in the blood pump is timely updated and that the blood pump has less wear, small heat productivity and small power consumption.

The invention relates to a checkweigher for weighing a slide way. The checkweigher comprises a third support frame and a fourth support frame, wherein a weighing sensor is arranged on the third support frame, and a weighed slide way which is obliquely placed is arranged on the weighing sensor; an eliminating platform and an eliminating and grading mechanism are arranged on the fourth support frame; the eliminating platform is arranged below a discharge outlet of the weighed slide way; and the weighed slide way is in rigid connection with the stressed end of the weighing sensor through a force guide rod, an included angle between the design stressed direction of the weighing sensor and the material sliding direction of the weighed slide way is B, and B is more than 0 degree and less than 90 degrees or B is more than 90 degrees and less than 180 degrees. The back end of the weighed slide way and the front end of the eliminating platform are opposite with a spacing interval and are not in contact, and the weighed slide way is higher than the front end of the eliminating platform, so that the checkweigher solves the problems that a rotating motion part in a weighing and metering unit of an existing separating and checking scale seriously affects weighing precision, economy, practicality and efficiency, as well as the problems that an eliminating and grading device affects the weighing precision and the manufacturing, debugging and maintenance cost.

The invention discloses a mixed type passive suspended centrifugal blood pump. A shell cavity body consists of a positively cylindrical cavity and an inversely cylindrical cavity, wherein the positively cylindrical conical surface is embedded with a suspended permanently magnetic ring, and the inversely cylindrical conical surface is embedded with an electromagnetic coil; an inverse cone-shaped circular ring at the lower end of a rotor is embedded with a driving permanently magnetic ring, an upper part and a lower part of an outer surface of the inverse cone-shaped circular ring are provided with a spiral flow guiding groove respectively, and an inner surface of the inverse cone-shaped circular ring is provided with two inverse cone-shaped spiral guiding blades at equal intervals along the circumferential direction; and the upper end of the rotor is provided with cone-shaped circular ring segments at equal intervals along the circumferential direction, and each cone-shaped circular ring segment is embedded with a suspended permanently magnetic plate. When the blood pump works, the blood flows in from an entrance, and flows to an exit through the spiral guiding blades and the central holes of the spiral guiding blades, and a small part of blood at the exist flows through a gap between the rotor and the inner surface of the shell and the space between the cone-shaped circular ring segments and joins the blood at the entrance under the action of the pressure difference between the entrance and the exit and the upward spiral flow guiding groove and the down ward spiral flow guiding groove on the outer surface of the rotor. The blood pump has the advantages of less abrasion, less heat production and lower energy consumption.

An impact-resisting damping device with multi-freedom-degree high-damping viscoelastic damping semi-spheres is characterized in that the damping device is a sealed hexahedron device combined by a damping base, two damping cavity lateral covers, a damping cavity front cover and a damping cavity upper cover. A mechanical structural component inner cavity is formed in the vibration damper. The damping semi-spheres are attached to the entire inner wall of the mechanical structural component inner cavity. A damping cavity for mounting damping parts is formed in vibration damper. The damping base comprises a front positioning seat, a damping cavity base plate and a damping cavity rear plate. Each semi-sphere is made of high-viscoelasticity, high-damping and multi-freedom-degree polyether urethane materials. By the damping device, normal operation of highly-sensitive equipment under vibration and impact can be guaranteed.

The invention relates to a method for hoisting a full-width total section of a thin-walled structure. The method includes the following steps of firstly, calculating the weight and center of gravity of the full-width total section of the thin-walled structure, determining the number of hoisting points, and selecting the positions of the hoisting points; secondly, analyzing and calculating the stress conditions of each hoisting point, selecting slings and locks which meet the hoisting specifications, calculating the hoisting girth length of the full-width section of the thin-walled structure and the hoisting height of a crane, and calculating the required sling length; thirdly, manufacturing and installing a corner protector and a tongue and groove protector according to the line-type chamfered form of the full-width section of the thin-walled structure; and fourthly, making the slings selected in second step penetrate through the corner protector and the tongue and groove protector onthe two sides of the full-width total section of the thin-walled structure at the same time, and hanging the slings on hoisting rows or hoisting hooks of a hoisting device for hoisting operations. Byadopting the method, the distribution area of stress points of the hoisting points is large, the structural deformation caused by the hoisting of the total section is effectively controlled, and a large number of structural strengthening devices are omitted.

The invention relates to a recoil press of a crane in the form of a gas cylinder, wherein, a piston rod engaged in a cylinder chamber of the gas cylinder is configured as a piston accumulator, and wherein the gas in the bottom space of the cylinder is communicated with the gas in the piston rod and the annular space surrounding the piston rod. A sealing arrangement in a rod guide of the cylinder seals the piston rod off from the cylinder. The sealing arrangement comprises a lubricant groove extending around the rod guide via which groove the exterior of the piston rod is lubricated. The lubricant is under the gas pressure prevailing in the cylinder with a pressure transmitting element being interposed.

The invention discloses a bionics-based pneumatic resistance reducing device. The device comprises a grid structure and blades attached to the grid structure, the grid structure and the blades are allmade from flexible materials, each grid of the grid structure is internally and movably provided with a corresponding blade, and the sizes of the blades are adapted to the sizes of the grids. Each blade can separately deform and vibrate, the pneumatic shape can be adaptively changed under the action of different winds to reduce the wind resistance under various conditions, and the blades are allowed to vibrate, thereby being capable of reducing energy consumption while reducing resistance, and further reducing wind-induced vibration of bridge structures.

The invention discloses a structure for suppressing cavity resonance in automobile tire based on phononic crystal noise reduction theory, which is characterized in that the structure comprises a longrectangular rubber or plastic base band, and rubber cylinders are arranged on one side of the base band in a rectangular array. Wherein the rubber base belt and the rubber cylinder are manufactured asa whole. At that time of installation, the tire is fixedly connecte in the deep groove of the wheel rim, restrained by a restraining belt, the tire is load into one side of the tire lip, the restraining belt is cut out, and then the tire lip is loaded into the other side of the tire lip; To remove the tire, remove one lip, restrain the rubber cylinder with the restraining strap, and then remove the other lip. Compared with adding common sound-absorbing material, it is not easy to damage in tire loading and unloading. By optimizing the parameters and layout, the additional weight can be reduced, and the cavity resonance noise of tire in the range of 200-300Hz can be effectively suppressed. In order to ensure the dynamic balance, the layout of the rubber cylinder on the base belt should satisfy the symmetry of the structure and ensure that the rubber cylinder is symmetrical about the center of the wheel center after it is installed in the deep groove of the wheel rim.

The invention discloses an air guide device and a manufacturing and assembling method of the air guide device. The air guide device comprises at least one air guide section, each air guide section comprises an air guide section body composed of a top plate and a bottom plate, reinforcement ribs are arranged inside the air guide section bodies, and each of the top plates, the bottom plates and the reinforcement ribs is made of a fiber reinforcement composite material inner layer and a fiber reinforcement composite material outer layer. The manufacturing and assembling method includes the steps that (1), the fiber reinforcement composite material inner layers, the fiber reinforcement composite material outer layers and light sandwich layers are manufactured and used for forming the top plate, the bottom plate and the reinforcement rib, so that one air guide section is formed; (2), the preset number of air guide sections are manufactured and connected with a main beam of a bridge through bolts, and the air guide sections are connected through bolts. The air guide device has the advantages of being light, high in strength and corrosion performance and easy to connect with the main beam, and the manufacturing and assembling method is simple and convenient to implement.