317results about How to "Improve load resistance" patented technology

Invention provides a self latching, object-holding fixture designed to release a held object whenever the object is turned slightly in either direction. Fixture has a shaped housing and the object to be held has a mated opening of a similar matching shape. Placing an object to be held locks the object to the fixture by spring-loaded latching action. The fixture housing covers a fixed spring holding base that is anchored by any suitable means to a support surface. Covering that fixed-position base, except for exposed spring-loaded keeper latches, is a rotatable casing having a pair of spring compression cam surfaces carried by the casing. Using a cam follower action, these cam surfaces selectively cause the spring to collapse in response to the rotation of the casing holding in either direction of casing rotation. As the object/casing is turned slightly, this cam follower/spring collapse action releasably disengages the keepers from the object being held.

A vacuum cleaning tool for a vacuum cleaning device has a housing with a working chamber that has a bottom plate provided with a suction slot extending transversely to a working direction of the vacuum cleaning tool. The housing has a housing front wall facing in the working direction. The housing front wall has a receptacle, and an illumination element is arranged in the receptacle for illuminating a working surface of the vacuum cleaning tool. A light-permeable cover closes off the receptacle and covers the illumination element. The illumination element is a cold light lamp emitting cold light.

The refrigerating machine oil composition of the invention is characterized by containing a mixed base oil which has a kinematic viscosity at 40° C. of 0.11 to 8 mm²/s and which is composed of a low-viscosity base oil (A) having a kinematic viscosity at 40° C. of 5 mm²/s or lower, and a high-viscosity base oil (B) having a kinematic viscosity at 40° C. of 20 to 400 mm²/s, each of the base oil (A) and (B) being composed of at least one species selected from among a mineral oil, a synthetic hydrocarbon compound, an oxygen-containing compound, and a sulfur-containing compound. The refrigerating machine oil composition exhibits enhanced energy saving performance by virtue of its low viscosity, has excellent sealing performance and load resistance, and can be employed in various refrigeration means, particularly suitably in a closed-type refrigerator.

A structural system comprised of prefabricated deck units spaced along longitudinal load-carrying members, which produce longitudinal axial compression in deck units by tensioning the longitudinal load-carrying members without the use of standard post-tensioning details. During construction, prefabricated deck units are erected on top of and supported by the longitudinal load-carrying members via leveling devices, which also permit relative motion between the longitudinal load-carrying members and the prefabricated deck units. Jacking apparatuses are used to introduce deck compression by jacking against the longitudinal load-carrying members. This system can be used for new structures and for deck replacement of existing structures.

Provided is a polyamide resin composition which can provide an expanded molding being superior in heat resistance and sufficiently reduced in weight and having high load resistance by a simple molding process. The polyamide resin composition is characterized by comprising a polyamide resin (A), a glycidyl-group-containing styrene copolymer (B) having two or more glycidyl groups per molecule, a weight average molecular weight of 4000 to 25000 and an epoxy value of 400 to 2500 Eq/1×10⁶ g and an inorganic reinforcing material (C) in a proportion such that the content of the glycidyl-group-containing styrene copolymer (B) is 0.2 to 25 parts by mass and the content of the inorganic reinforcing material (C) is 0 to 350 parts by mass relative to 100 parts by mass of the polyamide resin (A).

The invention relates to a lubricating grease composition and a preparation method thereof, in particular to a composition of food-grade lubricating grease and a preparation method thereof. The composition comprises the following components in percentage by weight: 75-86 percent of base oil, 1.0-3.0 percent of benzoic acid, 3.5-6.5 percent of stearic acid, 3.5-7.0 percent of aluminum isopropoxide tripolymer, 0.5-1.5 percent of silicone oil, 1-5 percent of calcium carbonate, 0.2-1.0 percent of antioxidant and 0.5-2.0 percent of antirust agent. The lubricating grease composition has excellent high temperature resistance, water resistance and excellent anti-rust property, is greatly improved in water spray resistance and mechanical stability, and is simple in process and convenient for large-scale industrial production. The lubricating grease can meet the lubricating requirements of mechanical equipment used for meat processing, can processing, beverage processing and the like in the food industry, and is consistent with the safety and sanitation requirements of food-grade lubricants.

The invention relates to a packing container for roll articles, which can reliably fix and store roll articles during the carrying process. Meanwhile, the roll articles are simple to store and take out. The packing container (1) comprises a container body consisting of a bracket (2) and sidewalls (3) and used for storing roll articles (50) wound on a winding core; a pair of bearing members (4) with notches for holding the winding core wound with the roll articles and used for holding the roll articles in a suspended manner; a pair of pressing members (5) arranged along the upper parts of the bearing members (4); a pair of fixed columnar lower spacers arranged along the sidewall of the container body; a pair of columnar upper spacers arranged corresponding to the lower spacers; and a cover body (6) of the container body.

A gear mechanism having extremely less backlash, capable of suppressing the rattling noise of gears, having a large loading resistance in the thrust direction, and capable of transmitting high torque by using the gears transmitting a force by the meshing of the gears with each other in place of the transmission of the force by friction. The gear mechanism is formed by disposing the plurality of spur gears in the meshed state with each other. The screw-like gears (2) and (4) are disposed on the same axis as the spur gears (1) and (3) in the meshed state with each other. The screw-like gears (2) and (4) adjacent to each other are formed in screw shapes having lead angles extending in the reverse directions to each other and equal in angle to each other. The spur gear (1) and the screw-like gear (2) are rotated integrally with each other to transmit its rotation to the spur gear (3) and the screw-like gear (4) adjacent to each other.

A toothed belt is provided that has excellent environment resistance, high load resistance, high stiffness, and achieves high accuracy, light weight, compactness and low noise.

A toothed belt is provided with a belt body including a plurality of core wires juxtaposed in the width direction of a rubber portion, a plurality of tooth rubber portions formed on one surface of the belt body, and a tooth cloth covering the surface of the tooth rubber portions. The rubber portion contains dioctyl sebacate and trimellitic acid ester in a mass part ratio of 1:19 to 1:1, the mass percentage of the dioctyl sebacate to the whole quantity of the rubber portion is less than 4 mass %, and the mass percentage of the total quantity of the dioctyl sebacate and the trimellitic acid ester to the whole quantity of the rubber portion is in a range from 4 mass % to 8 mass %.

This invention relates to a method for purifying eutrophic water body by using water plant, particularly duck-weed and polycultured with other water plants. The adsorption, absorbing and biochemical reaction of said water plants are used for removing nitrogen, phosphorus and other pollutants. The plants occupies 70-90% of the surface of the water body. This invention has advantages of: simple operation, low management cost, obvious treatment effect, no secondary pollution, the water plants can be harvested as resource, being of a popularized treatment method for eutrophic water body.

In a method to seal/lock a strap (44) including a metal strap (44d) which is fitted at least in the zone of seal with a protective layer (44c), the packing strap is laid in the form of a loop around the package and is held, in particular, clamped, in place before and/or during production of the seal. The seal is implemented on the packing strap (44) by resistance welding and the protective layer (44c) of the packing strap (44) shall be pierced before and/or during production of the seal.

The invention discloses an optimization design method of blades of a horizontal-axis wind turbine based on the topology optimization of the structure, each blade comprises a web plate (3), spar caps (3, 5) and a coating (1), and the design method comprises the following steps: adopting the existing blade design method to determine an aerodynamic shape parameter and the structural parameters of the blades; adopting the topology optimization method to perform opening design on the web plates and the spar caps of the structure; determining the initial design positions, the number and the sizes of openings through optimization calculation; and checking the strength, the rigidity and the fatigue of the structure of the blades obtained by the topology optimization, and further performing structural adjustment according to the check result so as to ensure that the blades have good structural performances. Through the design method of arranging openings on the web plates and the spar caps, the strength, the rigidity and the anti-fatigue performance of the structure of the blades can be kept, the weight of the blades is simultaneously reduced, not only is the cost of the blades reduced, but also the reducing of the loads of the blades is benefited.

The invention provides high-temperature-resistant polytetrafluoroethylene lubricating grease for sealing. The lubricating grease is prepared from, by mass, 30-70% of base oil, 25-55% of thickener, 2-5% of structural stabilizer, 1-5% of tackifier and 1-5% of lubricant. The invention further provides a preparation method of the lubricating grease, polytetrafluoroethylene micro powder serves as the thickener to thicken silicone oil as the base oil, meanwhile a certain amount of the structural stabilizer, the tackifier and the lubricant are added at the same time, and then the lubricating grease is prepared through corresponding preparation processes. The prepared polytetrafluoroethylene lubricating grease has excellent high temperature resistance, good sealing performance, excellent lubricity, adhesion and oxidation resistance, high load, water spraying resistance and other properties, the lubricating grease has no suncrack, oil splitting and hardening phenomena at the high temperature more than 200 DEG C, and has good sealing property, adhesion property and high temperature resistance.

The invention discloses a linear driving device and a controlling and using method of the linear driving device for a solar tracker. The linear driving device comprises an outer tube and a sealing end cover arranged at the end portion of the outer tube. A screw is arranged in the outer tube, one end of the screw is connected with a drive mechanism, a transmission nut in threaded match with the screw is arranged on the screw, and a telescopic rod is arranged between the outer tube and the screw. One end of the telescopic rod is connected with the transmission nut, the other end of the telescopic rod penetrates through the sealing end cover, a sealing assembly is arranged between the telescopic rod and the sealing end cover, and a waterproof oil-proof vent plug is arranged on the outer tube. The linear driving device is mainly used on the solar tracker, corresponding structural design is performed on the aspects of deflection, load resistance and protection of the device according to the using environment of the solar tracker, and the linear driving device applied in the solar tracker is reliable and stable in operation and strong in deflection and load resistance and accordingly improves the tracking accuracy of the solar tracker effectively.

The invention discloses a giant magnetostrictive flap wind turbine blade vibration reduction system and a control method, belonging to the technical field of wind power generation. The invention adopts the technical scheme that the system comprises a giant magnetostrictive flap wind turbine blade, a wind speed measurement laser radar, an embedded vibration control card and an upper computer. The giant magnetostrictive flap wind turbine blade comprises three fiber optic strain sensors and three giant magnetostrictive actuators. The embedded vibration control card comprises an ARM (Advanced RISC Machines) main control chip, an FPGA (Field Programmable Gate Array) circuit, an A/D (Analog to Digital) converter, a first low pass filter, a signal conditioner, a voltage-controlled constant current source, a second low pass filter, a digital to analog converter and a USB (Universal Serial Bus) port. The giant magnetostrictive flap wind turbine blade vibration reduction system and the control method have the beneficial effects that vibration reduction of the wind turbine blade which is provided with flap structures is realized under small amplitude and low frequency, and the antijamming capability of the system is improved.

A torque meter enables highly accurate measurement of a torque by detecting only the torque, without being affected by various loads. The torque meter includes an elastic member placed in a power transmission channel and being deformed upon application with a torque being measured, and a means for detecting the torque based on the deformation of the elastic member. The torque member receives a torque being applied to the elastic member, and the load member is provided separately from the torque member, for supporting the load of the elastic member.

A hoisting and lowering driving engagement multi-row chain is disclosed, in which bending of the connecting pins in the chain is suppressed to avoid fatigue failure. Additionally, the load carrying balance in the chain width direction is improved, and contact vibrations and contact noises generated between the chain and the hoisting and lowering sprockets are suppressed. Endurance of the bush in the chain is thereby improved. Bending of connecting pins is avoided by press-fitting bushes, through which connecting pins pass, into intermediate tooth plates. This also improves load carrying balance widthwise. Contact noises and vibrations between the bushes and sprockets are suppressed by providing bushes with a separate sprocket engagement portion having a larger diameter than the press-fitting portion of the bushes.