103results about How to "No fatigue damage" patented technology

The invention relates to an inorganic thermal insulation and decoration mortar, which is characterized by comprising the following components in parts by weight: 180-220 parts of cement, 40-60 parts of flyash, 560-600 parts of sand, 50-70 parts of heavy calcium carbonate powder, 70-100 parts of inorganic lightweight aggregate, 3-9 parts of bentonite, 4-8 parts of wood fiber, 2-7 parts of moisture repellent, 2-5 parts of saltpetering inhibitor, 0.5-4 parts of cellulose ether, 6-15 parts of rubber powder and 1-30 parts of pigment. The preparation method is implemented as follows: evenly mixing the cement, flyash, sand, heavy calcium carbonate powder, bentonite, wood fiber, moisture repellent, saltpetering inhibitor, cellulose ether, rubber powder and pigment, adding the inorganic lightweight aggregate, and carrying out mechanical mixing uniformity to obtain the product in the invention. The mortar in the invention has the advantages of thermal insulation, strong hydrophobicity, fire resistance, environment protection, no pollution, same duration with buildings and the like.

The invention discloses a quick and automatic assembling device for the sealing ring of a valve element housing. The quick and automatic assembling device comprises a machine frame, a sealing ring material supplying module, a valve body material supplying module, a valve body material moving module and a sealing ring assembling module, wherein the valve body material moving module and the sealing ring assembling module are arranged on the machine frame, and the sealing ring material supplying module and the valve body material supplying module are arranged on one side of the machine frame; the sealing ring material supplying module is used for achieving automatic and ordered loading of the sealing ring; the valve body material supplying module is used for achieving automatic and ordered loading of a valve body; the valve body material moving module is used for sending a to-be-assembled valve body to an assembling work station, and positioning the to-be-assembled valve body to achieve ring sleeving in an assisting way; and the sealing ring assembling module integrates actions of ring supporting, sleeving and stripping into a whole. The quick and automatic assembling device integrates actions of ring supporting, sleeving and stripping in one mechanism for accomplishment, has the characteristics of simple and compact structure, ingenious implementation way, reliable running, zero fatigue damage to the sealing ring, and the like, and greatly improves the assembling efficiency.

The invention discloses a microwave induction control method and a microwave induction control device and relates to the technical field of application of microwave sensors. According to the method, an action system for judging whether persons enter or leave the scene or not is established by using the Doppler effect through the microwave induction control device; a switch of a power supply of an electrical appliance is controlled by identifying the action that human bodies enter or leave the scene; the microwave induction control device adopted by the method can be arranged inside the electrical appliance, so that the electrical appliance adopts a closed structure, and moisture resistance and electric shock prevention can be realized. In addition, according to the method, the action whether the human bodies leave or not can be identified, and the power supply of the electrical appliance is automatically closed when the human bodies leave the detection range and no person exist in the detection range. Besides, the device is low in power consumption; when the device is installed on the electrical appliance for use, the standby power consumption of the electrical appliance can be greatly reduced, and further the aims of saving energy and electricity are achieved.

The invention relates to heat-preserving decorative mortar which comprises the following components in parts by weight: 180-220 parts of cement, 30-70 parts of fly ash, 560-600 parts of sand, 70-100 parts of heavy calcium carbonate, 30-60 parts of heat-preserving aggregate, 3-9 parts of bentonite, 4-8 parts of wood fiber, 2-7 parts of water repellent, 2-5 parts of alkalization inhibitor, 0.5-4 parts of cellulose ether, 6-15 parts of rubber powder and 1-30 parts of pigment. A preparation method thereof comprises the following steps of: firstly uniformly mixing the cement, the fly ash, the sand, the heavy calcium carbonate, the bentonite, the wood fiber, the water repellent, the alkalization inhibitor, the cellulose ether, the rubber powder and the pigment, subsequently adding the heat-preserving aggregate, and then mechanically and uniformly mixing to prepare the heat-preserving decorative mortar. The invention has the advantages of heat preservation, heat insulation, strong hydrophobic property, environmental protection, no pollution, and the like.

The invention discloses an all-shearing type magneto-rheological damper. The all-shearing type magneto-rheological damper is characterized by comprising an outer cylinder, an inner cylinder and a ball screw pair, wherein the inner cylinder is coaxially arranged with the outer cylinder, shearing discs are fixed by the ball screw pair, the inner wall of the inner cylinder is provided with electromagnetic coils and sharing ring sets corresponding to the shearing discs one by one, magneto-rheological liquid is filled in a cavity of the inner cylinder, at least one electromagnetic coil is arranged between adjacent shearing rings fixed on the inner wall of the inner cylinder, and the shearing discs, the shearing rings and the inner cylinder form a closed flux loop. On the premise of keeping same external size and energy consumption of a magneto-rheological damper, null-field viscous damping of the magneto-rheological damper is reduced, controllable damping ratio range is enlarged, and the all-shearing type magneto-rheological damper is added with potential for application to a high-speed impact/vibration control system. Besides, service efficiency of the magneto-rheological liquid in the magneto-rheological damper is improved, and cost of the magneto-rheological damper is effectively reduced.

The invention discloses a clothes hanger station arriving and leaving conveying system, and solves the problems that a conveying chain in the conventional flexible clothes hanger station arriving and leaving conveying system has a complex structure and is inconvenient to produce and assemble and low in using stability. The technical scheme is that: the clothes hanger station arriving and leaving conveying system comprises a station arriving guide rail, a station leaving guide rail, a conveying chain and a plurality of driving wheels, wherein the conveying chain is lapped with the driving wheels and comprises a plurality of chain plates. The system is characterized in that: the head of each chain plate is hinged with the tail of an adjacent chain plate; a hinge point of each chain plate inclines to the inner side of the conveying chain; the head of each chain plate is provided with a hook interface on the outer side of the hinge point on each chain plate; the conveying chain is provided with a descending part for driving a clothes hanger to descend and an ascending part for driving the clothes hanger to ascend; hook interfaces on the descending part and the ascending part on the conveying chain are in a closed state; hook interfaces on the conveying chain, which are positioned at the driving wheels, are in an open state; and the station arriving guide rail and the station leaving guide rail are close to one driving wheel respectively.

The invention discloses an energy feedback type self-sensing magnetorheological damper. The energy feedback type self-sensing magnetorheological damper is characterized by comprising a pure shearing type magnetorheological damper body, an energy feedback mechanism used for converting mechanical energy into electric energy, and a rotating speed sensor, the pure shearing type magnetorheological damper body converts linear movement of a linear magnetorheological damper piston rod into rotational movement by means of a ball screw pair mechanism, the shearing mode which is one of the working modes of magnetorheological liquid is effectively utilized, and stepless damping force controllability of the magnetorheological damper is achieved by arranging a shearing disc, a shearing ring and a corresponding electromagnetic coil. According to the energy feedback type self-sensing magnetorheological damper, by means of the shearing mode of the magnetorheological liquid, the range of dynamic damping ratios is effectively widened, and a more effective control range is provided for a high-speed impact and low-speed vibration control system; both the electric energy feedback performance and movement state self-sensing performance are realized, energy supply of a semi-active magnetorheological damper and the control system of the semi-active magnetorheological damper is achieved, and the problems, related to installation space, system weight, cost and reliability, caused by additional installation of a state feedback sensor are solved.

The invention discloses an automobile shock-reducing rubber spring and a preparation process thereof, and relates to the technical field of production of automobile rubber. The automobile shock-reducing rubber spring comprises the following components in parts by weight: 100Phr of natural rubber, 3-7Phr of zinc oxide, 0.5-3.5Phr of an anti-aging agent RD, 2-5Phr of an anti-aging agent 4010NA, 1-3Phr of a dispersant, 1-3Phr of stearic acid, 35-50Phr of carbon black, 2-5Phr of an accelerant, 7-13Phr of paraffin, 4-9Phr of aromatic hydrocarbon oil, 1-3Phr of sulfur S8 and 2-5Phr of a coupling agent. The invention also discloses a preparation process of the automobile shock-reducing rubber spring, and the preparation process comprises twelve process steps of plastifying, standing, mixing, slice discharging, strip cutting, metal frame treatment, surface treatment, rubber cement spraying, vulcanization, trimming, checking and warehousing. The rubber spring produced by the method disclosed by the invention is excellent in mechanical property, good in fatigue resistance and shock-reducing property, wide in material source and low in preparation cost.

The invention discloses a manufacturing process of a composite cylinder sleeve. In the process, a layer of 18-8 type Austenitic stainless steel is firstly clad on a working surface of a medium carbon quenched and tempered steel or alloy steel cylinder sleeve to be used as a bond coat by a laser cladding technology, and then a layer of 1Cr13 type Martensitic stainless steel is clad to be used as a wear-resistant corrosion-resistant surface layer to realize gradient compounding and strengthening, so the cylinder sleeve of a hydraulic transmission oil cylinder has longer service life and more balanced operation performance, and the problems of cylinder sleeve surface galling, hydraulic oil leakage and the like caused by the frequent reciprocating motion of a piston rod when the working surface of the cylinder sleeve lacks cooling lubricating oil or foreign matters enter the cylinder are avoided. The manufacturing process disclosed by the invention has strong technological parameter controllability, is convenient to operate, and brings convenience industrialized mass production.

The invention discloses a large-span bridge multi-order vortex vibration intelligent control system and method based on active air suction. When a detected wind speed reaches the wind speed at which vortex vibration is generated, the order of the generated vortex vibration is determined; a first air suction mechanism and a second air suction mechanism at corresponding positions of a windward sideare controlled to work according to the order of the vortex vibration; the first air suction device and the second air suction device begin to suck incoming wind; incoming wind is absorbed to form suction air flow on the windward side or a leeward side. Therefore, spanwise interference is formed in the spanwise direction of a box girder, the wind field on a bridge surface is interfered, and the formation of vortex shedding is avoided; and flow vortexes are formed at the upper edge, the lower edge and the lower web plate of a bridge, so that the spanwise correlation of wake vortexes is destroyed, the three-dimensional instability characteristic of wake flow in a vortex vibration process is excited, the vortex vibration response is weakened, the influence on the bridge is reduced, the fatigue damage of bridge components is avoided, and the influence on comfort is avoided.

The invention belongs to the technical field of computers and particularly relates to the ruggedized computer case. The ruggedized computer case is characterized in that two sides of a printed board are connected with a wedge-shaped locking device, the wedge-shaped locking device is fixedly connected with a case body through a guide groove formed in the case body and comprises a wedge-shaped block, a left moving slide block, a right moving slide block, a locking screw and a guiding groove plate, the locking screw is sleeved with the guiding groove plate, the right moving slide block and the wedge-shaped block respectively, the left moving slide block and the right moving slide block are connected with the surface of the wedge-shaped block and can slide along the surface of the wedge-shaped block, the wedge-shaped block is fixedly connected with the guiding groove plate, and the guiding groove plate is matched with a guiding groove. The ruggedized computer case has the advantages that the case can be resistant to long-term vibration and impact and can ensure that electronic devices are not fatigue and are not damaged, and the service life is prolonged.

The invention relates to a magnetostrictive following turning mechanism. The magnetostrictive following turning mechanism comprises a spherical base, a leftward-rightward magnetostrictive rod, an upward-downward magnetostrictive rod and a xenon lamp lens assembly; the leftward-rightward magnetostrictive rod and the upward-downward magnetostrictive rod are respectively arranged at the lower part and the upper part of a xenon lamp lens assembly frame; a spherical support is arranged at the lower part of a lamp bowl of the xenon lamp lens assembly; a spherical head is arranged at the lower part of the spherical support and can rotate in the spherical base; the leftward-rightward magnetostrictive rod is driven to be stretched or contracted through an electromagnetic module so as to drive the xenon lamp lens assembly to move leftwards and rightwards; and the upward-downward magnetostrictive rod is driven to be stretched or contracted through the electromagnetic module, so as to drive the xenon lamp lens assembly to move upwards and downwards. According to the magnetostrictive following turning mechanism, a lamp can be 'upwards and downwards' and 'leftwards and rightwards' adjusted based on the magnetostrictive principle according to the characteristic that the degree of freedom in the spherical contact movement direction is high; the magnetostrictive rod can be relatively sensitive, stable and reliable in transmission; and the following turning mechanism has a good application prospect in vehicles, and is worthy to being greatly popularized and applied.

The artificial carbon humeral prosthesis consists of carbon humeral ball and carbon humeral handle, the humeral ball has fixing slot in its bottom and the humeral handle comprises fixing column and humeral handle rod. The fixing column is embedded into the fixing slot, and the axis of the humeral ball joint surface and the axis of the humeral handle rod form one angle of 135-145 deg. The humeral carbon ball of the present invention has high mechanical strength and high chemical stability, no cell toxicity, no irritability, no genetic toxicity, good biocompatibility, elastic modulus near that of bone, osteoplastic activity and lubricating property. The humeral handle has high mechanical strength, high corrosion resistance and good biocompatibility. The present invention is suitable for use in case of replacing humerus.

The invention provides a C-shaped independent liquid tank in a liquefied gas ship. The C-shaped independent liquid tank comprises two cylindrical liquid tank bodies which are arranged side by side and fixed together; domes are arranged on the top surfaces of the two liquid tank bodies correspondingly; material openings are formed in the domes correspondingly; deep well pumps extending into the liquid tank bodies are arranged on the material openings correspondingly; fixed supporting seats and sliding supporting seats which correspond in position are arranged on the bottom surfaces of the two liquid tank bodies correspondingly; the fixed supporting seats and the sliding supporting seats are all of circular arc-shaped structures arranged in the width directions of the liquid tank bodies; a plurality of floating stopping devices are arranged at the tops of the two liquid tank bodies correspondingly; laminated wood is arranged at the bottoms of the fixed supporting seats and sliding supporting seats correspondingly; and liquid accumulation grooves are formed in the inner bottom faces of the two liquid tank bodies correspondingly. The C-shaped independent liquid tank is reasonable in structure, safety and reliability of the position relationship between a tank body structure of the liquid tank and a hull can be guaranteed, loads are effectively transmitted, and all kinds of stress strain and fatigue damage of the liquid tank and a hull structure do not occur, so that the ship can safely conduct transportation.

The invention relates to roll-welded pipe spiral electroplating equipment and an electroplating method thereof. In the roll-welded pipe spiral electroplating equipment, a roller is arranged in an electroplating tank, so that blank roll-welded pipes can be wound on the roller spirally to perform rolling electroplating. The roll-welded pipes are wound on the roller spirally to fulfill the aim that more blank roll-welded pipes are put into the electroplating tank with the same volume and are electroplated continuously, and the floor space of the electroplating equipment is reduced, and the cost of the equipment is saved while the electroplating efficiency is improved.

The invention provides a valve, which solves the leakage problem caused by the invalidation of the sealing of a rubber film in the prior art. The technical scheme is as follows. The valve comprises a valve body and a valve shell. The valve body is provided with a switching orifice and a large looping. The large lopping of the valve body adopts fixed non-rubber sealing which is a nut connected with the large looping of the valve body through threads. The upper part of the nut is connected with a sleeve in a sealing manner. The nut and the sleeve are metal material or nonmetal hard material, which do not attract magnet. The invention adopts the metal material or nonmetal hard material sealing, abandons the conventional rubber film sealing and avoids the gas leakage phenomenon caused by the invalidation of the rubber film after long-period use. Because of the fixed connection, damage caused by frequent movement does not exist. The sealing is reliable.

A closed-type petroleum and petrochemical flare horizontal pipeline deformation compensation system based on a rotary compensator is characterized in that it includes at least one closed rotary compensator installed on the flare horizontal pipeline, and the closed rotary compensator consists of four rotary compensators The compensator (3) is composed of two vertically installed tee pipes (2), the upper connecting pipe (4) and the lower connecting pipe (5). The corresponding ports of the horizontal torch pipe (1) of the same straight line are connected, and the two vertical nozzles of each three-way pipe (2) are respectively connected with a rotary compensator (3), and the upper ends of the two three-way pipes (2) The rotary compensator (3) is connected through the upper connecting pipe (4) to form a pipeline for the circulation of the gaseous medium, and the rotary compensator (3) located at the lower end of the two tee pipes (2) is connected through the lower connecting pipe (5) to form a pipeline for the circulation of the gaseous medium. Pipelines for the flow of liquid media. The invention has the advantages of long compensation distance, small investment, safety and reliability.

The invention provides a preparation method of silicon nitride ceramic with a high thermal conductivity. The preparation method comprises the following steps that (1) 70-80 parts of silicon nitride, 5-10 parts of rare earth oxide and 2-6 parts of a sintering aid are weighed in parts by weight, evenly mixed, and then added into a ball mill to form mixed powder, then continuous drying is conducted in a vacuum electric heating drying oven at the temperature of 110 to 120 DEG C, the completely-dried mixed powder is sieved in hydrogen airflow under a temperature condition of minus 20 to 0 DEG C to obtain composite powder; and (2) the composite powder obtained in the step (1) is packaged into a graphite die of a discharge plasma sintering device, discharge plasma sintering is conducted after vacuumization is conducted with a heating speed being 10 to 15 K/s, a heating temperature being 1450 to 1700 DEG C and a thermal insulation time being 3-8 min, and then the compact silicon nitride ceramic is obtained, wherein the sintering aid is a mixture of aluminum oxide, manganese oxide and boric oxide. By adoption of the preparation method, silicon nitride crystalline grains can be purified, and the thermal conductivity can be increased.

The invention discloses an outer wetback device of an oil and gas burning steam water boiler. The outer wetback device comprises a smoke chamber. The smoke chamber is enclosed by an outer wetback tube plate, side wetback plates and an inner wetback plate, the outer wetback tube plate is positioned on the front surface of the smoke chamber, the side wetback plates are positioned on two side surfaces and the lower surface of the smoke chamber, the inner wetback plate is positioned on the rear surface and the upper surface of the smoke chamber, an outer wetback plate is further arranged on an outer layer of the inner wetback plate, a cavity is enclosed by the outer wetback plate and a shell of the boiler, the smoke chamber is accommodated in the cavity, an internal space of the smoke chamber is communicated with a first return boiler furnace of the boiler and a second return smoke tube, and a cavity space on the outside of the smoke chamber is filled with to-be-heated water in the boiler. The outer wetback device has the advantages that fuel consumption can be reduced, the heat efficiency of the boiler can be improved, the running cost can be lowered, and the service life of the boiler can be greatly prolonged.

The invention discloses a laser cladding reinforcing process of a motor central spindle. In the reinforcing process, a layer of 18-8 type austenitic stainless steel serving as a base coat is cladded by laser cladding technology at the bearing position of the central spindle, and then a layer of 1Cr13 type martensite stainless steel serving as a wear-resistant and corrosion-resistant surface layeris cladded, so that stepped reinforcement is realized, the service life of the motor central spindle is prolonged, operating performance is balanced, and using problems such as corrosion of the central spindle at the bearing position, shaft deviation caused by wear, roughing of a bush and the like are solved. In the process, parameter controllability is high, machining operation is convenient andindustrial batch production is convenient.