91results about How to "Reduced risk of wear and tear" patented technology

A humeral prosthesis, for the articulation of a humerus in a scapula of a shoulder having a glenoid cavity, includes an articulation device able to be associated both with an articulation element mounted on the glenoid cavity, and also at the top of said humerus by an attachment element. The articulation device comprises a first element able to articulate with the articulation element and a second element associated with the attachment element, the first element and the second element being pivoted to each other around a pivoting axis to allow a free relative rotation thereof around the pivoting axis.

The invention provides a layering processing method and system of a three-dimensional object data, a 3D printing method and device, a computer device and a computer readable storage medium. Through using the characteristic that a material to be cured can display color appearance with the distinction degree after over-curing, a certain distinction degree such as color and structure sudden change (or the step) is needed in the appearance to recognize the object with the different portions carrying information, in the pretreatment, on the basis of the relations of dependence, the three-dimensional attachment model and the three-dimensional main model are mounted, and are subjected to layering processing, an over-curing property is arranged, in the subsequent printing process, on the basis ofthe obtained slicing data, at least one part is sliced to carry out over-curing with the set rule, in the printing process, different exposure strategies are adopted, in one-time printing, the three-dimensional object with recognized assembling information or configuration information is obtained, the production process is simplified, and the production cost is reduced.

A turbocharger, has a turbine for expanding a first medium and a compressor for compressing a second medium. The turbine includes a turbine housing and a turbine rotor. The compressor includes a compressor housing and a compressor rotor coupled to the turbine rotor via a shaft. A bearing housing is arranged between the compressor and turbine housings in which the shaft is mounted. The turbine and bearing housings are connected via a fastening device mounted on a flange of the turbine housing with a first section and a second section that covers a flange of the bearing housing at least in sections. The fastening device is contoured curved on a surface of the second section facing the flange of the bearing housing.

The invention provides a grinding wheel with an array-type region grinding function. The grinding wheel comprises a grinding wheel body. One or more sliding rigid or semirigid abrasive blocks are arranged on the circumference of the edge of the grinding wheel body. The abrasive blocks slide in the radial direction of the grinding wheel body. Through the structure, the grinding wheel with the array-type region grinding function can always maintain balanced grinding pressure on a ground region as a traditional grinding belt do. When the shaft array interval radian is small, and the telescopic travel of a polishing and grinding module is increased, the multiple abrasive blocks can simultaneously act within a certain region range, and the grinding balance is maintained in a large range. The working linear speed can reach hundreds of meters per second or over, rapid cooling can be achieved, and the service life is long.

The invention relates to an electrical contactor 1, particularly for use in railways, having a stator 2 and an armature 3, said armature 3 being connected to a contact region 4a, 4b and being movable from a first to a second position during a switch-on and/or a switch-off process of the contactor, wherein the contact region 4a, 4b is connected in at least one of said positions to a counter-contact region 5a, 5b for closing an electrical circuit, wherein a pushing device 6 is connected to the armature, which pushing device can be rotated relative to the armature 3, wherein the pushing device 6 pushes the armature 3, during the movement from the first to the second position of the switch-on and/or switch-off process at least at times in a supporting manner. The invention also relates to a method for switching on and/or off an electrical contactor 1, comprising the following steps: moving an armature 3 by activating and/or deactivating a stator; accelerating a rotation of a pushing device 6, said pushing device 6 being connected to the armature 3; and transferring at least a portion of the kinetic movement energy of the pushing device 3 to the armature 3, in a phase of the switch-on and/or switch-off process, in which a contact region 4a, 4b connected to the armature 3 comes into contact with and out of contact with a counter contact region 5a, 5b to support the armature movement.

The invention discloses a seven-gear hydrodynamic-transmission hydraulic system, and belongs to the technical field of hydraulic transmission. The seven-gear hydrodynamic-transmission hydraulic system comprises an oil supply way and a gear-shifting control system. The oil supply way comprises an oil-supply-pump oil filter, an oil supply pump, a safety valve, a main oil pressure regulating valve, a main-manner electromagnetic valve, a control pressure regulating valve and an oil filter. The gear-shifting control system comprises linkage valves, a plurality of normally-open electromagnetic valves, electromagnetic pressure regulating valves matched with the normally-open electromagnetic valves, a plurality of normally-closed electromagnetic valves and electromagnetic pressure regulating valves matched with the normally-closed electromagnetic valves. According to the technical scheme, the torque of a transmission is changed in a hydrodynamic-transmission and gear combined manner, the transmission ratio is changed accordingly, backing of a vehicle is achieved under the condition that the rotation direction of an engine is not changed, power transmission is interrupted when a gear is at the neutral position, starting and idling of the engine are convenient, gear shifting or power outputting of the transmission is convenient, and the structure of the transmission is more compact accordingly.

A method for producing a wear-resistant repair coating of a porous structure comprises the following steps: pretreating the surface of a base body, carrying out polishing treatment, washing the surface, washing the surface of the base body by using distilled water, and then, carrying out de-oiling treatment by using acetone to wipe for about five minutes; preparing an electrolyte by using 250-300g/L of cupric sulfate pentahydrate and 50g/L of concentrated sulfuric acid, wherein the temperature of the electrolyte is 25DEG C; setting technical parameters as follows: the aperture of a rectangular nozzle is 10*1mm, the aperture of a round nozzle is 1-3mm, and distances between the nozzles and the base body are 2-10mm; separately configuring current into the two forms of direct current and pulse, and controlling the two parameters on purpose; and scanning the number of layers, and setting the parameters of numerical control equipment.

The invention provides a guide bar arrangement (1) of a warp knitting machine with a bar (2), a plurality of guide needles (3) group-wise combined into needle segments (4), and a drive mechanism (12) for generating the offset movement of the guide needles (3). For this purpose, the needle segments (4) are movably connected with the bar (2) in the displacement direction (8) and the drive mechanism (12) acts on the needle segments (4).

The invention discloses a rapid hoisting connecting device for an efficient smelting converter and a using method of the rapid hoisting connecting device. The rapid hoisting connecting device for the efficient smelting converter comprises a hoisting carrying pole beam and connecting blocks, the connecting blocks are symmetrically arranged at the top of the hoisting carrying pole beam, and the tops of the connecting blocks are connected with a steel cable of an external crane. The rapid hoisting connecting device for the efficient smelting converter has the beneficial effects that quick connecting mechanisms are symmetrically arranged at the top of the hoisting carrying pole beam, and the connecting blocks matched with the quick connecting mechanisms are symmetrically arranged below the steel cable of the external crane, so that the effect of quickly connecting and disassembling the hoisting carrying pole beam is achieved, the mounting efficiency and safety in the actual use process are improved, the steel cable is not prone to falling off, the risk of hook abrasion is reduced, meanwhile, hanging mechanisms capable of being movably adjusted are arranged to be better matched with converters of different sizes for use, and the safety of converter hoisting is improved by adjusting the hanging position of the steel cable.

A liquid separating device for the separation of a liquid mixture that at least comprises two liquids with a different density and possibly one or more solid substances comprising a conduit for the separation therein of the liquids of a liquid mixture that flows through the conduit and a swirl device for generating swirls in the liquid mixture in such a way that two liquid flows are created where a first liquid flow will concentrate in the centre of the conduit and a second liquid flow will move concentrically around the first liquid flow and where the swirl device comprises a motor that is positioned outside the conduit, a swirling element that is positioned in the conduit and a drive shaft that connects the motor and the swirling element to each other characterized in that the swirl device can be removed and that an opening has been provided in a wall of the conduit for the swirling element to pass through.

The invention provides a folding display panel, which comprises a plane part, a folding part and a heat dissipation component, the plane part comprises a first plane part and a second plane part, the folding part comprises a fixing mechanism and rotating mechanisms rotationally connected with the fixing mechanism, and the rotating mechanisms comprise a first rotating mechanism and a second rotating mechanism. The first rotating mechanism is connected with the first plane part, the second rotating mechanism is connected with the second plane part, and the heat dissipation component is connected with at least one of the first rotating mechanism and the second rotating mechanism. According to the display panel, the heat dissipation component connected with the rotating mechanism is arranged, heat generated by the rotating mechanism can be taken away by the heat dissipation component in the folding process of the display panel, and therefore the problem that the contact face is abraded due to the fact that lubricating grease at the position is oxidized due to high temperature can be solved, and the risk of abrasion of the rotating mechanism is reduced.

The invention discloses a novel artificial bone material. The artificial bone material is a PMMA bone material in a double-component system; the double-component system consists of a powder componentand a liquid component; the weight ratio of the powder component to the liquid component is 1:(2.5 to 4.5). The invention also provides a preparation method and application of the artificial bone material. The artificial bone material with high compressive strength, low elasticity modulus and high biocompatibility is obtained. In the aspect of mechanical performance, the novel material combines the mechanical property of the human bone tissue compared with pure PMMA bone cement; the risk that the autogenous bone is worn is reduced; the damage due to extrusion when the prosthesis is implanted can also be effectively avoided. In the aspect of biocompatibility, the modified mineralized collagen composite material can form bone combination with the autogenous bone; the bone bonding and the stability of a filler in the implanted position are favorably improved, so that the use of the novel material is safer and more reliable.

The invention discloses a novel fire-fighting water monitor driven through servo motors. The novel fire-fighting water monitor driven through the servo motors comprises a pipe body, a monitor head connected to a water outlet end of a pipeline, an installation top plate used for installing the pipeline, a first adjustment mechanism used for driving the pipeline to carry out angle adjustment, and ashock-absorption installation mechanism used for installing the installation top plate on a wall body or a support, wherein the pipeline is fixedly arranged below the installation top plate through two groups of installation seats; each of the pipeline and the installation structure adopts a relatively-symmetrical structure, and the stability can be greatly improved in a running process of the fire-fighting water monitor; the pipeline is driven through two groups of the servo motors, and then enabled to carry out 360-degree adjustment in the horizontal direction and the vertical direction, sothat a wide adjustment range is achieved, and the two groups of servo motors are connected with drive gears through flexible shaft couplings, so that the risks of damage to the servo motors and wear on the drive gears, which are caused by the vibration of the pipeline, are lowered; and the shock-absorption installation mechanism buffers a recoil force during startup and turnoff for the fire-fighting water monitor, and during adjustment in the running of the fire-fighting water monitor, so that the installation stability is improved.

The invention provides a medical tool. The medical tool comprises a tool handle, a tool body and a drill bit; the too body is provided with a side cutting blade, one end of the tool body is connectedwith the tool handle, the other end of the tool body is connected with the drill bit, and the drill bit and the tool body are coaxially arranged. The drill bit and the tool with the side cutting bladeare integrated on one structure, and it can be guaranteed that when drilling and hole enlarging or hole repairing are conducted in the operation process, central axes can coincide completely. Therefore, the medical tool is good in self-centering and guiding, holes higher in precision can be machined, and tedious aiming and aligning operations are not needed in the punching process, so that the operation process of punching is simplified, and the punching efficiency is improved; in addition, the punching precision is higher.

The invention relates to the technical field of engineering machines, and discloses a piston lubricating system for a concrete cylinder, a control method and device thereof, and pumping equipment. Air flushing can be carried out on a lubricating pipeline, so that blockage of the lubricating pipeline and a lubricating hole is prevented, smooth lubrication on a piston of the concrete cylinder is guaranteed, and the abrasion risk of the concrete cylinder is further reduced. The piston lubricating system for the concrete cylinder comprises a lubricating oil pump, the concrete cylinder with the lubricating hole and a hydraulic lubricating device, wherein the hydraulic lubricating device is provided with an oil inlet and an oil outlet, and the oil inlet is connected with the lubricating oil pump. The piston lubricating system is characterized by further comprising an air source, a pressure-controlled switching valve and a switching valve, wherein the pressure-controlled switching valve is provided with a first inlet, a second inlet and an outlet, the first inlet is connected with the oil outlet of the hydraulic lubricating device, and the outlet is connected with the lubricating hole; an air inlet of the switching valve is connected with the air source, and an air outlet of the switching valve is connected with the second inlet; when the switching valve is connected, air of the air source enters the lubricating hole through the pressure-controlled switching valve.

The invention provides a gear shaft clearance adjustment structure for a steering device. Abrasion of internal parts of the steering device can be effectively reduced, axial clearances of gear shaftsare eliminated, and the abnormal sound problem is avoided. The gear shaft clearance adjustment structure comprises a steering device shell, a steering gear shaft and a rack which are engaged with eachother are arranged in the steering device shell, the steering gear shaft and the rack are arranged in a gear shaft hole and a rack hole correspondingly, the steering gear shaft is connected with thegear shaft hole through a rotating bearing, a clearance adjustment mechanism is arranged between the end face of the steering gear shaft and the end face of the gear shaft hole and comprises a supporting seat, a supporting arc face in sliding fit with the end face of the steering gear shaft is arranged at the top of the supporting seat, and the supporting seat and the gear shaft hole are fixed through an elastic structure.

A socket for a ball joint having a socket body with an opening and a hollow space, which comprises a concave inside peripheral surface that delimits the hollow space and extends around a longitudinal axis, and which is axially divided into two body halves which merge together in a transition zone, each of which comprises an inside peripheral surface half. A first body half comprises a first inside peripheral surface half which lies on a spherical surface and is closed, in the circumferential direction, and a second body half which comprises the socket opening, at least one slot extending axially and a second inside peripheral surface half which is closed in the circumferential direction, or closed apart from the slot. The second body half is designed such that the second inside peripheral surface half lies outside the spherical surface at least an axial distance away from the transition zone.