56results about How to "Frequent maintenance" patented technology

A system, apparatus and method provide a means for managing wear of brake friction material such that even friction material wear is experienced between brakes. The available friction material of each brake is monitored to determine an amount of wear. Based on the amount of wear, a braking force applied by each brake may be varied to ensure even wear between brakes.

Provided are semiconductor fabrication equipment and a related method of controlling pressure in a process chamber associated with the equipment. Multiple connected vacuum lines, each having a controllable valve, are used to exhaust gas from the process chamber.

A wind turbine generator that allows for size and weight reduction of a nacelle bedplate and that enables easier maintainability, such as device replaceability, is provided. In a wind turbine generator that generates electricity by driving a generator connected, via a drive train, to a rotor head that has wind-turbine rotor blade attached thereto and rotates together therewith, at least a part of the drive train that transmits torque from the rotor head to the generator is disposed on a front side of the rotor head opposite a nacelle.

For manufacturing a high-pressure discharge lamp, a tungsten electrode is welded to a molybdenum foil by bringing a shaft of tungsten electrode into close contact with the molybdenum foil, and by irradiating a laser light, having a metal melting wavelength, to a junction of the molybdenum foil with the tungsten electrode from a location closer to the molybdenum foil to melt both the molybdenum foil and the shaft of the tungsten electrode for bonding.

To provide a technique for reducing the power consumption associated with word line activation in a semiconductor memory device. The semiconductor memory device is provided with a word line activation controller for controlling word line activation. Where consecutive operation cycles use multiple-bit addresses that include an identical row address, the controller maintains an activated state of a word line without deactivation thereof until the row address changes. In the event of a refresh request when a word line in a certain block is in an activated state, the controller can deactivate the word line, with the proviso that no external access is currently being performed in the block. Where a request for external access to the block is made within a predetermined period after the refresh request, the refresh operation for the block is suspended, and the word line for external access is activated.

A wheel brake for a vehicle including a brake disc unit adapted to brake the rotation of a rotation element, which is adapted to be drivingly connected to the wheel . The brake disc unit includes a first set of discs and a second set of discs arranged in an alternating manner in an axial direction. The discs in the first disc set are adapted to be rotationally rigidly connected to the rotation element. The brake disc unit includes at least one separator element, which is adapted to keep a sufficient distance between two adjacent discs of one of the disc sets for an intermediate disc from the other disc set to rotate at least substantially freely relative to the spaced discs when the brake disc unit is in a deactivated condition.

The invention discloses a method for treating iron-containing dusts in a steel plant by using a melting gasification furnace, which comprises the following steps of: preparing uniformly mixed raw materials, namely mixing various iron-containing dusts in the steel plant, iron ore concentrate powder, adhesive and flux in a certain proportion to form the uniformly mixed raw materials; preparing lumps, namely preparing the uniformly mixed raw materials into the lumps by a cold bond agglomeration method or a hot-state agglomeration method; and smelting in a blast furnace, namely adding the prepared lumps and a certain amount of coke into the high-wind-temperature melting gasification furnace to perform melting, and finally obtaining molten iron by melting. The method for treating the iron-containing dusts in the steel plant can effectively solve the pollution problem of the iron-containing dusts, can obtain qualified molten iron, and makes full use of valuable elements such as carbon, iron and the like in wastes.

The invention provides a method for treating coking biochemical effluent by microwave-oxidation-coagulation technology, which comprises the following steps of: A, adding a mixed reagent consisting of H2O2 and Fe2+ into the coking biochemical effluent until the mass concentration of hydrogen peroxide in water is between 0.01 and 1 percent, and controlling the pH to between 2.0 to 6.0; B, delivering the mixed liquid into an industrial microwave oven for processing for 5 to 60s; C, regulating the pH value of the mixed liquid to between 6.0 and 6.5 or 7.5 and 8.5, and carrying out oxidation treatment for 1 to 4 hours under an aeration condition that the aeration rate is 10 to 40m<3>/h; D, adding a coagulant into the liquid until the mass concentration of the coagulant in the liquid is betweenone millionth and one hundred thousandth; E, precipitating and separating; F, filtrating the liquid to obtain process effluent for recycling; and G, collecting sludge, separating the liquid from the sludge; and returning the liquid to the step D, and filter-pressing the sludge to obtain sludge cakes. The method realizes recycling, does not discharge sewage, and effectively solves the problem thatpresent coking sewage is difficult to treat and to recycle.

A circuit breaker arraignment including at least two trip mechanisms the first trip mechanism acting to immediately trip to open contacts of the circuit breaker upon reaching a first threshold current level, and the second trip mechanism acting to trip to open the contacts once both a second current threshold is reached and a time delay has elapsed, the contacts moved by a linkage assembly that is held under mechanical advantage such that when acted on by one of the two trip mechanisms, the mechanical advantage is released to rapidly open the contacts.

A wheel assembly (1) for a vehicle, uncommonly capable of a compact construction and ease of maintenance, comprises: a wheel rim (2) suitable to rotate around an axis of rotation (a- a), defining an axial direction (A-A) parallel or coincident with said axis of rotation (a-a), an orthogonal radial direction (R-R), and a circumferential direction locally coincident with a tangential direction (T-T) orthogonal to the axial direction (A-A) and the radial direction (R-R), said wheel rim (2) having a radially outer side, or outer side (3), opposite the axis of rotation (a-a), and a radially inner side, or inner side (4), facing the axis of rotation (a-a), said rim being suitable to receive externally a tyre (5), and wherein said wheel rim forms internally a cylindrical chamber of the rim (54) delimited radially from said inner side (4); a motor (306) comprising a rotor (307) and a stator (308); said rotor (307) being supported, free to rotate, on said stator (308); said stator being fixed to a stator support (120); said motor (306) being housed in the said cylindrical wheel rim chamber (54) of said wheel rim (2 ); said rotor (307) is selectively, removably and rigidly connected to the inner side (4) of said wheel rim (2), avoiding the interposition of elastic members or damping members; said assembly (1) also comprising a braking device (10), said device comprising a disc brake disc (11) having a radially outer edge (12) and a radially inner edge (13), said braking device (10) further comprising a disc brake caliper (14) selectively, removably and rigidly connected, directly or indirectly, to said stator support (120), said disk brake caliper (14) being placed with its active part (21) astride the inner edge (13) of said disc brake disc (ID; in which said wheel rim (2) is made in two parts (15, 16) selectively and removably connected with each other to form a wheel rim body (17); and wherein one of the two parts of said wheel rim (15) forms in a single piece at least one spoke (18) that protrudes radially towards the axis of rotation (a-a); and wherein said disc (11) is connected with its outer edge (12) to said at least one spoke (18).

The addition of nanometer particles to electroless metal plating baths reduces or eliminates seeding in the electroless plating baths. The reduced seeding results in less inclusions or pitting in the coating. Usually the maintenance and frequent tank-cleaning schedule can be increased beyond the normal 2-3 day. The properties of the coating can be improved by the co-deposition of the particles into the bath. Properties such as hardness, corrosion resistance, and wear resistance were improved.

To provide a technique for reducing the power consumption associated with word line activation in a semiconductor memory device. The semiconductor memory device is provided with a word line activation controller for controlling word line activation. Where consecutive operation cycles use multiple-bit addresses that include an identical row address, the word line activation controller can maintain an the activated state of a word line activated during an initial cycle of the consecutive cycles, without deactivating it until a final cycle of the consecutive cycles. If a refresh operation is to be performed during a cycle among the consecutive cycles after the initial cycle, the word line activation controller can deactivate the activated word line prior to performing the refresh operation.

The invention discloses a movable fluorine-containing wastewater treatment method and device. The pH value of high-concentration fluorine-containing wastewater is regulated to be neutral or alkaline,CaCl2, PAC, magnetic seeds and PAM are added sequentially for treatment, precipitation is performed, and effluent is adsorbed. The device comprises a pipeline mixer, a NaOH dissolving tank, a calciumchloride dissolving tank, a mixing reaction tank, a chemical coagulation tank, a magnetic seed coagulation tank, a flocculation coagulation tank, a settling tank, a middle pool, an aluminosilicate adsorption tower, a regenerated wastewater storage tank, a coagulant dissolving tank connected with the chemical coagulation tank, a magnetic seed adding device connected with the magnetic seed coagulation tank and a flocculant dissolving tank connected with the flocculation coagulation tank, wherein the mixing reaction tank, the chemical coagulation tank, the magnetic seed coagulation tank, the flocculation coagulation tank, the settling tank, the middle pool, the aluminosilicate adsorption tower and the regenerated wastewater storage tank are sequentially connected with the pipeline mixer. Thedevice has the characteristics that the device occupies little land, is high in treatment capacity, takes effect rapidly and is low in energy consumption, easy to maintain and the like.

The invention discloses a power generating method adopting an ionic thermal motion principle. The power generating method comprises the following steps of: firstly, transferring graphene to a substrate and bonding a graphene film on the substrate; secondly, depositing a conducting material with a work function higher than that of the graphene at one end of the graphene film to obtain a first electrode and depositing a conducting material with a work function lower than that of the graphene at the other end of the graphene film to obtain a second electrode; thirdly, leading out the first electrode and the second electrode at two ends of the graphene film by using two metal wires; and fourthly, holding an ionic salt solution in a container casing, integrally immersing the substrate, the graphene film, the first electrode, the second electrode and the two metal wires in the ionic salt solution and leading the metal wires to the outside of the container casing. The invention also provides a graphene battery manufactured by using the power generating method. The power generating method adopting the ionic thermal motion principle and the graphene battery manufactured by the power generation method have the advantages of safety, reliability, no need of using power for charging, long service life of the graphene battery and no harm to a human body and environment.

The addition of nanometer particles to electroless metal plating baths reduces or eliminates seeding in the electroless plating baths. The reduced seeding results in less inclusions or pitting in the coating. Usually the maintenance and frequent tank-cleaning schedule can be increased beyond the normal 2-3 day. The properties of the coating can be improved by the co-deposition of the particles into the bath. Properties such as hardness, corrosion resistance, and wear resistance were improved.

The invention discloses a mining shielding communication cable wrapping machine, which comprises a bottom plate and a wrapping machine, wherein the right side of the top of the bottom plate is fixedlyconnected with the bottom of the wrapping machine; rubber blocks are fixedly connected to the two sides of the top of the wrapping machine; and a baffle is fixedly connected to the top of a connecting rod. According to the mining shielding communication cable wrapping machine which relates to the technical field of communication cable wrapping machines, a to-be-processed communication cable can be thoroughly cleaned once before entering the wrapping machine, the cleaning speed is high, the normal processing is not influenced, and therefore, impurities such as dust are effectively prevented from being attached to the communication cable; and a protective plate extends out of the top of the cleaning position during cleaning, so that the situation of secondary pollution caused by scatteringof dust at the top is avoided, the communication cable entering the wrapping machine is always clean at any time, the cable finally processed by people cannot go wrong, and the use by people is facilitated.

The invention discloses an overload protection type electrical starting duplicate gear and a starting system. The overload protection type electrical starting duplicate gear comprises a duplicate gear shaft, a gear body I and a gear body II, wherein the gear body I and the gear body II are arranged on the duplicate gear shaft in a drive matching mode. The duplicate gear shaft is sleeved with the gear body II so that an inner conical surface of the gear body II and an outer conical surface of the duplicate gear shaft can form a conical surface pair. The gear body II has axial force for locking the conical surface pair and enabling the sliding torsion value of the conical surface pair to be larger than or equal to the electrical starting torsion value. When the reverse dragging phenomenon occurs and the torsion value exceeds the largest static friction force between the conical surfaces due to the fact that an engine suddenly slows down or stops under heavy loads and great inertia in the high-speed running process, the inner conical surface and the outer conical surface can slide, in other words, the gear body II and the duplicate gear shaft can slide relative to each other, and therefore the gear and a starting clutch of the whole electrical starting system can not be damaged, and the overload protection function is achieved. In the use process, the taper angle, the roughness of the conical surfaces and the axial force can be set according to the actual requirements, and therefore the required largest static friction force can be set.