57results about How to "Reduce the maximum load" patented technology

The invention relates to an offshore underwater component device mooring cable. The offshore underwater component device mooring cable is characterized by being of a sheath-core composite double-layer structure, an inner core is of a eight-strand structure made of DM20 ultra-high molecular weight polyethylene, an outer layer is a fixing sheath formed by weaving wear-proof high-strength polyester fibers, the inner core is formed according to the steps of manufacturing rough yarn, manufacturing rope yarn, manufacturing strands, weaving ropes, soaking the inner core in resin, prestretching the inner core and drying the inner core, and the fixing sheath is formed according to the steps of splicing threads, twisting the threads, manufacturing strands and weaving the 32 strands around the inner core into the fixing sheath in a one-off mode through a double-layer weaving machine.

A launch vehicle is deployed from an aircraft using gravity extraction of the launch vehicle with the aid of a small parachute which assists the extraction and damps the yaw and pitch of the launch vehicle. The launch vehicle is supported on two rows of tires which are rotatably mounted to the aircraft. Gravity and the drag force of the parachute causes the launch vehicle to roll on the tires along the load deck and out of the aircraft. Because the extraction forces are dominated by gravity, the launch vehicle acquires a rotation in the pitch axis as the launch vehicle leaves the aircraft. After the launch vehicle clears the aircraft, the launch vehicle rotates in the pitch plane, and is damped in the pitch plane by the parachute to a pitch attitude which is 70-80° and the vehicle engine is ignited, detaching the drag parachute.

An elevator includes an elevator hoistway with an elevator car arranged to move therein. The elevator car includes an interior bounded by at least the elevator care roof. A frame structure includes two parallel, horizontal, elongated roof beams that are at a horizontal distance from each other. Between the roof beams is a trough that has an upward-facing base surface, and a standing platform in connection with the roof of the elevator car that includes a standing surface, immediately above which is a space free of the parts of the elevator car and free of the ropes of the elevator, for enabling standing on top of the standing surface at least when the elevator car is situated at a distance from the top end of the elevator hoistway. The standing surface forms at least a part of the base surface of the trough.

The present embodiments related to a device having a device element to which a high voltage can be applied. The device is provided with at least one additional conducting element which is disposed, embodied and connected in such a way that the element is assigned a defined potential value and a change to the electric field generated by the high voltage in the sense of a more favorable field distribution is effected by means of position, shape and potential value. According to the invention, maximum loads on switching elements are avoided and undesirable phenomena such as voltage breakdowns or flow voltages are counteracted as a result of the more favorable field distribution.

Provided is a printer in which a cut-off paper is pushed into a paper stacking portion without an additional power source while reducing the maximum load applied to driving means for driving a movable blade. A printer includes a movable blade for cutting a paper disposed between a fixed blade and a movable blade as it moves in a forward direction and separating a printed part as a cut-off paper; driving means for moving the movable blade in a reciprocating manner; a pushing member which is driven to push a cut-off paper in a thickness direction of the cut-off paper; a paper stacking portion for stacking the cut-off paper pushed by the pushing member; and a driving force transferring mechanism for transferring a driving force of the driving means to the pushing member to drive the pushing member.

The invention belongs to the field of the network control and management and software definition network, and provides an optimization controller deployment method based on a bat algorithm, the load and the propagation delay of the controller are considered so as to determine the optimal number and location of the controller. Through the SDN controller deployment method based on the bat algorithm,each bat represents a deployment strategy pi=(theta1, phi(theta1)), (theta2, phi(theta2)),..., (thetak, phi(thetak)), namely, a controller deployment scheme; the strategy is the cluster divided intok controllers, thetai is the location of the controller, phi(thetai) is a switch set of the thetai control, if the network G has N switches, and E paths, the location Xi of each bat is equal to {x1, x2,...,Xn}, each element in the Xi represents the controller subordinated to each switch, so that N elements are existent, the speed of each bat is Vi={v1, v2,...,vn}(vj belongs to[0,1]), if some element is 1, the location element of the bat can be updated, or cannot be updated so as to find the bat with the optimal strategy, namely, the optimal controller deployment strategy. The deployment disclosed by the invention is mainly applied to the network controller and management occasion.

The invention discloses a user adjustable load resource demand response method and system based on a virtual power plant. The method comprises the following steps: collecting and obtaining a user to be investigated according to an industry attribute and an electrical load of each user; identifying a to-be-investigated user with load adjustable equipment as a user participating in power demand response, and collecting adjustable load resources of the users; establishing an adjustable load technical economic model based on marginal cost, and establishing a capacity model of the maximum adjustable load based on safety constraints; therefore, an electric power real-time demand response adjustment algorithm model is formed; and when the demand response item is started, the operation state and the adjustable load resource of the adjustable load equipment of each user are taken as input data, and the power real-time demand response adjustment algorithm model is utilized to calculate the load regulation and control index of each user and carry out load regulation and control. According to the method, the power peak load is reduced, economic and reputation loss caused by orderly power utilization of the power grid is avoided, the maximum load of equipment at the peak load is reduced, and the operation capability of the power grid is improved.

The invention discloses a compressor with a two-grade scroll structure. The compressor comprises a shell; a transverse straight driving crankshaft is arranged in the shell; a bearing support I is mounted at one end of the bearing crankshaft; a fixed scroll I and a movable scroll I are mounted on the outer side of the bearing support I; a rotation preventing mechanism I is mounted between the movable scroll I and the bearing support I; a bearing support II is mounted at the other end of the driving crankshaft; a fixed scroll II and a movable scroll II are mounted on the outer side of the bearing support II; a rotation preventing mechanism II is mounted between the movable scroll II and the bearing support II; a high/low-pressure isolation plate is mounted on the outer side of the fixed scroll II; two ends of the shell are sealed through end covers to form a closed cavity; and two cavities separated by the high/low-pressure isolation plate respectively communicate with an intake pipe andan exhaust pipe. The operation range of the compressor is widened; the efficiency of the compressor is improved; and in particular, under low-temperature working conditions, two sets of scroll and support structures are adopted to share the load of the compressor, so that the life of the compressor is greatly prolonged, and the operation reliability of the compressor is greatly improved.

The invention discloses a petroleum drilling machine achieving continuous motion of tripping in and tripping out. The petroleum drilling machine comprises a top driving lifting mechanism and a rotating disc lifting mechanism. According to the structure of the rotating disc lifting mechanism, the left inner side and the right inner side of a derrick are each provided with a rotating disc guide rail, each rotating disc guide rail is provided with a tackle and a set of rotating disc beam guiding mechanism, and each tackle is located above the corresponding rotating disc beam guiding mechanism; each tackle is downwards hinged to an end head of a piston rod of an oil cylinder, and a cylinder body of each oil cylinder is fixed to the derrick; a fixed pulley on each tackle is wound with a rotating disc lifting rope, one end of each rotating disc lifting rope is downwards fixed to a drilling machine base, and the other end of each rotating disc lifting rope is fixed to a rotating disc beam; and the two sets of rotating disc beam guiding mechanisms are fixedly connected with the two sides of the rotating disc beam correspondingly. The invention further discloses a method for continuous motion of tripping in and tripping out. The petroleum drilling machine achieving continuous motion of tripping in and tripping out is compact in structure, the method for continuous motion of tripping in and tripping out is reliable, and efficiency of continuous motion of tripping in and tripping out is high.

The invention discloses a dual-cylinder rotation type compressor and a refrigerator with same. The dual-cylinder rotation type compressor comprises a shell and a compression mechanism, wherein the compression mechanism comprises an air cylinder component and two pistons; the air cylinder component comprises two air cylinders; each air cylinder comprises two slide sheet grooves; the two slide sheet grooves of each air cylinder are radially and symmetrically arranged; each slide sheet groove is internally provided with a slide sheet which is suitable for butting against the outer peripheral wall of the corresponding piston; and two slide sheets in each air cylinder are matched with the corresponding pistons so as to define two compression cavities. According to the dual-cylinder rotation type compressor provided by the invention, the slide loss of an eccentric shaft and the failure of the eccentric shaft are reduced, and the noise caused by the vibration and air exhaust of the compressor is reduced.

The invention discloses a conveying belt tensioning device and a belt conveyor. The conveying belt tensioning device comprises a support (3), a connecting rope (6), a first pulley (4) fixed to the support (3) and used for changing the direction of the connecting rope (6), and a balance weight (2) used for tensioning the connecting rope (6). The conveying belt tensioning device further comprises a connecting rope collecting and releasing device (7) used for releasing or collecting the connecting rope (6) so that when the belt conveyor works, the connecting rope (6) can be released or collected according to the stress conditions of the connecting rope (6), and the position of the balance weight (2) can keep unchanged or basically keep unchanged. By means of the conveying belt tensioning device, the maximum load borne by the connecting rope and a connecting piece can be reduced, and therefore the connecting failure is avoided.

An aircraft landing gear 2 is disclosed having a first arm 6a configured to have one or more wheels 8a mounted at one end, the first arm 6a being configured for mounting to a pivot 10a. The landing gear 2 includes a second arm 6b configured to have one or more wheels 8b mounted at one end, the second arm 6b being configured for mounting to a pivot 10b. The landing gear 2 further includes a first link 18a pivotally coupled to the first arm 6a, a second link 18b pivotally coupled to the second arm 6b; and a main link 20 pivotally coupled to each of the first and second links 18a, 18b and to a shock absorber 22 arranged to provide a biasing force via (i) the main linkage 20 and the first link 18a which opposes rotation of the first arm 6a about the pivot 10a and (ii) the main linkage 20 and the second link 18b which opposes rotation of the second arm 6b about the pivot 10b.

A hoisting system for the at least one of an installation, a decommissioning and a maintenance of a wind turbine which comprises at least a foundation, a tower, a yawing part and a rotor of at least 80 m diameter with at least one blade, comprising a first hoisting device which comprises measures to establish a load carrying joint with an already built part of the wind turbine which is located above the foundation, wherein the hoisting system is characterized in that the ratio between the maximum hoist load of the hoisting device and the mass of the heaviest part is larger than 0.2 and smaller than 1 and in particular smaller than 0.8 and more in particular smaller than 0.7 and preferably smaller than 0.6, with the heaviest part being a heaviest part which is hoisted as one piece and which belongs to the yawing part of wind turbine.

The invention provides a full-filled and oil-discharged double-acting oil pump. The oil pumpcomprises a fixed structure and a movable structure; the upper end of the fixed structure is connected withan oil pipe; the movable structure is mounted in the fixed structure, and can move in the fixed structure up and down; an outer pipe sleeves the fixed structure from top to bottom; the bottom end of the outer pipe is arranged on a fixed-pressure valve for keeping seal, and the upper end is fixed through a pressing cap; and the pressing cap is in threaded fixation with an exhaust valve. The outer pipe is a necessary conventional fitting of the oil pump, and is used for preventing the extrusion deformation of a bent well section of a pump drum, the vibration during working of the pump and accidents caused by looseness and unlocking of pipe columns due to the well wall collision. The technical scheme solves such problems as need of adding an oil discharger and environmental pollution easily caused by no air preventing measure, oil-air mixed pumping, low oil pumping efficiency and no oil discharging function in a traditional oil pump.

An external gear (4) of a dual-type wave gear device (1) is provided with first and second external teeth (7, 8), the numbers of which differ, and gaps (9) formed therebetween that serve as the cutter clearance areas for a tooth-cutting cutter. The maximum width (L1) of the gaps (9) is 0.1-0.3 times the width (L) of the external gear. The depth from the tooth crests of the first external teeth (7) to the deepest area (9a) of the gaps (9) is 0.9-1.3 times the tooth depth of the first external teeth. The depth from the tooth crests of the second external teeth (8) to the deepest area (9a) is 0.9-1.3 times the tooth depth of the second external teeth. The tooth root fatigue strength of the external gear provided with differing numbers of first and second external teeth is increased, making it possible to achieve a wave gear device with high load capacity and small speed ratio.