30results about How to "Reduce winding length" patented technology

Conventionally, a main shaft of the wind turbine apparatus has awkward such as heaviness or difficulties of assembling, since the length of the main shaft must be long to support a generator rotor. It is requested originally to light heaviness of a wind turbine apparatus, since it supports a wind wheel and a generator etc. on a tower at prescribed height. A hub 29 supported on the one side of the main shaft 10, a generator rotor 12 supported on the other side of the main shaft 10, the main shaft housing 40 and the generator housing 20 are combined, the generator rotor 12 having a backward opening is fixedly provided on the rear end of the main shaft 10, the main shaft 10 and the generator rotor 12 are detachably fixed through the opening, and a rotational fitting (rod bearing 33) for a pitch control shaft 37 is at least disposed at the rear space of the generator housing 20.

The invention relates to a ring coil motor (1, 20) with a primary part (3, 21) and a secondary part (2, 22), wherein the primary part (3, 21) has a ring coil (6, 25) and permanent magnets (9, 27).

The present invention relates to an elliptical unit block for preparing a core using a soft magnetic metal powder, and a core with excellent high current DC bias characteristics using the same, and more specifically, to an elliptical unit block for preparing a core using a soft magnetic metal powder used in an inductor for an automotive electronic sub-assembly using a high current buck or boost inductor or a three phase line reactor or fuel cell system for power factor correction (PFC), and a powdered magnetic core prepared using the same.

The invention discloses a multi-suspension-centres crane which comprises main beams, an operating mechanism, a lifting mechanism and an electric control system, wherein the operating mechanism comprises a bearing mechanism composed of an idle wheel device and an elastic body, and a drive mechanism composed of a motor, a reducer, a winding drum group, two groups of steel ropes, a pulley block and a pulley bracket, wherein the lifting mechanism comprises more than 2 sets of winding machines on each main beam, adopts a multilayer winding and symmetrical rope mode of duplex winding drums and steel ropes, and adopts a mode that a hook connecting piece is respectively hinged or fixedly connected with a corresponding hook group through a pin roll. The multi-suspension-centres crane has the characteristics of safety and reliability, strong practicability and the like through the self-set corresponding control method, is suitable to a crane with ultra-high lifting load, especially the multi-suspension-centres crane for lifting by sections on an offshore drilling platform.

The invention discloses a built-in self-test designing method of multiple embedded memories on single chip. In the method, reasonable memory built-in self-test scheme and structure are determined according to the working frequency, size, port type, number and layout of memories on a chip; in design, multiple memory built-in self-test logics are inserted, a test way of multiple combinations of serial and parallel tests is realized, the test time, test cost, test power consumption and area increase of test logics of the memories are optimized, the test efficiency is improved, and the layout wiring and timing closure in layout design are facilitated; a clock selection logic circuit is added to realize high-speed test and low-speed test; and moreover, with additional bypass logic of the memory, the loss of test coverage in a digital logic scanning test caused by the memory shadow logic can be eliminated, and the test coverage is increased.

The invention discloses a cable reel and a piece of engineering machinery. The cable reel comprises a reel housing, and a scroll spring and a planet deceleration mechanism which are arranged in the reel housing. The input end of the planet deceleration mechanism is connected with the reel housing, and the output end of the planet deceleration mechanism is connected with the free end of the scroll spring. The cable reel can reduce the number of scroll springs while ensuring the reeling length of a cable. Compared to the scroll spring, the planet deceleration mechanism is quite light in weight, quite small in size and quite low in cost. Therefore, the whole cable reel correspondingly has the advantages of low cost, light weight and small size.

The present invention provides a coupled inductor, the coupled inductor includes a first magnetic core and a first group of coils and a second group of coils wound on the first magnetic core, the first magnetic core is a frame magnetic core, A set of opposite sides of the frame magnetic core includes a first side and a second side, the first side includes a first part, a second part and a third part, the second side also includes three parts, the first side The second part of the side is located between the first part and the third part, the distribution of the three parts of the second side is consistent with the first side, and the first group of coils surrounds the first part of the first side and the second side The first part of the side is wound, the second group of coils is wound around the third part of the first side and the third part of the second side, the coupled inductor also includes a second magnetic core, so The second magnetic core is arranged between the two groups of coils, and an air gap is formed between the second magnetic core and the second part of the first side or the second part of the second side.

The invention discloses a touch display driving circuit, an arithmetic circuit, a display device and an operation method thereof. The touch display device includes a touch display driving circuit, a touch computing circuit and a processor. In the normal mode, the touch computing circuit obtains the control right, so as to obtain touch sensing data about the touch display panel from the touch display driving circuit. In the burning mode, the processor provides the program code to the touch display driving circuit, and controls the touch display driving circuit to obtain the control right, and the touch display driving circuit burns the program code into the touch computing circuit.

The invention relates to a hoisting mechanism of a multi-lifting-point joint crane, adopting double wound roll, steel wire rope multi-layer wrapping and symmetrical rope dropping types, and adopting the type that lifting hook connecting pieces are respectively hinged or fixedly connected with corresponding lifting hook groups through pin rolls. The invention has novel structure, solves a series of problems that deflection angles of steel wire ropes of a super-heavy large-span crane is not easy to be ensured, horizontal wrapping distance of the steel wire rope is too long, the efficiency of the mechanism is tool low, self-locking is easily caused for the mechanism, lifting joints are not synchronous, construction difficulty is large, and the like, has the characteristics of security, reliability and strong practicability, can avoid fatal security risk, is suitable for the crane with 10000-ton super-large hoisting duty, and is especially suitable for the multi-lifting-point joint crane for lifting when a marine drilling platform form abutting joint with subsections.

The invention relates to a direction changing type yarn textile working guide tensioning device and method. A bottom plate, direction changing pulley rods, an annular sliding groove, a connecting column, a connecting disc, anti-loosening devices and a rotating disc are included; the bottom plate is provided with the annular sliding groove, the annular sliding groove is connected with the directionchanging pulley rods in a sliding fit manner, the connecting column is installed in the middle portion of the bottom plate, the connecting column is located between the two direction changing pulleyrods, the upper end of the connecting column is provided with the connecting disc, the anti-loosening devices are evenly formed in the connecting disc in the circumferential direction, and the upper end of the connecting disc is provided with the rotating disc. According to the direction changing type yarn textile working guide tensioning device and method, yarns are synchronously supported to beopen through the anti-loosening devices, the winding length of the yarns is changed, and the yarns are wholly in the tightening state; and the conveying direction of the yarns is changed by position adjustment of the two direction changing pulley rods, friction generated when the yarns are subjected to direction-changing conveying, and the abrasion degree of the yarns is reduced.

The invention discloses a design method for optimizing the metal wiring of a herringbone clock tree, which comprises the following steps: 1) before placing the logic units in the chip, the overall module is divided into squares with a side length of 30 microns, and each In a square, the density of logic units is placed so that the logic units are evenly distributed. 2) Take out the vertical coordinates of adjacent fishbone tree branches, calculate the distance between adjacent fishbone tree branches, and record it as a, and create a horizontal line block at the center point of each adjacent branch. 3) Starting from the main trunk of the fishbone tree and taking a as the interval, create vertical routing blockages to the left and right respectively. 4) Grab the line names of the drive of the fishbone clock tree connected to its load, give priority to metal routing for these connections, delete the metal routing obstructions after the routing is completed, and then perform global routing. The invention saves interconnection line resources, optimizes clock structure and improves clock quality.

The invention discloses a big wire mesh splitting method for maintaining original physical routing topologies. The method comprises the following steps of: converting a big wire mesh into a tree topological structure and finding a strategy point position; finding an incremental layout legalization point position of the strategy point position; finding an optimum cutting point position of originalphysical routing; and inserting a buffer unit at the incremental layout legalization point position and physically connecting the buffer unit with the optimum cutting point position. According to thebig wire mesh splitting method for maintaining original physical routing topologies, the buffer unit is inserted at the incremental layout legalization point position to split the big wire mesh into aplurality of sub-wire meshes satisfying requirements, and the newly inserted buffer unit is connected at the optimum cutting point to sufficiently reusing the original connection topology and physical routing of the wire mesh, so that the wire wrapping length can be decreased to the greatest extent and then the consistency of time delay estimation and physical realization of an optimization scheme is ensured.

The invention discloses a film material conveying device used in a soft bag transfusion production line, which includes a rotating film conveying mechanism and a roller conveying mechanism, the roller conveying mechanism includes more than two fixed rollers and more than one movable roller for winding the film material The moving roller that moves relative to the fixed roller is arranged between two adjacent fixed rollers along the winding direction of the film material, and there is a pressure plate that can stop the film material from advancing before the moving roller that is closest to the rotating film feeding mechanism. tight body. The invention can realize membrane replacement without stopping the machine, and improve production efficiency and membrane material utilization rate.