31results about How to "Low rotational force" patented technology

The invention provides a blade of a wind wheel for a vertical shaft wind-driven generator. The blade comprises a blade-shaped framework and a shell which is fixed at the outer surface of the framework, wherein the shape of the blade is a vertical column, and the horizontal cross section of the vertical column is in the shape of the section of the airfoil of an airplane, i.e., the outward outer side surface of the blade is a streamline-shaped arc surface; and the smooth transition of the outer side surface and the opposite inner side surface forms a larger windward end, namely the head part and smaller tail of the blade. Because of the stream-shaped form and specific framework structure of the blade provided by the invention, the blade has the advantages of light weight, high intensity andrigidity, simplicity in combination and manufacturing and high molding accuracy.

The invention discloses a high-temperature and high-pressure oil-gas well cleaning completion pipe string and a process. The high-temperature and high-pressure oil-gas well cleaning completion pipe string comprises an oil pipe, a packer, a ball seat, a fracturing sliding sleeve, a high-strength temporary plugging screen pipe, a punching screen pipe and a guide shoe which are sequentially connectedfrom top to bottom, high-pressure sealing safety joints are mounted in the high-strength temporary plugging screen tube below the packer at intervals; the high-strength temporary plugging screen pipeis composed of a base pipe and a composite hole plug, a plurality of holes are evenly formed in a pipe body of the base pipe, the composite hole plug is installed in the holes; the high-pressure sealing safety joints comprises upper joints and lower joints, and the upper joints and the lower joints are connected together; and the process comprises the process of using the high-temperature and high-pressure oil-gas well cleaning completion pipe string. According to the high-temperature and high-pressure oil-gas well cleaning completion pipe string and the process, improving the structure and use steps of the high-temperature and high-pressure oil-gas well cleaning completion pipe string is carried out, and the problems of deep and ultra-deep high-pressure and ultra-high-pressure oil-gas well slurry replacement and later rapid well repair can be better solved by adopting the high-temperature and high-pressure oil-gas well cleaning completion pipe string and the process.

The invention relates to a heat preservation box for an electric power online monitoring device to solve the problems that according to a heat preservation box for the electric power online monitoring device, temperature inside the heat preservation box is too high in summer, equipment can not work normally, and service life is shortened.An outer shell boss is arranged on the outer side of the top of a heat preservation box body, and the boss and the bottom are provided with vent holes and connecting rod holes; a motor and a center rotating shaft are fixed into the heat preservation box body; a worm gear rod can rotate around the center rotating shaft, one end of the worm gear rod is connected with one end of an upper connecting rod through an upper connecting rod rotating shaft, the other end of the worm gear rod and the negative camber of a worm gear are fixed together, and the other end of the worm gear rod is connected with one end of a lower connecting rod through a lower connecting rod rotating shaft; the other end of the upper connecting rod and the other end of the lower connecting rod penetrate through the connecting rod holes to be fixed to two heat insulation caps respectively; worm drive is formed by a threaded rod and the worm gear.The heat preservation box has the advantage that the too high temperature in the heat preservation box is effectively prevented.The heat preservation box is suitable for heat preservation of the electric power online monitoring device or heat preservation of other outdoor facilities.

A high efficiency generator free from any burden on the circuit in which electromotive force is generated in the same direction for all windings, and a fall in the torque of a rotor disc due to leakage magnetic field from the winding is prevented by preventing generation of leakage magnetic field from the winding. The generator comprises first windings (15-1 to 15-4) wound around a fixed ringlike core (5) while being split as a plurality of segments, second windings (25-1 to 25-4) wound to cover the gaps between the first split windings while being split as the same number of segments as those of the first windings, and first and second rotor discs (30, 35) disposed oppositely to the respective opposite sides of the ringlike core (5). The first rotor disc has first permanent magnets (40-1 to 40-4) opposing the first windings, the second rotor disc has second permanent magnets (45-1 to 45-4) opposing the second windings, and power generated in the first and second windings (15-1 to 15-4, 25-1 to 25-4) through the rotation of the first and second rotor discs (30, 35) is taken out.

The invention provides a rotary-table fixture. The rotary-table fixture comprises a drive motor, a first rotary disc, a second rotary disc, a clamping element and an adjustment disc, wherein a drive force of the drive motor is transmitted to a rotary drive shaft; the first rotary disc is fixedly connected to the rotary drive shaft, and capable of rotating together with the rotary drive shaft; thesecond rotary disc is provided with a boss surface which penetrates through a workpiece placement hole and is formed in the depth direction of the workpiece placement hole, the boss surface faces thefirst rotary disc, and an adjustment guide rail is arranged on the surface of the second rotary disc in the radial direction; the clamping element is capable of moving in the adjustment guide rail, and adjustment teeth are arranged at the bottom of the clamping element; the adjustment disc is in the shape of a ring with an inner ring which is holes, and the adjustment disc is arranged between thefirst rotary disc and the second rotary disc; a tooth groove is formed in one surface facing the second rotary disc, of the adjustment disc, and the tooth groove is formed in the surface of the adjustment disc in the shape of an annular groove; and after the adjustment teeth are matched with the tooth groove, mutual fixing for the clamping element and the adjustment disc can be realized.

An air-conditioning device for a vehicle includes a first evaporator and a second evaporator provided on a vehicle roof in a longitudinal direction of the vehicle. A refrigerant distributor is provided at a portion at which a refrigerant is supplied to the first evaporator and the second evaporator. The refrigerant distributor is operated to introduce the refrigerant selectively into the first evaporator and the second evaporator.

The present invention relates to a double swirl type air purifier and, more specifically, to a double swirl type air purifier comprising: a main body unit which accommodates a fluid for purifying inflow air therein; a suction unit located at one side of the main body unit, the suction unit sucking the inflow air; and a discharge unit located at a set position in the main body, the discharge unit discharging outflow air introduced from the main body unit, wherein the main body unit comprises a rotation unit located at a part of the lower side of the main body unit, the rotation unit rotating the liquid. Thus, the air purifying efficiency can be increased by increasing the contact area between the fluid swirled by the rotation unit and the inflow air swirled by the inflow pressure of the suction unit.

The invention discloses a damper with a one-way buffer function. The damper with the one-way buffer function comprises a protection shell, a rotor assembly, a sliding rod and a rack, wherein a receding groove is formed in the sliding rod, the rack is fixed on the part, located at the receding groove, of the left inner wall of the sliding rod, a protective inner cavity is formed inside the protection shell, and the rotor assembly is rotationally arranged in the protective inner cavity and is in clearance meshing connection with the protection shell; and the protection shell is transversely andslidably inserted into the sliding rod, so that the rotor assembly is in meshed connection with the rack. According to the damper, the rotor assembly is in clearance meshing connection with the protection shell, the rotor assembly is in meshed connection with the rack, when the rotor assembly is in meshed connection with the protection shell and the rack correspondingly, the rotor assembly generates buffering movement due to relative resistance, when the rotor assembly is only in meshed connection with the rack, the rotor assembly generates free rotation movement due to the lack of resistanceof the protection shell, so that the purpose of one-way buffering is achieved.

The invention discloses a rotary sleeve tool for steel wire rope tightening of an automobile glass lifter. The tool is characterized by comprising a cylindrical main body (1) and a rotary handle (2),the cylindrical main body (1) is vertically and fixedly connected with the rotary handle (2); an inclined plane (5) is arranged at the front end of the cylindrical body (1), a double-claw positioningcolumn (3) is arranged at the front end of the cylindrical main body (1) and perpendicular to the rotary handle (2), a spiral groove (4) is machined in the cylindrical cambered surface of the front end of the cylindrical main body (1) and used for guiding a steel wire rope, and the tail of the spiral groove (4) is connected with the inclined plane. The tool does not cross the center of a pulley, positioning is conducted through a pulley single-side hole, meanwhile, the steel wire rope is guided through the spiral groove in the cylindrical cambered surface of the tool and matched with a pulleyside notch through the inclined plane, and the steel wire rope slides into a pulley rail groove from the spiral groove through the inclined plane when rotating to the highest point through single-sidestress application.

A rotor blade (14) having a wing (52,54) and beam (42) construction for a tip shroud (30) is disclosed. Various construction details are developed for providing the shroud with a depression (48) in the shroud (30) and a transition zone (34) that extends from the suction side (26) and pressure side (24) of the airfoil to provide a flow path surface of the shroud. In one detailed embodiment, the tip shroud has a depression (48) generally outwardly of the airfoil and generally following the curve of the pressure and suction sides (24,26) of the airfoil from the leading edge region (36) to the trailing edge region (38).

The invention provides a sewing device with an upper thread tension adjustment device. When operating a thread-gripping dial (dial), the operation quantity of the thread-gripping dial is more than one ring, the torsional moment change of the dial operation is smooth, the cost is also low and during the assembly process, the position in the upper thread tension adjustment range is easily finely tuned. A tension representation part (17) is arranged on a tension setting nut (16) screwed with an external thread part (11a) of an axle 911) and a change-over mechanism (8) for changing the rotation of the thread-gripping dial (19) into the screwed movement is formed by the tension setting nut (16) and the thread-gripping dial (19). A thread-gripping slice (12) at another end of the axle (11) and another thread-gripping slice (13) are used for gripping the upper thread (4) and the upper thread tension adjustment device (10) with a thread-gripping spring (15) and an operation stable spring (18)is fixed on a device foundation (2) and an indication groove (3a) is arranged on a shell (3) of the sewing device.

The invention provides an ice cube tray auxiliary structure for assisting ice cubes in falling through ice cube tray swinging. The ice cube tray auxiliary structure comprises an ice-tray, movable pieces and a fixed piece; the movable pieces and the fixed piece are arranged at the two ends of the ice-tray correspondingly; ice grooves are formed in the ice-tray in an embedded mode, and fixed columnsare arranged in the ice grooves in a penetrating mode; sliding rails are arranged in the inner walls of the fixed columns in an embedded mode, and inner sliding rails are arranged in one sides of thesliding rails in an embedded mode; and inner sliding columns slide in the inner sliding rails. Jacking columns are arranged, thus the inner sliding columns can be each in an equilateral triangle shape through the jacking columns, when the ice-tray rotates, the sliding columns slide into the fixed columns, the pressure on the sliding columns can be increased through the jacking columns, the sliding columns can be assisted through the pressure generated during rotation of the ice-tray inn sliding into the ice grooves, the situation that when an existing ice-tray rotates, one end of a rotary shaft of the ice-tray swings a little, and consequently the ice cubes have certain adsorption force and then adhere to the interior of the ice-tray is avoided, and thus the ice-tray can assist the ice cubes in falling through the pressure generated during swinging of the ice-tray.