48results about How to "Increase the rated load" patented technology

The invention relates to a high-precision thrust centripetal combined tapered roller bearing, which is provided with a thrust block seat ring and a movable ring; a thrust tapered roller and a retaining frame are arranged between the thrust block seat ring and the movable ring; a centripetal thrust tapered roller and a retaining frame are arranged between a static inner ring and a movable ring, thereby combining a thrust tapered roller bearing for bearing axial load and a centripetal thrust tapered roller bearing for bearing radial load into a whole. The high-precision thrust centripetal combined tapered roller bearing realizes a capacity of bearing large thrust and large centripetal load; and a pressure adjusting ring is arranged to produce zero or negative clearance to meets the requirements that a numerical control vertical lathe has high precision, high rigidity and a rotating floor with a high rotational speed. Compared with the prior good three-row puncheon bearing of the INA corporation, the weight of the high-precision thrust centripetal combined tapered roller bearing is only 89.7 percent; but the axial load and the radial movable load are respectively 3.7 times and 2.1 times; and the axial static load and the radial static load are respectively 2.864 times and 1.54 times. As a raceway and a block side generatrix use special design, the tapered roller bearing removes the skid of the roller and has low operating temperature and high limit speed. The structure is used to process an inside diameter, the raceway, the block sides, etc. by once positioning and clamping and has high rotating precision; the radial jumping kinetic energy and the axial jumping kinetic energy can reach less than or equal to 3 mu m. The high-precision thrust centripetal combined tapered roller bearing can be used for a high-precision numerical control vertical lathe, a vertical milling and rotating floor, a radar rotating floor, etc.

The plunger (1) has a cylindrical housing (2) receiving a roller (4) for starting a periodic stroke generator within a cylindrical inner casing (5) in a region of an upper annular end (3). A bridge piece (6) axially projects through the housing below the roller. A lower side (8) of the bridge piece faces towards a lower annular end (7) of the housing, and indirectly functions as a system for a plunger follower. Four notch-like discharges (9) longitudinally extend at the casing. The roller with ring edges (10) projects into the discharges.

The invention provides a splicing type variable load lifting mechanism, which includes a vertical outer frame, the vertical outer frame includes a plurality of meta-frames spliced ​​up and down, the top of the vertical outer frame is provided with a drive assembly, and the vertical outer frame is equipped with a car Car assembly, the car assembly is slidingly connected with the vertical outer frame, the drive assembly drives the car assembly to move up and down, there are counterweight mechanisms on both sides of the vertical outer frame, the counterweight mechanism is slidingly connected with the vertical outer frame, and the counterweight mechanism is connected to the vertical outer frame. The car components are connected, and the sliding direction of the counterweight mechanism is opposite to that of the car components. The weight of the car is balanced by the counterweight mechanism, which reduces the load on the motor and reduces energy consumption; the rated load of the car can be increased by increasing the number of counterweights in the counterweight mechanism. , no need to replace the high-power motor; the car adopts lifting points and multiple guide wheels, the car will not tilt when the goods enter and exit, and the safety is high.

The invention provides a single-phase oil-immersed transformer and a special iron core therefor. The single-phase oil-immersed transformer comprises a box body with a box cover, an iron core, a radiating pipe, an oil conservator, a lifting mechanism, a power mechanism and an oil tank, wherein the iron core is a single-frame dual-core column with a groove, is arranged at the center of the box body and is immersed by an oil body; a coil is led out of the box cover; a high-voltage insulating sleeve and a low-voltage insulating sleeve respectively sleeve a lead; the radiating pipe is arranged on the side wall of the box body; the oil conservator is arranged at the upper end of one side of the box body; the lifting mechanism is arranged below the iron core; the bottom end of the lifting mechanism is fixedly connected with the box body; the power mechanism is connected with the lifting mechanism; the oil tank is connected with the power mechanism; and the oil tank is arranged outside the box body. The single-phase oil-immersed transformer can drive the lifting mechanism to take out the iron core by taking the oil in the box body as a power source through the power mechanism and stores the oil in the box body into the oil tank, so that maintenance of the iron core and oil-change operation are facilitated; the cost is saved; and the maintenance efficiency is also improved.

The invention provides a roller-type slider toggle switch. A movable contact assembly is arranged on a base of a base assembly through a support, a toggle assembly is movably arranged in a metal housing of a reversing device, the lower end of a handle of the reversing device is inserted into a toggle groove of the toggle assembly, and a latch handle assembly is fixedly arranged at the upper end of the handle; a toggle of the toggle assembly is matched with a limiting block of the base assembly through saw teeth, a roller is arranged on a movable contact of the movable contact assembly, and the base assembly is fixedly connected with the metal housing through the base. The roller-type slider structure is made of stainless steel, so as to solve the problems that the slider of the conventional toggle switch, which is made of hemispherical plastic, is easy to abrade and high in requirements for finish and machining precision; the slider is unlikely to abrade, so that the pull handfeel of the toggle switch is greatly improved, meanwhile, the rated load of the switch is also improved, the toggle switch can bear high current but the slider part is not burnt or deformed.