35results about How to "Small working vibration" patented technology

The invention provides a bottom stud for a domestic appliance and the domestic appliance. The bottom stud for the domestic appliance comprises a hydraulic plate, a jacket, an adjustment foot, a hydraulic medium and a communicating device, wherein the jacket is fixedly connected with the hydraulic plate; the adjustment foot is arranged in the jacket and can axially move relative to the jacket; a containing cavity is formed among the hydraulic plate, the jacket and the adjustment foot; the hydraulic medium is arranged in the containing cavity, and the hydraulic medium is compressed / expanded as the pressure changes so as to drive the adjustment foot to axially move in the jacket for leveling; the communicating device is used for communicating at least two bottom studs for the domestic appliance, so that the hydraulic medium circulates between the bottom studs for the domestic appliance; and a control device which is used for conducting / stopping the circulation of the hydraulic medium is arranged on the communicating device. According to the bottom stud, the communicating device for communicating the bottom studs for the domestic appliance is controlled to conduct and stop by the control device, so that a good leveling support effect is achieved.

The invention discloses cyclone-type blockage removal equipment for a coal bunker of a thermal power plant and a using method of the equipment and belongs to the technical field of coal conveying of power plants. The blockage removal equipment comprises a hyperbolic coal bunker, a gas supply pipe network, a gas source system, a flow aiding system, a signal acquisition system and a control system, wherein the flow aiding system comprises a main control pipeline, sub-control pipelines, a flow aiding main pipeline and flow aiding sub-pipelines; the flow aiding main pipeline conveys gas for flow aiding to a coal bunker coal-falling section, a coal bunker variable-diameter section, a coal bunker hyperbolic section and a coal bunker transitional section through the sub-control pipelines respectively; electric control pneumatic butterfly valves for flow aiding, flow aiding nozzle groups and nozzles are arranged in the coal bunker coal-falling section, the coal bunker variable-diameter section, the coal bunker hyperbolic section and the coal bunker transitional section respectively; the signal acquisition system comprises a coal breaking signal sensor, a weight sensor and a rotating speed sensor; the control system comprises a metering instrument, a digital intelligent regulator and a programmable controller. The cyclone-type blockage removal equipment for the coal bunker of the thermal power plant has the technical characteristics of simple structure, low working vibration, high automation degree, low cost, quick and thorough blockage removal and the like.

The invention discloses a servo heat dissipation and damping motor. The motor comprises a motor body, a cooling cavity, a ventilation cavity and a motor cavity are formed in the motor body from left to right respectively, and a motor shaft is arranged in the middle of the motor body and rotatably connected with the motor body through first ball thrust bearings and second ball thrust bearings separately; blades are installed on the portion, located at the left end of the motor shaft, in the ventilation cavity, multiple vent holes communicated with an inner cavity of the motor shaft are furtherformed in the side surface of the left end of the motor shaft, and multiple exhaust covers are arranged on the left side wall of the ventilation cavity in the circumference direction; ventilation pipes are connected to the left ends of the exhaust covers, the vertical parts of the ventilation pipes are located in the cooling cavity, and the upper horizontal parts of the ventilation pipes extend out of the right end of the motor body. The servo heat dissipation and damping motor is high in stability, can conduct heat dissipation by itself during operation, and has a good heat dissipation effect, the motor works for a long time conveniently, and the service life of the motor is prolonged.

The invention relates to a high-speed rapier towel loom, which comprises a frame, on which a raising device, a weft beating device, a left weft insertion device, a right weft insertion device and an independent hemming device are installed in cooperation with each other, and the frame includes The left and right wall panels, the raising device is installed in the middle of the frame and the inner side of the left wall panel; the beating device is installed in the middle of the frame and the inner side of the left and right wall panels; the left weft insertion device is installed on the left outer side of the frame and inside the left wallboard; the right weft insertion device is installed on the right outer side of the frame and inside the right wallboard; the independent hemming device is installed on the right wallboard of the frame. The invention has the advantages of reasonable structure, high precision, clear layout, elegant appearance, and meets the requirement of high-speed rapier towel loom running at 330 rpm.

The invention discloses a wireless control-type digging machine. The wireless control-type digging machine comprises an operating mechanism, a power mechanism, a soil digging device, and a gearbox; the operating mechanism comprises a hand shank, a tray, sliding blocks, and a stopping block; the power mechanism comprises an engine, gears, chain wheels, conveyor belts, a turbine, and a turbine rod; the soil digging device comprises rotary knives, chain wheels, and ground wheels; the chain wheels are arranged in the gears, and the chain wheels are connected with chains; the gears are connected with the turbine with bearings for rotating; the engine is connected with the gearbox via a flexible shaft; and the hand shank is welded onto the upper end surface of the wireless control-type digging machine. According to the wireless control-type digging machine, output power decomposition is realized via chain transmission by the chain wheels so as to obtain two power with opposite directions, and ensure excellent cooperation of excavating and digging; reasonable transmission ratio is adopted, so that equipment operating vibration is small, and the wireless control-type digging machine is reliable and stable.

The invention discloses a multi-cylinder type gas compressor. The multi-cylinder type gas compressor comprises a cylinder and is characterized in that a middle frame is arranged at the middle position of an inner cavity of the cylinder in a sliding fit manner and divides the inner cavity of the cylinder into two second-level compression cavities along the two ends in the sliding direction; an equal-width cam is arranged in an inner cavity of the middle frame, and an equal-width cam mechanism is formed; each of the two second-level compression cavities is provided with a second-level cavity air outlet cavity for compression air outflow; each of the two inner side walls of the middle frame is provided with a second-level cavity air inlet valve for air inflow; each of two matched outer side walls, used for being in sliding fit with the inner cavity of the cylinder, of the middle frame is provided with a first-level cavity air inlet for air inflow, and each of the middle portions of the inner walls, used for being in sliding fit with the two matched outer side walls, of the cylinder is provided with a cylinder air inlet. The multi-cylinder type gas compressor has the beneficial effects that the structure is simple, few motion components are arranged, cost is low, work vibration is weak, and the gas compression efficiency is high.

The invention discloses a plate type coupled low-temperature flue gas waste heat recovery device used for air heating. The device comprises a waste heat recovery unit, an air heating unit and a connecting pipeline or enabling a phase-change working medium in the waste heat recovery unit and the air heating unit to form a closed circulation loop, wherein the waste heat recovery unit comprises a finned type heat-pipe heat exchanger, a phase-change working medium flow passage is arranged in the finned pipe, and a flue gas flow passage is arranged outside the finned pipe; the air heating unit comprises a plate type steam-air heat exchanger; and a steam-water separation steam pocket is arranged on the connecting pipeline between the waste heat recovery unit and the air heating unit, and a cold water inlet pipe and a steam outlet pipe of the finned type heat-pipe heat exchanger and a steam inlet pipe and a cold water outlet pipe of the plate type steam-air heat exchanger are all communicated with the steam-water separation steam pocket. The waste heat recovery device has compact structure, great effective heat exchange area, high heat exchange efficiency, high working stability and high heat energy recover and utilization rate.

The invention discloses a grinding machine for a brake valve of a railway vehicle. The grinding machine is characterized in that the whole machine is composed of a main machine body, a workbench, a valve grinding station, shields, a plane grinding station for the upper surface of a slide valve and a plane grinding station for the lower surface of the slide valve; the three stations are composed ofreciprocating motion mechanisms, pressing mechanisms and power transmission mechanisms respectively; each reciprocating motion mechanism is composed of linear guiding rails, a connecting board and agrinding air cylinder which are installed on the workbench, a first sliding board installed on the linear guiding rails, a second crooked board installed on the first sliding board and a hinge pin, anadjustment spring, a pull rod, a drum-shaped hinge pin and combined oil stones which are at the front end of the second crooked board; each pressing mechanism is composed of a second sliding board and a pressing air cylinder base, a pressing air cylinder, a pressing rod support, a pressing rod, a bearing, a reset spring and a reset board which are located on the second sliding board; each power transmission mechanism is composed of a first crooked board, an oscillating rod, first meets and a second meet. The grinding machine is ideal equipment for grinding the brake valve of the railway vehicle.