49results about How to "Reduce travel speed" patented technology

The invention relates to a method and an arrangement for operating a magnetically levitated vehicle by means of an arrangement having at least one long-stator linear motor. The linear motors are sub-divided longitudinally of a track into individual motor regions (A3, A4) in which only one vehicle (7e, 7f) at a time can normally travel. To increase the vehicle concentration along the track, provision is made in accordance with the invention for selected motor regions (A4) to be divided into at least two mutually independent motor region sections (A4a, A4b) and for one vehicle (7f, 7g) to be operated in each motor region section (A4a, A4b) at a part of that power which is preset for each motor region (A4).

The invention discloses a self-adaptation control device of a grain harvesting machine header. A header body is connected with a vehicle body axle of a harvesting machine; one end of a reel bracket isconnected with the header body, and a reel is installed at the other end of the reel bracket; spring tooth shafts are installed on the reel, and spring teeth are installed on the spring tooth shafts;a cutter pendulum ring box is installed below the reel; shaft heads at the two ends of an auger are fixed to the two side walls of the header body through bearings; a cutter is installed on a pendulum rod of the cutter pendulum ring box; by utilizing an information collection device, the work state of the harvesting machine is acquired, and adjustment is conducted. The invention discloses the self-adaptation control device and method of the grain harvesting machine header. For matching of the operation state of the harvesting machine header and the operation speed and feeding quantity of theharvesting machine header, the problems are solved that in order to adapt to different operation conditions, an operator needs to adjust the operation state of the harvesting machine header frequently, and otherwise the harvesting machine cannot work stably; the work efficiency is greatly improved, and the failure rate of the harvesting machine is reduced.

A bicycle having a pedal crank drive (12) and having an electrical auxiliary drive, which is connected to the pedal crank drive (12), is described, which has a wheel hub motor (7) having a freewheel hub for the rear wheel (6). To provide advantageous drive conditions, it is proposed that the wheel hub motor (7) for the rear wheel (6) have a drive connection via a transmission gearing (8) to an electrical auxiliary motor (9) of identical size.

The invention relates to a large vacuum hot-pressing furnace which comprises a furnace body framework, a vacuum chamber, an upper molybdenum press head sample table, a lower molybdenum press head sample table, a hydraulic system, a vacuum obtaining system and a heating chamber. The upper molybdenum press head sample table and the lower molybdenum press head sample table are respectively arranged on the upper portion and the lower portion in the vacuum chamber. The lower molybdenum press head sample table is supported by four molybdenum columns. Six-zone temperature control heating is adopted for the heating chamber. A heating chamber metal heat-insulating reflection screen is composed of molybdenum screens and stainless steel screens. The hydraulic system is arranged at the upper end of the furnace body framework. According to the large vacuum hot-pressing furnace, the molybdenum screens and the stainless steel screens are used for shielding in the periphery of the heating chamber, and the six-zone temperature control heating is adopted, so that the heating evenness of the heating chamber is improved, the temperature control precision is +-1DEG C, and the mean temperature of the heating chamber is +-2 DEG C; the displacement precision of the hydraulic system reaches 0.015mm, and the largest tonnage of a hydraulic punch is 200 tons. The large vacuum hot-pressing furnace is favorable for machining precise instruments and large components and has the advantages of being good in heating evenness, high in temperature control precision, quick in temperature rise, high in hydraulic precision, and the like.

The invention provides a biomass drying system, and belongs to the field of biomass fuel drying. The biomass drying system solves the technical problem that power generation efficiency of existing biomass power plants is low. The exhaust gas of a boiler tail of a biomass power plant and the waste heat of the low pressure steam after the steam turbine works are fully utilized. Solar preliminary drying, first-stage rotary drum drying, and second-stage rotary drum drying are adopted. Clean energy is adopted to the whole drying process, and no pollution is produced to the environment. A solar drying room is internally provided with a spiral material conveying channel. Lugs are arranged at a heat dissipating channel in the spiral material conveying channel at intervals. The travel speed of biomass fuel in the material conveying channel is lowered, the standing time is prolonged, heat exchange between the biomass fuel and hot water in the heat dissipating pipe is enhanced, and drying efficiency is improved.

The invention provides a biomass drying method, and belongs to the field of biomass fuel drying. The technical problem of low power generation efficiency of an existing biomass power plant is solved.According to the biomass drying method, flue gas on the tail part of a boiler of the biomass power plant and low-pressure steam waste heat after a steam turbine does work are fully utilized, and solarenergy primary drying, primary drum drying and secondary drum drying are adopted, and clean energy is used in the whole drying process, and the environment is not polluted. A spiral material conveying channel is arranged in a solar energy pre-drying chamber, and convex pieces are arranged at intervals on a heat dissipation pipeline in the spiral material conveying channel, so that the traveling speed of biomass fuel in the material conveying channel is slowed down, the residence time is improved, the heat exchange between the biomass fuel and hot water in the heat dissipation pipeline is enhanced, and the drying efficiency is improved.

The invention relates to the mechanical field and relates to wire-dragging device. The wire-dragging device of a rail shuttle vehicle matched with a shuttle storage rack in use comprises a wire-dragging device which comprises a wiring assembly, a winding assembly and a coil fixing wheel shaft; the wiring assembly comprises a slide contact disc and a wiring disc; the winding assembly comprises a driving motor, a winding disc, a winding guide tube and two guide wheels; the driving motor is linked to a coil screw of the winding disc through a synchronous belt, a power supply line winds the winding disc, and the power supply line extending out of the winding disc, penetrating through the winding guide tube, penetrates through a gap between the two guide wheels; the circular slide contact railis arranged on the slide contact disc, and a wiring head in contact with the slide contact rail is arranged on the wiring disc. Furthermore, the wire-dragging device is mounted on the rail shuttle vehicle, so that the rail shuttle vehicle shuttles bidirectionally in the shuttle storage rack in a certain distance range without a battery or a capacitor, so that the manufacturing, using and maintenance costs are lowered, the energy consumption is reduced, and the efficiency, stability and durability are improved, the load of the storage rack is reduced, and therefore, the goods bearing capacity of the storage rack is prevented from being reduced.

The invention discloses a mine control device for automatic mine laying cars and a use method thereof. The device used in the method includes a mine laying car body, a power device disposed in the mine laying car body, a projectile mine laying device disposed in the mine laying car body, and a falling mine laying device disposed in the mine laying car body. The device is characterized in that thepower device comprises a first switching cavity disposed in the mine laying car body, and the first switching cavity is disposed with a first switching power block that is slidable left and right; a first gear cavity is disposed in the first switching power block. The invention aims to design fully automatic mine-laying, which can be ensured by the detecting device before the mine-laying to ensurethat the minefield is not repeated, and the minefield is scientifically evenly distributed. At the same time, the mine can also be placed into an unreachable area by ejecting, and the mine control device of an automatic mine laying car and its use method can be achieved at the maximum to reduce the speed of the enemy.

The invention relates to the field of sulfur wet forming, in particular to a sulfur wet forming system which comprises a water tank used for containing process water, a liquid storage tank used for storing alkali liquor, a pH detector used for detecting the pH value of process water in the water tank, a liquid injection pipeline connected to the liquid storage tank and a controller. The liquid injection pipeline is used for injecting the alkali liquor in the liquid storage tank into the water tank, and is provided with a metering pump. The controller is used for controlling the metering pump to be opened or closed according to a detection value of the pH detector. According to the sulfur wet forming system, the pH value of process water is always kept in a proper range in the production process, equipment and pipelines are prevented from being corroded, the service life of the sulfur wet forming system is prolonged, and the forming quality of sulfur particles is improved.

The invention discloses a freight train scheduling method and system based on rolling time domain event influence analysis. According to the method, firstly, an initial train working diagram is compiled, and then when an emergency occurs, according to feature data corresponding to the emergency, train working diagrams corresponding to rolling time domains are sequentially calculated in a rolling mode through a train operation plan adjusting model. According to the method, adjustment on the train operation plan can be simulated in a rolling calculation mode until an output result capable of overcoming the influence of emergencies is obtained. Therefore, the most direct scheduling adjustment scheme can be automatically screened out according to the characteristic values of the emergencies. According to the train operation plan adjustment model, an ideal scheduling result can be quickly obtained by using simple calculation steps in an iteration mode.