352results about How to "Reduce mechanical wear and tear" patented technology

The invention relates to an energy saving system of a belt conveyor and an energy-saving control method of the energy saving system of the belt conveyor. The energy saving system of the belt conveyor comprises a system starting button, a belt conveyer, a material detection device, a signal transformer, a belt conveyer drive motor, a frequency converter and a programmable controller. The belt conveyer is provided with a conveyer belt and the belt conveyer drive motor. The material detection device is installed right belowunder the conveyer belt and connected with the programmable controller through a signal line. The system starting button is connected with the programmable controller which is connected with the belt conveyer drive motor through the frequency converter by controlling the signal line. The belt conveyer system realizes the automatic control state of ''high speed with materials and low speed without materials''. According to the energy saving system of the belt conveyor and the energy-saving control method of the energy saving system of the belt conveyor provided by the invention, the idle time and idle energy consumption of the belt conveyer can be effectively reduced, so that the system mechanical loss generated in the time is reduced, the work efficiency is remarkably improved, the electric energy loss is reduced, and the purpose of saving energy and reducing consumption is realized.

The invention relates to a method and a system for centralized management of an electric saver of a central air-conditioner; a water flow pressure difference sensor between a water supply main pipe and a return water main pipe of a central air-conditioner freezing water system, a flow meter for a two-way freezing water return pipe, a water temperature sensor for a back-way freezing water return pipe of a freezing water pump, the water temperature sensor for a freezing water outlet pipe of an air conditioning mainframe, the water temperature sensor for a cooling water outlet pipe of the air conditioning mainframe and the water temperature sensor for a cooling water inlet main pipe of the air conditioning mainframe respectively collect pressure difference, flow speed and water temperature of the corresponding position; collection values are transferred into a fuzzy controller, the fuzzy controller gains dynamic flow and speed parameters through the control of a fuzzy prediction model and an optimal algorithm model, the dynamic flow and speed parameters are transferred into each electric saver, and the speed and the flow of corresponding fans and water pumps are controlled through the frequency change of the electric saver. The invention has the advantages of the high temperature-adjusting precision, the good dynamic performance, the small mechanical loss, the fully-automatic remote monitoring, the closed-loop control of temperature, the soft starting and stopping of a motor and the optimum system electricity-saving rate.

An electromagnetic drive variable-rigidity bionic swing propelling device comprises a support, at least two sections electromagnetic swing units and a tail fin. The whole shape of a fish body is sealed by a fish skin. The first section of electromagnetic swing unit is connected with the head of the head of the fish body. Other sections of electromagnetic swing units are connected with a flexible spine. The last section of electromagnetic swing unit is connected with the tail fin. The electromagnetic swing unit comprises an upper magnetic body, a lower magnetic body, control coils, the flexible spine and an armature. The flexible spine is hollow. A coil for controlling electric currents is embedded into the flexible spine. The upper magnetic body and the lower magnetic body are fixed on the flexible spine respectively. The armature is fixed in the middle of the upper magnetic body and the lower magnetic body. The middle of the armature is fixedly connected with the flexible spine. The control coils are sleeved at two ends of the armature. The flexible spine is driven to bend by the generated electromagnetic torque so as to drive the fish body to swing for propelling. The electromagnetic drive variable-rigidity bionic swing propelling device is small in size, light, continuous in action, easy to implement, low in noise and low in mechanical loss.

The invention discloses a pump-free lithium ion flow battery and belongs to the field of a chemical energy-storing battery. The pump-free lithium ion flow battery comprises a plurality of battery subsystems, an anode liquid preparation tank, a cathode liquid preparation tank, an anode liquid collection tank, a cathode liquid collection tank, an anode conveying tank and a cathode conveying tank. An electrode suspension solution is pushed by gravity and inert gas pressure to circularly flow, so as to avoid using a pump. The pump-free lithium ion flow battery has the advantages of simplicity in operation and convenience for controlling, reduces mechanical loss of a battery system and improves the whole efficiency and the safe use performance of the battery.

The invention relates to an in-situ warm-mixing regenerant for a bituminous pavement, and a preparation method and a construction method of the in-situ warm-mixing regenerant. The strength of a cold-regenerating mixture is longer in formation time; a finish coat in a certain thickness is required to be paved additionally; the property of the regenerated mixture is poorer; a lower level cold mixing technology is used generally; and cement is required to be added generally, so that the durability of the level is reduced. The in-situ warm-mixing regenerant for the bituminous pavement comprises the following raw materials in parts by mass: 10-30 parts of naphthenic hydrocarbon, 20-40 parts of furfural extract oil, 30-50 parts of deionized water, 10-20 parts of microwave absorption agent, 5-10 parts of surfactant, 5-10 parts of dispersing agent and 1-5 parts of antiaging agent. According to the in-situ warm-mixing regenerant, the preparation method and the construction method, the mixing cost can be lowered; the construction efficiency is improved; a use ratio of old materials is increased; compared with in-situ heat regeneration, the ageing of a bituminous mixture is reduced; the service life of the pavement is prolonged; a cooling rate is reduced; the discharge amount of harmful gas and dust is decreased; new aggregates and new bitumen are not required to be added; and the material cost is lowered.

The invention discloses a liquid-cooled motor. A sealing cover is arranged on each side of a stator core (2) respectively; the two sealing covers are of annular structures; the two sealing covers, the inner wall of a motor shell (1) and a side face of the stator core (2) form a closed space together; the two sealing covers are communicated through a plurality of grooves (14) in an outer annular wall of the stator core (2) or the inner wall of the motor shell or a liquid transport pipe (10); the motor shell (1) is provided with a plurality of communicating holes (15); the two sealing covers are connected with the liquid transport pipe (10) and a liquid storage tank (11) through the communicating holes (15); and the two sealing covers, the motor shell (1), the liquid transport pipe (10), a radiator (9), a pump (8) and the liquid storage tank (11) form a liquid circulation loop. The invention aims to overcome the defects of integral oil immersed, oil injection and oil flow type cooling methods in the prior art, and provides a liquid-cooled motor structure which has the advantages of excellent cooling effect, small thermal resistance and low cost.

The invention relates to an automatic temperature control device of a large cooling tower group which comprises a plurality of blowers. The high temperature cooling water of a high temperature working machine is cooled by running through the blower and imported into a cold water pool to save, and the water is pumped to the high temperature working machine from the cold water pool to achieve the recycling of the cooling water, one of the plurality of the blowers is selected as a main blower, the others are the assistant blowers, the main contactors of the blower motor are connected in parallel and connected with a soft starter which is connected with and controlled by a programmable controller, a temperature sensor is arranged into the cold water pool, the signal of the temperature sensor is output to a PID digital regulator which inputs the signal to the programmable controller and a converter which is connected with the main blower, the assistant blowers are connected with the soft starter and a working frequency power supply, and the programmable controller accomplishes the conversion and the control. The device has the advantages of convenient control, gentle start and stop, economical and practical properties, and environmental protection and the device can also save power by more than 30 percent.

The invention provides a motor air cooling structure. An air gap between a stator and a rotor is a wedge-shaped one, a small port of the wedge-shaped air gap is arranged at the low temperature side of the rotor, and a big port of the wedge-shaped air gap is arranged at the high temperature side of the rotor. By adopting the motor air cooling structure provided by the invention, the wedge-shaped air gap is formed between the stator and the rotor, cooling temperature uniformity and cooling efficiency of the stator and the rotor are improved, and structure is simple. Besides, the invention provides a horizontal motor with the air cooling structure, and the horizontal motor has higher work efficiency and work stability compared with a motor with an air cooling structure in the prior art.

A salient-pole type linear motor comprises a housing, a stator, a mover and coil units. The stator comprises a middle stator core and two side stator cores which have a plurality of magnetic poles on the inner peripheral surface of the stator. A plurality of coil units is wound around the plurality of magnetic poles. By generating a current that passes through the coil units sequentially, magnetic fields are produced about the magnetic poles and an attractive force is produced to enable a reciprocal motion of the mover by magnetic attraction. The salient-pole type linear motor further connects two compressor cylinders at both ends thereof for compressing gases or draining fluids so as to form a reciprocal double piston compressor with a salient-pole type linear motor.

The invention discloses a low-temperature enrichment and thermal desorption integrated cold trap for trace volatile organic compounds. The cold trap is characterized by comprising a refrigeration system, a gas sample dehumidification system, a cold trap enrichment system and a thermal desorption system. A sample water vapor dehumidification trap and a trapping trap are integrally designed, so thatthe size and the cost are reduced. The cold trap is small in design size, free of refrigerant consumption, capable of continuously working for a long time, capable of being used as a pretreatment device for in-situ continuous monitoring and wide in application range.

The invention belongs to the technical field of agricultural machines, and relates to an automatic profiling hay mower suitable for the terrain of an orchard. The hay mower is provided with a mowing table, a flexible mechanism is applied to the mowing table, and through active telescopic mechanisms installed inside the mowing table, stretching and retracting are conducted to realize the operationeffects of angle adjustment and profiling hay mowing. A crawler belt type chassis is used, so that the automatic profiling hay mower has good adaptability to the terrain of the orchard. The mowing table is placed in front of a carrier tool and conducts three-point suspending connection, and the height of the mowing table can be adjusted according to the active telescopic mechanisms arranged on thecarrier tool. The flexible mechanism installed inside the mowing table and the telescopic mechanisms installed at two ends are used for adjusting the angle of a mowing knife to realize the optimal sliding cutting angle. An internal cereal crop divider is used for guiding weed to be within the movement range of the cutter, so that mowing missing is reduced and mowing quality is improved. A cerealcrop supporting device is installed, so that the minimum critical rotation speed of the mowing knife is decreased during cereal crop supporting, and meanwhile the knife is protected. A laser scanningradar is installed to obtain real-time terrain information to obtain the optimal mowing route and the optimal cutting scheme.

The invention discloses a construction method of a warm mix asphalt concrete pavement of a municipal road. The construction method comprises the following steps: 1, reforming and adjusting the traditional mixing equipment; 2, determining the construction temperature of a warm mix mixture; 3, mixing the mixture; 4, transporting the warm mix mixture to the construction position; 5, paving the warm mix mixture; 6, compacting the paved warm mix asphalt mixture. Compared with the prior art, the construction method has the beneficial effects that the mixing cost and production consumption of the asphalt mixture are lowered, the ageing is alleviated, the pavement performance is improved, the emissions of harmful gas and dust are reduced, the environmental pollution is lowered, and the working environment quality of a worker is improved.

The invention provides an active mass magnetic activation vibration controlling device which comprises a mass block and a control unit, wherein a DC exciting coil is arranged at the bottom portion ofthe mass block as the secondary coil of the linear motor, a sliding rail bed is arranged beneath the mass block, a long stator winding is arranged in the sliding rail bed as the primary coil of the linear motor. The advantages of the invention are sensitive reaction, simple structure, low noise and high degree of precision.

The invention relates to a constant magnetic separator which can remove steel pieces included in materials from a conveying belt of scattering solid non-magnetic materials, and a method for detecting iron pieces by using the constant magnetic separator adopting a magneto sensor group. A plurality of magneto sensors are arranged between the magnetic poles of the constant magnet of the constant magnetic separator. The output of the magneto sensors is connected with a signal amplifying circuit which is connected with a comparison control circuit. After being operated by the comparison control circuit, the output is connected with a sheet iron removing belt running a power supply to control the sheet iron removing belt to rotate. The control relation of a plurality of detecting circuits formed by a plurality of magneto sensors is logic control, and the magneto sensors are hall sensors. The invention can automatically detect that whether any iron piece is sucked up by the magnet with simple setting and easy operation. The sheet iron removing belt is not needed to continuously run for a long time, and only when the iron piece is sucked up, the sheet iron removing belt runs. The electrical energy is saved, the mechanical wastage is little and the service life of the iron removing device can be prolonged.

The invention relates to a direct connecting flame proof oilless vortex vacuum compressor. The technical problem to be solved by the invention is to provide a motor and a compressor which have higher concentricity, small shake and lower low noise, further increase the compressive efficiency and reduce the mechanical loss. The reasonable and effective thermal design causes that the compressor and the motor both have good heat dissipation and ensure a machine to work normally. The semi-closed or the total closed structural design realizes the no leakage of the flame proof oilless vortex vacuum compressor. The technical proposal to solve the problem is that a main shaft is connected with a driving disk by a needle bearing and provided with a shaft gland before extending a motor shell; a flame proof plate is arranged between a machine frame and the motor shell and a non-magnetic metal thin wall separation sleeve is fixed in a sealing way between the flame proof plate and the bottom of the motor shell; a stator, the machine frame, the flame proof plate and the motor shell form a heat dissipation system which are mutually communicated. The vacuum compress is applied to the application field of low compression ratio flammable and explosive gas compression and evacuation.

A circular track magnetic levitation vehicle energy storage system comprises a track (10), a vehicle (20), a current conversion device (30) and a track wall (5). Vehicle-mounted permanent magnet blocks (1) and a vehicle drive magnetic pole (2) are fixed to the vehicle (20); and a track drive coil (3) and track permanent magnet blocks (4) are fixed to the track (10). When the circular track magnetic levitation vehicle energy storage system needs to store energy, the current conversion device (30) absorbs energy from a power grid, a moor system composed of the vehicle drive magnetic pole (2) andthe track drive coil (3) drives the vehicle (20) to rotate at an accelerated speed, and the stored kinetic energy is increased; and when the circular track magnetic levitation vehicle energy storagesystem needs to release the energy, the motor system works in an electric generator state, and generated electric energy is fed back to the power grid through the current conversion device (30). Levitation and guidance of the vehicle (20) are achieved through the vehicle-mounted permanent magnet blocks (1) and the track permanent magnet blocks (4), and friction between the vehicle (20) and the track (10) is reduced.

The invention relates to an NdCa4O(BO3)3 crystal zero frequency temperature coefficient cut and application. A crystal rotates with an alpha angle and is recorded as (ZXw) alpha, wherein alpha is no less than 20 degrees below zero and no more than 45 degrees; and the dimensional proportion of the cut is shown that thickness:width:length=1:(2-3):(6-10). Platinum electrode is plated on an NdCa4O(BO3)3 crystal cut in the width direction with the electrode thickness of 200-220nm; and by adopting a mode of width shearing vibration, the temperature stability of a crystal resonant frequency is controlled to be 0-25ppm/DEG C within a range from 140 DEG C below zero to 200 DEG C. The invention solves the problems of lower electromechanical coupling coefficient (smaller than 8 percent) of quartz crystals as well as stable crystal frequency and narrower range of crystals of lithium tantalate, lanthanum galium silicate single and the like and is suitable for manufacturing a frequency controller used in a wide temperature range.

The invention discloses a method for preventing camera idling and a terminal. The method for preventing the camera idling includes that receiving a camera rotating command, and starting a camera to rotate in a single direction in a uniform speed; acquiring Hall values from a digital Hall sensor on the terminal according to a fixed time interval, and calculating the difference between the current acquired Hall value and the previous acquired Hall value; if the continuous times of the phenomenon that the difference between the current acquired Hall value and the previous acquired Hall value is less than or equal to a first preset value arrives at preset lasting times, stopping the rotation of the camera. The method for preventing the camera idling is capable of preventing the camera idling, the electrical resource of the terminal is saved, the mechanical loss of an electric motor in the rotating camera is reduced, and accordingly the service life of the rotating function of the rotating camera is increased.

The invention relates to a special direct-current frequency converting control system for a washing machine. The system is connected between an upper computer and a direct-current motor of the washing machine and comprises a power supply converting module, an MCU (Micro-programmed Control Unit) control module and an RS232 serial port communication module, wherein the RS232 serial port communication module and the power supply converting module are both connected with the upper computer; the MCU control module is respectively connected with the power supply converting module and the RS232 serial port communication module; the system also comprises a Hall sensing module, an intelligent power driving module and a current detection and feedback module; and the Hall sensing module, the intelligent power driving module and the current detection and feedback module are respectively connected with the MCU control module, the power supply converting module and the direct-current motor. Compared with the prior art, the special direct-current frequency converting control system has the advantages of high response speed, high rotation speed adjusting precision, low energy consumption and the like.