30results about How to "Solve the disadvantages of fragile" patented technology

The invention discloses a control circuit of a variable frequency air conditioner. The control circuit of the variable frequency air conditioner comprises an outdoor power supply control loop, an outdoor unit power failure detection circuit, an outdoor unit charging control circuit and a temperature collecting circuit. The outdoor power supply control loop is used for controlling an outdoor unit to be powered on or powered off according to an external control signal. The outdoor unit power failure detection circuit is used for detecting whether a power failure of an outdoor unit power supply circuit is caused or not. The outdoor unit charging control circuit is used for charging a filter capacitor of the outdoor unit. The temperature collecting circuit is used for collecting the temperature of a coiler of an outdoor unit heat exchanger, the outdoor environment temperature and the temperature of a coiler of an indoor unit heat exchanger and outputting collected analog signals. The control circuit of the variable frequency air conditioner has the advantages that an outdoor unit power failure can be detected, the outdoor unit can be controlled to be powered on or powered off, the stand-by time is shortened, energy is saved, and the work stability of the air conditioner is improved.

The invention discloses an ultra-deep vertical shaft high-load spiral winding friction hoisting system and method. The ultra-deep vertical shaft high-load spiral winding friction hoisting system comprises two movable motors, two bearing pedestals horizontally moving along the axes of transmission bearing pedestals with spiral grooves, the two fixedly-installed transmission bearing pedestals with the spiral grooves, a spiral friction roller matched with the two transmission bearing pedestals with the spiral grooves, and a plurality of sections of hoisting steel wire ropes wound on a groove of the spiral friction roller. The two motors drive the spiral friction roller to rotate through a speed reducer, the spiral friction roller is supported by the bearing pedestals on the two sides of a rotary friction roller, the steel wire ropes wound on the spiral friction roller are wound and hoisted along the groove of the spiral friction roller through the friction force between the steel wire ropes and the spiral friction roller, the four sections of steel wire ropes are lifted or placed down at the same time, and the spiral friction roller makes axial movement along the transmission bearingpedestals with the spiral grooves while the steel wire ropes are hoisted. The defects that when a friction hoisting mode is adopted in an ultra-deep vertical shaft, the stress value of the junction ofsteel wire ropes and a container fluctuates largely, and when a winding hoisting mode is adopted, the steel wire ropes are prone to being damaged and broken as being wound around a roller too much are overcome.

The invention discloses a brushless DC (direct current) motor air conditioning system control circuit comprising a microcontroller U4, an indoor DC fan motor rotational speed control circuit, an outdoor DC fan rotational motor rotational speed control circuit, an outdoor DC motor fixed rotational speed and adjustable rotational speed switching circuit, an indoor motor speed regulation voltage shutdown circuit, an outdoor motor speed regulation voltage shutdown circuit and a temperature detection circuit, wherein the outdoor DC fan motor rotational speed control circuit comprises a first circuit unit and a second circuit unit; the circuit board of the brushless DC (direct current) motor air conditioning system control circuit consists of an outdoor control panel and an indoor control panel; and the outdoor control panel and the indoor control panel are connected through plug connectors CN2 and CN4. The brushless DC (direct current) motor air conditioning system control circuit can perform speed regulation control on the indoor and outdoor fan motors at random to achieve a good heating effect, and match the outdoor motor fixed rotational speed control and closed loop speed regulation control at random so as to improve the development convenience of products.

The invention relates to a manufacturing method of plastic bottles. Firstly, preforms are arranged inside a preheating device for preheating. Pre-heated preforms are conveyed into matched molds through a conveyance rack. A blow molding device is arranged on the matched molds. The blow molding device is injected into the preforms by using high pressure gas to make plastic bottles. A handle conveyoris arranged beside the conveyance rack, which feeds handles into corresponding clamping positions on the fringe of the cavity of the matched molds automatically. During blowing, the wall of the preforms expands and is bonded to the handles arranged at the fringe of the cavity of the molds. The invention also discloses an equipment to achieve the manufacturing method, which comprises a preheatingdevice, a clamp device and a blow molding device. A preform conveyance rack is arranged between the clamp device and the preheating device. A handle conveyance device is arranged beside the conveyancerack. The invention improves the production efficiency of plastic bottles and is used safely and reliably.

The invention discloses a two-step molding method for a stationary disc of an air conditioner compressor of a new energy automobile. The method is characterized by comprising the steps that after a blank is obtained by blanking and is treated, firstly, the blank is placed in a preforging mold for preforging blank making, so that the blank is molded into a workblank with a preforging outer ring of the preset height; and then, the workblank is placed into a finish forging mold, and the stationary disc is extrusion-molded through backpressure. According to the two-step molding method, the prefabricated blank obtained through preforging is provided with the preforging outer ring of a certain height, the guiding effect of the preforging outer ring is effectively utilized in the finish forging molding process, and flowing speed of metal of the outer ring is effectively increased; it is guaranteed that when molding is ended, the height and flatness of the outer ring meet requirements; and by means of the method, the service life of the mold is prolonged, part molding precision is high, and strength is high.

The invention discloses a motor speed regulating voltage Vsp cut-off circuit of an air conditioning system of a brushless motor. The cut-off circuit comprises an indoor motor speed regulating voltage cut-off circuit and an outdoor motor speed regulating voltage cut-off circuit, wherein the indoor motor speed regulating voltage cut-off circuit comprises a first partial voltage shaping circuit, a first direct-current voltage detection circuit and a Vsp1 voltage cut-off circuit; and the outdoor motor speed regulating voltage cut-off circuit comprises a second partial voltage shaping circuit, a second direct-current voltage detection circuit and a Vsp2 voltage cut-off circuit. The cut-off circuit disclosed by the invention has the advantages that indoor and outdoor fan motors are prevented from being damaged when power failure occurs, the operational safety and reliability of the motor is improved, and the like.

The invention discloses an outdoor motor control circuit of an air conditioning system of a brushless motor. The outdoor motor control circuit comprises a microcontroller U4, a rotary speed control circuit of an outdoor DC (direct current) fan motor, a fixed rotary speed and adjustable rotary speed switching circuit of an outdoor DC motor and a speed adjusting voltage cut-off circuit of the outdoor motor and a temperature detecting circuit. The rotary speed control circuit of the outdoor DC fan motor comprises a first circuit unit and a second circuit unit, wherein the first circuit unit comprises a plug connecting component CN2; the second circuit unit comprises a plug connecting component CN4; and the first circuit unit is connected with the second circuit unit through the plug connecting components CN2 and CN4. The outdoor motor control circuit disclosed by the invention has the advantages of being capable of randomly regulating and controlling the speed of the outdoor fan motor so as to obtain a better heating effect, and performing random collocation on the fixed rotary speed control and the loop-closed speed adjusting control of the outdoor motor so as to improve the convenience of product development, and the like.

The invention discloses an outdoor unit control circuit of a variable frequency air conditioner. The outdoor unit control circuit of the variable frequency air conditioner comprises an outdoor power supply control loop, an outdoor unit power failure detection circuit, an outdoor unit charging control circuit and an outdoor environment and coiler temperature collecting circuit. The outdoor power supply control loop is used for controlling an outdoor unit to be powered on or powered off according to an external control signal. The outdoor unit power failure detection circuit is used for detecting whether a power failure of an outdoor unit power supply circuit is caused or not. The outdoor unit charging control circuit is used for charging a filter capacitor of the outdoor unit. The temperature collecting circuit is used for collecting the temperature of a coiler of an outdoor unit heat exchanger and the temperature of an outdoor environment and outputting collected analog signals. The outdoor unit control circuit of the variable frequency air conditioner has the advantages that an outdoor unit power failure can be detected, the outdoor unit can be controlled to be powered on or powered off, the stand-by time is shortened, energy is saved, and the work stability of the air conditioner is improved.

The invention discloses an air-resistance type rope guide for guiding large steel rope of a boring winch. The air-resistance type rope guide is characterized in that a left rope support wheel and a right rope support wheel are sheathed on a left rope support wheel axle and a right rope support wheel axle, and sandwich a steel rope; a left piston and a right piston cannot move freely under the resistance of compressed air, so that the force applied to the left piston and the right piston by the compressed air is transferred to the left rope support wheel and the right rope support wheel to enable the rope support wheels to be arranged on a drum in sequence so as to prevent the steel rope on the drum from tangling. When the pressure providing compressed air pressure becomes larger in the field and cannot push the left piston and the right piston of the rope guider to move left and right stably along with the steel rope while winding and unwinding the steel rope below the weight of an empty runner wagon, the pressure can be lowered by adjusting a relief valve in front of an air inlet pipe of an air tank to ensure to bear against the left piston and the right piston of the rope guider to move stably while the winding and unwinding the wire rope on the drum below the weight of the empty runner wagon. In order to ensure the use safety and the service life, a gas-water separator, an atomized lubricator and the like are required below the air tank.

The invention discloses a control method for artificial limb knee and ankle joints and relates to artificial limb knee joints. The control method includes the steps that firstly, the positions, on which Hall sensors are to be installed, on an artificial limb knee joint are determined through a test, the three Hall sensors are installed, a controller is installed in a groove in the rear cover of the artificial limb knee joint, and different gaits are judged and identified by the controller according to signal variation of the three Hall sensors; secondly, according to identification of the gaits in the first step, the controller judges different gaits according to the signal variation of the Hall sensors and controls a knee joint motor and an ankle joint motor to move up and down according to different gaits, different damping is generated according to different gaits and different step speeds, and therefore control of the gaits is achieved and coordination of the knee and the ankle is achieved. The defects that intelligent artificial limbs are not coordinate in gait and are prone to damage and energy consumption of wearers is large in the prior art are overcome.

The invention aims to provide a traffic flow and occupation ratio information acquisition method based on road surface image feature identification. According to the method, a low-illumination DSP camera (standard definition or high definition) is used as an acquisition and arithmetic device for acquiring an image frame by frame, wherein the camera is erected above a road surface and acquires road surface feature change information of a monitored area in real time, and the acquired image is processed through a high-speed processor of the camera; according to road surface image features, a BP neural network identification method is designed to conduct real-time identification, and the transportation traffic flow, the average velocity of vehicles, the time occupation ratio of the vehicles and other main parameters are acquired by identifying the conditions of the road surface image features blocked by and covered with the vehicles. The traffic flow and occupation ratio information acquisition method is used for accurately acquiring vehicle travel information on a road in real time, and can reduce overall delay of transportation and improve transportation service when used as input of a traffic signal control and traffic guidance control system,.