40results about How to "Fast reversing speed" patented technology

The invention relates to an electro-hydraulic servo cylinder, comprising a four-edge sliding valve whose base is mounted with a valve element moving left and right. The valve base is fixed on the cylinder whose piston rod is fixed with the frame; the cylinder is connected with the load. The left driving chamber via tube is communicated with the left working chamber, while the right driving chamber via tube is communicated with the right working chamber; one end of valve element is engaged with the dial block mounted on the straight motion output element of straight motion output device. The digit-control machine with said electro-hydraulic servo cylinder comprises a first axle servo driving system, a second axle servo driving system, a third axle servo driving system and a digit-control system, wherein, the second driving system comprises a straight load axle. The invention has high accuracy, quick steering speed, and stable property, which combines the digit control technique with the electro-hydraulic servo motion, with high accuracy in large power.

The invention provides a four-wheel type indoor mobile robot, and relates to a robot. The four-wheel type indoor mobile robot comprises a chassis, two driving wheels, two universal wheels, a controller and a lithium battery. The two driving wheels are two independent driving wheels adopting a wheel hub type DC brushless motor with a Hall effect sensor to act as a driving motor. The driving wheels and the driving motors are integrated. The controller adopts a full-bridge PWMDC/DC converter working in a bipolar mode to drive the DC brushless motors so that disadvantages in the prior art that DC brush motors are slow in commutation speed and high in noise, and the motors are liable to be damaged when the motors are in a wear and tear state for a long time can be overcome.

The invention discloses a swing mechanism. The swing mechanism is used for driving a distributing valve of a concrete pumping device to swing and comprises a swing arm for driving the distributing valve and two hydraulic oil cylinders for driving the swing arm to swing from side to side. Ends of the two hydraulic oil cylinders are respectively connected with the left side and the right side of the swing arm, and the hydraulic oil cylinders are two-stage hydraulic oil cylinders. The invention further discloses the concrete pumping device comprising the swing mechanism. According to the swing mechanism and the concrete pumping device with the swing mechanism, the reversing speed is quick, impact is small, reversing time of the swing mechanism is close to reversing time of a main oil cylinder of the concrete pumping device, and pumping continuity is greatly improved.

The invention relates to a dual-motor coordination control electric wheelchair control device, and relates to a motor driving wheelchair; the electric wheelchair control device comprises a controller, a manual operator, a storage battery and motors; a connecting mode of the parts are that one end of the manual operator is connected with the controller through a relay, and the other end of the manual operator is connected with the storage battery; the controller and the manual operator communicate through CAN; an output end of the controller is connected with the motors; the storage battery provides power for the controller, the manual operator and the motors; the brushless DC motors are employed, a double-wheel coordination differential velocity control method is used, and a feedback compensation mode enables the wheelchair to keep left and right wheels in synchronization in operation, so the wheelchair is stable in motion, thus solving the problems in the prior art that a brush DC motor is slow in commutation speed, large in noise, and the motor is easy to be damaged in long term wearing state of the motor, and solving the disadvantages in the prior art that a conventional electric wheelchair is unstable in motion process and left and right wheel driving are not in synchronization.

The invention discloses a controller for reversing of a series motor of a series electric vehicle, and relates to a controller for achieving reversing of a series motor. The controller controls conduction sequences of an MOS (metal oxide semiconductor) tube to substitute for a contactor to achieve reversing of the series motor, and comprises a hardware part and a software part, the hardware part is composed of a power circuit and a driving circuit, and the software part comprises a controller program, a regenerative feedback program and a flux-weakening speed regulating program. The controller overcomes the defects of low reversing speed of the contactor, loud noise and overlarge energy consumption due to long-time through large current.

The invention discloses a method of acquiring magnetic field driving force and residue power, a magnetic power machine, a magnetic press machine and the like. Magnetomotive force is used for setting the magnetic power machine and the magnetic press machine, and magnetic discs of fixed driving mechanisms and magnetic discs of motion driving mechanisms are arranged in a front parallelism mode. Polarities of one ends of magnetic fields between the center magnetic disc and the magnetic disc of two outer ends are same, and polarities of the other ends are different and corresponding. Magnetic field polarity changing servosystem is used for driving the controlled magnetic discs to conduct the above magnetic field polarity status switching, and driving the motion driving mechanisms to move repeatedly to work to produce driving force or pressure, and work is larger than energy consumption such as magnetic field polarity changing to have residue power. The driving force can be used as power source or used for changing into electrical energy and heat energy, and the problems that existing energy consumption power devices have high energy consumption cost and pollute environment are solved. Compared with the prior art, the method of acquiring the magnetic field driving force and the residue power, the magnetic power machine and the magnetic press machine have the advantages of being high in magnetic energy efficiency use ratio, stronger in driving force, high in residue power rate, low in unit energy acquiring cost, strong in application, and extensive in uses and the like.

The invention relates to a novel solenoid valve connected by a screw insert. The novel solenoid valve connected by the screw insert comprises a socket, a coil, a front cover, a valve body and a rear cover connected in sequence, wherein the front cover comprises a pressing plate and a frame, the frame comprises a coil frame part and a valve body frame part, the connection part between the coil frame part and the valve body frame part is the connection inclined plane, and the pressing plate is connected with the coil frame part; grooves are formed in the connection inclined plane at two positions being corresponding to the centre point, a nut is arranged in the groove, a pressing plate through hole is formed in the pressing plate corresponding to the nut, the front cover bolt is connected with the nut through the pressing plate through hole, and a guide head component is mounted in the front cover; locking through holes are formed in the connection inclined plane at another two positions corresponding to the centre point, screw holes are formed in the valve body corresponding to the locking through holes, and the front cover bolt is used for connecting the front cover to the valve body through the locking through holes. The novel solenoid valve connected by the screw insert is smaller in product size, beautiful, and fast in reversing speed; the power consumption is low, the consumption is saved, the use cost is reduced for meeting national energy conservation and emission reduction requirements.

A thin substrate processing device includes a substrate processing unit configured to process a thin substrate, and a cooling unit configured to cool the thin substrate when the substrate processing unit is processing the thin substrate.

The invention discloses flatten shaping and reversing equipment for soft bag packaging. The equipment comprises a flatten shaping conveying device, an acceleration conveying device and a reversing conveying device which are sequentially arranged according to the conveying direction of soft bags; the reversing conveying device comprises a first conveying mechanism and a reversing mechanism arrangedat the top of the first conveying mechanism; the reversing mechanism comprises a reversing mounting frame, a speed reducing servo motor, a rotating frame and an infrared sensing assembly, wherein thereversing mounting frame is fixed to the first conveying mechanism, the speed reducing servo motor is arranged at the top of the reversing mounting frame, the rotating frame is arranged at the bottomof the speed reducing servo motor and connected to the output end of the speed reducing servo motor; and the rotating frame comprises a rotating base plate and two side baffles arranged on the two sides of the rotating base plate, the two side baffles are arranged in parallel to form a channel for allowing the soft bags to enter the rotating frame and move out of the rotating frame, and the two side baffles drive the soft bags to be reversed during the rotating process of the rotating base plate. The soft bags are subjected to flattening and shaping through the flatten shaping conveying device, so that the specification is unified, and reversing is carried out through the reversing conveying device.

The embodiment of the invention provides a reversing control method and device. The method comprises the following steps: obtaining a sample; a grayscale image of the reversing area is obtained; dividing the grey-scale map into a plurality of pixel units of which the length of any side is greater than the vehicle width; and determining a non-obstacle unit in the plurality of pixel units accordingto a gray threshold, and searching a plurality of non-obstacle units communicated between the starting point unit and the end point unit, thereby generating a reversing path according to a communication relationship of the plurality of non-obstacle units, and controlling the target vehicle to reverse according to the reversing path. Therefore, the image processing equipment can automatically generate the reversing path according to the reversing starting point and the reversing terminal point specified by the user, so that the automobile can automatically complete reversing according to the reversing path, the user operation is simplified in the whole process, and the reversing speed is increased.

The invention discloses a micro-liquid-flow electromagnetic commutator which comprises a bottom plate. The micro-liquid-flow electromagnetic commutator is characterized in that a left traction electromagnet, a right traction electromagnet and a communicator support are sequentially arranged on the upper portion of a base plate from left to right, the bottom plate is provided with a water inlet hole between the left and right traction electromagnets, a branched liquid distribution device and a liquid guide device are arranged above and under the water inlet hole respectively and both communicated with the water inlet hole, and a photoelectric pulse communicator is arranged on the communicator support. By coil power on-off control of the left and right traction electromagnets, commutation ofthe electromagnetic commutator is realized; in a commutation process, the photoelectric pulse communicator is triggered by a light barrier to record commutation actuation time nodes. The micro-liquid-flow electromagnetic commutator has advantages of small size, portability, convenience and quickness in mounting and demounting, structural steadiness, shock resistance, impact resistance, quicknessin commutation action, movability and low environmental requirements of places, energy supply and the like.

The invention relates to a novel DC/AC arc welding device. The DC/AC arc welding device can meet the welding technical requirements and is high in reliability and simple in structure. According to the technical scheme, the novel DC/AC arc welding device is characterized by comprising a low-voltage power supply, a bridge rectifier circuit, a bridge conversion circuit and a conversion control circuit, the output end of the low-voltage power supply is connected with the input end of the bridge rectifier circuit, the output end of the bridge rectifier circuit is connected with the input end of the bridge conversion circuit, the conversion control circuit is connected with the bridge conversion circuit and controls the bridge conversion circuit, and the output end of the conversion control circuit outputs welding current to the outside.

The invention provides a full-bridge circuit and a full-bridge converter. The full-bridge circuit comprises a primary side bridge circuit, a transformer and a secondary side rectifying circuit, the primary side bridge circuit comprises a first primary side bridge circuit and a second primary side bridge circuit which are connected in parallel, and an auxiliary inductor is connected between a lagging arm of the first primary side bridge circuit and a lagging arm of the second primary side bridge circuit. According to the invention, the auxiliary inductor of which the current is not influenced by the load is connected between the two full-bridge circuits connected in parallel, so that soft switching of the lag arm can be realized under the condition of smaller inductance, and the current reversing speed is increased by reducing the inductance so as to solve the problem of duty ratio loss.