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114results about How to "Smooth parking" patented technology

Molten iron tank alignment tractor below blast furnace

The invention relates to a molten iron tank alignment tractor below a blast furnace. The molten iron tank alignment tractor comprises a tractor body controlled by a tractor master control system. The tractor master control system is provided with a master control module and is in wireless communication connection with an outer remote control unit through a remote control signal receiver. A rotary encoder is installed on an output shaft of a speed reducer of the molten iron tank alignment tractor and connected with a tractor alignment control system. The tractor alignment control system at least comprises a single-chip microcomputer, a key circuit, a display module and a communication module. The communication module is additionally in communication connection with the tractor master control system and a blast furnace casting control system. The molten iron tank alignment tractor can replace an internal combustion locomotive to finish molten iron tank alignment operation, remote alignment is completed through remote control, operation is convenient, alignment is accurate and reliable, efficiency is high, and mis-operation and molten iron splashing can be prevented. Equipment operation and the automatic charging process are both remotely controlled, the man-machine contact frequency is greatly reduced, and the safety accident rate is reduced. A breakthrough is made in blast furnace casting alignment operation.
Owner:鞍钢集团(鞍山)铁路运输设备制造有限公司

Self-learning-based rotation control method for dangerous condition of tower crane

The invention discloses a self-learning-based rotation control method for a dangerous condition of a tower crane. The self-learning-based rotation control method particularly comprises the following steps of: 1, carrying out self-learning on the inertia and a rotation running characteristic of the tower crane on the tower crane; 2, carrying out deceleration or shutoff control as appropriate according to the current running state of the tower crane; 3, after low-speed cut-off control of the tower crane, executing closed-loop control, if the dangerous angle of the tower crane at the time is more than an ideal parking position, re-starting low speed in a control direction of the tower crane by a system, allowing the tower crane to continuously advance at a low speed to be close to a target position; and 4, immediately braking when the tower crane enters a red line due to out of control, directly stopping the tower crane, delaying a brake for a certain time, then opening the brake and allowing the tower crane to rotate towards a safety direction. According to the self-learning-based rotation control method, the rotation of the tower crane is passively controlled, the parking regulation and braking control are carried out to ensure the parking stability, and the impaction of the rotation inertia of the tower crane is avoided.
Owner:XIAN MAPLE TREE ELECTRONICSAL TECH DEV

Double-side grinding and polishing machine

InactiveCN106425830ASmall grinding resistanceImprove grinding productivityLapping machinesWork carriersMechanical engineeringSilicon
The invention discloses a double-side grinding and polishing machine. The double-side grinding and polishing machine comprises an upper disc. A lower disc (1) is arranged under the upper disc. The upper disc and the lower disc (1) are driven by different motors and are opposite in rotation direction. An inner gear ring (2) is arranged at the outer edge side of the lower disc (1), and a sun gear (3) is arranged in the middle of the lower disc (1). Planet gears (4) serving as tools and clamps are placed on the lower disc (1). The two sides of each planet gear (4) are engaged with the inner gear ring (2) and the sun gear (3) correspondingly; and the inner gear ring (2) and the sun gear (3) are driven by different motors, and therefore the planet gears (4) can rotate and can also revolve around the sun gear (3) under the action of the inner gear ring (2) and the sun gear (3). By means of the double-side grinding and polishing machine, workpieces can form grinding motion with the speeds coordinated with one another in three or more directions in a carrier; the two sides are ground uniformly; resistance is small; efficiency is high; the workpieces are not damaged; and the double-side grinding and polishing machine is applicable to grinding and polishing of silicon wafers, sapphire substrates and epitaxial wafers.
Owner:YIXING JINGKE OPTICAL INSTR

Device for separating mud and water depending on high-frequency small-amplitude mechanical vibration

The invention provides a mud water separation device which mechanically vibrates with small amplitude by high frequency, belonging to the technical field of hydraulic engineering; wherein, the frame of a vibration motor is arranged on a mud water separation chamber and taken as a vibration source; a spring is arranged and connected between the vibration motor and the mud water separation chamber; a bracket is arranged in the mud water separation chamber and used for supporting a vibration ball and a screen; the bracket is divided into a plurality of grids; each grid is internally provided with a plurality of vibration balls which are arranged between the screen and the bracket; the screen is arranged on the vibration ball; a water inlet pipe is arranged on the mud water separation chamber and lower than the bracket; the water outlet pipe is arranged on the mud water separation chamber and higher than the bracket; a water outlet pipe is provided with a water outlet pipe valve; a mud outlet pipe is arranged at the bottom of the mud water separation chamber and provided with a mud outlet pipe valve; alternatively, the mud water separation device of the invention can save the water inlet pipe, the mud outlet pipe and the mud outlet pipe valve. The mud water separation device can separate the mud sand grain from water flow with high efficiency, improves the productivity of the dredge and water disposal industry, and reduces the industrial energy loss.
Owner:SHANGHAI JIAO TONG UNIV

Quick shutdown system and method of industrial sewing machine

The invention relates to a quick shutdown system and method of an industrial sewing machine. The system comprises a central processing unit, a bridge rectifier circuit composed of six switching tubes and a DC brushless electric machine used for controlling the operation of the industrial sewing machine, wherein the input end of the bridge rectifier circuit is connected with a system power supply; the triple outputs of the bridge rectifier circuit are connected with the three-phase winding of the DC brushless electric machine in turn; the control ends of the switching tubes are separately connected with the six-way PWM control signals of the central processing unit; an optical-electricity encoder and a position sensor which are arranged on the DC brushless electric machine and the pin signal and pedal signal of the industrial sewing machine are separately connected with the central processing unit; and the central processing unit continuously collects the motor speed, calculates the PWM duty ratio of six-way drive waveform and controls the on / off state of the three switching tubes of the middle and lower bridge arms of the bridge rectifier circuit, thus realizing quick shutdown. By using the system of the invention, the shutdown time of the industrial sewing machine can be greatly shortened, the production efficiency can be increased, the shutdown process is stable without causing motor vibration, and the reliability is good.
Owner:YIWU HUACHEN ELECTROMECHANICAL CO LTD

Electric parking brake (EPB) control method for electric car

The invention relates to the field of vehicle automatic control and in particular relates to a parking brake control method. An electric parking brake (EPB) control method for an electric car is characterized by carrying out following control after setting the delay time: from a driving state to a parking brake lock state, firstly carrying out lock operation on a vehicle by using an EPB system, waiting for the delay time and then sending a parking brake signal to an electric parking pawl (EPP) system by a vehicle control unit to carry out lock operation on the vehicle; and from the parking brake lock state to the driving state, firstly controlling the EPP system to be unlocked by the vehicle control unit after a brake pedal is depressed, waiting for the delay time and then unlocking the EPB system. The method has the beneficial effects that the reliability of the EPP system is improved by starting the EPB and EPP systems in sequence, thus avoiding seizure of the EPP system under the full load condition or the long ramp condition and eliminating abnormal sounds produced by parking on the short ramp and unlocking under the full load condition; and meanwhile, parking and unlocking can be smoothly carried out under the long ramp condition, thus improving the reliability of vehicle control.
Owner:SAIC MOTOR

Three-force point side-positioned drum type clearance independent spacing self-regulating instantaneous centre brake

InactiveCN101240826AWiden the free gapHigh precisionSlack adjustersHorizontal axisEngineering
The present invention belongs to a three-force side shoe drum type clearance independence spacing self regulating instantaneous center brake for auto wheel. The characteristics of the invention is the bearing hole of the braking base plate fixes upper, lower supporting shoe pin roll, mutually symmetrical and locating on the two sides of the horizontal axis, the upper and the lower supporting hoof pin roll are packed with an upper and lower brake shoes, the upper and lower bearing holes of the upper and lower brake shoes are set with the upper and lower ratchet wheel coupling double working surfaces cams; the horizontal axis of the braking base board has a camshaft, the upper and lower bearing shoe pin roll and the camshaft form polarization braking center triangle; the upper and lower positioning pawl pin rolls are set on the extending part of the upper and lower braking shoes, the upper and lower locating pawl bearing hole is set on the braking plate, the claw is connected to the ratchet tooth. The invnetion acquires small abrasion of the brake braking working surface, having no noise, realizing optimal braking time, optimal braking deceleration, optimal braking distance, maximum force value and optimal force balancing effect, ensuring auto operating safety.
Owner:崔忠民

Method for aligning iron discharged from blast furnace and molten iron tanks below blast furnace

The invention relates to a method for aligning iron discharged from a blast furnace and molten iron tanks below the blast furnace. In the process of iron discharging of the blast furnace, an overturning funnel and molten iron tank aligning tractors are in interlocking control, the molten iron tank aligning tractors are remotely controlled by a remote controller, and a rotary encoder is arranged on an output shaft of a speed reducer of each molten iron tank aligning tractor and connected with a tractor aligning control system; during aligning of the molten iron tanks, moving distance of the molten iron tank aligning tractors is calculated according to rotation turns of wheels, and current tank position and tank number information is updated automatically, transmitted into a blast furnace iron discharging control chamber and displayed on an operating panel of the tractor aligning control system. The molten iron tank aligning tractors are adopted to replace an internal combustion locomotive to complete aligning work of the molten iron tanks below the blast furnace, remote aligning is completed through remote control, the molten iron aligning tractors can be controlled by one remote controller, moving of the molten iron tank aligning tractors in the process of iron discharging due to misoperation can be prevented, and equipment and human safety during iron discharging is ensured.
Owner:鞍钢集团(鞍山)铁路运输设备制造有限公司

Phosphor block belt conveyor capable of performing curved running and curved operation

The invention belongs to the technical field of underground coal mine transportation facilities and particularly relates to a phosphor block belt conveyor capable of performing curved running and curved operation. The problem that an existing transportation device strictly restricts the efficiency of a united coal mining machine is solved. The phosphor block belt conveyor comprises a movable dragging assembly, a rubber belt, a round-link chain fixing the rubber belt, an rubber belt supporting structure and a rubber belt driving device, wherein the movable dragging assembly comprises a driving gun carrier and a plurality of common gun carriers which are sequentially hinged, hinge seats for hinge include one-degree-of-freedom hinge seats and three-degrees-of-freedom hinge seats which are consistent in length and width size, the driving gun carrier and the common gun carriers are two-wheeled vehicles, are consistent in length and width size and have the mass centers located at the centers of corresponding gun carrier frames, a wheel axle and wheels are installed in the middles of two sides of each gun carrier frame, and the distances from the centers of the wheel axles to the centers of the front and rear hinge seats are equal. The movable dragging assembly of the phosphor block belt conveyor capable of performing curved running and curved operation can be organically assembled and can be configured according to different road conditions and transfer requirements, electricity is saved, stable starting is also achieved, the driving gun carrier is independently braked and controlled in a centralized mode, and parking is stable.
Owner:原平市丰汇机械制造有限公司

A compact type fully hydraulic walking pile-up valve

The invention provides a compact type fully hydraulic walking pile-up valve comprising a valve body. The valve body is internally provided with a high pressure selector valve formed by combining a threaded check valve base, a steel ball and a valve hole in the valve body. A first one-way throttle valve is arranged in the valve body and on the left side of the high pressure selector valve and a second one-way throttle valve is arranged in the valve body and on the right side of the high pressure selector valve. A balance valve is installed in a balance valve cavity of the valve body. A two-stage buffer overload valve comprising a first buffer overload valve and a second buffer overload valve is arranged on a main oil way in the valve body. A large-opening diameter oil supplementing valve formed by combining two sets of planar large-drift diameter check valves is installed in a valve cavity in the valve body and above the balance valve. An oil path switching valve is installed in the uppermost switching valve cavity of the valve body. The compact type fully hydraulic walking pile-up valve can effectively solve the problems such as great hydraulic shock, air suction of oil liquid and high noise in a braking process of fully hydraulic wheel excavators and loaders, has the advantages of compact structure, small size and high integration degree and is especially suitable for moving apparatuses.
Owner:浙江宏盛精密机械有限公司

Network type all-digital motor soft starter

The invention relates to a network type all-digital motor soft starter which is characterized in that a control module structure combining a micro-programmed control unit (MCU) and a complex programmable logic device (CPLD) is adopted and is respectively connected with a voltage detection module, a current detection module, a trigger driving module, a keyboard display module and a network communication module so as to form the network type all-digital motor soft starter. The network type all-digital motor soft starter leads a voltage signal and a current signal to be converted into a digital signal and a logic signal so as to realize the functions of all-digital phase compensation, digital phase shift (with the phase shift accuracy of 0.05 degree), phase loss protection, automatic detection of phase sequence, overload protection, wide pulse or double-narrow-pulse trigger and the like, and ensures a motor to be more stably and reliably started and stopped, thus protecting a power grid, the motor and load equipment. Furthermore, the network communication module can be used for networking, so that remote monitoring can be realized. A circuit is simple in structure, high in integration level, phase control accuracy and reliability, good in stability and high in cost performance.
Owner:鞍山市权晟电子电力有限公司
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