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31results about How to "Quick and accurate" patented technology

A control method and control system for automatic shifting of a two-speed transmission of an electric vehicle

The invention provides a control method for automatic gear shifting of an electric vehicle two-gear transmission. The control method includes the steps that after a finished vehicle is normally supplied with power, a gear shifting device is propelled to the forward gear, an accelerator pedal is treaded, a motor controller controls the output of a motor, and a transmission controller detects the rotating speed of the motor and the input quantity of the accelerator pedal. The transmission controller judges whether the finished vehicle meets the gear shifting condition or not according to the rotating speed of the motor and the input percentage of the accelerator pedal, and gear shifting is conducted when the rotating speed of the motor and the input percentage of the accelerator pedal meet the gear shifting condition; if the rotating speed of the motor and the input percentage of the accelerator pedal do not meet the gear shifting condition, the current status is maintained; the transmission controller is in communication with the motor controller, speed regulating and gear shifting begin, and the driving force of the finished vehicle is reduced to be zero; after gear shifting is completed, the finished vehicle recovers the driving force, and the finished vehicle runs continuously. The intention of a driver can be prejudged effectively, and the driving performance of the finished vehicle is good.
Owner:CHONGQING SOKON IND GRP CO LTD

Device for locking traveler of tyre builder

The invention relates to a steel wire ring locking device for the tire building machine, which is characterized in that a slipcover of the sliding flange is sleeved on the main shaft of the boarding drum; the outside of the location platform is fixedly connected with the inner side of the location platform of an annular joint sleeve; a plurality of driving cylinders are evenly distributed on the outside of the joint sleeve; a positioning chuck is fixedly connected with outside edge of the joint sleeve. The cylinder rod of each cylinder passes through the hole of the joint sleeve; a plurality of connecting rods and crank pusher dogs are hinged with the thrusting plate; the turning part of the crank pusher dog is hinged with the transposition of the joint sleeve. The body of the tire tube steel wire ring reaches the location chuck; the driving cylinder simultaneously pushes a plurality of crank pusher dogs of the thrusting plate to swing forth simultaneously; the patulous pressing board lock the steel wire ring tightly on the location chuck. The slipcover of the sliding flange moves inward and takes molding operation. After completion, each cylinder shrinks and drives each crank pusher dog swing inward; the pressing board folds simultaneously and disengages from the steel wire. The slipcover of the sliding flange moves outwards; the steel wire ring separates from the location chuck and the tire can be removed. The invention has the advantages of replacement for the capsule to realize the tightly lock and location of the steel wire ring, high efficiency, better reliability, long service life, few maintenance and favorable quality of the tire.
Owner:GUILIN RUBBER MACHINERY CO LTD

Power transmission line travelling wave protection method considering travelling wave speed characteristic

The invention discloses a power transmission line travelling wave protection method considering travelling wave speed characteristic. The method comprises the steps of acquiring a transient current travelling wave signal at each bus node in a power grid after a fault occurs in a line, and calculating to obtain modulus time difference between initial wavefront which are reached of a zero-mode travelling wave and a line-mode travelling wave of each bus node; taking the bus node with minimum modulus time difference as a key bus node; and determining a fault region according to the key bus node, calculating average modulus ride-through time difference of each circuit in the fault region, determining the circuit with minimum average modulus ride-through time difference as a fault circuit, and performing circuit protection action on the fault circuit. By the travelling wave protection method, two ends of the circuit do not need to be synchronous, the travelling wave protection method is freefrom influence of factors such as a system load, a fault initial phase angle and transition resistance, is high in reliability and accuracy and rapid in action speed and has relatively high economy and relatively high practical value.
Owner:CHINA UNIV OF MINING & TECH

Anti-falling device in guide rail

PendingCN109869027AMechanism and manufacturing are simpleQuick and accurateParkingsFall protectionEngineering
The invention discloses an anti-falling device in a guide rail. The anti-falling device in the guide rail comprises a shell, a top suspender, a bottom suspender and more than two brake pads. The top suspender is arranged on the upper part of the shell and forms a vertical moving pair with the shell, the upper part of the top suspender is used for connecting a pull rope or a pull chain, and the brake pads are arranged on both sides of the shell. The brake pads on both sides of the shell can be moved from the top suspender up and down to the opposite direction on the shell in the horizontal direction at the same time. The horizontal movement of the brake pads is used for squeezing or detaching from the guide rail, and the bottom suspender is arranged at the bottom of the shell and used for connecting a load-bearing disc. The anti-falling device in the guide rail has the beneficial effects that mechanism and manufacture are simple, the action of the brake pad is rapid and accurate, the braking effect is good, reusable use can be achieved, and additionally arranging electrical equipment and cables are not required to perform convenient anti-falling protection on a pulling and drawing system; and according to the anti-falling device in the guide rail, the anti-falling device is installed conveniently and quickly, special structural design and manufacture are not required to be carried out, an existing space is not occupied, and installing and using are carried out at the same time.
Owner:NANJING C HOPE ENVIRONMENTAL SCI & TECH

Continuous knotting test bench for multiple groups of knotters

The invention provides a continuous knotting test bench for multiple groups of knotters. The continuous knotting test bench comprises a rope pulling system I, a rope releasing device II, a knotter main shaft transmission system III, a motor driving system IV, a control system V, a rack VI and a rope bundling pre-tightening force adjusting device VII, the bundling rope pre-tightening force adjusting device VII is used for clamping and tightening a bundling rope, the control system V controls the motor driving system IV to enable a rope needle of the knotter main shaft transmission system III to send the bundling rope to the knotter, and the rope pulling system I enables the bundling rope to form a to-be-knotted rope loop. A motor driving system IV drives a knotter main shaft transmission system III to enable the knotter to complete the knotting action, and a rope releasing device II brushes off a knotted rope ring from a rope pulling system I; the continuous knotting process of multiple groups of knotters under the condition of bale rebound can be simulated, the knotting speed can be controlled by adjusting the rotating speed of the motor driving system, simultaneous continuous knotting of the multiple groups of knotters is automatically realized, the time consumed in the testing process is shortened, the testing efficiency and the knot quality are improved, and the failure rate is reduced.
Owner:JIANGSU UNIV

Device for locking steel traveler of tyre builder

The wire ring locking device of the tire building machine, the sliding flange is set on the main shaft of the shaping drum, the outer positioning platform is fixedly connected with the inner positioning platform of the annular connecting sleeve, and a plurality of driving cylinders are evenly distributed on the outer side of the connecting sleeve, and the outer edge of the connecting sleeve is fixed. Position the chuck. The piston rods of each cylinder pass through the fixed push plate through the hole of the connecting sleeve to hinge a plurality of connecting rods and crank claws, and the turning points of the crank claws are hinged to the swivel seat on the connecting sleeve. After the carcass tube traveler reaches the positioning chuck, the driving cylinder simultaneously pushes the multiple crank claws of the push plate to swing outwards at the same time, and the opened pressure plate locks the traveler on the positioning chuck. The sliding flange sleeve moves inward for forming operations. After completion, each cylinder shrinks to drive each crank claw to swing inwardly, and the pressing plate is closed at the same time to disengage from the traveler. The sliding flange sleeve is moved outward, the traveler is separated from the positioning chuck, and the tire can be unloaded. The device replaces the capsule to realize the locking and positioning of the steel traveler, has high efficiency, strong reliability, long service life, less maintenance, and is beneficial to improve tire quality.
Owner:GUILIN RUBBER MACHINERY CO LTD

Elevator safety level apparatus with multiple startup modes

InactiveCN101462665BAvoid the defect that it is not necessarily facing the floor doorDefects to avoid adverse effects from braking actionElevatorsSafety valveSteel rope
The invention relates to an elevator safety lever device capable of setting various starting modes. The safety lever device comprises safety levers, a lever sleeve, a reciprocating device, an electronic speed limiter, a motor, pier posts and so on, wherein the safety levers are arranged on the left and the right on or below an outer frame of an automobile; the pier posts are arranged on the shaft wall of an elevator; and the electronic speed limiter is arranged inside an elevator machine room. When an elevator is out of control and fallen down or pushed to the top at an excessive speed, the safety levers can be bounced out and stopped by the pier posts on both sides of the shaft wall; braking of the automobile can not be influenced even a guide rail, a steel rope, safety tongs and so on are stained with a large quantity of oil or humidified; and staffs are easy to go out because a motionless automobile door faces to a floor door. The device makes up for the blank in the aspect of using the safety lever device on the elevator, and is provided with various structural forms for people to select and set. The device can overcome the defect that the automobile door does not always face to the floor door when the safety tongs of the elevator brake, and can also overcome the defect that braking of the elevator is influenced because the steel rope, the guide rail and so on are stained with a large quantity of oil and too humidified.
Owner:白士良

A Thin Plate Heating Furnace Self-propelling Steel Rods

The invention relates to a sheet heating furnace capable of automatically discharging steel pushing rods. The sheet heating furnace has a furnace body, wherein a furnace door sliding up and down is arranged in a front part of the furnace body; two steel pushing rod grooves arranged in parallel are formed in the bottom of the furnace body; front ends of the steel pushing rod grooves extend out a section from the furnace door; steel pushing rod driving devices are arranged at the front ends of the steel pushing rod grooves; two steel pushing rod outlet holes are formed in a rear end wall of the furnace body; steel pushing rod collecting boxes are arranged outside the two steel pushing rod outlet holes; a sheet outlet is formed in a tail side wall of the furnace body; a discharge door sliding up and down is arranged on the sheet outlet; a material table is arranged at the outer part of the sheet outlet; a sheet pulling device is arranged on the outer side of the material table; the sheet pulling device is provided with a pulling cylinder; an output end of the pulling cylinder is connected with a mounting base plate; two hooks are arranged on the mounting base plate side by side; the two hooks are arranged toward the sheet outlet. The sheet heating furnace provided by the invention is novel and delicate in structural design and simple and convenient to operate, and can greatly reduce work environment and work intensity of field operators.
Owner:湖北楠田工模具科技有限公司

Fully automatic specific protein analyzer

The invention discloses a full-automatic particular protein analyzer which comprises a shell, a power system, a reagent cup base, a rotary sample disc, a sample adding probe mechanism, a fluid circuit system, a detection photoelectric system and a controller. The power system is used for providing power, the reagent cup base is used for containing a detection reagent, the rotary sample disc is used for containing a sample cup and a cuvette, the sample adding probe mechanism is used for adding samples, the fluid circuit system is used for providing cleaning fluid and positive and negative air pressure for a sample adding probe, the detection photoelectric system is used for detecting the turbidity of samples in the cuvette, the controller controls the power system, the detection photoelectric system and the fluid circuit system, the controller is further connected with a card reader and a displayer, the card reader reads operator information, the displayer displays parameters detected by the detection photoelectric system, and the sample adding probe adds the samples and the detection reagent into the cuvette through rotation and vertical movement for detection. According to the full-automatic particular protein analyzer, the accuracy and detection speed of protein analysis are greatly improved, and the operation intensity of workers is relieved.
Owner:SHENZHEN HUISONG TECH DEV
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