72results about How to "Reasonable speed" patented technology

The present invention relates to an automatic controlled operating mechanism, in particular, relates to a control circuit of a bistable permanent magnet operating mechanism. The control circuit comprises a permanent magnet operating mechanism and a pulse signal control circuit connected to pulse coils of the permanent magnet operating mechanism. The pulse signal control circuit comprises a switch-off energy storage circuit, a switch-on energy storage circuit, a switch-off contact switch, and a switch-on contact switch. With the switch-off contact switch and switch-on contact switch, the pulse coils of the permanent magnet operating mechanism are connected in the circuit in such a way that they are in series connection for switch-on and in parallel connection for switch-off. This reduces the relatively high running speed in earlier switch-on period, to reduce switch-on noise and prolong the service life. In addition, this increases the instantaneous opening speed in the initial switch-off period, to reduce generation of switch-off voltaic arc. By using the two coils in the bistable permanent magnet operating mechanism, raw material can be saved, the mechanism volume can be reduced, and the failure rate can be lowered.

The invention discloses a pre-calculation method for the controlled cooling of a thick plate after rolling. The pre-calculation method comprises the following steps of: (1) initializing to obtain the thickness d of a steel plate, steel grade information and components and measuring to obtain temperature Tw of current cooling water; (2) figuring out the number Nh of opening valves and a set value v0 of average speed of the steel plate by using a formula; (3) selecting cooling water flow Q0 and setting k to be equal to 1 and Q(k) to be equal to Q0; (4) solving formulas (4) to (7) by using the initializing information and factors in the step (1), the control parameter v0 obtained in the step (2) and the flow Q(k) in the step (3), figuring out the cooling temperature of the steel plate at an initial temperature after time t to obtain cooling temperature of the steel plate T'e, and setting that if an absolute value of eCR is less than epsilon and epsilon is less than or equal to 0.0001, Q0 is equal to Q(k) and calculation ends, and otherwise, the next step is proceeded to; (5) setting k to be equal to k plus 1, wherein alpha is larger than 0 and less than 1 and is a weight factor, and transferring to the step (4); and (6) figuring out a position-temperature curve set value. The invention can be popularized to all steel plants at home and abroad for pre-calculation in controlled cooling of medium and heavy plates after rolling and has good promotion and application potentials.

The invention discloses an ultrafast cooling system after rolling for a hot rolled strip steel production line. 2 groups of cooling devices consisting of cooling manifolds in different structures are arranged in turn along the steel plate rolling operation direction of a rolling line, and each group is provided with 8 to 10 rows of paired cooling manifolds. The system is characterized in that: flat jet flow manifolds and high density jet flow manifolds are combined in rows, wherein the high density jet flow manifolds are positively inclined, vertical, negatively inclined and in an edge combined vertical inclined mode, and are used independently or combined; various manifolds are correspondingly arranged on the upper and lower parts of a roller bed vertical to the length direction of the rolling line; upper and lower cooling manifolds are directly connected with a high pressure water supply pipe through a control valve bank and pipelines; the control valve bank can independently regulate and read the water flow of a water injection nozzle of each cooling manifold; and the water injection nozzles of the upper and lower cooling manifolds form various angles with the cooled strip steel. The system is favorable for uniform cooling and water sealing of steel plates, and realizes reasonable cooling speed control and temperature precision control of the strip steel.

A detecting method and warning device for the accident separation of the tail carriage(s) of a running train is disclosed. Said method is chosen from real-time measuring of the position parameters for locomotive and tail carriage to directly judge the relation between the distance from locamotive to tail and the actual train length, comparing the speed of locomotive and the speed of tail carriage, comparing their accelerations, and comparing their running directions.

The present invention provides two-component polyurethane compositions that are substantially free of VOCs and comprising, as one component, polyisocyanate compositions and, as a second component, a polyol which is chosen from a cycloaliphatic diol or polyol having a molecular weight of from 100 to 500 and containing one or more 4 to 7 member aliphatic ring and an oligomeric diol or polyol comprising the condensation reaction product of from 30 wt. % to 78 wt. %, based on the total weight of reactants used to make the oligomer, and an acrylic or vinyl emulsion polymer.

A method for assisting the reversal of an articulated vehicle includes recording a predefined number of positions for a first articulated vehicle for a specified path, recording the articulation angle of each articulation joint of the articulated vehicle at the predefined number of positions, recording the heading for the first articulated vehicle at the predefined number of positions, saving the recorded values for the specified path in a memory, calculating the swept area of the first vehicle for the specified path by using the recorded values and size information of the articulated vehicle, and using the swept area to control the steering of the articulated vehicle when reversing the articulated vehicle along the specified path, such that the articulated vehicle does not extend outwards of the swept area during the reversal. The area covered by the articulated vehicle when travelling forwards can be used to control the steering of the vehicle when reversing along the same path, such that the articulated vehicle substantially does not extend outward the swept area when reversing. In this way, an assisted reversing functionality can be used, which allows for a faster and more efficient reversing of the articulated vehicle, and at the same time allows for an improved comfort for the driver.

The invention provides a film roll feeding device and belongs to the technical field of film processing. The film roll feeding device comprises a left clamping assembly, a right clamping assembly, a two-way driving cylinder and a horizontal sliding supporting base which is arranged on a fixed supporting base in a front-back sliding manner; a lead screw and a lead screw nut are in threaded connection; the upper end of a lifting piston rod of a lifting cylinder is connected with an upper bearing base; the left clamping assembly and the right clamping assembly are symmetrically arranged on the left side and the right side of the upper bearing base; the right end of a left piston rod of the two-way driving cylinder is fixed to a left piston; the left end of the left piston rod is connected with a left bearing block; the left end of a right piston rod is fixed to a right piston; the right end of the right piston rod is connected with a right bearing block; and a bearing cylinder body is provided with a left gas valve, a middle gas valve and a right gas valve. The film roll feeding device automatically achieves feeding of a film roll, is reasonable in structure and high in automation degree, guarantees stable feeding of the film roll, and is good in reliability.

The invention belongs to the field of metal material production and manufacture, and specifically discloses a control method for sigma-phase precipitation of ER316L austenitic stainless steel wire rods. According to the method, sigma-phase precipitation proportions of ER316L austenitic stainless steel wire rods are controlled through the cooperation of rolling temperature and strain rate in the process of producing and rolling wire rods, the rolling temperature is higher than 1000 DEG C, and the strain rate is lower than 40 s-1. A solid solution heat treatment method and a high-temperature compression experiment in the field of metal heat processing are adopted, so that the laws of influences, on second-phase precipitation behaviors, of ER316L austenitic stainless steel, of solid solutiontemperature and strain rate are discovered and grasped, optimum rolling temperature and spinning temperature are determined, and reasonable rough/intermediate rolling speed and pass deformation are determined at the same time, thereby optimizing the rolling process and carrying out high-speed rolling. According to the method, the surfaces and internal parts of the produced wire rods do not defects, the tissues focus on austenite grains, the sigma-phase content is smaller than 3% and is distributed in a dispersion manner, the tensile strength mean value is 640.2 MPa, the elongation mean value is 48.7%, and relatively good drawing performance is embodied.

The invention discloses a vehicle formation driving system based on Internet of vehicles. The system comprises an information interaction module, a data processing module, and a control system, wherein the information interaction module is used for inter-vehicle communication and obtaining vehicle condition information of formation vehicles; the data processing module is electrically connected with the information interaction module and used for analyzing and processing the received information to obtain expected vehicle condition data of the vehicle; and the control system is electrically connected with the information interaction module and the data processing module at the same time, and is used for controlling a vehicle speed according to the received expected vehicle condition data ofthe vehicle obtained by the processing module. The invention further provides a vehicle formation driving control method based on the Internet of vehicles. A driver can quickly find the formation vehicle and follow the vehicle to drive, the expected vehicle speed is controlled according to a driving condition of the vehicle entering the formation, a safety distance between the vehicle and the preceding vehicle is kept, a traffic jam condition is relieved, and driving safety is improved. The driving conditions of the vehicles are controlled through the inter-vehicle communication so that the distance among the vehicles and the vehicle speed are more reasonable.

The invention discloses a modularized joint of a cooperative positioning arm for a minimally invasive surgery robot. The modularized joint comprises a shell, a driving mechanism fixedly arranged in the shell and an output mechanism rotatably arranged in the shell, wherein the driving mechanism is connected with the output mechanism and is connected with the output mechanisms or racks of other modularized joints; and the output mechanism is connected with driving mechanism or grippers of other modularized joints. The modularized joint adopts an interval layered structure of a rotating part anda fixed part in a transmission shaft; a motor works to realize active operation of the cooperative positioning arm; and the modularized joint has larger output torque and reasonable kinematic velocity, is high in degree of control precision, small in size, light in weight and convenient in part installation and ensures personal safety of medical care personnel.

The invention discloses an unrolling machine capable of conducting continuous roll supply and automatic unrolling. The unrolling machine comprises an unrolling mechanism and a roll supply mechanism arranged at the rear end of the unrolling mechanism. A body of the unrolling mechanism is of a frame structure. The lower end of the unrolling mechanism is provided with a supporting bottom plate of a platy structure. The left side and the right side of the supporting bottom plate are provided with side supporting plates which are perpendicular to the supporting bottom plate and are of a platy structure. A main shaft of a cylindrical structure is connected between the two side supporting plates in a matched manner. The parts, between the two side supporting plates, of the two ends of the main shaft are sleeved with rotary discs of a disc-shaped structure in a matched manner. A main shaft of an unrolling motor is driven to drive a roll shaft engaged with a linkage wheel to rotate together, accordingly, the automatic unrolling action of a glass fiber cloth roll sleeving the roll shaft outer circle is conducted, the manpower cost is saved, and the pavement efficiency is improved; and the unrolling rotation speed can be set by adjusting the rotation speed of the unrolling motor, accordingly the pavement speed is more reasonable, and the pavement face quality is greatly improved.

A pedal powered catamaran has a pair of pontoons connected by a cross platform whereat an operator sits and rotates a pair of pedals which power the catamaran via a drive mechanism, the drive mechanism allowing the operator to gain mechanical advantage. One or both of the pontoons has a seat molded directly into the upper surface thereof in order to accommodate additional passengers onto the catamaran. Back rests and cup holds are also provided.

The invention belongs to the technical field of electric power and communication, and especially relates to a communication optical cable for a 5G network. The optical cable is provided with a plurality of outer communication components, a protective layer, a sheath layer located outside the protective layer, an inner communication component and a filling component. An optical conductor is arranged in each communication component; and a light guide body is arranged in the internal communication component. The optical cable for the 5G network is characterized in that an outer sleeve and an inner sleeve are further arranged in the communication optical cable for the 5G network; the outer sleeve is located outside the inner sleeve; the outer communication components are located between the outer sleeve and the inner sleeve, the protective layer wraps the outer sleeve, the filling component is located in a gap formed by the protective layer and the outer sleeve, and the inner communicationcomponents are located in the inner sleeve. The invention also discloses a photoelectric composite cable and a manufacturing method thereof. The optical fiber has the main beneficial effects of highoptical fiber density, simple structure, easiness in manufacturing, high manufacturing speed and good universality.

The invention discloses a porous metal capillary seepage microneedle electrode and a preparing method. The porous metal capillary seepage microneedle electrode comprises a porous microneedle array electrode slice, an insulated shell, an electric signal line and a capillary liquid absorbing core ring, and multiple porous microneedles with groove channels are arranged on the porous microneedle arrayelectrode slice; a cavity is formed inside the insulated shell, an opening is formed in one side of the insulated shell, the porous microneedle array electrode slice and the opening of the insulatedshell are sealably spliced to form a cavity, and the cavity is filled with the capillary liquid absorbing core ring; the groove channels are communicated with the cavity. According to the porous metalcapillary seepage microneedle electrode, based on the advantages of the microneedle structures, the adsorptivity and diversion performance of the porous groove channel structures on a solution and the conductivity of the solution are utilized for achieving direct contact between a sensor and the corium layer of the skin, the contact impedance is greatly reduced, and bio-electricity signals with ahigh signal-to-noise ratio can be collected.

The invention belongs to the field of land surface bionic robot, and relates to a novel bionic multilegged transport robot and a use method thereof. The novel bionic multilegged transport robot comprises a box-type bearing bracket, a driving motor and a control circuit, a reducer device, a transmission device and a leg multi-bar mechanism. The principle is as follows: controlling a switch to be closed, the drive motor starts and outputs power, power is transmitted to the gear shaft of the reducer unit through the coupling, the power is transmitted to the stepped shaft of the reducer device through the gear meshing transmission inside the reducer device, and then the power is transmitted to the crankshaft through the gear meshing transmission inside the transmission device and the key connection, and the crankshaft rotates to drive each rod of the leg multi-bar mechanism to move, and finally the whole movement of the robot is realized; when the robot reaches the specified position, theswitch is turned off to stop the robot from moving. The utility model has the advantages of stable operation, low cost, moderate volume and heavy load carrying capacity, and has certain obstacle-surmounting capacity, and can be used for transporting goods in small factories and public places, and can also be used for express delivery, catering industry and even individual families.

A trench excavating machine includes an excavating wheel on which are mounted spaced apart peripheral plates equipped with ripping teeth and spades. The ripping teeth are angled outward from the plates at an acute angle directed in the direction of rotation of the cutting wheel to attack the leading edge of a trench being excavated. Ripping teeth and spades are arranged at varying spacing on succeeding plates about the centerline of the cutting wheel. A transverse conveyor located within the circumference of the cutting wheel transports spoil to the side of the cutting wheel. A spoil deflector removes spoil adhered to the inside of the cutting wheel.

In at least some embodiments, a riding walker assembly includes a support assembly and a drive assembly. The support assembly may include a frame work supporting a seat assembly, and a plurality of wheels operatively coupled to the frame work and configured to rollably engage a floor surface. The drive assembly may include a drive wheel configured to engage the floor surface, and a pedal assembly operatively coupled to the drive wheel such that rotation of the pedal assembly rotates the drive wheel. The riding walker assembly may further include a coupling assembly operatively coupling the drive assembly to the support assembly, the coupling assembly being configured to selectively engage and disengage the drive wheel from the floor surface.

The invention discloses a lever gear driving device. The device comprises two levers, a gear set, a second supporting shaft and a first supporting shaft, wherein each lever comprises a power arm, a resisting arm, an inner toothed arc and an outer toothed arc; the gear set comprises a first gear, a second gear and a third gear, the third gear is meshed with the inner toothed arc, the first gear ismeshed with the outer toothed arc, and the second gear is fixedly connected to the third gear and is rotationally connected to the second supporting shaft; the first gear is meshed with the second gear and is rotationally connected to the first supporting shaft; and when the lever on one side performs driving, the inner toothed arc and the outer toothed arc provide driving force at the same time,under the reasonable radius matching of the toothed arcs and the gears, it is guaranteed that the second gear and the third gear rotate by the same angle, and the second gear and the third gear synchronously rotate in the same direction. According to the device, the levers are used for driving and gear transmission, the power arm is long, the power loss is small, the force effect is high, the precision is high, and a reasonable rotating speed can be guaranteed.

The invention discloses a winch control system, and belongs to the field of hydraulic control. When a winch is required to release a cable, a two-position two-way reversing valve and a two-position two-way electromagnetic ball valve are electrified, and hydraulic oil in a fuel tank is extracted by a hydraulic pump and transported to the two-position two-way electromagnetic ball valve; and the hydraulic oil enters a proportional pressure reducing valve from a PA oil passage of the two-position two-way electromagnetic ball valve and enters a rodless cavity of a brake oil cylinder through a TA oil passage of the two-position two-way reversing valve, so that a brake is enabled to release the winch. In the process, the oil pressure of the hydraulic oil entering the brake oil cylinder can be controlled by the proportional pressure reducing valve, so that the brake is controlled to completely release the winch or partially loosen the winch, the winch is enabled to still be subjected to a certain amount of braking force of the brake while releasing the cable so as to maintain the speed of the winch releasing the cable to be relatively reasonable, and the situation that the winch is damagedduring braking due to excessive friction between the winch and the brake caused by too fast release of the winch is avoided.