47results about How to "Cause shock" patented technology

The invention discloses a direct-acting electric valve comprising a valve seat having a valve cavity and a valve core disposed in the valve seat. The valve cavity is divided into an upper cavity and a lower cavity by the valve core; the valve core is connected with a nut; the valve core driven by the nut can axially move to be arranged on a valve port of the valve seat in an opening or a close way; the nut is formed by a small diameter part and a large diameter part arranged on the lower end of the small diameter part; at least one through groove communicated with the upper cavity is formed on the peripheral wall of the large diameter part; the valve core is provided with an accommodating cavity accommodating the large diameter part and an axial through hole communicated with the accommodating cavity; the axial through hole is communicated with the valve port; the periphery of the large diameter part is provided with an opening to be communicated with the axial through hole and the through groove; therefore, when air pressure of the valve port is higher or lower than the upper cavity, air pressure balance can be achieved via a flow channel formed by the axial through hole of the valve core, the opening of the large diameter part of the nut and the through groove; the valve core can be prevented from upward or downward pushing force; and impact to the valve core or impedance to the action of the valve core can be prevented.

The invention discloses a siphon roof drainage system which comprises multiple rainwater hoppers, a suspension pipe and a vertical pipe. The multiple rainwater hoppers are communicated with the horizontal suspension pipe through connecting pipes respectively, and a water outlet end of the suspension pipe is connected with a water inlet end of the vertical pipe; a first buffer plate, a second buffer plate and a third buffer plate which are each of a circular ring structure are arranged on the inner wall of the middle lower part of the vertical pipe in sequence from top to bottom, and the inner diameters of the circular rings of the first buffer plate, the second buffer plate and the third buffer plate are sequentially reduced; a water outlet of the vertical pipe is of a horn-shaped structure. The siphon roof drainage system can reduce the excess pressure and flow velocity of the water outlet of the vertical pipe in the system, a higher impact caused by rainwater with the larger flow velocity to a building foundation is prevented, and the situation that due to the fact that air enters the rainwater hoppers, the drainage efficiency of the system is affected is prevented.

The invention discloses a sensor self-adaptive heating method which is implemented to a heating system, the heating system comprises a controller, a heating device, a temperature sensor and a timer, and the sensor self-adaptive heating method comprises the following steps: S1, enabling the temperature sensor to detect the temperature T; s2, if the temperature T is higher than the heating thresholdT0, executing the step S3, and if the temperature T is lower than the heating threshold T0, executing the step S4; s3, entering a standby mode, and repeatedly executing the step S1; s4, entering a rapid heating mode, starting a heating device, and continuously heating; s5, judging whether the temperature T reaches the target temperature T1 or not, executing the step S6 if the temperature T does not reach the target temperature T1, and executing the step S7 if the temperature T reaches the target temperature T1; s6, continuously heating, and repeatedly executing the step S5; s7, entering a PWMself-adaptive heating mode, and periodically switching on and off the heating device in turn with a period of t0; and S8, maintaining the target temperature T1.

The invention relates to the field of food processing, and particularly discloses an agrocybe-cylindracea washing and processing device. The agrocybe-cylindracea washing and processing device comprises a water tank, a handle, a drying device and a baffle. A heating wire is arranged in the water tank, the baffle is horizontally arranged in the water tank, a hopper-shaped guiding groove is formed in the baffle, a plurality of through holes for agrocybe-cylindracea stems and citric acid bags to pass through are formed in the bottom face of the guiding groove, a moving plate is arranged at the bottom of the water tank, barbs capable of puncturing the citric acid bags are arranged on the moving plate, and one end of the handle penetrates through the water tank and is fixedly connected with the upper portion of one side of the moving plate; a stirring device is arranged over the water tank, and comprises a containing cavity for containing welsh-onion liquid and flour, a stirring rod, a feeding opening and a discharging opening, the stirring rod is installed on the inner wall of the containing cavity, the feeding opening is formed in the upper end of the stirring device, the discharging opening is formed in the lower end of the stirring device, both the feeding opening and the discharging opening are communicated with the containing cavity, and the drying device and the upper surface of the baffle are oppositely arranged. By means of the agrocybe-cylindracea washing and processing device in the technical scheme, agrocybe cylindracea can be completely washed.

The present invention discloses a DC motor control system and a switch method thereof. The DC motor control system which has a speed and position online switched consists of an inner ring, an outer ring and a switch ring. The inner ring alone controls the speed of the DC motor, the embedding combination of the inner and the outer rings control the position of the DC motor, the switch ring assuresa stable online switch from the control of the speed to the control of the position. The DC motor control system and the switch method of the present invention control not only the speed of the DC motor but also the position of the DC motor. In addition, the speed control and the position control can switch online stably and the online switch has no impact on the position to be controlled in operation. Therefore the two different controlled variables of the DC motor can be controlled anytime according to actual operation needs in production.

The invention discloses a storage battery voltage balancing device and belongs to intelligent charging and discharging control devices of storage battery packs for direct-current power sources in an electrical power system. A storage battery charging control circuit is connected with a single chip, a storage battery managing chip is connected with the single chip via an SPI (serial peripheral interface) bus. In a storage battery voltage acquisition circuit, a storage battery pack is formed by a plurality of storage batteries which are mutually serially connected, and a positive electrode of every storage battery in the storage battery pack is connected with the storage battery managing chip. In a storage battery discharging control circuit, the positive electrode of every storage battery is connected with a source electrode D of a P-type MOSFET (metal-oxide -semiconductor field effect transistor), and the negative electrode of every storage battery is connected with the storage battery managing chip. During discharging, only overcharged batteries are discharged; and during charging, only batteries with low capacities are charged. The storage battery voltage balancing device is small in size, low in noise, high in reliability and real-time in control.

The invention discloses a locating mechanism. The locating mechanism comprises a base body, a carrying platform, a first locating component, a second locating component, a first servo motor, and a second servo motor. When the locating mechanism conducts location and fixation on a battery piece, the first servo motor controls the first locating component to gently clamp the two ends of the battery piece simultaneously, and the second servo motor controls the second locating component to slowly clamp the two ends of the battery piece simultaneously. Compared with the prior art, the locating mechanism can clamp the two ends of the battery piece simultaneously, and compared with an air cylinder, power provided by the servo motors is higher in controllability, the locating mechanism can be guaranteed to conduct slow movement and not to cause shock to the carrying platform of the battery piece, and thus the battery piece can be better located and fixed.

The invention discloses a linkage system based on a sliding door and window. The sliding door and window is formed through the connection of a board-like movable object and a board-like linkage object. The linkage system comprises a connecting board presenting an S-shaped structure, a slide groove assembly, a slide rail assembly and a positioner, wherein the slide rail assembly comprises a first slide rail and a second slide rail, and the first slide rail and the second slide rail are respectively arranged at two ends of the connecting board; the slide groove assembly comprises a first slide groove and a second slide groove; the first slide groove is formed in the board-like movable object, and the second slide groove is formed in the board-like linkage object; the first slide groove and the second slide groove face to the same direction; the first slide groove formed in the board-like movable object is correspondingly connected with the first slide rail; the second slide groove formed in the board-like linkage object is correspondingly connected with the second slide rail; the positioner is a fixed piece in a square block shape, and is fixedly mounted in the second slide groove in the linkage object or the first slide groove in the movable object. The linkage system disclosed by the invention can realize the phenomenon that the overlapped area of a door leaf is the smallest when the sliding door and window is opened, namely the sliding door and window is completely opened, so that the maximum area division space of the door leaf is sufficiently utilized.

The invention discloses a method for restoring eutrophic water body, which comprises the following steps: 1. The eutrophic water body restoration medicament is prepared by using water, oxygen release agent, biomass charcoal powder, compound bacterial agent, alkali agent and binder. ; Second, the application of chemicals to eutrophic water bodies. The eutrophication water body restoration method of the invention has the advantages of high removal rate, low cost, environmental friendliness and the like, and can efficiently and lastingly restore the eutrophication water body.

The invention relates to an automatic assembly system and an assembly method for a PCB cable plug. The wrench assembly provides propulsion to a drive plate, and the drive plate guides the thrust to a push rod, and the push rod withstands the circuit board to be inserted; And dampers are arranged at both ends of the transmission plate, so that the transmission plate can have damping when it is pushed, and will not cause impact on the board surface of the circuit board. For the circuit board pin mechanism, by setting the cam transmission assembly, and further designing the cam transmission assembly as three cams and three matching swing rods, thus forming a cam group and a swing rod group, the three cooperate with each other for transmission, And two of the swing rods located on both sides of the adapter plate are hinged through the hinge support, so that the balance of the linear motion of the adapter plate can be maintained to the greatest extent during operation, and the sliding error caused by the traditional single-link structure can be avoided. The problem of stability occurs, and at the same time, when the cam group and the swing rod group are driven, most of the lateral stress is absorbed by the swing rod, which alleviates the problem of slide rail and slider wear.

The invention discloses a control method of a mechanical arm based on impedance control, which includes a mechanical arm with an end effector and a position controller and a host computer for inputting and calculating parameters, and the end effector is provided with a position Sensors, speed sensors and force sensors, and include a. input calculation expected pose variables, b. calculation of expected control torque, c. calculation of error torque, d. calculation of main control torque and control the movement of the robot until it meets the expected value. The impedance control-based control method of the mechanical arm obtained in the present invention is compared with the traditional control method of the mechanical arm. After the mechanical arm starts and receives the parameters fed back by the sensor, the PID control method is used to adjust the error value, and the calculation result is used to replace the traditional impedance. The error value directly used in the control avoids the peak value of the main control torque that is much larger than the expected value in the process of approaching the expected value, so the mechanical arm will not cause impact on the material, and can realize high-precision handling and processing operations.

The invention discloses a driving circuit of arrow-head-shaped traffic lights. The driving circuit of the arrow-head-shaped traffic lights comprises a power supply unit, a rectification unit, a filtering unit, a voltage stabilizing unit and a displaying unit, wherein the power supply unit, the rectification unit, the filtering unit, the voltage stabilizing unit and the displaying unit are connected in sequence. By changing the circuit connecting method of the displaying unit, when one LED lamp is damaged, the work of other LED lamps on branches connected in series will not be affected, the problems of traffic jam caused by failures in the use process of the traffic lights, and the like are avoided, and meanwhile repairing cost is saved. The voltage stabilizing unit is of a structure with various capacitors connected in parallel, the power supply voltage of the displaying unit is more stable, the impact to the LED lamps caused by unstable voltage is avoided, and the service life of the LED lamps is prolonged.

The invention discloses a direct-acting electric valve comprising a valve seat having a valve cavity and a valve core disposed in the valve seat. The valve cavity is divided into an upper cavity and a lower cavity by the valve core; the valve core is connected with a nut; the valve core driven by the nut can axially move to be arranged on a valve port of the valve seat in an opening or a close way; the nut is formed by a small diameter part and a large diameter part arranged on the lower end of the small diameter part; at least one through groove communicated with the upper cavity is formed on the peripheral wall of the large diameter part; the valve core is provided with an accommodating cavity accommodating the large diameter part and an axial through hole communicated with the accommodating cavity; the axial through hole is communicated with the valve port; the periphery of the large diameter part is provided with an opening to be communicated with the axial through hole and the through groove; therefore, when air pressure of the valve port is higher or lower than the upper cavity, air pressure balance can be achieved via a flow channel formed by the axial through hole of the valve core, the opening of the large diameter part of the nut and the through groove; the valve core can be prevented from upward or downward pushing force; and impact to the valve core or impedance to the action of the valve core can be prevented.

The present invention provides a heavy rail scaling apparatus and a method therefor. The apparatus is a single-set or double-set mechanical scaling apparatus comprising a striking head elevating system, a transmission system, a frame and a detection switch. According to the invention, an electrohydraulic push rod is taken as power source to drive a swing rod to swing, a top wheel arranged at the front of the swing rod is employed to control the rise and fall of a lifter plate to allow the striking head arranged at the top end of the lifter plate to be located at either a working position or as top position and cooperate with a scaling saw to realize accurate scaling of the heavy rail. By employing a front detection switch and a damping and thickness-adjusting striking head having a polyurethane bumper pad and an adjusting gasket unit, impact to the striking head can be reduced while the speed of a frequency-changing roller-way is controlled, the service life of the scaling apparatus can be prolonged, the precision of heavy rail scaling can be improved, and the tolerance of the length of the heavy rail is kept between +4mm and -4mm. The apparatus has a simple structure and is easy to operate and convenient to maintain. The method is reasonable, and enables stable system running process, high operation rate, and low accident rate. In addition, the apparatus can increase the yield of heavy rail. The present invention is particularly suitable to be used for the scaling of 95, 96, 99,100 meter heavy rails.

The invention relates to a coal-fired sleeve shaft kiln injection unlocking system. The coal-fired sleeve shaft kiln injection unlocking system comprises a compressed air storage tank; the compressed air storage tank is connected with injection unblocking units through pipelines; the injection unblocking units are arranged on the lower portion of every nozzle combustion chamber of a sleeve shaft kiln; every injection unblocking unit comprises an air cannon and a heat resistant expansion nozzle; the air cannons are arranged closely adjacent to the lower portions of the nozzle combustion chambers and are fixed on a kiln casing through a support; one ends of the heat resistant nozzles and air cannon outlets are connected through flanges; the other ends of the heat resistant nozzles extend into the interior of a kiln body; the heat resistant expansion nozzles eject high-pressure airflows and impact material surfaces and hardening of the material surfaces is crushed, and flowing of materials is recovered. The coal-fired sleeve shaft kiln injection unlocking system is simple and reasonable in structure and convenient to install and detach and effectively solving the blocking problem of the lower portion of the coal-fired sleeve shaft kiln arch bridge, is small in invest, low in operation cost and simple in maintenance, improves the lime kiln operation stability and the operability, reduces the time of maintenance slow-down kiln and creates considerable economic benefits.