139 results about "Governor" patented technology

A method for controlling the speed of an engine driving a generator supplying electrical current to a load includes the steps of monitoring the current, increasing the speed when the current increases and decreasing the speed when the current decreases. The governor apparatus used to carry out the method includes a microcontroller having a current and frequency look-up table embedded in it. For some part of the monitoring step, the engine runs at a first speed, e.g., idle speed, or some moderate speed above idle speed. The increasing step includes detecting an increase in the current to a value, determining from the look-up table the frequency corresponding to the value and increasing the speed of the engine until the frequency of the current is the frequency corresponding to the value. To state it in other words, the new method and apparatus control the engine at a modest speed when the generator is unloaded or lightly loaded and increases engine speed and current frequency with increases in generator load.

A spring retractable reel having a pneumatic retraction governor or air motor for regulating the rewind speed of a spool for taking up a line of material. For example, an air motor includes a rotor having vanes, a first port opening onto one side of the rotor, and a second port opening onto a second side of the rotor. A valve adjustably restricts a continuous flow of ambient air through the second port, and the valve defines an opening sized smaller than the first port. The rotation of the spool and the rotor are fixedly coupled together, for example, with a chain. When the spool rewinds the line of material, the rotor rotates, which in turn draws ambient air through the first port, a portion of which ambient air is restricted from exiting the second port due to the valve thereby compressing air within the air motor to regulate or limit the speed at which the spool rewinds the line of material.

An elevator without an engine room mainly comprises a traction system, a guide system, an elevator car, a door system, a weight balancing system, an electric drive system, an electric control system and a safety protection system. A tractor of the traction system and a speed governor of the safety protection system are mounted in a shaft of the elevator. A control cabinet of the electric control system is mounted on the topmost hoistway door of the elevator so that the engine room is compressed in the shaft of the elevator. A permanent magnet gearless synchronous tractor is used as the tractor. Frequency conversion of the permanent magnet gearless synchronous tractor is controlled by a microcomputer. Transmission of the tractor is independent of a gearbox, so that transmission wastage is reduced greatly. Movable block transmission is used as a traction manner of the tractor. A diversion sheave which is used for rewinding of steel wire ropes of a traction system are mounted at two corners in the lower middle of the elevator car, so that top space of the shaft is saved, and top layer height is reduced. The elevator without the engine room has the advantages of simple structure, convenience to mount and use, reliability, low manufacture cost, capability of lowering energy consumption and the like.

The invention discloses an elevator speed governor, and belongs to the technical field of elevator safety protection devices. The elevator speed governor comprises a box body which is provided with a signal collector, a speed governor wheel which is provided with a lock catch, a centrifugal mechanism which is arranged on the speed governor wheel, a centrifugal hammer reset mechanism which is arranged on the speed governor wheel and connected with the centrifugal mechanism, and a traction rope with the upper end fixed to an upper end and lower end connecting counter weight of a top layer floor. The elevator speed governor is characterized by further comprising a traction rope pressing wheel, a safety tongs braking rope and a braking rope traction mechanism, the traction rope pressing wheel is located in a cavity of the box body and arranged in the middle of a traction rope pressing wheel shaft, the middle of the traction rope is wound on the speed governor wheel and the traction rope pressing wheel, the upper end of the safety tongs braking rope is tied and fixed to the braking rope traction mechanism, the lower end of the safety tongs braking rope is connected with a pair of safety tongs, the speed governor wheel shaft is sleeved with the braking rope traction mechanism, and the braking rope traction mechanism is matched with the signal collector and the lock catch. The situation that negative rotation happens to the speed governor wheel is avoided; the effect of reliably locking a guide rail through the safety tongs is improved; action is reliable, and safety is ensured; the structure is simple, manufacturing is convenient, and assembling is rapid.

A secondary engine speed control mechanism for small internal combustion engines, including an operator control which is manually operable to override an engine running speed which is set by the engine's primary speed control mechanism and governed by the governor. The secondary speed control mechanism may be selectively actuated by the operator in anticipation of an increased engine load to provide a temporary increase or “boost” to engine speed above the set, governed engine running speed. The secondary speed control mechanism may be either mechanically or electrically actuated, and may include an operator actuated, trigger-type mechanism or an electrical switch located on the handle of an implement with which the engine is used.

A carburetor control system includes: a governor device that is coupled to a throttle lever, opens a throttle valve when an operation of an engine is stopped, and opens or closes the throttle valve in accordance with a rotational number of the engine when the engine is in operation; a choke return spring urging a choke lever in a direction to close a choke valve; and an automatic choke device opening the choke valve in accordance with an increase in temperature of the engine. In the carburetor control system, the throttle lever is provided with a drive arm pivoting the choke lever, during a cold operation of the engine, to a position where the choke valve is at an intermediate degree of opening in operative connection with the throttle lever being pivoted by the governor device to a position where the throttle valve is at a degree of opening for idling or a position in a vicinity thereof. Accordingly, it is possible to mechanically open the choke valve to a predetermined intermediate degree of opening, when the engine is in a cold idling state, in operative connection with the throttle valve, so as to be capable of ensuring a fuel-efficient and stable idling state.

The invention discloses a lift car frame speed limiting device which comprises a ratchet wheel and a pawl, wherein the ratchet wheel is coaxially arranged with a lift car frame diversion sheave, the pawl can be rotatably placed on the lift car frame diversion sheave and is capable of rotating and being inserted into tooth grooves of the ratchet wheel when the lift car frame diversion sheave operates in an over-speed mode. A pair of safety tongs and a draw bar are rotatably placed on the radial surface of the ratchet wheel. When an elevator operates in an over-speed mode, the lift car frame diversion sheave can also rotate in an over-speed mode correspondingly, the pawl rotates and then is clamped inside the tooth grooves of the ratchet wheel, therefore, along with the rotation of the lift car frame diversion sheave, the ratchet wheel rotates correspondingly, the rotating ratchet wheel pulls the safety tongs and the draw bar, the draw bar pulls the safety tongs to enable the safety tongs to move, a lift car can be stopped in time, and a protection role is played. The lift car frame speed limiting device is simple in structure, an over-speed governor steel wire rope, a balancing weight and other components are removed, and manufacturing cost is low.

The invention provides a digital electric speed regulator and an engine speed regulating method. The digital electric speed regulator comprises a rotating speed controller, an actuator and a rotating speed sensor, wherein the rotating speed controller comprises a rotating speed setting potentiometer which is used for setting a desired speed, an F/V converter which is used for converting analog signals of the actual rotating speed sensor into digital signals and sending the digital signals to the rotating speed controller, a comparator which is used for comparing a desired speed with an actual rotating speed, a rotating speed deviation device which is used for calculating the rotating speed deviation value between the desired speed and the actual rotating speed, and a PID regulator which is used for converting the rotating speed deviation value into a PWM signal to control the actuator, the actuator compresses an internal spring under the action of driving currents to achieve linear motion output, and a pull rod of the actuator acts on a speed regulating handle of an engine to control the engine to operate stably at the set rotating speed. The digital electric speed regulator and the engine speed regulating method have the advantages that a power system can be operated and run more safely, the discreteness is good, and stability is good.

The invention relates to an elevator emergency braking device, which includes an elevator lower beam and a safety gear. A linkage mechanism is installed on the elevator lower beam. The linkage mechanism includes a fixing plate, a linkage shaft and a rocker arm. One end of the rocker arm is connected with the safety gear. The other end is installed with a lifting retaining shaft connected with the wire rope of the speed limiter; a reset plate is arranged on the lifting retaining shaft, and a reset through hole is arranged on the reset plate, and a spring fixing seat is also installed on the fixing plate, and the spring fixing seat There is a mandrel passing through the reset through hole, and two return springs respectively located on both sides of the reset plate are set on the mandrel. One end of the return spring is in contact with the reset plate, and the other end of the return spring is in contact with the spring fixing seat. superior. The linkage mechanism in the present invention can ensure that the two swing arms rotate synchronously to drive the safety tongs on both sides of the lower beam of the elevator to brake synchronously, preventing the elevator car from tilting during emergency braking; The spring can drive the swing arm to reset so that the safety gear releases the guide rail.

In an elevator system, so as to avoid unwanted safety gear tripping, the kinetic energy, which is caused by inertia of the overspeed governor rope to the lever arm, is dissipated by implementing fluid viscous damping to dampen the rotary movement of the spindle shaft to prevent unwanted safety gear tripping in the event when the upwards movement of the moving mass is decelerated by a machinery brake to perform a quick stop of the moving mass. The fluid viscous damping is effected by a viscous fluid damper which is arranged in the synchronization linkage mounted to the moving mass.

The invention relates to a steam turbine set emergency governor test device comprising an emergency governor; a variable-frequency motor of which the power output end is connected with the rotor of the emergency governor and drives the emergency governor to rotate, wherein the variable-frequency motor and the emergency governor are connected through a fixing device; a rotating speed measuring device which records rotating speed of the variable-frequency motor in real time; a fly ball motion sensor which monitors the fly ball fly-out motion of the emergency governor; and a controller which is connected with the variable-frequency motor, the rotating speed measuring device and the fly ball motion sensor.

The invention discloses a multi-power-source hybrid power system and an energy management method thereof. The system comprises an engine, an oil tank, a hybrid energy storage system, an airborne motorset, a motor propeller, an engine propeller, a clutch, a rectifier, an inverter, an electronic speed regulator, a state of charge estimation unit, a power generation/electric all-in-one machine and acontrol unit. A super capacitor and a storage battery pack are connected to form the hybrid energy storage system, the service life of the storage battery in an original aircraft hybrid power systemis prolonged, and the dynamic power supply performance is improved; in addition, a novel energy management method is provided for the multi-power-source hybrid power system composed of the storage battery pack, the super capacitor and the engine, the fuel utilization efficiency of the engine and the endurance mileage of an aircraft can be improved, the service life of the battery can be further prolonged, and the dynamic power supply characteristic can be further improved.

The invention discloses a safe anti-falling device for a medium-high-rise light-load stacking machine loading platform. The device comprises a driving clamping mechanism and a driven clamping mechanism which are respectively arranged at two sides of the stacking machine loading platform, wherein the driving clamping mechanism is connected with the driven clamping mechanism through a synchronizing shaft, so that the driven clamping mechanism and the driving clamping mechanism synchronously clamp stand columns; the driving clamping mechanism comprises first clamping components, first lifting components, a speed governor and first connecting rod components, and the first clamping components are arranged at the two sides of the stand column; the first lifting components are connected with the first clamping components; the speed governor is connected with the first lifting components; and the first connecting rod components are connected with the first lifting components and the synchronous shaft. According to the embodiment of the invention, the speed governor is arranged, the speed governor acts on the driving clamping mechanism to control braking of the stacking machine loading platform under the stall condition, and the synchronous shaft synchronously controls the driven clamping mechanism and the driving clamping mechanism to be matched to brake from the two sides of the stacking machine loading platform at the same time, so that the stacking machine loading platform is prevented from inclining laterally.

The invention relates to a traction driving isochronism speed governor and a multiple-driving-shaft transmission adopting the same. The multiple-driving-shaft transmission comprises a speed governor chamber and a variable-speed gear chamber. According to the invention, the power of an engine is transmitted to an output set of the transmission in a traction driving manner by the isochronism speed governor in the speed governor chamber, a plurality of roller sets are arranged between an input part and an output part of the speed governor in a planetary manner and the output part pushes against the roller sets to move axially so as to be in contact with the input part, therefore, the effect of transmission of power is realized; and meanwhile, the shaft of all driving sets in the variable-speed gear chamber are arranged in parallel at unequal shaft intervals around the shaft of the output set and by taking the shaft of the output set as a center, so that number of gears of the transmission can be increased in limited space. Through adopting the traction driving isochronism speed governor and implementing the technical means of arranging shafts of all driving sets, the problems of low transmission efficiency of a transmission, clutch abrasion and larger occupied area during speed change gear increase in the prior art are improved.

The invention discloses a safety anti-falling device for an elevator. The safety anti-falling device comprises a speed governor mounted on the upper portion of an elevator car, a pair of safety tongs which is mounted on the two sides of the lower portion of the elevator car and matched with a guide rail, and a lifting mechanism connecting the speed governor with the pair of safety tongs, wherein the speed governor comprises a friction wheel tightly attached to the guide rail in a rolling mode, a centrifugal wheel coaxially fixed to the friction wheel, a winding drum which is coaxial with the friction wheel and arranged on a shaft in an empty sleeving mode, a guide wheel located above the friction wheel, and a steel wire rope which is wound on the winding drum, bypasses the guide wheel upwards and is then connected with the input end of the lifting mechanism downwards; a sinking groove is formed in the side, close to the centrifugal wheel, of the winding drum; clamping jaws are distributed on the inner wall of the sinking groove; throwing hooks and springs connected with the throwing hooks are arranged on the centrifugal wheel; the throwing hooks are located in the sinking groove; the throwing hooks are restrained by the springs in the normal state; when the centrifugal wheel is in an overspeed state, the throwing hooks overcome spring force to conduct centrifugal throwing and hook the clamping jaws to lock and fix the centrifugal wheel and the winding drum; and the lifting mechanism can lift and trigger the safety tongs on the two sides to brake at the same time. The safety anti-falling device is mounted on the elevator car as a whole, so that a full-length steel wire rope is omitted.

Provided is an elevator device that includes a wedge-shaped braking element for gripping a guide rail on a lifting body. A speed governor rope is installed in a hoist way in parallel with a suspensionbody of the lifting body. The elevator device is provided with a first biasing part for biasing the braking element upward by gripping the speed governor rope in the speed governor in the case wherethe lifting body has abnormally accelerated, and a second biasing part for biasing the braking element upward by utilizing the motion generated by the falling of the lifting body at the time of breakage of the suspension body. At least one of the first biasing part and the second biasing part is separated from the braking element.

The invention relates to the technical field of ship anchoring equipment, and discloses an anchoring device for ship berthing. The device comprises a stroke unit, and the stroke unit is composed of astroke unit main body, a stop block, a stroke gear, a metering gear, a mounting groove, a driving sliding block, a ball groove I, a permanent magnet I, a clamping block, a driven sliding block, a ballgroove II, a permanent magnet II and a ball. Through the arrangement of a speed governor, a friction block makes contact with a friction ring through centrifugal force generated during rotation of awheel body, an anchor chain wheel disc is gradually decelerated, at the moment, the friction block is reduced under the action of the centrifugal force, the borne friction resistance is reduced, meanwhile, the friction block is also subjected to tensile force of an elastic piece, so that the friction block is reset, and then an anchor chain continues to fall down and drives the anchor chain wheeldisc to rotate and gradually accelerate, so that the processes of accelerating, resetting and decelerating are circulated, the falling speed of the anchor chain is controlled, manual control is not needed in the process, and the brake error rate caused by manual work is reduced.