134 results about "Governor" patented technology

The invention belongs to the technical field of mechanical test tool equipment, and particularly relates to an electro-hydraulic speed regulator test testing device. Comprising the steps that a virtual diesel engine model generates a signal and supplies the signal to a rotating speed controller, an alternating current power supply supplies power to a frequency converter to drive a motor to operate, and the rotating speed of the motor is transmitted to an electro-hydraulic speed regulator through a first coupler to drive a main pump in the electro-hydraulic speed regulator to build pressure; a hydraulic bridge circuit in the electro-hydraulic speed regulator acts to drive the output shaft to rotate, the output shaft transmits an output signal back to the virtual diesel engine model through the flywheel, the magnetic powder brake and the angle sensor, and the virtual diesel engine model feeds back the signal to the magnetic powder brake through the brake controller; and the output torque of the electro-hydraulic speed regulator is ensured to meet the operation requirement and is confirmed by the torque sensor. The electro-hydraulic speed regulator test device has the advantages that the electro-hydraulic speed regulator test device is provided with the outer circulation oil way, and the test requirements of various electro-hydraulic speed regulators can be met.

The invention discloses an electromechanical electronic speed governor which comprises a rope wheel (3) connected to a support (2) through a main shaft (1) and a control panel (4), an installation frame (8) and a plurality of magnetic blocks (9) are arranged on the other side of the rope wheel (3), and the control panel (4) is installed on the support (2) on the side and provided with a magnetic sensor (10). And the magnetic sensor (10) detects the magnetic field change of the magnetic block (9) on the mounting frame (8) synchronous with the rope wheel (3), transmits sensed data to the control panel (4), and then converts the sensed data into the running speed of the speed limiter. According to the electromechanical electronic speed governor, the control panel is adopted to detect the change of a magnetic field through the magnetic inductor, a sinusoidal waveform is formed, the running speed of the speed governor is calculated through the waveform width, meanwhile, the running direction of the speed governor is detected by arranging the multiple sets of inductors, and therefore the ultra-low speed can be detected.

Provided in the present invention are a primary frequency regulation dynamic simulation method and apparatus based on a thermal power condensate water throttling strategy, which are used for analyzing the dynamic characteristics of a unit when a power plant executes a primary frequency regulation instruction by means of a condensate water throttling strategy after a power disturbance occurs in a power grid. The dynamic characteristics mainly comprise the characteristics of a steam turbine speed governor system, the characteristics of a variable-frequency condensate pump system, the dynamic heat exchange characteristics of a low-pressure heater and extraction steam, the flow characteristics of an extraction steam pipeline, and the output characteristics of a steam turbine body. A moving boundary method is mainly applied to a heat exchange process between condensate water (a cold fluid) and shell-side extraction steam (a hot fluid) in a low-pressure heater. The heat exchange process between the cold and hot fluids can be divided into a superheated section, a phase change section and a subcooled section on the basis of the aggregation state of the extraction steam. When the moving boundary method is applied to a steam turbine regenerative system, the dynamic variation laws of extraction steam temperature and pressure can be more accurately obtained, and the extraction steam pressure on a low-pressure heater side is a key factor in determining the extraction steam flow rate on a low-pressure cylinder side, and is also critical in determining the instantaneous power increment of a steam turbine. Moving boundary method-based frequency regulation dynamic simulation for thermal power condensate water throttling takes into account relatively comprehensive actual process factors, and only one-dimensional modeling along an axial main flow direction is taken into account, thus combining the advantages of fast and accurate simulation. A fast and accurate simulation method is a prerequisite for implementing power grid frequency security analysis. By mastering the dynamic process of power plant load response from the moment a frequency deviation exceeds a dead band to the moment same returns to the dead band, a foundation can be provided for the primary frequency regulation control of power plants and the frequency security analysis of power grids.

The invention discloses a distributed model prediction control method for an offshore front-end speed regulation type wind turbine generator, and belongs to the technical field of new energy power generation. According to the method, an overall control task is decomposed into three parallel subsystems including a variable pitch subsystem, a hydraulic variable torque speed regulation subsystem and an excitation subsystem, and local discrete prediction models are established respectively. And in each sampling period, rolling optimization of each subsystem is executed in parallel, and future prediction tracks of the rotating speed and the terminal voltage of the generator are introduced as global consistency variables. And by constructing an augmented Lagrangian cost function based on an alternating direction multiplier method and performing iterative solution, driving each local prediction trajectory to converge to a globally consistent optimal trajectory. And finally, outputting a first instruction of an optimal control sequence obtained after iterative convergence to each execution mechanism, and realizing cooperative control of the three subsystems, thereby rapidly and smoothly satisfying frequency and voltage synchronization conditions at the same time before grid connection, effectively inhibiting coupling interference and wind speed fluctuation, and improving grid connection quality and operation reliability.

The invention discloses an elevator speed governor tensioning control method and device, and relates to the technical field of mechanical control, the method is applied to an elevator speed governor tensioning wheel adjusting device, and the method comprises the steps that current state data of a steel wire rope is obtained; a signal noise reduction processing algorithm is established and used for conducting noise reduction processing on the current state data of the steel wire rope to obtain current state data after noise reduction, and the signal noise reduction processing algorithm comprises a double-path collaborative noise reduction mechanism and an anti-interference enhancement strategy; a model prediction control algorithm is established and used for calculating the current position adjusting amount of the tensioning wheel according to the preset tension target range and the current state data obtained after noise reduction; controlling a tensioning wheel to move along a guide rail according to the current position adjusting quantity; and when the current state data exceed the safety threshold range, an alarm is triggered, and the tensioning wheel is controlled to stop moving. According to the method, the tensioning state can be dynamically adjusted in the elevator running process, and it is ensured that the elevator speed governor can be reliably triggered under different working conditions.

The invention discloses a hydrostatic drive control system, a hydrostatic drive control method and a loader. The system comprises a walking system and a working system, the walking system comprises a whole vehicle controller, an engine controller, an engine, an electric control closed variable pump and an electric control variable motor. The working system comprises a quantitative hydraulic pump, a control valve, a working hydraulic cylinder and a hydraulic motor; the input end of the whole vehicle controller is connected with the output end of the engine controller and the signal output ends of an accelerator pedal, a hand accelerator knob, a speed governor knob and an FNR selection switch of the loader. Two different working modes are formed based on coupling and separation control of the engine rotating speed and the electric control closed variable pump displacement under different use working conditions, so that following control over the vehicle speed and the engine rotating speed can be achieved, and separation control over the vehicle speed and the engine rotating speed can also be achieved. The problems that under the working conditions of close-range loading of the loader and constant accessory flow, the vehicle speed and accessory operation action speed are poor in collaboration, and control is complex are solved. And the displacement of the electric control closed variable pump is subjected to multi-stage proportional control, so that any real-time vehicle speed is limited, and the vehicle speed requirements under different working conditions are conveniently controlled.

The present invention discloses a speed selection mechanism for a propeller governor. The upper part of the speed selection stop assembly is sleeved between the speed selection handle and the upper part of the variable diameter screw shaft; a return torsion spring is sleeved on the outer end of the large cylinder at the upper end of the upper housing assembly; the thinner part in the middle and lower part of the variable diameter screw shaft is press-fitted into the inner hole of the upper spring seat; a lower spring seat is arranged on the upper end surface of the valve core; the thicker lower end of the variable diameter screw shaft is located below the bottom surface of the insert piece, and the spring fixed on the upper and lower spring seats is sleeved on the variable diameter screw shaft; the valve core is installed in the valve sleeve, and a bearing with the hook end of the centrifugal block abutted against the convex platform on its bottom surface is assembled with a clearance on the valve core at the lower end surface of the valve cap; a shoulder is arranged on the outer circle of the valve core, and oil grooves I and II are arranged on the outer circle of the valve core above and below the shoulder; an inlet high-pressure oil port, an outlet high-pressure oil port communicating with the oil groove I and an oil return port communicating with the oil groove II are arranged on the valve sleeve. When the propeller of the present invention is used, the rotational speed can be steplessly adjusted within a certain range, and reliable operation can be ensured at the selected required propeller rotational speed.

The present invention discloses a propeller automatic speed control device, which includes an oil circuit control component, a centrifugal speed control component and a spring adjustment component; the oil circuit control component includes an oil distribution valve, an oil distribution bushing sleeved outside the oil distribution valve, a U-shaped oil distribution bushing sleeved outside the oil distribution bushing, upper and lower bearings and a housing sleeved outside the oil distribution bushing; the upper end of the oil distribution valve is connected to a speed control spring, and the lower end abuts against a governor counterweight; when the oil distribution valve is stationary, protrusion I closes the lower high-pressure oil hole, and protrusion II closes the middle ring oil hole; when the oil distribution valve moves downward, the lower high-pressure oil hole communicates with the oil outlet ring cavity, and the first oil chamber also communicates with the large pitch oil circuit; when the oil distribution valve moves upward, the lower high-pressure oil hole communicates with the high-pressure oil ring cavity, and the second oil chamber also communicates with the large pitch oil circuit. The oil distribution valve of the present invention is small in volume, light in weight, fast in response speed, small in inertia, the adjustment speed reaches the position at one time, and the adjustment accuracy is high, which ensures the stability of the system and increases the service life.

The utility model provides an elevator speed governor lifting device which solves the problems that due to the fact that an existing elevator speed governor lifting device is too long and occupies a large space, the depth of a pit of an elevator shaft is increased, and the adaptability of elevator products is affected. According to the technical scheme, the elevator speed governor lifting device comprises a lifting plate used for connecting an upper speed governor steel wire rope head and a lower tensioning device rope head of an elevator, a lantern ring is arranged at the upper end of the lifting plate, a plurality of steel wire rope clamps are sequentially arranged in the middle of the lifting plate in the longitudinal direction, and a pin shaft used for being connected with a safety tongs lifting wrench is arranged at the lower end of the lifting plate. And the rod part of the pin shaft is provided with a gasket. The length of the lifting device is shortened, the structure is simple, the lifting device is firmly connected with a steel wire rope and a lifting wrench, the pit design depth is reduced, and the product competitiveness is enhanced.

The invention provides a bidirectional self-locking speed governor for an elevator. The bidirectional self-locking speed governor comprises a box body, a centrifugal clutch mechanism and a worm and turbine transmission mechanism, wherein the centrifugal clutch mechanism and the worm and turbine transmission mechanism are arranged in the box body; the toothed guide rail is meshed with a driving gear in the centrifugal clutch mechanism, so that the synchronous movement of the bidirectional self-locking speed limiter for the elevator and the elevator car is realized; the standby and starting work of the two-way self-locking speed limiter for the elevator is achieved through separation and combination of the centrifugal clutch mechanism. When the elevator stalls, the centrifugal part is thrown out of the limiting ejector block clamping the driven shell under the action of centrifugal force, the worm and turbine transmission mechanism connected with the driven shell is driven, and meanwhile the worm and turbine transmission mechanism is driven to achieve work of the elevator two-way self-locking speed limiter. The worm and turbine mechanism can be automatically locked in the working process; after working, the bidirectional self-locking speed limiter for the elevator can be reset by prying a driven shell of a centrifugal clutch mechanism through a turning gear or a tool; the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe are connected, and the accessory guide rail, the brake rod assembly, the bidirectional safety tongs and the rolling guide shoe and external components form a complete elevator system; when the elevator is lifted or falls and stalls, the bidirectional self-locking speed limiter for the elevator automatically drives the brake rod assembly, and the brake rod assembly jacks up the brake shoes in the bidirectional safety tongs to clamp the guide rails to achieve the braking effect.

The present invention relates to a governor pulling force adjusting device, comprising: a base; a governor mounting seat installed on the base for mounting a governor rope pulley; a bit for adjusting the limit screw of the governor rope pulley; a synchronous drive mechanism installed on the base for driving N bits to rotate synchronously to synchronously adjust the limit screws of the governor rope pulley, where N is an integer greater than 1; and a feed mechanism installed on the base for driving the bit to approach or move away from the governor mounting seat. The governor pulling force adjusting device of the present invention realizes synchronous adjustment of the limit screws of the governor rope pulley, making the adjustment of the governor pulling force more accurate and more efficient.

The utility model discloses a kind of elevator speed limiter tensioning anti-jump device, including speed limiter main body, sliding frame and auxiliary mechanism, the lower portion of speed limiter main body is provided with support frame, tensioning wheel is rotatably arranged in the inside of support frame, speed limiter main body is equipped with rope between tensioning wheel, sliding frame is sleeved on tensioning wheel, sliding frame is slidably installed on support frame, auxiliary mechanism is located in the inside of support frame, auxiliary mechanism is used to carry out automatic lubrication operation to rope, auxiliary mechanism includes limit frame and cavity, limit frame is sleeved in the outside of tensioning wheel. The utility model is cooperated by using limit frame, oil-absorbing cotton, supporting piece, driving part and fixing part, limit frame is covered to protect the outside of tensioning wheel, make supporting piece push oil-absorbing cotton that absorbs oil upward movement, make oil-absorbing cotton and rope adhere, to carry out automatic lubrication to rope, and then be favorable to the automatic lubrication operation of tensioning wheel and rope, to optimize operation step.

The utility model discloses an auxiliary control device of elevator safety tongs, which belongs to the technical field of elevator safety and comprises a safety tongs box, and an auxiliary brake mechanism is mounted in the safety tongs box. By arranging the auxiliary braking mechanism, the emergency braking and stopping effect of the elevator is improved, in the normal operation process of the elevator, the speed sensor monitors the speed of the elevator in real time and transmits data to the central controller, the speed governor sensor monitors the state of the speed governor at the same time, it is guaranteed that the speed governor can work normally when needed, and the safety of the elevator is guaranteed. When the speed of the elevator exceeds a set value, after the central controller judges that an abnormal condition exists, an auxiliary braking structure is started immediately, that is, after an air cylinder telescopic rod receives a control signal, a limiting clamping block is contracted, limiting on a sliding block is canceled, the weight of the elevator drives a steel wire rope to be lifted upwards, and an auxiliary wedge block moves upwards; the distance between the auxiliary wedge block and the main wedge block is gradually shortened, and the clamping force on the steel wire rope is improved.

The utility model discloses a connector of an external engine speed limiter, belongs to the technical field of installation of engine speed limiters, and solves the problem that an existing speed limiter is inconvenient to connect with a crankshaft. The connecting device comprises a connecting sleeve and a connecting shaft, one end of the connecting sleeve is provided with a crankshaft end flange capable of being connected with a crankshaft flange, one end of the connecting shaft is provided with a speed governor end flange capable of being connected with a rotating shaft flange of an engine speed governor, and an inserting groove is formed in the connecting sleeve. The other end of the connecting shaft is inserted into the inserting groove in a sliding mode from the other end of the connecting sleeve, at least two limiting grooves extending in the axial direction of the connecting sleeve are formed in the position, corresponding to the inner wall of the inserting groove, of the connecting sleeve in an inwards-concave mode, and limiting blocks with the number consistent with that of the limiting grooves are arranged on the outer wall of the other end of the connecting shaft in a protruding mode. The limiting blocks are slidably inserted into the limiting grooves in a one-to-one correspondence mode. According to the connector, the connection reliability between the engine speed governor and the crankshaft can be improved, and the service life of the engine speed governor and the crankshaft can be prolonged.

The application discloses an oil-electric hybrid unmanned aerial vehicle power system and relates to the technical field of unmanned aerial vehicles and aircrafts. The application is characterized by the coaxial direct-drive direct-connection cooperation design of the propeller, the engine and the direct-current permanent magnet motor, simple structure, reliability, durability and high power-to-weight ratio. The oil-electric hybrid system is formed by the cooperation of the oil engine and the permanent magnet direct-current motor. The permanent magnet direct-current motor can start the engine and convert the excess power into electric energy to charge the storage battery. The torque of the engine can be changed by the direct-current bidirectional electric governor, so the speed of the propeller can be accurately controlled, and a three-in-one machine is formed. Different displacement engines can be matched with corresponding power direct-current permanent magnet motors. Different power ratios can be used for different models of unmanned aerial vehicles and multi-rotor aircrafts. Different accurate control and speed regulation ratios can be combined by the cooperation of different power engines and direct-current permanent magnet motors.

The utility model discloses a new energy electric rail conveyor and a braking mechanism thereof, the new energy electric rail conveyor comprises a traction vehicle head arranged on a rail, at least one braking mechanism arranged on the traction vehicle head and at least one driving wheel arranged on the lower portion of the traction vehicle head, the traction vehicle head is provided with at least one motor, and the motor is used for providing power to enable the driving wheel to rotate. The braking mechanism comprises at least one electromagnetic brake, at least one transmission assembly and at least one speed limiter. According to the new energy electric track conveyor, the electromagnetic brake and the speed limiter are arranged, when power is cut off, the brake part of the electromagnetic brake is locked on the kinetic energy output part of the motor, the kinetic energy output part of the motor is braked, and therefore the new energy electric track conveyor can be effectively braked; the speed governor is configured to apply at least one resistance to the transmission assembly, so that the transmission assembly is decelerated, and the speed of the new energy electric rail conveyor can be effectively reduced in the downhill process.

The invention discloses an elevator speed governor dynamic action performance detection device and method, and relates to the field of elevator detection.The elevator speed governor dynamic action performance detection device comprises a base, a driving wheel is arranged at the output end of a rotary driving mechanism through a speed change assembly, and detection wheels are movably arranged on fixing plates on the two sides of the bottom of the driving wheel through swing arms; a reset assembly is arranged between the two swing arms, and a guide mechanism is arranged between the swing arms and the fixing plate. The guide mechanism comprises worms which are respectively arranged in the axial directions of the two swing arms in a mirroring manner; two worm gears are arranged on the rotating shaft in a mirroring manner; according to the detection device, automatic centering and locking of the detection device and the rope wheel of the speed governor are achieved through the guide mechanism composed of the worm and the worm gear, the detection wheel which is separated from the driving wheel and is directly attached to the rope wheel in a pressed mode and the velometer of the detection wheel are arranged, and almost-non-sliding pure rolling contact is formed between the detection wheel and the rope wheel. Therefore, the real rotating speed signal of the rope wheel can be directly acquired in real time.

The present invention relates to a method for simulating an engine failure on a rotorcraft (1) comprising several engines (10) for setting a rotary wing (6) in motion. The method includes a training mode comprising control with a governor (30) for each engine (10) to simulate an engine failure, this control including a limitation of the power of each engine (10) to a respective control limit. The training mode comprises the following steps: i) determining, with the governor (30), on the one hand, a maximum mass based on at least external conditions and, on the other hand, an initial mass of the rotorcraft (1) based on at least the empty mass of the rotorcraft (1), the mass of a crew present in the rotorcraft (1), and an estimated mass of fuel on board; ii) comparing, with the governor (30), the initial mass to the maximum mass; iii) determining, with the governor (30), each control limit based on said comparison.Abbreviated figure: figure 1.

The utility model relates to the technical field of elevator speed governor testing, and discloses an elevator speed governor testing device which comprises a box body, one side of the top end of the box body is provided with a rotationally connected box cover, a control panel is arranged in the box body, one side of the control panel is provided with at least one control switch and a plurality of insertion holes, and the control switch is connected with the insertion holes. A connecting line is inserted into the insertion hole, a testing head is arranged at the tail end of the connecting line, and a supporting structure convenient to disassemble and assemble is arranged at the bottom end of the testing head. Compared with the prior art, the utility model has the advantages that the test head can be conveniently held by a hand and can be supported at the same time, high overall stability is ensured, the accuracy of a test result is ensured, and the reliability of test data is further improved.

The invention relates to the technical field of elevators, in particular to a high-speed elevator speed limiter tensioning device which comprises a base and a tensioning wheel rotationally connected to the base, a connecting hole is formed in the base, a swing arm is further pivoted to the base, the free end of the swing arm is rotationally connected with a pulley, and the pulley is located above the tensioning wheel. The middle section of the swing arm is fixedly connected with a balance weight installation box used for being connected with a balance weight module in an inserted mode. A trigger boss is arranged at the bottom of the swing arm, a pressure switch used in cooperation with the trigger boss is installed on the base, and the pressure switch is located below the swing arm and located on the path where the trigger boss swings downwards along with the swing arm. According to the tensioning device, automatic constant-force tensioning of the gravity of the steel wire rope is achieved.

Fuel system failure and / or leak detection is disclosed for a spark-ignited combustion engine that combusts hydrogen fuel. Pressure measurements of the hydrogen fueling system are taken to determine a rail pressure error based on a differential between the commanded rail pressure and the sensed rail pressure. A hydrogen fuel system failure or leak condition is detected in response to the rail pressure error falling outside an allowable rail pressure governor error that varies based on engine speed.

The utility model provides a speed governor base quick positioning and welding deformation prevention tool which comprises a large body plate and a bottom plate, the length of the bottom plate is larger than or equal to the width of a speed governor base, the bottom plate is transversely, vertically and fixedly connected to the bottom end of the large body plate in the width direction, and two protrusions are arranged on the bottom plate in the front end direction of the large body plate. The protrusions are in concave-convex clearance fit with center holes of a left bottom plate and a right bottom plate of the speed governor base, the height of the protrusions is smaller than the depth of the center holes, the supporting plates are parallel to the bottom plates and fixed to the middle of the large body plate, the supporting plates abut against supporting arms of the speed governor base 2, and the baffle is fixed to the front end of the large body plate and parallel to the bottom plates. The length of the baffle is smaller than the distance between the inner sides of two supporting arms of the speed governor base, the distance between the baffle and the bottom plate is subtracted from the length of the supporting arms of the speed governor base to obtain a small distance, a protrusion in concave-convex clearance fit with a center hole of a top plate of the speed governor base is arranged on the baffle, and the height of the protrusion is larger than the sum of the small distance and the depth of the center hole of the top plate of the speed governor base. The supporting plate is fixed to the front end of the large body plate and is parallel to the bottom plate, the upper surface of the supporting plate abuts against a top plate of the speed limiter base, and the pressurizing devices pressurize the top plate of the speed limiter base. All parts of the speed governor base can be conveniently positioned, and the quality of the speed governor base is improved.

In a premixing apparatus that mixes a fuel gas with air and supplies an air-fuel mixture to a burner through a fan, includes a main valve, a zero governor, and a variable throttle valve which are interposed from an upstream side downward in sequence in a gas supply passage, of which an downstream end is connected to a gas suction part that is provided in an air supply passage on an upstream side of a fan, and carries out a first control that regulates an opening degree of the variable throttle valve so that an excess air ratio of the air-fuel mixture, which is indexed based on a flame current that is detected by a flame rod which is exposed in flames of the burner, and a second control that, at time of a post-purge operation, if the flame rod detects the flame current, it will be decided that an open trouble of the main valve occurs and the opening degree of the throttle valve will be tightened till a minimum opening-degree which is set so that the burner is extinguished.

The present invention relates to a nuclear speed governor hardware-in-the-loop simulation verification system and a method for using the system, which includes a diesel engine model, a simulation host, a simulation host host computer, an output module, a voltage-to-current module, a speed governor, a speed governor host computer, an actuator, a current-to-voltage module, and an input module; the diesel engine model is loaded into the simulation host, the simulation host is connected to the simulation host host computer, the output module of the diesel engine model is connected to the voltage-to-current module via a hard line, the voltage-to-current module is connected to the speed governor, the speed governor is connected to the actuator, the actuator is connected to the current-to-voltage module via a hard line, the current-to-voltage module is connected to the input module of the diesel engine model, and the obtained voltage signal is transmitted to the diesel engine model to form a closed loop. The present invention replaces the emergency diesel engine in connecting to the electronic speed governor, verifies the basic functions of the speed governor and the grid-connected function, does not damage the emergency diesel engine, and is convenient to verify.

The utility model discloses a quick lifting device for a high-speed elevator speed governor, which relates to the technical field of elevator maintenance equipment and comprises a top plate, an elevator speed governor is mounted at one end of the top of the top plate, a steel wire rope is mounted on a turntable of the elevator speed governor, and a support frame is mounted at the top of the top plate close to the elevator speed governor. According to the rapid lifting device for the high-speed elevator speed limiter, when a bidirectional threaded rod rotates, two movable blocks can relatively move according to the rotating direction of threads, and when the movable blocks move, a connecting rod can drive a supporting plate to move up and down, so that a steel wire rope is rapidly lifted to be separated from a speed limiting wheel; the size of the outer ring face formed after the two limiting blocks are spliced is matched with the size of the inner side wall of the through hole in the top of the fixing frame, when the steel wire rope is limited by the limiting plate and accidentally falls off, the two limiting blocks can synchronously descend and enter the through hole, the steel wire rope is secondarily limited and fixed, and therefore the anti-falling effect is achieved.

The invention relates to an elevator speed limiter and an elevator. The elevator speed governor comprises a supporting assembly, a rope wheel mechanism, a ratchet wheel mechanism and a braking mechanism, the supporting assembly comprises a rack and a mounting shaft, and the mounting shaft is arranged on the rack in a penetrating mode. The rope wheel mechanism comprises a rope wheel, a first centrifugal hammer, a second centrifugal hammer and a connecting rod, the rope wheel is rotatably mounted on the mounting shaft, the first centrifugal hammer and the second centrifugal hammer are rotatably mounted on one side of the rope wheel, one end of the connecting rod is rotatably connected to the first centrifugal hammer, and the other end of the connecting rod is rotatably connected to the second centrifugal hammer. The ratchet mechanism comprises a pawl and a ratchet, the pawl is movably mounted on the other side of the rope wheel, the first centrifugal hammer is connected with the pawl, the ratchet is mounted on the mounting shaft, and the first centrifugal hammer is used for driving the pawl to be meshed with the ratchet. The brake mechanism is movably installed on the rack and connected with the ratchet wheel. The elevator speed limiter and the elevator have the advantages of being small in occupied space and good in stability.

The present invention discloses a propeller speed regulator beta valve assembly, wherein a small-pitch end plug is provided at one end of the valve, and a U-shaped fork is fixed at the other end; a bushing is fixed in the inner hole of a circular mounting opening protruding from a speed regulator housing by interference fit; a micro-clearance of one end of the valve with the small-pitch end plug is assembled in the bushing; a return spring sleeved on the valve and fixed in the U-shaped fork groove is crimped on the adjusting washer; a cap is sleeved on the U-shaped fork, the adjusting washer and the outer circle of the circular mounting opening and fixed on the circular mounting opening; an oil groove is provided on the valve, and the bushing is provided with a high-pressure oil outlet and inlet connected to the oil groove, and the inner cavity of the bushing at the end of the small-pitch end plug is an oil return cavity; under normal working conditions, the high-pressure oil outlet is connected to the oil groove, and when the small-pitch limit is applied, the small-pitch end plug just closes the high-pressure oil outlet. The propeller speed regulator installed with the present invention has the function of small-pitch limit fixed-distance protection, and has the functions of β control and reverse propeller, so that the propeller structure becomes simple, the volume becomes smaller, and the weight becomes lighter.

The utility model relates to the technical field of speed limiter production equipment, in particular to a speed limiter wheel side hole machining tool. Comprising a vertical plate, at least one fixing seat is detachably mounted on the vertical plate, a bearing column is arranged in the center of the fixing seat and used for bearing a to-be-machined speed governor rope wheel, a fixing piece is arranged in the bearing column and used for limiting axial displacement of the to-be-machined speed governor rope wheel, and the left side and the right side of the fixing seat are each slidably connected with two limiting columns. The limiting column is slidably connected with the vertical plate and used for limiting the radial displacement of the speed limiter rope sheave to be machined. Through cooperation of the bearing column and the fixing piece and accurate limiting of the limiting column, axial and radial movement of the speed governor rope wheel in the machining process is effectively prevented, the machining precision and stability are remarkably improved, meanwhile, the tool is stable in structure and convenient and fast to install, and the production efficiency and the product quality are improved.

The utility model discloses a portable speed limiter dynamic test trigger device, which belongs to the technical field of speed limiters and comprises a fixing clamp upper cover plate, two fixing clamp plates are mounted on the fixing clamp upper cover plate, a hand screw is arranged on one fixing clamp plate, two support plates are mounted on the plate surface of the other fixing clamp plate, and the fixing clamp upper cover plate is provided with a handle. Through holes are formed in the two supporting plates respectively, convex ball shafts penetrate through the through holes in a sliding mode, convex balls are installed at one ends of the convex ball shafts, and convex ball shaft upper cover plates are installed at the tops of the two supporting plates; the other end of the convex ball shaft is fixedly sleeved with a clamping plate, and a power spring is connected between the clamping plate and the supporting plate. A rotating shaft is installed on the fixing clamp upper cover plate and sleeved with a limiting pawl, one end of the limiting pawl abuts against the clamping plate, and the other end of the limiting pawl is connected with a pull wire. The utility model solves the problem that the speed governor of the elevator in use in the prior art is not provided with a high-speed trigger device and cannot carry out a speed governor-safety tongs linkage test, and is simple and convenient to operate and strong in practicability.