75 results about "Governor" patented technology

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 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 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 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 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 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.

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 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 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.

The elevator speed limiter comprises a longitudinal frame, a stable lifting mechanism, a speed limiting clamping mechanism and a speed limiting auxiliary mechanism, the stable lifting mechanism comprises a driving wheel, a driven wheel, a belt, a lead screw, a threaded block and an elevator plate, and the speed limiting clamping mechanism comprises a speed reducing pipe, a slope plate, a moving block, a spring clamping plate, an inner moving ring and a moving ring. According to the speed limiting clamping mechanism, through the inclined sliding design of a slope plate and a moving block on the inner wall of a speed reducing pipe and cooperation of an inner moving ring and a moving ring, step-by-step clamping adjustment of a spring clamping plate on a lead screw is achieved, the speed limiting auxiliary mechanism controls movement of the moving ring and the inner moving ring through rotation of a rotating ring, an upper jacking rotating plate, a jacked rotating plate and other components, and the speed limiting effect is achieved. The clamping spring plate can dynamically adjust the clamping force, and due to the design, the device can adjust the clamping process in real time according to the speed change of the elevator.

The utility model discloses an on-line calibrator for an elevator speed governor, which belongs to the field of elevator detection equipment, and comprises a hinge, detection machine bodies, a test wheel, a balancing weight and an electrical detection joint, and the on-line calibrator is provided with double detection machine bodies with hinged structures, so that the equipment can clamp a speed governor rope through the test wheel of the double detection machine bodies to measure the speed of the speed governor rope. The electric detection connector of the detection machine body can be used for capturing a switch signal of the speed governor, so that after an elevator speed governor rope is separated from an elevator car at the top of the elevator car, the speed governor rope is driven by a balancing weight or other heavy objects to simulate falling of the elevator car so as to detect the speed governor, and the electric and mechanical action speed of the speed governor can be obtained; the bidirectional speed governor can be tested only by changing the rope, the device is simple and portable, low in manufacturing cost, simple and easy to operate, the testing time can be greatly saved, meanwhile, testing operation can be carried out by a single person, a speed governor protective cover and a lock wrench do not need to be disassembled to clamp the speed governor rope to be separated, and the testing danger is reduced.

This elevator device is provided with a speed governor that is provided with: a pulley; a flying pendulum which is displaced according to the rotation speed of the pulley; a ratchet wheel for operating the emergency stop device; a claw that is displaceable together with the pendulum and engages with the ratchet; and a biasing member that biases the claw such that the claw does not disengage from the ratchet when the claw engages with the ratchet. It is preferable that the biasing member does not bias the claw before the claw engages with the ratchet wheel and the emergency stop device operates, and that the biasing member biases the claw such that the claw does not disengage from the ratchet wheel when the claw engages with the ratchet wheel and the emergency stop device operates.

The utility model relates to the technical field of elevators, in particular to an elevator speed governor with a rotating wheel oil sludge impurity automatic scraping device. The speed governor main body comprises a base which is fixed at the bottom of the speed governor main body. A cleaning mechanism is arranged on the speed limiter body and used for cleaning oil sludge impurities on a rotating wheel in the speed limiter body, the cleaning mechanism comprises a body assembly, the body assembly comprises a mounting base fixed to the lower end of the interior of the speed limiter body, a support is pivoted to the right end of the mounting base, and a shaft rod is rotatably mounted in the support; the output end of the electric push rod stretches out and draws back to drive the shaft rod to drive the scraping head on the support to make contact with the rotating wheel, so that the rotating wheel can scrape away oil sludge impurities attached to the surface of the rotating wheel through the scraping head in the clockwise rotating process, and the normal use effect of the speed limiter body is guaranteed. After maintenance is finished, the output end of the electric push rod extends out of the driving shaft rod to drive the scraping head on the support to be separated from the rotating wheel, and continuous friction with the rotating wheel is avoided.

The utility model discloses a novel lifting mechanism, which belongs to the technical field of elevators, and comprises two guide rails, the two ends of a lifting rod are fixedly connected with pulling mechanisms, the two ends of the lifting rod are fixedly connected with pulling plates respectively, and the front ends of two upright posts are fixedly connected with resetting mechanisms; and the rear ends of the two pulling plates are slidably connected with locking mechanisms. According to the elevator overspeed protection device, elevator overspeed protection is achieved through a mechanical linkage mechanism, a double-state control mode is achieved, it is guaranteed that the system is kept in a locking state in a normal state, and quick response and braking execution are achieved under the emergency situation; in the normal locking stage, the tension spring pretightening force maintains static locking of the lifting rod and the fixing plate, and the safety gear component and the guide rail are kept in a non-contact state; in the emergency triggering stage, the speed governor drives the fixing plate to deflect through the pull rope, the lifting rod is driven to rotate, then the sliding rod is pushed to move upwards through the pull plate and the sliding groove, the safety gear component makes contact with the guide rail, clamping force is generated, and forced braking is achieved.

The present application relates to a kind of test device and its method for testing elevator speed limiter performance, comprising: test frame, inside formation for test lift passage;Main rope, hang around on traction machine;Landing gear, it is set in the side of the traction machine and is connected to the main rope, car frame is set below the landing gear and is connected by unhooker;Counterweight frame, it is set in the other side of the traction machine and is connected to the main rope;Speed limiter, it is set in the top of the test frame;Rope clamp, it is set in the top of the test frame;Data collector, for collecting the running speed of the car frame, the wheel speed of the speed limiter, the lifting force of the speed limiter rope, electrical action signal and mechanical action signal.It can test the speed limiter performance when car frame free fall occurs at rated speed and car frame falls at different acceleration under static state.

The application discloses a kind of aircraft control method and device, it is related to aircraft control technology, the method is used for the control of dual-engine or multi-engine fixed-wing aircraft, aircraft control device includes throttle control device and throttle bus, and at least two electronic speed controllers connected with throttle bus, each electronic speed controller controls an electric motor, and each electronic speed controller sends the first electric governor data of itself to throttle bus, and the first electric governor data includes the first output throttle value and first rotating speed of itself;Second electric governor data is obtained from throttle bus, and the second electric governor data includes the second output throttle value and second rotating speed of other electronic speed controllers except itself;Third output throttle value is calculated according to second electric governor data, and third output throttle value is used to adjust the rotating speed of electric motor controlled by each electronic speed controller itself, solve the problem that the rudder of aircraft is controlled to offset the yaw force generated due to different thrust in prior art, inconvenient operation.

The invention belongs to the technical field of unmanned aerial vehicle systems, and particularly relates to a combined type large-load multi-rotor unmanned aerial vehicle system, which comprises a sensing module, a multi-rotor unmanned aerial vehicle control module and a multi-rotor unmanned aerial vehicle control module, the control module is used for performing algorithm processing on the data acquired by the sensing module to generate a corresponding control instruction; and the execution module is used for driving a motor and an electronic speed controller according to the control instruction to adjust the rotating speed and attitude of a propeller so as to realize flight control of the unmanned aerial vehicle. According to the invention, lift force and gravity unbalance caused by load increase can be avoided, the problem of unstable flight caused by external interference is effectively prevented, stable flight can be ensured under the condition of large load, and the load capacity and the flight efficiency are improved to a certain extent.

An apparatus comprising a propeller and an engine configured to drive the propeller. A controller is configured to control fuel flow to the engine to decelerate the propeller responsive to detection of a propeller speed exceeding a predetermined threshold.

The invention discloses a pet accompanying driving device capable of being remotely monitored, a driver heat dissipation mechanism comprises a bottom air exhaust driving assembly and two side air exhaust driving assemblies, and the bottom air exhaust driving assembly comprises first reference positioning connecting rods fixedly connected to the bottoms of propellers of two unmanned aerial vehicle type pet accompanying devices; the bottoms of the two first reference positioning connecting rods are fixedly connected with power input end first synchronous wheels, and the bottoms of the two sides of the unmanned aerial vehicle type pet accompanying device assembling shell are fixedly connected with second reference positioning connecting rods. And heat in the assembly shell of the unmanned aerial vehicle type pet accompanying device is synchronously discharged, so that internal electronic components are prevented from being damaged due to the fact that the interior of the assembly shell of the unmanned aerial vehicle type pet accompanying device is overheated, and the service life of the electric speed controller driver mechanism of the unmanned aerial vehicle type pet accompanying device in the using process is prolonged.

The utility model provides an elevator speed measuring device, and relates to the elevator detection technical field, the elevator speed measuring device comprises a magnetic attraction base, a direction adjusting assembly, a clamping assembly, a sensor and a magnet, the magnetic attraction base is used for being magnetically attracted on the surface of an elevator speed governor, one end of the direction adjusting assembly is connected with the magnetic attraction base, and the other end of the direction adjusting assembly is connected with the clamping assembly. One end of the direction adjusting assembly is connected with the fixed end of the clamping assembly, the other end of the direction adjusting assembly is connected with the fixed end of the clamping assembly, the clamping end of the clamping assembly clamps the sensor, the magnet is installed on an outer wheel of the elevator speed limiter and moves along with the outer wheel, and the sensor is used for collecting the rated speed of the elevator speed limiter through the magnet. According to the utility model, through the magnetic base, the direction adjusting assembly, the clamping assembly, the sensor and the magnet, non-contact speed measurement can be directly carried out on the elevator speed governor, operator equipment of manufacturers and maintenance units is not needed, and more objective and accurate speed measurement results can be obtained.

The utility model discloses elevator speed governor action speed detection platform, including quick locking assembly, quick locking assembly includes concave strip and convex strip, the outer ring of main shaft rod four -around fixed installation concave strip, the outer ring of external connection axle four -around fixed connection convex strip, convex strip protruding end activity joint concave strip groove end, quick locking assembly still includes rectangular groove, dismounting spring, clamping block and clamping groove, the middle part of convex strip is seted up rectangular groove, and dismounting spring and clamping block are connected in rectangular groove, and clamping block is located above dismounting spring, and the middle part of concave strip is seted up clamping groove, and clamping block is connected in clamping groove. The utility model can guarantee the concentricity of main shaft rod and external connection axle through the accurate matching of geometric shape, reduce the eccentric problem of shafting caused by bolt hole error or uneven assembly, reduce additional radial force and vibration, make motor output speed more stable, thereby improve the precision of speed governor action speed detection.

The invention discloses a friction detection system for an elevator speed governor, which belongs to the technical field of elevator safety detection, and comprises a supporting mechanism, a friction detection mechanism, a friction detection mechanism and a control mechanism, the invention further discloses a friction detection method for the elevator speed governor. The friction detection method comprises the following steps that S1, system initialization and parameter setting are conducted; s2, constant-speed driving control; s3, collecting and processing parameters; s4, calculating friction parameters; s5, outputting and judging a result; s6, data storage and ending; constant-speed rotation control of the speed governor wheel is achieved through the speed reduction stepping motor, the tension sensor and the rotating speed sensor are combined, accurate quantitative detection of the frictional resistance moment and the friction coefficient is achieved, the detection error is reduced, and the defect that quantification cannot be achieved through traditional manual detection is overcome; and meanwhile, a temperature compensation algorithm is introduced to further eliminate the influence of the environment temperature on the detection result and improve the detection reliability.

The invention relates to the technical field of elevator cars, in particular to an elevator car speed governor. The elevator car speed limiter specifically comprises a driving wheel and a speed limiting wheel. The speed limiting wheel is located in the driving wheel, the speed limiting wheel is fixedly connected with the diversion sheave, the speed limiting wheel, the driving wheel and the diversion sheave are coaxially arranged, and the linkage assembly is connected with the driving wheel and the elevator braking component; the speed limiting wheel comprises a wheel body and a plurality of limiting assemblies, the limiting assemblies are elastically connected with the wheel body, the limiting assemblies are contracted in the wheel body or extend out of the wheel body, and the limiting assemblies are separated from or connected with the driving wheel. The speed limiter has the advantages that the structure is simple, and the shaft space occupied by the speed limiter can be effectively reduced in elevator arrangement.

The utility model relates to an elevator speed limiter detection device, and belongs to the technical field of elevator equipment detection. Comprising a friction driving wheel making contact with the outer circumferential wall of a rope wheel of an elevator speed limiter body, the friction driving wheel is connected with a driving motor, a support plate is fixed to the bottom of the driving motor, an inverted-U-shaped clamping plate clamped on a mounting frame plate of the elevator speed limiter body is fixed to the bottom of the support plate, and a rotating shaft is fixed to the lower left corner of the clamping plate; the rotating shaft is rotationally installed on the installation frame plate, an arc-shaped hole coaxial with the rotating shaft is formed in the installation frame plate, an adjusting screw rod is arranged in the arc-shaped hole, the two ends of the adjusting screw rod penetrate through the clamping plates respectively to be connected with locking nuts, and a speed sensor installed on the installation frame plate is arranged on one side of the rope wheel. The lower portion of the driving motor is connected with the support plate, then the clamping plate capable of being installed on the installation frame plate of the elevator speed limiter body is fixed to the support plate, the structure is simple, large installation space cannot be occupied, and the application range is wide.

The utility model relates to the technical field of safety and material manufacturing, a kind of TRT turbine governor cylinder and the anti-drop device of pistol board connection, including servo cylinder and the pistol board ontology fixedly connected to its output end;The utility model can be just the plane contact friction of contact surface is changed to slightly interference fit contact of concave-convex surface inlay by the setting of boss and groove, increase the shear force of adjusting cylinder and pistol board, the shear force of connecting piece is transferred to pistol board and adjusting cylinder, reduce the shear force of connecting piece, prevent connecting piece fracture, ensure the normal connection movement of adjusting cylinder and pistol board, reduce TRT turbine set failure downtime, stationary vane cylinder blade opening normal regulation, it is convenient to adjust blast furnace top pressure, ensure TRT power generation, effectively prevent the occurrence of overspeed accident, simultaneously, by the setting of reinforcing mechanism, pistol board ontology and adjusting cylinder ontology can be fixed, effectively improve the stability of connection, to improve the anti-drop effect.