摘要:
A regulator device for a vehicle door window pane includes a lift arm connected to a door window pane and an equalizer arm rotatably connected to the lift arm, connected to the door and the door window pane. The lift arm includes a through-hole, a flange wall, and a protrusion that defines an annular clearance between the protrusion and the flange wall and protrudes by a greater amount. The equalizer arm includes a first arm in contact with the protrusion, and a second arm in contact with the other side of the lift arm. A rotational axial protrusion rotatably engaged in the through-hole is formed on one of the first and second arms, and a fixing portion fixed to the rotational axial protrusion outside the through-hole is formed on the other of the first and second arms.
摘要:
In an elevator driven by an induction motor and having a slip control device for generating a slip frequency command signal on the basis of an error between a speed command value and a running speed value of the induction motor so as to control a VVVF type inverter which in turn provides a corresponding alternating current of variable voltage and frequency, the inverter having a smoothing capacitor on a D-C side thereof, a control apparatus for stabilizing torque of the induction motor by smoothly changing operation of the induction motor from a powering mode to a regenerative mode, the control apparatus comprising a current detector for detecting charging current of the smoothing capacitor having a portion for detecting polarity of the slip frequency command signal and a unit responsive to the charging current detected by the current detector and the slip frequency command signal generated by the slip control device for changing operation of the induction motor from the powering mode to the regenerative mode only when a voltage value based on the charging current has exceeded a preset reference voltage value after a negative sign of the slip frequency command signal is detected by the polarity detection portion.
摘要:
A magnetic flux detecting coil for detecting a magnetic flux in the air gap between the stator is provided in the stator and rotor of an induction motor, the actual value of the secondary winding crossing magnetic flux is calculated on the basis of the detected output of the detecting coil, this value is compared with the secondary winding crossing magnetic flux command value to correct the secondary winding resistance value, thereby controlling to correct the slip frequency. Thus, the torque produced by the motor can be stabilized irrespective of the temperature rise of the motor.
摘要:
An elevator relevelling control apparatus for controlling the movement of an elevator car (11) such that when the car is misaligned with the landing position of a selected landing floor, the car is restarted and brought into alignment. A traction motor (M) is controlled by a landing means (1) which generates a speed command signal (1a) of a magnitude which increases linearly with the extent of misalignment. First and second position detecting devices (15, 16, 17, 18) are provided in the hoistway to detect misalignment from the landing position by a first or second predetermined distance, respectively. The car is provided with load detecting means (12) for detecting whether or not the car is overloaded. If the load detecting means (12) detects that the car is not overloaded, and a switching device (15, 16) detects that the car is misaligned by a first predetermined distance, a speed command signal (1a) of suitable magnitude is supplied to the traction motor (M), thereby effecting relevelling. If, on the other hand, the car is detected to be in an overloaded state, and a switching device (17, 18) detects that the car is misaligned by a second, greater, predetermined distance, a speed command signal of larger magnitude is supplied to the traction motor (M), whereby the relevelling operation can be commenced with a torque greater than that applied when the car is not overloaded.
摘要:
An apparatus for controlling an elevator having an induction motor for lifting the cage, a speed instruction device which produces a running speed instruction signal for the cage, a speed controller which generates a torque instruction for the induction motor, a current controller which produces a primary current for the induction motor to control it, a first speed detector which is coupled to the induction motor via a mechanism that increases the input speed to the detector and which feeds speed detection signals back to the speed controller, and a second speed detector which is directly coupled to the rotary shaft of the induction motor and which supplies speed detection signals to the current controller.
摘要:
An elevator control apparatus comprises a torque control device for calculating a torque command for a motor for hoisting an elevator cage, a brake which operates in response to a braking command so as to restrain the motor, a brake abnormality detector adapted to operate when a difference between a maximum value and a minimum value of the torque command is less than a predetermined value, and a brake abnormality output circuit which delivers a predetermined signal when an inferior release of the brake has been detected by the operation of the brake abnormality detector.
摘要:
A regulator device for a vehicle door window pane includes a lift arm connected to a door window pane and an equalizer arm rotatably connected to the lift arm, connected to the door and the door window pane. The lift arm includes a through-hole, a flange wall, and a protrusion that defines an annular clearance between the protrusion and the flange wall and protrudes by a greater amount. The equalizer arm includes a first arm in contact with the protrusion, and a second arm in contact with the other side of the lift arm. A rotational axial protrusion rotatably engaged in the through-hole is formed on one of the first and second arms, and a fixing portion fixed to the rotational axial protrusion outside the through-hole is formed on the other of the first and second arms.
摘要:
An elevator safety device in which a counterweight cam is attached to the counterweight and top terminal landing final limit switches are disposed below the bottom terminal landing of the hoistway so that it is operated by the counterweight cam. The top terminal landing final limit switches only need to be provided in accordance with the counterweight buffer stroke, regardless of to what extent the car has been flung upward, with the result that fewer final limit switches are required.
摘要:
A safety device for an elevator which detects a trouble of the control device quickly to apply an emergency brake, thereby to ensure the safety of the people in the cage. The elevator safety device is so designed that the harmonic wave component produced by an inverter is detected with the aid of a band-pass filter, and when the harmonic wave component thus detected becomes abnormal, an emergency stop instruction is produced.
摘要:
An apparatus for controlling the arrival of an elevator cage at a target elevator floor in which the elevator cage is not stopped at an intermediate position between adjacent floors even when a detection displacement occurs when the actual cage position and a calculated cage position do not correspond wherein said cage is stopped at said target floor when it is detected that said actual cage position is less than or equal to said calculated elevator position and said cage is stopped at an adjacent floor to said target floor when said calculated cage position is greater than said calculated cage position.