ENERGY-SAVING MODEL OF TRACTION-TYPE ELEVATOR AND ENERGY-SAVING METHOD THEREFOR
First Claim
1. An energy-saving traction-type elevator comprising at least one counterbalance unit, whereineach counterbalance unit comprises a traction machine, an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, a controller provided in a machine room and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft;
- an output shaft of said traction machine is connected with an input of the automatic transmission;
an output shaft of the automatic transmission is connected with one end of a rotating shaft of the hoist-type lifting mechanism through a first coupling; and
the other end of the rotating shaft of the hoist-type lifting mechanism is connected with a motor shaft of the power-generating electric motor;
the car and the fixed counterweight are suspended on the traction machine through steel cables;
the car is internally provided with a weighing device;
the balancing counterbalance is suspended on the hoist-type lifting mechanism through a steel cable;
the balancing counterbalance is installed in a vertically disposed guide rail; and
the balancing counterbalance is provided with a position sensor on the upper and lower sides respectively;
the traction machine, the automatic transmission, a clutch, the power-generating electric motor, the weighing device and the position sensors are all connected with the controller through cable and are under the control of the controller.
1 Assignment
0 Petitions
Accused Products
Abstract
An energy-saving traction-type elevator and an energy-saving method therefor are presented. The traction-type elevator comprises at least one counterbalance unit, each counterbalance unit comprising a traction machine, an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, and a controller provided in a machine room, and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft. The energy-saving method applies the principle of moment balance, whereby adding a separate elevator balancing counterbalance to achieve intelligent counterbalancing of the elevator means so that the elevator achieves relative balance, thereby reducing the traction moment and rate of work of the traction machine. When the potential energy of the elevator balancing counter-balance builds up to a high position, the power-generating electric motor can perform centralized power generation, aiding in energy recovery and use.
15 Citations
15 Claims
-
1. An energy-saving traction-type elevator comprising at least one counterbalance unit, wherein
each counterbalance unit comprises a traction machine, an automatic transmission, a hoist-type lifting mechanism, a power-generating electric motor, a controller provided in a machine room and a car, a fixed counterweight and a balancing counterbalance provided in an elevator shaft; -
an output shaft of said traction machine is connected with an input of the automatic transmission;
an output shaft of the automatic transmission is connected with one end of a rotating shaft of the hoist-type lifting mechanism through a first coupling; and
the other end of the rotating shaft of the hoist-type lifting mechanism is connected with a motor shaft of the power-generating electric motor;the car and the fixed counterweight are suspended on the traction machine through steel cables;
the car is internally provided with a weighing device;
the balancing counterbalance is suspended on the hoist-type lifting mechanism through a steel cable;
the balancing counterbalance is installed in a vertically disposed guide rail; and
the balancing counterbalance is provided with a position sensor on the upper and lower sides respectively;the traction machine, the automatic transmission, a clutch, the power-generating electric motor, the weighing device and the position sensors are all connected with the controller through cable and are under the control of the controller. - View Dependent Claims (2, 3, 4, 11, 12)
-
-
5. An energy saving method of an energy-saving traction machine, said method comprising the following steps:
-
a. acquiring an overall weight value of the car in real time, converting the weight value into a control signal and sending the control signal to a controller, by the weighing device; b. comparing the acquired weight value and a preset value range and controlling the automatic transmission to perform an energy-saving operation, by the controller, the operation being as follows; when the weight value is lower than the lower limit of the set value, the automatic transmission is started to drive the hoist-type lifting mechanism to increase or decrease the balancing counterbalance, and transmit the torque generated by lifting the balancing counterbalance to the car, wherein, the sum of the rotating torque generated by the balancing counterbalance and the rotating torque generated by the car is equal to the rotating torque generated by the fixed counterweight; when the counterweight is within the range of the set value, the two ends of the steel cable on the traction machine are stressed to be balance while the clutch opens, and the balancing counterbalance does not take part in elevator movement; when the weight value is higher than the upper limit of the set value, the automatic transmission is started to drive the hoist-type lifting mechanism to increase or decrease the balancing counterbalance, and transmit the torque generated by lifting the balancing counterbalance to the fixed counterweight, wherein, the sum of the rotating torque generated by the balancing counterbalance and the rotating torque generated by the fixed counterweight is equal to the rotating torque generated by the car; c. lifting or descending the car by the traction machine; d. when the balancing counterweight moves to reach the upper early warning position sensor, triggering the upper early warning position sensor to send an early warning signal; when the car moves to the nearest level, controlling the power-generating electric motor to be started by the controller to descend the balancing counterbalance to a safe position, and then repeating steps a, b and c; d. when the balancing counterbalance moves to reach the lower early warning position sensor, triggering the lower early warning position sensor to send an early warning signal; when the car moves to the nearest level, controlling the power-generating electric motor to be started by the controller to lift the balancing counterbalance to a safe position, and then repeating steps a, b and c; when the car triggers the upper or lower limit position sensor when moving to the nearest level, stopping the elevator from running, and starting the power-generating electric motor to move the balancing counterbalance to a safe position, by the controller, and then repeating steps a, b and c. - View Dependent Claims (6, 7, 8, 9, 10, 13, 14, 15)
-
Specification