Elevator equipment and its control device
A technology of control device and braking device, applied in the directions of transportation, packaging, elevators, etc., can solve the problems of damage and slippage of the contact surface between the main sling and the sheave, and achieve the effect of stabilizing the braking force and inhibiting the slippage.
Inactive Publication Date: 2017-08-04
HITACHI LTD
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Problems solved by technology
[0004] However, when the traction machine undergoes a sudden acceleration change, slippage is likely to occur between the main rope and the sheave, and when slippage occurs, the respective contact surfaces of the main rope and the sheave are damaged.
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[0021] An embodiment of the elevator apparatus of the present invention will be described below with reference to the drawings. figure 1 is a schematic diagram of the elevator installation 1 of the present invention, figure 2 yes means figure 1 The shown flowchart is a flow chart of the processing contents of the control device 7 for the brake devices 14, 15 included in the elevator installation.
[0022] Elevator equipment 1 has an elevator car 3 raised and lowered in a hoistway 2 formed in a building structure, a counterweight 5 raised and lowered in a direction opposite to the elevator car 3, and one end connected to the elevator car 3 side and the other end connected to the counterweight. The main sling 4 of the heavy 5 side connection. A machine room (not shown) is provided on the top of the hoistway 2, and a traction machine 11 for lifting and lowering the elevator car 3 and the counterweight 5 by winding the main rope 4 and winding the main rope 4 are arranged in the...
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In an elevator device, during emergency braking in a high speed running state, the slip generated between a main sling and a rope wheel can be suppressed, and stable brake force can be obtained from deceleration to an elevator car stop. The elevator device (1) includes a tractor (11) in which the main sling (4) is erected, a plurality of brake devices (14, 15) for braking the tractor, a speed controller (16) provided with a speed detection device (21) for detecting the speed of the elevator car (3), and a control device (7) for controlling the brake devices. The control device includes an abnormal detection device (23) for detecting the abnormity of the elevator device, an action control device (24) for indicating the brake device action, and a list (25) for storing elevator car speed during brake device action and brake device action order. The action control device modifies the beginning speed of the elevator car action which indicates the brake device beginning action according to the running status of the elevator car including a moving direction and an accelerated speed.
Description
technical field [0001] The present invention relates to an elevator device and its control device, in particular to an elevator device and its control device suitable for controlling the same main rope through a plurality of braking devices. Background technique [0002] Among elevator installations comprising braking devices with electromagnets, elevator installations are known in which the same main rope is braked by a plurality of braking devices. In the above-mentioned elevator equipment, when emergency braking is performed, a plurality of braking devices are operated simultaneously to achieve emergency deceleration, and the elevator equipment is reliably stopped to avoid collision of the elevator car. At this time, there is a problem that the hoisting machine of the elevator equipment and the elevator car undergo rapid acceleration changes due to the braking force generated during the emergency braking, which may degrade the ride comfort of passengers. [0003] In orde...
Claims
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IPC IPC(8): B66B5/02B66B1/32
CPCB66B5/0031B66B5/02
Inventor 井手康一朗安部贵
Owner HITACHI LTD