TH72000A - Escape escape device - Google Patents

Abstract

The DC60 invention provides an escape device for elevators. In one form, when the elevator stops due to a power outage, those trapped inside can press a switch to activate the backup generator, and the backup electromagnetic contacts will activate if the backup generator is functioning normally. Alternatively, those trapped inside can rotate a handle to activate the slow-movement unit if the backup power system fails. The brakes are then released using the contact of the first cam, and a return unit, controlled remotely, re-entrys the slow-movement unit to its pre-start position. The electromagnetic contacts are sequentially short-circuited by contacting matching electromagnetic contacts. The elevator car then slowly moves to the nearest correct floor, allowing those trapped inside to safely escape. Rotating the handle activates the slow-moving unit if the backup power system fails. The brake is then released using the contact of the first cam. The return mechanism engages, controlled remotely, to return the slow-moving unit to its pre-initiation position. The electromagnetic contacts are sequentially short-circuited upon contact of matching contacts. The elevator car slowly moves to the nearest correct floor, allowing any trapped individuals to escape safely.

Claims (7)

1. The escape device for an elevator consists of an elevator car, a motor with normal and backup windings, a backup power supply to activate the backup winding by switching off the elevator car, a motor-driven pulley, a rope threaded through the pulley's groove, with one end attached to the elevator car and the other end attached to a counterweight, and a braking system. This escape device includes a slow-moving unit consisting of a rotating shaft, a set of cams mounted on the shaft, and a metal rod on the shaft. Each of the first and second ropes has one end attached to the other end of the metal rod, and a set of electromagnetic contacts. A control unit is mounted on the wall of the elevator car and connected to the first rope. This control unit consists of a hollow rectangular piece through which the first rope passes, and a handle for rotating this rectangular piece. The handle contains a set of parallel pins at the end of the rectangular piece. A rectangular section and a spring-loaded cam push against one of the pivots. A connecting arm has one end attached to the rectangular section. A sliding connecting arm has one end loosely connected to the other end of the sliding connecting arm. A guide bushing is fitted onto the sliding connecting arm, and a roller is located on the outside of the elevator car and connected to the other end of the sliding connecting arm. A return mechanism is mounted on the wall of the elevator shaft, and this return mechanism consists of a set of raised metal plates positioned on the sides to guide the roller. When the elevator stops due to a power outage, those inside can press a switch to activate the backup motor coil and activate the backup power supply in one of the following ways: a) The backup electromagnetic contact is activated, activating the slow-movement mechanism and causing the first cam to make contact and... a) The brakes are released to allow the drive shaft to rotate in case the backup generator is still functioning normally. The elevator car is designed to lower due to the height difference between the counterweight and the elevator car. or b) Those trapped inside the car can adjust the handle to activate the slow-movement unit in case the backup generator malfunctions. The brakes are released by the contact of the first cam, causing the shaft to rotate and allowing the elevator to descend. The return unit is then operated by a control unit to return the slow-movement unit to its pre-start position. The electromagnetic contacts are sequentially short-circuited by each remaining cam contacting each paired electromagnetic contact. This contact has a predetermined phase difference. The elevator car slowly moves to the nearest correct floor, and those trapped inside can open the elevator doors to escape. 2. The escape device for an elevator consists of: an elevator car, a motor with normal and backup windings, a backup power supply to activate the backup winding by switching off the elevator car, a motor-driven pulley, a rope threaded through the pulley's groove, one end of the rope tied to the elevator car and the other end tied to the counterweight, a braking system located between the pulley and the motor, and a deceleration unit. This escape device comprises a brake rod positioned above the brake, a stationary roller, a rope with one end tied to the brake rod and the other end extending down to the elevator car wall, passing through the roller, and a pair of electromagnetic contacts and an electromagnetic actuator positioned between the brake rod and the roller. In the event of a power loss, those trapped in the elevator can pull the rope or activate the backup power generator using a remote control. This activates the electromagnetic actuator, which closes the electromagnetic contacts and disengages the brake, causing the pulley to rotate slowly due to the height difference between the counterweight and the elevator car. 3. The braking system installed in the elevator's escape device consists of a brake disc assembly with at least one brake disc, a brake assembly mounted on the brake disc, each brake containing a sensor to detect brake malfunction, a brake rod, and a backup actuator with a connecting arm assembly containing at least one connecting arm connecting the backup actuator to the brake rod. When the sensor detects a brake malfunction, the associated brake rod and brake components are disengaged by activating the backup actuator to control the connecting arm. 4. A braking system claimed under claim 3 where the brakes are mounted on brake discs and connecting arms extend through brake pads mounted in series. 5. A braking system claimed under claim 3, whereby each connecting arm is attached to each brake rod and a backup actuator. 6. A braking system claimed under claim 3, having two connecting arms or brake discs, where one end of one arm extends through the series-arranged brake bars and the other end is connected to the auxiliary actuator; one end of the remaining connecting arm extends through the remaining series-arranged brake bars and the other end is connected to the auxiliary actuator; one brake disc extends through the series-arranged brake bars and the other brake disc extends through the remaining series-arranged brake bars. 7. A braking system claimed under claim 3, consisting of two brake discs, with each connecting arm attached to a separate brake arm and auxiliary actuator; one brake disc protruding through the series-arranged brakes, and the other brake disc protruding through the remaining series-arranged brakes.