CN-117794838-B - Elevator device

Abstract

The invention discloses an elevator device with an electric emergency stop device which has high setting freedom and is suitable for saving space. The elevator device comprises an elevator car (1), an emergency stop device (2) arranged on the elevator car, and an electric working device (10) arranged on the elevator car for enabling the emergency stop device to act, wherein the electric working device comprises a movable component, an electromagnet for attracting the movable component in a standby state of the electric working device, a rod-shaped piece connected with the movable component, and a brake starting component (100) connected with the end part of the rod-shaped piece, and when excitation of the electromagnet is stopped and the rod-shaped piece is driven, a brake (200) of the emergency stop device is pushed up by the brake starting component.

Inventors

• Numata Soshi

Assignees

• 株式会社日立制作所

Dates

Publication Date

20260505

Application Date

20210826

Claims (5)

1. 1. An elevator apparatus includes: An elevator car; a first emergency stop device and a second emergency stop device which are arranged at the left and right sides of the lower part of the elevator car, and An electric working device provided in the elevator car to operate the emergency stop device, It is characterized in that the method comprises the steps of, The electric work machine is provided with: A movable member; an electromagnet that attracts the movable member in a standby state of the electric power tool; A first bar connected to the movable member; a first stopper start member connected to an end of the first rod; a second bar which can be linked with the first bar by a link mechanism, and A second stopper actuating member connected to an end of the second rod, When the excitation of the electromagnet is stopped and the first rod is driven, the brake of the first emergency stop device is pushed up by the first brake actuating member, and the second rod linked with the first rod is driven, the brake of the second emergency stop device is pushed up by the second brake actuating member, The electric work machine is provided with: a feed screw screwed with the electromagnet, and A motor for driving the feed screw to rotate, The electric working device is arranged below the elevator car, The first rod and the second rod are arranged in parallel with the feed screw in the longitudinal direction.
2. 2. Elevator arrangement according to claim 1, characterized in that, The first brake actuating member and the second brake actuating member have tapered surfaces, The braking member is pushed up by the tapered surface.
3. 3. Elevator arrangement according to claim 2, characterized in that, The conical surface is in direct contact with the lower portion of the brake.
4. 4. Elevator arrangement according to claim 2, characterized in that, The tapered surface is in contact with a rod connected to the stopper and extending laterally of the stopper.
5. 5. Elevator arrangement according to claim 1, characterized in that, The first and second bars are driven by spring force.

Description

Elevator device Technical Field The present invention relates to an elevator apparatus including an emergency stop device that operates electrically. Background In an elevator apparatus, a governor and an emergency stop device are provided to make an elevator car in a predetermined overspeed state stop in order to constantly monitor the lifting speed of the elevator car. In general, an elevator car and a governor are combined by a governor rope, and when an overspeed state is detected, the governor rope is restrained to operate an emergency stop device on the elevator car side, thereby emergency-stopping the elevator car. In such an elevator apparatus, since the governor rope as a long object is laid in the hoistway, it is difficult to save space and reduce cost. In addition, when the governor rope swings, the structure in the elevating path and the governor rope are likely to interfere with each other. In contrast, an emergency stop device that does not use a governor rope has been proposed. As a conventional technique related to an emergency stop device that does not use a governor rope, a technique described in patent document 1 is known. In this prior art, a drive shaft for driving an emergency stop device and an operating mechanism for operating the drive shaft are provided in an elevator car. The operating mechanism includes a movable iron core mechanically connected to the drive shaft via a connecting piece, and an electromagnet that attracts the movable iron core. The drive shaft is biased by the drive spring, but in normal times, the electromagnet is energized to attract the movable core, so that the movement of the drive shaft is restricted by the operating mechanism. In an emergency, the electromagnet is demagnetized to release the restraint of the drive shaft, and the drive shaft is driven by the urging force of the drive spring. Thus, since the lift lever of the emergency stop device is pulled, the emergency stop device operates, and the elevator car is stopped in an emergency. When the emergency stop device is returned to the normal state, the electromagnet is moved to approach the movable core that is moved in the emergency. After the electromagnet is abutted with the movable iron core, the electromagnet is electrified, and the movable iron core is attracted to the electromagnet. Further, the electromagnet is driven in a state where the movable iron core is attracted to the electromagnet, and the movable iron core and the electromagnet are returned to the normal standby position. The moving mechanism of the electromagnet includes a feed screw shaft screwed with the electromagnet and a motor for rotating the feed screw shaft. Prior art literature Patent literature Patent document 1 International publication No. 2020/110437 Disclosure of Invention Problems to be solved by the invention In the above-described conventional art, since the operating mechanism is configured as a lift lever for lifting up the emergency stop device, the degree of freedom in setting the operating mechanism is limited or the setting space of the operating mechanism becomes large. Accordingly, the present invention provides an elevator apparatus including an electric emergency stop device which can be provided with an improved degree of freedom and is suitable for space saving. Means for solving the problems In order to solve the above problems, an elevator apparatus according to the present invention includes an elevator car, an emergency stop device provided to the elevator car, and an electric actuator provided to the elevator car to actuate the emergency stop device, wherein the electric actuator includes a movable member, an electromagnet that attracts the movable member in a standby state of the electric actuator, a rod (rod) connected to the movable member, and a stopper start member connected to an end of the rod, and when excitation of the electromagnet is stopped and the rod is driven, the stopper of the emergency stop device is pushed up by the stopper start member. Effects of the invention According to the present invention, the space occupied by the operating mechanism of the emergency stop device can be reduced, and the degree of freedom in the installation position of the operating mechanism can be improved. The problems, structures, and effects other than those described above will be apparent from the following description of the embodiments. Drawings Fig. 1 is a schematic configuration diagram of an elevator apparatus as an example. Fig. 2 is a front view showing a mechanism portion of the electric power tool in the embodiment. Fig. 3 is a front view showing a mechanism portion of the electric power tool in the embodiment. Fig. 4 is a side view showing a mechanism portion of the electric power tool in the embodiment. Fig. 5 is a side view showing a mechanism of the electric power tool according to the modification. Detailed Description An elevator apparatus according to an embodiment of the present inve