阅读说明：本技术 电梯保养安全装置 (Elevator maintenance safety device ) 是由 新堀贵明 大林孝 矢内贤一 中村贤 铃木健太 于 2019-05-15 设计创作，主要内容包括：本发明提供一种电梯保养安全装置,其在保养员进行坑井内保养作业时能够安全地使按位开关进行动作。电梯保养安全装置的特征为：具备沿门轨道和层站门槛进行开闭的层站门、在上述层站门位于全开放位置时进行动作的开关、在上述层站门位于全开放位置时阻止上述层站门向关闭方向移动的关闭方向移动阻止机构、通过坑井保养作业的开始操作而允许上述层站门移动至上述全开放位置且通过坑井保养作业的结束操作而允许上述层站门向关闭方向移动的开闭允许机构,通过上述开关控制电梯的电源。(The invention provides an elevator maintenance safety device, which can safely make a push switch operate when a maintainer performs maintenance operation in a pit. The elevator maintenance safety device is characterized in that: the elevator control system is provided with a landing door which opens and closes along a door rail and a landing threshold, a switch which operates when the landing door is at a fully open position, a closing direction movement preventing mechanism which prevents the landing door from moving in a closing direction when the landing door is at the fully open position, and an opening and closing allowing mechanism which allows the landing door to move to the fully open position by a start operation of a pit maintenance operation and allows the landing door to move in the closing direction by an end operation of the pit maintenance operation, wherein the power supply of the elevator is controlled by the switch.)

1. An elevator maintenance safety device is characterized in that,

comprising:

a landing door that opens and closes along a door rail and a landing threshold;

a switch that operates when the landing door is in a fully open position;

a closing direction movement prevention mechanism that prevents the landing door from moving in a closing direction when the landing door is at a fully open position;

an open/close allowing mechanism that allows the landing door to move to the fully open position by a start operation of a pit maintenance operation and allows the landing door to move in a closing direction by an end operation of the pit maintenance operation,

the power supply of the elevator is controlled by the switch.

2. The elevator service safety device of claim 1,

the fully open position of the landing door during normal operation is set to be narrower than the fully open position.

3. Elevator service safety device according to claim 1 or 2,

the elevator is provided with a locking device which can be operated from a boarding point, and the elevator is in a state for maintenance work by opening the locking device before the pit maintenance work is started.

4. An elevator service safety device according to any of claims 1 to 3,

the closing direction movement preventing means is a landing door opening/closing protecting member provided to the landing threshold, and the opening/closing permitting means is a maintenance work stopper that moves in the opening/closing direction together with the landing door and is lifted by a maintenance worker to pass through a position of the landing door opening/closing protecting member.

Technical Field

The invention relates to an elevator maintenance safety device.

Background

In an elevator, since a maintenance device is provided in a hoistway pit portion, a maintenance worker performs maintenance work in the hoistway pit. When maintenance work is performed in a pit, a locking device of a landing door is opened, locking of the landing door which is automatically locked is prevented by a stopper or the like, and a push switch which cuts off a power supply is operated to perform the work.

Among these, the push switch is provided near the entrance of the elevator path such as under the entrance threshold in order to avoid interference with the elevator car, etc., but in order to operate the push switch, it is necessary to stick out the body in the elevator path, and there is a risk of slipping into the pit.

Patent document 1 discloses a device for automatically actuating a push switch when a maintainer opens a lock device.

Disclosure of Invention

The invention aims to provide a maintenance safety device of an elevator, which can safely make a push switch operate when a maintainer performs maintenance operation in a pit.

Means for solving the problems

As is apparent from the above description, the present invention is constituted as "an elevator maintenance safety device including a landing door that opens and closes along a door rail and a landing threshold, a switch that operates when the landing door is at a fully open position, a closing direction movement preventing mechanism that prevents the landing door from moving in a closing direction when the landing door is at the fully open position, an open-close allowing mechanism that allows the landing door to move to the fully open position by a start operation of a pit maintenance operation and allows the landing door to move in the closing direction by an end operation of the pit maintenance operation, and a power supply of an elevator is controlled by the switch.

Effects of the invention

According to the present invention, it is possible to provide an elevator maintenance safety device that can safely operate a push switch when a maintenance worker performs maintenance work in a pit.

Drawings

Fig. 1 is a side view showing the entire structure of an elevator.

Fig. 2 is a view of a landing door according to an embodiment of the present invention as viewed from the elevating path side.

Fig. 3 is a diagram of a state in which a landing door is opened during maintenance work according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of a landing door of an embodiment of the present invention.

Fig. 5 is a diagram of a series of processes of the present invention.

In the figure: 1-lifting path, 2-elevator taking point, 3-pit well, 4-car, 5-counterweight, 6-traction machine, 7-control panel, 8-governor, 9-buffer, 10-guide rail, 11-earthquake monitor, 12-landing door, 13-locking device, 14-pressing switch, 15-door hook, 16-door rail, 17-landing threshold, 18-limiter for maintenance operation, 19-limiter hanging rod, 20-limiter position fixing device, and 21-landing door opening and closing protection component.

Detailed Description

Hereinafter, an embodiment of an elevator maintenance safety device according to the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are given to the common components.