JPH04266374A - Safety device for elevator - Google Patents

Abstract

PURPOSE:To avoid any accident on a workman in a pit being hit hard on his head by a cage or a weight. CONSTITUTION:Warning devices 7, 9 which operate for giving an alarm with a buzzer when the cage 1 or a balancing weight comes down by a specified distance are arranged in positions on guide rail 4 or 5 corresponding to positions below a cage 1 or a balancing weight 13.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an elevator, and more particularly to a safety device for ensuring the safety of elevator workers.

0002

2. Description of the Related Art Conventionally, when maintenance and inspection work was performed in the pit of an elevator hoistway, the elevator power switch in the pit was turned off to prevent the elevator from moving.

0003

[Problem to be solved by the invention] Conventional pit work is
As mentioned above, it is common practice to turn off the pit switch to prevent the elevator from moving, but in order to increase the efficiency of elevator construction, maintenance, and installation, the current practice is to perform work on the car in parallel with pit work. be. However, there was a risk of being hit on the head by the basket or counterweight.

[0004] The purpose of the present invention was to solve the above-mentioned problems, and to provide a safety device for an elevator that can prevent a pit worker from being hit in the head by a car or a counterweight. be.

[0005]

[Means for solving the problem] In order to achieve the above object, the car or the counterweight is lowered to a predetermined distance at a position corresponding to the lower part of the car or the counterweight of the guide rail provided in the pit at the bottom of the elevator hoistway. It is equipped with an alarm device that activates when the

[0006]

According to the elevator safety device according to the present invention, when a worker works in a pit, the worker first attaches an alarm device to the guide rail of the pit. As a result, when the car or counterweight is lowered into the pit, it is possible to notify that the car or counterweight has reached the designated position, and the worker can sense the danger to himself and immediately take evasive action. .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the pit portion in this embodiment. In the figure, 1 is the car, 2 is the car floor, 3 is the emergency stop frame,
4 is a guide rail for the car, 5 is a guide rail for the counterweight, 6 and 8 are brackets provided on the guide rails 4 and 5, and the brackets 6 and 8 are provided with the car and the counterweight 13.
Alarm devices 7 and 9 are provided, respectively, which are activated and issue an alarm with a buzzer, for example, when the object has descended to a predetermined distance. The alarm devices 7 and 9 include, for example, a built-in proximity switch that detects when an object approaches a predetermined distance. 11 is a worker, and 12 is a pit.

Next, the operation of the embodiment of the present invention will be explained based on the above configuration. When working in the pit 12, the worker 11 first attaches the brackets 6, 8 having the alarm devices 7, 9 to the guide rails 4, 5 for the car 1 and the counterweight 13, which are erected in the pit 12. As a result, elevator car 1 or counterweight 13 is moved to pit 1.
2, the alarm devices 7 and 9 detect this and sound a buzzer. This allows the worker 11 to immediately take an avoidance stance and prevent harm.

[0009]

[Effects of the Invention] As described above, according to the present invention, when the car or counterweight descends to a predetermined distance, an alarm can be issued to notify the worker of danger, so that the worker will not be hit on the head by the car or the counterweight. There is no.

[Brief explanation of the drawing]

FIG. 1 is a side view of a pit section showing an embodiment of an elevator safety device of the present invention.

[Explanation of symbols]

1 Basket 2 Car floor 4 Guide rail 5 Guide rail 6, 8 Bracket 7, 9 Alarm device 11. Workers 12 Pit 13 Counterweight

Claims (1)

[Claims] [Claim 1] An alarm device that operates when the car or the counterweight has descended to a predetermined distance is provided at a position corresponding to the lower part of the car or the lower part of the counterweight on the guide rail provided in the pit at the bottom of the elevator hoistway. An elevator safety device featuring: