JPH0238283A - Hydraulic elevator - Google Patents

Abstract

PURPOSE:To improve the safety by providing a safety handrail and a floor reach device or the like of a hydraulic elevator to be overlapped so as to prevent the handrail and the device from interfering with maintenance work, when it is performed, and enabling the elevator to be prevented from being automatically operated when the maintenance work is performed. CONSTITUTION:A safety handrail 4 is fixed to an upper beam 3 in a cage frame 2 supporting an elevator cage 1, and a gate 6 is formed in a location overlapping with a reach floor device in this safety rail 4. In maintenance time of the floor reach device, work can be performed by opening the gate 6. The gate 6 is detected for its opened condition by a microswitch 7 fixedly set up to the safety handrail 4 further being adaptable to the free end of an angle 4a constituting the gate 6, when it is opened, an elevator is forcedly stopped in its operation, being prevented from the operation. That is, the gate 6 can be swiveled with a stepped bolt 8 serving as the center, when the elevator is in operation, the angle 4a is placed in a condition with its free end adapted to the switch 7, being integrally fixed to the handrail 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hydraulic elevator, and more particularly to an improvement in a safety handrail provided for the safety of workers on a car.

(Prior art) In general, hydraulic elevators that are driven up and down by hydraulic pressure are
It has features such as no need to install a machine room like a rope elevator above the hoistway, so it complies with Japanese Industrial Standards 1.
As shown in A4301, they are increasingly being installed in buildings with small overhead dimensions.

In such a hydraulic elevator, a safety handrail is provided on the car to ensure the safety of workers.

[Problems to be Solved by the Invention] However, in hydraulic elevators installed in buildings with small overhead dimensions, the position of the upper beam of the car frame to which the safety handrail is fixed needs to be lower than in rope-type elevators. However, there was an irreconcilable problem that needed to be solved: the safety handrail was required to be installed at a certain height from the ceiling. In addition, in addition to the above-mentioned safety handrail, car equipment such as the elevator landing device is attached to the car frame upper beam, so if the above-mentioned upper beam is set low, the safety handrail and the floor landing device will There was a problem in that the two overlapped each other, causing problems in the maintenance of the landing device. In such cases, conventional methods have been to increase the overhead, raise the position of the upper beam, and move the setting position of the landing device to a position where it does not overlap with the safety handrail, or if the overhead cannot be increased, it is unavoidable to set the safety handrail. Countermeasures were taken, such as lowering the position of the safety handrail below the landing device, but increasing the overhead increased construction costs and was not economical, and lowering the position of the safety handrail was a safety issue. . For this reason, it has been proposed that the safety handrail is foldable so that it can be lowered than the equipment usually installed on the car (Utility Model Opening in 1983).
176167), it is difficult to ensure safety when workers step onto the car or when assembling safety handrails, and it is difficult to ensure safety when workers step onto the car or when assembling safety handrails, and it is necessary to stop or lock the elevator drive device before moving onto the car. This had the disadvantage of poor workability.

In view of the above points, the present invention has been developed to provide a condition in which there is no problem during maintenance work even if the safety handrail and car equipment such as the landing device are installed in an overlapping manner, and the elevator cannot be automatically operated during the work. The purpose of this project is to provide a hydraulic elevator that can be placed at any time.

(Means for Solving the Problems) In the hydraulic elevator according to the present invention, the safety handrail has a structure in which the portion that overlaps with the equipment on the car can be removed or opened and closed, and the overlapping portion of the handrail can be removed or opened. The system is equipped with a switch that detects this and stops the elevator operation.

(Function) In the present invention, even if the safety handrail and the car equipment overlap, the part of the safety handrail that overlaps with the above equipment can be removed or opened, making maintenance work for the above equipment easy. In addition, when the overlapping portion of the safety handrail is removed or opened, the elevator is forcibly stopped by a switch that detects this, improving safety.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4. The hydraulic elevator of this example has an upper beam ( A safety handrail (4) is fixed to the safety handrail (4), and the part of the safety handrail (4) that overlaps with the landing device (5) is formed as a gate (6) that can be swung open and closed on one side. Device (5)
During maintenance, the gate (6) is opened to allow work, and the open state of the gate (6) is
It is detected by a micro switch (7) that is fixedly installed on the safety handrail (4) and can come into contact with the free end of the angle (4a) that constitutes the gate (6), and the elevator operation is forced when the gate is opened. It is unique in that it is configured so that it is stopped and does not operate.

That is, the gate (6) is configured to be swingable by cutting out one side of the proximal end of the angle (4a) and pivotally attaching the other side to the safety handrail (4) using a stepped bolt (8). When the elevator is in operation, the free end of the angle (4a) is connected to the micro switch (7).
Secure the safety handrail (4) with the bolt (9) while it is in contact with the
The elevator is now in operation.

In the figure, (4b) is the support for the safety handrail, (10) is the bracket for attaching the landing device (5) to the upper beam, (
11) is a guide shoe, (12) is a guide rail installed on the lifting side and guides the car via the guide shoe (11), and (13) is the top of the hoistway.

Therefore, in the hydraulic elevator of this embodiment, there is no need to change the setting positions of the safety handrail (4) or the landing device (5), making maintenance work easier and improving safety.

In addition, in the above embodiment, the part of the safety handrail (4) that overlaps with the landing device (5) is set at an angle (4a).
Although the gate (6) is shown constructed as a gate (6) that can be erected and opened by swinging to one side, the angle (4a) may be completely separated from the safety handrail (4). Even in this case, the same effects as in the above embodiment can be achieved.

(Effects of the Invention) As described above, according to the present invention, equipment such as landing devices and safety handrails can be easily installed on the car without increasing the size of the overhead, resulting in economic efficiency and safety. This has the effect of improving.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an enlarged main part of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view showing the overall configuration of a hydraulic elevator car section to which the present invention is applied. FIG. 4 is a plan view thereof. (1) Elevator, (4) Safety handrail, (4a) Angle, (5) Landing device (car equipment), (7) Micro switch (switch). In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a hydraulic elevator equipped with equipment such as a landing device and a safety handrail during work on the elevator car, the safety handrail has a structure in which the portion that overlaps with the above-mentioned car equipment can be removed or opened and closed, A hydraulic elevator characterized in that a switch is provided which detects when the overlapping portion of the handrail is removed or opened and stops the operation of the elevator.