JPS5948231B2 - Elevator diversion wheel device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator, and more particularly to an elevator diversion wheel device that allows easy adjustment of misalignment between a main rope sheave and a diversion wheel.

Generally, in an elevator, the car is raised and lowered by the driving force of an electric motor, but that driving force is first transmitted to the reduction gear, and then to the main rope wheel, which is fixed so that it moves integrally with the reduction gear, to rotate it. .

Since the main rope car is wound with a main rope having a cage and a counterweight attached to both ends thereof, when the electric motor is driven, the cage moves up and down to operate the elevator.

However, the machine stand supporting the electric motor and the main rope wheel is usually equipped with a deflection wheel to provide an appropriate gap between the cage and the counterweight.

The main rope wheel and the deflection wheel are provided with a plurality of grooves in which the main rope engages substantially at right angles to the axis.

However, if the groove of the deflection wheel is not perpendicular to the axis of the main rope wheel and is misaligned, the main rope will engage the main rope wheel and the deflection wheel diagonally, causing the deflection wheel or the main rope When the wheel was moved in the axial direction and the main rope was wound, centering was required to adjust the main rope wheel and deflection wheel to be perpendicular to the axis.

Conventionally, the misalignment between the deflection wheel and the main rope wheel was adjusted by moving the shaft supporting the deflection wheel in the longitudinal direction of the shaft, which was moved by hitting the shaft with a hammer, etc. Even after spending a great deal of time and effort, it was not possible to make perfect adjustments, and the main rope wheel and main rope were unevenly worn, shortening their lifespan.

The present invention aims to eliminate the above-mentioned drawbacks, and its purpose is to facilitate centering adjustment between the main rope wheel and the deflection wheel by inserting a liner between the rotation stopper plate and the shaft support. It is an object of the present invention to provide a deflection wheel device for an elevator that reduces uneven wear of a main rope, a main rope wheel, etc. as much as possible.

Hereinafter, one embodiment of the present invention will be described in detail.

In FIG. 1, 11 is an electric motor, 12 is a reduction gear, and 13 is a
A main rope pulley is attached to the shaft of this reduction gear 12, and these are attached to a machine stand 14.

A main rope 15 has a cage 16 at one end, a counterweight 17 at the other end, and is wound around the main rope pulley 13 at its intermediate portion.

The driving force of the electric motor 11 is transmitted to the main rope sheave 13 via the speed reduction device 12, and the movement of the main rope sheave 13 moves the cage 16 up and down to operate the elevator.

At this time, in order to provide an appropriate gap between the cage 16 and the counterweight 17, a deflection wheel mounting cover 18, the details of which will be described below, is fixedly attached to the machine stand 14.

In FIGS. 2 and 3, this deflector wheel mounting cover 18 is supported by a shaft 20 passing through the center of the deflector wheel 19, and the mounting position is rotatably fixed to the center of the shaft 20 by a bearing or the like. Ru.

The shaft 20 of this deflection wheel is supported on both sides by fitting through the shaft support 21 which is attached to the machine stand 14 side by fastening or welding.

On the other hand, an engagement member 22 that restricts movement and rotation of the shaft 20 in the longitudinal direction is provided at the end of the shaft 20 passing through the shaft support 21.

Its structure is such that a U-shaped groove 20a is provided in advance from the outside perpendicular to the axial direction on the cylindrical portion of the shaft 20 near the side that supports the shaft 20 on the machine table 14 side, and a plate-shaped groove 20a is fitted into this groove 20a. By inserting the engaging member 22, movement of the shaft 20 in the axial direction is restricted.

By the way, when the elevator is operated, the main rope 15
The deflection wheel 19 rotates due to friction between the deflection wheel 19 and the groove provided in the deflection wheel 19.

In addition, a rotation stopper plate 2 is provided in a groove 20a provided in the shaft 20.
2 are engaged with each other, movement of the shaft 20 in the direction of arrow A is restricted.

Therefore, a metal plate-shaped liner 23 is inserted between the rotation stopper plate 22 and the shaft support 21.

When adjusting the centering of the rope grooves of the main rope 13 and the deflection wheel 19, insert the liner 23, which is an adjusting piece, between the shaft support 21 and the rotation stopper engagement member 22, and the thickness dimension can be adjusted. By adjusting the shaft 20 in the longitudinal direction (
The rope grooves of the main rope sheave 13 and the deflection sheave 19 are positioned substantially perpendicular to the axis, and uneven wear of each rope sheave groove due to misalignment of the main rope 15 is eliminated.

That is, the moving distance for centering adjustment can be freely adjusted depending on the thickness and number of liners 23.

Thus, according to the above, the centering position of the axial movement of the main rope 13 and the deflection wheel 19 can be accurately and easily carried out.

Here, the shape of the liner 23 is a rectangular plate (approximately 0.5 mm thick) with notches as shown in FIG. 4, and the number of liners is determined according to the adjustment dimension.

In the above description, a rotation stopper plate and a liner are attached to only one side of the shaft 20, but they may be attached to both shaft supports.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view showing essential parts of the present invention, and FIG. 3 is an enlarged view of the X section in FIG.
FIG. 4 is a perspective view showing a specific example of the adjustment piece used in the present invention. 11... Electric motor, 12... Speed reduction device,
13... Main rope car, 14... Machine stand, 15... Main rope, 16... Cage, 17... Counterweight, 19... deflection wheel, 20... shaft, 21... shaft support, 22... engaging member (plate), 23...
...Adjustment piece (liner).

Claims (1)

[Claims] 1 A cage and a counterweight are connected by a main rope, and a drive source, a main rope car connected to this, and a deflection car separated from this are attached to a machine stand and suspended on a hoistway. In an elevator, a shaft passes through the deflection wheel and is rotatably fixed in the center, and both ends of the shaft pass through the shaft support of the machine stand and are horizontally supported, and the outer periphery of the shaft near the shaft bearing part. A groove is provided in a direction perpendicular to the shaft to prevent rotation and axial movement of the shaft, and an engaging member that engages with the groove and the shaft support, and a groove is provided between the shaft support and the engaging member. A deflection wheel device for an elevator, characterized in that an adjustment piece for moving the deflection wheel and shaft along the axial direction is interposed therein, and the adjusting piece is fixed to a shaft support.