JPS5837907Y2 - roller guide - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a roller guide for an elevator on which a large load is always applied.

BACKGROUND ART Conventionally, roller guides of this type of elevator have generally been of a structure in which the load acting on the roller guide is shared by a plurality of rollers of the same diameter arranged vertically in parallel.

As is well known, roller guide rollers are made of a metal ring covered with an elastic material such as rubber, and if used in an elevator that is constantly subject to a large load, such as a hydraulic elevator, the elevator may stop for a long time. In this case, the part of the outer circumference of the roller that is in contact with the guide rail becomes flat.

For this reason, in the structure that is commonly used in this type of elevator, where the load is applied by multiple rollers of the same diameter, when the elevator starts, the flattened outer circumferential portion of each roller comes into contact with the guide rail at the same time, causing noise and abnormalities while the elevator is running. There was a drawback that vibration occurred.

The present invention was developed in view of the above, and by receiving the load acting on the roller guide with a plurality of rollers of different diameters arranged in parallel in the vertical direction, the flattened outer peripheral portion of each roller is simultaneously applied to the guide rail. This is intended to prevent noise and abnormal vibrations from coming into contact with other objects.

The present invention will be explained below with reference to an embodiment of a hydraulic elevator shown in the drawings.

FIG. 1 is a side view, and FIG. 2 is a plan view of the roller guide portion.

In the figure, 1 is a car, 2 is a guide rail that guides the car and 1, 3 is a hydraulic cylinder, 4 is a plunger, and 5 is a hydraulic cylinder.
is a sheave attached to the upper part of the plunger 4, and 6 is a main lobe, one end of which is fixed to the car 1, and the other end is fixed to the hoistway 7 via the sheave 5.

The seat 1 moves up and down as the plunger 4 moves up and down, guided by the roller guide of the present invention.

Reference numeral 8 denotes one roller fixed above and below the seat and the seat 1, and a roller 9 and a load R that guide the frontage direction of the seat and the seat 1.
A large diameter roller 10 and a small diameter roller 11 share the burden of
is installed.

The magnitude of the load R is as follows, where W is the horizontal distance from the center of gravity of the ride 1 to the position 1 where the ride 1 is lifted, the distance between the upper and lower roller guides is 'YH1, and the weight of the ride 1 is W. .

□This load R acts on the large diameter roller 10 and the small diameter roller 11 regardless of whether the elevator is running or stopped, so if the elevator is stopped for a long time, the large diameter roller 10 and the small diameter roller 11 will be affected by the load R. The rubber at the portion of the outer periphery that is in contact with the guide rail 2 is deformed into a flattened shape and does not return to its old state immediately.

However, in the present invention, even when the car starts running and the rollers start rotating, the large diameter roller 10 and the small diameter roller 11
Since the diameters are different from that of the guide rail 2, the flattened outer peripheral portions of the large diameter roller 10 and the small diameter roller 11 are simultaneously connected to the guide rail 2.
It will touch after several rotations.

During this time, the outer circumference of the flattened roller returns to its original state, so noise and abnormal vibrations due to the flattened roller are reduced.
This can be greatly reduced and a good riding comfort can be obtained.

In the above embodiment, the roller guide of an elevator that goes up and down by lifting a position other than the center of gravity of the car 1, but in general, if the present invention is implemented in a roller guide such as a lobe type elevator, a similar result can be obtained. Effects can be obtained.

[Brief explanation of drawings]

FIG. 1 is a side view of an elevator equipped with a roller guide according to the present invention. FIG. 2 is a plan view of the roller guide portion. 1... Car, 4... Plunger, 8... One roller, 10... Large diameter roller 11... Small diameter roller.

Claims (1)

[Claims for Utility Model Registration] A roller guide having at least the outer periphery of an elastic body and having rollers that constantly guide an elevator car by rolling on the guide rail, A roller guide characterized in that a plurality of the rollers are arranged in parallel in the vertical direction so as to roll on the roller, and the diameters of these rollers are made different.