JPS5929817A - Radial rolling bearing with three-layer rollers - Google Patents

Abstract

PURPOSE:To increase the maximum permissible speed of rotatin and improve safety by forming a radial rolling bearing with three-layer rollers. CONSTITUTION:A track ring is composed of four rings, that is, inner ring 4, middle inner ring 5, middle outer ring 6 and outer ring 7, whilc a roller 1, 2, 3 is arranged respectively between track rings in three layerw. Thus, even if rollers of two layers are stopped due to some trouble, rolling motion can be continued by the roller in the third layer.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radial rolling bearing in which rolling elements (balls or rollers) are subjected to rolling motion in three layers.

With conventional radial rolling bearings, as long as the inner diameter and accuracy are the same, no matter how many different things are done, such as the size and number of rolling elements, the shape and dimensions of the raceway groove, the location of the cage, etc., the rolling elements or single layer It was not possible to double the permissible number of revolutions per shot.

In addition, the permissible rotational speed of radial rolling bearings decreases as the inner diameter increases, so even if the rolling elements are passed through two layers, the inner ring of the rolling element that is on the outside will be on the inside (the outer ring of the rolling element that is on the outside). However, since the inner diameter of the rolling element is larger than the inner diameter of the rolling element, the allowable rotational speed decreases, so even if the above-mentioned method is applied, the allowable rotational speed cannot be doubled.

This invention is based on the use of three layers of rolling elements, and although it is suitable for inner speed and accuracy, the permissible rotational speed is higher than that of a radial rolling bearing with a single layer or gauge, and if the wall of the two layers is broken. Co-Q
The purpose of this invention is to obtain a radial rolling bearing with higher safety.

To explain an embodiment of the present invention with the drawings, FIG. 1 shows that several rolling elements 1 are held by a cage 8 and are arranged between an inner ring 4 and a middle inner ring 50, and are rolled by several lJ·. The moving elements 2 are held by a cage 9f and arranged between the middle inner ring 5 and the middle outer ring 6, and some of the rolling elements 3 are held by the cage 10 (held by the cage 9f and arranged between the middle outer ring 6 and the outer ring 7). The three-layer rolling elements are arranged in concentric circles as shown in Figure 2.

In this way, the inner ring 4, the inner ring 5, and the outer ring 6
・Due to the four-wheel configuration of the outer ring 7 and the rolling elements placed between the bearing rings, the rolling elements are 1 and 2@
3, three layers Q can be rubbed.

When a radial rolling bearing configured as shown in the table above is started, the rolling elements roll in three layers, 1, 2, and 3.

The rolling motion of the rolling elements varies depending on the load condition of the rolling elements in each layer, lubrication, and the condition Q of 1 m.The rotation speed is distributed among the three layers of rolling elements depending on the load condition number. The rotation speed is increased sequentially starting from the layer of rolling elements with the least load.

In other words, among the three layers of rolling elements, the rolling element of the first layer, which has the least load, rotates, and as the rotation speed increases, the load increases, and when the rotation reaches the restraining speed, the other two layers rotate. The second layer of rolling elements, whose load is distributed and equalized among the rolling elements, operates and rotates seven times together with the first layer of rolling elements. As the rotational speed of the two-layer rolling element increases, the load increases.
When the rotation reaches the restraining speed, the load on the rolling elements of the second layer is distributed and equalized, and the rolling element f4 rotates, so one eliminating element in each layer always carries this load. The rolling elements of the third layer can be rotated at the same relative speed until the permissible rotational speed is reached.

From the above usage number, the number of ♂I and capacity III of the radial rolling bearing of this invention corresponds to the sum of the allowable 11101.L of the moving objects 1, 2, and 3. In the invention, as long as the negative f of the rolling element becomes large and the rolling element of 1117 layers can be operated when the rotation suppression speed is reached, the more the number of layers of the removing element increases, the more the permissible equality becomes. It is more effective for increasing the number of rotations.

As explained above, in this invention, the allowable rotation speed corresponds to the sum of the allowable rotation speeds of the three layers of rolling elements (jl
- Kota of the East! h1. lf book or single y so radial 9 stones 11! Compared to the II receiver, +7'(-) each rotational speed increases significantly and has the effect of approaching twice the wall.

In addition, when the load increases, the rolling elements in each layer distribute the load to the rolling elements in the first layer, which rotates with the minimum load, so the rolling elements in the third layer rotate. Suppression speed 1
It rotates easily without becoming a heavy load until it reaches 4L'G. In other words, even if a conventional radial square bearing would carry a heavy load, this invention has a rolling element layer that is higher than that of a conventional radial IV bearing. It is possible to reduce the energy consumption of the ridge corresponding to the reduction of the load on the eaves, and the rotation of the rolling elements in the third layer does not become a heavy load until it reaches the same level as the eaves. This has the effect of significantly increasing the w-ifr of the bearing.

Moreover, this invention has a three-layer rolling body.Even if the rolling body of one layer stops due to a failure, the rolling bodies of the second and fifth layers will continue rolling motion. Even if the rolling elements in the two layers fail or stop due to Q, the rolling elements in the third layer continue rolling motion, so this invention (machines and equipment incorporating the bearing) Either prevent the disadvantages such as stopping the entire force and incurring serious 1 (4 damage) by spreading to the W team, or increase the safety by minimizing the damage. Is it an enhancing effect?t)
Ru.

[Brief explanation of drawings]

FIG. 1 is a pure sectional view showing an embodiment of the invention. FIG. 2 is a similar partially cutaway side view. 1, 2, 3...Rolling element 4...e] Wheel 5...
...Middle inner ring 6...Middle Tato ring 7...
・・Outer ring 8・9・10・・Cage patent applicant
Tadahiko Fukuzaki

Claims (1)

[Claims] 1 Cage (8) Several rolling elements held in G (1)
is placed between the inner ring (4) and the middle inner ring (5), and the retainer (
Some rolling elements (2) held in the inner ring (5)
and the middle outer ring (6), and several rolling elements (3) held by the retainer 110 are placed between the middle outer ring (6) and the outer ring (6), and the rolling elements are A radial square bearing characterized by rolling motion in layers.