CN201599324U - Isolation block for a turntable bearing - Google Patents

Abstract

The utility model discloses a turntable bearing isolation block, which comprises an isolation block body. There are first oil storage pits, and third oil storage pits are evenly distributed along the circumferential direction near the edge of the concave spherical surface, and the third oil storage pits extend along the circumferential direction, and the first oil storage pits on the concave spherical surface The portion between the pit and the third oil storage pit is evenly distributed with second oil storage pits along the circumferential direction, and the second oil storage pit extends radially, and the second oil storage pit and the third oil storage pit The oil storage pits are set independently and misplaced with each other. The isolation block provided by the utility model can accommodate more lubricating grease, has good self-lubricating performance, small friction coefficient, excellent wear resistance, light weight and low noise, and can realize the best performance of the turntable bearing.

Description

Isolation block for a turntable bearing

technical field

The utility model relates to the technical field of turntable bearings, in particular to a turntable bearing isolation block.

Background technique

The function of the slewing bearing cage in the slewing bearing is to evenly separate the rolling elements. The performance of the cage has an important impact on the life of the bearing, the starting friction torque, and the flexibility of rotation. At present, there are two kinds of cages commonly used in slewing bearings, one is a segmented stamping cage, and the other is a cage composed of spacers. At present, in the cage composed of spacer blocks, the structure of the common spacer block is a solid cylinder, and the two ends of the spacer block are made of concave spherical surfaces, so as to adapt to the rolling body, that is, the steel ball, and the steel ball pushes the spacer during the rolling process. The blocks advance, and the spacer blocks slide against each other on the raceway. During the working process of the slewing bearing, it is necessary to ensure that there is sufficient lubricating grease between the steel ball and the spacer, and between the spacer and the raceway. If the lubricating grease is insufficient, the contact surface will be worn, thereby reducing the life of the bearing. . Due to the limitations of its own structure, the currently used spacer block, that is, the gap between the steel ball and the spacer block, and the spacer block and the raceway is very small, so the amount of lubricating grease that can be filled is limited, so the lubricating grease needs to be replenished frequently. It brings great inconvenience to users, and the maintenance cost is high.

Utility model content

The purpose of the utility model is to provide a turntable bearing spacer to meet the lubrication requirements between the steel ball and the spacer, and between the spacer and the raceway.

In order to achieve the above object, the utility model adopts the following technical scheme: a turntable bearing isolation block, including the isolation block body, the two ends of the isolation block body are concave spherical surfaces, and the outer peripheral surface of the isolation block body is a single leaf hyperboloid, The center of the concave spherical surface is provided with a first oil storage pit, and the portion near the edge of the concave spherical surface is evenly distributed with third oil storage pits along the circumferential direction, and the third oil storage pits extend along the circumferential direction, The portion between the first oil storage pit and the third oil storage pit on the concave spherical surface is evenly distributed with second oil storage pits along the circumferential direction, the second oil storage pits extend in the radial direction, and the first oil storage pits The second oil storage pit and the third oil storage pit are independently arranged and misplaced with each other.

Further, the first oil storage pit and the second oil storage pit are independently arranged or penetrated into one body.

The spacer body is made of polyamide 1010 resin material.

The outer peripheral surface of the isolation block provided by the utility model is a single-leaf hyperboloid, and the gap between the isolation block and the raceway is increased, thereby increasing the storage capacity of lubricating grease and reducing the distance between the isolation block and the raceway. The contact area reduces friction and wear; the first, second and third oil storage pits are set on the concave spherical surface at both ends of the isolation block, which increases the gap between the steel ball and the isolation block and increases the lubricating grease. At the same time, it also reduces the contact area between the rolling elements and the isolation block, reducing friction and wear. The second oil storage pit and the third oil storage pit are misaligned with each other, which effectively ensures that the rolling elements are in each rotation. Both directions can achieve sufficient lubrication; at the same time, the weight of the isolation block provided by the utility model is greatly reduced, which is more conducive to the work of the bearing and saves raw materials. The isolation block of the utility model is made of polyamide 1010 resin material and has self-lubricating function. Even in the case of insufficient lubricating oil, it can also play a certain lubricating effect, effectively ensuring the normal use of the bearing.

The isolation block provided by the utility model can accommodate more lubricating grease, has good self-lubricating performance, small friction coefficient, excellent wear resistance, long service life, light weight and low noise, and can realize the best performance of the turntable bearing.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 in the utility model;

Fig. 2 is a schematic diagram of a concave spherical surface in Embodiment 2 of the utility model.

Detailed ways

Example 1

As shown in Figure 1, for the isolation block of the turntable bearing, the outer peripheral surface of the isolation block body 1 is a single leaf hyperboloid, and the two ends are concave spherical surfaces. The center of the concave spherical surface is provided with a first oil storage pit 2, and the first oil storage The outer periphery of the pit 2 is evenly provided with second oil storage pits 3 , the second oil storage pits 3 are distributed at intervals along the circumferential direction and extend radially, and the outer periphery of the second oil storage pit 3 is evenly provided with third oil storage pits 4. The third oil storage pits 4 are distributed at intervals along the circumferential direction and extend along the circumferential direction. The second oil storage pits 3 and the third oil storage pits 4 are independently arranged and misaligned with each other. The first oil storage pits 2 and the second oil storage pits Two oil storage pits 3 are independently arranged.

Example 2

As shown in FIG. 2 , the difference between embodiment 2 and embodiment 1 is that the first oil storage pit 2 and the second oil storage pit 3 are integrated into one body.

Claims (3)

1. A turntable bearing spacer, comprising a spacer body, the two end faces of the spacer body are concave spherical surfaces, characterized in that: the outer peripheral surface of the spacer body is a single leaf hyperboloid, and the center of the concave spherical surface There are first oil storage pits, and third oil storage pits are evenly distributed along the circumferential direction near the edge of the concave spherical surface. The third oil storage pits extend along the circumferential direction, and the first oil storage pits on the concave spherical surface The part between the oil pit and the third oil storage pit is evenly distributed with second oil storage pits along the circumferential direction, the second oil storage pits extend in the radial direction, the second oil storage pit and the first oil storage pit The three oil storage pits are set independently and misaligned with each other. 2 . The spacer block for the slewing bearing according to claim 1 , characterized in that: the first oil storage pit and the second oil storage pit are independently arranged or penetrated into one body. 3 . 3. The slewing bearing spacer according to claim 1 or 2, characterized in that: the body of the spacer is made of polyamide 1010 resin material.

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