CN211117128U

CN211117128U - Novel double-row tapered roller bearing with eight inner diameters 558.8 in strut frame

Info

Publication number: CN211117128U
Application number: CN201921022088.1U
Authority: CN
Inventors: 文宇; 刘小辉; 钟飞; 张福洪
Original assignee: Chengdu Kehua Heavy Bearing Co ltd
Current assignee: Chengdu Kehua Jincheng Precision Machinery Manufacturing Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-07-28
Anticipated expiration: 2029-07-02

Abstract

The novel double-row tapered roller bearing with eight inner diameters 558.8 in a strut frame is composed of a double-row outer ring and two single-row inner rings separated by an inner spacing ring, a plurality of rollers are arranged between the inner ring and the outer ring, and the two rows of rollers are in an inner eight shape and are supported by a strut holder. In order to solve the problems of poor working condition and environmental condition, large bearing load, high rotating speed, short bearing service life and the like in the prior art, the design of 'rolling bearing limit design method' originally created by a company is adopted, and the external dimension and structural element value of a novel bearing are provided. The requirements of customers on the long service life of the bearing and the reduction of the use cost are met. Belongs to an oversize bearing. The bearing is used for the special bearing of the gear box of the rolling mill in the metallurgical industry.

Description

Novel double-row tapered roller bearing with eight inner diameters 558.8 in strut frame

The technical field is as follows: a double-row tapered roller bearing belongs to an oversize bearing. The bearing is mainly used for the gear box of the rolling mill in the metallurgical steel industry. Belongs to engineering element bearings (F16C) and metal rolling (B21B).

(II) background technology:

the double-row tapered roller bearing for the steel rolling mill gear box in the prior metallurgical steel industry has the defects of short service life of the bearing due to the severe working condition and environmental condition of the bearing, high rotating speed and large load, and users require the bearing to have long service life for reducing the use cost.

Although the chinese utility model patent "eight novel double row tapered roller bearings in strut frame" (Z L201720760217.1) discloses an eight double row tapered roller bearing in strut frame, it only discloses a model (3506/536.575) and can not satisfy the requirement of the long life of eight double row tapered roller bearings in more strut frames at all.

(III) the invention content:

the utility model provides a novel double-row tapered roller bearing of eight internal diameters 558.8 in strut frame, its purpose just provides long-life double-row tapered roller bearing for the user. Provides a novel structural element value of the double-row tapered roller bearing.

The utility model is used for bearing model 3506/558.8, wherein 35 is double-row tapered roller bearing, and 06 is unidimensional series code, and 558.8 is bearing internal diameter d. The utility model provides a technical scheme is a non-standard new design in this bearing model.

The technical scheme is as follows:

a novel double-row tapered roller bearing with eight inner diameters 558.8 in a strut frame is provided with a double-row outer ring 1 and two single-row inner rings 2 separated by an inner spacer ring 5, a plurality of rollers 4 are arranged in the inner and outer rings, the two rows of rollers are in inner eight shapes in relative positions and are supported by a strut retainer 3, and the novel double-row tapered roller bearing is characterized in that the numerical value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing width B1, the bearing outer ring width C1, the roller diameter Dw, the roller length L, the number Z of rollers in each row and the roller half cone angle psi of a model bearing are shown in table 1. Table 1

In order to obtain the best effect of the double-row tapered roller bearing, the bearing inner diameter D, the bearing outer diameter D, the bearing width B1, the bearing outer ring width C1, the roller diameter Dw, the roller length L, the number Z of rollers in each row and the half cone angle psi of the rollers of the type of bearing in table 1 are respectively the values in table 2, namely the values of the nominal size of the tolerance in table 1.

TABLE 2

The utility model discloses beneficial effect: the novel double-row tapered roller bearing with the eight inner diameters of 558.8 in the strut frame is designed by adopting a rolling bearing limit design method originally invented by a company, and the structural element numerical values of the model double-row tapered roller bearing are determined. The design realizes that the designed roller has the largest diameter and the longest length, the highest rated dynamic load value of the bearing and the longest calculated service life under the condition of meeting the requirements of design strength and process machining, meets the long service life requirements of customers and reduces the use cost of the customers.

(IV) description of the drawings

Fig. 1 is a front cross-sectional view of a novel double row tapered roller bearing with eight inner diameters 558.8 in the strut tower.

Figure 2 roller 4 shape diagram.

(V) detailed description of the preferred embodiments

Referring to fig. 1 and 2, a novel eight-row tapered roller bearing in a strut frame with number 1 in table 2 comprises a two-row outer ring 1 and two single-row inner rings 2 separated by an inner ring 5, a plurality of rollers 4 are arranged between the inner ring and the outer ring, the rollers are arranged in an inner eight shape at opposite positions, the rollers are supported by a strut cage 3, the strut cage 3 is a through hole in the center of each roller 4, a strut 3.1 passes through the through hole, two ends of each strut are respectively connected with 2 circular washers 3.2 to form the bearing inner diameter D of 558.8mm, the bearing outer diameter D of 736.6mm, the bearing inner ring width B1 of 225.425mm, the bearing outer ring 1 width C1 of 177.8mm, and the structural element sizes determined by a limit design method are that the roller diameter Dw of the bearing is 53.109mm, the roller length of L is 72.8mm, the rollers are arranged in number Z37 in each row in the circumference, and the half cone angle psi of the rollers is 58'.

Claims

1. A novel double-row tapered roller bearing with an inner eight-inner diameter 558.8 of a strut frame is provided with a double-row outer ring (1) and two single-row inner rings (2) separated by an inner spacer ring (5), a plurality of rollers (4) are arranged in the inner and outer rings, the two rows of rollers are in inner eight shapes in opposite positions and are supported by a strut holder (3), and the novel double-row tapered roller bearing is characterized in that the value ranges of the bearing inner diameter D, the bearing outer diameter D, the bearing width B1, the bearing outer ring width C1, the roller diameter Dw, the roller length L, the number Z of rollers in each row and the half cone angle psi of the rollers of the bearing are numerical ranges in table 1, and the value

2. The new double row tapered roller bearing of claim 1 having eight inner diameters 558.8 in the strut cage, wherein the inner diameter D, the outer diameter D, the width B1, the width C1, the diameter Dw, the length L, the number Z of rollers per row and the half cone angle psi are as shown in Table 2

TABLE 2