CN108087420B

CN108087420B - High-temperature lubrication-free universal core-adjusting knuckle bearing

Info

Publication number: CN108087420B
Application number: CN201711269985.8A
Authority: CN
Inventors: 杨晓平; 杨光德; 叶柱坚; 田素兰; 周泽贤; 周昌贤; 茶进忠; 段欣江; 杨传元; 杨朝强; 马华远; 吴晓金; 李剑锋
Original assignee: Yunnan Yuanxin Carbon Co ltd
Current assignee: Yunnan Yuanxin Carbon Co ltd
Priority date: 2017-12-05
Filing date: 2017-12-05
Publication date: 2020-04-21
Anticipated expiration: 2037-12-05
Also published as: CN108087420A

Abstract

A high-temperature lubrication-free universal core-adjustable knuckle bearing comprises a halved upper half outer ring of an inner spherical surface, a halved lower half outer ring of the inner spherical surface, a halved upper half inner ring of an outer spherical surface, a halved lower half inner ring of the outer spherical surface, an upper graphite half bearing bush embedded in the upper half inner ring of the outer spherical surface through an upper graphite pin, a lower graphite half bearing bush embedded in the lower half inner ring of the outer spherical surface through a lower graphite pin, soft graphite packing pieces respectively arranged on two end faces of the upper graphite half bearing bush and the lower graphite half bearing bush, and an upper half gland and a lower half gland respectively arranged on the outer end faces of soft graphite packing on the two end faces; the upper half outer ring of the inner spherical surface and the lower half outer ring of the inner spherical surface are connected through a first countersunk conical column positioning pin; the upper half inner ring of the outer spherical surface and the lower half inner ring of the outer spherical surface are connected through a second countersunk head conical column positioning pin; the upper half outer ring of the inner spherical surface is connected with the upper half inner ring of the outer spherical surface through a limiting pin. The invention has simple and reliable structure, automatic coaxiality adjustment and long service life.

Description

High-temperature lubrication-free universal core-adjusting knuckle bearing

Technical Field

The invention relates to a part for thermal equipment in carbon manufacturing industry, in particular to a high-temperature lubrication-free universal core-adjusting bearing.

Background

The carbon production process requires that main equipment is thermal equipment, a rotating main shaft, a cavity and the like of the equipment are respectively heated to 250-320 ℃ by taking circulating hot medium oil as a medium, and heat energy is conducted to process materials in the equipment cavity through an equipment body and the main shaft so that the materials are heated to the temperature required by the process. The principle of equipment heating is that high-temperature heat medium oil medium circulates in a jacket layer of an equipment body, a main shaft heats up by extending a steel pipe into a hollow shaft of a blind hole, high-pressure and high-temperature heat medium oil medium is injected into an inner hole of the steel pipe and circulates outside the steel pipe, and therefore continuous heating of the rotary main shaft is achieved. The rotary main shaft must be equipped with a corresponding special jacket loop type rotary joint device to realize uninterrupted heating. The equipment is generally large in size, the main shaft is long, and the concentricity of the shaft has strict specifications and requirements. Due to the fact that the working condition is severe, the traditional bearing cannot normally operate at 250-320 ℃, the use requirement of equipment cannot be met, the service life of the used bearing is short, the maintenance is frequent, and the reduction of the maintenance cost of the equipment is not facilitated. In addition, when carrying out the maintenance to the equipment bearing, must cool off high temperature heat medium oil medium, evacuation before the dismouting rotary joint device, accidents such as operation personnel scald often take place, can not avoid simultaneously leading to equipment to shut down for a long time and wait to cool. In addition, the lubricating medium is expensive, and the daily operation and maintenance cost of the equipment is further increased. The high-temperature rotary joint device with stable performance used in China at present basically depends on import, unnecessary damage to parts is caused by frequent disassembly and assembly, a large amount of labor force and all aspects of management cost are correspondingly input, and cost reduction and efficiency improvement of enterprises are not facilitated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a high-temperature lubrication-free universal core-adjusting bearing which is simple and reliable in structure, can automatically adjust the coaxiality and has long service life.

The purpose of the invention is realized by the following technical scheme:

a high-temperature lubrication-free universal adjustable-core joint bearing comprises a halved upper half outer ring of an inner spherical surface, a halved lower half outer ring of the inner spherical surface, a halved upper half inner ring of an outer spherical surface, a halved lower half inner ring of the outer spherical surface, an upper graphite half bearing bush embedded in the upper half inner ring of the outer spherical surface through an upper graphite pin, a lower graphite half bearing bush embedded in the lower half inner ring of the outer spherical surface through a lower graphite pin, soft graphite packing pieces respectively arranged on two end faces of the upper graphite half bearing bush and the lower graphite half bearing bush, and an upper half gland and a lower half gland respectively arranged on the outer end faces of soft graphite packing on the two end faces; the two sides of the upper half outer ring of the inner spherical surface and the lower half outer ring of the inner spherical surface are respectively connected through a first countersunk conical column positioning pin; the two sides of the upper half inner ring of the outer spherical surface and the two sides of the lower half inner ring of the outer spherical surface are respectively connected through second countersunk head conical column positioning pins; the upper half outer ring of the inner spherical surface and the upper half inner ring of the outer spherical surface or the lower half outer ring of the inner spherical surface and the lower half inner ring of the outer spherical surface are connected through a limit pin; the upper half gland and the lower half gland which are positioned on the outer end face of the soft graphite packing are respectively connected with the upper half inner ring and the lower half inner ring of the outer spherical surface through transverse bolts which are vertical to the end faces of the glands; outer ring oil grooves are formed in the outer circular surfaces of the upper half outer ring of the inner spherical surface and the lower half outer ring of the inner spherical surface, and inner ring oil grooves are formed in the spherical surfaces of the upper half inner ring of the outer spherical surface and the lower half inner ring of the outer spherical surface.

The graphite upper half bearing bush and the graphite lower half bearing bush are single-row bearing bushes or multi-row bearing bushes in parallel.

The invention adopts a two-half involution type joint structure, and the inner ring and the outer ring can realize flexible universal free rotation. The two halved graphite bearing bushes are embedded in the inner ring of the joint bearing through the graphite pins, so that the axial movement and the rotation of the graphite bearing bushes can be prevented. The invention not only solves the lubrication problem under the high-temperature working condition and realizes high-temperature lubrication-free, but also is easy to manufacture and convenient to install and solves the problem of difficult adjustment of the coaxiality by combining the two half-involution type joint structure with the graphite bearing bush and the graphite filler.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

FIG. 3 is a schematic cross-sectional view C-C of FIG. 2;

fig. 4 is a schematic sectional view B-B of fig. 1.

Detailed Description

As shown in fig. 1, 2, 3 and 4, the high-temperature lubrication-free universal adjustable-core spherical plain bearing comprises a halved upper half outer ring 1 of an inner spherical surface, a halved lower half outer ring 8 of the inner spherical surface, a halved upper half inner ring 2 of an outer spherical surface, a halved lower half inner ring 7 of the outer spherical surface, an upper graphite half bearing bush 11 embedded in the upper half inner ring 2 of the outer spherical surface through an upper graphite pin 10, a lower graphite half bearing bush 12 embedded in the lower half inner ring 7 of the outer spherical surface through a lower graphite pin 16, dustproof soft graphite packing pieces 15 respectively arranged on two end faces of the upper graphite half bearing bush and the lower graphite half bearing bush, and an upper half gland 13 and a lower half gland 14 respectively arranged on the outer end faces of the soft graphite packing on the two end faces. And the two sides of the upper half outer ring 1 of the inner spherical surface and the two sides of the lower half outer ring 8 of the inner spherical surface are respectively connected through a first countersunk head conical column positioning pin 5. And the two sides of the upper half inner ring 2 of the outer spherical surface and the lower half inner ring 7 of the outer spherical surface are respectively connected through a second countersunk head conical column positioning pin 6. The inner spherical surface upper semi-outer ring 1 and the outer spherical surface upper semi-inner ring 2 are connected through a limiting pin 4, and the inner spherical surface lower semi-outer ring 8 and the outer spherical surface lower semi-inner ring 7 can also be connected through a limiting pin. The upper half gland 13 and the lower half gland 14 which are positioned on the outer end face of the soft graphite packing are respectively connected with the upper half inner ring 2 and the lower half inner ring 7 of the outer spherical surface through transverse bolts 9 which are vertical to the end faces of the glands; the outer circle oil grooves are formed in the outer circle surfaces of the inner spherical surface upper half outer ring 1 and the inner spherical surface lower half outer ring 8, and the inner circle oil grooves 17 are formed in the spherical surfaces of the outer spherical surface upper half inner ring 2 and the outer spherical surface lower half inner ring 7. The graphite upper half bearing bush and the graphite lower half bearing bush can adopt a single-row bearing bush or a combined structure bearing bush consisting of a plurality of rows of bearing bushes side by side according to requirements.

The upper half outer ring 1 and the lower half outer ring 8 of the inner spherical surface are respectively coupled by countersunk conical column positioning pins 5 at two sides, so that the inner ring and the outer ring of the joint bearing can flexibly, universally and freely rotate after being installed. The split graphite upper half bearing shell 11 and the split graphite lower half bearing shell 12 are embedded in an inner ring inner hole of the joint bearing, and the graphite bearing shells are prevented from axially moving and rotating in the bearing joint inner ring hole through stop grooves formed in the inner ring and graphite pins installed in the stop grooves.

The invention is formed by processing after matching and combining, can be manufactured into corresponding different sizes according to the requirements of users, and has the advantages of simple structure, reliability, reasonability and easy manufacture.

Claims

1. A high-temperature lubrication-free universal core-adjustable knuckle bearing is characterized by comprising a halved inner spherical surface upper half outer ring (1), a halved inner spherical surface lower half outer ring (8), a halved outer spherical surface upper half inner ring (2), an outer spherical surface lower half inner ring (7), a graphite upper half bearing bush (11) embedded in the outer spherical surface upper half inner ring (2) through an upper graphite pin (10), a graphite lower half bearing bush (12) embedded in the outer spherical surface lower half inner ring (7) through a lower graphite pin (16), soft graphite packing pieces (15) respectively arranged on two end faces of the graphite upper half bearing bush and the graphite lower half bearing bush, and an upper half gland (13) and a lower half gland (14) respectively arranged on the outer end faces of the soft graphite packing on the two end faces; the two sides of the inner spherical surface upper half outer ring (1) and the inner spherical surface lower half outer ring (8) are respectively connected through a first countersunk conical column positioning pin (5); the two sides of the upper half inner ring (2) of the outer spherical surface and the two sides of the lower half inner ring (7) of the outer spherical surface are respectively connected through a second countersunk head conical column positioning pin (6); the inner spherical surface upper semi-outer ring (1) and the outer spherical surface upper semi-inner ring (2) or the inner spherical surface lower semi-outer ring (8) and the outer spherical surface lower semi-inner ring (7) are connected through a limit pin (4); the upper half gland (13) and the lower half gland (14) which are positioned on the outer end face of the soft graphite packing are respectively connected with the upper half inner ring (2) of the outer spherical surface and the lower half inner ring (7) of the outer spherical surface through a transverse bolt (9) which is vertical to the end face of the gland; outer ring oil grooves are formed in the outer circular surfaces of the inner spherical surface upper semi-outer ring (1) and the inner spherical surface lower semi-outer ring (8), and inner ring oil grooves (17) are formed in the spherical surfaces of the outer spherical surface upper semi-inner ring (2) and the outer spherical surface lower semi-inner ring (7).

2. The high temperature lubrication-free universal aligning knuckle bearing according to claim 1, wherein the graphite upper half bearing shell and the graphite lower half bearing shell are single-row bearing shells or multiple-row bearing shells side by side.