CN109236851B

CN109236851B - Axial series double-thrust self-balancing sliding bearing

Info

Publication number: CN109236851B
Application number: CN201811170336.7A
Authority: CN
Inventors: 黎明; 朱凯迪; 刘勋; 游洋; 张立超; 刘庆鹤; 徐波; 张振海
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2023-12-22
Anticipated expiration: 2038-10-09
Also published as: CN109236851A

Abstract

An axial series double-thrust self-balancing sliding bearing relates to the technical field of bearings and comprises a shaft sleeve, a thrust disc, a thrust shoe, a balance cushion block of the thrust shoe, a front thrust bearing seat, a rear thrust bearing seat, a balance block and a casing, wherein a right shaft sleeve, the thrust disc, the thrust shoe, the balance cushion block of the thrust shoe, the front thrust bearing seat, the thrust disc, the thrust shoe, the balance cushion block of the thrust shoe, the rear thrust bearing seat, the balance block and the casing are sequentially connected from left to right. The axial series double-thrust self-balancing sliding bearing can be applied to rotating machinery rotating at high speed, and the diameter of the bearing can be reduced; under the same linear velocity condition, higher load can be borne; the special structure can make two sets of axle shoes act simultaneously to achieve self-balancing of the bearing thrust.

Description

Axial series double-thrust self-balancing sliding bearing

Technical field:

the invention relates to the technical field of bearings, in particular to an axial series double-thrust self-balancing sliding bearing.

The background technology is as follows:

the bearing is used as an important part on engineering machinery, so that friction between the rotating part and the supporting part is greatly reduced. With the development of technology, the requirements of various industries on mechanical performance, stability and the like are improved, so that the requirements on bearings are gradually improved. Rolling bearings are adaptable to most operating conditions, whereas sliding bearings have, with respect to rolling bearings: 1. the high-speed rotary machine has the obvious advantages of long service life, suitability for high-speed 2, capability of bearing impact and vibration load, high bearing capacity, suitability for heavy-load occasions 3, high operation precision, working balance 4, simple structure, convenience in disassembly and assembly and the like, and has good application prospect in the field of high-speed rotary machines.

At the end of the 17 th century, the ball bearing manufactured by the c. From the end of the 17 th century to the middle of the 19 th century, many scientists have made considerable effort in this area until friedrichs 1883, fischer, has proposed the claims of producing steel balls of the same size and precise roundness with machines, which thoroughly lay the foundation of the independent bearing industry. The world war begins for the first time, and with the huge application potential of the bearing in the field of the military industry, the rapid development of the industry is promoted. The main bearing market in the world is occupied by a few enterprises in the countries of japan, germany, the united states and the like, while the main bearing manufacturers in China only have products with partial acceptance in the market of few bearing factories such as hawk shafts, rocky shafts, tile shafts and the like.

In order to ensure that the linear speed is within a certain range, the outer diameter of a thrust pad of a common thrust sliding bearing is correspondingly reduced, so that the born thrust is reduced, and the use requirement of a single thrust unit cannot be met.

The invention comprises the following steps:

the invention aims to overcome the defects of the prior art, and provides an axial series double-thrust self-balancing sliding bearing which is designed for effectively solving the problem that the existing single-thrust bearing cannot bear thrust under the condition of high rotating speed and large thrust.

The invention adopts the technical scheme that: the axial series double-thrust self-balancing sliding bearing comprises a shaft sleeve, thrust discs, thrust pads, a balance cushion block of the thrust pads, a front thrust bearing seat, a rear thrust bearing seat, a balance block and a casing, wherein the number of the balance cushion blocks of the thrust discs, the thrust pads and the thrust pads is two, the two thrust discs are mutually connected and are connected with the shaft sleeve, the shaft sleeve is connected with one of the thrust discs, the thrust pad is connected with one end of the front thrust bearing seat, the balance cushion block of one of the thrust pads is arranged between the thrust pads and the front thrust bearing seat, the other end of the front thrust bearing seat is connected with the other thrust disc, the thrust pads are connected with the rear thrust bearing seat, the balance cushion block of the other thrust pad is arranged between the thrust pads and the rear thrust bearing seat, and the rear thrust bearing seat is connected with the casing through the balance block.

The balance blocks are equally distributed on the circumferential surface of the rear thrust bearing seat.

The beneficial effects of the invention are as follows: the axial series double-thrust self-balancing sliding bearing can be applied to rotating machinery rotating at high speed, and the diameter of the bearing can be reduced; under the same linear velocity condition, higher load can be borne; the special structure can make two sets of axle shoes act simultaneously to achieve self-balancing of the bearing thrust.

Description of the drawings:

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a diagram of the weight distribution of the present invention.

The specific embodiment is as follows:

referring to each figure, the axial series double-thrust self-balancing sliding bearing comprises a shaft sleeve 1, a thrust disc 2, thrust pads 3, a balance cushion block 4 of the thrust pads, a front thrust bearing seat 5, a rear thrust bearing seat 6, a balance block 7 and a casing 8, wherein the number of the thrust disc 2, the thrust pads 3 and the balance cushion block 4 of the thrust pads is two, the two thrust discs 2 are mutually connected and are connected with the shaft sleeve 1, the shaft sleeve 1 is connected with one of the thrust discs 2, the thrust disc 2 is connected with one of the thrust pads 3, the thrust pads 3 are connected with one end of the front thrust bearing seat 5, the balance cushion block 4 of one of the thrust pads is arranged between the thrust pads 3 and the front thrust bearing seat 5, the other end of the front thrust bearing seat 5 is connected with the other thrust disc 2, the thrust pads 3 are connected with the rear thrust bearing seat 6, the balance cushion block 4 of the other thrust pad is arranged between the thrust pads 3 and the rear thrust bearing seat 6, and the rear thrust bearing seat 6 is connected with the casing 8 through the balance block 7. The balance weights 7 are equally distributed on the circumferential surface of the rear thrust bearing base 6.

The shaft sleeve 1 is used for mounting the thrust disc 2, and the shaft sleeve 1 and the thrust disc 2 form a transmission part of a bearing; the thrust pad 3, the balance cushion block 4 and the front thrust bearing seat 5 of the thrust pad, the thrust pad 3, the balance cushion block 4 and the rear thrust bearing seat 6 of the thrust pad form a front thrust bearing and a rear thrust bearing, and the casing 8 is a casing bearing all thrust forces.

Example 1

The bearing is of a double-thrust structure, the thrust of the front reasoning bearing and the thrust of the rear thrust bearing are transmitted to a thrust balance block 7 through the thrust bearing seat 6 after heat exchange of the respective front thrust bearing seat 5, a teeterboard structure is formed together, thrust balance is carried out through the structure, and the rotating thrust disc 2 is arranged on a shaft sleeve 1.

Example two

The arrangement of the first embodiment is different in that the thrust disc 2 is directly mounted on the rotating shaft, and in that the number of thrust pads 3 and thrust weights 7 is different.

Example III

The arrangement of the first embodiment is different in that the thrust bearing is a fixed, non-tilting bearing, without the counterweight 7 of the thrust pad behind the bearing.

The structure form of double thrust units is adopted, so that the thrust requirement is met; the structure of the front thrust bearing seat 5 and the rear thrust bearing seat 6 which are sleeved together is adopted, so that the compact structure and radial positioning are ensured; the balancing block 7 is adopted behind the rear thrust bearing seat, and the axial thrust of the two thrust units is evenly distributed in a teeterboard structure mode; the whole thrust ring is adopted to bear thrust after the balance weight 7, and is also a fulcrum of the 'teeterboard' of the balance weight 7.

The working rotation speed can be controlled between 0rpm and 12000 rpm; the structure is compact, and the strength of the bearing piece can be adjusted according to the actual use condition; the size of the bearing working face and the structural form of the oil supply circuit can be adjusted according to the actual use space and the working condition.

The axial series double-thrust self-balancing sliding bearing adopts a double-thrust structure, is in an axial series form, can enable the thrust on two thrust discs to be self-balanced according to a teeterboard structure, adopts a double-thrust structure, improves the bearing capacity of the bearing, and reduces the diameter of the bearing.

In summary, the axial series double-thrust self-balancing sliding bearing can be applied to rotating machinery rotating at high speed, and the diameter of the bearing can be reduced; under the same linear velocity condition, higher load can be borne; the special structure can make two sets of axle shoes act simultaneously to achieve self-balancing of the bearing thrust.

Claims

1. An axial tandem double-thrust self-balancing sliding bearing is characterized in that: the device comprises a shaft sleeve (1), thrust discs (2), thrust pads (3), a balance cushion block (4) of the thrust pads, a front thrust bearing seat (5), a rear thrust bearing seat (6), a balance block (7) and a casing (8), wherein the number of the thrust discs (2), the thrust pads (3) and the number of the balance cushion blocks (4) of the thrust pads are two, the two thrust discs (2) are connected with each other and are connected with the shaft sleeve (1), the shaft sleeve (1) is connected with one of the thrust discs (2), the thrust discs (2) are connected with one of the thrust pads (3), one end of the thrust pad (3) is connected with one end of the front thrust bearing seat (5), one of the balance cushion blocks (4) of one thrust pad is arranged between the thrust pad (3) and the front thrust bearing seat (5), the other end of the front thrust bearing seat (5) is connected with the other thrust disc (2), the thrust pad (2) is connected with the other thrust pad (3), the other thrust pad (6) is connected with the rear thrust bearing seat (6), and the other thrust pad (6) is provided with the other thrust pad (6), and the other thrust pad (6) is connected with the casing (7) through the balance cushion block; the balance blocks (7) are uniformly distributed on the circumferential surface of the rear thrust bearing seat (6); grooves are formed in the side faces of the front thrust bearing seat (5) and the rear thrust bearing seat (6), and the balance cushion block (4) of the thrust pad is arranged in the grooves.