CN213419702U

CN213419702U - Rolling bearing arrangement structure for resisting external impact

Info

Publication number: CN213419702U
Application number: CN202022580650.1U
Authority: CN
Inventors: 武毅; 杨龙; 胡朝阳; 陈营利; 汤鱼
Original assignee: 703th Research Institute of CSIC
Current assignee: 703th Research Institute of CSIC
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-11
Anticipated expiration: 2030-11-10

Abstract

A rolling bearing arrangement structure for resisting external impact relates to the field of mechanical structure connection modes. The bearing arrangement structure aims to solve the problems that an existing bearing arrangement structure can simultaneously receive unstable radial and axial loads generated by deformation of an external elastic coupling in the operation process, and when external impact is large, a shaft system cannot run or transmission precision is reduced, and the service life is short. The inside cylinder roller bearing that has inlayed of one side through-hole of box, the inside bearing bush that has inlayed of opposite side through-hole of box, the inside of bearing bush has inlayed No. two cylinder roller bearings and four point contact ball bearing along the axis direction is even, the one end of shafting and cylinder roller bearing's inner circle fixed connection, the other end of shafting passes No. two cylinder roller bearing's inner circle in proper order, four point contact ball bearing's inner circle and distance ring, rotate with the box and be connected, and distance ring passes through bolt and box another side fixed connection. The utility model is suitable for a antifriction bearing arrangement structure of high-speed rotation shafting.

Description

Rolling bearing arrangement structure for resisting external impact

Technical Field

The utility model relates to a mechanical structure connected mode field, concretely relates to resist external shock's antifriction bearing arrangement structure.

Background

The rolling bearing is a common shafting support part and widely applied to industrial production, and can be mainly divided into a cylindrical roller bearing only bearing radial load, a four-point contact ball bearing axial load and a deep groove ball bearing capable of bearing both radial load and axial load according to the characteristic of bearing load. In the case of a shafting which is subjected to both radial load and axial load, the arrangement of two deep groove ball bearings is adopted, but the limit rotating speed of the deep groove ball bearings is usually low (< 5000 rmin). The rotating speed of an input shaft of a certain product exceeds 8000r/min, unstable radial and axial loads generated by deformation of an external elastic coupling can be simultaneously applied in the operation process, the operation working condition is complex, external impact of the operation environment is large, and selection and arrangement of bearings are difficult.

In conclusion, the existing bearing arrangement structure can simultaneously receive unstable radial and axial loads generated by deformation of the external elastic coupling in the operation process, and when the bearing arrangement structure is subjected to external impact, the problem that a shaft system cannot run or the transmission precision is reduced and the service life is short is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve current bearing arrangement structure and can receive the unstable radial and axial load that outside elastic coupling warp the production simultaneously at the operation in-process, when receiving outside impact great, lead to the unable operation of shafting or transmission precision to reduce, and the shorter problem of life, and provide a antifriction bearing arrangement structure who resists external impact.

The utility model discloses a rolling bearing arrangement structure for resisting external impact, which comprises a shaft system, a first cylindrical roller bearing, a second cylindrical roller bearing, a four-point contact ball bearing, a bearing bush, a box body and a distance ring;

through holes are formed in two sides of the box body, the two through holes are symmetrically arranged, a first cylindrical roller bearing is embedded in the through hole in one side of the box body, a bearing bush is embedded in the through hole in the other side of the box body, a second cylindrical roller bearing and a four-point contact ball bearing are uniformly embedded in the bearing bush along the axial direction, one end of the shaft system is fixedly connected with an inner ring of the first cylindrical roller bearing, and the other end of the shaft system sequentially penetrates through the inner ring of the second cylindrical roller bearing, the inner ring of the four-point contact ball bearing and the distance ring and is rotatably connected with the box body, and the distance ring is fixedly connected with the other side face;

furthermore, the rolling bearing arrangement structure resisting external impact further comprises a first oil nozzle and a second oil nozzle; two sides of the upper surface of the box body are respectively provided with an oil duct, one side of the box body is provided with a first oil spray nozzle which is communicated with the oil duct, and the other side of the box body is provided with a second oil spray nozzle which is communicated with the oil duct;

further, the first oil nozzle is fixedly connected with one side of the box body through a bolt;

further, the second oil nozzle is fixedly connected with the other side of the box body through a bolt;

furthermore, a 0.5mm gap is arranged at the matching part of the outer ring of the four-point contact ball bearing and the bearing bush;

furthermore, the shafting and all the bearing inner rings are connected in an interference manner;

further, when using, the inside cylinder roller bearing that has inlayed of one side through-hole of box, the inside bearing bush that has inlayed of opposite side through-hole of box, the inside of bearing bush has inlayed a No. two cylinder roller bearings and a four-point contact ball bearing along the axis direction is even, the one end of shafting and the inner circle fixed connection of a cylinder roller bearing, the other end of shafting passes the inner circle of No. two cylinder roller bearings in proper order, the inner circle and the distance ring of four-point contact ball bearing, be connected with the box rotation, the lubrication of bearing is passed through to the both sides of shafting in the inside high-speed rotation of box, when high-speed rotation, lubricate the bearing through two fuel sprayer on the box, reduce the friction, and the service life is.

Compared with the prior art, the utility model following beneficial effect has:

one, the utility model overcomes prior art's shortcoming adopts four point contact ball bearing and cylindrical roller bearing to bear the axial load and the radial load that the shafting produced respectively, and the characteristics that every bearing bore load are unanimous with its self good at load type, and bearing arrangement structure after the combination has improved 2 ~ 3 times than the bearing life-span when using alone, improves the shafting at high-speed moving precision, improves life, avoids appearing the unable pivoted phenomenon of shafting.

Secondly, the utility model overcomes prior art's shortcoming adopts four point contact ball bearing outer loop and bearing bush cooperation department to be equipped with the clearance, and furthest eliminates the influence of external impact to the bearing.

Thirdly, the utility model discloses convenient to use, the installation is simple.

Drawings

Fig. 1 is a sectional view of a rolling bearing arrangement according to the present invention, which is resistant to external impacts;

FIG. 2 is an enlarged view of one end of a rolling bearing arrangement according to the present invention against external impacts;

fig. 3 is an enlarged view of the other end of the rolling bearing arrangement according to the present invention against external impacts.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and a rolling bearing arrangement structure against external impact according to the present embodiment includes a shafting 1, a first cylindrical roller bearing 2, a second cylindrical roller bearing 3, a four-point contact ball bearing 4, a bearing bush 5, a housing 8, and a distance ring 9;

through holes are formed in two sides of the box body 8, the two through holes are symmetrically arranged, a first cylindrical roller bearing 2 is embedded in the through hole in one side of the box body 8, a bearing bush 5 is embedded in the through hole in the other side of the box body 8, a second cylindrical roller bearing 3 and a four-point contact ball bearing 4 are uniformly embedded in the bearing bush 5 along the axis direction, one end of the shaft system 1 is fixedly connected with an inner ring of the first cylindrical roller bearing 2, the other end of the shaft system 1 sequentially penetrates through the inner ring of the second cylindrical roller bearing 3, the inner ring of the four-point contact ball bearing 4 and the distance ring 9 and is rotatably connected with the box body 8, and the distance ring 9 is fixedly connected with the other side face of the;

this embodiment, when using, box 8's one side through-hole is inside to be inlayed cylindrical roller bearing 2, box 8's the inside bearing bush 5 that has inlayed of opposite side through-hole, bearing bush 5's inside has inlayed No. two cylindrical roller bearing 3 and a four-point contact ball bearing 4 along the axis direction is even, shafting 1's one end and No. 2 cylindrical roller bearing's inner circle fixed connection, shafting 1's the other end passes No. two cylindrical roller bearing 3's inner circle in proper order, four-point contact ball bearing 4's inner circle and distance ring 9, rotate with box 8 and be connected, shafting 1's both sides are passed through the lubrication of bearing and are rotated at the inside of box at a high speed, when rotating at a high speed, lubricate the bearing through two oil jets on the box 8, reduce the friction, and.

The second embodiment is as follows: the present embodiment is described with reference to fig. 2 and 3, and is a further limitation of the bearing arrangement according to the first embodiment, and the rolling bearing arrangement according to the present embodiment is resistant to external impact, and further includes a first oil jet 6 and a second oil jet 7; two sides of the upper surface of the box body 8 are respectively provided with an oil duct, one side of the box body 8 is provided with a first oil spray nozzle 6, the first oil spray nozzle 6 is communicated with the oil duct, the other side of the box body 8 is provided with a second oil spray nozzle 7, and the second oil spray nozzle 7 is communicated with the oil duct;

this embodiment adopts the both ends of box 8 to be equipped with an oil sprayer respectively, when shafting 1 rotates at a high speed, lubricates the bearing through the oil sprayer at both ends, effectively alleviates the bearing and lightly carries the risk of skidding.

The third concrete implementation mode: the present embodiment is described with reference to fig. 2, and is a further limitation to the bearing arrangement structure according to the second embodiment, in the rolling bearing arrangement structure according to the present embodiment, which resists external impact, and the first oil jet 6 is fixedly connected to the side of the case 8 by bolts;

this embodiment adopts a fuel sprayer 6 to pass through bolt and 8 one side fixed connection of box, improves stability.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 3, and is a further limitation to the bearing arrangement structure according to the second embodiment, in the rolling bearing arrangement structure according to the present embodiment, which resists external impact, and the second oil jet nozzle 7 is fixedly connected to the other side of the case 8 by bolts;

this embodiment adopts No. two fuel sprayer 7 to pass through bolt and 8 opposite sides fixed connection of box, improves stability.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 3, and is a further limitation to the bearing arrangement structure according to the first embodiment, in which a 0.5mm gap is provided at the position where the outer ring of the four-point contact ball bearing 4 is engaged with the bearing bush 5;

in the specific embodiment, the clearance is arranged at the matching part of the outer ring of the four-point contact ball bearing and the bearing bush, so that the influence of external impact on the bearing is eliminated to the maximum extent.

The sixth specific implementation mode: the present embodiment is described with reference to fig. 1, and is a further limitation to the bearing arrangement structure described in the first embodiment, and the shaft system 1 and all the bearing inner rings are connected by interference in the rolling bearing arrangement structure described in the present embodiment for resisting external impact.

Principle of operation

When using, box 8's one side through-hole is inside to be inlayed cylindrical roller bearing 2, box 8's the inside bearing bush 5 that has inlayed of opposite side through-hole, bearing bush 5's inside has inlayed a No. two cylindrical roller bearing 3 and a four-point contact ball bearing 4 along the axis direction is even, shafting 1's one end and cylindrical roller bearing 2's inner circle fixed connection, shafting 1's the other end passes the inner circle of No. two cylindrical roller bearing 3 in proper order, four-point contact ball bearing 4's inner circle and distance ring 9, rotate with box 8 and be connected, the lubrication of bearing is passed through in the inside high-speed rotation of box to shafting 1's both sides, when high-speed rotation, lubricate the bearing through two fuel sprayer on the box 8, reduce the friction, and prolong service.

Claims

1. A rolling bearing arrangement structure resistant to external impact, characterized in that: the bearing comprises a shaft system (1), a first cylindrical roller bearing (2), a second cylindrical roller bearing (3), a four-point contact ball bearing (4), a bearing bush (5), a box body (8) and a distance ring (9);

the both sides of box (8) are equipped with the through-hole, and two through-hole symmetries set up, cylinder roller bearing (2) have been inlayed to one side through-hole of box (8) is inside, inside bearing bush (5) have been inlayed to the opposite side through-hole of box (8), the inside of bearing bush (5) is along the even cylinder roller bearing (3) and four-point contact ball bearing (4) of inlaying of axis direction, the one end of shafting (1) and the inner circle fixed connection of cylinder roller bearing (2), the inner circle of No. two cylinder roller bearing (3) is passed in proper order to the other end of shafting (1), the inner circle and distance ring (9) of four-point contact ball bearing (4), rotate with box (8) and be connected, and distance ring (9) are through bolt and box (8) another side fixed connection.

2. A rolling bearing arrangement against external impacts, as claimed in claim 1, characterized in that: the oil injection device also comprises a first oil injection nozzle (6) and a second oil injection nozzle (7); the oil spray nozzle is characterized in that two sides of the upper surface of the box body (8) are respectively provided with an oil duct, one side of the box body (8) is provided with an oil spray nozzle (6), the oil spray nozzle (6) is communicated with the oil ducts, the other side of the box body (8) is provided with a second oil spray nozzle (7), and the second oil spray nozzle (7) is communicated with the oil ducts.

3. A rolling bearing arrangement against external impacts as set forth in claim 2, characterized in that: the first oil nozzle (6) is fixedly connected with one side of the box body (8) through a bolt.

4. A rolling bearing arrangement against external impacts as set forth in claim 2, characterized in that: and the second oil nozzle (7) is fixedly connected with the other side of the box body (8) through a bolt.

5. A rolling bearing arrangement against external impacts, as claimed in claim 1, characterized in that: and a 0.5mm gap is arranged at the matching part of the outer ring of the four-point contact ball bearing (4) and the bearing bush (5).

6. A rolling bearing arrangement against external impacts, as claimed in claim 1, characterized in that: the shafting (1) is connected with all the bearing inner rings in an interference manner.