CN112577741A

CN112577741A - Cantilever bearing tester

Info

Publication number: CN112577741A
Application number: CN202011595119.XA
Authority: CN
Inventors: 穆军; 安浩俊; 范国星; 郑维先; 闫众; 栾景燕; 杨明亮; 王振元
Original assignee: AVIC Harbin Bearing Co Ltd
Current assignee: AVIC Harbin Bearing Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-03-30

Abstract

The utility model provides a cantilever bearing tester, it relates to a tester, concretely relates to cantilever bearing tester. The invention provides a cantilever bearing tester, aiming at solving the problem of poor test performance of the existing cantilever bearing tester. The device comprises a test bearing box body, a support bearing box body, a test shaft, a base, a front support bearing, a rear support bearing, an axial loading hydraulic cylinder and a radial loading hydraulic cylinder. The invention belongs to the field of bearing preparation.

Description

Cantilever bearing tester

Technical Field

The invention relates to a tester, in particular to a cantilever bearing tester, and belongs to the field of bearing preparation.

Background

The conventional cantilever bearing tester is mainly used for testing a single-sleeve bearing with the inner diameter phi of 90-180 mm of a radial ball bearing and a roller bearing, the rotating speed range is 3000-14000 r/min when the radial load is 3KN, and when the rotating speed is higher than 14000r/min, large vibration is generated, and the bearings at two supporting positions are heated and fail and damaged.

Disclosure of Invention

The invention provides a cantilever bearing tester, aiming at solving the problem of poor test performance of the existing cantilever bearing tester.

The technical scheme adopted by the invention for solving the problems is as follows: the device comprises a test bearing box body, a support bearing box body, a test shaft, a base, a front support bearing, a rear support bearing, an axial loading hydraulic cylinder and a radial loading hydraulic cylinder;

the length direction of experimental bearing box and support bearing box along the base sets up side by side on the upper surface of base, the level of experimental axle sets up, and the axis of experimental axle is parallel with the central line of base along length direction, preceding support bearing, back support bearing is installed in the support bearing box by preceding to back in proper order, preceding support bearing, back support bearing suit is on experimental axle, the front end of experimental axle is located experimental bearing box, experimental bearing suit is at the front end of experimental axle, and experimental bearing is located experimental bearing box, the front end at experimental bearing box is installed to the axial loading pneumatic cylinder, one side at experimental bearing box is installed to the radial loading pneumatic cylinder.

Further, the length of the test shaft was 700 mm.

Furthermore, the support bearing box body comprises a front support seat, a rear support seat and three oil injection rings; the front support seat is arranged at the front end in the support bearing box body, the rear support seat is arranged at the rear end in the support bearing box body, two oil injection rings are arranged on the front support seat, and an oil injection ring is arranged on the rear support seat.

Furthermore, oil return openings are formed in one side, facing the rear supporting seat, of the front supporting seat and one side, facing the front supporting seat, of the rear supporting seat.

Furthermore, a plurality of oil return notches are formed in the inner side and the outer side of each oil injection ring along the circumferential direction of the oil injection ring, an oil injection hole is formed in each oil injection ring, and an oil inlet groove is formed in the outer edge of each oil injection ring.

Furthermore, an oil inlet and an oil return opening are formed in the front supporting seat and the rear supporting seat.

Furthermore, an external oil return port is arranged at the rear end of the rear supporting seat, and an oil injection hole is formed in the front supporting seat.

Furthermore, a plurality of oil return grooves are formed in the front supporting seat and the rear supporting seat.

The invention has the beneficial effects that: the invention realizes that the rotating speed reaches the range of 3000-24000 r/min when the radial load is 3KN and the axial load is 1 KN. The test performance of the cantilever bearing tester is greatly improved, and more reliable tester resources are provided for the test of the large-scale aviation bearing;

drawings

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the internal structure of the support bearing housing;

fig. 4 is a cross-sectional view of the rear support base.

Detailed Description

The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and the cantilever bearing tester of the present embodiment includes a test bearing box 1, a support bearing box 2, a test shaft 3, a base 4, a front support bearing 5, a rear support bearing 6, an axial loading hydraulic cylinder 7, and a radial loading hydraulic cylinder 8;

the test bearing box 1 and the support bearing box 2 are arranged on the upper surface of the base 4 side by side along the length direction of the base 4, the test shaft 3 is horizontally arranged, the axis of the test shaft 3 is parallel to the central line of the base 4 along the length direction, the front support bearing 5, the rear support bearing 6 is sequentially arranged in the support bearing box 2 from front to back, the front support bearing 5, the rear support bearing 6 is sleeved on the test shaft 3, the front end of the test shaft 3 is positioned in the test bearing box 1, the test bearing 9 is sleeved at the front end of the test shaft 3, the test bearing 9 is positioned in the test bearing box 1, the axial loading hydraulic cylinder 7 is arranged at the front end of the test bearing box 1, and the radial loading hydraulic cylinder 8 is arranged at one side of the test bearing box 1.

The second embodiment is as follows: the present embodiment will be described with reference to fig. 1 to 4, and the length of the test shaft 3 of the cantilever bearing tester according to the present embodiment is 700 mm.

In the embodiment, the maximum deflection of the test shaft 3 is reduced from 0.041mm to 0.265mm, the support reaction force of the support part is also reduced, the centrifugal force of the test shaft is also greatly reduced, the shaft system is more stable, and the maximum critical rotating speed of the test shaft system is increased from 14000rpm to 24000 rpm.

Other components and connections are the same as those in the first embodiment.

The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the support bearing housing 2 of the cantilever bearing tester of the present embodiment includes a front support base 9, a rear support base 10, and three oil spray rings 11; the front supporting seat 9 is arranged at the front end in the supporting bearing box body 2, the rear supporting seat 10 is arranged at the rear end in the supporting bearing box body 2, two oil spraying rings 11 are arranged on the front supporting seat 9, and one oil spraying ring 11 is arranged on the rear supporting seat 10. Other components and connections are the same as those in the first embodiment.

The fourth concrete implementation mode: referring to fig. 1 to 4, the present embodiment is described, and in the cantilever bearing tester of the present embodiment, oil return ports 12 are provided on both the side of the front support base 9 facing the rear support base 10 and the side of the rear support base 10 facing the front support base 9. Other components and connection relationships are the same as those in the third embodiment.

The fifth concrete implementation mode: referring to fig. 1 to 4, the present embodiment is described, in which a plurality of oil return notches 11-1 are formed on the inner side and the outer side of each oil injection ring 11 of the cantilever bearing tester in the present embodiment along the circumferential direction thereof, an oil injection hole 11-2 is formed in the oil injection ring 11, and an oil inlet groove 11-3 is formed in the outer edge of the oil injection ring 11. By the arrangement, the lubrication and cooling of the bearing at the supporting part are ensured. Other components and connection relationships are the same as those in the third embodiment.

The sixth specific implementation mode: referring to fig. 1 to 4, the embodiment is described, and both the front support 9 and the rear support 10 of the cantilever bearing tester of the embodiment are provided with an oil inlet 13 and an oil return port 14. Other components and connection relationships are the same as those in the third embodiment.

The seventh embodiment: referring to fig. 1 to 4, the embodiment is described, in which the rear end of the rear support base 10 of the cantilever bearing tester of the embodiment is provided with an external oil return port 10-1, and the front support base 9 is provided with an oil spray hole 9-1. Other components and connection relationships are the same as those in the third embodiment.

The specific implementation mode is eight: referring to fig. 1 to 4, the present embodiment will be described, and a plurality of oil return grooves 15 are formed in both the front support 9 and the rear support 10 of the cantilever bearing tester according to the present embodiment. Other components and connection relationships are the same as those in the third embodiment.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The cantilever bearing tester is characterized in that: the cantilever bearing tester comprises a test bearing box body (1), a supporting bearing box body (2), a test shaft (3), a base (4), a front supporting bearing (5), a rear supporting bearing (6), an axial loading hydraulic cylinder (7) and a radial loading hydraulic cylinder (8);

the test bearing box body (1) and the support bearing box body (2) are arranged on the upper surface of the base (4) side by side along the length direction of the base (4), the test shaft (3) is horizontally arranged, the axis of the test shaft (3) is parallel to the central line of the base (4) along the length direction, the front support bearing (5) and the rear support bearing (6) are sequentially arranged in the support bearing box body (2) from front to back, the front support bearing (5) and the rear support bearing (6) are sleeved on the test shaft (3), the front end of the test shaft (3) is positioned in the test bearing box body (1), the test bearing (9) is sleeved at the front end of the test shaft (3), and the test bearing (9) is positioned in the test bearing box body (1), the axial loading hydraulic cylinder (7) is installed at the front end of the test bearing box body (1), and the radial loading hydraulic cylinder (8) is installed at one side of the test bearing box body (1).

2. The cantilever bearing tester of claim 1, wherein: the length of the test shaft (3) is 700 mm.

3. The cantilever bearing tester of claim 1, wherein: the supporting bearing box body (2) comprises a front supporting seat (9), a rear supporting seat (10) and three oil spraying rings (11); the front supporting seat (9) is arranged at the front end in the supporting bearing box body (2), the rear supporting seat (10) is arranged at the rear end in the supporting bearing box body (2), two oil spraying rings (11) are arranged on the front supporting seat (9), and one oil spraying ring (11) is arranged on the rear supporting seat (10).

4. The cantilever bearing tester of claim 3, wherein: oil return openings (12) are formed in one side, facing the rear supporting seat (10), of the front supporting seat (9) and one side, facing the front supporting seat (9), of the rear supporting seat (10).

5. The cantilever bearing tester of claim 3, wherein: the inner side and the outer side of each oil injection ring (11) are respectively provided with a plurality of oil return notches (11-1) along the circumferential direction, oil injection holes (11-2) are arranged in the oil injection rings (11), and the outer edges of the oil injection rings (11) are provided with oil inlet grooves (11-3).

6. The cantilever bearing tester of claim 3, wherein: an oil inlet (13) and an oil return opening (14) are arranged on the front supporting seat (9) and the rear supporting seat (10).

7. The cantilever bearing tester of claim 3, wherein: the rear end of the rear supporting seat (10) is provided with an external oil return port (10-1), and the front supporting seat (9) is provided with an oil spray hole (9-1).

8. The cantilever bearing tester of claim 3, wherein: a plurality of oil return grooves (15) are arranged on the front supporting seat (9) and the rear supporting seat (10).