CN-121994483-A - Test device and test method for engineering machinery bearing

CN121994483ACN 121994483 ACN121994483 ACN 121994483ACN-121994483-A

Abstract

The invention relates to the technical field of test equipment, in particular to a test device and a test method for an engineering machinery bearing. The test accompanying assembly is provided with at least one test accompanying bearing seat, the test main body is provided with a test bearing seat, the test accompanying bearing seat and the test bearing seat are coaxially arranged, the test accompanying bearing seat is internally used for accommodating a test accompanying bearing, and the test bearing seat is used for accommodating a bearing to be tested. The output end of the driving assembly is connected with a main shaft, and the end part of the main shaft sequentially penetrates through and is inserted into the accompanying test bearing and the bearing to be tested. A monitoring space is formed between the test bearing seat and the bearing outer ring to be tested, and the monitoring space is used for placing a monitoring sensor. A monitoring space is formed between the test bearing seat and the bearing to be tested, and the monitoring space is used for placing key response signals such as stress, strain, acceleration and the like of the monitoring outer ring. Because the monitoring space is closer to the main shaft than the outer ring of the bearing seat, the detection result is more accurate.

Inventors

WANG BO
CHENG XU
Huang Zirao
LI BOWEN
ZHAO YULAI
HAN QINGKAI
WANG GUANGBIN

Assignees

东北大学佛山研究生创新学院
东北大学

Dates

Publication Date: 20260508
Application Date: 20260121

Claims (10)

1. The test device for the engineering machinery bearing is characterized by comprising a driving component (1), a test accompanying component (2) and a test main body (3); the test accompanying assembly (2) is provided with at least one test accompanying bearing seat, the test main body (3) is provided with a test bearing seat (31), the test accompanying bearing seat and the test bearing seat (31) are coaxially arranged, a test accompanying bearing is arranged in the test accompanying bearing seat, and the test bearing seat (31) is used for placing a bearing (32) to be tested; The output end of the driving assembly (1) is connected with a main shaft (4), and the end part of the main shaft (4) sequentially penetrates through and is inserted into the accompanying test bearing and the bearing to be tested (32); a monitoring space is formed between the test bearing seat (31) and the outer ring of the bearing (32) to be tested, and the monitoring space is used for placing a monitoring sensor (9).
2. The test device for engineering machinery bearings according to claim 1, wherein the monitoring space is a rectangular groove (5) extending along the axial direction of the bearing seat, the rectangular groove (5) is arranged on the inner side wall of the test bearing seat (31) and/or the outer side wall of the bearing (32) to be tested, and the monitoring sensor (9) is arranged in the rectangular groove (5).
3. A test device for a construction machine bearing according to claim 2, wherein a plurality of the rectangular grooves (5) are provided, the plurality of the rectangular grooves (5) being arranged at intervals along the circumference of the inner side wall of the test bearing housing (31) and/or along the circumference of the outer side wall of the bearing (32) to be tested.
4. A test device for engineering machinery bearings according to claim 3, wherein the rectangular groove (5) is formed along the axial direction of the test bearing seat (31) and/or the end face of the bearing (32) to be tested, the axial depth of the rectangular groove is 120mm-160mm, the radial length is 5mm-15mm, and the circumferential length is 8mm-15mm.
5. The test rig for bearings of construction machines according to claim 1, characterized in that the test body (3) further comprises a loading box (33), an axial loading drive (34) and a radial loading drive (35); The test bearing seat (31) is arranged in the loading box body (33), the axial loading driving piece (34) and the radial loading driving piece (35) are both positioned outside the loading box body (33), the axial loading driving piece (34) is arranged on the first side face (332) of the loading box body (33), the radial loading driving piece (35) is arranged on the fourth side face (335)/second side face (333) of the loading box body (33), the driving end of the axial loading driving piece (34) penetrates through the first side face (332) and abuts against a bearing in the test bearing seat (31), so that axial loading force can be provided for the bearing (32) to be tested, and the driving end of the radial loading driving piece (35) penetrates through the fourth side face (335)/second side face (333) and abuts against one side wall of the test bearing seat (31), so that radial loading force can be provided for the bearing (32) to be tested.
6. The test device for a construction machine bearing according to claim 5, wherein the loading box (33) comprises a bottom wall (331), and the first side (332), the second side (333), the third side (334) and the fourth side (335) are arranged above the bottom wall (331) in sequence; The third side (334) is provided with an inverted trapezoid groove (336), the bottom of the inverted trapezoid groove (336) is provided with a second arc-shaped groove (337) for placing a second accompanying bearing (22), the second arc-shaped groove (337) is used for placing the second accompanying bearing (22) as a second lower accompanying bearing seat, a connecting end face is formed between the bottom of the inverted trapezoid groove (336) and the second arc-shaped groove (337), and the connecting end face is detachably connected with a second upper accompanying bearing seat (338).
7. The test device for a bearing of an engineering machine of claim 6, wherein the test accompanying component (2) comprises a first test accompanying structure (23) and a second test accompanying structure (24); The second test accompanying structure (24) is located between the first test accompanying structure (23) and the test main body (3), the first test accompanying structure (23) comprises a first lower test accompanying bearing seat (231), a first arc-shaped groove (232) is formed in the top of the first lower test accompanying bearing seat (231), the first arc-shaped groove (232) is used for accommodating the first test accompanying bearing (21), and a first upper test accompanying bearing seat (233) is detachably connected to the first lower test accompanying bearing seat (231).
8. A test device for a bearing of an engineering machine as claimed in claim 1, characterized in that a torque sensor (6) is arranged between the drive assembly (1) and the spindle (4).
9. The test device for the engineering machinery bearing, as set forth in claim 1, further comprising a working table (7), wherein the working table (7) is provided with a T-shaped groove, and the driving component (1), the accompanying component (2) and the test main body (3) are detachably mounted on the working table (7) through sliding plates (8).
10. A test method for a bearing of an engineering machine, which test method is based on the test device for a bearing of an engineering machine according to any one of claims 1-9, comprising the following steps: s1, selecting a driving component (1) and a partner testing component (2) according to a bearing to be tested by the test main body (3); S2, sequentially installing the driving assembly (1), the accompanying test assembly (2) and the test main body (3) on a workbench surface (7); S3, connecting the main shaft (4) with the driving assembly (1), and sequentially penetrating through the accompanying test bearing of the accompanying test assembly (2) and the test bearing of the test main body (3); s4, starting the driving assembly (1), and monitoring through a monitoring sensor (9) in the monitoring space.

Description

Test device and test method for engineering machinery bearing Technical Field The invention relates to the technical field of test equipment, in particular to a test device and a test method for engineering machinery bearings. Background The engineering machinery bearing runs for a long time under complex load and severe working conditions, and has the characteristics of multiple load types, large fluctuation, strong environmental vibration and the like. In actual work, the engineering machinery not only bears the axial and radial composite load, but also can bear the actions of frequent start and stop, low-speed heavy load and impact load. These conditions lead to complex dynamic responses of the bearing during operation, thereby affecting its life and reliability. Therefore, the engineering machinery bearing needs to be effectively tested by adopting a test bed before being used, so that the service life and the reliability of the engineering machinery bearing are ensured. The existing engineering machinery bearing generally adopts a test device to test the engineering machinery bearing, specifically, the whole test device is placed on a workbench surface, the existing test device comprises a driving part, at least one test accompanying bearing component and a test bearing component which are sequentially arranged on the workbench surface along the longitudinal direction of the workbench surface, the driving part, the test accompanying bearing component and the test bearing component are coaxially arranged, and the test device further comprises a test main shaft, wherein one end of the test main shaft is connected with the driving part, and the other end of the test main shaft sequentially penetrates through the test accompanying bearing component and the test bearing component, so that the test is completed. At present, in order to research the stress state, dynamic response and performance degradation rule of a bearing under a real working condition, a special bearing test bed is usually required to be relied on to carry out loading and monitoring experiments. The existing monitoring mode is to attach a monitoring sensor to the circumferential side wall of a bearing seat of a bearing to be tested so as to monitor the bearing to be tested, but the existing monitoring is only applicable to bearings with smaller sizes, and the main reason is that once the size of the bearing is larger, the wall of the bearing is correspondingly thickened, and once the wall of the bearing is thickened, the monitoring sensor is far away from the center of the bearing to be tested, so that the accuracy of experimental data collected by the sensor is affected, and the detection accuracy is reduced. Disclosure of Invention In view of the above-mentioned drawbacks and shortcomings of the prior art, the present invention provides a test device and a test method for a bearing of an engineering machine, which solve the technical problems that once the size of the bearing is large, the wall of the bearing will be thickened correspondingly, and once the wall of the bearing is thickened, the monitoring sensor will be far from the center of the bearing to be tested, thereby affecting the accuracy of the experimental data collected by the sensor, and further reducing the detection accuracy. In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps: in one aspect, the embodiment of the invention provides a test device for a bearing of an engineering machine, which comprises a driving assembly, a test accompanying assembly and a test main body; The test accompanying assembly is provided with at least one test accompanying bearing seat, the test main body is provided with a test bearing seat, the test accompanying bearing seat and the test bearing seat are coaxially arranged, the test accompanying bearing seat is internally used for placing a test accompanying bearing, and the test bearing seat is used for placing a bearing to be tested; The output end of the driving assembly is connected with a main shaft, and the end part of the main shaft sequentially penetrates through and is inserted into the accompanying bearing and the bearing to be tested; and a monitoring space is formed between the test bearing seat and the bearing outer ring to be tested, and the monitoring space is used for placing a monitoring sensor. Optionally, the monitoring space is a rectangular groove extending along the axial direction of the bearing seat, the rectangular groove is arranged on the inner side wall of the test bearing seat and/or the outer side wall of the bearing to be tested, and the monitoring sensor is arranged in the rectangular groove. Optionally, a plurality of rectangular grooves are formed, and the plurality of rectangular grooves are arranged at intervals along the circumferential direction of the inner side wall of the test bearing seat and/or along the circumferential direction of t