CN212410068U

CN212410068U - Improved tool of bearing life testing machine

Info

Publication number: CN212410068U
Application number: CN202021221612.0U
Authority: CN
Inventors: 孙岳松; 尹福刚; 冯世昱; 吴祖琳; 苍施良; 孙凤玉; 唐丽虓; 杜姗珊; 谢忠明; 徐巍; 姜子洋; 王洪利
Original assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Current assignee: Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-26
Anticipated expiration: 2030-06-29

Abstract

The utility model relates to the technical field of bearing service life testing machines, in particular to an improved bearing service life testing machine tool, which comprises one or two tool units and a testing shaft, wherein each tool unit comprises an end bushing, a working bearing, an isolating ring, an L-shaped stop block and a nut; the bearing testing device comprises a testing shaft, a working bearing inner ring, a separating ring, a bearing to be tested, a bearing end face, a bearing outer ring, a bearing end bush, a nut and an L-shaped stop block, wherein the working bearing inner ring is sleeved on the testing shaft, the separating ring is sleeved on the testing shaft close to the working bearing, the bearing end face to be tested is sleeved on the separating ring, the bearing outer ring to be tested is sleeved on the end bush, the nut is in threaded connection with one end of the. The utility model discloses can fix a position the axial position of work bearing and waiting to test the bearing when solving the experimental great bearing of certain model testing machine, the unsatisfied problem of bush fixed test bearing of inner space.

Description

Improved tool of bearing life testing machine

Technical Field

The utility model relates to a bearing life test machine technical field, concretely relates to modified bearing life test machine frock.

Background

The bearing life test has an important function in the bearing industry all the time, the common models of the bearing life test machine are ABLT-1, ABLT-2, ABLT-4, ABLT-5 and the like, and the bearings which can be tested are different in size corresponding to different models. Every model testing machine inner space is limited, does the experiment for applicable more bearings, to the design of bearing frock certain requirement, both will satisfy bearing life testing machine inner space installation requirement, will guarantee the bearing axial fixity simultaneously, just can guarantee the normal operating of testing machine.

For a certain type of testing machine, the space for testing the bearing in the testing machine is not changed, and the bearing for testing needs to be fixed in the inner space of the testing bearing by a tool (a bush is required to be sleeved on the outer diameter of the bearing). When the size of the bearing is close to the inner space of a testing machine of a certain model, the traditional tool design (generally a testing shaft, an end bushing, a middle bushing, a spacer ring, a dismounting ring and a nut) is adopted, a larger testing machine is usually selected for the purpose that the bushing has enough space to fix the bearing, the inner space of the larger testing machine is increased, and only a thicker bushing tool can be used for fixing the bearing, so the cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

In view of prior art's defect, the utility model provides a modified bearing life test machine frock, it has adopted L type dog design, but L type dog positioning work bearing and test bearing's axial position when solving the experimental great bearing of certain model testing machine (great bearing is for the testing machine inner space), the problem of the unsatisfied fixed test bearing of bush of inner space, the normal operation demand of bearing testing machine can be satisfied in this design to make used frock cost reduction.

In order to achieve the purpose, the technical scheme adopted by the utility model is an improved bearing life tester tool, which comprises one or two tool units and a test shaft, wherein each tool unit comprises an end bushing, a working bearing, an isolating ring, an L-shaped stop block and a nut; the bearing testing device comprises a testing shaft, a working bearing inner ring, a separating ring, a bearing to be tested, a bearing end face, a bearing outer ring, a bearing end bush, a nut and an L-shaped stop block, wherein the working bearing inner ring is sleeved on the testing shaft, the separating ring is sleeved on the testing shaft close to the working bearing, the bearing end face to be tested is sleeved on the separating ring, the bearing outer ring to be tested is sleeved on the end bush, the nut is in threaded connection with one end of the.

Furthermore, the number of the tool units is two, and the two tool units are symmetrically arranged on the test shaft.

Furthermore, one end face of the L-shaped stop block is matched with the end bushing and the end face of the bearing to be tested simultaneously; and the other end surface of the L-shaped stop block is matched with the working bearing.

Furthermore, the end face matched with the end face of the end bushing and the end face of the bearing to be tested is the end face of the shorter side of the L-shaped stop block; the end face matched with the working bearing is the end face of the longer side of the L-shaped check block.

Furthermore, a through hole is formed in the longer side of the L-shaped check block, and the through hole avoids the contact position of the L-shaped check block and the working bearing.

Further, the working bearing outer diameter dimension is equal to the end bushing outer diameter dimension.

Furthermore, one end face of the isolating ring is matched with the end face of the inner ring of the bearing to be tested, and the other end face of the isolating ring is simultaneously matched with the end face of the working bearing and the shaft shoulder of the test shaft.

Further, the improved bearing life tester tool is relatively free of a central bushing compared with the traditional equipment.

To the further explanation of the utility model: this frock has adopted L type dog design, and L type dog can fix a position the axial position of work bearing and experimental bearing when solving the experimental great bearing of certain model testing machine (great bearing is for the testing machine inner space), and the problem of the unsatisfied fixed test bearing of bush in inner space, and the normal operation demand of bearing testing machine can be satisfied in this design to make used frock cost reduction.

The utility model has the advantages that: the axial position of the working bearing and the bearing to be tested can be positioned so as to solve the problem that the inner space does not meet the requirement of fixing the test bearing by the bushing when a large bearing is tested by a certain type of testing machine.

Drawings

FIG. 1 is a schematic structural view of a bearing life tester tool before the improvement of the utility model;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of an L-shaped stopper;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

in the figure: 1-1 part of shaft, 1-2 parts of end bushing, 1-3 parts of working bearing, 1-4 parts of middle bushing, 1-5 parts of disassembly ring, 1-6 parts of bearing to be tested, 1-7 parts of isolation ring, 1-8 parts of nut,

1. the test device comprises a test shaft, 2, a bearing to be tested, 3, an end bushing, 4, a spacer ring, 5, a working bearing, 6, an L-shaped stop block, 7 and a nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An improved tool for a bearing life tester comprises one or two tool units and a test shaft 1, wherein each tool unit comprises an end bushing 3, a working bearing 5, a spacer ring 4, an L-shaped stop block 6 and a nut 7; the inner ring of the working bearing 5 is sleeved on the test shaft 1, the isolation ring 4 is sleeved on the test shaft 1 close to the working bearing 5, the inner ring of the bearing 2 to be tested is sleeved on the test shaft 1, the inner side of the end face of the bearing 2 to be tested is close to the isolation ring 4, the end of the bearing 2 to be tested is sleeved with the end bushing 3, the nut 7 is in threaded connection with one end of the test shaft 1, the end face of the nut 7 compresses the end face of the inner ring of the bearing 2 to be tested, and the L-shaped stop block 6 is arranged between the working bearing 5 and the.

Further, the number of the tool units is two, and the two tool units are symmetrically arranged on the test shaft 1.

Furthermore, one end face of the L-shaped stop block 6 is matched with the end face of the end bushing 3 and the end face of the bearing 2 to be tested simultaneously; the other end face of the L-shaped stop block 6 is matched with the working bearing 5.

Further, the end face matched with the end face of the end bushing 3 and the end face of the bearing 2 to be tested is the end face of the shorter side of the L-shaped stop block 6; the end face matched with the working bearing 5 is the end face of the longer side of the L-shaped stop block 6.

Furthermore, a through hole is formed in the longer side of the L-shaped stop block 6, and the through hole avoids the contact position of the L-shaped stop block 6 and the working bearing 5.

Further, the outer diameter of the working bearing 5 is equal to the outer diameter of the end bushing 3.

Furthermore, one end face of the isolating ring 4 is matched with the end face of the inner ring of the bearing 2 to be tested, and the other end face of the isolating ring is simultaneously matched with the end face of the working bearing 5 and the shaft shoulder of the test shaft 1.

As shown in fig. 1, the conventional tooling is designed, wherein the outer diameter of the tooling Φ D, the total length l, the distance b from the end bushing to the end surface of the shaft, and the distance c between the two end bushings are fixed values (determined by the internal space structure of the testing machine), and the end bushings are provided with flanges to position the working bearings and comprise middle bushings. According to the traditional tool design (generally, a test shaft, an end bushing with a flange, a middle bushing, a spacer ring, a dismounting ring and a nut), a larger testing machine is usually selected for fixing a bearing by the bushing, the internal space of the larger testing machine is increased, and only a thicker bushing tool can be used for fixing the bearing, so the cost is greatly increased.

As shown in figure 2, because the bearing 2 to be tested is large, the requirements of installation sizes b and c are guaranteed, meanwhile, nuts 7 at two ends need to have certain widths to tighten the bearing, the design that the end bushing 3 is not provided with a flange is adopted, the problem that the flange of the end bushing is too thin due to insufficient space is prevented, meanwhile, the design of an L-shaped stop block 6 is added, and the axial positions of the bearing 2 to be tested and the working bearing 5 can be positioned at the same time. Because the bearing 2 to be tested is large, the load required during the test is large, in order to match the test load, the outer diameter of the working bearing is selected to be equal to the outer diameter D of the tool so as to bear the large test load, and the design of a middle bushing is eliminated.

As shown in fig. 3 and 4, regarding the L-shaped stopper 6, the a1 is designed to be sized to fit the end surface of the end bushing 3 and the end surface of the bearing 2 to be tested at the same time, and the B surface is fitted with the working bearing 5 to position the axial positions of the bearing 2 to be tested and the working bearing 5 at the same time. The L-shaped stop block 6 is provided with a through hole phi d, so that the L-shaped stop block can be taken out conveniently during the process of disassembling the tool.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a modified bearing life test machine frock which characterized in that: the device comprises one or two tool units and a test shaft, wherein each tool unit comprises an end bushing, a working bearing, a spacer ring, an L-shaped stop block and a nut; the bearing testing device comprises a testing shaft, a working bearing inner ring, a separating ring, a bearing to be tested, a bearing end face, a bearing outer ring, a bearing end bush, a nut and an L-shaped stop block, wherein the working bearing inner ring is sleeved on the testing shaft, the separating ring is sleeved on the testing shaft close to the working bearing, the bearing end face to be tested is sleeved on the separating ring, the bearing outer ring to be tested is sleeved on the end bush, the nut is in threaded connection with one end of the.

2. The improved bearing life tester tool of claim 1, wherein: the two tool units are symmetrically arranged on the test shaft.

3. The improved bearing life tester tool of claim 1 or 2, wherein: one end face of the L-shaped stop block is matched with the end bushing and the end face of the bearing to be tested simultaneously; and the other end surface of the L-shaped stop block is matched with the working bearing.

4. The improved bearing life tester tool of claim 3, wherein: the end face matched with the end bushing and the end face of the bearing to be tested is the end face of the shorter side of the L-shaped stop block; the end face matched with the working bearing is the end face of the longer side of the L-shaped check block.

5. The improved bearing life tester tool according to any one of claims 1, 2 and 4, wherein: and a through hole is formed in the longer side of the L-shaped check block and avoids the contact position of the L-shaped check block and the working bearing.

6. The improved bearing life tester tool according to any one of claims 1, 2 and 4, wherein: the improved bearing life tester tool is free of a middle bushing.