Large rolling bearing rigidity test tool

Abstract

The utility model relates to the field of bearings, and particularly discloses a rigidity test tool for a large rolling bearing. The large rolling bearing rigidity test tool comprises a test base, a load block and a measuring instrument, the test base is provided with a mounting hole, and the mounting hole comprises an outer ring mounting segment and an instrument mounting segment from top to bottom; an opening is formed in the upper end of the outer ring mounting section, and the diameter of the outer ring mounting section is larger than that of the instrument mounting section; the outer ring mounting section is communicated with the instrument mounting section, and a step surface between the outer ring mounting section and the instrument mounting section is an outer ring positioning surface; the measuring instrument is arranged in the instrument mounting section, and the measuring end of the measuring instrument is arranged upwards; and an inner ring loading surface is arranged on the load block. The large rolling bearing rigidity testing tool can well meet the testing requirements of large rolling bearings, and has the advantages of being simple in structure and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bearing field, concretely relates to a large -scale rolling bearing rigidity test frock. BACKGROUND

[0002] The definition of rolling bearing stiffness is the external load required to produce a unit of relative elastic displacement between the inner and outer rings of the bearing in the load direction. When the bearing bears radial load, relative displacement occurs between the inner and outer rings, which is considered as radial stiffness. When the corresponding bearing bears axial load, relative displacement occurs between the inner and outer rings, which is considered as axial stiffness. Rolling bearings are widely used in automobile, rolling mill, mine and metallurgy industries, and the stiffness of the bearing is directly related to the precision, vibration and life parameters of the equipment.

[0003] At present, there is no corresponding technical standard for bearing stiffness testing. The Chinese invention patent application with the application publication number CN 114894477A discloses a bearing stiffness test method. The test device is used in the test. The test device includes a loading unit, a test bench, a test unit and a measuring unit. First, the bearing to be tested is installed on the test unit, and then the test bench is installed on the loading unit. The loading unit is controlled to move towards the test bench. When the test unit moves to the position close to the test bench, the test unit and the test bench are fixedly connected, and the readings of the measuring unit and the loading unit are zeroed. The measuring and control system is used to control the loading unit to apply load to the bearing to be tested, and the measuring device is used to measure the deformation of the bearing to be tested under different directions of load. After collecting multiple sets of data under different loads, the relationship between the deformation of the bearing to be tested and the load can be obtained, and the stiffness data of the bearing to be tested can be obtained. However, the above test method is only suitable for micro bearings and is not conducive to the testing of large bearings, and does not have the ability to directly test the deformation of the inner ring of large rolling bearings.

[0004] The purpose of the present application is to provide a large rolling bearing rigidity test frock suitable for large rolling bearings. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a large rolling bearing rigidity test frock which can well adapt to the testing requirements of large rolling bearings and has the advantages of simple structure and convenient operation.

[0006] In order to solve the above technical problems, the utility model provides a technical scheme as follows: a large rolling bearing rigidity test tool, including test base, load block and measuring instrument, the test base is equipped with mounting hole, the mounting hole includes outer ring mounting section and instrument mounting section from top to bottom, the upper end of the outer ring mounting section is opened, and the diameter of the outer ring mounting section is larger than the diameter of the instrument mounting section, the outer ring mounting section and the instrument mounting section are communicated, and the step surface between the outer ring mounting section and the instrument mounting section is an outer ring positioning surface, the measuring instrument is arranged in the instrument mounting section, and the measuring end of the measuring instrument is arranged upwards, the load block is equipped with inner ring loading surface.

[0007] When testing, the bearing is placed in the mounting hole, one end of the bearing outer ring is placed on the outer ring positioning surface, then the measuring instrument is adjusted, the measuring end of the measuring instrument is in contact with the lower end surface of the bearing inner ring, finally the load block is placed on the inner ring, the inner ring loading surface is in contact with the upper end surface of the bearing inner ring, at this time the variation of the measuring instrument is the displacement of the bearing inner ring relative to the bearing outer ring, and the rigidity parameter of the bearing can be obtained according to the displacement and the load.

[0008] The large rolling bearing rigidity test tool can well adapt to the test requirement of the large rolling bearing, and has the advantages of simple structure and convenient operation.

[0009] Preferably, the side surface of the test base is provided with a window, the window is communicated with the mounting hole, and the reading of the measuring instrument can be directly obtained through the window.

[0010] Preferably, the load block is provided with a centering shaft, an inner ring loading step is annularly arranged on the outer side of the centering shaft, and the inner ring loading surface is arranged on the inner ring loading step. The centering shaft can be inserted into the bearing inner ring to realize the positioning between the load block and the bearing inner ring.

[0011] Preferably, the outer ring positioning surface is provided with an operation gap, the operation gap is located at the inner edge of the outer ring positioning surface and is communicated with the mounting hole.

[0012] The operation gap can provide convenience for the dismounting operation of the bearing. When the test object is a separated bearing, for example, a tapered roller bearing, the bearing inner ring, the bearing outer ring and the rolling body are sequentially mounted, and at this time the operation gap can provide sufficient operation space for the dismounting of the bearing outer ring.

[0013] Preferably, the number of the measuring instruments is at least two, and each measuring instrument is annularly distributed around the center line of the mounting hole.

[0014] The average of the measured values of each measuring instrument is taken as the final measurement result, and the measurement error caused by factors such as improper installation can be reduced through multi-point measurement. In addition, when the measurement values of each measuring instrument are too different, it can be determined that the processing is unqualified or the installation is not in place, and the measurement is stopped.

[0015] Preferably, the measuring instrument is arranged radially and axially adjustable in the installation hole.

[0016] Preferably, the test base is provided with an instrument installation assembly, the instrument installation assembly comprises an axial adjusting rod and a radial adjusting rod, the axial adjusting rod is connected with the test base, the axial adjusting rod and the radial adjusting rod are arranged vertically opposite, and the measuring instrument is connected with the radial adjusting rod.

[0017] The radial adjusting rod and the axial adjusting rod are provided with a transition adjusting seat, the radial adjusting rod passes through the transition adjusting seat, and the radial adjusting rod and the transition adjusting seat are provided with a first locking unit, the axial adjusting rod passes through the transition adjusting seat, and the axial adjusting rod and the transition adjusting seat are provided with a second locking unit.

[0018] Through the radial and axial adjustment of the measuring instrument, the measurement requirements of bearings of different types, models and specifications can be met, and the measuring instrument has the advantage of wide application range.

[0019] Preferably, the side surface of the test base is provided with a guide groove, the guide groove extends along the axis of the installation hole and is arranged through the side wall of the installation hole; the axial adjusting rod and the transition adjusting seat are arranged outside the test base, and the radial adjusting rod passes through the guide groove and is partially inserted into the installation hole.

[0020] The axial adjusting rod and the transition adjusting seat are arranged outside the test base, so that the radial and axial adjustment of the measuring instrument can be completed outside the test base, and the operation convenience is good. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the rigid test tool for large rolling bearings of the embodiment;

[0022] Figure 2 It is an exploded view of the rigid test tool for large rolling bearings of the embodiment;

[0023] Figure 3 It is a sectional view of the rigid test tool for large rolling bearings of the embodiment;

[0024] Figure 4 It is a structure schematic view of the test base of the rigid test tool for large rolling bearings of the embodiment;

[0025] Figure 5It is another view structural schematic diagram of the test base in the large rolling bearing rigidity test tool of the embodiment;

[0026] Figure 6 It is a structural schematic diagram of the load block in the large rolling bearing rigidity test tool of the embodiment;

[0027] Figure 7 It is a structural schematic diagram of the instrument installation assembly and the measuring instrument cooperation in the large rolling bearing rigidity test tool of the embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model. EMBODIMENT

[0029] As shown in Figures 1-3 , a large rolling bearing rigidity test tool, comprising a test base 1, a load block 2 and a measuring instrument 5, as shown in Figures 2-5 , the test base 1 is provided with a mounting hole 12, the mounting hole 12 comprises an outer ring mounting section and an instrument mounting section from top to bottom. The upper end of the outer ring mounting section is open, and the diameter of the outer ring mounting section is greater than that of the instrument mounting section. The outer ring mounting section and the instrument mounting section are communicated, and the step surface between the outer ring mounting section and the instrument mounting section is an outer ring positioning surface 14. The measuring instrument 5 is arranged in the instrument mounting section, and the measuring end of the measuring instrument 5 is arranged upward.

[0030] As shown in Figure 2 and Figure 6 , the load block 2 is provided with an inner ring loading surface 22. Specifically, the load block 2 is provided with a centering shaft 23, the outer side of the centering shaft 23 is annularly provided with an inner ring loading step 21, and the inner ring loading surface 22 is arranged on the inner ring loading step 21. The centering shaft 23 can be inserted into the bearing inner ring to realize the positioning between the load block 2 and the bearing inner ring.

[0031] As shown in Figure 1 , specifically, the side surface of the test base 1 is provided with a window 11, the window 11 is communicated with the mounting hole 12, and the reading of the measuring instrument 5 can be directly obtained through the window 11.

[0032] Specifically, the outer ring positioning surface 14 is provided with an operation gap 15, which is located at the inner edge of the outer ring positioning surface 14 and communicates with the mounting hole 12. The operation gap 15 can provide convenience for dismounting and mounting the bearing. When the test object is a separated bearing, such as a tapered roller bearing, the inner ring, the outer ring and the rolling elements are sequentially mounted during dismounting and mounting of the bearing. At this time, the operation gap 15 can provide sufficient operation space for dismounting and mounting the outer ring.

[0033] During the test, the bearing 3 is placed in the mounting hole 12, and one end of the outer ring is placed on the outer ring positioning surface 14. Then, the measuring instrument 5 is adjusted so that the measuring end of the measuring instrument 5 is in contact with the lower end surface of the inner ring. Finally, the load block 2 is placed on the inner ring, and the inner ring loading surface 22 is in contact with the upper end surface of the inner ring. At this time, the change in the reading of the measuring instrument 5 is the displacement of the inner ring relative to the outer ring, and the rigidity parameter of the bearing can be obtained according to the displacement and the load.

[0034] As a specific embodiment, as shown in Figures 1-5 , the number of measuring instruments 5 is at least two, and each measuring instrument 5 is uniformly distributed around the center line of the mounting hole 12. The average of the measured values of each measuring instrument 5 is the final measurement result. Through multi-point measurement, the measurement error caused by improper installation and other factors can be reduced. In addition, when the measured values of each measuring instrument 5 differ too much, it can be determined that the processing is unqualified or the installation is not in place, and the measurement is stopped.

[0035] Further, as shown in Figure 1 , Figure 3 and Figure 7 , the measuring instrument 5 is adjustably arranged in the radial direction and the axial direction in the mounting hole 12.

[0036] Specifically, as shown in Figure 7 , the test base 1 is provided with an instrument mounting assembly 4, the instrument mounting assembly 4 includes an axial adjustment rod 42 and a radial adjustment rod 43, the axial adjustment rod 42 is connected with the test base 1, the axial adjustment rod 42 and the radial adjustment rod 43 are arranged in opposite perpendicular directions, and the measuring instrument 5 is connected with the radial adjustment rod 43. A transition adjustment seat 41 is arranged between the radial adjustment rod 43 and the axial adjustment rod 42, the radial adjustment rod 43 passes through the transition adjustment seat 41, and a first locking unit is arranged between the radial adjustment rod 43 and the transition adjustment seat 41. The axial adjustment rod 42 passes through the transition adjustment seat 41, and a second locking unit is arranged between the axial adjustment rod 42 and the transition adjustment seat 41.

[0037] Through the radial and axial adjustment of the measuring instrument 5, the measurement requirements of bearings of different types, models and specifications can be met, and the use range is wide.

[0038] As Figure 1 、 Figure 3 and Figure 7 shown, specifically, the side of the test base 1 is provided with a guide slot 13, the guide slot 13 extends along the axis of the mounting hole 12, and is provided through the side wall of the mounting hole 12. The axial adjusting rod 42 and the transition adjusting seat 41 are provided outside the test base 1, the radial adjusting rod 43 passes through the guide slot 13, and is partially inserted into the mounting hole 12. The axial adjusting rod 42 and the transition adjusting seat 41 are provided outside the test base 1, the radial and axial adjustment operations of the measuring instrument 5 can be completed outside the test base 1, and the operation convenience is good.

[0039] The large rolling bearing rigidity test tool of the application can well adapt to the test requirements of large rolling bearings, and has the advantages of simple structure and convenient operation.

[0040] In summary, the above only for the preferred embodiments of the present application, and not to limit the present application, any modification, equivalent replacement and improvement within the spirit and principles of the present application, etc. should be included in the protection scope of the present application.

Claims

1. A large rolling bearing rigidity test tool characterized by comprising: The utility model provides a test base, load block and measuring instrument, the test base is equipped with mounting hole, the mounting hole from top to bottom includes outer ring mounting section and instrument mounting section, the outer ring mounting section's upper end is open, and the diameter of outer ring mounting section is larger than the diameter of instrument mounting section, the outer ring mounting section and instrument mounting section are communicated, and the step surface between outer ring mounting section and instrument mounting section is outer ring positioning surface, the measuring instrument is arranged in instrument mounting section, and the measuring end of measuring instrument is set up upwards, the load block is equipped with inner ring loading surface.

2. The rigidity test tool for large rolling bearings according to claim 1, characterized in that: The side of the test base is equipped with a window, and the window is communicated with the mounting hole.

3. The rigid testing tool for large rolling bearings according to claim 1, characterized in that: The load block is equipped with a centering shaft, and an inner ring loading step is annularly arranged on the outer side of the centering shaft.

4. The rigid testing tool for large rolling bearings according to claim 1, characterized in that: The outer ring positioning surface is equipped with an operation gap, and the operation gap is located at the inner edge of the outer ring positioning surface and communicated with the mounting hole.

5. The rigid testing tool for large rolling bearings according to claim 1, characterized in that: The number of measuring instruments is at least two, and each measuring instrument is annularly and uniformly distributed around the center line of the mounting hole.

6. The rigid testing tooling for large rolling bearings of any of claims 1-5, wherein: The measuring instruments are radially and axially adjustable in the mounting hole.

7. The rigid testing tool for large rolling bearings according to claim 6, characterized in that: The test base is equipped with an instrument mounting assembly, the instrument mounting assembly includes an axial adjusting rod and a radial adjusting rod, the axial adjusting rod is connected with the test base, the axial adjusting rod and the radial adjusting rod are oppositely and perpendicularly arranged, and the measuring instruments are connected with the radial adjusting rod. A transition adjusting seat is arranged between the radial adjusting rod and the axial adjusting rod, the radial adjusting rod passes through the transition adjusting seat, a first locking unit is arranged between the radial adjusting rod and the transition adjusting seat, the axial adjusting rod passes through the transition adjusting seat, and a second locking unit is arranged between the axial adjusting rod and the transition adjusting seat.

8. The rigid testing tool for large rolling bearings according to claim 7, characterized in that: The side of the test base is equipped with a guide groove, the guide groove extends along the axis of the mounting hole and penetrates the side wall of the mounting hole, the axial adjusting rod and the transition adjusting seat are arranged outside the test base, the radial adjusting rod passes through the guide groove and is partially inserted into the mounting hole.

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