CN113447177B - Double-half inner ring bearing friction torque detection device - Google Patents
Double-half inner ring bearing friction torque detection device Download PDFInfo
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- CN113447177B CN113447177B CN202110671374.6A CN202110671374A CN113447177B CN 113447177 B CN113447177 B CN 113447177B CN 202110671374 A CN202110671374 A CN 202110671374A CN 113447177 B CN113447177 B CN 113447177B
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- threaded rod
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- gasket
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
Abstract
The invention discloses a double-half inner ring bearing friction torque detection device which comprises a detection assembly and a pre-tightening assembly, wherein the detection assembly comprises a motor, a torque sensor and an installation cavity, a placing cavity is arranged on the wall of the installation cavity, the pre-tightening assembly comprises a mandrel, a load block is arranged on the mandrel, an inner cavity is arranged in the mandrel, a threaded rod penetrates through the inner cavity, a driving structure is further arranged in the inner cavity, a stop block is arranged on the outer wall of the mandrel, a clamping element is arranged on the threaded rod, the clamping element and the threaded rod are detachably arranged, and a gap exists between the threaded rod and the installation cavity. When the bearing is required to be detected, the test bearing and the pre-tightening assembly are placed into the installation cavity together, the outer ring of the test bearing is embedded into the placement cavity and is in interference fit with the placement cavity, after the pre-tightening assembly is in a static state, the motor is started to drive the installation cavity to rotate, the torque sensor can measure the friction torque value of the test bearing, and the load block is used for simulating the axial load of the test bearing during actual operation.
Description
Technical Field
The invention belongs to the technical field of bearing detection, and particularly relates to a double-half inner ring bearing friction torque detection device.
Background
The bearing is an essential part in modern machinery, the types of the used bearings are different according to different use occasions, and the double-half inner ring bearing is a separated bearing which can bear bidirectional axial load and generally comprises a row of outer rings, a row of rolling balls and two rows of half inner rings.
Before the double-half inner ring bearing is put into use, the related performance of the double-half inner ring bearing needs to be detected, friction torque parameters have important influence on the use of the double-half inner ring bearing, and whether the bearing is abnormal or not is directly judged according to the accuracy of friction torque measurement, so that the friction torque detection is very important for the double-half inner ring bearing.
The existing friction torque detection device usually adopts a locking clamp to lock two half inner rings when detecting, so that the two half inner rings are ensured to be in close contact with each other, the actual use scene of a double half inner ring bearing is simulated, but the existing friction torque detection device cannot rapidly replace a test bearing under the condition of keeping a certain pretightening force after detection, the pretightening force received by the two half inner rings needs to be readjusted after replacement, the whole detection efficiency is low, and the requirement of rapid measurement cannot be met.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a double-half inner ring bearing friction torque detection device which can realize the quick replacement of double-half inner rings while ensuring the consistency of pretightening force before and after the replacement, thereby achieving the purpose of high-efficiency detection.
In order to achieve the purpose, the invention adopts the technical scheme that: a friction torque detection device for a double-half inner ring bearing comprises a detection assembly and a pre-tightening assembly, wherein the detection assembly comprises a motor and a torque sensor, the detection assembly also comprises an installation cavity, the wall of the installation cavity is provided with an annular placing cavity for placing the outer ring of the test bearing, the pre-tightening assembly comprises a mandrel, a load block is arranged on the mandrel, an inner cavity with two through ends is arranged in the mandrel, a threaded rod is arranged in the inner cavity in a penetrating way, a driving structure which enables the threaded rod to move towards the direction far away from the installation cavity is also arranged in the inner cavity, the outer wall of the mandrel is provided with a stop block extending in the direction far away from the axis of the mandrel, the threaded rod is provided with a clamping piece which can clamp the two half inner rings of the test bearing together with the stop block under the action of the driving structure, the clamping piece and the threaded rod are detachably arranged, and a gap exists between the threaded rod and the installation cavity.
By adopting the scheme, the detection assembly and the pre-tightening assembly are arranged in a split mode when detection is not needed, when the test bearing needs to be replaced, the mandrel is fixed firstly, the threaded rod is stressed by the aid of the pressure applied to the threaded rod, the clamping element can move in the direction away from the stop block, the distance between the clamping element and the stop block is increased, the clamping element is conveniently detached from the threaded rod, and the test bearing is conveniently sleeved on the threaded rod or taken down from the threaded rod.
After the test bearing is replaced, the clamping piece is installed again, the threaded rod is loosened, the threaded rod drives the clamping piece to enable the clamping piece to be close to the stop block under the action of the driving structure, and the clamping piece and the stop block clamp two half inner rings of the test bearing under the action of the driving structure.
When the bearing pre-tightening device needs to be detected, the test bearing and the pre-tightening component are placed into the installation cavity together, the outer ring of the test bearing is embedded into the placement cavity and is in interference fit with the placement cavity, after the pre-tightening component is in a static state, the motor is turned on to drive the installation cavity to rotate, the torque sensor can measure the friction torque value of the test bearing, the load blocks are used for providing loads, different load blocks can be replaced or the number of the load blocks can be increased or decreased according to requirements, and therefore the axial load of the test bearing during actual operation can be simulated.
The driving structure provides stable pretightening force, so that the testing bearing is kept with certain pretightening force before and after being replaced, the pretightening force is not required to be adjusted after being replaced every time, the quick replacement of the testing bearing is realized, and the detection efficiency is improved.
As a further arrangement of the invention, the clamping member comprises a lower gasket sleeved on a threaded rod, one end of the threaded rod facing the installation cavity is provided with a limit end forming a limit with the lower gasket, the surface of the lower gasket opposite to the stop block is respectively abutted against the back-facing surfaces of the two half inner rings of the test bearing, the lower gasket is provided with a through hole for the threaded rod to penetrate through, one side of the through hole is provided with a notch extending to the outer edge of the lower gasket, and the caliber of the notch is larger than the diameter of the threaded rod.
By adopting the scheme, the diameter of the limiting end is smaller than the inner diameter of the test bearing, the lower gasket can be taken down from the threaded rod or sleeved on the threaded rod along the notch, when the test bearing needs to be replaced, the lower gasket is far away from the stop block by applying force to the threaded rod, the lower gasket can be taken down, the test bearing is conveniently separated from the threaded rod, and the replacement efficiency is improved.
As a further arrangement of the invention, the driving structure comprises a spring arranged in an inner cavity, a boss extending towards the axis of the inner cavity is arranged on the cavity opening of the inner cavity facing the installation cavity, an upper gasket is sleeved on the threaded rod and arranged on one side of the boss far away from the installation cavity, two ends of the spring are respectively abutted against the boss and the upper gasket, and a locking nut in threaded fit with the threaded rod is arranged at one end of the upper gasket far away from the spring.
By adopting the scheme, the elasticity of the spring can be adjusted by rotating the locking nut, the pretightening force applied to the test bearing can be adjusted, and the pretightening force before and after the test bearing is replaced can be ensured to be consistent.
According to the invention, the load block is annular and is sleeved on the mandrel, the load block is in clearance fit with the mandrel, and the load block is abutted against the surface opposite to the stop block.
By adopting the scheme, the load block is convenient to replace, and the load block can stably provide axial load.
As a further arrangement of the invention, one end of the threaded rod, which is far away from the stop block, is provided with a pressing cap, and the pressing cap and the threaded rod are detachably arranged.
By adopting the scheme, the pressing cap is convenient for an operator to press, and the test bearing is convenient to install or replace.
As a further arrangement of the invention, the spring is a spiral spring and is sleeved on the threaded rod.
By adopting the scheme, the elastic force can be more stably provided, the pretightening force applied to each part of the bearing to be tested is ensured to be the same, and the test result is ensured to be more accurate.
As a further arrangement of the invention, the mandrel, the threaded rod and the mounting cavity are arranged coaxially.
By adopting the scheme, the test result is more accurate.
According to the invention, the check block and the lower gasket are both in a circular ring shape, the check block, the lower gasket and the mandrel are coaxially arranged, the outer diameters of the check block and the lower gasket are consistent, and the difference between the inner diameter and the outer diameter of the check block is larger than the difference between the inner diameter and the outer diameter of one half of the half inner ring of the test bearing.
By adopting the scheme, the double-half inner ring of the bearing can be better clamped and tested, the load applied to the bearing is more even, and the detection result and the actual detection result have larger errors due to unbalanced loads received by all parts of the double-half inner ring of the bearing are prevented.
As a further arrangement of the invention, the difference between the inner diameter and the outer diameter of the cavity bottom of the placing cavity is larger than the difference between the inner diameter and the outer diameter of the outer ring of the test bearing, and the depth from the cavity opening of the placing cavity to the cavity bottom is smaller than the thickness of the test bearing.
By adopting the scheme, the outer ring is stably placed in the placing cavity, and the detection result is prevented from being influenced by undersize contact surfaces of the outer ring and the bottom of the placing cavity.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is a schematic view of a lower gasket in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of the present invention in use.
The device comprises a detection assembly 1, a motor 11, a torque sensor 12, an installation cavity 13, a placing cavity 131, a pre-tightening assembly 2, a mandrel 21, an inner cavity 211, a boss 2111, a stop 212, a load block 22, a threaded rod 23, a limiting end 231, a spring 24, an upper gasket 25, a locking nut 26, a pressing cap 27, a lower gasket 28, a through hole 281, a notch 282, a test bearing 3, an outer ring 31, a half inner ring 32, an external fixing part 4 and a pin post 41.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise specified, the orientations or positional relationships indicated in the description as terms of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Specific embodiments of the invention are shown in the drawings.
The utility model provides a two half inner circle bearing friction torque detection device, includes determine module 1 and pretension subassembly 2, determine module 1 includes motor 11 and torque sensor 12.
The detection assembly 1 further comprises a mounting cavity 13, and an annular placing cavity 131 for placing the outer ring 31 of the test bearing 3 is arranged on the wall of the mounting cavity 13.
The pre-tightening assembly 2 comprises a mandrel 21, a load block 22 is arranged on the mandrel 21, an inner cavity 211 with two through ends is arranged in the mandrel 21, a threaded rod 23 penetrates through the inner cavity 211, a spring 24 is also arranged in the inner cavity 211, a boss 2111 extending towards the axis of the inner cavity 211 is arranged at the opening of the inner cavity 211 facing the installation cavity 13, an upper gasket 25 is sleeved on the threaded rod 23, the upper gasket 25 is arranged at one side of the boss 2111 far away from the installation cavity 13, two ends of the spring 24 are respectively abutted against the boss 2111 and the upper gasket 25, a locking nut 26 in threaded fit with the threaded rod 23 is arranged at one end of the upper gasket 25 far away from the spring 24, a stop block 212 extending towards the direction far away from the axis of the mandrel 21 is arranged on the outer wall of the mandrel 21, a pressing cap 27 is arranged at one end of the threaded rod 23 far away from the stop block 212, the pressing cap 27 is detachably arranged with the threaded rod 23, a lower gasket 28 is sleeved on the threaded rod 23, a limit end 231 forming a limit with the lower gasket 28 facing the installation cavity 13, the diameter of spacing end 231 is less than the internal diameter of test bearing 3, and the face that lower gasket 28 and dog 212 are relative respectively with the face butt of two half inner circles 32 of test bearing 3 to the back, is equipped with the through-hole 281 that supplies threaded rod 23 to wear to establish on lower gasket 28, and one side of through-hole 281 is equipped with the breach 282 that extends to the outer edge of lower gasket 28, and the bore of breach 282 is greater than the diameter of threaded rod 23, has the clearance between threaded rod 23 and the installation cavity 13.
When the detection is not needed, the detection assembly 1 and the pre-tightening assembly 2 are separately placed, when the test bearing 3 needs to be replaced, the mandrel 21 is fixed firstly, then the pressing cap 27 is pressed, the threaded rod 23 can drive the limiting end 231 to move towards the direction away from the stop block 212, the distance between the lower gasket 28 and the stop block 212 is increased, the lower gasket 28 can be taken down from the threaded rod 23 or sleeved on the threaded rod 23 along the notch 282, and after the lower gasket 28 is taken down, the test bearing 3 can be quickly sleeved on the threaded rod 23 or taken down from the threaded rod 23.
After the test bearing 3 is replaced, the clamping member is installed again, the pressing cap 27 is released, the threaded rod 23 drives the lower gasket 28 to approach the stop block 212 through the limiting end 231 under the action of the spring 24, and the lower gasket 28 and the stop block 212 clamp the two half inner rings 32 of the test bearing 3 under the action of the spring 24.
By rotating the locking nut 26, the elasticity of the spring 24 can be adjusted, the pretightening force of the test bearing 3 can be adjusted, the adjustment is convenient, and the pretightening force before and after the test bearing 3 is replaced can be ensured to be consistent.
When detection is needed, the test bearing 3 and the pre-tightening component 2 are placed into the installation cavity 13, two half inner rings 32 of the test bearing 3 are in interference fit with the mandrel 21, an outer ring 31 of the test bearing 3 is embedded into the placement cavity 131 and is in interference fit with the placement cavity 131, the pre-tightening component 2 is guaranteed to be in a static state, the motor 11 is turned on to drive the installation cavity 13 to rotate, and the torque sensor 12 can detect the friction torque value of the test bearing 3. in the embodiment, the mandrel 21 is fixed through the external fixing part 4, the external fixing part 4 prevents the mandrel 21 from rotating through the pin 41 penetrating through the side wall of the mandrel 21, a gap is always formed between the pin 41 and the mandrel 21 along the axial direction of the mandrel 21, the axial stress condition of the pre-tightening component 2 is prevented from being interfered by the pin 41, when the motor 11 drives the outer ring 31 to rotate, the pre-tightening component 2 and the two half inner rings 32 are kept in the static state, and the load block 22 is used for providing load, different load blocks 22 can be replaced or the number of load blocks 22 can be increased or decreased according to requirements so as to simulate the axial load of the test bearing 3 in actual operation.
The pre-tightening assembly 2 provides stable pre-tightening force, so that the testing bearing 3 is kept with certain pre-tightening force before and after replacement, the pre-tightening force is not required to be adjusted after replacement every time, the testing bearing 3 is quickly replaced, and the detection efficiency is improved.
The load block 22 is annular and is fitted over the spindle 21, the load block 22 is in clearance fit with the spindle 21, and the load block 22 abuts against a surface of the stopper 212 facing thereto. The load block 22 is convenient to replace, and meanwhile, the load block 22 can stably provide axial load.
The spring 24 is a spiral spring 24 and is sleeved on the threaded rod 23. The elasticity can be more stably provided, the pretightening force applied to each part of the test bearing 3 is ensured to be the same, and the test result is ensured to be more accurate.
The mandrel 21, the threaded rod 23 and the mounting cavity 13 are coaxially arranged. The test result is more accurate.
The stop block 212 and the lower gasket 28 are both annular, the stop block 212, the lower gasket 28 and the mandrel 21 are coaxially arranged, the outer diameters of the stop block 212 and the lower gasket 28 are consistent, and the difference between the inner diameter and the outer diameter of the stop block 212 is larger than the difference between the inner diameter and the outer diameter of one half of the half inner ring 32 of the test bearing 3. The double-half inner ring 32 of the test bearing 3 can be better clamped, the load applied to the test bearing 3 is more even, and the large error between the detection result and the actual situation caused by the unbalanced load of each part of the double-half inner ring 32 of the test bearing 3 is prevented.
The difference of the inner and outer diameters of the bottom of the placing cavity 131 is larger than the difference of the inner and outer diameters of the outer ring 31 of the test bearing 3 by one half, and the depth from the opening of the placing cavity 131 to the bottom of the cavity is smaller than the thickness of the test bearing 3. The outer ring 31 is stably placed in the placing cavity 131, and the detection result is prevented from being influenced due to the fact that the contact surface between the outer ring 31 and the bottom of the placing cavity 131 is too small.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.
Claims (6)
1. The utility model provides a two half inner circle bearing friction torque detection device, includes determine module and pretension subassembly, determine module includes motor and torque sensor, its characterized in that: the detection assembly further comprises an installation cavity, an annular placing cavity for placing an outer ring of the test bearing is arranged on the cavity wall of the installation cavity, the pre-tightening assembly comprises a mandrel, a load block is arranged on the mandrel, an inner cavity with two through ends is arranged in the mandrel, a threaded rod penetrates through the inner cavity, a driving structure for enabling the threaded rod to move towards the direction far away from the installation cavity is further arranged in the inner cavity, a stop block extending towards the direction far away from the axis of the mandrel is arranged on the outer wall of the mandrel, a clamping piece capable of clamping two half inner rings of the test bearing together with the stop block under the action of the driving structure is arranged on the threaded rod, the clamping piece and the threaded rod are detachably arranged, a gap exists between the threaded rod and the installation cavity, the clamping piece comprises a lower gasket sleeved on the threaded rod, and a limiting end formed by the threaded rod and the lower gasket is arranged at one end, facing the installation cavity, the face that gasket and dog are relative down respectively with the face butt of two half inner circles dorsad of test bearing, be equipped with the hole of wearing to establish that supplies the threaded rod to wear to establish on the gasket down, the one side of wearing to establish the hole is equipped with the breach that extends to the outer edge of gasket down, the bore of breach is greater than the diameter of threaded rod, drive structure is including the spring that sets up in the inner chamber, the inner chamber is equipped with the boss that extends to the axis of inner chamber towards the accent of installation cavity, the cover is equipped with the gasket on the threaded rod, go up the gasket setting and keep away from one side of installation cavity at the boss, the both ends of spring respectively with boss and last gasket butt, the one end that the spring was kept away from to last gasket is equipped with the lock nut with threaded rod screw-thread fit, the load piece is cyclic annular and overlaps and establishes at the spindle clearance fit and the face butt that the load piece is relative with the dog.
2. The double-half inner ring bearing friction torque detection device according to claim 1, characterized in that: the one end that the dog was kept away from to the threaded rod is equipped with according to the press cap, according to the press cap and can dismantle the setting with the threaded rod.
3. The double-half inner ring bearing friction torque detection device according to claim 2, characterized in that: the spring is a spiral spring and is sleeved on the threaded rod.
4. The double-half inner ring bearing friction torque detection device according to claim 3, characterized in that: the mandrel, the threaded rod and the mounting cavity are coaxially arranged.
5. The double-half inner ring bearing friction torque detection device according to claim 4, characterized in that: the bearing testing device comprises a bearing, a check block, a lower gasket, a mandrel and a bearing seat, wherein the check block and the lower gasket are both in a circular ring shape, the check block, the lower gasket and the mandrel are coaxially arranged, the outer diameters of the check block and the lower gasket are consistent, and the difference between the inner diameter and the outer diameter of the check block is larger than the difference between the inner diameter and the outer diameter of a half inner ring of a testing bearing.
6. The double-half inner ring bearing friction torque detection device according to claim 5, characterized in that: the difference of the inner diameter and the outer diameter of the cavity bottom of the placing cavity is larger than the difference of the inner diameter and the outer diameter of the outer ring of the test bearing, and the depth from the cavity opening of the placing cavity to the cavity bottom is smaller than the thickness of the test bearing.
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| CN202110671374.6A CN113447177B (en) | 2021-06-17 | 2021-06-17 | Double-half inner ring bearing friction torque detection device |
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| CN202110671374.6A CN113447177B (en) | 2021-06-17 | 2021-06-17 | Double-half inner ring bearing friction torque detection device |
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| CN113447177A CN113447177A (en) | 2021-09-28 |
| CN113447177B true CN113447177B (en) | 2022-03-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114061954B (en) * | 2021-11-03 | 2024-04-19 | 人本股份有限公司 | Bearing inner diameter surface detection probe |
| CN114354039A (en) * | 2021-11-29 | 2022-04-15 | 辽沈工业集团有限公司 | Friction torque detection device |
| CN114371004A (en) * | 2021-12-27 | 2022-04-19 | 人本股份有限公司 | Novel load tool for bearing rotation precision |
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