CN112985677A - Prediction device for configuration pretightening force of tapered roller bearing - Google Patents
Prediction device for configuration pretightening force of tapered roller bearing Download PDFInfo
- Publication number
- CN112985677A CN112985677A CN202110160357.6A CN202110160357A CN112985677A CN 112985677 A CN112985677 A CN 112985677A CN 202110160357 A CN202110160357 A CN 202110160357A CN 112985677 A CN112985677 A CN 112985677A
- Authority
- CN
- China
- Prior art keywords
- bearing
- mandrel
- tapered roller
- roller bearing
- locking nut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2229/00—Setting preload
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
Abstract
The invention relates to the technical field of bearings, and particularly discloses a prediction device for a tapered roller bearing when a pre-tightening force is configured, which comprises a bearing tool, wherein the bearing tool comprises a mandrel for mounting a bearing to be tested and a shell matched with an outer ring of the bearing to be tested, the mandrel is provided with two bearing mounting stations, one end of the mandrel is connected with a locking nut, the other end of the mandrel is connected with a motor, a torque sensor is arranged between the mandrel and the motor, the shell is provided with a temperature measuring hole, and the temperature measuring hole is provided with a temperature sensor. By adopting the structure, the device for detecting the configuration pretightening force of the tapered roller bearing is provided, and is used for detecting the pretightening load influenced by factors such as installation fit, rigidity of a shaft and a shell, temperature and the like in practical application, and further detecting the influence caused by lubricating oil, flow of the lubricating oil, temperature rise of a shaft system and the coupling effect of the temperature rise and the pretightening load in the running process of the bearing.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a prediction device for a tapered roller bearing when pre-tightening force is configured.
Background
When the tapered roller bearing is used as a split bearing in a pair in an axle, the tapered roller bearing needs to be axially pre-tightened. In the axle, the conical roller bearing is pre-tightened mainly by a gasket and locked by a lock nut, and a bearing supplier generally provides the pre-tightening amount of the bearing according to experience. A test tool is designed for face-to-face tapered roller bearing configuration or back-to-back tapered roller bearing configuration, and a test method for various factors influencing bearing configuration pre-tightening is provided.
The bearing pretightening force is an important parameter for determining the bearing capacity and the running quality of the bearing. The pretightening force of the tapered roller bearing influences the rigidity, the service life and the working reliability of a bearing system. When a practical bearing manufacturer recommends a pre-tightening load for a customer, many pre-tightening loads are recommended according to past experience or rough estimation, the influence of factors such as installation fit, rigidity of a shaft and a shell, temperature and the like on the pre-tightening loads is not considered, and the influence of lubricating grease and filling quantity thereof or lubricating oil and flow thereof, shaft system sealing on shaft system temperature rise and the coupling effect of the temperature rise and the pre-tightening loads cannot be considered in the bearing operation process. The influences of the matching, the temperature, the lubrication, the rigidity of the shaft and the shell and the like on the pretightening force are considered, and the direct influences are the friction torque and the temperature rise of the bearing.
The tapered roller bearings are all designed to be of an open structure, and the lubricating oil of the bearings at the front end and the rear end in the vehicle differential is fully used. The lubricating oil in the bearing generates larger energy loss due to the stirring action with the retainer and the rolling body, and generates larger friction torque.
During bearing operation, the inner ring temperature is typically 5 to 15 degrees celsius higher than the outer ring. This results in a change in the play of the bearing. For tapered roller bearings, the difference in temperature between the inner and outer races and the difference in the coefficient of thermal expansion of the material of the shaft engaging the inner race and the housing engaging the outer race can result in high variations in their assembly, thereby affecting the preload or axial play of the bearing. It is necessary to use a convenient and reliable device to research various factors influencing the pre-tightening change of the tapered roller bearing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a tapered roller bearing configuration pretightening force detection device which is used for detecting the pretightening load influenced by factors such as installation fit, rigidity of a shaft and a shell, temperature and the like in practical application, and further detecting the lubricating oil and the flow thereof in the running process of the bearing, the influence caused by temperature rise of a shaft system and the coupling action of the temperature rise and the pretightening load.
In order to achieve the purpose, the invention adopts the technical scheme that: a prediction device for a tapered roller bearing when pre-tightening force is configured comprises a bearing tool, wherein the bearing tool comprises a mandrel and a shell, the mandrel is used for mounting a bearing to be tested, the shell is matched with an outer ring of the bearing to be tested, the mandrel is provided with two bearing mounting stations, one end of the mandrel is connected with a locking nut, the other end of the mandrel is connected with a motor, the motor is connected with the mandrel through a connecting shaft, the mandrel is provided with a connecting hole, the connecting shaft is embedded into the connecting hole, the inner wall of the connecting hole is provided with a guide groove, an ejector rod is arranged in the guide groove, a spring for driving the ejector rod to abut against the connecting shaft is arranged between the ejector rod and the bottom surface of the guide groove, the outer peripheral surface of the connecting shaft is provided with a clamping groove, the end part of the ejector rod is embedded into, the temperature measuring device is characterized in that a temperature measuring hole is formed in the shell, and a temperature sensor is arranged on the temperature measuring hole.
Among the above-mentioned technical scheme, the lubricating oil that uses the bearing of front end and rear end in vehicle differential is very abundant, and the inside lubricating oil of bearing has produced great energy loss owing to take place the stirring effect with holder, rolling element, produces great friction torque, and this testing arrangement can detect different bearing structural design and to the friction torque influence, connects torque sensor on the connecting axle, and end connection motor, torque sensor can detect bearing friction torque under different pretightning forces.
According to the invention, the outer peripheral surface of the end part of the mandrel, which is provided with the locking nut, is provided with an annular groove, the annular groove corresponds to one bearing mounting station, a bushing is sleeved on the annular groove, the locking nut is T-shaped, the outer diameter of the head of the locking nut is larger than the inner diameter of the annular groove, and the outer edge of the locking nut can be abutted against the bushing.
Among the above-mentioned technical scheme, lock nut is used for providing the required pretightning force of bearing that awaits measuring, and lock nut screws up with torque wrench, can directly read the pretightning force, and the bush is located between the inner circle and the dabber of one of them bearing that awaits measuring for exert the pretightning force, simple structure.
As a further arrangement of the invention, the mandrel is sleeved with a spacing sleeve positioned between two bearing installation stations.
Among the above-mentioned technical scheme, the spacer sleeve can be used to separate two bearings that await measuring, respectively with the inner circle butt of two bearings that await measuring, still can exert the pretightning force simultaneously, the simulation reality in service behavior, simple structure, rationally distributed.
As a further arrangement of the invention, one end of the mandrel is provided with a threaded hole for the tail end of the locking nut to be in threaded connection, and the other end of the mandrel is provided with the connecting hole.
Among the above-mentioned technical scheme, the connecting hole is the same with the central line of screw hole, reduces the error.
As a further arrangement of the invention, the number of the temperature measuring holes is two, and the two temperature measuring holes respectively correspond to the two bearing installation stations.
In the technical scheme, the temperature of the two bearings to be detected is respectively detected, and the working efficiency is improved.
As a further arrangement of the invention, the housing is provided with an oil filling port which is located between the two bearing mounting stations.
Among the above-mentioned technical scheme, be equipped with oiling mouth and temperature sensor on the casing, can pour into lubricated oil mass into as required, bearing friction torque when the detectable is at different oiling volumes during the bearing operation, temperature sensor detectable bearing operation in-process temperature rise, preferred oiling mouth and temperature measurement hole are located same straight line.
As a further arrangement of the invention, a cover shell is arranged outside the shell, and one side of the cover shell corresponding to the locking nut is detachably arranged.
Among the above-mentioned technical scheme, the setting of housing is not only convenient for install fixed, can also avoid lubricating oil to splash everywhere, keeps device clean and tidy, the clearance of being convenient for.
As a further arrangement of the invention, one side of the cover shell corresponding to the temperature measuring hole and the oil filling port is provided with an opening, and the opening is connected with a push-pull plate.
Among the above-mentioned technical scheme, uncovered setting is convenient for oiling and installation, convenient operation.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a structural cross-sectional view of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bearing fixture according to an embodiment of the present invention.
Detailed Description
The specific embodiment of the invention is shown in fig. 1-3, and the device for predicting the configuration pre-tightening force of the tapered roller bearing comprises a bearing tool 1, wherein the bearing tool 1 comprises a mandrel 11 for mounting a bearing 2 to be tested and a shell 12 matched with an outer ring of the bearing 2 to be tested, two bearing mounting stations 13 are arranged on the mandrel 11, one end of the mandrel 11 is connected with a lock nut 111, the other end of the mandrel 11 is connected with a motor 112, the motor 112 is connected with the mandrel 11 through a connecting shaft 117, the mandrel 11 is provided with a connecting hole 116 for embedding the connecting shaft 117, the inner wall of the connecting hole 116 is provided with a guide groove 1161, a push rod 1162 is arranged in the guide groove 1161, a spring 1163 for driving the push rod 1162 to abut against the connecting shaft 117 is arranged between the push rod 1162 and the bottom surface of the guide groove 1161, a clamping groove 1171 for embedding the end of the, the end of the top rod 1162 facing the motor 112 is an inclined surface, the inclined surface is arranged to facilitate sliding of the connecting shaft 117, so that the top rod 1162 is aligned with the clamping groove 1171 and is embedded into the clamping groove 1171 to form clamping linkage fit, driving of the motor 112 is not delayed, transmission efficiency is high, the torque sensor 3 is arranged between the mandrel 11 and the motor 112, the torque sensor 3 is arranged on the connecting shaft 117, the torque sensor 3 is arranged between the mandrel 11 and the motor 112, the temperature measuring hole 121 is formed in the shell 12, and the temperature sensor is arranged on the temperature measuring hole 121. The lubricating oil of the front end and the rear end of the bearing used in the vehicle differential is very sufficient, the lubricating oil in the bearing generates large energy loss due to the stirring effect with the retainer and the rolling body, and generates large friction torque, the testing device can detect the influence of different bearing structural designs on the friction torque, the connecting shaft 117 is connected with the spline hole 116 through a spline, the torque sensor 3 is connected onto the connecting shaft 117, the end part is connected with the motor 112, and the torque sensor 3 can detect the bearing friction torque under different pretightening forces.
The end of the mandrel 11 having the lock nut 111 has an annular groove 113 on its outer circumference, the annular groove 113 corresponds to one of the bearing installation stations 13, a bushing 114 is sleeved on the annular groove 113, the lock nut 111 is T-shaped, the outer diameter of the head 1111 of the lock nut 111 is larger than the inner diameter of the annular groove 113, and the outer edge of the head 1111 of the lock nut 111 can abut against the bushing 114. The lock nut 111 is used for providing the pre-tightening force required by the bearing 2 to be tested, the lock nut 111 is screwed by a torque wrench, the pre-tightening force can be directly read, and the bushing 114 is located between the inner ring of one of the bearings 2 to be tested and the mandrel 11 and used for applying the pre-tightening force, so that the structure is simple.
The mandrel 11 is sleeved with a spacing sleeve 14 positioned between two bearing mounting stations 13. Spacer sleeve 14 can be used to separate two bearings 2 that await measuring, respectively with two bearings 2's that await measuring inner circle butt, still can exert the pretightning force simultaneously, the simulation reality in service behavior, simple structure, rationally distributed.
One end of the mandrel 11 is provided with a threaded hole 115 for the tail end 1112 of the locking nut 111 to be screwed, and the other end is provided with the connecting hole 116. The connecting shaft 117 is connected with the spline hole 116 through a spline, the torque sensor 3 is connected to the connecting shaft 117, the end part of the connecting shaft is connected with the motor 112, and the torque sensor 3 can detect the friction torque of the bearing under different pretightening forces.
The two temperature measuring holes 121 correspond to the two bearing mounting stations 13 respectively. The temperature of the two bearings 2 to be detected is detected respectively, and the working efficiency is improved.
The housing 12 is provided with an oil filling opening 122, and the oil filling opening 122 is located between the two bearing mounting stations 13. Be equipped with oiling mouth 122 and temperature sensor on casing 12, can pour into the lubricated oil mass into as required, bearing friction torque when the detectable is at different oiling volumes during bearing operation, temperature sensor detectable bearing operation in-process temperature rise, preferred oiling mouth 122 and temperature measurement hole 121 lie in same straight line.
The housing 4 is installed outside the housing 12, and one side of the housing 4 corresponding to the lock nut 111 is detachably disposed. The housing 4 is convenient to install and fix, lubricating oil can be prevented from splashing everywhere, and the device is kept clean and convenient to clean.
One side of the cover shell 4 corresponding to the temperature measuring hole 121 and the oil filling opening 122 is provided with an opening, and the opening is connected with a push-pull plate 41. The open setting is convenient for oiling and installation, convenient operation.
The structure has the characteristics of convenient disassembly and simple and compact structure. The test procedure was as follows:
1. installing a bearing to be tested into a bearing tool;
2. setting a preload of a bearing to be tested, and locking the bearing to be tested by using a torque wrench according to requirements;
3. adjusting the concentricity of the motor and the spline hole, and connecting the torque sensor;
4. inserting a thermocouple temperature sensor;
5. setting the rotating speed of a motor;
6. starting to record torque and temperature;
7. different preload or axial play can be set according to needs, and the steps are repeated to detect the bearing torque and temperature change conditions.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
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 (8)
1. A prediction device when tapered roller bearing configuration pretightning force which characterized in that: the bearing device comprises a bearing tool, the bearing tool comprises a mandrel and a shell, the mandrel is used for mounting a bearing to be tested, the shell is matched with the outer ring of the bearing to be tested, the mandrel is provided with two bearing mounting stations, one end of the mandrel is connected with a locking nut, the other end of the mandrel is connected with a motor, the motor is connected with the mandrel through a connecting shaft, the mandrel is provided with a connecting hole for embedding the connecting shaft, the inner wall of the connecting hole is provided with a guide groove, an ejector rod is arranged in the guide groove, a spring for driving the ejector rod to abut against the connecting shaft is arranged between the ejector rod and the bottom surface of the guide groove, the outer peripheral surface of the connecting shaft is provided with a clamping groove for embedding the end part of the ejector rod, the end part of the ejector rod facing the motor is an inclined surface, and a temperature sensor is arranged on the temperature measuring hole.
2. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 1, wherein: the outer peripheral surface of the end part of the mandrel, which is provided with a locking nut, is provided with an annular groove, the annular groove corresponds to one of the bearing installation stations, a bushing is sleeved on the annular groove, the locking nut is T-shaped, the outer diameter of the head of the locking nut is larger than the inner diameter of the annular groove, and the outer edge of the locking nut can be abutted against the bushing.
3. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 1 or 2, wherein: and the mandrel is sleeved with a spacing sleeve positioned between the two bearing installation stations.
4. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 3, wherein: one end of the core shaft is provided with a threaded hole for the tail end of the locking nut to be in threaded connection, and the other end of the core shaft is provided with the connecting hole.
5. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 1, 2, or 4, wherein: the two temperature measuring holes are respectively corresponding to the two bearing mounting stations.
6. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 5, wherein: an oil filling port is arranged on the shell and is positioned between the two bearing installation stations.
7. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 1, 2, 4, or 6, wherein: the shell is externally provided with a housing, and one side of the housing corresponding to the locking nut is detachably arranged.
8. The apparatus for predicting when a pre-load is applied to a tapered roller bearing according to claim 7, wherein: one side of the housing, which corresponds to the temperature measuring hole and the oil filling port, is provided with an opening, and a push-pull plate is connected to the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160357.6A CN112985677A (en) | 2021-02-05 | 2021-02-05 | Prediction device for configuration pretightening force of tapered roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110160357.6A CN112985677A (en) | 2021-02-05 | 2021-02-05 | Prediction device for configuration pretightening force of tapered roller bearing |
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| Publication Number | Publication Date |
|---|---|
| CN112985677A true CN112985677A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110160357.6A Pending CN112985677A (en) | 2021-02-05 | 2021-02-05 | Prediction device for configuration pretightening force of tapered roller bearing |
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| CN (1) | CN112985677A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804440A (en) * | 2021-08-16 | 2021-12-17 | 人本股份有限公司 | Test device for testing friction torque of oil bath lubrication bearing |
| CN116336089A (en) * | 2023-03-21 | 2023-06-27 | 高唐县金象汽车部件有限公司 | Automatic assembly equipment for tapered roller bearing |
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| US9726963B1 (en) * | 2016-08-12 | 2017-08-08 | Zhongshan Dashan Photographic Equipment Co., Ltd. | Quick connection structure |
| CN211148035U (en) * | 2019-12-10 | 2020-07-31 | 人本集团有限公司 | Pre-tightening force detection device applied to conical roller bearing in vehicle differential |
| CN211145032U (en) * | 2019-12-26 | 2020-07-31 | 西安智同航空科技有限公司 | Push type quick-release pin |
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2021
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| CN201395989Y (en) * | 2009-04-26 | 2010-02-03 | 徐钜祥 | Back locking mechanism of door lock |
| CN202391902U (en) * | 2011-12-06 | 2012-08-22 | 宝鸡石油机械有限责任公司 | Self-lock pin shaft |
| CN104034528A (en) * | 2014-05-20 | 2014-09-10 | 钱潮轴承有限公司 | Bearing temperature rising and friction moment tester and test method |
| CN104895317A (en) * | 2015-05-15 | 2015-09-09 | 无锡阳工机械制造有限公司 | Square disc quick installation scaffold |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113804440A (en) * | 2021-08-16 | 2021-12-17 | 人本股份有限公司 | Test device for testing friction torque of oil bath lubrication bearing |
| CN116336089A (en) * | 2023-03-21 | 2023-06-27 | 高唐县金象汽车部件有限公司 | Automatic assembly equipment for tapered roller bearing |
| CN116336089B (en) * | 2023-03-21 | 2023-10-03 | 高唐县金象汽车部件有限公司 | Automatic assembly equipment for tapered roller bearing |
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Application publication date: 20210618 |
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