CN115235761A - Test bench for verifying gear train strength of differential assembly and verification method - Google Patents
Test bench for verifying gear train strength of differential assembly and verification method Download PDFInfo
- Publication number
- CN115235761A CN115235761A CN202210859288.2A CN202210859288A CN115235761A CN 115235761 A CN115235761 A CN 115235761A CN 202210859288 A CN202210859288 A CN 202210859288A CN 115235761 A CN115235761 A CN 115235761A
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- differential assembly
- supporting
- fixing
- strength
- gear train
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a test bed for verifying the strength of a gear train of a differential assembly and a verification method, and belongs to the technical field of design and manufacture of automobile chassis production test process equipment. The test bench for verifying the gear train strength of the differential assembly and the verifying method can verify the static strength and the bending fatigue strength of the planetary gear, the side gear and the planetary gear shaft of the differential assembly. The test bench comprises a base, a supporting and fixing component and a loading driving component, wherein the supporting and fixing component is arranged on the base, and a differential assembly needing strength verification passes through the base fixed by the supporting and fixing component. The method comprises the steps of firstly fixedly mounting the differential assembly and the half axle on a test bed, then inputting a verification torque to the differential assembly through an actuator under the coordination of a loading arm lever, and finally detecting the damage condition of a gear train of the differential assembly to verify the strength of the differential assembly.
Description
Technical Field
The invention relates to a test bench, in particular to a test bench for verifying the strength of a gear train of a differential mechanism assembly, and belongs to the technical field of design and manufacture of technological equipment for automobile chassis production tests. The invention further relates to a verification method for verifying the strength of the gear train of the differential assembly by adopting the test bed.
Background
The main speed reducer of the rear drive axle is an important component of an automobile transmission system, and the differential assembly in the main speed reducer has the functions of installing a driven gear and transmitting load input by the driven gear to a half axle and a vehicle end through a differential shell, a planetary gear shaft, a planetary gear and a half axle gear. And meanwhile, when the rotating speeds of the wheels on the two sides are inconsistent, the differential assembly provides a differential function to ensure the normal operation to be stable. At present, the test method and the test standard of the differential planet gear, the half axle gear and the planet gear shaft are not specified by the industry and national standards. And the static strength and the bending fatigue strength of the differential planetary gear, the side gear and the planetary gear shaft cannot be rapidly verified by the conventional gear fatigue and differential fatigue test.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided are a test bench for verifying the gear train strength of a differential assembly, which can verify the static strength and the bending fatigue strength of a planetary gear, a side gear and a planetary gear shaft of the differential assembly, and a verification method for verifying the gear train strength of the differential assembly by using the test bench.
The technical scheme adopted for solving the technical problems is as follows: a test bench for verifying the strength of a gear train of a differential assembly comprises a base, a supporting and fixing component and a loading driving component, wherein the supporting and fixing component is arranged on the base, and the differential assembly needing to be verified in strength is fixed on the base through the supporting and fixing component; in the process of verifying the strength of the gear train, the differential assembly verifies the strength of the gear train of the differential assembly by loading the load input by the driving component.
Further, the base is composed of a base plate, a position adjusting guide groove is formed in the base plate, and the supporting and fixing component and the loading driving component are arranged on the base plate in a position-adjustable mode through the position adjusting guide groove.
The supporting and fixing component comprises a differential assembly supporting and fixing system and a half shaft supporting and fixing system, the differential assembly supporting and fixing system is fixedly arranged in the middle of a base plate, the half shaft supporting and fixing system is arranged at one end of the base plate in a position-adjustable mode along the length direction through a position adjusting guide groove, the differential assembly is detachably and fixedly arranged on the base plate through the differential assembly supporting and fixing system, the half shaft at one end of the differential assembly is movably supported on the half shaft supporting and fixing system through a bearing of the half shaft, and verification torque is transmitted to the differential assembly through the loading driving component along the half shaft at the other end.
Furthermore, the differential assembly supporting and fixing system comprises a set of differential assembly fixing clamps, and the differential assembly fixing clamps are detachably and fixedly arranged in the middle of the base plate.
In a preferred mode of the above scheme, the axle shaft supporting and fixing system includes at least two sets of bearing fixing and supporting clamps, each set of the bearing fixing and supporting clamps is coaxially arranged at one end of the base plate along the length direction with the differential assembly through the position adjusting guide groove, and the ends of the axle shafts which are not connected with the differential assembly are movably arranged on the base plate through the bearing fixing and supporting clamps of each set respectively and simultaneously.
Furthermore, the loading driving component comprises a supporting fixed member group and a driving loading member group, the driving loading member group is movably arranged on the supporting fixed member group, the free end of the half shaft connected with the differential mechanism assembly from the other end is rotatably supported on the supporting fixed member group around the axis of the half shaft through the supporting fixed member group, and the verification torque is transmitted to the differential mechanism assembly from the free end of the half shaft through the driving loading member group.
In a preferred mode of the above aspect, the support fixing member set includes a set of drive bearing fixing clips, the drive loading member set is disposed on the drive bearing fixing clips, and the drive bearing fixing clips are disposed on the other end of the base plate in a position-adjustable manner along the length direction through position-adjusting guide grooves.
Further, the drive loading group include actuator, load sensor, loading arm and mounting bracket, load sensor arrange on the power take off of actuator, loading arm with the actuator pass through the mounting bracket arrange the drive bearing fixation clamp on, the verification moment of torsion that the actuator was exported passes through the mounting bracket transmit the semi-axis of the other end under the cooperation of loading arm.
The construction method comprises the steps of firstly, fixedly mounting the differential assembly on a test bed through a differential assembly supporting and fixing system, a half shaft supporting and fixing system and a driving bearing fixing clamp, then inputting a verification torque to the differential assembly from a half shaft at one end of the driving bearing fixing clamp under the matching of a loading arm rod through an actuator, controlling the input torque to be within the range of 0.1-1.2M under the matching of a load sensor, and finally verifying the strength of a gear train of the differential assembly through detecting the damage conditions of a half shaft gear, a planetary gear and a gear shaft of the differential assembly.
The beneficial effects of the invention are: according to the technical scheme, the test bed comprises a base, a supporting and fixing component and a loading driving component, the supporting and fixing component is arranged on the base, then the differential assembly needing strength verification passes through the base fixed by the supporting and fixing component, and in the process of verifying the strength of the gear train, the differential assembly verifies the strength of the gear train of the differential assembly through the load input by the loading driving component; therefore, when the gear train of the differential assembly is tested and verified, the differential assembly can be fixedly arranged on a test bench through the differential assembly supporting and fixing system, the half shaft supporting and fixing system and the driving bearing fixing clamp, then verification torque is input to the differential assembly from the half shaft at one end of the driving bearing fixing clamp under the matching of the loading arm rod through the actuator, the input torque is controlled within the range of 0.1-1.2M under the matching of the load sensor, and finally the strength of the gear train assembly of the differential assembly is verified through detecting the damage conditions of the half shaft gear, the planetary gear and the gear shaft of the differential assembly. Both solved the fatigue of conventional gear among the prior art and differential mechanism fatigue test can not be quick verify differential mechanism planetary gear, side gear and planetary gear axle static strength and the technical problem of bending fatigue strength, adopt the test bench that this application provided simultaneously can also carry out effectual verification through the experiment to the intensity of the gear train of differential mechanism assembly.
Drawings
FIG. 1 is a schematic three-dimensional structure diagram of a test stand for verifying gear train strength of a differential assembly according to the present invention.
Labeled in the figure as: the device comprises a base 1, a supporting and fixing component 2, a loading driving component 3, a differential assembly 4, a position adjusting guide groove 5, a differential assembly supporting and fixing system 6, a half shaft supporting and fixing system 7, a half shaft 8, a bearing fixing and supporting clamp 9, a supporting and fixing component group 10, a driving and loading component group 11, an actuator 12, a load sensor 13, a loading force arm 14 and a mounting frame 15.
Detailed Description
FIG. 1 shows a test bench for verifying the gear train strength of a differential assembly, which can verify the static strength and the bending fatigue strength of a planetary gear, a side gear and a planetary gear shaft of the differential assembly, and a verification method for verifying the gear train strength of the differential assembly by using the test bench. The test bench comprises a base 1, a supporting and fixing component 2 and a loading driving component 3, wherein the supporting and fixing component 2 is arranged on the base 1, and a differential assembly 4 needing strength verification is fixed on the base 1 through the supporting and fixing component 2; in the process of verifying the strength of the gear train, the differential assembly 4 verifies the strength of the gear train of the differential assembly 4 by loading the load input by the driving component 3. According to the technical scheme, the test bed comprises a base, a supporting and fixing component and a loading driving component, the supporting and fixing component is arranged on the base, then the differential assembly needing strength verification passes through the base fixed by the supporting and fixing component, and in the process of verifying the strength of the gear train, the differential assembly verifies the strength of the gear train of the differential assembly through the load input by the loading driving component; therefore, when the gear train of the differential assembly is tested and verified, the differential assembly can be fixedly arranged on a test bench through the differential assembly supporting and fixing system, the half shaft supporting and fixing system and the driving bearing fixing clamp, then verification torque is input into the differential assembly from the half shaft at one end of the driving bearing fixing clamp under the matching of the loading arm rod through the actuator, the input torque is controlled within the range of 0.1-1.2M under the matching of the load sensor, and finally the strength of the gear train of the differential assembly is verified through detecting the damage conditions of the half shaft gear, the planetary gear and the gear shaft of the differential assembly. Both solved the fatigue of conventional gear among the prior art and differential mechanism fatigue test can not be quick verify differential mechanism planetary gear, side gear and planetary gear axle static strength and the technical problem of bending fatigue strength, adopt the test bench that this application provided simultaneously can also carry out effectual verification through the experiment to the intensity of the gear train of differential mechanism assembly.
In the above embodiment, based on the experience of the existing process equipment, in combination with the practical situation of the present application, the base 1 of the present application is composed of a base plate, a position adjusting guide groove 5 is provided on the base plate, and the support fixing component 2 and the loading driving component 3 are adjustably arranged on the base plate through the position adjusting guide groove 5. Correspondingly, in order to fix the differential assembly 4 and the half shaft, the structure of each component of the present application can be simplified, the supporting and fixing component 2 comprises a differential assembly supporting and fixing system 6 and a half shaft supporting and fixing system 7, the differential assembly supporting and fixing system 6 is fixedly arranged in the middle of the base plate, the half shaft supporting and fixing system 7 is arranged at one end of the base plate in a position-adjustable manner along the length direction through a position adjusting guide groove 5, the differential assembly 4 is detachably and fixedly arranged on the base plate through the differential assembly supporting and fixing system 6, the half shaft 8 at one end of the differential assembly is movably supported on the half shaft supporting and fixing system 7 through a bearing, and the verification torque is transmitted to the differential assembly 4 through the loading driving component 3 along the half shaft 8 at the other end. In this case, the differential assembly support fastening system 6 is preferably a set of differential assembly fixing clips detachably fixed to the middle portion of the base plate. The half-shaft support fixing system 7 preferably comprises at least two sets of bearing fixing support clamps 9 according to actual conditions, each set of the bearing fixing support clamps 9 is coaxially arranged at one end of the base plate along the length direction of the differential assembly 4 through the position adjusting guide groove 5, and one end of the half shaft 8 which is not connected with the differential assembly 4 is movably arranged on the base plate through each set of the bearing fixing support clamps 9.
Further, in order to facilitate the verification of the application of load and the control, the loading actuator assembly 3 described herein includes a supporting anchor group 10 and a driving anchor group 11, the driving anchor group 11 is movably disposed on the supporting anchor group 10, the free end of the axle shaft 8 connected to the differential assembly 4 from the other end is rotatably supported on the supporting anchor group 10 about its own axis through the supporting anchor group 10, and the verification torque is transmitted to the differential assembly from the free end of the axle shaft 8 through the driving anchor group 11. At this time, the supporting fixture group 10 includes a group of driving bearing fixing clips, and the driving loader group 10 is disposed on the driving bearing fixing clips, and the driving bearing fixing clips are disposed on the other end of the base plate in a position adjustable manner in the length direction through the position adjusting guide grooves 5. The driving loading group 11 comprises an actuator 12, a load sensor 13, a loading arm 14 and a mounting frame 15, wherein the load sensor 13 is arranged at the power output end of the actuator 12, the loading arm 14 and the actuator 12 are arranged on the driving bearing fixing clamp through the mounting frame 15, and the verification torque output by the actuator 12 is transmitted to the half shaft 8 at the other end through the mounting frame 15 under the matching of the loading arm 14.
To sum up, the test bench that this application provided can verify differential mechanism assembly in the static strength of side gear, planetary gear and planetary gear axle and fatigue life, this test bench simple structure can be according to the different loading modes of self resource combination simultaneously, and the test method can effectively verify differential mechanism assembly in the life-span and the intensity of side gear, planetary gear and gear axle.
It should be noted that the actuator of the present application is connected to an external bracket through the rear portion of the actuator, so that the actuator of the present application is used as a load input portion, the corresponding differential is connected to the clamp 2 through a bolt, the bearing seat is connected to the clamp through a bolt, and the specific connection mode is determined according to the structure of the half shaft. Meanwhile, the technical problem to be solved by the application is mainly to carry out a differential fatigue test on the differential assembly independently of the drive axle assembly, the test method is simple, the efficiency is improved, and the disadvantage that the test cannot be carried out due to damage to the hand piece in the assembly test can be solved.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention relates to the field of bench test methods and equipment for planetary gears, half-axle gears and planetary gear shafts in an automobile differential assembly, in particular to a bench test device and a bench test method which can simulate the stress condition of the planetary gears, the half-axle gears and the planetary gear shafts in the differential assembly under the differential working condition and quickly verify the static strength and the fatigue life of the planetary gears, the half-axle gears and the planetary gear shafts in the differential assembly under the differential working condition, wherein the bench test device comprises a differential assembly fixed mounting device; the device comprises a differential mechanism two-end output assembly, a half-shaft bearing fixing device, a loading arm lever, a half-shaft fixing device, a fixing platform, a linear actuator and other auxiliary devices.
The differential assembly is fixed on a test bed, half shafts on two sides are inserted into the differential assembly according to a loading state, the half shaft on one side is fixed, torque is continuously applied to the half shaft on the other side until a zero part in the differential assembly is broken, and then a static torque strength result of the differential assembly is verified; the torque applied to one side half shaft is 0.1-1.2M (M is half of the output torque borne by the platform differential).
Example one
The differential assembly is arranged on the differential assembly fixing clamp, and the whole vehicle half shaft assembly (including a bearing) is connected with the differential assembly; and the bearing on the half shaft is fixedly connected with the bearing mounting seat. Ensuring that the half shafts on the two sides are connected coaxially with the differential assembly; the loading arm lever is connected with the half shaft at one side, and the half shaft at the other side is fixed. The actuator is connected with the loading force arm through a test tool, and the load sensor tests the load in the test process.
The method comprises the following steps: the half axle gears, the planetary gears and the planetary gear shafts in the half axle and differential assembly are applied with torque through the actuators, and the torque is monitored through the force sensors. The actual load is ensured to be 0.1-1.2M.
Claims (9)
1. A test bench for differential mechanism assembly gear train intensity is verified, its characterized in that: the test bench comprises a base (1), a supporting and fixing component (2) and a loading driving component (3), wherein the supporting and fixing component (2) is arranged on the base (1), and a differential assembly (4) needing strength verification is arranged on the base (1) fixed by the supporting and fixing component (2); in the process of verifying the strength of the gear train, the differential assembly (4) verifies the strength of the gear train of the differential assembly (4) through loading the load input by the driving component (3).
2. The test rig for gear train strength verification of a differential assembly according to claim 1, wherein: the base (1) is composed of a base plate, a position adjusting guide groove (5) is formed in the base plate, and the supporting and fixing component (2) and the loading driving component (3) are arranged on the base plate in a position-adjustable mode through the position adjusting guide groove (5).
3. The test rig for gear train strength validation of a differential assembly according to claim 1 or 2, wherein: the supporting and fixing component (2) comprises a differential assembly supporting and fixing system (6) and a half shaft supporting and fixing system (7), the differential assembly supporting and fixing system (6) is fixedly arranged in the middle of a base plate, the half shaft supporting and fixing system (7) is arranged at one end of the base plate in a position-adjustable mode along the length direction through a position adjusting guide groove (5), the differential assembly (4) is detachably and fixedly arranged on the base plate through the differential assembly supporting and fixing system (6), a half shaft (8) at one end of the differential assembly is movably supported on the half shaft supporting and fixing system (7) through a bearing, and verification torque is transmitted to the differential assembly (4) through the loading driving component (3) along the half shaft (8) at the other end.
4. The test rig for gear train strength validation of a differential assembly of claim 3, wherein: the differential assembly supporting and fixing system (6) comprises a set of differential assembly fixing clamps, and the differential assembly fixing clamps are detachably and fixedly arranged in the middle of the base plate.
5. The test rig for gear train strength validation of a differential assembly of claim 4, wherein: the half shaft supporting and fixing system (7) comprises at least two groups of bearing fixing and supporting clamps (9), each group of bearing fixing and supporting clamps (9) are coaxially arranged at one end of a base plate along the length direction of the differential assembly (4) through a position adjusting guide groove (5), and one ends, which are not connected with the differential assembly (4), of the half shafts (8) are movably arranged on the base plate through the bearing fixing and supporting clamps (9) respectively and simultaneously.
6. The test rig for gear train strength verification of a differential assembly of claim 5, wherein: the loading driving component (3) comprises a supporting fixed set (10) and a driving loading set (11), the driving loading set (11) is movably arranged on the supporting fixed set (10), the free end of a half shaft (8) which is connected with the differential assembly (4) from the other end is rotatably supported on the supporting fixed set (10) around the axis of the free end through the supporting fixed set (10), and the verification torque is transmitted to the differential assembly from the free end of the half shaft (8) through the driving loading set (11).
7. The test rig for gear train strength verification of a differential assembly according to claim 6, wherein: the supporting and fixing piece group (10) comprises a group of driving bearing fixing clamps, the driving loading piece group (10) is arranged on the driving bearing fixing clamps, and the driving bearing fixing clamps are arranged at the other end of the base plate in a position-adjustable mode along the length direction through position adjusting guide grooves (5).
8. The test rig for gear train strength validation of a differential assembly of claim 7, wherein: drive loading group (11) include actuator (12), load sensor (13), loading arm of force pole (14) and mounting bracket (15), load sensor (13) arrange on the power take off of actuator (12), loading arm of force pole (14) with actuator (12) pass through mounting bracket (15) arrange drive bearing fixation clamp on, the verification moment of torsion that actuator (12) were exported passes through mounting bracket (15) transmit half axle (8) to the other end under the cooperation of loading arm of force pole (14).
9. A method of verifying gear train strength in a differential assembly using the test rig of claim 8, wherein: the method comprises the steps of firstly, fixedly mounting a differential assembly (4) on a test bench through a differential assembly supporting and fixing system (6), a half shaft supporting and fixing system (7) and a driving bearing fixing clamp, then inputting a verification torque to the differential assembly (4) from a half shaft (8) at one end of the driving bearing fixing clamp under the coordination of a loading arm lever (14) through an actuator (12), controlling the input torque to be within the range of 0.1-1.2M under the coordination of a load sensor (13), and finally verifying the strength of a gear train of the differential assembly through detecting the damage conditions of a half shaft gear, a planetary gear and a gear shaft of the differential assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859288.2A CN115235761A (en) | 2022-07-20 | 2022-07-20 | Test bench for verifying gear train strength of differential assembly and verification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859288.2A CN115235761A (en) | 2022-07-20 | 2022-07-20 | Test bench for verifying gear train strength of differential assembly and verification method |
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| Publication Number | Publication Date |
|---|---|
| CN115235761A true CN115235761A (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210859288.2A Pending CN115235761A (en) | 2022-07-20 | 2022-07-20 | Test bench for verifying gear train strength of differential assembly and verification method |
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| CN (1) | CN115235761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117969083A (en) * | 2024-03-29 | 2024-05-03 | 麦格纳动力总成(江西)有限公司 | Differential slip test method, differential slip test system, readable storage medium and readable storage device |
-
2022
- 2022-07-20 CN CN202210859288.2A patent/CN115235761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117969083A (en) * | 2024-03-29 | 2024-05-03 | 麦格纳动力总成(江西)有限公司 | Differential slip test method, differential slip test system, readable storage medium and readable storage device |
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