CN114593914A - Differential mechanism assembly impact torsion fatigue strength test bench - Google Patents
Differential mechanism assembly impact torsion fatigue strength test bench Download PDFInfo
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- CN114593914A CN114593914A CN202210326646.3A CN202210326646A CN114593914A CN 114593914 A CN114593914 A CN 114593914A CN 202210326646 A CN202210326646 A CN 202210326646A CN 114593914 A CN114593914 A CN 114593914A
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 title claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 32
- 230000007704 transition Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 15
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a test bed frame for impact torsional fatigue strength of a differential assembly, which comprises a test bed base, wherein a first fixed seat and a second fixed seat are fixedly connected to the test bed base, a hydraulic oscillating cylinder is arranged on the first fixed seat, an angle sensor is arranged at the tail end of the hydraulic oscillating cylinder, the output end of the hydraulic oscillating cylinder is connected with a loading shaft through a first coupler, a torque sensor is arranged on the loading shaft, the other end of the loading shaft is connected with a connecting shaft arranged on the second fixed seat through a second coupler, one end of the connecting shaft far away from the loading shaft is fixedly connected with a differential loading device, a differential assembly is arranged in the differential loading device, the axes of the hydraulic oscillating cylinder, the loading shaft, the connecting shaft and the differential assembly are positioned on the same straight line, the test bed frame can meet the impact torsional fatigue strength test of different types of differential assemblies, the differential loading device is flexible to disassemble and assemble, and is convenient for later maintenance and maintenance of equipment.
Description
Technical Field
The invention relates to the technical field of differential tests, in particular to a differential assembly impact torsion fatigue strength test bench.
Background
The automobile transmission is an important component of a chassis transmission system, and the performance of the transmission directly influences the dynamic property, operability and fuel economy of an automobile, so that the performance evaluation of the automobile transmission is particularly important. The impact and torsion fatigue resistance is one of the important performances of the transmission, and the main purpose is to verify the bearing capacity of the parts such as the half axle gear, the planetary gear shaft, the gasket, the differential shell and the like for bearing the maximum torque instant impact. The current common transmission test bed has the following problems: the impact torsion fatigue strength test of the differential mechanism of an independent differential mechanism assembly or a differential mechanism integrated with the transmission assembly cannot be completed; flexible disassembly and assembly cannot be realized between the testing device and the vertical plate of the test bed; the fixing method of the output end of the test bed cannot be flexibly adjusted, and the test requirements of various types of transmission assemblies and differential assemblies cannot be met.
Disclosure of Invention
The invention aims to provide a differential assembly impact torsion fatigue strength test bench aiming at the defects of the prior art, which can meet the requirement of performing impact torsion fatigue strength tests on different types of differential assemblies, and the differential loading device is flexible to disassemble and assemble and is convenient for later-stage maintenance and repair of equipment.
The technical scheme of the invention is as follows: the utility model provides a differential mechanism assembly impact torsion fatigue strength test bench, includes the test bench base, first fixing base of fixed connection, second fixing base on the test bench base, set up hydraulic pressure swing jar on the first fixing base, hydraulic pressure swing jar's end sets up angle sensor, hydraulic pressure swing jar's output is connected with the loading shaft through first shaft coupling, the epaxial torque sensor that sets up of loading, the loading shaft other end passes through the hookup hub connection that sets up on second shaft coupling and the second fixing base, the one end fixed connection differential mechanism loading attachment of loading shaft is kept away from to the hookup shaft, install differential mechanism assembly in the differential mechanism loading attachment, the axle center of hydraulic pressure swing jar, loading shaft, hookup shaft and differential mechanism assembly is located same straight line.
The differential loading device comprises a differential loading tool, a first differential locking spline shaft, a second differential locking spline shaft, a first differential assembly locking seat and a second differential assembly locking seat, one end of the differential loading tool is fixedly connected with the connecting shaft, the first differential assembly locking seat and the second differential assembly locking seat are in sliding fit on the base of the test bed, the outer side of the first differential assembly locking seat is fixedly connected with the first differential locking spline shaft through a bolt, the inner side of the first differential assembly locking seat is provided with a bearing mounting ring, the outer side of the second differential assembly locking seat is fixedly connected with the second differential locking spline shaft through a bolt, the inner side of the second differential assembly locking seat is provided with a bearing mounting ring, and a half shaft bevel gear of the differential assembly is in spline fit with the first differential locking spline shaft and the second differential locking spline shaft respectively, the cone bearing of the differential assembly is matched on the bearing mounting ring, the differential shell is fixedly connected with the differential input gear, and the differential input gear is fixedly connected with the other end of the differential loading tool.
Differential mechanism loading frock folds in opposite directions by left frock, right frock and constitutes, left side frock, right frock pass through parallel key fixed connection.
The differential loading device comprises a loading crankshaft, a third differential locking spline shaft, a fourth differential locking spline shaft and an assembly mounting vertical plate, the third differential locking spline shaft is fixedly connected with the connecting shaft, the fourth differential locking spline shaft is fixedly connected with one end of the loading crankshaft, the other end of the loading crankshaft is fixedly connected with the connecting shaft, the assembly mounting vertical plate is in sliding fit with the base of the test bed, an assembly mounting transition plate is arranged on the left side of the assembly mounting vertical plate, a transmission input shaft locking spline shaft is fixedly connected to the assembly mounting vertical plate, the transmission assembly is mounted on the assembly mounting transition plate, and a half shaft bevel gear of the transmission assembly is in spline fit with the third differential locking spline shaft and the fourth differential locking spline shaft respectively, and an input shaft of the transmission assembly is in spline fit with the transmission input shaft locking spline shaft.
The hydraulic swing cylinder is characterized in that an oil separator is mounted at the top of the hydraulic swing cylinder, an oil inlet and an oil outlet are formed in the oil separator, servo valve groups are arranged on two sides of the oil separator, and limiting plates are arranged on the left side and the right side of the hydraulic swing cylinder.
The torque loading direction of the differential assembly is positive and negative, and the torque loading waveform is sine wave, rectangular wave or triangular wave.
The hydraulic oscillating cylinder is a double-blade servo oscillating cylinder, the oscillating loading angle range is +/-60 degrees, and the control precision of the oscillating loading angle of the hydraulic oscillating cylinder is less than or equal to 0.5 degrees.
The maximum torque of the hydraulic oscillating cylinder is 18000Nm, the loading frequency is more than or equal to 5HZ when the oscillating loading angle is +/-20 degrees, and the loading frequency control precision of the hydraulic oscillating cylinder is as follows: not more than 0.1 HZ.
The invention has the beneficial effects that: the differential loading device can be replaced according to test requirements, can meet the impact torsional fatigue strength test of an independent differential assembly, and can also meet the impact torsional fatigue strength test of a differential with a transmission assembly integrated structure.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged view taken at A of FIG. 1;
FIG. 4 is a schematic structural diagram of another embodiment of the present invention;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a right side view of FIG. 4;
fig. 7 is a rear view of fig. 4.
In the attached drawings, a test bed base 1, a first fixing seat 2, a second fixing seat 3, a hydraulic swing cylinder 4, an angle sensor 5, a loading shaft 6, a torque sensor 7, a connecting shaft 8, a differential loading tool 9, a left tool 91, a right tool 92, a flat key 93, a bearing mounting ring 94, a first differential locking spline shaft 10, a second differential locking spline shaft 11, a first differential assembly locking seat 12, a second differential assembly locking seat 13, a loading crankshaft 14, an assembly mounting plate 15, an assembly transition plate 16, a third differential locking spline shaft 17, a fourth differential locking spline shaft 18, a transmission input shaft locking spline shaft 19, an oil separator 20, an oil inlet 201, an oil outlet 202, a servo valve group 21 and a limiting plate 22 are arranged.
Detailed Description
Referring to fig. 1 to 7, the test bench for impact torsion fatigue strength of the differential assembly comprises a test bench base 1, wherein a first fixing seat 2 and a second fixing seat 3 are fixedly connected to the test bench base 1, a hydraulic swing cylinder 4 is arranged on the first fixing seat 2, an oil distributor 20 is installed at the top of the hydraulic swing cylinder 4, an oil inlet 201 and an oil outlet 202 are arranged on the oil distributor 20, hydraulic oil enters the oil distributor 20 through the oil inlet 201, servo valve groups 21 are arranged on two sides of the oil distributor 20, the hydraulic oil is controlled by the two servo valve groups 21 to drive the hydraulic swing cylinder 4 to generate output torque, limiting plates 22 are arranged on the left side and the right side of the hydraulic swing cylinder 4, the limiting plates 22 limit the hydraulic swing cylinder 4, and an angle sensor 5 is arranged at the tail end of the hydraulic swing cylinder 4. The hydraulic oscillating cylinder 4 is a double-blade servo oscillating cylinder, the oscillating loading angle range is +/-60 degrees, and the control precision of the oscillating loading angle of the hydraulic oscillating cylinder 4 is less than or equal to 0.5 degrees. The maximum torque of the hydraulic oscillating cylinder 4 is 18000Nm, the loading frequency is more than or equal to 5HZ when the oscillating loading angle is +/-20 degrees, and the control precision of the loading frequency of the hydraulic oscillating cylinder 4 is as follows: not more than 0.1 HZ. The output of hydraulic swing cylinder 4 is connected with loading shaft 6 through first shaft coupling, set up torque sensor 7 on the loading shaft 6, torque sensor 7 is used for reading real-time moment of torsion, and the connecting shaft 8 that sets up on loading shaft 6 other end passes through second shaft coupling and the second fixing base 3 is connected, the one end fixed connection differential loading device of loading shaft 6 is kept away from to connecting shaft 8, install the differential mechanism assembly in the differential mechanism loading device, the axle center of hydraulic swing cylinder 4, loading shaft 6, connecting shaft 8 and differential mechanism assembly is located same straight line. The torque loading direction of the differential assembly is positive and negative, and the torque loading waveform is sine wave, rectangular wave or triangular wave.
Example 1: referring to fig. 1 to 3, the differential loading device of the present embodiment includes a differential loading tool 9, a first differential locking spline shaft 10, a second differential locking spline shaft 11, a first differential assembly locking seat 12, and a second differential assembly locking seat 13, where the differential loading tool 9 is formed by oppositely folding a left tool 91 and a right tool 92, and the left tool 91 and the right tool 92 are fixedly connected through a flat key 93. The left tool 91 of the differential loading tool 9 is fixedly connected with the connecting shaft 8 through bolts, a first differential assembly locking seat 12 and a second differential assembly locking seat 13 are in sliding fit on the test bed base 1, the outer side of the first differential assembly locking seat 12 is fixedly connected with a first differential locking spline shaft 10 through bolts, the inner side of the first differential assembly locking seat 12 is provided with a bearing mounting ring 94, the outer side of the second differential assembly locking seat 13 is fixedly connected with a second differential locking spline shaft 11 through bolts, the inner side of the second differential assembly locking seat 13 is provided with a bearing mounting ring 94, a half shaft bevel gear of the differential assembly is respectively in spline fit with the first differential locking spline shaft 10 and the second differential locking spline shaft 11, a cone bearing of the differential assembly is matched on the bearing mounting ring 94, and a differential shell is fixedly connected with a differential input gear, the differential input gear is fixedly connected with a right tool 92 of the differential loading tool 9 through a bolt.
Example 2: referring to fig. 4 to 7, the differential loading device of the present embodiment includes a loading crankshaft 14, a third differential locking spline shaft 17, a fourth differential locking spline shaft 18, and an assembly mounting upright plate, where the third differential locking spline shaft 17 is fixedly connected to the coupling shaft 8, the fourth differential locking spline shaft 18 is fixedly connected to the right end of the loading crankshaft 14, the left end of the loading crankshaft 14 is fixedly connected to the side of the coupling shaft 8, the third differential locking spline shaft 17 is also fixedly connected to the left end of the loading crankshaft 14, the assembly mounting upright plate is slidably fitted on the test bed base 1, the assembly mounting upright plate is disposed behind the third differential locking spline shaft 17 and the fourth differential locking spline shaft 18, an assembly mounting transition plate is disposed on the left side of the assembly mounting upright plate, and the assembly mounting transition plate is fixedly connected to the assembly mounting upright plate, the assembly installation vertical plate is fixedly connected with a transmission input shaft locking spline shaft 19, the transmission input shaft locking spline shaft 19 penetrates through the assembly installation transition plate, the transmission assembly is installed on the assembly installation transition plate, a half shaft bevel gear of the transmission assembly is in spline fit with a third differential locking spline shaft 17 and a fourth differential locking spline shaft 18 respectively, and an input shaft of the transmission assembly is in spline fit with the transmission input shaft locking spline shaft 19.
When the impact torsional fatigue strength test of the differential assembly is carried out, the device is operated and used according to the following steps:
firstly, a differential assembly is installed on a differential loading tool 9, a half shaft bevel gear of the differential assembly is in spline fit with a first differential locking spline shaft 10 and a second differential locking spline shaft 11 respectively, a bevel bearing of the differential assembly is matched on a bearing installation ring 94, a differential input gear is fixedly connected with a right tool 92 of the differential loading tool 9, then a hydraulic swing cylinder 4 is started, torque is transmitted to a loading shaft 6 through the hydraulic swing cylinder 4, the torque is transmitted to a connecting shaft 8 through the loading shaft 6, the torque is transmitted to the differential assembly on the differential loading tool 9 through the connecting shaft 8, an angle sensor 5 reads a real-time angle, and a torque sensor 7 reads the real-time torque.
When the transmission assembly is subjected to an impact torsion fatigue strength test, the device is operated and used according to the following steps:
firstly, a transmission assembly is installed on an assembly installation transition plate, a half shaft bevel gear of the transmission assembly is in spline fit with a third differential locking spline shaft 17 and a fourth differential locking spline shaft 18 respectively, an input shaft of the transmission assembly is in spline fit with a transmission input shaft locking spline shaft 19, then torque is transmitted to a loading shaft 6 through a hydraulic swing cylinder 4, then the torque is transmitted to a connecting shaft 8 through the loading shaft 6, then the torque is transmitted to the transmission assembly through the connecting shaft 8, an angle sensor 5 reads a real-time angle, and a torque sensor 7 reads the real-time torque.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications of the present invention by those skilled in the art are within the scope of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a differential mechanism assembly strikes torsional fatigue strength test bench, includes the test bench base, first fixing base of fixed connection, second fixing base on the test bench base, its characterized in that: set up hydraulic pressure swing cylinder on the first fixing base, the end of hydraulic pressure swing cylinder sets up angle sensor, the output of hydraulic pressure swing cylinder is connected with the loading shaft through first shaft coupling, set up torque sensor on the loading shaft, the loading shaft other end passes through the hookup hub connection that sets up on second shaft coupling and the second fixing base, the one end fixed connection differential loading device of loading shaft is kept away from to the hookup shaft, install the differential mechanism assembly in the differential mechanism loading device, the axle center of hydraulic pressure swing cylinder, loading shaft, hookup shaft and differential mechanism assembly is located same straight line.
2. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the differential loading device comprises a differential loading tool, a first differential locking spline shaft, a second differential locking spline shaft, a first differential assembly locking seat and a second differential assembly locking seat, one end of the differential loading tool is fixedly connected with the connecting shaft, the first differential assembly locking seat and the second differential assembly locking seat are in sliding fit on the base of the test bed, the outer side of the first differential assembly locking seat is fixedly connected with the first differential locking spline shaft through a bolt, the inner side of the first differential assembly locking seat is provided with a bearing mounting ring, the outer side of the second differential assembly locking seat is fixedly connected with the second differential locking spline shaft through a bolt, the inner side of the second differential assembly locking seat is provided with a bearing mounting ring, and a half shaft bevel gear of the differential assembly is in spline fit with the first differential locking spline shaft and the second differential locking spline shaft respectively, the cone bearing of the differential assembly is matched on the bearing mounting ring, the differential shell is fixedly connected with the differential input gear, and the differential input gear is fixedly connected with the other end of the differential loading tool.
3. The differential assembly impact torsional fatigue strength test stand of claim 2, wherein: differential mechanism loading frock folds in opposite directions by left frock, right frock and constitutes, left side frock, right frock pass through parallel key fixed connection.
4. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the differential loading device comprises a loading crankshaft, a third differential locking spline shaft, a fourth differential locking spline shaft and an assembly mounting vertical plate, the third differential locking spline shaft is fixedly connected with the connecting shaft, the fourth differential locking spline shaft is fixedly connected with one end of the loading crankshaft, the other end of the loading crankshaft is fixedly connected with the connecting shaft, the assembly mounting vertical plate is in sliding fit with the base of the test bed, an assembly mounting transition plate is arranged on the left side of the assembly mounting vertical plate, a transmission input shaft locking spline shaft is fixedly connected to the assembly mounting vertical plate, the transmission assembly is mounted on the assembly mounting transition plate, and a half shaft bevel gear of the transmission assembly is in spline fit with the third differential locking spline shaft and the fourth differential locking spline shaft respectively, and an input shaft of the transmission assembly is in spline fit with the transmission input shaft locking spline shaft.
5. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the hydraulic swing cylinder is characterized in that an oil separator is mounted at the top of the hydraulic swing cylinder, an oil inlet and an oil outlet are formed in the oil separator, servo valve groups are arranged on two sides of the oil separator, and limiting plates are arranged on the left side and the right side of the hydraulic swing cylinder.
6. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the torque loading direction of the differential assembly is positive and negative, and the torque loading waveform is sine wave, rectangular wave or triangular wave.
7. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the hydraulic oscillating cylinder is a double-blade servo oscillating cylinder, the oscillating loading angle range is +/-60 degrees, and the control precision of the oscillating loading angle of the hydraulic oscillating cylinder is less than or equal to 0.5 degrees.
8. The differential assembly impact torsional fatigue strength test stand of claim 1, wherein: the maximum torque of the hydraulic oscillating cylinder is 18000Nm, the loading frequency is more than or equal to 5HZ when the oscillating loading angle is +/-20 degrees, and the loading frequency control precision of the hydraulic oscillating cylinder is as follows: not more than 0.1 HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210326646.3A CN114593914A (en) | 2022-03-30 | 2022-03-30 | Differential mechanism assembly impact torsion fatigue strength test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210326646.3A CN114593914A (en) | 2022-03-30 | 2022-03-30 | Differential mechanism assembly impact torsion fatigue strength test bench |
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| Publication Number | Publication Date |
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| CN114593914A true CN114593914A (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210326646.3A Pending CN114593914A (en) | 2022-03-30 | 2022-03-30 | Differential mechanism assembly impact torsion fatigue strength test bench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184706A (en) * | 2022-07-04 | 2022-10-14 | 重庆理工清研凌创测控科技有限公司 | Loading structure for online detection of electric drive system of direct-drive structure vehicle |
| CN115235761A (en) * | 2022-07-20 | 2022-10-25 | 四川建安工业有限责任公司 | Test bench and verification method for strength verification of differential assembly gear train |
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| US20150040654A1 (en) * | 2013-08-06 | 2015-02-12 | Soresh Khateri | Differential lock and differential testing device |
| CN105716860A (en) * | 2016-04-07 | 2016-06-29 | 合肥美桥汽车传动及底盘系统有限公司 | Torsional fatigue test device for automobile planetary gear differential and method of torsional fatigue test device |
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| CN209624272U (en) * | 2018-12-29 | 2019-11-12 | 苏州凯瑞汽车测试研发有限公司 | A kind of corner regulating device of differential mechanism torsional fatigue test |
| CN210071329U (en) * | 2019-07-24 | 2020-02-14 | 中汽研汽车检验中心（天津）有限公司 | Novel multi-functional high-efficient differential mechanism torsion test device |
| CN113532850A (en) * | 2020-04-14 | 2021-10-22 | 陕西汉德车桥有限公司 | Torsional fatigue test device and method for differential spider |
-
2022
- 2022-03-30 CN CN202210326646.3A patent/CN114593914A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100628388B1 (en) * | 2005-03-25 | 2006-09-26 | 양진승 | Friction Performance Tester for Differential Limiter |
| US20150040654A1 (en) * | 2013-08-06 | 2015-02-12 | Soresh Khateri | Differential lock and differential testing device |
| JP2016148554A (en) * | 2015-02-10 | 2016-08-18 | トヨタ自動車株式会社 | Operation test method of transmission and differential case |
| CN105716860A (en) * | 2016-04-07 | 2016-06-29 | 合肥美桥汽车传动及底盘系统有限公司 | Torsional fatigue test device for automobile planetary gear differential and method of torsional fatigue test device |
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| CN210071329U (en) * | 2019-07-24 | 2020-02-14 | 中汽研汽车检验中心（天津）有限公司 | Novel multi-functional high-efficient differential mechanism torsion test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184706A (en) * | 2022-07-04 | 2022-10-14 | 重庆理工清研凌创测控科技有限公司 | Loading structure for online detection of electric drive system of direct-drive structure vehicle |
| CN115235761A (en) * | 2022-07-20 | 2022-10-25 | 四川建安工业有限责任公司 | Test bench and verification method for strength verification of differential assembly gear train |
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