CN105716860A - Torsional fatigue test device for automobile planetary gear differential and method of torsional fatigue test device - Google Patents
Torsional fatigue test device for automobile planetary gear differential and method of torsional fatigue test device Download PDFInfo
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- CN105716860A CN105716860A CN201610212308.1A CN201610212308A CN105716860A CN 105716860 A CN105716860 A CN 105716860A CN 201610212308 A CN201610212308 A CN 201610212308A CN 105716860 A CN105716860 A CN 105716860A
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- fatigue test
- torsional fatigue
- differential mechanism
- test device
- adapter sleeve
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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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Abstract
The invention relates to a torsional fatigue test device for an automobile planetary gear differential and a method of the torsional fatigue test device.The torsional fatigue test device comprises a hydraulic servo swinging cylinder (2) connected to a test table (1), the output end of the hydraulic servo swinging cylinder is connected with a differential shell connecting sleeve (3), a support (4) is connected to the test table and connected with a first fixing seat (6), and the first fixing seat is arranged in the differential shell connecting sleeve; the test table is further connected with a torque sensor (5) which is connected with a torque display device, and a second fixing shaft (7) is connected to the torque sensor and correspondingly matched with the first fixing seat.The torsional fatigue test device has the advantages that the test device is a novel test device in the field, the adopted structure is simple, operation is convenient, and the using effect is good; before the differential is designed, developed and sized, the working stress condition of the differential is firstly simulated in a testing state, anti-torque data of the differential is obtained, and a guarantee is supplied to safe automobile driving in future.
Description
Technical field
The present invention relates to differential mechanism experimental technique field, particularly to the torsional fatigue test devices and methods therefor of a kind of automobile satellite gear differential mechanism.
Background technology
Differential assembly is the core component of drive axle, and its basic function is to be delivered on driving wheel by moment of torsion and the rotating speed of automobile engine generation, the rotating speed that reasonably distribution left and right driving is taken turns when cornering.Differential mechanism has place's power intake, two place's clutch ends, and its duty stress is complex.The torque value that differential mechanism bears is the technical parameter that one is important, through extensively retrieval, do not find, under simulation real use state, to carry out the special equipment of differential mechanism torsional fatigue test, so present stage is badly in need of wanting a kind of special torsional fatigue test device for use.
Summary of the invention
The invention aims to solve present stage lacks a kind of special purpose device for the shortcoming of differential mechanism torsional fatigue test, and the torsional fatigue test devices and methods therefor of a kind of automobile satellite gear differential mechanism proposed.
To achieve these goals, present invention employs following technical scheme:
A kind of torsional fatigue test device of automobile satellite gear differential mechanism, it is characterized in that: include testing stand, described testing stand connects hydraulic servo oscillating oil cylinder, the fixing connection difference shell adapter sleeve of outfan at described hydraulic servo oscillating oil cylinder, the sidewall of difference shell adapter sleeve is provided with resigning hole, described testing stand is also connected with support, the upside of support is arranged in poor shell adapter sleeve through described resigning hole, the fixing fixing seat of connection first in the upside of described support, it is in described poor shell adapter sleeve that first fixing seat is arranged, testing stand is also connected with torque sensor, described torque sensor connects moment of torsion display device, described torque sensor connects the second fixing axle, second fixing axle and a described first fixing corresponding matching.
On the basis of technique scheme, it is possible to have technical scheme further below:
Described poor shell adapter sleeve is logical barrel structure, is provided with, in one end of difference shell adapter sleeve, the first flange being connected with described hydraulic servo oscillating oil cylinder.
Described resigning hole is fan-shaped pylone.
Described first fixing seat includes fixing bar, is provided with spline in described fixing bar one end, the other end is provided with the second flange, and the described second fixing axle and the first fixed seat structure are identical.
It is provided with locating dowel at the back side of described second flange.
The test method of described assay device, it is characterised in that comprise the following steps:
After a, described assay device assemble, the input of connected with differential in described poor shell adapter sleeve；
B, an outfan of the differential mechanism in described poor shell adapter sleeve is fixedly connected on the described first fixing seat；
C, described differential mechanism another outfan be fixedly connected on the described second fixing axle；
D, start described hydraulic servo oscillating oil cylinder, simulate the work stress of described differential mechanism；
E, the torque value detected in conjunction with described torque sensor, carry out torsional fatigue test to described differential mechanism.
Described torsional fatigue test includes measuring described differential mechanism and bears peak torque, or when nominal torque, carries out repeatedly torsional fatigue test, to confirm that can the weakest part meet design requirement.
It is an advantage of the current invention that: this assay device is a kind of new test in this area, the simple in construction adopted, easy to operate, result of use is good, before designs of differentials exploitation sizing, first at trystate simulation differential mechanism work stressing conditions, draw the antitorque data of differential mechanism, for the guarantee together of the safety traffic offer of later automobile.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the present invention；
Fig. 2 is difference shell adapter sleeve front view；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the A-A sectional view of Fig. 2；
Fig. 5 is the first fixed seat structure schematic diagram；
Fig. 6 is the front view of support.
Detailed description of the invention
In order to make the present invention clearly understand, below in conjunction with accompanying drawing, this device being described in detail, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the torsional fatigue test device of a kind of automobile satellite gear differential mechanism provided by the invention, it is characterized in that: include testing stand 1, described testing stand 1 connects hydraulic servo oscillating oil cylinder 2, described hydraulic servo oscillating oil cylinder 2 is prior art, and this programme adopts general axle class hydraulic servo oscillating oil cylinder.
Shown in Fig. 2, Fig. 3 and Fig. 4, the fixing connection difference shell adapter sleeve 3 of oscillating oil cylinder at described hydraulic servo oscillating oil cylinder 2 outfan, described poor shell adapter sleeve 3 is logical barrel structure, it is provided with a first circular flange 3b in one end of difference shell adapter sleeve 3, the sidewall of difference shell adapter sleeve 3 is provided with resigning hole 3a, described resigning hole 3a is fan-shaped pylone, and described first flange 3b is connected by screw on the oscillating oil cylinder of described hydraulic servo oscillating oil cylinder 2.
Described in Fig. 6, described testing stand 1 is also connected with support 4, described support 4 includes riser 4a, it is provided with connecting plate 4b in the bottom of described riser 4a, between riser 4a and connecting plate 4b, it is additionally provided with a reinforcement 4e, is provided with a circular fixing plate 4d at the top of described riser 4a, is provided with circular hole 4c in the side of fixing plate 4d, uniform one group of screw mounting hole 4f on fixing plate 4d outside circular hole 4c, described connecting plate 4b is connected by screw at testing stand 1.
Fixing plate 4d on the upside of described support 4 is arranged in poor shell adapter sleeve 3 through described resigning hole 3a, and the fixing fixing seat 6 of connection first in the upside of described support 4, it is in described poor shell adapter sleeve 3 that the first fixing seat 6 is arranged.As shown in Figure 5, described first fixing seat 6 includes fixing bar 6a, be provided with spline 6b in described fixing bar 6a one end, the other end is provided with the second flange 6c, be provided with the discoidal locating dowel 6d of and described circular hole 4c location fit at the back side of described second flange 6c, described second flange 6c is connected by screw on riser 4a.
Testing stand 1 is also connected with torque sensor 5, described torque sensor 5 connects moment of torsion display device, described torque sensor 5 and moment of torsion display device are prior art, being connected by screw the second fixing axle 7 on described torque sensor 5, the second fixing axle 7 is identical with the fixing axle of the described first fixing seat 6 corresponding matching and described second 7 and the first fixing seat 6 structure.
The test method of described assay device, it is characterised in that comprise the following steps:
After a, described assay device assemble, the input of connected with differential 8 in described poor shell adapter sleeve 3, the input of described differential mechanism 8 is connected by screw the outer end at difference shell adapter sleeve 3 so that 8 one outfans of differential mechanism are arranged in poor shell adapter sleeve 3, another outfan is arranged on outside poor shell adapter sleeve 3.
B, the described first spline 6b fixing seat 6 insert in an axle shaft gear spline of the differential mechanism 8 in described poor shell adapter sleeve 3 to fix this axle shaft gear, forbid that it rotates.
C, the described second spline fixing axle 7 insert in another axle shaft gear spline of the differential mechanism 8 outside described poor shell adapter sleeve 3, to receive differential mechanism output power.
D, start described hydraulic servo oscillating oil cylinder 2, simulate the work stress of described differential mechanism 8.
E, the torque value detected in conjunction with described torque sensor 5, carry out torsional fatigue test to described differential mechanism 8.Described torsional fatigue test includes measuring described differential mechanism 8 and bears peak torque, or when nominal torque, carries out repeatedly torsional fatigue test, to confirm that can the weakest part meet design requirement.
According to satellite differential " the not poor torsion of differential " principle, the moment of torsion of the single axle shaft gear output of the differential mechanism torsional fatigue test that carries out by the above process should be the half of differential mechanism output moment of torsion, as long as therefore controlling single axle shaft gear output moment of torsion in differential mechanism torsional fatigue test and reach test output and require the 1/2 of moment of torsion.
Claims (7)
1. the torsional fatigue test device of an automobile satellite gear differential mechanism, it is characterized in that: include testing stand (1), at described testing stand (1) upper connection hydraulic servo oscillating oil cylinder (2), fixing connection difference shell adapter sleeve (3) of outfan described hydraulic servo oscillating oil cylinder (2), the sidewall of difference shell adapter sleeve (3) is provided with resigning hole (3a), described testing stand (1) is also connected with support (4), the upside of support (4) is arranged in poor shell adapter sleeve (3) through described resigning hole (3a), the fixing fixing seat (6) of connection first in the upside of described support (4), it is in described poor shell adapter sleeve (3) that first fixing seat (6) is arranged, testing stand (1) is also connected with torque sensor (5), described torque sensor (5) connects moment of torsion display device, at the upper connection of described torque sensor (5) the second fixing axle (7), second fixing axle (7) and the described first fixing seat (6) corresponding matching.
2. the torsional fatigue test device of a kind of automobile satellite gear differential mechanism according to claim 1, it is characterized in that: described poor shell adapter sleeve (3) is logical barrel structure, is provided with, in one end of difference shell adapter sleeve (3), the first flange (3b) being connected with described hydraulic servo oscillating oil cylinder (2).
3. the torsional fatigue test device of a kind of automobile satellite gear differential mechanism according to claim 1 and 2, it is characterised in that: described resigning hole (3a) is fan-shaped pylone.
4. the torsional fatigue test device of a kind of automobile satellite gear differential mechanism according to claim 1, it is characterized in that: the described first fixing seat (6) includes fixing bar (6a), be provided with spline (6b) in described fixing bar (6a) one end, the other end is provided with the second flange (6c), and the described second fixing axle (7) is identical with the first fixing seat (6) structure.
5. the torsional fatigue test device of a kind of automobile satellite gear differential mechanism according to claim 4, it is characterised in that: it is provided with locating dowel (6d) at the back side of described second flange (6c).
6. the test method of assay device according to claim 1, it is characterised in that comprise the following steps:
After a, described assay device assemble, the power intake of connected with differential (8) in described poor shell adapter sleeve (3)；
B, an outfan of the differential mechanism (8) in described poor shell adapter sleeve (3) is fixedly connected on the described first fixing seat (6)；
C, described differential mechanism (8) another outfan be fixedly connected on the described second fixing axle (7)；
D, start described hydraulic servo oscillating oil cylinder (2), simulate the work stress of described differential mechanism (8)；
E, the torque value detected in conjunction with described torque sensor (5), carry out torsional fatigue test to described differential mechanism (8).
7. the test method of assay device according to claim 6, it is characterised in that comprise the following steps: described torsional fatigue test includes measuring described differential mechanism (8) and bears peak torque, or when nominal torque, carries out repeatedly torsional fatigue test.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212308.1A CN105716860B (en) | 2016-04-07 | 2016-04-07 | A kind of torsional fatigue test devices and methods therefor of automobile satellite gear differential mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610212308.1A CN105716860B (en) | 2016-04-07 | 2016-04-07 | A kind of torsional fatigue test devices and methods therefor of automobile satellite gear differential mechanism |
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| CN105716860A true CN105716860A (en) | 2016-06-29 |
| CN105716860B CN105716860B (en) | 2018-02-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840661A (en) * | 2017-03-10 | 2017-06-13 | 方盛车桥（柳州）有限公司 | drive axle differential gear fatigue life test method |
| CN108302181A (en) * | 2018-03-27 | 2018-07-20 | 江阴市科安传动机械有限公司 | The military differential mechanism of high impact resistance and test method |
| CN114577467A (en) * | 2022-03-18 | 2022-06-03 | 盛瑞传动股份有限公司 | Gear welding assembly test method and torsional fatigue test stand |
| CN114593914A (en) * | 2022-03-30 | 2022-06-07 | 重庆青山工业有限责任公司 | Differential mechanism assembly impact torsion fatigue strength test bench |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840661A (en) * | 2017-03-10 | 2017-06-13 | 方盛车桥（柳州）有限公司 | drive axle differential gear fatigue life test method |
| CN108302181A (en) * | 2018-03-27 | 2018-07-20 | 江阴市科安传动机械有限公司 | The military differential mechanism of high impact resistance and test method |
| CN114577467A (en) * | 2022-03-18 | 2022-06-03 | 盛瑞传动股份有限公司 | Gear welding assembly test method and torsional fatigue test stand |
| CN114577467B (en) * | 2022-03-18 | 2024-05-07 | 盛瑞传动股份有限公司 | Gear welding assembly test method and torsional fatigue test bed |
| CN114593914A (en) * | 2022-03-30 | 2022-06-07 | 重庆青山工业有限责任公司 | Differential mechanism assembly impact torsion fatigue strength test bench |
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| CN105716860B (en) | 2018-02-13 |
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