CN104697791A - Fatigue endurance test measuring system of automobile automatic gearbox P-gear parking mechanism - Google Patents
Fatigue endurance test measuring system of automobile automatic gearbox P-gear parking mechanism Download PDFInfo
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- CN104697791A CN104697791A CN201510157877.6A CN201510157877A CN104697791A CN 104697791 A CN104697791 A CN 104697791A CN 201510157877 A CN201510157877 A CN 201510157877A CN 104697791 A CN104697791 A CN 104697791A
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Abstract
The invention discloses a fatigue endurance test measuring system of an automobile automatic gearbox P-gear parking mechanism. The fatigue endurance test measuring system comprises a test device part and a measuring control part. The test device part comprises an installing base, the automatic gearbox to be measured, a gearbox installing basic frame, a torque sensor, a loader, a brake device, a driving motor, a gear shifting device and a gear shifting mechanical arm. The measuring control part comprises a computer, a braking controller, a loading controller, a data collector and a driving motor controller. Test measuring can be performed on the fatigue life of the P-gear parking mechanism through simulating the test working conditions, on an ascending road and a descending road, of the automatic gearbox, so that the reliability and accuracy of fatigue endurance tests of the automatic gearbox P-gear parking mechanism are improved.
Description
Technical field
The present invention relates to car test techniqes field, particularly relate to automatic transmission P in automobile dynamic system and keep off parking performance test measuring system, specifically, relate to a kind of automatic gearbox P and keep off halting mechanism fatigue endurance test measuring system.
Background technology
Along with the development of vehicle transmission technology, automatic transmission, due to features such as its processing ease, driving comfort, smooth gear shifting, has become an important development direction of automotive transmission.P keeps off the important component part of halting mechanism as automatic transmission, P keeps off parking and is made up of spreadet spreadet wheel, lock pin ratchet and a set of control device, spreadet spreadet wheel and transmission output shaft are rigidly connected under normal circumstances, and lock pin ratchet and control device are fixed on case of transmission.When automatic transmission is not linked into P gear, control device controls lock pin ratchet and spreadet spreadet wheel is in released state, and spreadet spreadet wheel can rotate arbitrarily with transmission output shaft; When automatic transmission is linked into P gear, control device makes lock pin ratchet be combined with spreadet spreadet wheel, thus make together with transmission output shaft is locked at case of transmission rigidity, realizes long-time stable with the automobile guaranteeing to carry automatic transmission and park, avoid slipping car phenomenon.But keeping off halting mechanism in order to ensure P can reliably working in automatic transmission Life cycle, often need that halting mechanism is kept off to automatic transmission P newly developed and carry out fatigue durability testing, to verify its fatigue reliability.
Therefore, how carrying out fatigue durability engine bench test according to keeping off halting mechanism to its P under automatic transmission real vehicle installment state, also there is no the report of correlation test measurement mechanism at present both at home and abroad.Therefore, need a kind of automatic gearbox P of design badly and keep off halting mechanism fatigue endurance test measuring system, under can simulating automatic transmission real vehicle installment state completely, P keeps off the test of halting mechanism fatigue durability, and this is significant for the shortening automatic transmission construction cycle.
Summary of the invention
Not enough for prior art, a kind of automatic gearbox P is the object of the present invention is to provide to keep off halting mechanism fatigue endurance test measuring system, under the operating condition of test such as level road, up gradient, gug, halting mechanism can be kept off to its P in simulation automatic transmission to carry out test fatigue lifetime and measure, thus provide powerful support for fatigue endurance test research of automatic transmission P gear halting mechanism.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is such: a kind of automatic gearbox P keeps off halting mechanism fatigue endurance test measuring system, it is characterized in that: comprise test unit part and observing and controlling part;
Described test unit part comprises mounting base, automatic transmission to be measured, variator installing base frame, torque sensor, loader, detent, drive motor, selector and gear shifting manipulator; Described variator installing base frame is mounted by means of bolts on mounting base, described automatic transmission to be measured, torque sensor, loader and detent are installed on the same side of variator installing base frame, and the axial line of torque sensor, loader, detent and automatic transmission to be measured half axis hole overlaps and is in same level straight line, and described drive motor, selector and gear shifting manipulator are installed on the opposite side of variator installing base frame;
Wherein, torque sensor and loader respectively by sensor base and loader floor installation on mounting base; Described automatic transmission to be measured is fixedly connected with variator installing base frame, its half axis hole away from variator installing base frame side is connected with one end of transmission shaft, the other end of transmission shaft is connected with torque sensor side projecting shaft by transmission shaft connection plate, torque sensor opposite side projecting shaft is connected with loader side projecting shaft by shaft coupling I, loader opposite side projecting shaft is connected with detent input shaft by shaft coupling II, and this detent is fixedly mounted on mounting base;
Described drive motor and selector are respectively by motor base and selector floor installation on mounting base, and wherein, drive motor output shaft is connected with automatic transmission input shaft to be measured; Described selector keeps off topworks according to real vehicle mounting means with automatic transmission P to be measured by real vehicle gear-shifting inhaul cable and is connected, and can control the income of automatic transmission P to be measured gear and stay out by selector; Described gear shifting manipulator is also installed on mounting base, and is socketed mode with selector by bulb and is connected;
Described observing and controlling part comprises computing machine, brake monitor, loading control, data acquisition unit and drive motor controller; Described computing machine is connected with drive motor controller, loading control, brake monitor and gear shifting manipulator by communication modes simultaneously, and instruction interaction can be realized, thus realize the Collaborative Control to drive motor, loader, detent and gear shifting manipulator in process of the test; Meanwhile, computing machine is connected with data acquisition unit by communication modes, and torque sensor is outputed signal access data collector, thus realizes the Real-time Collection of dtc signal in process of the test.
By the combination of test unit part and observing and controlling part, the various operating modes (as at level road, up gradient, gug etc.) when automatic transmission is assemblied in real vehicle can be simulated well; And carry out Real-time Collection to the Driving Torque signal in automatic transmission under various operating mode, thus under effectively can obtaining various operating mode, the P of automatic transmission keeps off halting mechanism fatigue endurance test data.Like this, effectively can improve reliability and the accuracy of the signal that computing machine collects, thus the fatigue endurance test research keeping off halting mechanism for automatic transmission P provides accurately, authentic experiments data.
Further, when automatic transmission P gear spreadet spreadet wheel to be measured is positioned at differential mechanism higher level axle system, half axis hole of described automatic transmission opposite side to be measured is connected with a locking shaft, described locking shaft is installed on mounting base by locking axle bed, thus realizes the monolateral differential mechanism locking of automatic transmission to be measured.
Compared with prior art, tool of the present invention has the following advantages:
1. testing & measuring system simplicity of design, mounting and adjusting is convenient, and in test unit, automatic transmission installation connected mode is consistent with its real vehicle, thus ensure that the feasibility of test unit.
2. in pilot system, the torque numerical value on transmission shaft directly measured by utilization and the rigidly connected torque sensor of transmission shaft, to eliminate in test unit other parts to the impact of test findings, thus automatic transmission P more accurately can be obtained keep off halting mechanism fatigue endurance test data.
3. pilot system can arrange operating condition of test by control program special in computing machine, and the automatic transmission P that (comprises level road, upward slope, descending) under being convenient to realize different working condition keeps off the simulation of halting mechanism load.
4. pilot system adopts computing machine Automatic Control process of the test, can realize unmanned condition lower 24 hours long run tests, greatly shorten the test period, improve test efficiency.
5. utilize drive motor to drag automatic transmission P in test unit and keep off parking lock pinion rotation, the selection randomness of the work tooth of spreadet spreadet wheel during each parking in process of the test can be guaranteed, thus make the fatigue endurance test result of automatic transmission P gear halting mechanism more true and reliable.
Accompanying drawing explanation
Fig. 1 is that automatic transmission P keeps off halting mechanism fatigue endurance test measuring system structural drawing.
Fig. 2 is that automatic transmission P keeps off halting mechanism fatigue endurance test Survey control schematic diagram.
In accompanying drawing: 1-mounting base, 2-variator installing base frame, 3-automatic transmission to be measured, 4-locking shaft, 5-locking axle bed, 6-transmission shaft, 7-transmission shaft connection plate, 8-torque sensor, 9-sensor base, 10-shaft coupling I, 11-loader, 12-loader base, 13-shaft coupling II, 14-detent, 15-brake monitor, 16-loading control, 17-computing machine, 18-data acquisition unit, 19-drive motor controller, 20-selector base, 21-motor base, 22-drive motor, 23-selector, 24-real vehicle gear-shifting inhaul cable, 25-gear shifting manipulator.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment: see Fig. 1, Fig. 2, a kind of automatic gearbox P keeps off halting mechanism fatigue endurance test measuring system, comprises test unit part and observing and controlling part.
Described test unit part comprises mounting base 1, automatic transmission to be measured 3, variator installing base frame 2, torque sensor 8, loader 11, detent 14, drive motor 22, selector 23 and gear shifting manipulator 25.Described mounting base 1 is tabular iron ground, thus guarantees mounting and adjusting convenience and the stability of testing & measuring system.Described variator installing base frame 2 is mounted by means of bolts on mounting base 1, described automatic transmission to be measured 3, torque sensor 8, loader 11 and detent 14 are installed on the same side of variator installing base frame 2, and the axial line of torque sensor 8, loader 11, detent 14 and automatic transmission to be measured 3 half axis hole overlaps and is in same level straight line, thus eliminate radial force in P gear halting mechanism loading procedure; Described drive motor 22, selector 23 and gear shifting manipulator 25 are installed on the opposite side of variator installing base frame 2, and drive motor 22 output shaft overlaps with the axial line of automatic transmission 3 input shaft to be measured.
Wherein, torque sensor 8 and loader 11 are installed on mounting base 1 respectively by sensor base 9 and loader base 12; All adopt to rigidly fix between torque sensor 8 with sensor base 9 and between sensor base 9 with mounting base 1 and be connected; Also adopt to rigidly fix between loader 11 with loader base 12 and between loader base 12 with mounting base 1 and be connected.Described automatic transmission to be measured 3 rigidly fixes the side being installed on variator installing base frame 2; Its half axis hole away from variator installing base frame 2 side is connected with one end of transmission shaft 6, and to be coordinated with splined hole by spline tooth and be connected.The other end of transmission shaft 6 is connected with the projecting shaft of torque sensor 8 side by transmission shaft connection plate 7; Wherein, transmission shaft 6 is also connected with transmission shaft connection plate 7 with the cooperation of splined hole by spline tooth, and transmission shaft connection plate 7 is rigidly connected with the projecting shaft of torque sensor 8.The projecting shaft of torque sensor 8 opposite side is rigidly connected by the projecting shaft of shaft coupling I10 and loader 11 side, and the projecting shaft of loader 11 opposite side is rigidly connected by the input shaft of shaft coupling II13 and detent 14.The pedestal of described detent 14 and caliper are fixedly mounted on mounting base 1; And brake disc and the input shaft of detent 14 are integrated.
Described drive motor 22 and selector 23 are installed on mounting base 1 respectively by motor base 21 and selector base 20; Wherein, the motor shaft of drive motor 22 and the input shaft of automatic transmission to be measured 3 rigidly connected, this drive motor 22 keeps off spreadet spreadet wheel rotate for dragging automatic transmission P, keeps off the work tooth Stochastic choice of spreadet spreadet wheel to realize P.Described selector 23 keeps off topworks by real vehicle gear-shifting inhaul cable 24 with the P of automatic transmission 3 to be measured and is connected, and the P that can be controlled automatic transmission 3 to be measured by selector 23 is kept off income and stays out; Described gear shifting manipulator 25 is also installed on mounting base 1, and is socketed mode with selector 23 by bulb and is connected.
Described observing and controlling part comprises computing machine 17, brake monitor 15, loading control 16, data acquisition unit 18 and drive motor controller 19.Described computing machine 17 is connected with drive motor controller 19, loading control 16, brake monitor 15 and gear shifting manipulator 25 by communication modes simultaneously, and it is mutual to realize director data, thus realize the Collaborative Control to drive motor 22, loader 11, detent 14 and gear shifting manipulator 25 in process of the test.Meanwhile, computing machine 17 is connected with data acquisition unit 18 by communication modes, and torque sensor 8 is outputed signal access data collector 18, thus realizes the Real-time Collection of dtc signal in process of the test.
Loading control 16 realizes the mutual of steering order by communication modes and computing machine 17, computing machine 17 is by loading control 16 controlled loading device 11 duty, realize loader 11 and simulate car load parking load, namely by loader 11 simulate car load in different road conditions automatic transmission P keep off parking time halting mechanism load.
Brake monitor 15 realizes the mutual of steering order by communication modes and computing machine 17, computing machine 17 by brake monitor 15 control brake 14 duty, realize detent 14 simulate car load P gear stay out before the function stepping on foot brake.
Adopt the instruction of communication modes interactive controlling between drive motor controller 19 and computing machine 17, computing machine 17 controls drive motor 22 start and stop state by drive motor controller 19, realizes selecting automatic transmission P to keep off parking tooth in process of the test randomly.
Adopt communication modes to realize steering order between gear shifting manipulator 25 and computing machine 17 mutual, process of the test Computer 17 controls gear shifting manipulator 25 and strictly keeps off fatigue endurance test method according to P and control the gear level income of selector 23/stay out P gear; In process of the test, torque sensor 8 real-time continuous measures the dtc signal on transmission shaft 6, and in real time by Signal transmissions to data acquisition unit 18, data acquisition unit 18 change after digital signal input computing machine 17 show in real time and record.
This testing & measuring system can be tested for different model automatic transmission, installs the hole that is located by connecting just can reach test objective only by processing different model automatic transmission in variator installing base frame 2.
It should be noted that, the P that above-mentioned test unit part is applicable to automatic transmission 3 to be measured keeps off spreadet spreadet wheel and is positioned at situation on differential carrier, that is: test unit does not need to adopt locking shaft 4 to the monolateral differential mechanism locking of automatic transmission 3 to be measured.
When the P gear spreadet spreadet wheel of automatic transmission 3 to be measured is positioned at differential mechanism higher level axle system, the monolateral differential mechanism of automatic transmission 3 to be measured needs to adopt described locking shaft 4 to carry out monolateral differential mechanism locking.During concrete enforcement, half axis hole of described automatic transmission 3 opposite side to be measured is connected with a locking shaft 4, and described locking shaft 4 is installed on mounting base 1 by locking axle bed 5, thus realizes the monolateral differential mechanism locking of automatic transmission 3 to be measured.Wherein, described locking shaft 4 is connected on locking axle bed 5 by spline tooth, and described locking axle bed 5 rigidly fixes and is installed on mounting base 1.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (2)
1. automatic gearbox P keeps off a halting mechanism fatigue endurance test measuring system, it is characterized in that: comprise test unit part and observing and controlling part;
Described test unit part comprises mounting base, automatic transmission to be measured, variator installing base frame, torque sensor, loader, detent, drive motor, selector and gear shifting manipulator; Described variator installing base frame is mounted by means of bolts on mounting base, described automatic transmission to be measured, torque sensor, loader and detent are installed on the same side of variator installing base frame, and the axial line of torque sensor, loader, detent and automatic transmission to be measured half axis hole overlaps and is in same level straight line, and described drive motor, selector and gear shifting manipulator are installed on the opposite side of variator installing base frame;
Wherein, torque sensor and loader respectively by sensor base and loader floor installation on mounting base; Described automatic transmission to be measured is fixedly connected with variator installing base frame, its half axis hole away from variator installing base frame side is connected with one end of transmission shaft, the other end of transmission shaft is connected with torque sensor side projecting shaft by transmission shaft connection plate, torque sensor opposite side projecting shaft is connected with loader side projecting shaft by shaft coupling I, loader opposite side projecting shaft is connected with detent input shaft by shaft coupling II, and this detent is fixedly mounted on mounting base;
Described drive motor and selector are respectively by motor base and selector floor installation on mounting base, and wherein, drive motor output shaft is connected with automatic transmission input shaft to be measured; Described selector keeps off topworks according to real vehicle mounting means with automatic transmission P to be measured by real vehicle gear-shifting inhaul cable and is connected, and can control the income of automatic transmission P to be measured gear and stay out by selector; Described gear shifting manipulator is also installed on mounting base, and is socketed mode with selector by bulb and is connected;
Described observing and controlling part comprises computing machine, brake monitor, loading control, data acquisition unit and drive motor controller; Described computing machine is connected with drive motor controller, loading control, brake monitor and gear shifting manipulator by communication modes simultaneously, and instruction interaction can be realized, thus realize the Collaborative Control to drive motor, loader, detent and gear shifting manipulator in process of the test; Meanwhile, computing machine is connected with data acquisition unit by communication modes, and torque sensor is outputed signal access data collector, thus realizes the Real-time Collection of dtc signal in process of the test.
2. automatic gearbox P according to claim 1 keeps off halting mechanism fatigue endurance test measuring system, it is characterized in that: half axis hole of described automatic transmission opposite side to be measured is connected with a locking shaft, described locking shaft is installed on mounting base by locking axle bed, to realize the monolateral differential mechanism locking of automatic transmission to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510157877.6A CN104697791B (en) | 2015-04-03 | 2015-04-03 | Fatigue endurance test measuring system of automobile automatic gearbox P-gear parking mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510157877.6A CN104697791B (en) | 2015-04-03 | 2015-04-03 | Fatigue endurance test measuring system of automobile automatic gearbox P-gear parking mechanism |
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| CN104697791A true CN104697791A (en) | 2015-06-10 |
| CN104697791B CN104697791B (en) | 2017-05-03 |
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| CN201510157877.6A Expired - Fee Related CN104697791B (en) | 2015-04-03 | 2015-04-03 | Fatigue endurance test measuring system of automobile automatic gearbox P-gear parking mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444728A (en) * | 2018-03-12 | 2018-08-24 | 上汽通用五菱汽车股份有限公司 | Test-bed for halting mechanism |
| CN110836771A (en) * | 2019-11-28 | 2020-02-25 | 株洲齿轮有限责任公司 | Loading test device |
| CN114624021A (en) * | 2022-02-22 | 2022-06-14 | 东风汽车集团股份有限公司 | Test bed, transmission locking mechanism torsion fatigue test method and related equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180306A (en) * | 1998-12-16 | 2000-06-30 | Meidensha Corp | Method and device for testing parking mechanism of automatic transmission |
| CN101344456A (en) * | 2008-08-18 | 2009-01-14 | 安徽巨一自动化装备有限公司 | AMT shift endurance quality testing bench |
| CN202033187U (en) * | 2011-03-29 | 2011-11-09 | 长城汽车股份有限公司 | Test platform for automatic transmission stopping mechanism |
| US20120131993A1 (en) * | 2010-11-29 | 2012-05-31 | Ford Global Technologies, Llc | Shift-By-Wire Default-To-Park Functional Verification |
| CN102620931A (en) * | 2012-03-28 | 2012-08-01 | 天津市优耐特汽车电控技术服务有限公司 | Device and method for testing performance of automatic transmission |
| CN102706558A (en) * | 2012-06-15 | 2012-10-03 | 索特传动设备有限公司 | Test platform for testing automatic gearbox |
-
2015
- 2015-04-03 CN CN201510157877.6A patent/CN104697791B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180306A (en) * | 1998-12-16 | 2000-06-30 | Meidensha Corp | Method and device for testing parking mechanism of automatic transmission |
| CN101344456A (en) * | 2008-08-18 | 2009-01-14 | 安徽巨一自动化装备有限公司 | AMT shift endurance quality testing bench |
| US20120131993A1 (en) * | 2010-11-29 | 2012-05-31 | Ford Global Technologies, Llc | Shift-By-Wire Default-To-Park Functional Verification |
| CN202033187U (en) * | 2011-03-29 | 2011-11-09 | 长城汽车股份有限公司 | Test platform for automatic transmission stopping mechanism |
| CN102620931A (en) * | 2012-03-28 | 2012-08-01 | 天津市优耐特汽车电控技术服务有限公司 | Device and method for testing performance of automatic transmission |
| CN102706558A (en) * | 2012-06-15 | 2012-10-03 | 索特传动设备有限公司 | Test platform for testing automatic gearbox |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444728A (en) * | 2018-03-12 | 2018-08-24 | 上汽通用五菱汽车股份有限公司 | Test-bed for halting mechanism |
| CN110836771A (en) * | 2019-11-28 | 2020-02-25 | 株洲齿轮有限责任公司 | Loading test device |
| CN114624021A (en) * | 2022-02-22 | 2022-06-14 | 东风汽车集团股份有限公司 | Test bed, transmission locking mechanism torsion fatigue test method and related equipment |
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| CN104697791B (en) | 2017-05-03 |
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