CN106679975B - Transmission fatigue test device of bridge assembly - Google Patents
Transmission fatigue test device of bridge assembly Download PDFInfo
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- CN106679975B CN106679975B CN201710097401.7A CN201710097401A CN106679975B CN 106679975 B CN106679975 B CN 106679975B CN 201710097401 A CN201710097401 A CN 201710097401A CN 106679975 B CN106679975 B CN 106679975B
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- transmission
- bearing seat
- bridge assembly
- fatigue test
- chain wheel
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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
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a transmission fatigue test device of a bridge assembly, which comprises a magnetic powder brake for loading the bridge assembly, wherein an output shaft of the magnetic powder brake is sequentially connected with a transmission shaft, a rotating speed torque meter and a connecting shaft; the middle of the transmission shaft is fixedly sleeved with a first small sprocket, and the middle of the connecting shaft is fixedly sleeved with a second small sprocket; the driving hubs at two ends of the bridge assembly are respectively provided with a second large sprocket and a first large sprocket; the first small chain wheel and the second large chain wheel are connected through a first transmission chain for synchronous driving, and the second small chain wheel and the first large chain wheel are connected through a second transmission chain for synchronous driving. The invention adopts a mechanical drive chain wheel device to ensure that the output of the left end and the output of the right end of the tested bridge assembly are kept synchronous, and adopts a magnetic powder brake as a loading device to meet the requirement of loading large torque.
Description
Technical Field
The invention relates to a bridge assembly, in particular to a transmission fatigue test device of the bridge assembly.
Background
The bridge assembly is a driving bridge integrated with a motor, an axle housing, a differential and other transmission devices. After the drive axle is developed, a transmission fatigue test needs to be carried out on a rack to check the durability of the bridge assembly. At present, the transmission fatigue test of the bridge assembly is mostly carried out in a motor loading mode, namely, loading motors are connected to two ends of a driving bridge, corresponding sensors are arranged in a transmission chain, and the transmission fatigue test of the driving assembly is carried out. But it has the following drawbacks:
(1) Because the drive axle has a differential function and is independently connected with motors at two ends for driving, the synchronism of the output rotating speeds at two ends of the drive axle is realized, the requirement on a control system is very high, the control system has a complex structure, and the realization is difficult;
(2) When the driving axle transmission fatigue test is carried out according to the actual load of the whole vehicle, the output ends at the two ends of the driving axle output larger torque, and the loading motor can meet the requirement of loading torque by selecting a large power level. The power level of the loading motor is reduced, and a transmission chain between the output end of the driving axle and the loading motor is generally provided with a speed increasing device, so that the size of the rack transmission chain is prolonged, and meanwhile, the complexity of a mechanical structure is also caused;
(3) The bench test device of the motor loading type drive axle assembly has high construction cost due to the complexity of a mechanical bench and an electrical system of the bench test device, and is difficult for common enterprises to bear.
Disclosure of Invention
The invention aims to solve the problems of output synchronism at two ends of a driving axle and complexity degree of a simplified test device during a transmission fatigue test of a bridge assembly, thereby providing the transmission fatigue test device of the bridge assembly.
The specific technical scheme is as follows:
the transmission fatigue test device of the bridge assembly comprises a magnetic powder brake for loading the bridge assembly, wherein an output shaft of the magnetic powder brake is sequentially connected with a transmission shaft, a rotating speed torque meter and a connecting shaft; the middle of the transmission shaft is fixedly sleeved with a first small sprocket, and the middle of the connecting shaft is fixedly sleeved with a second small sprocket;
the driving hubs at two ends of the bridge assembly are respectively provided with a second large sprocket and a first large sprocket; the first small chain wheel and the second large chain wheel are connected through a first transmission chain for synchronous driving, and the second small chain wheel and the first large chain wheel are connected through a second transmission chain for synchronous driving.
Further, an output shaft of the magnetic powder brake is connected with one end of a transmission shaft through a first coupler, the other end of the transmission shaft is connected with one end of a rotational speed torque instrument through a second coupler, and the other end of the rotational speed torque instrument is connected with a connecting shaft through a third coupler.
Further, two ends of the transmission shaft are respectively arranged on the second bearing seat bracket through a first bearing seat and a second bearing seat; two ends of the connecting shaft are respectively arranged on the first bearing seat bracket through a third bearing seat and a fourth bearing seat; the first bearing seat support and the second bearing seat support are arranged on the bedplate through the front base.
Further, the rotational speed torque meter is fixed on the front base through a supporting frame.
Further, two ends of the bridge assembly are respectively arranged on the rear base through a left bracket and a right bracket, and the rear base is connected to the bedplate in a sliding manner.
Further, a first guiding flat key and a second guiding flat key are fixedly arranged at the bottom end of the rear base, and key grooves matched with the first guiding flat key and the second guiding flat key for sliding are formed in the top end face of the bedplate.
In a further scheme, a screw sleeve is fixedly arranged at the front end of the rear base, a screw is connected to the screw sleeve in a threaded manner, and a hand wheel is arranged on the screw; the hand wheel is rotated, and the rear base is pushed by the screw rod to move along the key groove on the bedplate.
Further, the screw is arranged in the middle of the bearing seat through a bearing, and the bearing seat is fixed on the bedplate through a base plate.
The two ends of the bridge assembly ensure the synchronism of the rotation speeds output by the two ends of the bridge assembly through the chain wheels and the chain transmission devices with the same speed ratio, the bridge assembly is loaded by controlling the current input into the magnetic powder brake, the loading torque value and the output rotation speed of the bridge assembly are detected through the rotation speed torque meter, and the transmission fatigue test of the bridge assembly is carried out according to the test steps set by the control system.
During the test, the two ends of the bridge assembly are fixed on the rear base through the left bracket and the right bracket respectively, the first large chain wheel and the second transmission chain wheel are arranged on the driving hub of the bridge assembly, and the first transmission chain and the second transmission chain arranged on the first small chain wheel and the second small chain wheel are hung on the second large chain wheel and the first large chain wheel respectively; then, the hand wheel is rotated to enable the rear base and the components on the rear base to move outwards along the key grooves on the bedplate, so that tensioning adjustment is carried out on the first transmission chain and the second transmission chain; and finally, fixing the rear base on the bedplate, and finishing installation. And starting the control system to develop a transmission fatigue test of the bridge assembly according to a test step set by a program.
The synchronous device is also suitable for bench test of the drive axle assembly.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the mechanical drive chain wheel device to ensure that the output of the left end and the right end of the tested bridge assembly are kept synchronous, and the electric control system does not need to synchronously control the output of the two ends of the tested bridge assembly relative to the motor loading mode, thereby simplifying the control system.
2. The magnetic powder brake is selected as the loading device, so that the requirement of loading large torque is met; meanwhile, the requirement of loading the two ends of the tested bridge assembly can be met by using one loading device. Compared with a motor loading mode, the loading device is reduced, and meanwhile, a speed increasing device is not required to be configured in a transmission chain, so that the complexity of a mechanical rack is greatly reduced.
3. The loading torque of the magnetic powder brake is realized by controlling the input current of the magnetic powder brake, and compared with a motor loading mode, the cost input of a control system is reduced by using a frequency converter to control the rotating speed of the motor. Meanwhile, after the mechanical bench is simplified, the cost of the mechanical transmission part is correspondingly reduced, so that the construction cost of the test device is greatly reduced.
Drawings
FIG. 1 is an elevation view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a rear cross-sectional view of the invention;
in the figure: 1-platen, 2-magnetic powder brake, 3.1-first coupler, 3.2-second coupler, 3.3-third coupler, 4.1-first drive chain, 4.2-second drive chain, 5.1-first bearing block, 5.2-second bearing block, 5.3-third bearing block, 5.4-fourth bearing block, 6.1-first small sprocket, 6.2-second small sprocket, 7-rotational speed torque meter, 8-connecting shaft, 9.1-first bearing block bracket, 9.2-second bearing block bracket, 10-front base, 11-support frame, 12.1-first large sprocket, 12.2-second large sprocket, 13.1-left support frame, 13.2-right support frame, 14-rear base, 15-bridge assembly, 16-screw sleeve, 17-screw, 18-backing plate, 19-bearing block, 20-hand wheel, 21.1-first guide flat key, 21.2-second guide flat key, 22-transmission shaft.
Detailed Description
As shown in fig. 1-5, a transmission fatigue test device of a bridge assembly comprises a magnetic powder brake 2 for loading the bridge assembly 15, wherein an output shaft of the magnetic powder brake 2 is sequentially connected with a transmission shaft 22, a rotational speed torque meter 7 and a connecting shaft 8; the middle of the transmission shaft 22 is fixedly sleeved with a first small sprocket 6.1, and the middle of the connecting shaft 8 is fixedly sleeved with a second small sprocket 6.2;
the driving hubs at two ends of the bridge assembly 15 are respectively provided with a second large sprocket 12.2 and a first large sprocket 12.1; the first small chain wheel 6.1 and the second large chain wheel 12.2 are connected and synchronously driven through a first transmission chain 4.1, and the second small chain wheel 6.2 and the first large chain wheel 12.1 are connected and synchronously driven through a second transmission chain 4.2.
Further, an output shaft of the magnetic powder brake 2 is connected with one end of a transmission shaft 22 through a first coupler 3.1, the other end of the transmission shaft 22 is connected with one end of a rotational speed torque meter 7 through a second coupler 3.2, and the other end of the rotational speed torque meter 7 is connected with a connecting shaft 8 through a third coupler 3.3.
Further, two ends of the transmission shaft 22 are respectively arranged on the second bearing bracket 9.2 through a first bearing seat 5.1 and a second bearing seat 5.2; two ends of the connecting shaft 8 are respectively arranged on the first bearing seat bracket 9.1 through a third bearing seat 5.3 and a fourth bearing seat 5.4; the first bearing seat support 9.1 and the second bearing seat support 9.2 are arranged on the bedplate 1 through a front base 10.
Further, the rotational speed and torque meter 7 is fixed on the front base 10 through a supporting frame 11.
Further, two ends of the bridge assembly 15 are respectively mounted on the rear base 14 through a left bracket 13.1 and a right bracket 13.2, and the rear base 14 is slidably connected to the bedplate 1.
In a further scheme, the bottom end of the rear base 14 is fixedly provided with a first guiding flat key 21.1 and a second guiding flat key 21.2, and the top end surface of the bedplate 1 is provided with a key slot which slides in a matched manner with the first guiding flat key 21.1 and the second guiding flat key 21.2.
In a further scheme, a screw sleeve 16 is fixedly arranged at the front end of the rear base 14, a screw rod 17 is connected to the screw sleeve 16 in a threaded manner, and a hand wheel 20 is arranged on the screw rod 17; the hand wheel 20 is turned, and the rear base 14 is pushed by the screw 17 to move along the key groove on the bedplate 1.
Further, the screw 17 is mounted in the middle of a bearing seat 19 through a bearing, and the bearing seat 19 is fixed on the bedplate 1 through a base plate 18.
During the test, the two ends of the bridge assembly are fixed on the rear base through the left bracket and the right bracket respectively, the first large chain wheel and the second transmission chain wheel are arranged on the driving hub of the bridge assembly, and the first transmission chain and the second transmission chain arranged on the first small chain wheel and the second small chain wheel are hung on the second large chain wheel and the first large chain wheel respectively; then, the hand wheel is rotated to enable the rear base and the components on the rear base to move outwards along the key grooves on the bedplate, so that tensioning adjustment is carried out on the first transmission chain and the second transmission chain; and finally, fixing the rear base on the bedplate, and finishing installation. And starting the control system to develop a transmission fatigue test of the bridge assembly according to a test step set by a program. The bridge assembly is loaded by controlling the current of the input magnetic powder brake, and the loading torque value and the output rotating speed of the bridge assembly are detected by a rotating speed torque meter.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical solution of the present invention in any way. The invention is subject to various changes and modifications without departing from the spirit and scope thereof, which are intended to be covered by the appended claims.
Claims (6)
1. The utility model provides a transmission fatigue test device of bridge assembly, includes magnetic powder brake (2) that carries out loading to bridge assembly (15), its characterized in that: an output shaft of the magnetic powder brake (2) is sequentially connected with a transmission shaft (22), a rotating speed torque meter (7) and a connecting shaft (8); a first small sprocket (6.1) is fixedly sleeved in the middle of the transmission shaft (22), and a second small sprocket (6.2) is fixedly sleeved in the middle of the connecting shaft (8);
the driving hubs at two ends of the bridge assembly (15) are respectively provided with a second large sprocket (12.2) and a first large sprocket (12.1); the first small chain wheel (6.1) and the second large chain wheel (12.2) are connected and synchronously driven through a first transmission chain (4.1), and the second small chain wheel (6.2) and the first large chain wheel (12.1) are connected and synchronously driven through a second transmission chain (4.2);
two ends of the bridge assembly (15) are respectively arranged on the rear base (14) through a left bracket (13.1) and a right bracket (13.2), and the rear base (14) is connected to the bedplate (1) in a sliding manner; the bottom of the rear base (14) is fixedly provided with a first guide flat key (21.1) and a second guide flat key (21.2), and a key slot matched with the first guide flat key (21.1) and the second guide flat key (21.2) for sliding is formed in the top end surface of the bedplate (1).
2. The transmission fatigue test device according to claim 1, wherein: an output shaft of the magnetic powder brake (2) is connected with one end of a transmission shaft (22) through a first coupler (3.1), the other end of the transmission shaft (22) is connected with one end of a rotating speed torque meter (7) through a second coupler (3.2), and the other end of the rotating speed torque meter (7) is connected with a connecting shaft (8) through a third coupler (3.3).
3. The transmission fatigue test device according to claim 1, wherein: two ends of the transmission shaft (22) are respectively arranged on the second bearing bracket (9.2) through a first bearing seat (5.1) and a second bearing seat (5.2); two ends of the connecting shaft (8) are respectively arranged on the first bearing seat bracket (9.1) through a third bearing seat (5.3) and a fourth bearing seat (5.4); the first bearing seat support (9.1) and the second bearing seat support (9.2) are arranged on the bedplate (1) through the front base (10).
4. The transmission fatigue test device according to claim 1, wherein: the rotating speed torque meter (7) is fixed on the front base (10) through a supporting frame (11).
5. The transmission fatigue test device according to claim 1, wherein: the front end of the rear base (14) is fixedly provided with a screw sleeve (16), the screw sleeve (16) is connected with a screw rod (17) in a threaded manner, and a hand wheel (20) is arranged on the screw rod (17); the hand wheel (20) is rotated, and the rear base (14) is pushed by the screw (17) to move along the key groove on the bedplate (1).
6. The transmission fatigue test device according to claim 5, wherein: the screw (17) is arranged in the middle of the bearing seat (19), and the bearing seat (19) is fixed on the bedplate (1) through a base plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097401.7A CN106679975B (en) | 2017-02-22 | 2017-02-22 | Transmission fatigue test device of bridge assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710097401.7A CN106679975B (en) | 2017-02-22 | 2017-02-22 | Transmission fatigue test device of bridge assembly |
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| Publication Number | Publication Date |
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| CN106679975A CN106679975A (en) | 2017-05-17 |
| CN106679975B true CN106679975B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710097401.7A Active CN106679975B (en) | 2017-02-22 | 2017-02-22 | Transmission fatigue test device of bridge assembly |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107219074B (en) * | 2017-06-06 | 2019-12-10 | 北京航空航天大学 | Transmission rigidity testing equipment for space large-torque rope transmission system |
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| KR101583703B1 (en) * | 2014-08-08 | 2016-01-08 | 주식회사 해성굿쓰리 | Reducer endurance test apparatus |
| CN105319068A (en) * | 2015-12-07 | 2016-02-10 | 长春机械科学研究院有限公司 | Testing machine for fatigue life of automobile hub bearing |
| CN105527095A (en) * | 2015-12-29 | 2016-04-27 | 太仓椿盟链传动有限公司 | General adjustable chain detecting device |
| CN205607638U (en) * | 2016-05-11 | 2016-09-28 | 余金榕 | Drive axle assembly detection device that operates |
| CN206573288U (en) * | 2017-02-22 | 2017-10-20 | 安徽合力股份有限公司 | A kind of transmission fatigue experimental device of electric bridge assembly |
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2017
- 2017-02-22 CN CN201710097401.7A patent/CN106679975B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201749027U (en) * | 2010-06-22 | 2011-02-16 | 山东临工工程机械有限公司 | Drive axle reliability test bed |
| CN201903446U (en) * | 2010-12-24 | 2011-07-20 | 邵春平 | Endurance test stand for automobile transmission assembly |
| CN202083562U (en) * | 2011-03-21 | 2011-12-21 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Running test device for rear axle assembly of automobile |
| CN102331347A (en) * | 2011-08-04 | 2012-01-25 | 诸城市义和车桥有限公司 | Drive axle load test bench |
| CN103616107A (en) * | 2013-12-13 | 2014-03-05 | 广西大学 | Varying-load varying-inertia motor mechanical performance testing device |
| KR101583703B1 (en) * | 2014-08-08 | 2016-01-08 | 주식회사 해성굿쓰리 | Reducer endurance test apparatus |
| CN204405320U (en) * | 2014-12-20 | 2015-06-17 | 重庆凯特动力科技有限公司 | For the simple and easy long duration test compound table of automobile differential |
| CN105319068A (en) * | 2015-12-07 | 2016-02-10 | 长春机械科学研究院有限公司 | Testing machine for fatigue life of automobile hub bearing |
| CN105527095A (en) * | 2015-12-29 | 2016-04-27 | 太仓椿盟链传动有限公司 | General adjustable chain detecting device |
| CN205607638U (en) * | 2016-05-11 | 2016-09-28 | 余金榕 | Drive axle assembly detection device that operates |
| CN206573288U (en) * | 2017-02-22 | 2017-10-20 | 安徽合力股份有限公司 | A kind of transmission fatigue experimental device of electric bridge assembly |
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