CN112326266B - Hub unit positioning tool and rack testing method - Google Patents
Hub unit positioning tool and rack testing method Download PDFInfo
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- CN112326266B CN112326266B CN202011206132.1A CN202011206132A CN112326266B CN 112326266 B CN112326266 B CN 112326266B CN 202011206132 A CN202011206132 A CN 202011206132A CN 112326266 B CN112326266 B CN 112326266B
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- wheel speed
- wheel
- hub
- speed sensor
- vehicle
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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Abstract
The invention discloses a hub unit positioning tool and a rack test method, wherein the positioning tool is used for the rack test of two driving hub test tables; the hub unit positioning tool comprises a positioning piece, a mounting bolt and a mounting nut; the positioning piece is arranged on a driving shaft of a vehicle to be tested through the mounting bolt and the mounting nut; the positioning piece is provided with a mounting bracket; the mounting bracket is connected with a wheel speed sensor, the wheel speed sensor is connected with a controller of the vehicle, and the wheel speed sensor is connected with a pin for inputting a rotating speed signal of the non-driving wheel, so that the wheel speed sensor is simulated into the rotating speed signal of the non-driving wheel and then is input into the controller of the vehicle. The invention can prevent the problem that the test process cannot be accelerated.
Description
Technical Field
The invention relates to the technical field of automobile testing, in particular to a hub unit positioning tool and a rack testing method.
Background
At present, the widely applied automobile rotating hub test bed has two types of driving, namely two-wheel driving and four-wheel driving, and the four-wheel driving cost is relatively high, so that the two-wheel driving rotating hub is still applied in a large range. In the actual test process, if only a two-wheel driving mode is adopted, when the front wheel of the automobile rotates and the rear wheel of the automobile is static, the ECU (engine control unit) judges that the wheel speed sensor of the rear wheel has faults, the automobile cannot accelerate, and related tests cannot be carried out.
In order to solve the problems that the vehicle cannot be accelerated and the test cannot be normally carried out, the rear hub unit and the wheel speed sensor are arranged on the front wheel by manufacturing the rear hub unit tool, so that the false signal of the rotating speed of the rear wheel is simulated.
Disclosure of Invention
The invention aims to provide a hub unit positioning tool and a rack testing method, which are used for solving the defects in the prior art and solving the problem that a test vehicle cannot be accelerated on a two-drive rotating hub test bed.
The invention provides a hub unit positioning tool, wherein the positioning tool is used for bench test of two driving hub test beds;
the hub unit positioning tool comprises a positioning piece, a mounting bolt and a mounting nut;
the positioning piece is arranged on a driving shaft of a vehicle to be tested through the mounting bolt and the mounting nut; the positioning piece is provided with a mounting bracket; the mounting bracket is connected with a wheel speed sensor, the wheel speed sensor is connected with a controller of the vehicle, and the wheel speed sensor is connected with a pin for inputting a rotating speed signal of the non-driving wheel, so that the wheel speed sensor is simulated into the rotating speed signal of the non-driving wheel and then is input into the controller of the vehicle.
The hub unit positioning tool further comprises a hub bearing magnetic ring, wherein the hub bearing magnetic ring is arranged on a driving shaft of a vehicle to be tested;
the detecting end of the wheel speed sensor faces the hub bearing magnetic ring, and the detecting end of the wheel speed sensor is arranged at a set distance from the hub bearing magnetic ring.
The hub unit positioning tool as described above, wherein optionally, the set distance is 0.5 to 1 mm.
The wheel hub unit positioning tool as described above, optionally, the number of the wheel speed sensors is two, and the two wheel speed sensors are respectively used for inputting wheel speed signals to pins on the controller, which are used for connecting with the wheel speed sensors on the non-driving wheels.
The invention also provides a rack test method, which is used for the two-drive rotating hub test stand; the method comprises the following steps of,
s1, detaching a hub on one driving wheel of the vehicle to be tested;
s2, mounting the hub unit positioning tool on a corresponding hub, and sequentially mounting a brake disc and a rim;
s3, connecting the wheel speed sensor on the positioning tool to a controller of the vehicle to be tested through a lead;
and S4, driving the driving wheel of the vehicle to be tested to the rotating hub test bed and testing.
The bench test method as described above, wherein, optionally, in step S3, the pins of the controller of the vehicle to be tested for receiving the non-driving wheel are connected to the wheel speed sensor to simulate the rotation speed signal of the non-driving wheel through the wheel speed sensor.
Compared with the prior art, the invention has the advantages that the positioning tool is arranged on the driving wheel, the wheel speed sensor is additionally arranged, the additionally arranged wheel speed sensor is used for detecting the rotating speed signal of the driving wheel and outputting the rotating speed signal to the controller of the vehicle to be tested as the rotating speed signal of the non-driving wheel, so that the problem that the acceleration cannot be realized because the controller cannot receive the rotating speed signal of the non-driving wheel in the testing process can be prevented.
Drawings
FIG. 1 is a schematic structural view of a hub unit positioning tool according to the present invention;
fig. 2 is a flow chart of the steps of the bench test method proposed by the present invention.
Description of reference numerals: 1-positioning piece, 2-mounting bracket, 3-wheel speed sensor and 4-wheel hub bearing magnetic ring.
Detailed Description
The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
Referring to fig. 1, the invention provides a hub unit positioning tool, wherein the positioning tool is used for bench testing of two driving hub test benches.
Specifically, the hub unit positioning tool comprises a positioning piece 1, a mounting bolt and a mounting nut; the spacer 1 is intended to be mounted at the hub of a drive wheel. In specific implementation, the mounting bolts are lengthened bolts, and are longer than the hub bolts, and can be lengthened mounting bolts; the mounting nut is a lengthened nut, is longer than a hub nut, and is a screw nut.
More specifically, the positioning member 1 is mounted on a driving shaft of a vehicle to be tested through the mounting bolt and the mounting nut; the positioning piece 1 is provided with a mounting bracket 2; the mounting bracket 2 is connected with a wheel speed sensor 3, the wheel speed sensor 3 is connected with a controller of the vehicle, and the wheel speed sensor 3 is connected with a pin of the controller for inputting a rotating speed signal of a non-driving wheel, so that the wheel speed sensor 3 is simulated into the rotating speed signal of the non-driving wheel and is input into the controller of the vehicle.
When the wheel hub unit is used, original wheel hub bolts are detached and replaced by long bolts, then the wheel hub unit is assembled, a brake disc and a wheel rim are assembled, and the wheel rim is locked by fastening nuts. The signal wire of the wheel speed sensor is led out and connected with a connector of the rear wheel speed sensor on the hub unit tool through a wire, so that the acquisition of the wheel speed signal of the non-driving wheel is realized, and the problem that the acceleration cannot be realized in the testing process can be solved through experimental testing.
Therefore, the vehicle can be tested only by using the two-wheel-drive rotating hub test bed, for example, the driving range test of the electric vehicle and the like can be carried out, and the normal acceleration of the vehicle in the test process can be ensured; during testing, a rotating speed signal of the driving wheel is acquired by a wheel speed sensor on the driving wheel and is input to the controller as the rotating speed signal of the driving wheel, namely, the signal acquired by the original driving wheel rotating speed sensor is input to the controller as the rotating speed signal of the driving wheel; a signal detected by a wheel speed sensor 3 mounted on the mounting bracket 2 is input to the controller as a rotation speed signal of the non-driving wheel. Therefore, the problem that the non-driving wheel cannot accelerate due to the fact that the rotating speed of the non-driving wheel is 0 in the test process is solved.
As a better implementation mode, the test device further comprises a hub bearing magnetic ring 4, wherein the hub bearing magnetic ring 4 is installed on a driving shaft of a vehicle to be tested; specifically, the wheel speed sensor is of an electromagnetic type, that is, the measurement of the rotating speed is realized through the relative rotation between the wheel speed sensor 3 and the hub bearing magnetic ring 4. The detecting end of the wheel speed sensor 3 faces the hub bearing magnetic ring 4, and the detecting end of the wheel speed sensor 3 is arranged at a set distance from the hub bearing magnetic ring 4. More specifically, the set distance is 0.5 to 1 mm. In particular, the positioning member 1 is similar to a hub unit switch.
As a preferred implementation manner, the number of the wheel speed sensors 3 is two, and the two wheel speed sensors 3 are respectively used for inputting wheel speed signals to pins on the controller for connecting with the wheel speed sensors 3 on the non-driving wheels.
Referring to fig. 2, the invention further provides a bench test method, wherein the test method is used for two driving hub test benches;
the method comprises the following steps of,
s1, detaching a hub on one driving wheel of the vehicle to be tested; in specific implementation, after the hub is disassembled, the hub bolts are replaced by the lengthened bolts, and the hub nuts are replaced by the lengthened conical surface nuts for convenient disassembly.
S2, the hub unit positioning tool disclosed by the invention is installed on a corresponding hub, and a brake disc and a rim are sequentially installed. During implementation, in order to ensure that the wheel speed sensor 3 can normally acquire signals, a relative rotation relationship exists between the wheel speed sensor 3 and the hub bearing magnetic ring 4. Namely, one of the wheel speed sensor 3 and the hub bearing magnetic ring 4 rotates with the wheel, and the other is fixed. In actual use, the wheel speed sensor 3 can be stationary, and the hub bearing magnetic ring 4 rotates; or the wheel hub bearing magnetic ring 4 can be fixed, and the wheel speed sensor 3 rotates along with the wheel. S3, connecting the wheel speed sensor 3 on the positioning tool to a controller of the vehicle to be tested through a lead; in this step, a pin on the controller of the vehicle to be tested for receiving the non-driving wheel is connected to the wheel speed sensor 3, so as to simulate a rotating speed signal of the non-driving wheel through the wheel speed sensor 3. And S4, driving the driving wheel of the vehicle to be tested to the rotating hub test bed and testing. Thus, the problem that the test vehicle cannot receive the rear wheel rotating speed signal and cannot accelerate can be prevented.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.
Claims (4)
1. The utility model provides a hub unit location frock which characterized in that: the positioning tool is used for the bench test of the two-drive rotating hub test bed;
the hub unit positioning tool comprises a positioning piece (1), a mounting bolt, a mounting nut and a hub bearing magnetic ring (4);
the positioning piece (1) is arranged on a driving shaft of a vehicle to be tested through the mounting bolt and the mounting nut; the positioning piece (1) is provided with a mounting bracket (2); the mounting bracket (2) is connected with a wheel speed sensor (3), the wheel speed sensor (3) is connected with a controller of a vehicle, and the wheel speed sensor (3) is connected with a pin of the controller for inputting a rotating speed signal of a non-driving wheel, so that the wheel speed sensor (3) is simulated into the rotating speed signal of the non-driving wheel and is input into the controller of the vehicle;
the hub bearing magnetic ring (4) is arranged on a driving shaft of a vehicle to be tested;
the detection end of the wheel speed sensor (3) faces the hub bearing magnetic ring (4), and the detection end of the wheel speed sensor (3) and the hub bearing magnetic ring (4) are arranged according to a set distance;
the bench test described above comprises the following steps,
s1, detaching a hub on one driving wheel of the vehicle to be tested;
s2, mounting the hub unit positioning tool on a corresponding hub, and sequentially mounting a brake disc and a rim;
s3, connecting a wheel speed sensor (3) on the positioning tool to a controller of a vehicle to be tested through a lead;
and S4, driving the driving wheel of the vehicle to be tested to the rotating hub test bed and testing.
2. The hub unit positioning tool according to claim 1, wherein: the set distance is 0.5 to 1 mm.
3. The hub unit positioning tool according to claim 2, wherein: the number of the wheel speed sensors (3) is two, and the two wheel speed sensors (3) are respectively used for inputting wheel speed signals to pins which are used for being connected with the wheel speed sensors (3) on the non-driving wheels on the controller.
4. The hub unit positioning tool according to claim 1, wherein: in step S3, a pin on a controller of the vehicle to be tested for receiving the non-driving wheel is connected to the wheel speed sensor (3) to simulate a rotation speed signal of the non-driving wheel through the wheel speed sensor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011206132.1A CN112326266B (en) | 2020-11-02 | 2020-11-02 | Hub unit positioning tool and rack testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011206132.1A CN112326266B (en) | 2020-11-02 | 2020-11-02 | Hub unit positioning tool and rack testing method |
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| CN112326266A CN112326266A (en) | 2021-02-05 |
| CN112326266B true CN112326266B (en) | 2022-02-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0343058A1 (en) * | 1988-05-19 | 1989-11-23 | Skf France | Hub assembly of a non-driven vehicle wheel equipped with an emitter and receiver for measuring the angular speed of the wheel |
| CN2857020Y (en) * | 2005-12-27 | 2007-01-10 | 重庆长安汽车股份有限公司 | Active rotation rate senser of automobile non-driving wheel |
| CN205919972U (en) * | 2016-08-26 | 2017-02-01 | 哈尔滨东安汽车发动机制造有限公司 | Whole car ESP shield assembly of system of rotary drum test |
| CN208801852U (en) * | 2018-08-03 | 2019-04-30 | 东风汽车集团有限公司 | A kind of wheel motor drive device |
| CN111337269A (en) * | 2020-03-25 | 2020-06-26 | 宁波赛福汽车制动有限公司 | Wheel speed signal test and fault simulation test bed |
-
2020
- 2020-11-02 CN CN202011206132.1A patent/CN112326266B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0343058A1 (en) * | 1988-05-19 | 1989-11-23 | Skf France | Hub assembly of a non-driven vehicle wheel equipped with an emitter and receiver for measuring the angular speed of the wheel |
| CN2857020Y (en) * | 2005-12-27 | 2007-01-10 | 重庆长安汽车股份有限公司 | Active rotation rate senser of automobile non-driving wheel |
| CN205919972U (en) * | 2016-08-26 | 2017-02-01 | 哈尔滨东安汽车发动机制造有限公司 | Whole car ESP shield assembly of system of rotary drum test |
| CN208801852U (en) * | 2018-08-03 | 2019-04-30 | 东风汽车集团有限公司 | A kind of wheel motor drive device |
| CN111337269A (en) * | 2020-03-25 | 2020-06-26 | 宁波赛福汽车制动有限公司 | Wheel speed signal test and fault simulation test bed |
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| CN112326266A (en) | 2021-02-05 |
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