CN111982537A - Method and device for detecting parking mechanism of automobile driving unit - Google Patents
Method and device for detecting parking mechanism of automobile driving unit Download PDFInfo
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- CN111982537A CN111982537A CN202010862516.2A CN202010862516A CN111982537A CN 111982537 A CN111982537 A CN 111982537A CN 202010862516 A CN202010862516 A CN 202010862516A CN 111982537 A CN111982537 A CN 111982537A
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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
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Abstract
The invention relates to the technical field of automobile detection devices, in particular to a method and a device for detecting a parking mechanism of an automobile driving unit. A method for detecting a parking mechanism of an automobile driving unit comprises a rack for detection, wherein the rack comprises four steps of docking a parking test unit and a tested unit, abusing parking test, parking on an upper slope and parking on a lower slope and detecting a differential mechanism; the utility model provides a car drive unit parking mechanism detection device, is including the rack that is used for the test, be provided with on the rack and surveyed the product, it is connected with input/output dynamometer transmission system to be surveyed the product, it has the parking test unit to be dialled the axle butt joint by the parking of surveying the product, the parking test unit includes servo motor, support, shaft coupling, torque sensor, pivot, bearing, pivot supporting seat, ripple cover shaft coupling, driving shaft cover, checkpost, flexible driving sleeve and spring. The invention has the advantages that: the labor force is reduced, the working efficiency is greatly improved, and the automatic production requirement is met.
Description
Technical Field
The invention relates to the technical field of automobile detection devices, in particular to a method and a device for detecting a parking mechanism of an automobile driving unit.
Background
The parking mechanism is one of important structures in a vehicle transmission system, and the mainstream vehicle automatic transmission and an electric drive transmission unit (EDU) are integrated with the parking mechanism, namely, the parking mechanism is manually operated or automatically operated. The parking gear + pawl mechanism is a mainstream and mature mechanism. How to ensure the reliable work of the parking mechanism is tested in the offline detection process of the assembly of related parts except for the full analysis and the full experiment in the design verification process so as to ensure the correct assembly of the related parts and the standard reaching of working parameters. The general requirements for the parking mechanism are 1) under the condition of low-speed running (generally, the speed of the vehicle is less than 5km/h), the vehicle can be forcibly parked without damaging related mechanisms; 2) under the condition of certain load (such as slope parking), the parking mechanism can be normally separated with smaller driving torque without being blocked; 3) when the automobile runs at a high speed, misoperation parking (abuse) cannot be finished, so that danger or damage to a parking mechanism is avoided. Suitable detection methods and devices are required to ensure that the detection requirements are met. The detection requirement is usually completed under the assistance of related functions of an offline detection bench (EOL bench) in an offline comprehensive detection process of related components (such as an automobile automatic transmission, an electric drive unit and the like). Different detection methods and associated test devices result from different understandings of the detection criteria. In an EOL rack with a plurality of related products, a manual cable operation mode is provided, when other function tests of the rack are finished, the inertial rotating speed of a driving system is utilized, a transmission parking mechanism is manually operated, and parking detection is completed through hand feeling of an operator, auditory judgment and the like.
The detection method mainly based on manual judgment lacks standardization, the detection result and reliability of the detection method depend on subjective judgment of an operator to a great extent, and the test result cannot be well reproduced. And the detection specification of quantification uniformity is lacked, and the result is not favorable for quantification. Meanwhile, unmanned automatic production cannot be realized.
Disclosure of Invention
The present invention provides a method and a device for detecting a parking mechanism of a vehicle driving unit, so as to overcome the above-mentioned disadvantages of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for detecting a parking mechanism of an automobile driving unit comprises a rack for detection, and comprises four steps of docking a parking test unit and a tested unit, abusing parking test, parking on an upper slope and parking on a lower slope and detecting a differential mechanism:
the parking test unit is in butt joint with the tested unit, so that the parking test unit is in flexible butt joint with the product parking mechanism shifting shaft, when in butt joint, a preset angle reached by a servo motor of the parking test unit corresponds to a fixed gear (such as P gear) of a product, the whole unit is in butt joint with the product directly under the driving action of the sliding table, and the butted telescopic driving sleeve is a flat hole driving sleeve and can be directly sleeved on a product parking mechanism driving shaft;
abusive parking test, inputting the rest speed of the bench to the dynamometer to be disconnected or not when inputting the dynamometer to the dynamometer in the last step of test, setting the bench to be slightly higher than/h of the maximum allowable parking rotating speed (defined by a product), and limiting the torque value to be a safety value; then, controlling a parking test unit by a program, and performing parking operation on a product, wherein a servo motor of the parking unit is in a torque mode; in the process, if the product is qualified, a 'Da' sound can be heard, and the parking cannot be finished to be a qualified product; then, setting the bench output dynamometer to be uniformly decelerated to reach a certain speed, wherein the parking operation of qualified products can be suddenly finished, and the rotating speed of the bench output dynamometer is instantly reduced to 0; during the period, a parking curve is recorded through a program, the maximum rotating speed of the output dynamometer at the moment before the speed is reduced to 0 is found, the rotating speed corresponds to the maximum speed of the product which allows parking, and data or a curve can be recorded according to requirements;
the method comprises the following steps of (1) carrying out uphill and downhill parking test, and setting the torque of a rack output dynamometer to reach a certain torque to represent the torque generated by an automobile on a slope with a set angle for a parking mechanism, and limiting the highest rotating speed of the rack output dynamometer (the highest speed allowed for parking is set when the automobile is on the way); then the parking test unit releases parking with a limited torque, and the maximum reading of a torque sensor of the parking test mechanism is smaller than the allowed maximum releasing torque; the process can be operated in forward and reverse directions for simulating uphill parking or downhill parking;
differential mechanism detects, because through preceding big torque impact, forms great impact to differential mechanism part, assembles badly or relevant defective part, will lead to differential mechanism bad operation, consequently to after parking test is accomplished, examines differential mechanism, differential mechanism detection's method is: one end (such as the left end) of the output dynamometer is set with a small torque (such as 30Nm), the rotating speed is 0, the other end is set with a small rotating speed (such as 30RPM) for driving, if the rotating speed is not zero and the torque is smaller than the other end, the product is qualified, otherwise, the product is judged to be unqualified.
Preferably, the unit to be tested comprises a parking mechanism automobile driving unit, an automatic transmission or a hybrid transmission and an Electric Drive Unit (EDU).
The utility model provides a car drive unit parking mechanism detection device, includes the rack that is used for the test, be provided with the product of being surveyed on the rack, the product of being surveyed is connected with input/output dynamometer machine transmission system, the parking of the product of being surveyed is dialled the axle and is docked and have the parking test unit, the parking test unit includes servo motor, support, shaft coupling, torque sensor, pivot, bearing, pivot supporting seat, ripple cover shaft coupling, driving axle sleeve, checkpost, flexible driving sleeve and spring, the support suit is in on the servo motor, the shaft coupling is installed servo motor's axis of rotation department, and the laminating the one end of support sets up, the torque sensor suit is in the outer end of shaft coupling, flexible driving sleeve passes through the fixed end that sets up at servo motor of bearing, the pivot sets up outside the bearing, the bearing sets up on the bearing supporting seat, the bearing supporting seat is arranged outside the driving shaft sleeve, the corrugated sleeve coupler is arranged in the bearing supporting seat box and between the driving shaft sleeves, the driving shaft sleeves are sleeved outside the telescopic driving sleeve, the spring is arranged in the telescopic driving sleeve, and the clamp is arranged at the end of the telescopic driving sleeve.
Preferably, a torque sensor is further arranged between the tested product and the input-output dynamometer transmission system.
The invention has the beneficial effects that: the parking test unit used in cooperation carries out batch automatic detection, improves the reliability and precision of detection, reduces manual labor force, greatly improves the working efficiency, fully meets the detection requirement of the automobile parking mechanism, and is suitable for automatic production requirements.
Drawings
FIG. 1 is a schematic structural diagram of a parking test unit of a parking mechanism detection device of an automobile driving unit according to the present invention;
FIG. 2 is a schematic view of a rack of a parking mechanism detecting device of a vehicle driving unit according to the present invention;
in the figure: 1. a servo motor; 2. a support; 3. a coupling; 4. a torque sensor; 5. a rotating shaft; 6. a bearing; 7. a rotating shaft supporting seat; 8. a bellows bush coupling; 9. a drive shaft sleeve; 10. a clip; 11. a telescopic driving sleeve; 12. a spring; 13. a product to be tested; 14. an input output dynamometer transmission system; 15. parking shifting shafts; 16. a parking test unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 2, the method for detecting the parking mechanism of the automobile driving unit comprises a rack for detection, and comprises four steps of docking a parking testing unit with a tested unit, carrying out an abuse parking test, carrying out an uphill and downhill parking test and detecting a differential mechanism:
the parking test unit is in butt joint with the tested unit, so that the parking test unit is in flexible butt joint with the product parking mechanism shifting shaft, when in butt joint, a preset angle reached by a servo motor of the parking test unit corresponds to a fixed gear (such as P gear) of a product, the whole unit is in butt joint with the product directly under the driving action of the sliding table, and the butted telescopic driving sleeve is a flat hole driving sleeve and can be directly sleeved on a product parking mechanism driving shaft;
abusive parking test, inputting the rest speed of the bench to the dynamometer to be disconnected or not when inputting the dynamometer to the dynamometer in the last step of test, setting the bench to be slightly higher than/h of the maximum allowable parking rotating speed (defined by a product), and limiting the torque value to be a safety value; then, controlling a parking test unit by a program, and performing parking operation on a product, wherein a servo motor of the parking unit is in a torque mode; in the process, if the product is qualified, a 'Da' sound can be heard, and the parking cannot be finished to be a qualified product; then, setting the bench output dynamometer to be uniformly decelerated to reach a certain speed, wherein the parking operation of qualified products can be suddenly finished, and the rotating speed of the bench output dynamometer is instantly reduced to 0; during the period, a parking curve is recorded through a program, the maximum rotating speed of the output dynamometer at the moment before the speed is reduced to 0 is found, the rotating speed corresponds to the maximum speed of the product which allows parking, and data or a curve can be recorded according to requirements;
the method comprises the following steps of (1) carrying out uphill and downhill parking test, and setting the torque of a rack output dynamometer to reach a certain torque to represent the torque generated by an automobile on a slope with a set angle for a parking mechanism, and limiting the highest rotating speed of the rack output dynamometer (the highest speed allowed for parking is set when the automobile is on the way); then the parking test unit releases parking with a limited torque, and the maximum reading of a torque sensor of the parking test mechanism is smaller than the allowed maximum releasing torque; the process can be operated in forward and reverse directions for simulating uphill parking or downhill parking;
differential mechanism detects, because through preceding big torque impact, forms great impact to differential mechanism part, assembles badly or relevant defective part, will lead to differential mechanism bad operation, consequently to after parking test is accomplished, examines differential mechanism, differential mechanism detection's method is: one end (such as the left end) of the output dynamometer is set with a small torque (such as 30Nm), the rotating speed is 0, the other end is set with a small rotating speed (such as 30RPM) for driving, if the rotating speed is not zero and the torque is smaller than the other end, the product is qualified, otherwise, the product is judged to be unqualified.
The unit to be tested comprises a parking mechanism automobile driving unit, an automatic transmission or a hybrid power transmission and a pure Electric Driving Unit (EDU).
Referring to fig. 1, a car drive unit parking mechanism detection device, includes the rack that is used for the test, be provided with on the rack and surveyed product 13, it is connected with input/output dynamometer transmission system 14 to be surveyed product 13's parking is dialled axle 15 and is docked parking test unit 16, parking test unit 16 includes servo motor 1, support 2, shaft coupling 3, torque sensor 4, pivot 5, bearing 6, pivot supporting seat 7, ripple cover shaft coupling 8, driving shaft sleeve 9, checkpost 10, flexible driving sleeve 11 and spring 12, support 2 suit is in on servo motor 1, shaft coupling 3 installs in servo motor 1's axis of rotation department, and the laminating the one end setting of support 2, torque sensor 4 suit is in the outer end of shaft coupling 3, flexible driving sleeve 11 passes through the fixed end that sets up at servo motor 1 of bearing 6, the utility model discloses a flexible drive sleeve, including pivot 5, bearing 6, bearing support seat 7 sets up outside bearing 6, ripple cover shaft coupling 8 sets up at bearing support seat 7 with between the drive shaft cover 9, 9 suits of drive shaft cover are in outside flexible drive sleeve 11, spring 12 sets up in flexible drive sleeve 11, checkpost 10 sets up the end department of flexible drive sleeve 11.
A torque sensor is arranged between the tested product 13 and the input-output dynamometer transmission system 14
The invention has the beneficial effects that: the parking test unit used in cooperation carries out batch automatic detection, improves the reliability and precision of detection, reduces manual labor force, greatly improves the working efficiency, fully meets the detection requirement of the automobile parking mechanism, and is suitable for automatic production requirements.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A detection method for a parking mechanism of an automobile driving unit comprises a rack for detection, and is characterized in that: the method comprises four steps of docking a parking test unit with a tested unit, abusing parking test, up-slope and down-slope parking test and detecting a differential mechanism:
the parking test unit is in butt joint with the tested unit, so that the parking test unit is in flexible butt joint with the product parking mechanism shifting shaft, when in butt joint, a preset angle reached by a servo motor of the parking test unit corresponds to a fixed gear (such as P gear) of a product, the whole unit is in butt joint with the product directly under the driving action of the sliding table, and the butted telescopic driving sleeve is a flat hole driving sleeve and can be directly sleeved on a product parking mechanism driving shaft;
abusive parking test, inputting the rest speed of the bench to the dynamometer to be disconnected or not when inputting the dynamometer to the dynamometer in the last step of test, setting the bench to be slightly higher than/h of the maximum allowable parking rotating speed (defined by a product), and limiting the torque value to be a safety value; then, controlling a parking test unit by a program, and performing parking operation on a product, wherein a servo motor of the parking unit is in a torque mode; in the process, if the product is qualified, a 'Da' sound can be heard, and the parking cannot be finished to be a qualified product; then, setting the bench output dynamometer to be uniformly decelerated to reach a certain speed, wherein the parking operation of qualified products can be suddenly finished, and the rotating speed of the bench output dynamometer is instantly reduced to 0; during the period, a parking curve is recorded through a program, the maximum rotating speed of the output dynamometer at the moment before the speed is reduced to 0 is found, the rotating speed corresponds to the maximum speed of the product which allows parking, and data or a curve can be recorded according to requirements;
the method comprises the following steps of (1) carrying out uphill and downhill parking test, and setting the torque of a rack output dynamometer to reach a certain torque to represent the torque generated by an automobile on a slope with a set angle for a parking mechanism, and limiting the highest rotating speed of the rack output dynamometer (the highest speed allowed for parking is set when the automobile is on the way); then the parking test unit releases parking with a limited torque, and the maximum reading of a torque sensor of the parking test mechanism is smaller than the allowed maximum releasing torque; the process can be operated in forward and reverse directions for simulating uphill parking or downhill parking;
differential mechanism detects, because through preceding big torque impact, forms great impact to differential mechanism part, assembles badly or relevant defective part, will lead to differential mechanism bad operation, consequently to after parking test is accomplished, examines differential mechanism, differential mechanism detection's method is: one end (such as the left end) of the output dynamometer is set with a small torque (such as 30Nm), the rotating speed is 0, the other end is set with a small rotating speed (such as 30RPM) for driving, if the rotating speed is not zero and the torque is smaller than the other end, the product is qualified, otherwise, the product is judged to be unqualified.
2. The method for detecting the parking mechanism of the vehicle driving unit according to claim 1, characterized in that: the unit to be tested comprises a parking mechanism automobile driving unit, an automatic transmission or a hybrid power transmission and a pure Electric Driving Unit (EDU).
3. A detection device for a parking mechanism of an automobile driving unit comprises a rack for testing, and is characterized in that: the parking test device is characterized in that a tested product (13) is arranged on the rack, the tested product (13) is connected with an input and output dynamometer transmission system (14), a parking shifting shaft (15) of the tested product (13) is butted with a parking test unit (16), the parking test unit (16) comprises a servo motor (1), a support (2), a shaft coupler (3), a torque sensor (4), a rotating shaft (5), a bearing (6), a rotating shaft supporting seat (7), a corrugated sleeve coupler (8), a driving shaft sleeve (9), a clamp (10), a telescopic driving sleeve (11) and a spring (12), the support (2) is sleeved on the servo motor (1), the shaft coupler (3) is arranged at the rotating shaft of the servo motor (1) and is attached to one end of the support (2), the torque sensor (4) is sleeved at the outer end of the shaft coupler (3), flexible driving sleeve (11) is through the fixed end that sets up in servo motor (1) of bearing (6), pivot (5) set up outside bearing (6), bearing (6) set up on bearing support seat (7), bearing support seat (7) set up outside driving shaft cover (9), ripple cover shaft coupling (8) set up bearing support seat (7) with between driving shaft cover (9), driving shaft cover (9) suit is in outside flexible driving sleeve (11), spring (12) set up in flexible driving sleeve (11), checkpost (10) set up the end department of flexible driving sleeve (11).
4. The parking mechanism detecting device for a vehicle driving unit according to claim 3, characterized in that: and a torque sensor is also arranged between the tested product (13) and the input-output dynamometer transmission system (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010862516.2A CN111982537A (en) | 2020-08-25 | 2020-08-25 | Method and device for detecting parking mechanism of automobile driving unit |
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| CN202010862516.2A CN111982537A (en) | 2020-08-25 | 2020-08-25 | Method and device for detecting parking mechanism of automobile driving unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820127A (en) * | 2021-09-22 | 2021-12-21 | 哈尔滨东安汽车发动机制造有限公司 | Method for testing reliability of parking mechanism of automatic transmission |
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| CN102868250A (en) * | 2012-08-30 | 2013-01-09 | 宁波罗特电器有限公司 | Fixing device of telescopic rotary motor |
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