CN107643460B - Automatic transmission gear shift switch fault detection device and detection method thereof - Google Patents
Automatic transmission gear shift switch fault detection device and detection method thereof Download PDFInfo
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- CN107643460B CN107643460B CN201711112027.XA CN201711112027A CN107643460B CN 107643460 B CN107643460 B CN 107643460B CN 201711112027 A CN201711112027 A CN 201711112027A CN 107643460 B CN107643460 B CN 107643460B
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- gear
- gear shift
- shift lever
- shaft core
- switch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention relates to a gear shift switch fault detection device of an automatic transmission, which comprises a gear shift lever driving device, a gear shift switch, a gear shift lever and a controller, wherein the gear shift lever driving device is connected with a motor shaft core, a gear shift lever meshing groove is formed in the bottom of the gear shift lever driving device, the gear shift lever on the gear shift switch is meshed with the gear shift lever meshing groove, and the gear shift switch is electrically connected with the controller through a connecting terminal plug. The invention adopts the gear shift lever driving device with simple structure and low cost to replace a vehicle-mounted gear shift operating mechanism, the gear shift driving device is arranged on a motor shaft core, the gear shift lever connected with the gear shift switch is driven according to the gear shift angle requirement to realize gear shift, and meanwhile, the PLC is utilized to collect and detect and judge the state signals of the gear shift switch, so that the invention has the characteristics of accurate and visual fault judgment, high detection efficiency, good portability and convenient synchronization with other test items.
Description
Technical Field
The invention belongs to a fault detection device of an automatic transmission for a vehicle, and particularly relates to a fault detection device of a gear shift switch of the automatic transmission and a detection method thereof.
Background
The automatic transmission has 4 gears P/R/N/D, and the gear switch has a mechanical structure and has 7 contacts. Because of the manufacturing level difference, the gear switch with interphase short-circuit fault in the actual assembly process is assembled on the speed changer and flows out of the manufacturing factory, and faults occur when the whole vehicle is mounted, so that off-factory repair and traffic accident are easily caused. At present, the short circuit detection process of the shift switch of the domestic transmission is mostly carried out by using an off-line manual electric instrument, thereby wasting manpower and time.
Disclosure of Invention
The invention provides a special detection tool and a method according to the structural characteristics of a gear shift switch of an automatic transmission, and realizes detection of a short circuit fault of a gear shift switch circuit by means of PLC control technology, a man-machine interface and the like.
The invention adopts the technical scheme that: the gear shifting switch fault detection device of the automatic transmission comprises a gear shifting lever driving device, a gear shifting switch, a gear shifting lever and a controller, wherein the gear shifting lever driving device is connected with a motor shaft core of a servo motor, a gear shifting lever meshing groove is formed in the bottom of the gear shifting lever driving device, the gear shifting lever on the gear shifting switch is meshed with the gear shifting lever meshing groove, and the gear shifting switch is electrically connected with the controller through a connecting terminal plug; the top end of the gear level driving device is provided with a downward shaft core mounting hole, a motor shaft core is coaxially arranged in the shaft core mounting hole, the upper end of the gear level driving device is relatively provided with two longitudinally arranged locating pin sliding grooves, locating pins fixed with the motor shaft core are arranged in the locating pin sliding grooves, and the motor shaft core moves up and down in the locating pin sliding grooves; the inner cavity of the shaft core mounting hole is provided with a tightening part which divides the shaft core mounting hole into an upper part and a lower part, a fastening screw is arranged in the shaft core mounting hole, the nail head of the fastening screw is positioned at the lower end of the tightening part, the screw body passes through the tightening part and then is connected with a motor shaft core, the lower end of the gear shift lever driving device is provided with a horizontal connecting block, a gear shift lever meshing groove is positioned at the bottom of the horizontal connecting block, and the groove is matched with the gear shift lever; the gear shift lever is V-shaped, and the gear shift lever comprises a driving handle and a driven handle, wherein a mounting shaft hole is formed in the connecting part of the driving handle and the driven handle, the driving handle is identical to the gear shift lever meshing groove, the driving handle is meshed in the gear shift lever meshing groove, and the mounting shaft hole is concentric with the shaft core mounting hole.
Preferably, a compression spring is further arranged in the shaft core mounting hole and sleeved on the fastening screw, the upper end of the compression spring is in contact with the motor shaft core, and the lower end of the compression spring is in contact with the tightening part.
Preferably, the controller is also connected to a display.
A detection method of a gear shift switch fault detection device of an automatic transmission comprises the following detection steps:
step one: firstly, a gear shift lever driving device is arranged on a motor shaft core of a servo motor, a gear shift lever and a gear shift switch are fixed on a transmission shell to finish the butt joint with the transmission, and then the gear shift switch is electrically connected with a controller and a display in sequence, so that the detection is ready;
step two: the gear shift lever driving device is pressed down to be meshed with the gear shift lever, and drives the gear shift lever to rotate to an N gear position according to the requirements of each gear shift angle;
step three: the servo motor takes the N gear position as an initial angle and sequentially rotates the gear shifting lever according to the sequence of N, D, R and P;
step four: the controller detects signals transmitted by the gear shifting switch through a control program, judges whether two or more gear signals are simultaneously input at the current position, and executes the fifth step if the controller detects the two or more gear signals at the same time; if the controller detects that only one gear signal is detected at the same time, executing the step six;
step five: the controller detects two or more gear signals at the same time, the display displays the alarm information of a gear switch, and meanwhile, a gear switch on-state indication picture pops up on the display interface to prompt related personnel about specific fault states;
step six, a step of performing a step of; the controller detects only one gear signal at the same time, the gear change switch is qualified in detection, and the detection is passed.
The beneficial effects of the invention are as follows: the gear shifting device is arranged on the motor shaft core, the gear shifting rod connected with the gear shifting switch is driven according to the gear shifting angle requirement to realize gear shifting, meanwhile, the controller is used for collecting state signals of the gear shifting switch and detecting and judging, the detected interphase short-circuit fault information is used for prompting an operator through the display, and the problems of ex-situ repairing and the like caused by the fact that the transmission leaves a factory to carry the whole vehicle can be effectively avoided. The automatic transmission gear shift switch fault detection device designed by the invention has the characteristics of accurate and visual fault judgment, high detection efficiency, good portability and convenience for synchronization with other test items.
Drawings
FIG. 1 is a block diagram of the structure of the present invention;
FIG. 2 is a diagram of the positional relationship between a motor shaft core and a shift lever driving device;
FIG. 3 is a front view of the shift lever drive;
FIG. 4 is a left side elevational view of the shift lever drive apparatus;
FIG. 5 is a bottom view of the shift lever drive;
FIG. 6 is a diagram of the positional relationship of a shift lever and a shift switch;
FIG. 7 is a schematic structural view of a shift lever;
FIG. 8 is a schematic structural view of a shift switch;
wherein: 1 motor shaft core, 2 gear shift lever driving device, 21 shaft core mounting hole, 22 locating pin spout, 23 locating pin, 24 hold-down spring, 25 fastening screw, 26 gear shift lever meshing groove, 28 tightening part, 3 gear shift lever, 31 driving handle, 32 mounting shaft hole, 33 follow movable handle, 4 lock nut, 5 shift switch, 51 binding post plug.
Detailed Description
As shown in fig. 1, the invention relates to a gear shift switch fault detection device of an automatic transmission, which comprises a gear shift lever driving device 2, a gear shift switch 5, a gear shift lever 3 and a controller, wherein a motor adopted by the invention is a servo motor, the controller adopts a PLC controller, the gear shift lever driving device 2 is connected with a motor shaft core 1 of the servo motor, a gear shift lever meshing groove 26 is arranged at the bottom of the gear shift lever driving device 2, the gear shift lever 3 on the gear shift switch 5 is meshed with the gear shift lever meshing groove 26, and the gear shift switch 5 is electrically connected with the controller through a connecting terminal plug 51. As shown in fig. 2, the top end of the gear lever driving device 22 is provided with a downward shaft core mounting hole 21, the motor shaft core 1 is located in the shaft core mounting hole 21, as shown in fig. 3-5, a tightening part 28 dividing the shaft core mounting hole 21 into an upper part and a lower part is arranged in the inner cavity of the shaft core mounting hole 21, the diameter of the inner cavity of the tightening part 28 is smaller than that of the upper part and the lower part of the shaft core mounting hole 21, a fastening screw 25 is arranged in the shaft core mounting hole 21, the head of the fastening screw 25 is located at the lower end of the tightening part 28, the screw body passes through the tightening part 28 and is connected with the motor shaft core 1, the head diameter of the fastening screw 25 is larger than that of the inner cavity of the tightening part 28 of the shaft core mounting hole 21, and the fastening screw 25 can move up and down along with the motor shaft core 1 in the lower inner cavity of the shaft core mounting hole 21 or synchronously rotate along with the motor shaft core 1. The lower extreme of gear level drive arrangement 2 is provided with a horizontal connecting block, and gear level meshing groove 26 is located the bottom of horizontal connecting block, and gear level meshing groove 26 and axle core mounting hole 21 intercommunication, and concentric, its groove type and gear level 3 phase-match.
As shown in fig. 7, the shift lever 3 is V-shaped, the shift lever 3 includes a driving lever 31 and a driven lever 33, a connecting portion between the driving lever 31 and the driven lever 33 is provided with a mounting shaft hole 32, the shift lever 3 is engaged in the shift lever engagement groove 26, the driving lever 31 is identical in shape to the shift lever engagement groove 26, the driving lever 31 is engaged in the shift lever engagement groove 26, and the mounting shaft hole 32 is concentric with the spindle mounting hole 21.
The upper end of the gear level driving device 2 is provided with two longitudinally opened locating pin sliding grooves 22 relatively, locating pins 23 fixed with the motor shaft core 1 are arranged in the locating pin sliding grooves 22, and the motor shaft core 1 moves up and down in the locating pin sliding grooves 22. In order to avoid hard compression deformation caused by the fact that the gear lever driving device 2 is pressed down on the gear lever 3 when the gear lever driving device 2 is not accurately meshed with the gear lever 3, a compression spring 24 is arranged in an inner cavity at the upper portion of the shaft core mounting hole 21, the compression spring 24 is sleeved on the fastening screw 25, the upper end of the compression spring 24 is in contact with the motor shaft core 1, the lower end of the compression spring is in contact with the tightening part 28, and when the gear lever driving device 2 is meshed with the gear lever 3, the compression spring 24, the positioning pin 23 and the positioning sliding groove 22 are matched to provide an upward supporting force for downward force of the gear lever driving device 2.
As shown in fig. 8, the shift lever 3 is mounted on the shift switch 5, and the shift switch 5 is fixed to the transmission case by a fastening bolt. The terminal plug 51 of the shift switch 5 is electrically connected to the controller. As shown in fig. 6, the manual control shaft coaxially mounts the shift lever 3 and the shift switch 5 on the transmission case, and the lock nut and the washer fix the shift lever 3 to the manual control shaft.
The PLC controller is also connected with a display, the state signals of the gear shifting switches 5 are collected by the PLC controller signal collection module, and when the control device detects that the gear shifting switches 5 have interphase short-circuit faults, the display displays alarm information to prompt operators.
The detection method for the automatic transmission gear shift switch fault detection device comprises the following specific steps:
step one: firstly, a gear shift lever driving device 2 is installed on a motor shaft core 1 of a servo motor, a gear shift lever 3 and a gear shift switch 5 are fixed on a transmission shell to finish the butt joint with a transmission, and then the gear shift switch 5 is electrically connected with a PLC controller and a display in sequence, so that the detection is ready;
step two: the gear shift lever driving device 2 is pressed down to be meshed with the gear shift lever 3, and drives the gear shift lever to rotate to an N gear position according to the requirements of each gear shift angle;
step three: the servo motor takes the N gear position as an initial angle and sequentially rotates the gear shift lever 3 according to the sequence of N, D, R and P;
step four: the PLC detects signals transmitted by the gear shifting switch 5 through a control program, judges whether two or more gear signals are simultaneously input at the current position, and executes the fifth step if the PLC detects the two or more gear signals at the same time; if the PLC detects that only one gear signal is detected at the same time, executing the step six;
step five: the PLC detects two or more gear signals at the same time, the display displays the alarm information of a gear switch, and meanwhile, a display interface pops up a gear switch 5 on-state indication picture to prompt related personnel of a specific fault state;
step six, a step of performing a step of; the PLC detects only one gear signal at the same time, and the gear change switch 5 detects the qualified gear and passes the test.
In the foregoing, the present invention is merely preferred embodiments, which are based on different implementations of the overall concept of the invention, and the protection scope of the invention is not limited thereto, and any changes or substitutions easily come within the technical scope of the present invention as those skilled in the art should not fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (3)
1. A detection method of a gear shift switch fault detection device of an automatic transmission is characterized by comprising the following steps of: the automatic transmission device comprises a gear lever driving device (2), a gear shift switch (5), a gear shift lever (3) and a controller, wherein the gear shift lever driving device (2) is connected with a motor shaft core (1) of a servo motor, a gear shift lever meshing groove (26) is formed in the bottom of the gear shift lever driving device (2), the gear shift lever (3) on the gear shift switch (5) is meshed with the gear shift lever meshing groove (26), and the gear shift switch (5) is electrically connected with the controller through a connecting terminal plug (51); the gear shift lever driving device is characterized in that a downward shaft core mounting hole (21) is formed in the top end of the gear shift lever driving device (2), a motor shaft core (1) is coaxially mounted in the shaft core mounting hole (21), two longitudinally-formed positioning pin sliding grooves (22) are oppositely formed in the upper end of the gear shift lever driving device (2), positioning pins (23) fixed with the motor shaft core (1) are arranged in the positioning pin sliding grooves (22), and the motor shaft core (1) moves up and down in the positioning pin sliding grooves (22); the inner cavity of the shaft core mounting hole (21) is provided with a tightening part (28) for dividing the shaft core mounting hole (21) into an upper part and a lower part, a fastening screw (25) is arranged in the shaft core mounting hole (21), a nail head of the fastening screw (25) is positioned at the lower end of the tightening part (28), a screw body penetrates through the tightening part (28) and then is connected with the motor shaft core (1), the lower end of the gear shift lever driving device (2) is provided with a horizontal connecting block, a gear shift lever meshing groove (26) is positioned at the bottom of the horizontal connecting block, and the groove is matched with the gear shift lever (3); the gear lever (3) is V-shaped, the gear lever (3) comprises a driving handle (31) and a driven handle (33), a mounting shaft hole (32) is formed in the connecting part of the driving handle (31) and the driven handle (33), the driving handle (31) is identical to the gear lever meshing groove (26) in shape, the driving handle (31) is meshed in the gear lever meshing groove (26), and the mounting shaft hole (32) is concentric with the shaft core mounting hole (21);
the detection method comprises the following steps:
step one: firstly, a gear lever driving device (2) is installed on a motor shaft core (1) of a servo motor, a gear lever (3) and a gear shifting switch (5) are fixed on a transmission shell to finish the butt joint with the transmission, and then the gear shifting switch (5) is electrically connected with a controller and a display in sequence, so that the detection is ready;
step two: the gear shift lever driving device (2) is pressed down to be meshed with the gear shift lever (3), and the gear shift lever is driven to rotate to an N gear position according to the requirements of each gear shift angle;
step three: the servo motor takes the N gear position as an initial angle and sequentially rotates the gear shifting lever (3) according to the sequence of N, D, R and P;
step four: the controller detects signals transmitted by the gear shifting switch (5) through a control program, judges whether two or more gear signals are simultaneously input at the current position, and executes the fifth step if the controller detects the two or more gear signals at the same time; if the controller detects that only one gear signal is detected at the same time, executing the step six;
step five: the controller detects two or more gear signals at the same time, the display displays the alarm information of the gear switch, and meanwhile, a display interface pops up a gear switch (5) on-state indication picture to prompt related personnel about a specific fault state;
step six, a step of performing a step of; the controller detects only one gear signal at the same time, and the gear change switch (5) is qualified in detection and passes the test.
2. The detection method of an automatic transmission shift switch failure detection apparatus according to claim 1, characterized in that: a compression spring (24) is further arranged in the shaft core mounting hole (21), the compression spring (24) is sleeved on the fastening screw (25), the upper end of the compression spring (24) is in contact with the motor shaft core (1), and the lower end of the compression spring is in contact with the tightening part (28).
3. A detection method of an automatic transmission shift switch failure detection apparatus according to claim 1 or 2, characterized in that: the controller is also connected with a display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112027.XA CN107643460B (en) | 2017-11-10 | 2017-11-10 | Automatic transmission gear shift switch fault detection device and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711112027.XA CN107643460B (en) | 2017-11-10 | 2017-11-10 | Automatic transmission gear shift switch fault detection device and detection method thereof |
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| CN107643460A CN107643460A (en) | 2018-01-30 |
| CN107643460B true CN107643460B (en) | 2023-08-18 |
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2017
- 2017-11-10 CN CN201711112027.XA patent/CN107643460B/en active Active
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