CN110095278B - Dynamic simulation diagnosis device for gear shifting mechanism of automatic gearbox of truck - Google Patents
Dynamic simulation diagnosis device for gear shifting mechanism of automatic gearbox of truck Download PDFInfo
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- CN110095278B CN110095278B CN201810083672.1A CN201810083672A CN110095278B CN 110095278 B CN110095278 B CN 110095278B CN 201810083672 A CN201810083672 A CN 201810083672A CN 110095278 B CN110095278 B CN 110095278B
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- 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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Abstract
The invention discloses a dynamic simulation diagnosis device for a gear shifting mechanism of an automatic gearbox of a truck, wherein one end of a first switch K1 is connected with the anode of an external power supply E in series, the other end of the first switch K1 is connected with one ends of a plurality of switches in parallel, and the plurality of switches comprise a second switch K2 to an eighth switch K8; the other end of the fourth switch K4 is connected with the anodes of diodes D1, D2, D3 and D4 in parallel, and the cathodes of diodes D1, D2, D3 and D4 are respectively connected with the control ends of a first electromagnetic valve MUE, a second electromagnetic valve MGE, a third electromagnetic valve MUB and a fourth electromagnetic valve MGB; the other end of the third switch K3 is connected with the anodes of diodes D5 and D6 in parallel, and the cathodes of diodes D5 and D6 are respectively connected with the control ends of a fourth electromagnetic valve MGB and a third electromagnetic valve MUB; the other end of the second switch K2 is connected with the anodes of diodes D7 and D8 in parallel, and the cathodes of diodes D7 and D8 are respectively connected with the control ends of a second electromagnetic valve MGE and a first electromagnetic valve MUE; the air inlets of the four electromagnetic valves are connected with the air inlet pipe in parallel, and the air outlets of the four electromagnetic valves correspond to the air inlets and the control ends of the air valves of the gear shifting mechanism of the externally-connected truck respectively.
Description
Technical Field
The invention relates to a diagnosis device for a gear shifting mechanism of an automatic gearbox of a truck, in particular to a dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gearbox of the truck.
Background
The truck is one of main truck types for transporting and carrying cargos in a certain enterprise, such as a gallop ACTROS4141 truck, and the truck mainly undertakes main and auxiliary raw material transportation in a plant area, and comprises the following steps: and transporting materials such as water granulated slag, coke, asphalt ash, dry slag, gas ash, hot-pressing blocks, lime powder and the like. Due to the limitation of a factory road, the vehicle stops and starts frequently, the gear shifting times are high, statistics shows that the working strength of the gear shifting mechanism of the automatic gearbox of the truck is 1800 times/100 KM, the main working medium of the gear shifting mechanism is compressed air, the position of the gear shifting mechanism of the vehicle tends to be degraded due to the fact that the compressed air contains large moisture, and after the gear shifting mechanism breaks down, the gears of the vehicle cannot be switched normally, so that the vehicle cannot run and needs to be subjected to rush repair operation. In addition, after the gear shifting mechanism breaks down, related fault alarm does not simply point to the gear shifting mechanism, and the fault alarm is difficult to judge when the fault is judged, so that the overhauling difficulty is increased.
The gear shifting mechanism of the truck belongs to an important working part of an automatic gearbox of the truck, the working environment is precise, the working pressure is high (more than or equal to 8 kg), once a fault occurs and maintenance is needed, a manufacturer clearly requires that a new part needs to be replaced, and the cost is increased. Inside understanding and the analysis through to truck gearshift theory of operation of enterprise, can accomplish to tear open and examine the restoration to gearshift, nevertheless the operating characteristic after restoreing whether satisfies the operation requirement of vehicle, only just can know after the installation is operated the computer, if can not satisfy the vehicle operation requirement and can only pull down once more and overhaul, frequent tear open and examine the rise that has caused maintenance work load, reduced maintenance efficiency, influenced the normal maintenance progress of vehicle.
Disclosure of Invention
The invention aims to provide a dynamic simulation diagnosis device for a gear shifting mechanism of an automatic gearbox of a truck, which not only can work according to the specific working environment of the gear shifting mechanism, but also can independently check the performance of each working valve core of the gear shifting mechanism.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gear box of a truck comprises a switch, a diode and an electromagnetic valve,
one end of a first switch K1 is connected in series with the anode of an external power supply E, the cathode of the power supply E is grounded, the other end of the first switch K1 is connected in parallel with one ends of a plurality of switches, and the plurality of switches comprise a second switch K2, a third switch K3 and a fourth switch K4;
the other end of the fourth switch K4 is connected in parallel with the anode of a first diode D1, the anode of a second diode D2, the anode of a third diode D3 and the anode of a fourth diode D4, the cathode of the first diode D1 is connected with the control end of a first solenoid valve MUE, the cathode of the second diode D2 is connected with the control end of a second solenoid valve MGE, the cathode of the third diode D3 is connected with the control end of a third solenoid valve MUB, and the cathode of the fourth diode D4 is connected with the control end of a fourth solenoid valve MGB;
the other end of the third switch K3 is connected in parallel with the anode of a fifth diode D5 and the anode of a sixth diode D6, the cathode of the fifth diode D5 is connected with the control end of the fourth solenoid valve MGB, and the cathode of the sixth diode D6 is connected with the control end of the third solenoid valve MUB;
The other end of the second switch K2 is connected in parallel with the anode of a seventh diode D7 and the anode of an eighth diode D8, the cathode of the seventh diode D7 is connected with the control end of a second solenoid valve MGE, and the cathode of the eighth diode D8 is connected with the control end of a first solenoid valve MUE;
the first electromagnetic valve MUE air inlet, the second electromagnetic valve MGE air inlet, the third electromagnetic valve MUB air inlet and the fourth electromagnetic valve MGB air inlet are connected with an air inlet pipe in parallel, and the first electromagnetic valve MUE air outlet, the second electromagnetic valve MGE air outlet, the third electromagnetic valve MUB air outlet and the fourth electromagnetic valve MGB air outlet respectively correspond to a front air inlet valve Y1 air inlet and control end, a front exhaust valve Y2 control end, a rear exhaust valve Y3 control end, a rear air inlet valve Y4 air inlet and control end of an externally-connected truck gear shifting mechanism; the air outlet of the front air inlet valve Y1 is connected with the rear cavity of the gear shifting mechanism; the air inlet of a front exhaust valve Y2 is connected with the rear cavity of the gear shifting mechanism, and the air outlet of a front exhaust valve Y2 is connected with an exhaust pipe; the air inlet of a rear exhaust valve Y3 is connected with the front cavity of the gear shifting mechanism, and the air outlet of a rear exhaust valve Y3 is connected with an exhaust pipe; the outlet of the rear inlet valve Y4 is connected with the front chamber of the gear shifting mechanism.
The other end of the first switch K1 is also connected in parallel with one end of a plurality of switches, and the plurality of switches comprise a fifth switch K5, a sixth switch K6, a seventh switch K7 and an eighth switch K8; the other end of the fifth switch K5 is connected with the control end of the first solenoid valve MUE, the other end of the sixth switch K6 is connected with the control end of the second solenoid valve MGE, the other end of the seventh switch K7 is connected with the control end of the third solenoid valve MUB, and the other end of the eighth switch K8 is connected with the control end of the fourth solenoid valve MGB.
The dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gearbox of the truck can work according to the specific working environment of the gear shifting mechanism, and can independently check the performance of each working valve core of the gear shifting mechanism. The diagnostic device can detect each action link of the gear shifting mechanism, including three actions of the front, middle and rear of the gear shifting mechanism, and the action performance of two air inlet valves and two air outlet valves of the gear shifting mechanism, so as to judge whether the repaired gear shifting mechanism meets the use requirement of a vehicle. If the repaired gear shifting mechanism has a fault, the diagnostic device of the invention can also find out the specific part of the gear shifting mechanism with the problem so as to carry out targeted repair.
The dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gearbox of the truck can accurately judge the performance of the gear shifting mechanism, ensures the good performance of the on-board gear shifting mechanism, avoids the situation that the gear shifting mechanism is repeatedly disassembled and assembled, and fundamentally avoids the situation that the gear shifting mechanism is damaged due to frequent disassembly and inspection. In the field detection, the single electromagnetic valve is used for independently controlling the air inlet valve and the air outlet valve, so that the fault can be accurately judged, the overhauling efficiency is improved, and the field operation problem is solved.
Drawings
FIG. 1 is a schematic structural view of a dynamic simulation diagnostic device for a gear shifting mechanism of an automatic gearbox of a truck according to the present invention;
FIG. 2 is a flow chart of the dynamic simulation diagnostic device for the shifting mechanism of the automatic gearbox of the truck.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, a dynamic simulation diagnosis device for a gear shifting mechanism of an automatic transmission of a truck comprises: the switch, diode, solenoid valve, first switch K1 one end concatenates external power source E positive pole, and power E negative pole ground connection, a plurality of switch one end is parallelly connected again after fuse F1 is established ties to the other end of first switch K1, and a plurality of switches include second switch K2, third switch K3, fourth switch K4, fifth switch K5, sixth switch K6, seventh switch K7 and eighth switch K8. The first switch K1 serves as a master switch of the diagnostic device.
The other end of the fourth switch K4 is connected in parallel with the anode of a first diode D1, the anode of a second diode D2, the anode of a third diode D3 and the anode of a fourth diode D4, the cathode of the first diode D1 is connected with the control end of a first solenoid valve MUE, the cathode of the second diode D2 is connected with the control end of a second solenoid valve MGE, the cathode of the third diode D3 is connected with the control end of a third solenoid valve MUB, and the cathode of the fourth diode D4 is connected with the control end of a fourth solenoid valve MGB.
The other end of the third switch K3 is connected in parallel with the anode of a fifth diode D5 and the anode of a sixth diode D6, the cathode of the fifth diode D5 is connected to the control end of the fourth solenoid valve MGB, and the cathode of the sixth diode D6 is connected to the control end of the third solenoid valve MUB.
The other end of the second switch K2 is connected in parallel with the anode of a seventh diode D7 and the anode of an eighth diode D8, the cathode of the seventh diode D7 is connected to the control end of the second solenoid valve MGE, and the cathode of the eighth diode D8 is connected to the control end of the first solenoid valve MUE.
The other end of the fifth switch K5 is connected with the control end of the first solenoid valve MUE, the other end of the sixth switch K6 is connected with the control end of the second solenoid valve MGE, the other end of the seventh switch K7 is connected with the control end of the third solenoid valve MUB, and the other end of the eighth switch K8 is connected with the control end of the fourth solenoid valve MGB.
The first electromagnetic valve MUE air inlet, the second electromagnetic valve MGE air inlet, the third electromagnetic valve MUB air inlet and the fourth electromagnetic valve MGB air inlet are connected with the air inlet pipe 1 in parallel, and the first electromagnetic valve MUE air outlet, the second electromagnetic valve MGE air outlet, the third electromagnetic valve MUB air outlet and the fourth electromagnetic valve MGB air outlet respectively correspond to an air inlet and a control end of a front air inlet valve Y1, a control end of a front exhaust valve Y2, a control end of a rear exhaust valve Y3, an air inlet and a control end of a rear air inlet valve Y4 of an externally-connected truck gear shifting mechanism; the air outlet of the front air inlet valve Y1 is connected with the rear cavity of the gear shifting mechanism; the air inlet of a front exhaust valve Y2 is connected with the rear cavity of the gear shifting mechanism, and the air outlet of a front exhaust valve Y2 is connected with the exhaust pipe 31; the air inlet of the rear exhaust valve Y3 is connected with the front cavity of the gear shifting mechanism, and the air outlet of the rear exhaust valve Y3 is connected with the exhaust pipe 31; the outlet of the rear inlet valve Y4 is connected with the front chamber of the gear shifting mechanism.
In fig. 1, reference numeral 32 denotes an exhaust port of the shift mechanism, reference numeral 31 denotes an exhaust pipe, and both the exhaust port 32 and the exhaust pipe 31 are communicated with the outside atmosphere.
The dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gearbox of the truck can carry out connection detection on the repaired gear shifting mechanism of the automatic gearbox of the truck, for example, the repaired gear shifting mechanism of the speed-rush ACTROS4141 type automatic gearbox of the truck can be detected, the existing problems can be accurately found out, and a targeted guidance suggestion is provided for the repairing work of the gear shifting mechanism.
The detection process of the dynamic simulation diagnosis device for the gear shifting mechanism of the automatic gearbox of the truck comprises the following steps: see fig. 2 and 1.
Placing the repaired gear shifting mechanism of the automatic gearbox of the truck in a test area, connecting air inlets and control ends of a front air inlet valve Y1, a front exhaust valve Y2, a rear exhaust valve Y3 and a rear air inlet valve Y4 of the gear shifting mechanism into the diagnosis device according to a wiring schematic diagram shown in figure 1, connecting an electric circuit of the diagnosis device with a power supply E, connecting an air inlet pipe 1 into an external air circuit, connecting an air outlet pipe 31 and an air outlet 32 to the atmosphere, pressing a first switch K1 after connection and installation are finished, electrifying the diagnosis device, confirming that the gear shifting mechanism has no air leakage, and testing after confirmation is finished.
Single test of a valve core of the gear shifting mechanism:
front intake valve Y1 test: when the fifth switch K5 is pressed, positive electricity flows through the first switch K1 and the fuse F1 to reach the first electromagnetic valve MUE, the first electromagnetic valve MUE is electrified to act, the air inlet circuit is opened, the compressed air pushes the front position air inlet valve Y1 to act, the air inlet circuit is opened, the air outlet circuit is closed, and the compressed air passes through the front position air outlet valve Y2 and is exhausted to the atmosphere through the air outlet 31.
Front exhaust valve Y2 test: when the sixth switch K6 is pressed, positive electricity flows through the first switch K1 and the fuse F1 to reach the second electromagnetic valve MGE, the second electromagnetic valve MGE is electrified to act, the air inlet circuit is opened, and compressed air pushes the front exhaust valve Y2 to act.
Rear exhaust valve Y3 test: when the seventh switch K7 is pressed, the positive electricity flows through the first switch K1 and the fuse F1 to reach the third electromagnetic valve MUB, the third electromagnetic valve MUB is electrified to act, the air inlet circuit is opened, and the compressed air pushes the rear exhaust valve Y3 to act.
Late intake valve Y4 test: when the eighth switch K8 is pressed, positive electricity flows through the first switch K1 and the fuse F1 to the fourth electromagnetic valve MGB, the fourth electromagnetic valve MGB is powered on to operate, the air inlet path is opened, the compressed air pushes the back position air inlet valve Y4 to operate, the air inlet path is opened, the air outlet path is closed, and the compressed air is exhausted to the atmosphere through the back position air outlet valve Y3 and the air outlet 31.
Testing the position of a shift cylinder of the gear shifting mechanism:
and (3) median test: pressing the fourth switch K4, the positive current flows through the first switch K1 and the fuse F1, and reaches the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4; after the current flows through fourth diode D4, it is blocked by fifth diode D5, and reaches fourth solenoid valve MGB, and fourth solenoid valve MG is electrically operated. After the current flows through the third diode D3, the current is blocked by the sixth diode D6 and reaches the third solenoid valve MUB, and the third solenoid valve MUB is electrically operated. The rear intake valve Y4 opens the rear intake and the rear exhaust valve Y3 closes and compressed air enters the front chamber of the shifter. After the current flows through the first diode D1, the current is blocked by the eighth diode D8 and reaches the first solenoid valve MUE, and the first solenoid valve MUE is energized. After the current flows through second diode D2, it is blocked by seventh diode D7 and reaches second solenoid valve MGE, and second solenoid valve MGE is electrically operated. The forward intake valve Y1 opens the rear intake and the forward exhaust valve Y2 closes and compressed air enters the rear chamber of the shift mechanism. Under the combined action of compressed air in the front and rear chambers of the gear shifting mechanism, the piston of the gear shifting mechanism is pushed to be in the middle position.
And (3) testing the front position: pressing the second switch K2, the positive current flows through the first switch K1, the fuse F1, and to the seventh diode D7 and the eighth diode D8; after the current flows through the eighth diode D8, the current is blocked by the first diode D1 and reaches the first solenoid valve MUE, and the first solenoid valve MUE is energized. After the current flows through seventh diode D7, it is blocked by second diode D2, and reaches second solenoid valve MGE, which is electrically operated. The front position air inlet valve Y1 opens for rear air inlet, the front position air outlet valve Y2 closes, and compressed air enters a rear cavity of the gear shifting mechanism; the compressed air pushes the piston forward, causing the shifting mechanism to push the piston to a forward position.
And (3) rear position testing: when the third switch K3 is pressed, the positive current flows through the first switch K1 and the fuse F1, and reaches the fifth diode D5 and the sixth diode D6; after the current flows through fifth diode D5, it is blocked by fourth diode D4, and reaches fourth solenoid valve MGB, which is electrically operated. After the current flows through the sixth diode D6, the current is blocked by the third diode D3 and reaches the third solenoid valve MUB, and the third solenoid valve MUB is electrically operated. The rear position air inlet valve Y4 is opened for rear air inlet, the rear position air outlet valve Y3 is closed, and compressed air enters a front chamber of the gear shifting mechanism; the compressed air pushes the piston to move backwards, so that the shifting mechanism pushes the piston to be in a rear position.
In addition, after a fault that gears cannot be switched occurs in the running process of the vehicle, the gear shifting mechanism can be controlled by using the diagnosis device provided by the invention, and the vehicle is driven back to the site for maintenance in an emergency gear shifting mode, so that the dangerousness and uncontrollable factors existing in field maintenance operation are reduced.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A dynamic simulation diagnosis device for a gear shifting mechanism of an automatic gearbox of a truck is characterized in that: comprises a first switch K1, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a first electromagnetic valve MUE, a second electromagnetic valve MGE, a third electromagnetic valve MUB and a fourth electromagnetic valve MGB,
one end of a first switch K1 is connected in series with the anode of an external power supply E, the cathode of the power supply E is grounded, the other end of the first switch K1 is connected in parallel with one end of a plurality of switches, and the plurality of switches comprise a second switch K2, a third switch K3 and a fourth switch K4;
the other end of the fourth switch K4 is connected in parallel with the anode of a first diode D1, the anode of a second diode D2, the anode of a third diode D3 and the anode of a fourth diode D4, the cathode of the first diode D1 is connected with the control end of a first solenoid valve MUE, the cathode of the second diode D2 is connected with the control end of a second solenoid valve MGE, the cathode of the third diode D3 is connected with the control end of a third solenoid valve MUB, and the cathode of the fourth diode D4 is connected with the control end of a fourth solenoid valve MGB;
the other end of the third switch K3 is connected in parallel with the anode of a fifth diode D5 and the anode of a sixth diode D6, the cathode of the fifth diode D5 is connected with the control end of the fourth solenoid valve MGB, and the cathode of the sixth diode D6 is connected with the control end of the third solenoid valve MUB;
The other end of the second switch K2 is connected in parallel with the anode of a seventh diode D7 and the anode of an eighth diode D8, the cathode of the seventh diode D7 is connected with the control end of a second solenoid valve MGE, and the cathode of the eighth diode D8 is connected with the control end of a first solenoid valve MUE;
the first electromagnetic valve MUE air inlet, the second electromagnetic valve MGE air inlet, the third electromagnetic valve MUB air inlet and the fourth electromagnetic valve MGB air inlet are connected with an air inlet pipe in parallel, and a first electromagnetic valve MUE air outlet, a second electromagnetic valve MGE air outlet, a third electromagnetic valve MUB air outlet and a fourth electromagnetic valve MGB air outlet respectively correspond to an air inlet and a control end of a front air inlet valve Y1, a control end of a front exhaust valve Y2, a control end of a rear exhaust valve Y3, an air inlet and a control end of a rear air inlet valve Y4 of an externally-connected truck gear shifting mechanism; the air outlet of the front air inlet valve Y1 is connected with the rear cavity of the gear shifting mechanism; the air inlet of a front exhaust valve Y2 is connected with the rear cavity of the gear shifting mechanism, and the air outlet of the front exhaust valve Y2 is connected with an exhaust pipe; the air inlet of a rear exhaust valve Y3 is connected with the front cavity of the gear shifting mechanism, and the air outlet of a rear exhaust valve Y3 is connected with an exhaust pipe; the outlet of the rear inlet valve Y4 is connected with the front chamber of the gear shifting mechanism.
2. The truck automatic transmission gear shifting mechanism dynamic simulation diagnostic device according to claim 1, characterized in that: the other end of the first switch K1 is also connected in parallel with one end of a plurality of switches, and the plurality of switches comprise a fifth switch K5, a sixth switch K6, a seventh switch K7 and an eighth switch K8; the other end of the fifth switch K5 is connected with the control end of the first solenoid valve MUE, the other end of the sixth switch K6 is connected with the control end of the second solenoid valve MGE, the other end of the seventh switch K7 is connected with the control end of the third solenoid valve MUB, and the other end of the eighth switch K8 is connected with the control end of the fourth solenoid valve MGB.
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