Modification of the dry clutch mechanism of the truck

As we all know, container trucks play an important role in port container logistics companies, connecting the frontier of the terminal with the production of venues, venues and venues.
First, the program determines that the clutch of Hongyan container trucks uses dry friction plates. Due to the busy production, there are many forks in the port area. The container trucks start and stop frequently during operation, and the clutch plates are abnormally worn. The average one car needs to be replaced after two to three months. Moreover, the replacement process is cumbersome. Every time the gearbox is to be hoisted, a large number of auxiliary devices are removed, and sometimes two cars are replaced at the same time, which has a serious impact on the company's production. Moreover, the driver reported that it was laborious to step on the clutch pedals during each shift, which increased their labor load. The clutch bearing and the guide seat were often burned, the clutch plates were ablated, the separation platen was damaged, and even the flywheel failed several times. Regardless of the economic point of view or the production needs, it is extremely urgent to reform it. For this reason, the related books and materials were consulted, and the clutch transmission mechanism and control device were studied one by one. It was decided to modify the clutch mechanism of this model to adapt to the port area. operation.
Second, the restructuring plan 1. Re-use the return spring for analysis through long-term observation. It is found that the main reason for the loss of the general separation bearing is that the separation bearing is not completely returned, and it will hit the separation platen pressure claw and follow the rotation. If the high-speed operation for a long time causes the high temperature of the separation bearing, it will burn with the guide seat. Moreover, when the vehicle is idling, the clutch plates are often in a critical state of contact, resulting in increased wear of the clutch plates. In order to solve this problem, re-puncturing the separation bearing guide seat, using a return spring with a large elastic coefficient, from the original two to four, and regularly grease the guide seat shaft to ensure the separation of the bearing quickly The return position makes the separation bearing not follow-up, thus reducing the possibility of the separation bearing burning. It also reduces the wear of the clutch plates.
2. Switch to oil circuit control When the vehicle air pressure generally reaches 0.7Mpa, the clutch is still heavy when shifting, indicating that there is a problem with the clutch assist separation system. Usually due to the small opening of the boost button valve, the spool stroke is not enough, or the closure is not strict. At first, after the replacement of the booster cylinder, the palliative is not a cure. Because the driver needs to operate the clutch frequently during the operation in the port area, the booster button valve spool wears sharply, and the pedal heavy fault does not take long. Through careful observation, careful analysis, mapping, and decided to use hydraulic control. First, the control air path and clutch transmission mechanism of the original car were modified, and the assist cylinder and the button valve were discarded. In the cab, a clutch master cylinder is modified at the lower end of the pedal, and a clutch cylinder is added to the side of the gearbox to re-lay the oil pipeline. The simplified schematic and working principle after the transformation are as follows:

When the driver steps on the clutch pedal, the main pump (main cylinder) pushes the rod forward, pushes the piston forward, and the oil in the main cylinder is pressed into the working cylinder, and the force continues to increase as the force on the pedal is pressed to make the oil pressure Increase the piston and piston rod of the sub-pump (working cylinder) to move, and push the separation fork to rotate, push the separation bearing forward, push the separation lever forward, separate the lever with the semicircle and the roller as the fulcrum, and pull the pressure plate at the outer end. , the pressure plate loses the pressing force, thereby cutting off the power transmission. When the driver relaxes the clutch pedal, the main pump (main cylinder) piston flows under the tension of the return spring, and the oil of the sub-pump (working cylinder) flows back to the main cylinder. The pedal, the separation fork and the separation bearing are all in their respective return springs. Return to the original position under the action of pulling force. The pressure plate re-presses the clutch plate for power transmission.
Third, the effect of the card clutch mechanism after the transformation, after a number of measurements proved that the clutch is completely solved, no longer the separation of the bearing burned, significantly extending the life of the clutch plate, from the original average of 3 months need to be replaced, now reach 9 months. According to the calculation, the maintenance time saved, a large amount of manpower is not counted, the single repair fee can save nearly 10,000 yuan per year, and there is no worries.