Gear-switching control system of transfer case and control method thereof

Abstract

The invention discloses a gear-switching control system of a transfer case for a walking construction machinery. The gear-switching control system of the transfer case comprises a detection device and a control device, wherein the detection device is used for detecting the state of the construction machinery and sending an acquired state signal after a transfer case gear-switching command is sent out, and the control device is used for receiving the state signal and judging whether torque is input into or output from the transfer case according to the state signal. When the torque is input in or output from the transfer case, the control device keeps the current gear of the transfer case unchanged; and when no torque is input in or output from the transfer case, the control device shifts the gear of the transfer case according to the transfer case gear-switching command. The invention also discloses a transfer case gear-switching control method by using the gear-switching control system of the transfer case. The system and the method which are provided by the invention improve the safety of the transfer case in gear switching and prolong the service life of the transfer case.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a gear switching control system of a transfer case. In addition, the invention also relates to a gear switching control method of the transfer case. Background technique [0002] With the rapid development of my country's economic construction and the improvement of people's requirements for the power performance of construction machinery, the application of transfer gear in construction machinery is becoming more and more extensive, and the safety of transfer case gear switching is also increasing. more important. [0003] The transfer case is a gear transmission device fixed on the frame separately. Its input end is connected to the output end of the gearbox through a universal transmission device, and its output end is connected to the drive shaft or oil pump through a universal transmission device to provide power. . When the output end of the transfer case is connected...

AI Technical Summary

Problems solved by technology

[0006] However, if the gear pair inside the transfer case is still in operation when the gear is switched, it will cause the meshed gear pair to not be completely disengaged, or the gear pair to be meshed cannot be fully meshed; Under normal circumstances, if a large torque is transmitted, it is easy to cause uneven local stress on the gears and cause stress deformation. In severe cases, even tooth hitting will occur, which will damage the gear pair, cause the entire transfer case to be scrapped, and cause great waste.

[0007] Therefore, it can be seen from the above-mentioned method for shifting gears of the transfer case that when the shifting of the transfer case is performed, there are no safety protection measures for the transfer case, which poses a threat to the safety of the transfer case. threatened

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