Automatic shift type speed changing box device and rubber-tyred engineering machinery

Abstract

The invention discloses an automatic shift type speed changing box device, which comprises a box body, an input shaft, an output shaft and a plurality of intermediate shafts, wherein the input shaft and the output shaft are arranged in the box body, and transmission gears are arranged on the intermediate shafts. The automatic shift type speed changing box device further comprises a clutch arranged between the input shaft and the output shaft and a control mechanism of the clutch, the control mechanism comprises a telescoping cylinder and a pushing block for pressing or separating a friction sheet and arranged inside the clutch, a cylinder body of the telescoping cylinder is located on the outside of the box body, and the extend-out end of an expansion link of the telescoping cylinder is connected with the pushing block. the automatic shift type speed changing box device pushes the pushing block arranged in the clutch to move through the telescoping cylinder arranged on the outside of the box body, so operation of the clutch is achieved, a phenomenon that a fluid medium sneaks into the inside of the speed changing box can be avoided, and fabrication and using cost can be saved. In addition, the invention further discloses rubber-tyred engineering machinery including the automatic shift type speed changing box device.

Description

technical field [0001] The invention relates to the technical field of gear shifting of tire-type construction machinery, in particular to an automatic shifting gearbox device. In addition, the present invention also relates to a tire-type construction machine comprising the above-mentioned automatic shifting transmission device. Background technique [0002] The port tire crane is a typical tire-type construction machinery. It is widely used in the port operation environment. Due to its complicated driving conditions, it often needs to meet different driving conditions such as flat ground and climbing during the driving process. Therefore, it is necessary to A shift mechanism is installed on the crane body to meet the driving requirements under different driving conditions. [0003] Please refer to figure 1 and figure 2 , figure 1 It is a schematic diagram of the installation position of a typical automatic shift transmission device in the prior art on the construction...

AI Technical Summary

Problems solved by technology

[0008] In order to prevent the hydraulic oil in the cavity from entering the gearbox, a wear-resistant ring 1' is generally installed between the transmission shaft and the shaft seat, but as the high-speed rotation of the transmission shaft wears the wear-resistant ring 1', the hydraulic pressure in the cavity will Oil is easier to escape into the gearbox body

[0009] The above-mentioned clutch control structure not only requires relatively high machining accuracy of the transmission shaft and the end cover 2', but also requires a separate hydraulic pump outside the gearbox to release the hydraulic oil that has escaped into the gearbox in order to ensure the normal use of the gearbox. drawn out, which not only increases the cost, but also increases the overall structural space of the gearbox, which is not suitable for the use of compact construction machinery

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