Combined gearbox

Abstract

The invention discloses a combined gearbox. The combined gearbox comprises an input module, a speed change module, an output module and a box body, wherein the speed change module comprises a drivingshaft, a driven shaft and a gear shifting mechanism; the driving shaft is sequentially sleeved with a first gear, a second gear, a third gear and a fourth gear in the axial direction; the driven shaftis sequentially sleeved with a fifth gear, a sixth gear, a seventh gear and an eighth gear which are engaged with the corresponding gears on the driving shaft in the axial direction; the gear shifting mechanism is clamped to a first annular groove in the third gear and a second annular groove in the sixth gear; a first transmission part is arranged between the third gear and the second gear, anda second transmission part is arranged between the third gear and the fourth gear; and a sixth transmission part is arranged between the sixth gear and the fifth gear, and a fifth transmission part isarranged between the sixth gear and the seventh gear. The combined gearbox provides more speed choices, is compact and simple in structure, can shift gears as needed without disassembly and assembly,and is convenient and reliable in speed change.

Description

technical field [0001] The invention relates to the technical field of transmission, and more specifically, to a combined gearbox. Background technique [0002] In daily production work, due to the influence of various factors such as wood material, thickness, required processing shape, tool cutting depth, etc., in order to obtain the required speed segment and meet the finer speed requirements required for processing, The feeder generally requires at least 8 gears. In the case of the gear ratio set by the factory for ordinary feeders, only the motor gear (fast and slow) can be directly adjusted. If you want to obtain a speed other than the factory-set gear ratio, you need to disassemble the protective back cover of the feeder and remove the transmission parts, replace the gear with a new gear ratio, and then reinstall all the parts to get the new speed. If the speed obtained by replacing the new gear ratio does not meet the actual use requirements of production, it is nec...

AI Technical Summary

Problems solved by technology

But the disadvantage of this variable ratio coaxial combined gearbox is that the overall structure is bulky and bloated, and it takes up a lot of space, and one of the gears is a free state (that is, neutral gear) with no gear ratio, no meshing and no restrictions. Three sets of different gear ratios (that is, three actual gears)

In addition, the four-speed gearbox can only shift gears in the manner of advancing or retreating in sequence, and cannot change gears in random combinations.

Therefore, it cannot be applied to the feeder to meet the needs of 4-speed transmission

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