Planetary gearbox

Abstract

The invention discloses a planetary gearbox. An upper flange is arranged at the top of the gearbox body, a lower flange is arranged at the bottom of the gearbox body, and a separator plate is disposed inside the gearbox body and arranged between the upper flange and the lower flange. The planetary gearbox also comprises a speed control mechanism which is fixed in the gearbox body through the lower flange and the separator plate. The speed control mechanism is connected to a motor power shaft in the primary stage through holes in the upper flange, and is connected to an input spline shaft of a speed reducer in the subsequent stage through holes in the lower flange. The position of a center shifting side gear is changed through switching a handle assembly, the rotating speed input by a motor is converted into low rotating speed and large torque by the aid of three groups of duplex planetary gears, and then the rotating speed and the torque are output to the speed reducer at the subsequent stage through the center shifting side gear, so that the same planetary gearbox can provide more that one type of output rotating speed and torque.

Description

technical field [0001] The present invention relates to a transmission device for a power head of a drilling machine, in particular to a planetary gear transmission device. Background technique [0002] Most power heads of drilling machines can only provide a fixed speed and a fixed output torque. In recent years, the construction methods of drilling machines have been continuously updated and new construction methods have emerged, which have higher requirements for the output speed and torque of the power head. For example, long auger drilling machines are often used to guide holes for pile pressing machines , Higher speed and lower torque are required for construction in order to have higher operating efficiency. In addition, both screw piles and extruded piles require large torque and low rotational speed. [0003] The power head that outputs a single fixed speed and fixed torque can no longer meet the needs of users. At present, users can only meet the needs by purchas...

AI Technical Summary

Problems solved by technology

[0003] The power head that outputs a single fixed speed and fixed torque can no longer meet the needs of users. At present, users can only meet the needs by purchasing additional low-speed power heads, which increases the cost of users.

[0004] In basic construction machinery, frequency converter variable speed power heads, DC motor speed regulating power heads and hydraulic variable speed power heads have also appeared. Frequency converter power heads and DC motor power heads can only change speed, but cannot change torque; hydraulic variable speed power heads are suitable for large For the power head, the loss of energy consumption is relatively large, so it is rarely used

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