Digital positioner and digital governor

Abstract

The invention provides a digital positioner and a digital governor with the digital positioner. The digital positioner comprises a package assembly, a power assembly and a connecting mechanism, wherein the package assembly comprises a front panel (11), an outer casing (4) and a tail end cover (12); the front panel (11), the outer casing (4) and the tail end cover (12) are sequentially connected; the inner space of the outer casing (4) forms into a container space; the power assembly comprises a motor (8) and a reduction box (3); the motor (8), the reduction box (3), the connecting mechanism and the front panel (11) are sequentially connected; the connecting mechanism includes an inner frame plate (9); and the motor (8), the reduction box (3) and the inner frame plate (9) are arranged in the container space. By means of the connecting mechanism composed of a sleeve, a screw, the front panel and the inner frame plate, the shaft positioning function is met on one hand, the external connection function is met on the other hand, and meanwhile, the free adjustment of the length of an output shaft is achieved.

Description

technical field [0001] The invention relates to the technical field of engine fuel adjustment, in particular to a digital positioner and a digital governor. Background technique [0002] In the engine control, the function of the intelligent digital positioner is to receive the position control signal, adjust the position of the valve or the rack through a series of driving devices, and realize the precise control of the fuel supply. Among them, the high-torque intelligent digital positioner generally uses an external controller to control the electric actuator. The controller and the electric actuator are connected by cables, which are easily interfered by external signals. In addition, the wiring is complicated and prone to errors. [0003] Patent document CN101832435B discloses a torque motor actuator for a rotary diesel engine, which includes a shaft, a bearing, a large gear, an angle sensor, a torque motor, a pinion, an eccentric wheel, a controller, and the like. The ...

AI Technical Summary

Problems solved by technology

However, the structure provided by this patent document needs to use a backlash elimination mechanism to adjust the transmission gap during use, which increases the complexity of the operation and is not conducive to realizing the intelligence and automation of the adjustment process.

[0004] In addition, in the prior art, the motor in the actuator usually adopts a radial support structure, which requires high assembly between the motor and the gearbox. When the assembly accuracy is not enough, the motor is prone to jamming due to axial over-positioning, resulting in damage to the motor

In addition, in terms of structure and component selection, the existing technology has the disadvantages of complicated assembly and high manufacturing cost

Images