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  • Introduction what is the gear motor

    2015-02-11 11:19:05 Hit:
  • Gear motor overview

    Introduction

    Gear type hydraulic motor or gear motor. Gear motor is a positive displacement hydraulic motor, the hydraulic pressure acting on the teeth, to generate an outputtorque on the transmission shaft. Gear motor basically by into rotating assembly, shelloil port and two gear component, and the drive shaft is connected with a gear is a driving gear, a driven gear.

    Gear type hydraulic motor has the advantages of simple structure, high output speed,better anti pollution performance; but because of the inherent defects, such as poor sealing lead to internal leakage, low volume efficiency, poor stability, the general use of the pressure is low, the torque transmission co.. And the rotational speed and torque moment with the position change of mesh point of change, so the gear hydraulic motor is suitable only for high speed and small torque. Generally used fordrilling, wind machine, engineering machinery, agricultural machinery and the torqueuniform mechanical equipment requirements are not high. Comparison of 2.1.2 gear motor and gear pump

    From the principle of energy conversion: the gear pump to change mechanical energyinto hydraulic energy; and the gear motor oil pressure energy into mechanical energy,two is reversible at this point. It should be said that the gear pump can also be used as a gear motor, the author used the gear pump to replace the hydraulic motor in high frequency quenching machine tool gear driven by quenching workpiece -- gearrotation. However, differences in the structure of the gear pump and gear motor two.

    The gear pump rotate in single direction, while the gear motor often require positive and reverse, so the oil pump outlet than the oil outlet, and the gear motor oil inlet size(see Figure 2-1).

    The gear pump adopts the asymmetric unloading groove (pump cover or side), and the gear motor with symmetrical unloading groove.

    · 25 ·

    Torque respectively Ti and T2:

    Ti=Apb[R2 -Rz -R20 (0+2tana)]/2

    T2 =Apb[Rl _R2 -R20 (0-2tana) pitch circle radius in]/2 type R- gear;

    Ap- import and export oil pressure difference (PL - P2).

    The theory of instantaneous torque gear motor for

    Tt - Ti+T2

    T. =Apb (R; -RzOz)

    Pulsating torque gear motor generates periodic between 0= 7 r/2 ~ 7r/2, increase thenumber of teeth, can reduce the pulse interval, the fluctuation is reduced and a uniform change.

    In order to reduce leakage, gear motor gear pump is the same structure with floating bush like floating plate, internal leakage of the same compensation method.


@ 2014 Ningbo peka hydro-motor co.,ltd
@ 2014 Ningbo peka hydro-motor co.,ltd