Apparatus for controlling the angle of a swash plate of a hydraulic pump

Abstract

The present disclosure relates to an apparatus for controlling the angle of a swash plate of a hydraulic pump, and more particularly, to an apparatus for controlling the angle of a swash plate of a hydraulic pump in order to fix the swash plate at a desired angle by using an electric motor and an electromagnet. The apparatus for controlling the angle of a swash plate of a hydraulic pump includes a swash plate and a swash plate shaft coupled to the swash plate to be rotatable, and the apparatus further includes: an electric motor which directly connects the swash plate shaft or transmits a rotating force through a link connected to the swash plate shaft to pivot the swash plate; and an electromagnet which generates a magnetic force so that the swash plate moving according to the operation of the electric motor is fixed at a target angle.

1 . An apparatus for controlling the angle of a swash plate of a hydraulic pump, which includes a swash plate and a swash plate shaft coupled to the swash plate to be rotatable, the apparatus comprising:
 an electric motor which directly connects the swash plate shaft or transmits a rotating force through a link connected to the swash plate shaft to pivot the swash plate; and   an electromagnet which generates a magnetic force so that the swash plate moving according to the operation of the electric motor is fixed at a target angle.   
     
     
         2 . The apparatus for controlling the angle of a swash plate of a hydraulic pump according to  claim 1 , wherein the electromagnet is mounted in the electric motor to apply a magnetic force to a rotary shaft of the electric motor so that the electric motor stops rotation. 
     
     
         3 . The apparatus for controlling the angle of a swash plate of a hydraulic pump according to  claim 1 , wherein the electromagnet is disposed adjacent to the link which connects the swash plate shaft to the electric motor and applies a magnetic force to the link so that the link is fixed. 
     
     
         4 . The apparatus for controlling the angle of a swash plate of a hydraulic pump according to  claim 1 , wherein the electromagnet is switched off while the electric motor is operating, and the electromagnet is switched on if the swash plate reaches a target angle so that the swash plate is fixed due to the magnetic force.