APPARATUS FOR CONTROLLING THE ANGLE OF A SWASH PLATE OF A HYDRAULIC PUMP

• US 20120198994A1
• Filed: 08/02/2011
• Published: 08/09/2012
• Est. Priority Date: 02/07/2011
• Status: Abandoned Application

• Current Assignee: LS Mtron Limited (LS Corporation)
• Original Assignee: LS Mtron Limited (LS Corporation)
• Inventors: CHOI, Chul Hwan
• Application Number:
  US13/196,204
• Publication Number:
  US 20120198994A1
• Time in Patent Office: Days
• US Class Current: 91/506
• CPC Class Codes: F04B 1/324 by changing the inclination of the swash plate

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.

Claims

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.