Slope controllable foot plate for golf swing practice apparatus

1. A slope control apparatus of a foot plate for a golf practice apparatus, comprising:

a swing plate control section for receiving slope information and generating a control signal for use in controlling a slope of the foot plate;

longitudinal and transverse actuating motors for providing power for use in controlling longitudinal and transverse slopes of the foot plate under the control of the swing plate control section;

converting devices connected to respective screw shafts of the longitudinal and transverse actuating motors to convert the rotational driving force of the longitudinal and transverse actuating motors into a linear driving force;

longitudinal and transverse actuating hydraulic cylinders of which inner oil pressure at both sides is regulated by means of the linear driving force converted by the converting devices; and

slope control hydraulic cylinders for controlling the lifting of front, rear, left and right sides of the foot plate by means of the inner oil pressure at both sides of each of the longitudinal and transverse actuating hydraulic cylinders.

2. The apparatus as claimed in claim 1 , wherein the converting devices comprise:

screw bolts fastened to the screw shafts;

connection shafts connected to the screw bolts to convert rotational force of the screw bolts into linear motions; and

oil pressure regulating units fastened to the connection shafts to regulate the inner oil pressure at the both sides of each of the longitudinal and transverse actuating hydraulic cylinders.

3. The apparatus as claimed in claim 1 or 2 , wherein the slope control apparatus is installed at a lower portion of the foot plate.

4. The apparatus as claimed in claim 3 , further comprising:

a reinforcing block installed at the lower portion of the foot plate, formed with a space portion therein, and formed with through-holes at the front, rear, left and right sides thereof.

5. The apparatus as claimed in claim 4 , further comprising:

a support plate provided at a lower portion of the slope control apparatus;

a slope control plate provided at the top of the slope control hydraulic cylinders; and

upper and lower plate reinforcing bars formed at the center between the support plate and the slope control plate, inserted into the through-holes of the reinforcing block and connected through vertical connecting members to an upper surface of the support plate and a lower surface of the slope control plate.

6. The apparatus as claimed in claim 5 , further comprising:

bearings installed at connections of the upper and lower plate reinforcing bars to the reinforcing block and connections of the slope control hydraulic cylinders to the slope control plate to smoothly control the slope of the slope control plate.

7. A golf practice apparatus using the slope control apparatus according to claim 1 .

8. A method of controlling the slope of a foot plate for a golf practice apparatus, comprising:

a control signal generation step of receiving slope information and generating a control signal for use in controlling the slope of the foot plate;

a motor driving step of driving longitudinal and transverse actuating motors for providing power for use in controlling longitudinal and transverse slopes of the foot plate in response to the control signal;

a conversion step of converting the rotational driving force in the motor driving step into a linear driving force;

an oil pressure regulation step of regulating the inner oil pressure at both sides of each of longitudinal and transverse actuating hydraulic cylinders by means of the linear driving force converted in the conversion step; and

a slope control step of controlling the lifting of front, rear, left and right sides of the foot plate by means of the inner oil pressure at both sides regulated in the oil pressure regulation step.

9. A method of manufacturing a slope control apparatus of a foot plate for a golf practice apparatus, comprising the steps of:

installing a swing plate control section for receiving slope information and generating a control signal for use in controlling a slope of the foot plate;

installing longitudinal and transverse actuating motors, for providing power for use in controlling longitudinal and transverse slopes of the foot plate under the control of the swing plate control section;

installing converting devices connected to respective screw shafts of the longitudinal and transverse actuating motors to convert the rotational driving force of the longitudinal and transverse actuating motors into linear driving force;

installing longitudinal and transverse actuating hydraulic cylinders of which inner oil pressure at both sides is regulated by means of the linear driving force converted by the converting devices; and

installing slope control hydraulic cylinders for controlling the lifting of front, rear, left and right sides of the foot plate by means of the inner oil pressure at both sides of each of the longitudinal and transverse actuating hydraulic cylinders.

10. A method of manufacturing a golf practice apparatus using the method of manufacturing the slope control apparatus according to claim 9 .