US 5,871,085 A · Driving apparatus for a compact belt conveyer

Abstract

The belt driving device of the present invention has left and right frames (5, 15) which upper ends are connected by a slide bed (16), an endless belt (20) being latched by a head pulley (21) which is disposed on a head end of frames (5, 15) and a tail pulley (21) disposed on a tail end thereof, and an actuator unit (12) of the belt detachably mounted on the frame under side. A drive pulley (30) is disposed in the actuator unit (12) and is supported by a frame body with a rubber spring so as to contact with an outer surface on the return side belt and inner pulleys (23, 24) are disposed on the frame under side at the actuator unit attaching position so as to contact with the return side belt inner surface. The drive pulley (30) is always pressed and energized to the inner pulley side by the rubber spring and the belt supported between the inner pulley and the drive pulley (30) is friction actuated by pressing the drive pulley from the belt outside. The take-up device can be eliminated from the device by pressing the drive pulley to the belt side.

Claims11

Dependent claims

A driving apparatus for a compact belt conveyor, said driving apparatus comprising:

a frame having head and tail ends and a frame under side;
belt retainer members mounted on the frame head and tail ends;
an endless belt provided between the belt retainer members;
a pair of inner pulleys provided on the frame under side to have a predetermined space therebetween and contacting with a return side belt inner surface;
a belt actuator unit detachably provided at a determined attachment position that includes an attachment position of the inner pulleys of the frame under side and having a drive pulley contacting with a return side belt outer surface of the endless belt and a speed reduction mechanism provided with a motor to actuate the drive pulley;
and
pressing means for holding the endless belt between the inner pulleys and the drive pulley so as to elastically press the drive pulley against a side of the inner pulleys,
the drive pulley being pressed and energized toward the side of the inner pulleys by a rubber spring and the belt held by the inner pulleys and the drive pulley being friction actuated by pressing the drive pulley from the belt outside.

5 more elements

A driving apparatus for a compact belt conveyor, said driving apparatus comprising:

a frame having head and tail ends and a frame under side;
belt retainer members mounted on the frame head and tail ends;
an endless belt provided between the belt retainer members;
a pair of inner pulleys provided on the frame under side to have a predetermined space therebetween and contacting with a return side belt inner surface;
a belt actuator unit detachably provided at a determined attachment position that includes an attachment position of the inner pulleys of the frame under side and having a drive pulley contacting with a return side belt outer surface of the endless belt and a speed reduction mechanism provided with a motor to actuate the drive pulley;
and
pressing means for holding the endless belt between the inner pulleys and the drive pulley so as to elastically press the drive pulley against a side of the inner pulleys,
the actuator unit including a support frame detachable provided on the frame under side, a horizontal axis fixed in a direction orthogonal with the longitudinal direction of the frame in support frame, a movable frame body movably mounted in respect of the horizontal axis, the drive pulley being supported by the movable frame body to be pressed and contacted with the return side belt outer surface;
in which the pressing means comprises elastic members mounted on the periphery of the horizontal axis to provide a torsion moment to the horizontal axis so as to energize the movable frame body to have a one direction rotating tendency and a frame body movably attached in respect of the horizontal axis via elastic members, thereby the drive pulley holding the belt by an elasticity of elastic members to always press and energize the belt to the inner pulley side.

6 more elements

Dependencies are inferred from the claim text.

Driving apparatus for a compact belt conveyer

Life of this patent

Driving apparatus for a compact belt conveyer

Life of this patent

Abstract

Claims11