Extension equipment for unloading arm of belt conveyor head of mine shuttle car

The invention discloses mine shuttle car belt conveyor head unloading arm extension equipment which comprises a belt rack, a belt telescopic mechanism is used for adjusting a belt, and the situation that the belt is snapped after an unloading arm of a belt conveyor is extended is avoided; an output shaft of a first driving motor rotates to drive a belt cleaning mechanism to clean the surface of the belt, and the service life of the belt is prolonged; a first chain wheel is matched with a first chain, so that an output shaft of a first driving motor rotates to drive a belt carrier roller on an unloading arm of the belt conveyor to rotate, and then a belt is driven to slide to transport gangue; the support is matched with the sliding rail, so that the output end of the hydraulic rod stretches out and draws back without interfering with the support; the bracket is used for supporting the output end of the hydraulic rod and the extension rod; the bolt is matched with the rack to fix the second extension section;