Loader

Abstract

The present disclosure relates to a loader, including: a frame, including a chassis, and a bearing portion mounted above the chassis; a cab, mounted on the chassis and located in front of the bearing portion; a movable arm, including a front end located in front of the cab, and a rear end located at a rear part of the frame; a rear connecting rod, including a first end hinged with the bearing portion, and a second end hinged with the movable arm; a front connecting rod, including a first end hinged with the bearing portion, and a second end hinged withe movable arm; and a hydraulic cylinder, including a first end hinged with the bearing portion, and a second end hinged with the movable arm, so as to drive the front end of the movable arm to switch between a lower position and a upper position. The bearing portion is located below a rear window of the cab or at a side part of the rear window. By applying the technical solution of the present disclosure, the bearing portion is positioned below the rear window of the cab or located at the side part of the rear window, so that the problem of poor rear view of a skid steer loader in the related art is solved.

1 . A loader, comprising:
 a frame, comprising a chassis ( 8 ), and a bearing portion ( 5 ) mounted above the chassis ( 8 );   a cab ( 6 ), mounted on the chassis ( 8 ) and located in front of the bearing portion ( 5 );   a movable arm ( 3 ), comprising a front end ( 34 ) located in front of the cab ( 6 ), and a rear end located at a rear part of the frame;   a rear connecting rod ( 1 ), comprising a first end ( 11 ) hinged with the bearing portion ( 5 ), and a second end ( 12 ) hinged with the movable arm ( 3 );   a front connecting rod ( 2 ), comprising a first end ( 21 ) hinged with the bearing portion ( 5 ), and a second end ( 22 ) hinged with the movable arm ( 3 ); and   a hydraulic cylinder ( 4 ), comprising a first end ( 41 ) hinged with the bearing portion ( 5 ), and a second end ( 42 ) hinged with the movable arm ( 3 ), so as to drive the front end ( 34 ) of the movable arm ( 3 ) to switch between a lower position and an upper position,   wherein the bearing portion ( 5 ) is located below a rear window ( 61 ) of the cab ( 6 ) or at a side part of the rear window ( 61 ).   
     
     
         2 . The loader according to  claim 1 , wherein the bearing portion ( 5 ) comprises:
 a first bearing portion, wherein an upper end of the first bearing portion and the first end ( 11 ) of the rear connecting rod ( 1 ) are hinged at a first hinge point ( 51 ), and the first bearing portion is lower than the rear window ( 61 ) of the cab ( 6 ); and/or   a second bearing portion, wherein an upper end of the second bearing portion and the first end ( 21 ) of the front connecting rod ( 2 ) are hinged at a second hinge point ( 52 ), and the second bearing portion is located at the side part of the rear window ( 61 ) of the cab ( 6 ).   
     
     
         3 . The loader according to  claim 1 , wherein the second bearing portion is located in front of the first bearing portion and adjacent to a rear wall of the cab ( 6 ). 
     
     
         4 . The loader according to  claim 3 , wherein the second bearing portion is connected to the rear wall of the cab ( 6 ). 
     
     
         5 . The loader according to  claim 1 , wherein the movable arm ( 3 ) comprises:
 a first hinge portion ( 31 ), hinged with the second end ( 12 ) of the rear connecting rod ( 1 );   a second hinge portion ( 32 ), hinged with the second end ( 22 ) of the front connecting rod ( 2 ); and   a third hinge portion ( 33 ), hinged with the second end ( 42 ) of the hydraulic cylinder ( 4 ),   wherein the first hinge portion ( 31 ), the second hinge portion ( 32 ) and the third hinge portion ( 33 ) are arranged on the movable arm ( 3 ) side by side.   
     
     
         6 . The loader according to  claim 5 , wherein the first hinge portion ( 31 ), the second hinge portion ( 32 ) and the third hinge portion ( 33 ) are arranged sequentially from back to front. 
     
     
         7 . The loader according to  claim 5 , wherein
 when the front end ( 34 ) of the movable arm ( 3 ) is located at the lower position, in a horizontal and/or vertical direction, the second hinge portion ( 32 ) is located between the first hinge point ( 51 ) of the first end ( 11 ) of the rear connecting rod ( 1 ) and the bearing portion and the second hinge point ( 52 ) of the first end ( 21 ) of the front connecting rod ( 2 ) and the bearing portion ( 5 ).   
     
     
         8 . The loader according to  claim 5 , wherein when the front end ( 34 ) of the movable arm ( 3 ) is located at the lower position, the second hinge portion ( 32 ) is located below a connecting line between the first hinge portion ( 31 ) and the second hinge point ( 52 ) of the first end ( 21 ) of the front connecting rod ( 2 ) and the bearing portion ( 5 ). 
     
     
         9 . The loader according to  claim 1 , wherein
 when the front end ( 34 ) of the movable arm ( 3 ) is located at the lower position, the second end ( 12 ) of the rear connecting rod ( 1 ) is located rearward and above the first end ( 11 ) of the rear connecting rod ( 1 ); and   when the front end ( 34 ) of the movable arm ( 3 ) is located at the lower position, the second end ( 22 ) of the front connecting rod ( 2 ) is located rearward and below the first end ( 21 ) of the front connecting rod ( 2 ).   
     
     
         10 . The loader according to  claim 1 , wherein
 when the front end ( 34 ) of the movable arm ( 3 ) is located at the upper position, the second end ( 12 ) of the rear connecting rod ( 1 ) is located rearward and above the first end ( 11 ) of the rear connecting rod ( 1 ); and   when the front end ( 34 ) of the movable arm ( 3 ) is located at the upper position, the second end ( 22 ) of the front connecting rod ( 2 ) is located rearward and above the first end ( 21 ) of the front connecting rod ( 2 ).   
     
     
         11 . The loader according to  claim 1 , wherein a third hinge point ( 53 ) of the first end ( 41 ) of the hydraulic cylinder ( 4 ) and the bearing portion ( 5 ) is located rearward and below the first hinge point ( 51 ) of the first end ( 11 ) of the rear connecting rod ( 1 ) and the bearing portion ( 5 ). 
     
     
         12 . The loader according to  claim 1 , wherein when the first hinge point ( 51 ) of the first end ( 11 ) of the rear connecting rod ( 1 ) and the bearing portion ( 5 ) is located rearward and below the second hinge point ( 52 ) of the first end ( 21 ) of the front connecting rod ( 2 ) and the bearing portion ( 5 ). 
     
     
         13 . The loader according to  claim 1 , wherein the movable arm ( 3 ) comprises:
 two arms, respectively located on two sides of the cab ( 6 );   a first cross beam ( 35 ), connected to front ends of the two arms; and   a pedal ( 36 ), mounted on the first cross beam ( 35 ).   
     
     
         14 . The loader according to  claim 1 , wherein during the movement of the front end ( 34 ) of the movable arm ( 3 ) from a first position to a second position, the rear connecting rod ( 1 ) moves counterclockwise first and then moves clockwise, and the front connecting rod ( 2 ) moves clockwise all the time.