Complete swivel type backhoe vehicle

A backhoe vehicle comprising;

• a chassis (3) including traveling devices (1) on lateral sides thereof,
• an upper carriage (5) including a driver's section (6) on a front portion thereof and swivellable 360 degrees on said chassis (3),
• an excavating assembly (4) including a boom (10), a bucket arm (11) and a bucket (12), said boom (10) defining a first bent portion (18) and a second bent portion (21) so that a distal end of said boom (10) is inclined in a direction in which said boom (10) is lowered,
• an excavating assembly holder (14) attached to a front region of said upper carriage (5) and adjacent a transversely mid-position of the vehicle to be pivotable on a vertical axis (Y), said boom (10) being connected to said holder (14) to be pivotable on a horizontal rotary shaft (20), and
• a boom cylinder (13A) for causing pivotal movements of said excavating assembly (4), said boom cylinder (13A) being connected at one end to said boom (10) and at the other end selectively to one of a first pivot member (19A) and a second pivot member (19B) defined on said holder (14), said second pivot member (19B) being disposed at a lower rearward position with respect to said first pivot member (19A),
• wherein said first bent portion (18) is defined substantially at a longitudinally mid-position of said boom (10), and said second bent portion (21) is defined between said first bent portion (18) and said rotary shaft (20), a distance between said rotary shaft (20) and said second bent portion (21) being substantially equal to a distance between said rotary shaft and said first pivot member (19A).