Bundle-shaped folded support frame and folding cart

A bundle-shaped folded support frame, comprising a cart frame body, a wheel body assembly used for driving the cart frame body to move, and a pull handle assembly used for pushing and pulling the cart frame body, wherein

• the cart frame body comprises a front shear fork group, a rear shear fork group, a left shear fork group and a right shear fork group, and further comprises a first support stand column rotatably connected to end portions of the two adjacent shear fork groups, a second support stand column rotatably connected to the left shear fork group, a third support stand column rotatably connected to the right shear fork group, and an underframe structure connected among lower portions of each first support stand column, second support stand column and third support stand column;
• the second support stand column and the third support stand column are arranged opposite to each other, the underframe structure comprises a first underframe assembly disposed between the lower portion of the first support stand column at two ends of the front shear fork group and the second support stand column and the third support stand column arranged opposite to each other, and a second underframe assembly disposed between the lower portion of the first support stand column at two ends of the rear shear fork group and the second support stand column and the third support stand column arranged opposite to each other;
• and
• the first underframe assembly and the second underframe assembly are respectively provided with a first mounting member connected to the lower portion of each first support stand column, a second mounting member connected to the lower portion of the second support stand column, a third mounting member connected to the lower portion of the third support stand column, and a first connecting member, a first bottom rod of which two ends are rotatably connected to a lower side of the first connecting member and an upper side of the first mounting member respectively, a second bottom rod of which two ends are rotatably connected to the lower side of the first connecting member and an upper side of the second mounting member respectively, and a third bottom rod of which two ends are rotatably connected to the lower side of the first connecting member and an upper side of the third mounting member respectively, and when the cart frame body is driven to be folded, the front, rear, left and right shear fork groups deform to drive the first support stand columns, the second support stand columns and the third support stand columns to gather with each other, and the first bottom rod, the second bottom rod and the third bottom rod are gathered with each other to drive the first connecting member to move upwards.