Carrier framework

1 . A carrier framework, comprising:

two support frames, wherein:

the two support frames are arranged opposite to each other, and

each of the two support frames comprises:

a first U-shaped rod, wherein the first U-shaped rod comprises a first open end and a first closed end;

a second U-shaped rod, wherein the second U-shaped rod comprises a second open end and a second closed end, and the second open end is rotatably connected to the first closed end; and

connecting rods, wherein each of the connecting rods has an end rotatably connected to the second closed end;

a first connecting assembly, wherein:

two ends of the first connecting assembly are connected to first ends of the two support frames respectively, and

the first connecting assembly comprises:

first connecting members, wherein each of the first connecting members is slidably connected to adjacent ends of two oppositely arranged ones of the connecting rods of the two support frames, and a connecting groove and a protrusion are respectively arranged at the adjacent ends of the two oppositely arranged ones of the connecting rods of the two support frames;

cavities, wherein the cavities are respectively formed in the connecting rods of the two support frames;

springs, wherein each of the springs is arranged in one of two oppositely arranged cavities of the cavities;

slide rails, wherein two adjacent ones of the slide rails are respectively formed on two sides of a respective one of the connecting rods, and the two adjacent ones of the slide rails are in communication with a respective one of the cavities; and

slide rods, wherein each of the slide rods is slidably connected in the two adjacent ones of the slide rails, each of the slide rods is fixedly connected to an end of a respective one of the springs away from the second U-shaped rod, and the slide rods respectively extend through the first connecting members; and

a second connecting assembly, wherein two ends of the second connecting assembly are connected to second ends of the two support frames respectively.

2 . The carrier framework according to claim 1 , wherein the second connecting assembly comprises:

grooves, wherein the grooves are formed at the first open end;

first openings, wherein the first openings are formed on a side of the first U-shaped rod away from the second U-shaped rod, and the first openings are respectively connected to the grooves;

through holes, wherein the through holes are respectively formed on two sides of the first open end, and the through holes are respectively in communication with the grooves;

second connecting members, wherein each of the second connecting members has two ends extending into two oppositely arranged ones of the grooves respectively; and

rivets, wherein the rivets respectively extend through the through holes, two adjacent ones of the rivets extend through a respective one of the second connecting members, the rivets are rotatably connected to the through holes respectively, and the two adjacent ones of the rivets are fixedly connected to the respective one of the second connecting members.

3 . The carrier framework according to claim 2 , wherein

each of the second connecting members comprises a first connecting plate and two second connecting plates, the two second connecting plates are fixedly connected to two sides of the first connecting plate respectively, and the two second connecting plates extend into the two oppositely arranged ones of the grooves respectively.

4 . The carrier framework according to claim 1 , wherein

limiting members are slidably connected to two ends of one of the first U-shaped rods of the two support frames, respectively.

5 . The carrier framework according to claim 4 , wherein

a second opening is formed on each of the limiting members, an elastic member is fixedly connected in the second opening, and the elastic member is in interference fit with the one of the first U-shaped rods of the two support frames.

6 . The carrier framework according to claim 2 , wherein

a length of each of the rivets is greater than an inner diameter of a respective one of the grooves.

7 . A carrier framework, comprising:

two support frames, wherein:

the two support frames are arranged opposite to each other,

each of the two support frames comprises:

a first U-shaped rod, wherein the first U-shaped rod comprises a first open end and a first closed end;

a second U-shaped rod, wherein the second U-shaped rod comprises a second open end and a second closed end, and the second open end is rotatably connected to the first closed end; and

connecting rods, wherein each of the connecting rods has an end rotatably connected to the second closed end, and

limiting members are slidably connected to two ends of one of the first U-shaped rods of the two support frames, respectively,

a second opening is formed on each of the limiting members, an elastic member is fixedly connected in the second opening, and the elastic member is in interference fit with the one of the first U-shaped rods of the two support frames;

a first connecting assembly, wherein two ends of the first connecting assembly are connected to first ends of the two support frames respectively; and

a second connecting assembly, wherein two ends of the second connecting assembly are connected to second ends of the two support frames respectively.