Roller-type conveying device for fruit and vegetable sorting

A roller-type conveying device for fruit and vegetable sorting, comprising a chain assembly, and conveying units, wherein fruits and vegetables are placed on the conveying units;

• the chain assembly comprises a drive chain and a chain support bar;
• the drive chain is arranged on the chain support bar;
• the conveying units are arranged along with each chain link of the drive chain;
• each conveying unit comprises outer rollers, roller frames, pin shafts, rubber bushings, a roller shaft, and a support base;
• the two outer rollers are fixed coaxially set two ends of the roller shaft, and the roller shaft is equipped with the rubber bushings;
• the roller shaft is movably set in a special-shaped hole slot at a top of the roller frame;
• the roller shaft is arranged axially perpendicular to a transmission direction of the drive chain;
• a bottom of the roller frame is movably connected to a top of the support base through the pin shaft and the special-shaped hole slot;
• the support base is mounted on the drive chain;
• the main body of the roller frame is a U-shaped frame comprising a bottom plate located in the middle and vertical plates connected on two sides of the bottom plate;
• the vertical plates on the two sides are provided with roller shaft sliding slots on an upper side along the transmission direction of the drive chain;
• the roller shaft sliding slots are vertical kidney-shaped slots along a length direction;
• the roller shaft is movably mounted and moves up and down in the two roller shaft sliding slots arranged in the vertical plates on the two sides;
• a support claw is connected between the two vertical plates along with a lower side of the moving direction of the drive chain;
• the support claw is arranged obliquely upward from a middle of the vertical plates in the transmission direction of the drive chain;
• the fruits and vegetables are placed in a recessed portion formed between the support claw and the vertical plates;
• the fruits and vegetables are supported by the support claw and a middle of the roller shaft;
• a bottom surface of the bottom plate of the roller frame is fixed with the rectangular base connection portion;
• the rectangular base connection portion is provided with the two pin shaft mounting holes, wherein the two pin shaft mounting holes are symmetrical and each pin shaft is mounted in each pin shaft mounting hole;
• the support base comprises two parts:
• a chain base located in a lower part and a roller frame base located in an upper part;
• the chain base is connected to the drive chain;
• the roller frame base comprises two side plates arranged oppositely along the transmission direction of the drive chain;
• a pin shaft sliding slot set is set on one side of the two side plates, and another pin shaft sliding slot set is set on the other side of the two side plates, wherein each pin shaft sliding slot set comprises two pin shaft sliding slots, and the two pin shaft sliding slots are special-shaped and located on the two side plates respectively and along with the same transmission direction of the drive chain;
• the two pin shaft sliding slots on each side plate are symmetrically arranged;
• a rectangular mounting slot is formed between the two side plates roller frame base, and the rectangular base connection portion is embedded in the rectangular mounting slot;
• each pin shaft inside the two pin shaft mounting holes on the rectangular base connection portion passes through one pin shaft sliding slot set;
• the pin shaft passes through two pin shaft sliding slots in the pin shaft sliding slot sets, so that the bottom of the roller frame is movably connected to the top of the support base, and then the roller frame and the support base are adjusted to form different postures to achieve different working states;
• two sides of the rectangular base connection portion of the roller frame are symmetrically provided with two limit bevels having chamfered structures, and each of the two limit bevels on each side comprises a first limit bevel and a second limit bevel arranged from bottom to top;
• a bottom of the rectangular mounting slot between the two side plates of the roller frame base is equipped with a third limit bevel, and the third limit bevel tilts upward and outward;
• and
• the third limit bevel is configured to cooperate with the first limit bevel and the second limit bevel on the roller frame to achieve a position limiting function.