IP Library Granted Patent US 12668423
Granted Patent B2
US 12668423 · App. 18/037,446 · Granted Jun 30, 2026

Three-dimensional unloading system capable of unloading goods into container and control method of three-dimensional unloading system

Inventor: Jianqiang Zhu (Zhejiang, CN)
Assignee: Zhejiang Libiao Robotics Co., Ltd.
B65G1/0492B07C3/082B07C5/36B65G1/065B65G1/1378B65G47/50B65G47/962G06Q10/08B07C2501/0063B65G2201/0285B65G2203/0216
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Quick Facts
Patent No.
US 12668423
App. No.
18/037,446
Granted
Jun 30, 2026
Kind
B2
Abstract

Provided are a three-dimensional unloading system capable of unloading goods into a container and a control method of the three-dimensional unloading system. The system comprises: soring platforms; self-navigation carts; parcel identification devices; and positioning devices. The three-dimensional unloading system further comprises more than one shelf, the shelf consisting of a plurality of containers, each container being capable of storing good, and the shelf being mounted at a position close to an unloading outlet; a conveying device, on which a conveying frame is fixed; an unloading device, fixed on the conveying frame, the unloading device being capable of moving to the unloading outlet under the driving of the conveying device so as to receive the goods unloaded from the self-navigation cart, then moving to close to a predetermined container, and unloading the goods in the container; and a server, being wirelessly connected to a controller of the self-navigation cart.

Claims (49)

1 . A three-dimensional unloading system for unloading goods into a container, comprising:

a sorting platform, wherein the sorting platform is provided with a loading inlet and an unloading outlet;

a plurality of self-navigation carts, wherein the plurality of self-navigation carts travel on the sorting platform and unload, at the unloading outlet, the goods carried by the plurality of self-navigation carts;

a parcel identification device, wherein the parcel identification device is installed at the loading inlet of the sorting platform, and identifies the goods placed on the plurality of self-navigation carts; and

a positioning device, wherein the positioning device is configured to perform positioning when the plurality of self-navigation carts are traveling,

wherein the three-dimensional unloading system of for unloading the goods into the container further comprises:

more than one shelf, wherein each of the shelves is composed of a plurality of containers, each of the plurality of containers stores the goods, and the shelves are installed at the unloading outlet;

a conveying device, wherein the conveying device is fixed with a conveying frame;

an unloading device, wherein the unloading device is fixed on the conveying frame, the unloading device moves to the unloading outlet under a driving of the conveying device to carry the goods unloaded from the plurality of self-navigation carts, then moves to a predetermined container, and unloads the goods into the predetermined container; and

a server, wherein the server is connected to controllers of the plurality of self-navigation carts in a wireless manner, and the server is connected to the parcel identification device, a controller of the conveying device, and a controller of the unloading device, in a wire or wireless manner.

2 . The three-dimensional unloading system for unloading the goods into the container according to claim 1 , wherein the unloading device comprises:

a first decelerator;

a rotation motor, wherein a housing of the rotation motor is fixed to a housing of the first decelerator, a rotating shaft of the rotation motor is fixed to an input shaft of the first decelerator, and the rotation motor is electrically connected to the controller of the unloading device;

a rotation bracket, wherein the rotation bracket is fixed to an output shaft of the first decelerator;

a rotation plate, wherein the rotation plate is fixed to the rotation bracket, and the rotation plate is configured to hold the goods;

a second decelerator, wherein a housing of the second decelerator is fixed to the conveying frame;

a swing motor, wherein a housing of the swing motor is fixed to the housing of the second decelerator, a rotating shaft of the swing motor is fixed to an input shaft of the second decelerator, and the swing motor is electrically connected to the controller of the unloading device; and

a swing lever, wherein an end of the swing lever is fixed to an output shaft of the second decelerator, and another end of the swing lever is fixed to the housing of the first decelerator,

wherein a rotation of the swing motor drives the rotation plate and swings the rotation plate to a position above the predetermined container, and a rotation of the rotation motor unloads the goods into the container.

3 . The three-dimensional unloading system for unloading the goods into the container according to claim 2 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

4 . The three-dimensional unloading system for unloading the goods into the container according to claim 1 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

5 . The three-dimensional unloading system for unloading the goods into the container according to claim 4 , wherein the sorting platform is provided as being of a plurality of layers, each layer of the sorting platform is provided with the plurality of self-navigation carts to transport and unload the goods, and each layer of the sorting platform is provided with the parcel identification device and the positioning device.

6 . The three-dimensional unloading system for unloading the goods into the container according to claim 1 , wherein the shelves are movable shelves, and the plurality of containers on the shelves are detachable.

7 . The three-dimensional unloading system for unloading the goods into the container according to claim 6 , wherein each layer of the shelves is provided with two parallel crosspieces, each of the plurality of containers is provided with two corresponding flanges, and the two corresponding flanges of the plurality of containers are pressed on the two parallel crosspieces.

8 . The three-dimensional unloading system for unloading the goods into the container according to claim 1 , wherein the unloading device comprises:

a first unloading driving wheel and a second unloading driving wheel, wherein shaft cores of the first unloading driving wheel and the second unloading driving wheel are rotatably connected to the conveying frame, respectively;

a conveying belt, wherein the conveying belt is connected to the first unloading driving wheel and second unloading driving wheel, and the conveying belt is configured to carry the goods; and

an unloading motor, wherein a housing of the unloading motor is fixed to the conveying frame, a rotating shaft of the unloading motor is fixed to the shaft core of the first unloading driving wheel or the shaft core of the second unloading driving wheel, the unloading motor is electrically connected to the controller of the unloading device, and the unloading motor, when rotating, unloads the goods.

9 . The three-dimensional unloading system for unloading the goods into the container according to claim 8 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

10 . The three-dimensional unloading system for unloading the goods into the container according to claim 8 , wherein the unloading motor is a gear motor.

11 . The three-dimensional unloading system for unloading the goods into the container according to claim 10 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

12 . The three-dimensional unloading system for unloading the goods into the container according to claim 8 , wherein the unloading device comprises a plurality of carrier wheels, and the carrier wheels are configured to support a middle part of the conveying belt to increase a maximum carrying weight for the goods.

13 . The three-dimensional unloading system for unloading the goods into the container according to claim 12 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to a position close to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

14 . The three-dimensional unloading system for unloading the goods into the container according to claim 1 , wherein the conveying device comprises a vertical moving device, and the vertical moving device is provided with:

a first hollow lever, wherein the first hollow lever is vertically fixed relative to the ground, the first hollow lever is provided with an open end, and two outer sides of the first hollow lever are provided with grooves;

a first synchronous belt wheel and a second synchronous belt wheel, wherein the first synchronous belt wheel and the second synchronous belt wheel are rotatably fixed inside the first hollow lever at two ends, respectively;

a synchronous belt, wherein the synchronous belt is connected to the first synchronous belt wheel and the second synchronous belt wheel;

an actuating motor, wherein a housing of the actuating motor is fixed to the first hollow lever, a rotating shaft of the actuating motor is fixed to a shaft core of the first synchronous belt wheel or a shaft core of the second synchronous belt wheel, and the actuating motor is electrically connected to the controller of the conveying device; and

a sliding block, wherein the sliding block is provided with a convex block and two sliding rails, the convex block is embedded into the open end of the first hollow lever and fixed to the synchronous belt, the sliding rails only move back and forth along the grooves, and the sliding block is fixed to the conveying frame.

15 . The three-dimensional unloading system for unloading the goods into the container according to claim 14 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

16 . The three-dimensional unloading system for unloading the goods into the container according to claim 14 , wherein the actuating motor is provided with a decelerating mechanism.

17 . The three-dimensional unloading system for unloading the goods into the container according to claim 16 , wherein when the plurality of self-navigation carts unload the goods, the unloading device moves to the goods, and wherein when the goods contact the unloading device, the unloading device moves slowly downward, until the goods completely slide onto the unloading device.

18 . The three-dimensional unloading system for unloading the goods into the container according to claim 14 , wherein the conveying device further comprises:

a lateral moving device, wherein a structure of the lateral moving device is the same as that of the vertical moving device, and a second hollow lever of the lateral moving device is fixed horizontally to the ground through a bracket, the first hollow lever in the vertical moving device is fixed to a sliding block in the lateral moving device, and an actuating motor in the lateral moving device is electrically connected to the controller of the conveying device.

19 . The three-dimensional unloading system for unloading the goods into the container according to claim 18 , wherein two lateral moving devices are provided, one vertical moving device is provided, an upper part and a lower part of the vertical moving device are fixed to the sliding blocks of the two lateral moving devices respectively.

20 . A control method for a three-dimensional unloading system for unloading goods into a container, the control method being executed in a three-dimensional unloading system that includes a sorting platform having a loading inlet and an unloading outlet, a plurality of self-navigation carts disposed to travel on the sorting platform, a parcel identification device installed at the loading inlet of the sorting platform, a positioning device configured to perform positioning of the plurality of self-navigation carts, more than one shelf installed at the unloading outlet and composed of a plurality of containers, including a predetermined container, a conveying device fixed with a conveying frame, an unloading device fixed on the conveying frame, and a server communicatively connected to controllers of the plurality of self-navigation carts, the parcel identification device, the conveying device, and the unloading device, wherein the control method comprises steps of:

S 1 , moving, by the conveying device, the unloading device to the goods on the plurality of self-navigation carts located at the unloading outlet, and starting to unload the goods by the plurality of self-navigation carts;

S 2 , the unloading device descending slowly, when the goods contact the unloading device, until the goods slide onto the unloading device; and

S 3 , the conveying device returning to a normal velocity, and conveying the unloading device to the predetermined container to unload.