CN112340336A

CN112340336A - Sorting equipment and sorting method

Info

Publication number: CN112340336A
Application number: CN202011167939.9A
Authority: CN
Inventors: 王佳; 刘旭
Original assignee: Beijing Jingdong Qianshi Technology Co Ltd
Current assignee: Beijing Jingdong Qianshi Technology Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-09

Abstract

The present disclosure provides a sorting device comprising: the track is provided with a plurality of belt trolleys which can move along the direction parallel to the track; the belt trolley comprises at least two mutually independent belts arranged in parallel and a roller corresponding to each belt, the belts are wound on the rollers corresponding to the belts, the rollers are used for driving the belts to move, and the moving direction of the belts is vertical to that of the belt trolley; wherein, at least two rollers on the same side of the belt trolley can rotate independently and synchronously. The track comprises at least two layers of straight sections and at least two sections of circular arc sections, the at least two sections of circular arc sections connect the at least two layers of straight sections to form a three-dimensional closed loop type, the moving directions of the belt trolleys on the two adjacent layers of straight sections are opposite, and two guide rails of the track are arranged in a staggered mode along the extending direction of the track. The present disclosure also provides a sorting method.

Description

Sorting equipment and sorting method

Technical Field

The disclosure relates to the field of warehouse logistics, and more particularly to sorting equipment and a sorting method.

Background

With the rapid development of the logistics automation industry, various sorting and transmission equipment is produced. The main sorting machine in the current market comprises a linear sorting machine and a loop sorting machine, wherein the linear sorting machine adopts a longitudinal annular track to perform parcel sorting, and the loop sorting machine performs parcel sorting through a horizontal long circular loop track.

In implementing the disclosed concept, the inventors found that there are at least the following problems in the related art:

one, annular sorting machine and straight line sorting machine all can't solve the unable problem of sorting smallclothes, well piece and long piece simultaneously of circulation letter sorting mode. Secondly, the whole area occupied by the annular sorting machine is large, the number of the belt trolleys is large, and more resources are occupied to realize the sorting of the packages. Thirdly, the occupied area of the linear sorting machine is reduced compared with that of the annular sorting machine, but a larger occupied area is still needed, and the utilization rate of the linear sorting machine to the belt trolley is low.

Disclosure of Invention

In view of the above, the present disclosure provides a sorting apparatus and a sorting method for simultaneously sorting parcels of different sizes.

One aspect of the present disclosure provides a sorting device including: the track is provided with a plurality of belt trolleys which can move along the direction parallel to the track; the belt trolley comprises at least two mutually independent belts arranged in parallel and a roller corresponding to each belt, the belts are wound on the rollers corresponding to the belts, the rollers are used for driving the belts to move, and the moving direction of the belts is vertical to that of the belt trolley; wherein, at least two rollers on the same side of the belt trolley can rotate independently and synchronously.

According to the embodiment of the disclosure, the track comprises at least two layers of straight sections and at least two sections of circular arc sections, the at least two layers of straight sections are connected by the at least two sections of circular arc sections to form a three-dimensional closed loop, and the moving directions of the belt trolleys are opposite on the two adjacent layers of straight sections.

According to the disclosed embodiment, the sorting equipment further comprises a limiting wheel chain set, the limiting wheel chain set is arranged along the extending direction of the track, the limiting wheel chain set is connected with the track and the belt trolley, the limiting wheel chain set comprises a first limiting wheel and a second limiting wheel, the central shafts of the first limiting wheel and the second limiting wheel are perpendicular to each other, and the first limiting wheel and the second limiting wheel are arranged in a staggered mode along the extending direction of the track.

According to the embodiment of the disclosure, one side of the belt trolley, which is far away from the belt, is further provided with the supporting wheel and the guide wheel, the supporting wheel is used on the rail to support the belt trolley, and the guide wheel is rotatably connected with the first limiting wheel to support and guide the belt trolley.

According to the embodiment of the disclosure, the rail comprises two guide rails which are arranged in a staggered mode along the extending direction of the straight section of the rail. The belt trolley moves on the track, and the guide wheel is used for guiding the belt trolley in the moving process.

According to the embodiment of the disclosure, the belt trolley is further provided with an electric slip ring and a magnetic pole plate, the track is further provided with a linear motor, a sliding contact line and a sliding contact line collector, the electric slip ring is connected with the sliding contact line collector and is in contact with the sliding contact line, and the linear motor drives the belt trolley through the magnetic pole plate.

According to the embodiment of the disclosure, at least one side of the belt trolley is provided with a lattice slideway in the moving direction of the belt, and the outlet end of the lattice slideway is provided with a container.

According to the embodiment of the present disclosure, the belt is further provided with a guide structure.

According to the embodiment of the disclosure, in the moving direction of the belt, the roller on one side of the belt trolley is a motor roller, and the roller on the other side of the belt trolley is a driven roller.

According to the embodiment of the disclosure, in the moving direction of the belt, the supporting wheel and the guiding wheel are arranged on each side of the belt trolley at the same time.

Another aspect of the present disclosure provides a sorting method based on the above sorting apparatus, including: acquiring the number of belts occupied by the belt trolley; and controlling the rollers corresponding to the occupied belts to synchronously rotate, and loading the packages into a container through the grid slide ways corresponding to the belt trolleys.

The sorting equipment and the sorting method provided by the embodiment of the disclosure have the following advantages at least:

according to the embodiment of the disclosure, owing to set up the belt dolly into a car multi-belt formula, the cylinder at every belt both ends can independently rotate, also can rotate with the cylinder synchronization that adjacent belt corresponds, when the letter sorting smallclothes, for example can pass through single belt letter sorting, when major possession in the letter sorting, for example can drive a plurality of belts through the coaxial synchronous rotation of a plurality of adjacent cylinders and sort, so at least partially overcome the unable technical problem of letter sorting smallclothes, medium size and long piece simultaneously of circulation letter sorting mode, and then reached the technological effect of adaptation not unidimensional parcel letter sorting simultaneously.

According to the embodiment of the disclosure, the track for the belt trolley to run is set to be the three-dimensional closed-loop track formed by at least two layers of tracks, so that the technical problem that the traditional sorting machine occupies a large area is at least partially solved, the space utilization rate is further improved, and resources are saved. And on two adjacent layers of tracks, the belt trolleys have opposite movement directions, so that the movement inertia borne by the whole sorting equipment is more balanced, the stress is improved, and the vibration is reduced.

According to the embodiment of the disclosure, the guide wheel supporting wheels are arranged on the belt trolley, the first limiting wheels and the second limiting wheels which are perpendicular to each other are arranged on the running track, the first limiting wheels and the second limiting wheels are distributed in a staggered mode, and the structures are mutually combined to position the belt trolley, so that the belt trolley always keeps horizontal when moving on the track, and stable conveying of packages is guaranteed. Further, on this basis, utilize the electrical slip ring to solve the power supply mode under the dolly keeps the horizontal motion prerequisite, combine linear electric motor drive belt dolly, form circulation power, need not provide power through traditional sprocket, can save the machining volume, let equipment lightweight.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure with reference to the accompanying drawings, in which:

fig. 1 schematically shows an overall structural view of a sorting apparatus according to an embodiment of the present disclosure;

FIG. 2 schematically illustrates an enlarged block diagram of a sorting apparatus according to an embodiment of the present disclosure;

FIG. 3 schematically illustrates a block diagram of a belt cart according to an embodiment of the disclosure;

FIG. 4 schematically illustrates a block diagram of a drum according to an embodiment of the present disclosure;

fig. 5 schematically illustrates a mounting position view of a drum according to an embodiment of the present disclosure;

FIG. 6 schematically illustrates a block diagram of a spacing wheel chain set according to an embodiment of the disclosure;

FIG. 7 schematically illustrates a connection diagram of a belt trolley and a spacing wheel chain set according to an embodiment of the disclosure;

FIG. 8 schematically illustrates a block diagram of a guide wheel and support wheel according to an embodiment of the disclosure;

FIG. 9 schematically shows a block diagram of a drive circuit according to an embodiment of the disclosure;

FIG. 10 schematically illustrates a block diagram of a magnetic pole plate according to an embodiment of the present disclosure;

FIG. 11 schematically illustrates a front view of a belt cart according to an embodiment of the present disclosure;

FIG. 12 schematically illustrates a bottom view of a belt cart according to an embodiment of the disclosure;

fig. 13 schematically illustrates a flow chart of a sorting method of a sorting apparatus according to an embodiment of the disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

Fig. 1 schematically shows an overall structural view of a sorting apparatus according to an embodiment of the present disclosure, fig. 2 schematically shows an enlarged structural view of a sorting apparatus according to an embodiment of the present disclosure, fig. 3 schematically shows a structural view of a belt cart according to an embodiment of the present disclosure, fig. 4 schematically shows a structural view of a drum according to an embodiment of the present disclosure, and fig. 5 schematically shows a mounting position view of a drum according to an embodiment of the present disclosure.

Referring to fig. 1-5, embodiments of the present disclosure provide a sorting apparatus adapted to sort packages of different sizes, which in embodiments of the present disclosure may include, for example:

the track 1 is provided with a plurality of belt trolleys 2, and the belt trolleys 2 can move along the direction parallel to the track 1 (for example, from left to right or from right to left in the direction shown in fig. 1 or fig. 2). The movement of the belt trolley can drive the movement of the packages, so that the packages are sorted.

In the disclosed embodiment, the belt trolley 2 may be designed as a vehicle with multiple belts. Specifically, the belt trolley may include, for example, at least two mutually independent belts 21 arranged in parallel, and a roller 22 corresponding to each belt 21, the belt 21 being wound around the corresponding roller 22, the roller 22 being used for driving the belt 21 to move, and the moving direction of the belt 21 being perpendicular to the moving direction of the belt trolley 2. The number of belts 21 and rollers 22 can be designed according to the size of the packages to be sorted, for example, the belt car 2 shown in fig. 3 is provided with 3

belts

21 and 3 rollers 22 on each side. The belt trolley 2 can also be provided with a supporting plate 26 and a roller supporting plate 27, the supporting plate 26 can support the belt trolley on the track 1, and the roller supporting plate 27 is used for supporting the roller 22.

In the embodiment of the present disclosure, at least two rollers 22 on one side of the belt trolley may be configured as coaxial rollers (as shown in fig. 4), or may be configured to rotate non-coaxially but synchronously, and may control the rotation of each roller 22 independently, or may control all the rollers 22 to rotate coaxially and synchronously, where synchronous rotation means that the rotation directions of the rollers are the same and the angular velocities are the same. Through the design mode of the belt trolley, the belt trolley can be suitable for sorting packages of different sizes. Referring to fig. 2, for example, when small packages S are sorted, the small packages S are placed on the belt trolley 2, and one belt 21 is occupied due to the small size of the small packages S, and at this time, the rollers 22 corresponding to the occupied belt 21 are controlled to rotate so as to sort the small packages S to the corresponding containers. When the medium-sized packages M are sorted, the medium-sized packages M are placed on the belt trolley 2, the medium-sized packages M need to occupy three belts 21 due to the large size of the medium-sized packages M, and at the moment, the rollers 22 corresponding to the three belts 21 are controlled to coaxially and synchronously rotate, so that the medium-sized packages M can be sorted to corresponding containers.

In the embodiment of the present disclosure, one of the rollers 22 on both sides of each belt 21 may be set as a driving roller (motorized roller), and the other roller 22 may be set as a driven roller, so that the driving roller drives the driven roller to rotate. It is also possible to provide the rollers 22 on both sides of each belt 21 as active rollers (motorized rollers), but to ensure that the rollers rotate synchronously, i.e. in the same direction and at the same angular speed. Preferably, the first mode is selected by the embodiment of the present disclosure to save resources.

Therefore, the sorting equipment designed by the embodiment of the disclosure at least partially overcomes the technical problem that small, medium and long pieces cannot be simultaneously sorted in a circulating sorting mode, and further achieves the technical effect of simultaneously adapting to sorting of packages with different sizes.

Referring to fig. 1 and fig. 2, in the embodiment of the present disclosure, the track 1 of the sorting apparatus may be a three-dimensional closed-loop track formed by at least two layers of tracks, wherein the moving tracks of all the trolleys may rotate upward in an S-shape or downward in an S-shape, and the specific rotating direction depends on actual requirements. Through this kind of design, under the little condition of letter sorting equipment area, utilize the utilization ratio that the structure advantage can improve the space. On the basis of this type track design, on the adjacent two-layer track, the direction of motion of belt dolly 2 can be opposite, can improve the utilization ratio of dolly on the one hand, and on the other hand can let the whole motion inertia that receives of letter sorting equipment more balanced, improves the atress, alleviates vibrations.

In the disclosed embodiment, the belt trolley 2 is kept horizontal (parallel to the sea level) at any position of the track 1, which ensures a smooth transportation of the packages. The mode used for keeping the vehicle body horizontal can be realized by utilizing a pair of closed-loop rails which are staggered left and right, fixing two points on two sides of the belt trolley 2, arranging a guide wheel and a support wheel on the belt trolley 2 and distributing a limiting wheel chain group on the two rails. This is described in more detail below with reference to fig. 6-8.

Fig. 6 schematically shows a machine structure diagram of a guide wheel and a support wheel according to an embodiment of the disclosure, fig. 7 schematically shows a structure diagram of a spacing wheel chain set according to an embodiment of the disclosure, and fig. 8 schematically shows a connection diagram of a belt trolley and the spacing wheel chain set according to an embodiment of the disclosure.

In the embodiment of the disclosure, the positioning of the belt trolleys is specifically realized to ensure that the belt trolleys are always kept horizontal and the space between the trolleys is controlled by the following structure:

as shown in fig. 6, the sorting device further includes a limiting wheel chain set 3, the limiting wheel chain set 3 is arranged along the extending direction of the track 1, and the limiting wheel chain set 3 is connected with the track 1 and the belt trolley 2. The central axes of the first limiting wheel 31 and the second limiting wheel 32 may be generally perpendicular to each other, and the first limiting wheel 31 and the second limiting wheel 32 may be generally distributed in a staggered manner along the track 1. The limiting wheel chain set 3 is connected together in a segmented mode like a chain to form closed-loop chain transmission.

As shown in fig. 7, the track 1 generally comprises two guide rails (for example, one rail above the other in the direction shown in fig. 7) which respectively carry the two sides of the belt trolley 1 in the moving direction of the belt 21. The two guide rails are arranged along the extending direction of the straight section of the track 1 in a staggered manner (for example, the guide rail on the upper side is arranged close to the guide rail on the lower side in a staggered manner in the direction shown in fig. 7), the first connecting point A and the second connecting point B on the two sides of the belt trolley 2 can be respectively connected with the first limiting wheel 31 on the two guide rails of the track 1 in a rotating manner, along the moving direction of the belt 21, the first connecting point A and the second connecting point B are not on the same straight line, so that in the process that the belt trolley runs from the upper layer to the lower layer of the track 1, when passing through the bending section of the track, the A connecting point is always on the left side (in the direction shown in fig. 7) of the B connecting point, the two tracks act on the belt trolley through the connecting point A, B, so that the belt trolley after being bent is balanced and not turned over, the belt 21 of the belt, thereby guarantee that belt trolley 2 can both sort on the upper strata of track 1 and get off.

As shown in fig. 8, two cars on one side of the belt trolley 2, which is far away from the belt 21, can be provided with a supporting wheel 23 and a guide wheel 24, the supporting wheel 23 can directly act on the track 1 to support the belt trolley 2, the guide wheel 24 is rotatably connected with a first limiting wheel 31, shafts arranged inside the cars can rotate mutually to support and guide the belt trolley 2. Because the guide wheel 24 is rotatably connected with the first limiting wheel 31 and the guide wheel 24, the second limiting wheel 32 perpendicular to the first limiting wheel 31 is added to limit the belt trolley 2 left and right (in the direction shown in fig. 7), and further, the belt trolley 2 can be ensured to move orderly on the track 1. For better balance, the support wheels 23 and the guide wheels 24 on the belt carriage 2 may be, for example, distributed in pairs, i.e., one support wheel 23 and one guide wheel 24 are provided on each side of the belt carriage 2 in the moving direction of the belt 21, the support wheel 23 on one side and the support wheel 23 on the other side are at both ends of a diagonal, the guide wheel 24 on one side and the guide wheel 24 on the other side are at both ends of the diagonal, and the rotating axes of the support wheels 23 and the guide wheels 24 may be set to be one axial length and the other axial length as viewed in the moving direction of the belt 21. Further, the belt carriages 2 may be connected between each other outside the rotation shaft of the support wheel 23 or the guide wheel 24 by a connection rod so that the belt carriages are connected in series with each other, and the connection rod may rotate about the rotation shaft.

Through the structures shown in fig. 6 to 8, when the belt trolley 2 moves on the track 1, the belt trolley can be controlled to be always kept in a horizontal state and the distance between the belt trolleys can be controlled.

Therefore, the sorting equipment designed by the embodiment of the disclosure at least partially overcomes the technical problem that the traditional sorting machine occupies a large area, so that the space utilization rate is improved, and the resources are saved. And on two adjacent layers of tracks, the moving directions of the belt trolleys are opposite, so that the moving inertia borne by the whole sorting equipment is more balanced, the stress is improved, the vibration is reduced, and the utilization rate of the belt trolleys can be improved.

Based on the design of the above embodiment of the present disclosure, in the process of the trolley bypassing, the trolley body always keeps horizontal, and the trolley can be considered to rotate relative to the track, so that the power supply mode can be solved by using the electrical slip ring on the premise that the trolley always keeps horizontal. This is described in more detail below with reference to fig. 9-12.

Fig. 9 schematically illustrates a structure view of a driving circuit according to an embodiment of the present disclosure, fig. 10 schematically illustrates a structure view of a magnetic pole plate according to an embodiment of the present disclosure, fig. 11 schematically illustrates a front view of a belt trolley according to an embodiment of the present disclosure, and fig. 12 schematically illustrates a bottom view of the belt trolley according to an embodiment of the present disclosure.

As shown in fig. 9-12, the belt trolley 2 may further be provided with an electrical slip ring 25 and a magnetic pole plate 26, the electrical slip ring 25 may be disposed at two ends of the belt trolley 2, for example, the magnetic pole plate 26 may be disposed at a side facing away from the belt 21, the magnetic pole plate 26 may be clamped by an aluminum profile 28, and the magnetic pole plate 26 is fixed on the support structure 210 through the support column 29. The track 1 can also be provided with a linear motor 4, a trolley line 5 and a trolley line collector 6, an electric slip ring 25 can be connected with the trolley line collector 6 and then contacted with the trolley line 5, the linear motor 4 drives the belt trolley 2 through a magnetic pole plate 26, wherein the trolley line collector 6 is fixed on the track 1 through a collector support connecting rod 61.

Because the belt trolleys 2 can be connected in series, the electric slip ring 25, the trolley line current collector 6 and the trolley line 5 can drive the magnetic pole plate 26 on each belt trolley 2 through the linear motor 4 to realize the integral circular motion of the belt trolleys 2, namely, each trolley can be endowed with power through the linear motor.

Therefore, the belt trolley always keeps horizontal when moving on the rail through the sorting equipment designed by the embodiment of the disclosure, and stable conveying of packages is guaranteed. Further, on this basis, utilize the electrical slip ring to solve the power supply mode under the dolly keeps the horizontal motion prerequisite, combine linear electric motor drive belt dolly, form circulation power, need not provide power through traditional sprocket, can save the machining volume, let equipment lightweight.

In embodiments of the present disclosure, a guide structure may also be provided on the belt 21, which may be used to prevent the packages from moving off the belt 21 during sorting of the packages.

In the embodiment of the present disclosure, at least one side of the belt trolley 2 is generally provided with a lattice slideway 7 in the moving direction of the belt 21, the outlet end of the lattice slideway 7 is generally provided with a container 8, and packages sorted by the belt 21 can slide into the container 8 through the lattice slideway 7 and a lattice 81 corresponding to the outlet end of the lattice slideway 7 on the container 8.

Because the sorting equipment of the embodiment of the disclosure is in a three-dimensional warehouse form, the containers 8 are positioned at a position higher than the ground, and the replacement is inconvenient. Thus, embodiments of the present disclosure also provide a way to replace the cargo box 8.

The first method is as follows: the steel platform with the same height and the same layer number as the three-dimensional warehouse can be built and manually replaced.

The second method comprises the following steps: the cargo box can be replaced by a plurality of high-position forklifts, and the high-position forklifts can be unmanned forklifts for example.

The third method comprises the following steps: a group of stackers can be respectively arranged at two sides of the sorting line to automatically replace the containers.

The method is as follows: the roller line transfer machine and the continuous hoisting machine can be arranged to each corresponding cell, so that the containers can be automatically moved in and out for replacement.

The specific container replacement mode can be adaptively selected according to the actual environment of the sorting equipment.

Fig. 13 schematically illustrates a flow chart of a sorting method of a sorting apparatus provided according to an embodiment of the present disclosure.

As shown in fig. 13, the method may include, for example, operations S101-S103.

And S101, starting the linear motor to drive the belt trolley to circularly move on the track.

S102, placing the packages to be sorted on a belt trolley.

S103, acquiring the number of the occupied belts of the packages on the belt trolley, controlling the rollers corresponding to the occupied belts to coaxially and synchronously rotate, and loading the packages into a container through the grid slide ways corresponding to the belt trolley.

This operation is to determine whether the parcel is a small parcel or a medium-sized parcel at the time of sorting, and it can be determined by, for example, infrared scanning of the positions of both ends of the goods. As described above, for example, as shown in fig. 2, since the small packages S have a small size, one belt 21 is occupied, and the small packages S are sorted to the corresponding bin by controlling the rotation of the drum 22 corresponding to the occupied one belt 21. When the medium-sized packages M are sorted, the medium-sized packages M are placed on the belt trolley 2, the medium-sized packages M need to occupy three belts 21 due to the large size of the medium-sized packages M, and at the moment, the rollers 22 corresponding to the three belts 21 are controlled to coaxially and synchronously rotate, so that the medium-sized packages M can be sorted to corresponding containers.

Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.

The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.

Claims

1. A sorting device comprising:

the device comprises a track (1), wherein a plurality of belt trolleys (2) capable of moving along the track (1) are arranged on the track (1);

the belt trolley (2) comprises at least two mutually independent belts (21) arranged in parallel and a roller (22) corresponding to each belt (21), the belts (21) are wound on the corresponding rollers (22), the rollers (22) are used for driving the belts (21) to move, and the moving direction of the belts (21) is vertical to that of the belt trolley (2);

wherein, at least two rollers (22) on the same side of the belt trolley (2) can respectively rotate independently or synchronously rotate.

2. Sorting equipment according to claim 1, wherein the track (1) comprises at least two layers of straight sections and at least two sections of circular arc sections, the at least two sections of circular arc sections connect the at least two layers of straight sections to form a three-dimensional closed loop, and the moving directions of the belt trolleys (2) on the two adjacent layers of straight sections are opposite.

3. The sorting equipment according to claim 1, further comprising a limiting wheel chain set (3), wherein the limiting wheel chain set (3) is arranged along the extending direction of the track (1), the limiting wheel chain set (3) is connected with the track (1) and the belt trolley (2), the limiting wheel chain set (3) comprises a first limiting wheel (31) and a second limiting wheel (32), the central axes of the first limiting wheel (31) and the second limiting wheel (32) are perpendicular to each other, and the first limiting wheel (31) and the second limiting wheel (32) are arranged in a staggered manner along the extending direction of the track (1).

4. Sorting equipment according to claim 3, wherein a supporting wheel (23) and a guide wheel (24) are further arranged on one side of the belt trolley (2) departing from the belt (21), the supporting wheel (23) acts on the track (1) to support the belt trolley (2), and the guide wheel (24) is rotatably connected with the first limiting wheel (31) to support and guide the belt trolley (2).

5. Sorting apparatus according to claim 2, the track (1) comprising two rails which are arranged offset in the direction in which the straight sections of the track (1) extend.

6. Sorting equipment according to claim 1, wherein an electric slip ring (25) and a magnetic pole plate (26) are further arranged on the belt trolley (2), a linear motor (4), a trolley line (5) and a trolley line collector (6) are further arranged on the track (1), the electric slip ring (25) is connected with the trolley line collector (6) and is in contact with the trolley line (5), and the belt trolley (2) is driven by the linear motor (4) through the magnetic pole plate (26).

7. Sorting apparatus according to claim 1, wherein at least one side of the belt trolley (2) in the direction of movement of the belt (21) is provided with a gridline (7), the outlet end of the gridline (7) being provided with a container (8).

8. Sorting apparatus according to claim 1, wherein a guide structure is further provided on the belt (21).

9. Sorting apparatus according to claim 1, wherein the rollers (22) of the belt trolley (2) on one side are motorized rollers and the rollers (22) on the other side are driven rollers, in the direction of movement of the belt (21).

10. Sorting apparatus according to claim 4, wherein the belt trolley (2) is provided with the support wheel (23) and the guide wheel (24) simultaneously on each side in the direction of movement of the belt (21).

11. A sorting method based on the sorting apparatus of any one of claims 1-10, comprising:

acquiring the number of the belts (2) covered on the belt trolley (2);

controlling the rollers (22) corresponding to the occupied belts (2) to synchronously rotate, and loading the packages into the cargo box (8) through the grid slideways (7) corresponding to the belt trolleys (2).