CN110980131A

CN110980131A - Logistics sorting trolley with adjustable sorting height, sorting system and sorting method of logistics sorting trolley

Info

Publication number: CN110980131A
Application number: CN201911273708.3A
Authority: CN
Inventors: 蔡熙; 陈丽荣
Original assignee: Suzhou Gp Logistics System Co ltd
Current assignee: Suzhou Gp Logistics System Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-04-10

Abstract

The invention discloses a logistics sorting trolley with adjustable sorting height, a sorting system and a sorting method of the logistics sorting trolley. This scheme design is exquisite, and through the movable nut rigidity that makes the lead screw, the mode drive conveyer that the screw rod goes up and down can realize the conveyer on the parcel in the not letter sorting needs of co-altitude, has created the advantage for the letter sorting of multilayer check mouth to adopt this kind of drive mode, simple structure, and can effectually reduce occupation space, simultaneously, its lifting height can carry out reasonable adjustment according to the application scenario of difference.

Description

Logistics sorting trolley with adjustable sorting height, sorting system and sorting method of logistics sorting trolley

Technical Field

The invention relates to the field of logistics sorting, in particular to a logistics sorting trolley with adjustable sorting height, a sorting system and a sorting method of the logistics sorting trolley.

Background

The cross belt sorting system is assembled by a main driving belt conveyor and a trolley (trolley for short) carrying a small belt conveyor, and when the trolley moves to a specified sorting position, a belt is rotated to complete the task of sorting and delivering commodities. A cross belt is referred to because the main drive belt conveyor is crossed with the belt conveyor on the "car".

The traditional cross belt is a tiled single-layer structure, each trolley is driven to move through a chain type driving structure, and conventional sorting trolleys, such as the cross belt type logistics sorting trolley disclosed by the application number 201810494383.0, are fixed and cannot be lifted, so that the conventional sorting trolleys are required to be matched with single-layer sorting grids for use, the sorting requirements of thin parts and multiple customers such as medicines, clothes, tobaccos and banks cannot be met, and the use requirements of multiple layers of grids or multiple layers of shelves cannot be met.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a method.

The purpose of the invention is realized by the following technical scheme:

the logistics sorting trolley with the adjustable sorting height comprises a chassis, wherein at least one lead screw extending longitudinally is arranged on the chassis, a movable nut of the lead screw can be fixed on the chassis in a self-rotating mode and is connected with a motor driving the lead screw to rotate, a screw of the lead screw can be connected with a conveyor in a self-rotating mode, and the conveyor is arranged on a limiting mechanism.

Preferably, in the logistics sorting trolley with the adjustable sorting height, a plurality of lead screws are arranged and are connected with the same motor through a transmission mechanism.

Preferably, in the logistics sorting trolley with the adjustable sorting height, the length of the screw rod is 0.5-10 m.

Preferably, in the logistics sorting trolley with the adjustable sorting height, the limiting mechanism comprises at least three telescopic rods which are vertically arranged on the chassis and the upper ends of which are connected with the conveyor.

Preferably, in the logistics sorting trolley with the adjustable sorting height, the limiting mechanism comprises guide frames positioned on two sides of the conveyor, and the conveyor is in rolling connection or sliding connection with the guide frames.

Preferably, in the logistics sorting trolley with the adjustable sorting height, a support nut in threaded connection with the screw is hung at the bottom of the chassis.

Sorting height-adjustable's commodity circulation letter sorting system, including a set of articulated above-mentioned arbitrary sorting height-adjustable's commodity circulation letter sorting dolly in proper order, sorting height-adjustable's commodity circulation letter sorting dolly movably sets up on console mode or top suspension formula track and is followed the track removal by the drive arrangement drive.

Preferably, in the logistics sorting system with adjustable sorting height,

the track is of a top-hung type, and the upper end of the screw rod extends to the upper part of the track;

or the rail is floor type, the lower end of a screw rod of the logistics sorting trolley with the adjustable sorting height extends to the lower part of the rail, and a groove which is used for the screw rod to move and is coaxial with the rail and has the same shape with the rail is formed in the ground.

Preferably, the logistics sorting system with the adjustable sorting height further comprises sorting grids and an upper envelope line which are positioned on the side edge of the track, and each sorting grid is provided with a plurality of layers of grids.

Preferably, in the logistic sorting system with adjustable sorting height, each layer of the grid is a chute, and the length of the chute of each sorting grid gradually increases from bottom to top.

Preferably, in the logistics sorting system with adjustable sorting height, the upper envelope lines are arranged side by side, and the length L of the track between the upper envelope lines on two sides and the sorting grid closest to the upper envelope lines meets the following formula:

h is the maximum moving stroke of the conveyor, and V1 is the maximum lifting speed of the conveyor; v2 is the moving speed of the material flow sorting trolley along the track.

The sorting method of the logistics sorting system with the adjustable sorting height comprises the following steps:

s1, conveying the packages to an upper package line, and conveying the packages to a reserved logistics sorting trolley after the packages at least acquire a path on the upper package line:

s2, starting a motor of the logistics sorting trolley, and driving a screw to ascend and descend according to the confirmed position and height of the target grid to adjust the conveying surface of the conveyor to the corresponding height;

s3, moving the logistics sorting trolley to the position of the target grid along the loop, and starting the conveyor to convey the packages to the target grid;

s4, the logistics sorting trolley moves continuously along with the loop line and the motor starts the driving screw rod to lift, so that the conveying surface of the logistics sorting trolley behind the lower part is adjusted to the height connected with the upper wrapping line before moving to the upper wrapping point.

The technical scheme of the invention has the advantages that:

this scheme design is exquisite, and through the movable nut rigidity that makes the lead screw, the mode drive conveyer that the screw rod goes up and down can realize the conveyer on the parcel in the not letter sorting needs of co-altitude, has created the advantage for the letter sorting of multilayer check mouth to adopt this kind of drive mode, simple structure, and can effectually reduce occupation space, simultaneously, its lifting height can carry out reasonable adjustment according to the application scenario of difference.

The letter sorting dolly of this scheme has made things convenient for and has docked with the transfer chain of difference in height, can realize not moving between the transfer chain of co-altitude and carry, can be applied to fields such as storage, the effectual flexibility that improves the application, and the suitability is wider, can utilize widely.

The letter sorting dolly of this scheme leads and spacing with leading truck or telescopic link, and the heavy burden of leading truck and telescopic link is little, and stability when can effectively guarantee the conveyer and go up and down is led and spacing with the telescopic link in addition, can occupy littleer space, and can not produce the upper and lower package operation of dolly and interfere, and practical function is better, and overall structure retrencies more.

The letter sorting dolly of this scheme increases support bolt, can effectually provide the support to the screw rod, avoids its bending, influences the stationarity and the smooth and easy nature of conveyer lift.

The letter sorting system of this scheme can effectual realization multilayer check mouth's letter sorting needs, and when adopting the console mode, can slot on ground to accomodate the screw rod of lead screw, thereby can make full use of underground space increase the length of screw rod, realize the lift operation of big stroke.

The letter sorting bin of this scheme can design as required, can multiple application occasions such as effectual adaptation storage and commodity circulation, when adopting chute formula letter sorting bin to the length of design chute can be effectual and holding tank cooperation use, saving area that simultaneously can be abundant.

Drawings

FIG. 1 is a front view of a first embodiment of a sorting cart of the present invention;

FIG. 2 is a front view of a second embodiment of the sorting cart of the present invention;

FIG. 3 is a top plan view of a second embodiment of the sorting cart of the present invention;

FIG. 4 is a schematic view of a third embodiment of the sorting cart of the present invention (with the motor, lead screw, etc. structure hidden);

FIG. 5 is a schematic view of the logistics sorting system of the present invention;

FIG. 6 is a schematic view of the coupling of the sorting cart of the present invention (only the configuration of the chassis area is shown);

FIG. 7 is a front view of the logistics sorting system of the present invention (sorting grid and upper envelope are hidden and only the structure of the upper section of the track is shown, the structure of the lower section of the track is not shown);

fig. 8 is a schematic view of a first embodiment of a driving device in the logistics sorting system of the invention;

fig. 9 is a schematic view of a second embodiment of a driving device in the logistics sorting system of the invention;

fig. 10 is a front view of the logistic sorting system of the present invention with the upper envelope hidden.

Detailed Description

Objects, advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments. The embodiments are merely exemplary for applying the technical solutions of the present invention, and any technical solution formed by replacing or converting the equivalent thereof falls within the scope of the present invention claimed.

In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.

The logistics sorting trolley with adjustable sorting height disclosed by the invention is explained below with reference to the accompanying drawings, as shown in fig. 1, the logistics sorting trolley comprises a chassis 111, at least one lead screw 112 extending along the longitudinal direction is arranged on the chassis 111, a movable nut 1121 of the lead screw 112 is fixed on the chassis 111 in a rotatable manner and is connected with a motor 113 driving the lead screw to rotate, a screw 1122 of the lead screw 112 is connected with a conveyor 114 in a rotatable manner, and the conveyor 114 is arranged on a limiting mechanism.

Specifically, the chassis 111 may be a frame structure or a plate structure with sufficient bearing capacity, and the specific shape and structure thereof may be designed and adjusted according to actual needs, and is not limited herein.

As shown in fig. 1, the movable nut 1121 of the lead screw 112 is fixed on the chassis 111 through a bearing 118, and the movable nut 1121 is inserted into an inner ring of the bearing 118, and an outer ring of the bearing 118 is fixed on the chassis 111.

As shown in fig. 1, the top end of the screw 1122 of the lead screw 112 is fixed to the bottom of the conveyor 114 through a bearing 119, so that when the motor 113 drives the movable nut 1121 to rotate, the screw 1122 can move up and down relative to the movable nut 1121 to drive the conveyor 114 to move up and down.

In addition, in order to ensure the driving stability and provide enough support, the number of the lead screws 112 is multiple, and the movable nut of each lead screw 112 can be driven by one motor 113; of course, a plurality of movable nuts may also share one motor 113, as shown in fig. 1, that is, a plurality of movable nuts are connected to the same motor 113 through a transmission mechanism 1110, and the transmission mechanism 1110 may be a structure formed by a sprocket and a chain or a structure formed by a pulley and a belt.

In order to accommodate different sorting heights, the length of the screw 1122 can be designed as desired, and is preferably between 0.5 and 10 m.

The conveyor 114 may be a belt conveyor, a roller conveyor, a deflecting wheel conveyor, etc., and the specific structure thereof is known in the art and will not be described herein.

The limiting mechanism is used for ensuring the stability of the conveyor 114 during the lifting process, and may be implemented in various ways, and in one embodiment, as shown in fig. 2 and fig. 3, the limiting mechanism includes guide frames 116 located at both sides of the conveyor 114, and the conveyor 114 is connected with the guide frames 116 in a rolling or sliding manner.

As shown in fig. 2 and fig. 3, the guiding frame 116 on each side may be two square pipes 1161 arranged at a gap and a reinforcing pipe or plate 1162 located at the top, and the two sides of the conveyor 114 are respectively provided with a limiting roller 1141 attached to two vertical side walls of each square pipe 1161, so that the position of the conveyor 114 is defined by the limiting roller 1141 cooperating with the guiding frame 116. Moreover, the height of the guide frame 116 can be adaptively designed according to the required use environment, and generally the height of 1-8m is satisfied.

Certainly, when the guide frame 116 is adopted, the guide frame 116 needs to be arranged on the chassis 111 and occupies a certain space, if the lifting height is higher, the height of the guide frame 116 is correspondingly increased and occupies a larger space, and the logistics sorting trolley moves along the guide frame 116, so that a certain outward acting force needs to be generated on the guide frame 116 when the logistics sorting trolley moves, and therefore, when the logistics sorting trolley moves to a high position, the logistics sorting trolley may shake, and at this time, the stability of the guide frame 116 must be ensured through a certain structure; meanwhile, no matter whether the logistics sorting trolley is lifted or not, the height of the guide frame 116 cannot be changed, and the whole loop needs to be correspondingly avoided.

Therefore, in another alternative embodiment, as shown in fig. 1, the guide frame 116 may be replaced by a telescopic rod 115, the telescopic rod 115 is vertically fixed on the chassis 111, the top of the telescopic rod 115 is fixed at the bottom of the conveyor 114, in this structure, since the telescopic rod 115 is located at the bottom of the conveyor 114, it does not occupy the space on both sides of the conveyor 114, and therefore it does not interfere with the bag loading and unloading operation of the conveyor 114, and meanwhile, the telescopic rod 115 has a small structure in a normal state, and occupies a small space, so that it can simplify the structure.

The number of the telescopic rods 115 is at least 3, and the axes of the telescopic rods are not in one plane, so that the support and the limit can be effectively provided. In addition, as shown in fig. 1, when the telescopic bar 115 is installed on the base plate 111, it may extend below the base plate 111, thereby further reducing the space occupied in its shortest state so that the lowest position of the conveyor may be as low as possible.

In another embodiment, as shown in fig. 4, the limiting mechanism may include at least one layer of supporting rods 1120 hinged in an X shape, for example, when the supporting rods 1120 are one layer, the lower ends of the supporting rods 1120 are respectively pivotally connected to a sliding block 1130, the sliding block 1130 is slidably connected to a guide rail 1140 on the chassis 111, the upper ends of the two supporting rods 1120 are respectively pivotally connected to a sliding block 1150, and the sliding block 1150 is slidably disposed on the guide rail 1160 at the bottom of the conveyor.

Further, since the length of the screw 1122 is long if the height to be adjusted is high during actual use, if only the movable nut 1121 supports and limits the screw 1122, bending deformation and the like may occur, as shown in fig. 1, and thus the support nut 117 screwed with the screw 1122 is hung from the bottom of the chassis 111, so that the support nut 117 can limit the screw 1122 during actual use, thereby preventing the screw 1122 from bending and ensuring support performance.

The scheme further discloses a logistics sorting system with adjustable sorting height, which is shown in fig. 5 and comprises a group of logistics sorting trolleys 11 with adjustable sorting height of the above embodiment, which are sequentially hinged, and specifically, as shown in fig. 6, the chassis 111 adjacent to the logistics sorting trolley 11 with adjustable sorting height is connected through a rod end joint bearing 16. The logistics sorting trolley 11 with the adjustable sorting height is movably arranged on the track 12 and is driven by the driving device 13 to move along the track 12.

As shown in fig. 5 and fig. 6, the track 12 may be a circular, oval, kidney-shaped or other irregular closed circular track, and the shape of the track 12 may be adaptively designed as required, preferably, the track 12 includes two spacing grooves 121 for a wheel to roll and to limit and a side baffle 122 located below each spacing groove 121, and the chassis 111 of each logistic sorting cart 11 is provided with a roller 1111 located in the spacing groove 121 and a spacing wheel 1112 attached to the side baffle 122.

In one embodiment, the track 12 may be floor-type, that is, it is disposed on the ground 14, and if the height of the track 12 is low, the logistics sorting trolley 11 with adjustable sorting height is erected on the track 12, that is, the conveying surface of the logistics sorting trolley 11 with adjustable sorting height is located above the track 12; if the height of the rail 12 is high, the logistics sorting trolley 11 with adjustable sorting height can be hung on the rail 12, that is, the conveying surface of the logistics sorting trolley 11 with adjustable sorting height is lower than the rail.

In another embodiment, the track 12 may be a top-hung type, i.e. it is hung on a roof (not shown) or other high-altitude foundation, in which case, preferably, the logistics sorting trolley 11 is hung on the track 12 in a manner suitable for a space with a relatively large height of a house.

Further, since the screw 1122 needs to occupy a certain installation height, in order to meet the requirement of large-stroke lifting, when the rail 12 is of a top-hung type, the upper end of the screw 1122 extends above the rail 12, and the lower end of the screw 1122 can be moved to a movable nut position, so that the space occupied by the screw 1122 can be effectively reduced by using a high-altitude space, and the adjustable maximum height of the conveyor 114 can be maximized.

When the rail 12 is a floor type, as shown in fig. 10, the lower end of the screw 1122 extends to below the rail 12, and a groove 15, which is coaxial with the rail and has the same shape as the rail, is formed in the ground 14, so that when the logistics sorting trolley 11 with the adjustable sorting height is disposed on the rail 12, the lower end of the screw can extend into the groove 15 on the ground, and the depth of the groove 15 is such that the upper end of the screw 1122 can be close to the movable nut, so as to be in a state as low as possible, so that the logistics sorting trolley 11 with the adjustable sorting height is kept at a lowest position.

Meanwhile, as shown in fig. 10, the lower end of the screw rod 1122 is further rotatably provided with a roller 17 capable of rolling along the inner wall of the groove 15, so that the roller 17 can provide a certain limiting effect.

The logistics sorting trolley 11 with adjustable sorting height can be connected with the rail 12 in a rolling manner or in a sliding manner, preferably, as shown in fig. 6, two sides of each chassis 111 corresponding to the input and output ends of the conveyor 114 are provided with a roller 1111 corresponding to a limiting groove on the rail and a limiting wheel 1112 attached to a side plate on the rail, so that the chassis 111 moves along the rail 12 to drive the structure thereon to move.

The driving device 13 may be a chain driving structure of a conventional cross belt sorting device, or may be another feasible structure, in a preferred embodiment, as shown in fig. 8, the driving device 13 includes at least one U-shaped slot linear motor 131 with a fixed position and a sensing plate 132 fixed on part or all of the logistics sorting trolleys 11 with adjustable sorting height and corresponding to the U-shaped slot position of the U-shaped slot linear motor 131, the sensing plate 132 is driven by the U-shaped slot linear motor 131 to move, so that the logistics sorting trolleys 11 with adjustable sorting height can be driven to move, and the logistics sorting trolleys are hinged to each other, so that the logistics sorting trolleys can move integrally, and the number and the installation position of the U-shaped slot linear motors 131 can be adjusted reasonably, so that the whole trolley loop line can reach a set operation speed.

In another possible embodiment, as shown in fig. 9, the driving device 13 includes a friction wheel 134 driven by a fixed friction motor 133 to rotate and a friction plate 135 fixed on part or all of the logistics sorting cart 11 with adjustable sorting height and capable of clinging to the surface of the friction wheel 134, and the number of the friction wheels 134 may be two and maintain a gap, and they may be respectively driven by one friction motor or may be driven by the same friction motor through a certain transmission structure, where the corresponding structure is the prior art and will not be described again. The friction plate 135 is located between the two friction wheels 134, and when the two friction wheels 134 rotate, the friction plate 135 is driven to move, so that the logistics sorting trolley 11 with adjustable sorting height is driven to move.

In addition, as shown in fig. 5, the logistics sorting system with adjustable sorting height further comprises sorting grids 2 and an upper envelope 3, wherein the sorting grids 2 are located on the side of the track, and each sorting grid 2 is provided with a plurality of layers of grids 21.

As shown in fig. 10, the bottom plate 211 of each layer of the sorting compartment 21 of the sorting compartment 2 is a flat plate or a downward sloping plate, and when the bottom plate 211 is a flat plate, the structure is similar to a shelf of various warehouses; when the bottom plate 211 is a sloping plate, the package can slide down to the bottom along the bottom plate 211 after entering the cell. Meanwhile, the rear end of each layer of grid 21 can be open, that is, each layer of grid 21 is a long groove, and when the rear end of the sorting grid is open, the tail part of the sorting grid can be matched and connected with other conveying lines or accommodating grooves 4; when the sorting grid is matched and connected with the accommodating groove, the lengths of the grids 21 of each layer of each sorting grid 2 are different, and the lengths of the grids 21 are sequentially increased from bottom to top, so that a space can be effectively created for accommodating the accommodating groove 4. Of course, the rear end of each layer of the compartment 21 may also be an openable door, and when a certain amount of packages are stored in the compartment 21, the door can be opened to perform a pickup operation.

Moreover, since the height of each cell 21 does not need to be high because the cell is suitable for accommodating thin materials, the distance between adjacent bottom plates 211 is preferably 1 to 30cm, more preferably 5 to 20cm, and still more preferably 10 to 15 cm.

Of course, the sorting grid 2 can be a plurality of separate parts or an integral body with a plurality of rows and columns of grids 21.

The upper envelope curve 3 can be any known upper envelope device with functions of conveying, weighing, scanning and measuring shape, which is a known technology and is not described in detail herein.

Go up envelope curve 3 when sweeping the sign indicating number, adopt the top surface to sweep the sign indicating number and the mode that the sign indicating number was swept to the bottom surface, it is specific, go up envelope curve 3 and include at least buffering transfer chain (not shown in the figure) and DWS transfer chain (not shown in the figure), keep the clearance between buffering transfer chain and the DWS transfer chain, the size in clearance slightly is greater than the length of the longest diagonal of bar code or the two-dimensional code on the parcel. And a code scanning device (not shown in the figure) with an upward lens is arranged below the gap, so that code scanning at the bottom can be realized, and meanwhile, a code scanning device at the top is arranged at the DWS conveying line. The mode of sign indicating number is swept to the adoption two-sided, and the degree of difficulty that manual work was wrapped is reduced to the letter sorting characteristic that can effectual convenient thin piece, need not to ensure that bar code, two-dimensional code etc. on the parcel up, the effectual operating efficiency that has improved.

Further, in order to guarantee the stability of article in the transport between buffering transfer chain and the DWS transfer chain, be provided with the backup pad of transparent material in their clearance department, for example can adopt materials such as toughened glass or transparent plastics to avoid the parcel to produce the collision with the input of DWS transfer chain.

The weighing conveying line of the upper covering line 3 comprises two jointed dynamic weighing conveying lines, wherein the length of the dynamic weighing conveying line positioned at the front end (the position where an article firstly passes before and the position where the article secondly passes after during conveying) is larger than that of the rear end, the length of the dynamic weighing conveying line positioned at the front end is preferably within 1m +/-0.1 m, and the length of the dynamic weighing conveying line positioned at the rear end is within 0.8 +/-0.1 m; the large piece is weighed by two dynamic weighing conveying lines simultaneously, and the method and the process for obtaining one weight data by integrating the data of the double weighing are the prior art and are not described in detail.

And the upper envelope wires 3 are arranged side by side, they can be distributed on both sides of the track 11, and meanwhile, the length L of the track between the upper envelope wires 3 on both sides and the sorting grid closest to the upper envelope wires 3 satisfies the following formula:

h is the maximum moving stroke of the conveyor, and V1 is the maximum lifting speed of the conveyor; v2 is the moving speed of the material flow sorting trolley along the track. Therefore, in operation, the logistics sorting trolley has enough space to convey the logistics sorting trolley to a preset height and can effectively return to the upper bag height to realize the upper bag after the logistics sorting trolley is discharged.

When the whole device works, the start-stop and working state of each electrical element can be controlled by various control devices (such as a PLC and an upper computer or an industrial control computer) and various sensors (such as a photoelectric sensor, a proximity sensor, a distance sensor and the like).

When the logistics sorting system with the adjustable sorting height works, the logistics sorting system comprises the following steps:

and S1, placing the packages on an upper package line by manual or automatic equipment, conveying the packages along with the upper package line, acquiring the paths (package positions) of the packages when the packages pass through a code scanning device, dynamically weighing the packages to obtain weight, and conveying the packages to the logistics sorting trolley 11 with adjustable sorting height according to set parameters by the upper package line after the packages pass through a shape measuring device to obtain shape data and the logistics sorting trolley 11 with the reserved sorting height, wherein the prior art is adopted here, and the details are omitted.

S2, after the previous step obtains the parcel path, the control device determines the position and height of the corresponding cell at the position of the lower parcel, and then the control device controls the motor 113 to start the driving screw 1122 to ascend and descend to adjust the conveyor to the height corresponding to the target cell; meanwhile, the logistics sorting trolley 11 with the sorting height adjustable moves along with the whole trolley loop line.

And S3, when the logistics sorting trolley 11 with the adjustable sorting height moves to the position of the target grid along the loop, the conveyor 114 starts to convey the packages to the target grid.

S4, after the package is released, the logistics sorting trolley 11 with adjustable sorting height moves continuously along with the trolley loop line and the motor 113 starts the driving screw 1122 to ascend and descend so that the conveying surface of the logistics sorting trolley 11 with adjustable sorting height is adjusted to the height connected with the upper package line before moving to the upper package point.

The invention has various embodiments, and all technical solutions formed by adopting equivalent transformation or equivalent transformation are within the protection scope of the invention.

Claims

1. Sorting height-adjustable's commodity circulation letter sorting dolly, its characterized in that: the automatic feeding device comprises a chassis (111), wherein at least one lead screw (112) extending along the longitudinal direction is arranged on the chassis (111), a movable nut (1121) of the lead screw (112) is fixed on the chassis (111) in a rotatable mode and is connected with a motor (113) driving the lead screw to rotate, a screw (1122) of the lead screw (112) is connected with a conveyor (114) in a rotatable mode, and the conveyor (114) is arranged on a limiting mechanism.

2. The logistics sorting trolley with adjustable sorting height of claim 1, wherein: the screw rods (112) are multiple and are connected with the same motor (113) through a transmission mechanism.

3. The logistics sorting trolley with adjustable sorting height of claim 1, wherein: the length of the screw (1122) is between 0.5 and 10 m.

4. The logistics sorting trolley with adjustable sorting height of claim 1, wherein: the limiting mechanism comprises at least three telescopic rods (115) which are vertically arranged on the chassis (111) and the upper ends of which are connected with the conveyor (114).

5. The logistics sorting trolley with adjustable sorting height of claim 1, wherein: the limiting mechanism comprises guide frames (116) located on two sides of the conveyor (114), and the conveyor (114) is connected with the guide frames (116) in a rolling or sliding mode.

6. The logistics sorting trolley with adjustable sorting height of claim 1, wherein: and a support nut (117) which is in threaded connection with the screw rod (1122) is hung at the bottom of the base plate (111).

7. Letter sorting height-adjustable's commodity circulation letter sorting system, its characterized in that: comprising a set of sorting height adjustable logistics sorting trolleys (11) of any one of claims 1 to 6, which are hinged in sequence, wherein the sorting height adjustable logistics sorting trolleys (11) are movably arranged on a floor type or top hanging type track (12) and are driven by a driving device (13) to move along the track (12).

8. The sorting height adjustable logistics sorting system of claim 7, wherein:

the track is of a top-hung type, and the upper end of the screw rod (1122) extends to the upper part of the track;

or the rail (12) is floor type, the lower end of a screw rod (1122) of the logistics sorting trolley (11) with the adjustable sorting height extends to the lower part of the rail, and a groove (15) which is used for enabling the screw rod (1122) to move, has the same shape with the rail and is coaxial is formed in the ground (14).

9. The sorting height adjustable logistics sorting system of claim 7, wherein: the sorting device also comprises sorting grids (2) positioned on the side edge of the track and an upper envelope curve (3), wherein each sorting grid (2) is provided with a plurality of layers of grids (21).

10. The sorting height adjustable logistics sorting system of claim 9, wherein: each layer of grid (21) is a chute, and the length of the chute of each sorting grid (2) is gradually increased from the bottom to the top.

11. The sorting height adjustable logistics sorting system of claim 9, wherein: go up the envelope for many and set up side by side, the length L of the orbit between the last envelope of both sides and the letter sorting bin that is closest to it satisfies following formula:

12. The sorting method of the logistics sorting system with the adjustable sorting height is characterized in that: the method comprises the following steps:

s2, starting a motor (113) of the logistics sorting trolley, and driving a screw (1122) to lift to adjust the conveying surface of the conveyor to a corresponding height according to the confirmed position and height of the target grid;

s3, the logistics sorting trolley moves to the position of the target grid opening along the loop, and the conveyor (114) is started to convey the packages to the target grid opening;

s4, the logistics sorting trolley moves continuously along with the loop line and the motor (113) starts the driving screw rod (1122) to lift so that the conveying surface of the logistics sorting trolley behind the lower part is adjusted to the height connected with the upper wrapping line before moving to the upper wrapping point.