CN212652194U - Sorting trolley tray resetting device, sorting trolley and sorting system - Google Patents

Abstract

The utility model relates to the technical field of article sorting, and discloses a sorting trolley tray resetting device, a sorting trolley and a sorting system, wherein the sorting trolley tray resetting device comprises a first resetting component and/or a second resetting component, and each tray is provided with one of the first resetting component and the second resetting component; the first resetting component can contact the lower surface of the tray so that the tray gradually rotates to a bearing state along with the movement of the first resetting component or the horizontal movement of the sorting trolley; the second reset component comprises a reset arm which is connected with the tray and fixed relative to the tray, and a reset drive which drives the reset arm to rotate so as to enable the tray to rotate to a bearing state. The utility model provides a two trays of to opening door type letter sorting dolly reset respectively alone to cancel linkage among the prior art and reset, simplified letter sorting dolly tray resetting means's structure, stability is good, and the initial power that resets of every tray is less, has reduced the probability that the tray resets and breaks down.

Description

Sorting trolley tray resetting device, sorting trolley and sorting system

Technical Field

The utility model relates to an article letter sorting technical field especially relates to a sorting dolly tray resetting means, sorting dolly and letter sorting system.

Background

The trays of sorting carts are typically of a split configuration, i.e. one sorting cart comprises two trays which are turned down to unload the articles thereon, and which need to be reset to a load-bearing state to receive the articles before the next loading of the articles. However, the two trays in the prior art are linked together to reset the trays, namely, one of the trays is driven by the driving structure to rotate and reset, and the other tray is driven by the tray to rotate and reset. However, the sorting trolley is complex in driving structure, large in initial reset force and prone to failure.

Therefore, it is desirable to provide a tray returning device for a sorting cart to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure's letter sorting dolly tray resetting means to reduce the tray and reset the size hard.

Another object of the utility model is to provide a letter sorting dolly and letter sorting system can simplify the structure of letter sorting dolly, reduces the fault rate of letter sorting dolly.

To achieve the purpose, the utility model adopts the following technical proposal:

a sorting trolley tray resetting device comprises a trolley frame body and two trays which are arranged in a side-by-side mode and rotatably connected to the trolley frame body, wherein the sorting trolley comprises a first resetting component and/or a second resetting component, and each tray is provided with one of the first resetting component and the second resetting component;

the first resetting component can contact the lower surface of the tray so that the tray gradually rotates to a bearing state along with the movement of the first resetting component or the horizontal movement of the sorting trolley;

the second reset component comprises a reset arm which is connected with the tray and fixed relative to the tray, and a reset drive which drives the reset arm to rotate so as to enable the tray to rotate to a bearing state.

As a preferable technical solution of the above sorting trolley tray resetting device, the resetting drive includes a downhill guide rail extending in the forward direction of the sorting trolley and capable of movably cooperating with the resetting arm, or a roller movably cooperating with the resetting arm.

As an optimal technical scheme of the tray resetting device for the sorting trolley, the first resetting component comprises an ascending guide rail which extends along the advancing direction of the sorting trolley and can be movably matched with the lower surface of the tray, or a roller which is movably matched with the lower surface of the tray.

As an optimal technical scheme of the above sorting trolley tray resetting device, the device further comprises:

the bearing deflector rod is rotatably connected to the frame body so that the bearing deflector rod is in a first state or a second state, when the bearing deflector rod is in the first state, the bearing deflector rod supports at least one tray so that the tray is in a bearing state, and when the bearing deflector rod is in the second state, the bearing deflector rod is separated from the tray so that the tray can rotate relative to the frame body under the action of gravity;

and the unlocking reset assembly is used for enabling the bearing deflector rod to be in a second state and enabling the bearing deflector rod to rotate relative to the frame body when the tray is restored to the bearing state so as to enable the bearing deflector rod to be in a first state.

As an optimized technical scheme of the above sorting trolley tray resetting device, the unlocking resetting component comprises:

the tray is rotatably connected to the frame body, one end of the latch hook can block the bearing deflector rod from rotating so that the bearing deflector rod is in a second state, and the tray can contact the other end of the latch hook to push the latch hook to rotate in the process of rotating to a bearing state so that the latch hook is separated from the bearing deflector rod;

and the elastic resetting piece can enable the bearing deflector rod separated from the lock hook to rotate relative to the frame body so as to restore to the first state.

As an optimal technical scheme of the sorting trolley tray resetting device, one end of the lock hook can be connected with the bearing deflector rod in a hooking mode.

As a preferable technical solution of the above sorting trolley tray resetting device, the latch hook is provided with a triggering portion, and the triggering portion is located above the tray and can abut against the tray.

The utility model also provides a sorting dolly, including foretell sorting dolly tray resetting means.

As a preferable technical solution of the sorting trolley, a bottom wall of one of the trays is provided with a supporting portion extending along the other tray to support the other tray in a loaded state.

The utility model also provides a sorting system, including foretell letter sorting dolly.

The utility model has the advantages that: the utility model provides a two trays of to opening door type letter sorting dolly reset respectively alone to cancel linkage among the prior art and reset, simplified letter sorting dolly tray resetting means's structure, stability is good, and it is swift convenient to reset, and the initial power that resets of every tray is less, has reduced the probability that letter sorting dolly tray resets and breaks down.

The utility model provides a letter sorting dolly and letter sorting system, simple structure has reduced the fault rate of letter sorting dolly, has improved letter sorting efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a first state diagram of the sorting trolley provided by the embodiment of the invention for resetting the tray;

fig. 2 is a second state diagram of the sorting trolley provided by the embodiment of the invention for resetting the tray;

FIG. 3 is a schematic view of the sorting cart with the tray in a loaded state according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

fig. 5 is a first process diagram for resetting the tray by the sorting trolley provided by the embodiment of the invention;

FIG. 6 is a side view of FIG. 5;

fig. 7 is a second diagram of the process of resetting the tray by the sorting trolley provided by the embodiment of the utility model;

FIG. 8 is a side view of FIG. 7;

fig. 9 is a third process diagram for resetting the tray by the sorting trolley provided by the embodiment of the invention;

FIG. 10 is a side view of FIG. 9;

fig. 11 is a fourth process diagram for resetting the tray by the sorting trolley provided by the embodiment of the invention;

FIG. 12 is a side view of FIG. 11;

fig. 13 is a fifth process diagram of the sorting trolley provided by the embodiment of the utility model for resetting the tray;

fig. 14 is a side view of fig. 13.

In the figure:

1. a frame body;

21. a front tray; 22. a rear tray; 23. a support portion; 24. flanging;

31. a reset arm;

32. reset driving; 321. a downhill guide rail; 322. a horizontal guide rail; 323. a climbing guide rail;

33. resetting the guide rail; 331. an uphill guide rail; 332. a descending guide rail;

34. supporting a deflector rod; 341. a hooking groove;

35. a latch hook; 351. a hook portion; 352. a trigger part.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

Example one

As shown in fig. 1 to 4, the present embodiment provides a sorting trolley tray resetting device, a sorting trolley and a sorting system, wherein the sorting system includes a plurality of sorting trolleys and a sorting track, and the plurality of sorting trolleys are connected end to end and can travel on the sorting track. Every letter sorting dolly is including being equipped with the frame body 1 of uninstallation mouth to and be two trays of side by side door formula setting, and two trays all rotate to be connected in frame body 1 in order to open or close the uninstallation mouth. When the two trays are in a bearing state, the article can be supported; when the two loaded trays rotate a certain angle relative to the frame body 1, the unloading opening can be opened, so that the articles supported by the trays fall from the current unloading opening.

The utility model provides a letter sorting dolly tray resetting means for after the article uninstallation, reset the tray in order to rotate to bearing the weight of the state, so that continue to accept the heavy object. The two trays of each sorting trolley in this embodiment are distributed along the horizontal direction of the advancing direction of the sorting trolley, and the tray located at the upstream is denoted as a front tray 21, and the tray located at the downstream is denoted as a rear tray 22. The sorting cart tray repositioning device will be described in detail below with the above-described sorting cart continuing to travel on the sorting track while unloading articles, as an example.

The sorting trolley tray resetting device comprises a first resetting component for resetting the front tray 21 and a second resetting component for resetting the rear tray 22. The first reset assembly can contact the lower surface of the tray so that the front tray 21 gradually rotates to a bearing state along with the movement of the first reset assembly or the horizontal movement of the sorting trolley.

In this embodiment, the frame body 1 is provided with a front main shaft, and the front tray 21 is rotatably sleeved outside the front main shaft. The first return assembly comprises an uphill guide 331 extending in the direction of advance of the sorting trolley and able to slidingly engage with the lower surface of the front tray 21, i.e. the uphill guide 331 has a position with a tendency to rise in height in the direction of advance of the sorting trolley. Specifically, the ascending guide rails 331 are disposed below the sorting trolley, when the sorting trolley after unloading the articles travels on the sorting track to the position of the ascending guide rails 331, the ascending guide rails 331 will act on the lower surface of the front tray 21 to push the front tray 21 to rotate relative to the frame body 1, and as the sorting trolley travels on the sorting track, the descending guide rails 321 will continue to push the front tray 21 to rotate so as to rotate the front tray 21 to the loading state.

In other embodiments, a roller may be further disposed on the ascending rail 331, so that the lower surface of the front tray 21 is in rolling fit with the ascending rail 221, so as to reduce the friction between the ascending rail 331 and the front tray 21 when the front tray is reset. In other embodiments, the ascending guide rails 331 may not be provided, and the rollers are directly engaged with the lower surface of the front tray 21, so as to reposition the front tray 21 along with the forward movement of the sorting cart, preferably, the rollers are engaged with the lower surface of the front tray 21 in a rolling manner, so as to reduce the friction between the rollers and the lower surface of the front tray 21.

The second reset assembly includes a reset arm 31 connected to the rear tray 22 and fixed relative to the rear tray 22, and a reset driver 32 for driving the reset arm 31 to rotate so as to rotate the tray to the loading state. In this embodiment, be equipped with the back main shaft on the frame body 1, outside reset arm 31 and back tray 22 rotated the cover and located the back main shaft, reset arm 31 and back tray 22 structure as an organic whole can adopt modes such as welding, joint, paste, fastener connection or integrative moulding plastics or cast moulding will reset arm 31 and back tray 22 and form structure as an organic whole.

The reset drive 32 comprises a downhill guide 321 extending in the direction of advance of the sorting trolley and being able to slidingly engage the reset arm 31, i.e. the position of the downhill guide 321 has a tendency to decrease in height in the direction of advance of the sorting trolley. Specifically, the downhill guide rail 321 is disposed above the frame body 1, when the sorting trolley after unloading the articles travels on the sorting track to the position of the downhill guide rail 321, the downhill guide rail 321 will act on the reset arm 31 to push the reset arm 31 to drive the rear tray 22 to rotate relative to the frame body 1, and as the sorting trolley travels on the sorting track, the downhill guide rail 321 will continue to push the reset arm 31 to rotate, so that the rear tray 22 rotates to the loading state.

In other embodiments, rollers may be further disposed on the downhill guiding rail 321 to make the rear tray 22 and the downhill guiding rail 321 roll to cooperate, so as to reduce the friction between the downhill guiding rail 321 and the reset arm 31 when the downhill guiding rail 321 resets the rear tray 22. A roller may be further disposed on the reset arm 31 to make the roller roll-fit with the downhill guide 321, so as to reduce the friction between the downhill guide 321 and the reset arm 31 when the downhill guide 321 resets the rear tray 22. In other embodiments, the descending guide rail 321 may not be provided, and the roller is directly movably engaged with the reset arm 31, so as to reset the rear tray 22 along with the forward movement of the sorting trolley, and preferably, the roller is in rolling engagement with the reset arm 31, so as to reduce the friction between the roller and the reset arm 31.

Further, after the front tray 21 and the rear tray 22 are restored to the bearing state, along with the forward movement of the sorting trolley on the sorting track, the ascending guide rail 331 will gradually separate from the front tray 21, and the descending guide rail 321 will gradually separate from the rear tray 22, in order to ensure that after the front tray 21 is separated from the ascending guide rail 331 and the rear tray 22 is separated from the descending guide rail 321, the front tray 21 and the rear tray 22 can be continuously maintained in the bearing state, the sorting trolley tray resetting device provided by the embodiment further comprises a bearing shift lever 34 and an unlocking resetting component.

The support shift lever 34 is rotatably connected to the frame body 1 so that the support shift lever 34 is in the first state or the second state, and when the support shift lever 34 is in the first state, it supports at least one tray so that the tray is in the supporting state, and when the support shift lever 34 is in the second state, it is separated from the tray so that the tray can rotate relative to the frame body 1 under the action of gravity.

The unlocking reset assembly is used for enabling the bearing shift lever 34 to be in the second state and enabling the bearing shift lever 34 to rotate relative to the frame body 1 when the tray is restored to the bearing state so that the bearing shift lever 34 is in the first state. Specifically, the unlocking reset assembly comprises a locking hook 35 and an elastic reset piece, wherein the locking hook 35 is rotatably connected to the frame body 1, one end of the locking hook 35 can block the bearing shifting rod 34 from rotating so that the bearing shifting rod 34 is in the second state, and the tray can contact the other end of the locking hook 35 to push the locking hook 35 to rotate in the process of rotating to the bearing state so that the locking hook 35 is separated from the bearing shifting rod 34; the elastic return element enables the carrier lever 34, separated from the locking hook 35, to rotate with respect to the frame body 1 to return to the first condition.

In this embodiment, the supporting lever 34 is rotatably disposed on the lower bottom wall of the frame body 1, and the latch hook 35 is rotatably disposed on the side of the frame body 1 facing the tray and above the front tray 21 and the rear tray 22. The elastic reset element is a torsion spring, and in other embodiments, the elastic reset element may be a tension spring, one end of the tension spring is connected to one end of the support shift lever 34, and the other end of the tension spring is connected to the frame body 1, so that when the latch hook 35 is separated from the support shift lever 34, the tension spring will pull the support shift lever 34 to rotate relative to the frame body 1, so that the support shift lever 34 rotates to the first state.

Flanges 24 are arranged at two ends of the front tray 21 and the rear tray 22 in the advancing direction of the sorting trolley, so that heavy objects supported by the front tray 21 or the rear tray 22 are prevented from sliding off the trays. In the process that the front tray 21 and the rear tray 22 gradually rotate to the bearing state, as the sorting trolley moves forward along the sorting track, the flanging 24 on the front tray 21 or the rear tray 22 will contact the latch hook 35 at first to push the free end of the latch hook 35 to rotate upwards, so that the bearing shift lever 34 is separated from the latch hook 35, and the bearing shift lever 34 is restored to the first state under the action of the elastic restoring piece.

It should be noted that, when the locking hook 35 is separated from the support lever 34 by the height of the upper flange 24 of the front tray 21 or the rear tray 22 or the structure of the locking hook 35, the support lever 34 does not affect the return of the front tray 21 and the rear tray 22, so as to prevent the front tray 21 and the rear tray 22 from being unable to rotate to the supporting state after the support lever 34 returns to the first state. If the front tray 21 or the rear tray 22 has already or just rotated to a position higher than the support shift lever 34, the latch hook 35 may be separated from the support shift lever 34 when the front tray 21 or the rear tray 22 is rotated to a position higher than the support shift lever 34; after the latch hooks 35 and the support levers 34 are separated, the support levers 34 may abut against the sidewalls of the front tray 21 and the rear tray 22, and although there is a friction force between the support levers 34 and the front tray 21 and the rear tray 22, the rotation of the front tray 21 and the rear tray 22 is not affected.

The unloading process and the tray returning process of the tray returning device of the sorting cart will be briefly described with reference to fig. 5 to 14, in which the direction a indicated by the arrow in fig. 5 to 14 is the advancing direction of the sorting cart.

When the front tray 21 and the rear tray 22 carry articles, the front tray 21 and the rear tray 22 are both in a carrying state, and the bearing deflector rod 34 is in a first state under the action of the elastic reset piece to simultaneously support the front tray 21 and the rear tray 22, and at this time, the bearing deflector rod 34 is separated from the latch hook 35.

When the front tray 21 and the rear tray 22 unload the articles loaded thereon, the support lever 34 rotates to the second state, and the latch hook 35 blocks the support lever 34 from rotating. Without support from the support levers 34, the front tray 21 and the rear tray 22 will rotate under their own weight and the weight of the article with respect to the frame body 1 to open the unloading opening and allow the article to fall through the opening.

After the unloading of the articles is completed, as the sorting cart advances on the sorting track, the lower surface of the front tray 21 will contact the ascending guide rails 331 to rotate the front tray 21 relative to the front main shaft, and the reset arm 31 will contact the descending guide rails 321 to drive the rear tray 22 to rotate relative to the rear main shaft, so that the front tray 21 and the rear tray 22 gradually rotate to the loading state as the sorting cart advances. When the front tray 21 or the rear tray 22 is about to return to the supporting state, if the included angle between the front tray 21 or the rear tray 22 and the horizontal plane is 5 °, the locking hook 35 will contact the front tray 21 or the rear tray 22, so that the locking hook 35 rotates relative to the frame body 1 under the action of the front tray 21 or the rear tray 22, and the locking hook 35 is separated from the supporting shift lever 34, and the supporting shift lever 34 will rotate to the first state under the action of the elastic returning member, so as to support the front tray 21 and the rear tray 22 at the same time.

Two trays of door-to-door letter sorting dolly in this embodiment reset alone respectively, reset in order to cancel linkage among the prior art, and need not additionally to provide power, utilize the letter sorting dolly along the orbital walking of letter sorting, make downhill path guide rail 321 and the cooperation of arm 31 that resets, realize the resetting of back tray 22, and make uphill guide rail 331 and preceding tray 21 lower surface sliding fit, realize the resetting of preceding tray 21, the structure of letter sorting dolly tray resetting means has been simplified, it is swift convenient to reset, the initial power that resets of every tray is less, the probability that the letter sorting dolly tray resets and breaks down has been reduced.

Further, in order to improve the stability when the front tray 21 and the rear tray 22 support the article, the present embodiment provides a support portion 23 extending to the side where the rear tray 22 is located at the bottom wall of the front tray 21, so that the support portion 23 supports the rear tray 22 when both the front tray 21 and the rear tray 22 are in the loading state. In this case, the receiving lever 34 may be in contact with only the lower surface of the front tray 21, or may be in contact with both the lower surfaces of the front tray 21 and the rear tray 22. In the present embodiment, the front tray 21 is provided with, but not limited to, two support portions 23, and the number of the support portions 23 may be determined according to actual requirements. In other embodiments, the supporting deflector rods 34 corresponding to the trays one by one may be further provided, and the corresponding trays are supported by the supporting deflector rods 34.

After the support portion 23 is disposed on the front tray 21, the rear tray 22 needs to be restored to the loading state before the front tray 21, so as to avoid interference of the support portion 23 with the restoration of the rear tray 22.

In other embodiments, the supporting portion 23 may be disposed on the rear tray 22, and in this case, the front tray 21 is required to be restored to the loading state before the rear tray 22.

Furthermore, one end of the latch hook 35 can be hooked to the support lever 34. In this embodiment, one end of the latch hook 35 is provided with a hook portion 351, and one end of the support lever 34 is provided with a hook groove 341, and the hook portion 351 is hooked in the hook groove 341, so that the support lever 34 is in the second state.

Further, the latch hook 35 is provided with a trigger portion 352, and the trigger portion 352 is located above the front tray 11 and can abut against the flange 24 on the front tray 11. During the rotation of the front tray 21 to the loading state, the flange 24 of the front tray 21 will contact the trigger 352 to push the latch hook 35 to rotate, so that the latch hook 35 is disengaged from the retainer shifter 34.

Furthermore, the reset drive 32 further comprises a horizontal guide rail 322 connected to one end of the downhill guide rail 321, the downhill guide rail 321 and the horizontal guide rail 322 are sequentially arranged along the advancing direction of the sorting trolley, and the horizontal guide rail 322 is parallel to the horizontal plane. By providing the horizontal guide 322, the bearer lever 34 can be provided with a certain time for the second state to return to the first state.

Furthermore, the reset driver 32 further includes a climbing rail 323 connected to one end of the horizontal rail 322 not connected to the descending rail 321, the horizontal rail 322 and the climbing rail 323 are sequentially arranged along the advancing direction of the sorting trolley, and the height of the climbing rail 323 has an increasing trend along the advancing direction of the sorting trolley. By providing the climbing guide 323, the climbing guide 323 is gradually separated from the return arm 31 after the front tray 21 and the rear tray 22 are supported by the support lever 34.

Further, the first reset assembly further comprises a slope descending guide 332 connected to one end of the slope ascending guide 331, and the slope ascending guide 331 and the slope descending guide 332 are sequentially arranged along the advancing direction of the sorting trolley. In this embodiment, the ascending guide 331 and the descending guide 332 are integrally formed as a return guide 33. The height of the descending ramp guide 332 gradually decreases in the forward direction of the sorting trolley. Through setting up the downhill path guide 332, make bearing driving lever 34 support preceding tray 21 and back tray 22 after, downhill path guide 332 separates with the lower surface of preceding tray 21 and back tray 22 gradually, avoids the downhill path guide 332 to cause the interference to the advance of sorting dolly simultaneously.

Example two

The difference between the present embodiment and the first embodiment is: two trays distribute along the horizontal direction perpendicular to the sorting trolley advancing direction, and the two trays are provided with a first resetting component.

EXAMPLE III

The difference between the present embodiment and the first embodiment is: when the front tray 21 and the rear tray 22 are reset, the sorting trolley stops, and the reset guide rail 33 moves along the reverse direction of the advancing direction of the sorting trolley, so that the front tray 21 is restored to the bearing state; the downhill guide rails 321 move in the reverse direction of the sorting trolley's forward direction to restore the rear tray 22 to a loaded condition. In other embodiments, the front tray 21 can be restored to the loading state by lifting and lowering the reset guide 33.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (10)

1. A sorting trolley tray resetting device comprises a trolley frame body (1) and two trays which are arranged in a side-by-side mode and rotatably connected to the trolley frame body (1), and is characterized by comprising a first resetting component and/or a second resetting component, wherein each tray is provided with one of the first resetting component and the second resetting component;

the first resetting component can contact the lower surface of the tray so that the tray gradually rotates to a bearing state along with the movement of the first resetting component or the horizontal movement of the sorting trolley;

the second reset component comprises a reset arm (31) which is connected to the tray and fixed relative to the tray, and a reset drive (32) which drives the reset arm (31) to rotate so as to enable the tray to rotate to a bearing state.

2. Sorting trolley tray resetting device according to claim 1, characterized in that the resetting drive (32) comprises a downhill guide (321) extending in the direction of advance of the sorting trolley and being movably engaged with the resetting arm (31), or a roller being movably engaged with the resetting arm (31).

3. Sorting trolley tray resetting device according to claim 1, characterized in that the first resetting assembly comprises an uphill guide (331) extending in the direction of advance of the sorting trolley and being movably engaged with the lower surface of the tray, or a roller movably engaged with the lower surface of the tray.

4. The sorting cart tray repositioning apparatus of claim 1, further comprising:

the bearing deflector rod (34) is rotatably connected to the frame body (1) so that the bearing deflector rod (34) is in a first state or a second state, when the bearing deflector rod (34) is in the first state, the bearing deflector rod supports at least one tray so that the tray is in a bearing state, and when the bearing deflector rod (34) is in the second state, the bearing deflector rod is separated from the tray so that the tray can rotate relative to the frame body (1) under the action of gravity;

and the unlocking reset assembly is used for enabling the bearing deflector rod (34) to be in the second state and enabling the bearing deflector rod (34) to rotate relative to the frame body (1) when the tray is restored to the bearing state so as to enable the bearing deflector rod (34) to be in the first state.

5. The sorting cart tray return apparatus of claim 4, wherein the unlock return assembly comprises:

the locking hook (35) is rotatably connected to the frame body (1), one end of the locking hook (35) can block the bearing shifting rod (34) from rotating so that the bearing shifting rod (34) is in a second state, and the tray can contact the other end of the locking hook (35) to push the locking hook (35) to rotate in the process of rotating to a bearing state, so that the locking hook (35) is separated from the bearing shifting rod (34);

and the elastic reset piece can enable the bearing deflector rod (34) separated from the lock hook (35) to rotate relative to the frame body (1) so as to restore to the first state.

6. Sorting trolley pallet return device according to claim 5, characterized in that one end of the locking hook (35) can be hooked to the bearer lever (34).

7. Sorting trolley tray resetting device according to claim 5, characterized in that the locking hook (35) is provided with a triggering part (352), which triggering part (352) is located above the tray and can abut against the tray.

8. A sorting trolley comprising a sorting trolley tray repositioning device according to any one of claims 1 to 7.

9. Sorting trolley according to claim 8, characterized in that the bottom wall of one of the trays is provided with a support (23) extending along the other tray for supporting the other tray in the loaded state.

10. A sorting system comprising a sorting cart according to claim 8 or 9.

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