CN116442888A - Carriage folding goods shelf, wagon and loading method thereof - Google Patents

Abstract

The utility model discloses a carriage folding goods shelf, a truck and a loading method thereof, wherein the folding goods shelf comprises a frame, two opposite side frames of the frame are respectively hinged with an upper-layer carrier positioned in the frame, the upper-layer carrier is switched between a folding state and an unfolding state, and in the folding state, the upper-layer carrier is kept in a vertical state or a substantially vertical state and is close to the side frame hinged with the upper-layer carrier; in the unfolded state, the upper carrier is maintained in a horizontal or substantially horizontal state. The goods shelf structure adopts the foldable upper-layer goods shelf, and when express delivery transportation is required, the upper-layer goods shelf can be unfolded to realize layered storage of packages; when the express delivery transportation is not needed, the upper-layer carrier can be folded, at the moment, the carrier only occupies a small space in the carriage, so that the space in the carriage can be used for transporting other objects normally, and the use is convenient.

Description

Carriage folding goods shelf, wagon and loading method thereof

Technical Field

The utility model relates to the field of logistics equipment, in particular to a carriage folding goods shelf, a truck and a loading method thereof.

Background

At present, for packages needing to be transferred, the express company generally loads batch packages into a cage vehicle disclosed in Chinese patent utility model such as an authorized bulletin number CN216761804U, CN217598635U, and then reloads the cage vehicle into a truck for transferring, so that the mode saves manpower, reduces cost and improves efficiency. But the cage needs to be brought back in place with the vehicle after reaching the destination.

However, when many express delivery companies use trucks as rental vehicles, after the trucks reach a destination and finish unloading, the trucks need to be returned, and in the returning process, if a driver wants to transport other cargoes, the drivers cannot transport the cargoes normally because the trucks occupy the space in the carriage.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a carriage folding goods shelf, a truck and a loading method thereof.

The aim of the utility model is achieved by the following technical scheme:

the carriage folding goods shelf comprises a frame, wherein two opposite side frames of the frame are respectively hinged with an upper-layer carrier frame positioned in the frame, the upper-layer carrier frame is switched between a folding state and an unfolding state, and in the folding state, the upper-layer carrier frame is kept in a vertical state or a substantially vertical state and is close to the side frame hinged with the upper-layer carrier frame; in the unfolded state, the upper carrier is maintained in a horizontal or substantially horizontal state.

Preferably, the frame is provided with a set of fixing legs for fixing the frame in the vehicle cabin.

Preferably, the upper carrier is rotatably provided with a set of rollers.

Preferably, the axes of adjacent rollers are perpendicular to each other or the axes of adjacent rows or columns of rollers are perpendicular to each other.

Preferably, the outer side of the upper-layer carrier far away from the hinge joint of the upper-layer carrier and the frame is hinged with a folding supporting leg, and the extending direction of the folding supporting leg is vertical to the bearing surface of the upper-layer carrier when the folding supporting leg is in an opened state; in the folded state of the folding support legs, the extending direction of the folding support legs is parallel to the bearing surface of the upper-layer carrier.

Preferably, the folding leg is kept in an open state by a latch mechanism.

Preferably, the outer side of the upper-layer carrier on one side is hinged with the folding support leg, and in the unfolded state, the upper-layer carrier on the other side is erected on a hinged seat where the folding support leg is hinged.

Preferably, the upper carrier is kept in a folded state by means of quick manual clamps and/or stop pins.

Preferably, the upper carrier on at least one side is a plurality of the upper carriers, which are separated from each other and are arranged at equal heights.

Preferably, the inner sides of the two opposite side frames are respectively provided with a lower-layer carrier, the lower-layer carrier is switched between a folded state and an unfolded state, and in the folded state, the lower-layer carrier is kept in a vertical state or a substantially vertical state and is close to a side frame hinged with the lower-layer carrier; in the unfolded state, the lower carrier is kept in a lying state.

A truck comprising a folding pallet for a wagon as defined in any one of the preceding claims.

The truck loading method comprises the following steps: determining whether an upper carrier of a folding pallet of the carriage needs to be unfolded;

when the upper-layer carrier is determined to be required to be unfolded, firstly unfolding the upper-layer carrier on one side, and placing cargoes on the unfolded upper-layer carrier and below the upper-layer carrier; sequentially expanding the upper layer carrier frames on the other side from inside to outside, and after each expanding one upper layer carrier frame on the other side, placing cargoes above and below the expanded upper layer carrier frame;

the upper carrier is maintained in a collapsed condition when it is determined that the upper carrier does not need to be unfolded.

The technical scheme of the utility model has the advantages that:

the goods shelf structure adopts the foldable upper-layer goods shelf, and when express delivery transportation is required, the upper-layer goods shelf can be unfolded to realize layered storage of packages; when the express delivery transportation is not needed, the upper-layer carrier can be folded, at the moment, the carrier only occupies a small space in the carriage, so that the space in the carriage can be used for transporting other objects normally, and the use is convenient.

The frame of the utility model is fixedly connected with the carriage by adopting the fixing support legs, so that the shelf can be conveniently installed in the carriage without refitting the carriage structure, and the use is convenient.

The upper-layer carrier is provided with the rollers, so that the resistance of articles moving on the upper-layer carrier can be effectively reduced, the goods can be carried more easily, and the efficiency is higher.

The upper-layer luggage carrier is fixed by adopting the rapid manual clamp, is convenient to operate and is easier to use.

The goods shelf disclosed by the utility model does not need a power source at all, can be installed in a carriage by a bracket, does not need to modify a vehicle structure, and is more convenient to use.

The folding support legs are arranged on the upper-layer carrier, and can be unfolded to provide support when the upper-layer carrier is unfolded, so that the bearing capacity of the upper-layer carrier is effectively ensured; when the upper-layer carrier is folded, the folding support legs can be folded without affecting the space in the carriage. Meanwhile, the upper-layer carrier frames on the two sides share one set of folding support legs, so that the structure can be effectively simplified, and the folding operation is convenient.

Drawings

FIG. 1 is a perspective view of a folding pallet for a compartment of the present utility model;

FIG. 2 is a first perspective view of the folding pallet with transfer mechanism of the present utility model with the stage of the transfer mechanism in a lowered position;

FIG. 3 is a second perspective view of the folding pallet with transfer mechanism of the present utility model with the stage of the transfer mechanism in a lowered position;

FIG. 4 is a schematic view of the attachment of the stationary foot to the post of the present utility model;

FIG. 5 is a partial schematic view of the folding pallet of the present utility model secured within a vehicle compartment;

FIG. 6 is an enlarged view of area A of FIG. 1;

fig. 7 is an enlarged view of region B in fig. 3.

Detailed Description

The objects, advantages and features of the present utility model are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the utility model, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the utility model.

In the description of the embodiments, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in the specific orientation, and thus are not to be construed as limiting the present utility model. 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.

Example 1

The folding pallet for a carriage disclosed in the present utility model will be described with reference to the accompanying drawings, as shown in fig. 1 to 3, which includes a frame 100, two opposite side frames 110 of the frame 100 are respectively hinged with an upper carrier 200 positioned in the frame, the upper carrier 200 is switched between a folded state in which the upper carrier 200 is maintained in a vertical or substantially vertical state and is adjacent to the side frame 110 hinged thereto, and an unfolded state; in the unfolded state, the upper carrier 200 is maintained in a horizontal or substantially horizontal state.

As shown in fig. 1 to 3, the frame 100 is a rectangular frame structure, and includes two opposite side frames 110 and a top connecting beam 120 connected between the two side frames 110, the side frames 110 include a top beam 111 and a vertical column 112 vertically connected below the top beam 111, the vertical columns 112 are arranged at equal intervals, a mounting beam 113 is arranged between adjacent vertical columns, and fixing legs 130 are respectively arranged on the top beam 111 and the vertical column 112.

As shown in fig. 4 and 5, the fixing leg 130 includes a screw 131 screwed to the top beam 111 and the upright 112, and the screw 131 is fixed to the U-shaped member 114 on the upright and the top beam by at least two fastening nuts 132. The top ends of the screws 131 of the fixing legs 130 attached to the top beam 111 are provided with a pressing head 133 located above the top beam 111. The outer ends of the screws 131 of the fixing legs 130 connected to the upright 112 are provided with pressing heads 133 positioned at the outer sides of the upright 112, and the frame 100 can be effectively fixed in the cabin 800 by the pressing heads 133 on the fixing legs 130 abutting against the inner wall of the cabin. The pressing head 133 is connected with the ball 134 on the screw 131, so that the pressing head 133 can rotate relative to the ball to be better attached to the inner wall of the carriage 800.

As shown in fig. 1, the upper carrier 200 includes a bottom frame 210 and a pallet 220 disposed on the bottom frame 210, the pallet 220 has a square shape, and at least one side of the pallet 220 is parallel to the length direction of the frame. When the upper rack 200 is in the unfolded state, the supporting plate 220 is above the bottom frame 210, and at this time, the top surface of the supporting plate 220 is the bearing surface of the roll-over stand.

As shown in fig. 6, the side of the bottom frame 210 near the side frame 110 is hinged to the side frame 110, and a torsion spring 230 is further sleeved on the hinge shaft of the side frame 110 and the bottom frame 210, and the torsion spring 230 keeps the upper carrier 200 in a unfolded state in a normal state.

The upper rack 200 on each side may be a member, i.e., the length of one of the upper racks (the distance the upper rack extends along the length of the frame 100) is comparable to the length of the frame or compartment, and such a structure may facilitate folding and unfolding of the upper rack 200.

As shown in fig. 1, the upper carriers 200 on each side are multiple, they are separated from each other and are arranged at equal heights, and the lengths of the upper carriers 200 on each side may be the same or different, and the lengths of the upper carriers 200 on one side may be designed according to actual needs, preferably, the lengths of all the upper carriers 200 are the same and the length of each upper carrier is approximately 1/4 of the length of the frame. By adopting the structure, the carriage folding shelf is more flexible to use, for example, part of the upper layer carrier 200 on one side can be folded and unfolded, and meanwhile, the loading and unloading of the carriage folding shelf can be carried out manually.

The upper racks 200 on both sides may be identical or different in installation height, and preferably, the upper racks 200 on both sides are identical in installation height, that is, the heights of their carrying surfaces are parallel or equivalent in the unfolded state of the upper racks on both sides.

The sum of the widths of the upper racks 200 on both sides corresponds to the distance between the racks 110 on both sides, and the widths of the upper racks on both sides are the same, however, in other embodiments, the widths of the upper racks 200 on both sides may be different.

As shown in fig. 1, in order to facilitate the movement of the goods on the upper carrier 200, a set of rollers 240 are rotatably disposed on the upper carrier 200, the rollers 240 may be universal balls, rollers, etc., and the rollers 240 are preferably cylindrical rollers and are distributed in multiple rows and multiple columns, and when the upper carrier is in the unfolded state, the top of the rollers is higher than the top surface of the pallet, and at this time, the surface where the vertices of a set of rollers are located is the bearing surface of the upper carrier. When the goods are placed on the rollers 240 and moved, the rotation of the rollers 240 may reduce friction, thereby making the movement of the goods smoother.

In order to avoid that goods cannot be stably transported due to easy rolling and shaking of the goods on the rollers 240 during transportation, the axes of the adjacent rollers 240 are vertical, a group of rollers arranged along the depth direction of the carriage is defined as a row, and a group of rollers arranged along the depth direction of the carriage is defined as a row, namely, in a row of rollers, the axes of two adjacent rollers are vertical, and the axes of two rollers opposite to each other in the adjacent row are also vertical, and the axes of part of the rollers 240 in each row of rollers 240 extend horizontally and are vertical to the depth direction of the carriage, so that the design can increase resistance to a certain extent and reduce the moving and shaking conditions of the goods during transportation.

Or the axes of the rollers of adjacent rows or columns are made perpendicular to each other, i.e., the axes of one row or column of rollers extend in a direction perpendicular to the depth of the vehicle cabin, and the axes of the rollers of one or two rows or columns adjacent to the row or column extend in a direction parallel to the depth of the vehicle cabin.

As shown in fig. 1, when the upper carrier 200 is folded, the upper carrier 200 tends to fold under the action of gravity and the torsion spring 230, and in order to avoid the upper carrier 200 from folding automatically, the upper carrier 200 is kept folded by the quick manual clamp 300 and/or the limit pin when the upper carrier 200 is turned to the folded state.

As shown in fig. 1 and 2, the length of the bottom frame 210 of the upper carrier 200 does not exceed the distance between two adjacent columns 112, and at least one side of the bottom frame 210 has a wing plate 211 extending to the outside of the bottom frame 210, in the folded state of the upper carrier 200, the wing plate 211 abuts against the baffle plate 115 of the column 112, and meanwhile, a quick manual fixture 300 is provided on the baffle plate 115, and the specific structure of the quick manual fixture 300 is a known technology, for example, may be a structure disclosed in the authorized publication number CN 214686129U. When the wing 211 abuts against the baffle 115, the upper carrier 200 is secured by the ram 310 of the quick manual clamp 300 pressing against the wing 211. Preferably, wing plates 211 are disposed on two sides of each upper-layer carrier 200, and two quick manual clamps 300 matched with the wing plates 211 are disposed on the upright posts 112 on two sides of the corresponding upper-layer carrier 200.

When the limiting pins are adopted, the limiting pins may be a plurality of separable bolts inserted into the frame or bolts screwed into the frame, and when the upper-layer carrier 200 is in a folded state, the upper-layer carrier 200 is blocked by the limiting pins to limit the upper-layer carrier 200 from turning downwards, and the specific structure and principle of limiting the upper-layer carrier 200 by the limiting pins are known technology and are not repeated herein.

As shown in fig. 1 and 2, since the upper rack 200 needs to be placed with goods, the upper rack 200 needs to have sufficient support, at least one side of the upper rack 200 is hinged with a folding leg 400 on the outer side thereof away from the hinge of the upper rack 200 with the frame 100, the folding leg 400 extends in a direction perpendicular to the carrying surface of the upper rack 200 in the unfolded state, and the folding leg 400 extends in a direction parallel to the carrying surface of the upper rack 200 in the folded state.

That is, when the upper carrier 200 is unfolded, the lower ends of the folding legs 400 are equal to the bottom of the frame 100, preferably flush, and the folding legs 400 and the frame 100 can be carried on the floor of the compartment, thereby effectively providing support to the outside of the upper carrier 200 through the folding legs 400.

Only one folding leg 400 may be provided on each upper carrier 200, and preferably, as shown in fig. 1, 2 and 7, two folding legs 400 near both ends of each upper carrier 200 are provided on the outer side of each upper carrier 200, and the two folding legs 400 are connected by a connecting rod 410, so that support can be better provided for each upper carrier 200.

As shown in fig. 7, the folding leg 400 is hinged to a hinge seat 240 at the outer side of the upper carrier 200, and when the upper carrier 200 is unfolded, the extending direction of the shaft around which the folding leg 400 is rotated is parallel to the length direction of the frame 100 (the depth direction of the compartment). When the folding leg 400 is supported in the unfolded state, the folding leg 400 is kept in the unfolded state by the latch mechanism 500 in order to ensure that the folding leg is not folded in the unfolded state.

As shown in fig. 7, a quick manual latch 510 is provided at the outer side of the folding leg 400, and a latch hook 520 matched with the quick manual latch 510 is provided on the hinge base 240, and when the upper carrier 200 is unfolded and the folding leg 400 is unfolded, the latch hook 520 above the upper carrier 200 is hooked by a snap ring 521 of the quick manual latch 510, thereby fixing the folding leg 400. The specific structure of the quick manual lock 510 is known, for example, the structure disclosed in the chinese patent with the issued notice CN 210362130U.

As shown in fig. 7, in order to simplify the structure and reduce the operation difficulty, the outer side of the upper carrier 200 on one side is hinged with the folding leg 400, and in the unfolded state, the upper carrier 200 on the other side is mounted on the hinge seat 240 hinged with the folding leg 400, specifically, the hinge seat 240 has a plane protruding to the outside of the bottom frame of the upper carrier 200 on one side, and the bottom frame of the upper carrier on the other side is mounted on the plane, so that the folding leg 400 does not need to be provided on the upper carrier 200 on both sides.

As shown in fig. 1 to 3, in order to facilitate the movement of the articles on the floor of the compartment, the inner sides of the opposite side frames 110 are also provided with lower-layer carriers 600, respectively, the lower-layer carriers 600 being switched between a folded state in which the lower-layer carriers 600 are maintained in a vertical or substantially vertical state and are adjacent to the side frames 110 hinged thereto; in the unfolded state, the lower carrier 600 remains in a lying state. The lower carrier 600 is hinged to a lower mounting beam at the lower end of the side frame 110, which is also a plurality of and each of the lower carriers 600 is turned upward to be folded.

The specific structure of the lower rack 600 is the same as that of the upper rack 200, and will not be described herein, and the positions of the lower rack 600 and the upper rack 200 are in one-to-one correspondence. As shown in fig. 7, the folded limit mode of the lower carrier 600 is identical to the folded limit mode of the upper carrier 200, that is, the lower carrier 600 is also folded by attaching the pressure receiving plate 610 on the lower carrier to the baffle 115 of the upright by two quick manual clamps 300.

Example 2

This embodiment is equivalent to the overall structure of embodiment 1 described above, and differs in that: an upper carrier at one end of the frame and a lower carrier opposite thereto are eliminated, and a transfer device 700 is provided at this position.

As shown in fig. 2 and 3, four upper-layer loading shelves and four lower-layer loading shelves are arranged on the side frame on the right side of the frame. Three upper layer carrying shelves and three lower layer carrying shelves corresponding to the upper layer carrying shelves one by one are arranged on the side frame on the left side of the frame, so that a vacancy positioned at the outlet of the carriage folding shelf is arranged beside the side frame on the left side, and the transfer device 700 is arranged at the vacancy.

As shown in fig. 2 and 3, the transfer device 700 includes a stage 710, and the stage 710 has a square shape and a size corresponding to that of the upper and lower load carriers. A lifting mechanism 720 is disposed below the stage 710, and the lifting mechanism 720 is preferably a scissor type lifting mechanism, so that the height of the stage 710 after being lowered is lower, and the height of the overall structure is smaller. At this time, the actuator 721 of the scissor lift mechanism is preferably a gas spring, the gas spring is controlled by a control handle, a control button or a control pedal, preferably, the gas spring 721 is controlled by the control pedal 722, when the control pedal is depressed, the telescopic shaft of the gas spring can be extended and contracted, and at this time, if a heavy object is arranged on the object stage, the object stage can be lowered to a low position; otherwise, if no goods exist on the objective table, the objective table can be lifted to a high position. Of course, the lifting mechanism 720 may be a lifting structure similar to a lifting chair.

The lift mechanism 720 moves the subject table 710 between a lowered position, as shown in fig. 2, in which the top surface of the subject table 710 is adjacent to the top surface of the underlying carrier 600. As shown in fig. 3, in the raised position, the top surface of the carrier 710 is at a height corresponding to the height of the support surface of the upper carrier 200, preferably the top surface of the carrier 710 is flush with or slightly below the support surface of the upper carrier 200, which facilitates movement of the cargo on the upper carrier 200 onto the carrier 710.

In this structure, when unloading is required, the lifting mechanism 720 lifts the stage 710 to a high position, then a certain amount of goods is manually placed on the stage 710, then the control pedal is depressed to enable the telescopic shaft of the gas spring to be telescopic, at this time, the stage 710 and the goods thereon retract the telescopic shaft of the gas spring so that the stage 710 moves downward to a low position, and then the control pedal is stopped from being depressed. The cargo on the object table 710 is then manually moved to the unloading chute 900 at the car exit to effect unloading. After unloading is completed, the control pedal is stepped on again to enable the telescopic shaft of the gas spring to stretch, and at the moment, the telescopic shaft automatically stretches out to enable the object stage 710 to be lifted to a high position again due to the fact that no goods exist on the object stage 710. And placing a certain amount of cargoes on the object stage 710 again, enabling the telescopic shaft of the gas spring to be telescopic again, at the moment, lowering the object stage 710 to a low position for blanking, and repeating the above process to finish unloading all cargoes on the upper-layer carrier 200. All the upper racks 200 may be folded for unloading the goods on the lower rack 600, or the upper racks 200 may be folded for unloading the goods on the lower rack 600.

The structure effectively reduces the difficulty of unloading cargoes, improves the safety of unloading cargoes and is simple to operate. Meanwhile, the lifting mechanism adopting the gas spring does not need an additional power source, the carriage folding goods shelf can be directly arranged in the carriage, any change on the truck is not needed, and the applicability is strong and the universality is good.

Example 3

This embodiment discloses a wagon, as shown in fig. 3, comprising a folding carriage shelf as described in the above embodiment, wherein the folding carriage shelf is fixed in the wagon. When the folding shelf of the carriage is installed, the frame 100 is fixed in the carriage by the fixing legs 130, and then the upper and lower racks 200 and 600 are sequentially installed at the inner sides of the side frames 110, preferably, the upper and lower racks are installed from inside to outside.

Example 4

The embodiment discloses a truck loading method, which is based on the truck in the above embodiment, and comprises the following steps:

determining whether an upper rack 200 of the folding shelves of the car is required to be unfolded;

when it is determined that the upper rack 200 is to be unfolded, the upper rack 200 on one side (e.g., the right side) is unfolded, and the goods are placed on the unfolded upper rack 200 and under the upper rack 200, and at this time, the goods may be material bags filled with a plurality of packages. If the goods shelf also comprises a lower layer of goods shelf, after the goods of the upper layer of goods shelf on the right side are piled up, the lower layer of goods shelf can be unfolded and fully put on the goods. Next, the upper racks 200 on the other side (left side) are sequentially unfolded from inside to outside, and after each of the upper racks 200 on the left side is unfolded, goods are placed above and below the unfolded upper racks 200.

When it is determined that the upper rack 200 does not need to be unfolded, the upper rack 200 is maintained in a folded state, at which time the items to be placed can be placed between the frames.

Further, when goods are placed on the upper layer carrier and the lower layer carrier on the right side, the upper layer carrier and the lower layer carrier are sequentially unfolded from inside to outside and placed on the goods, namely, firstly, the innermost upper layer carrier and the innermost lower layer carrier are unfolded and placed on the goods, then, the upper layer carrier and the lower layer carrier on the right side are unfolded and placed on the goods adjacent to the innermost upper layer carrier and the innermost lower layer carrier, and all the upper layer carrier and the lower layer carrier on the right side are fully filled with the goods according to the sequence.

The utility model has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims (12)

1. Carriage folding goods shelves, including the frame, its characterized in that: the upper layer carrier is switched between a folded state and an unfolded state, and in the folded state, the upper layer carrier is kept in a vertical state or a substantially vertical state and is close to the side frame hinged with the upper layer carrier; in the unfolded state, the upper carrier is maintained in a horizontal or substantially horizontal state.

2. The folding compartment shelf of claim 1, wherein: the frame is provided with a group of fixing support legs for fixing the frame in a carriage.

3. The folding compartment shelf of claim 1, wherein: the upper layer carrier is provided with a group of rollers in a autorotation way.

4. A folding compartment shelf according to claim 3, characterized in that: the axes of adjacent rollers are perpendicular to each other or the axes of rollers of adjacent rows or columns are perpendicular to each other.

5. The folding compartment shelf of claim 1, wherein: the outer side of the upper layer carrier far away from the hinge joint of the upper layer carrier and the frame is hinged with a folding supporting leg, and the extending direction of the folding supporting leg is vertical to the bearing surface of the upper layer carrier when the folding supporting leg is in an opened state; in the folded state of the folding support legs, the extending direction of the folding support legs is parallel to the bearing surface of the upper-layer carrier.

6. The folding compartment shelf of claim 5, wherein: the folding leg is kept in an open state by a locking mechanism.

7. The folding compartment shelf of claim 5, wherein: the outer side of the upper-layer carrier frame on one side is hinged with the folding supporting legs, and in an unfolding state, the upper-layer carrier frame on the other side is arranged on a hinged seat where the folding supporting legs are hinged.

8. The folding compartment shelf of claim 1, wherein: the upper layer carrier is kept in a folded state through a quick manual clamp and/or a limiting pin.

9. The folding compartment shelf of claim 1, wherein: the upper-layer carrier frame on at least one side is a plurality of, and the upper-layer carrier frames are mutually separated and are arranged at equal heights.

10. The folding compartment shelf of claim 1, wherein: the inner sides of the two opposite side frames are respectively provided with a lower-layer carrier, the lower-layer carrier is switched between a folded state and an unfolded state, and in the folded state, the lower-layer carrier is kept in a vertical state or a substantially vertical state and is close to a side frame hinged with the lower-layer carrier; in the unfolded state, the lower carrier is kept in a lying state.

11. Truck, its characterized in that: a folding pallet comprising a compartment as claimed in any one of claims 1 to 10.

12. The truck loading method according to claim 11, comprising the steps of: determining whether an upper carrier of a folding pallet of the carriage needs to be unfolded;

when the upper-layer carrier is determined to be required to be unfolded, firstly unfolding the upper-layer carrier on one side, and placing cargoes on the unfolded upper-layer carrier and below the upper-layer carrier; sequentially expanding the upper layer carrier frames on the other side from inside to outside, and after each expanding one upper layer carrier frame on the other side, placing cargoes above and below the expanded upper layer carrier frame;

the upper carrier is maintained in a collapsed condition when it is determined that the upper carrier does not need to be unfolded.