CN111452818A - Truck and truck carriage - Google Patents

Abstract

The invention relates to a truck and a truck carriage, wherein the truck carriage comprises an underframe, a driving mechanism, a locking mechanism and two boxes, wherein the driving mechanism, the locking mechanism and the two boxes are arranged on the underframe; the upper surface of chassis is equipped with the slide along vertical, and at least one box can slide along the slide under actuating mechanism's effect in order to open and close the protection casing, and when the protection casing was in the closed condition, the relative position of two boxes can be locked to locking mechanism. The carriage of the truck can simplify the structure of the truck, is convenient to install and operate, can protect goods and prevent damage.

Description

Truck and truck carriage

Technical Field

The invention relates to the technical field of trucks, in particular to a truck and a carriage of the truck.

Background

At present, the conventional freight car is mainly used for transporting goods in a flat car and tarpaulin transportation mode, specifically, the goods are placed behind the flat car and are covered on the surface of the goods through the tarpaulin and fixed with the flat car, and the tarpaulin can prevent wind and rain and prevent the goods from being wetted or falling off in the transportation process.

However, due to the fact that the sizes and the shapes of different cargos are different, the tarpaulin can be installed inconveniently, the tarpaulin with various specifications and sizes is required to be arranged for installation, ropes with different lengths are required, the tarpaulin and the ropes are wasted, and when external objects (such as stones) fall, the tarpaulin cannot be blocked, and the cargos can be damaged.

How to simplify the structure of the truck, facilitate the installation and operation, and provide protection for goods, and prevent the damage, is the technical means that the technicians in this field need to solve.

Disclosure of Invention

The invention aims to provide a truck and a carriage of the truck, which can simplify the structure of the truck, facilitate the installation and operation, protect goods and prevent the goods from being damaged.

In order to solve the technical problem, the invention provides a carriage of a truck, which comprises an underframe, a driving mechanism, a locking mechanism and two box bodies, wherein the driving mechanism, the locking mechanism and the two box bodies are arranged on the underframe; the upper surface of chassis is equipped with the slide along vertically, at least one the box can be in actuating mechanism's effect is followed the slide slides with the switching the protection casing, and works as when the protection casing is in the closed condition, locking mechanical system can lock two the relative position of box.

In two boxes, at least one box can slide along the slide under actuating mechanism's effect to when the box slides along the slide and to the cooperation of two relative one sides of box and intercommunication, enclose between the two and close the inside protection casing that is used for holding the goods that forms, then accessible locking mechanism locks the relative position of two boxes, guarantees in the transportation, and two boxes are in the fit state, and the protection casing is stable and provides the protection to the goods that is located its inside. The setting of slide can guarantee that the box can accurately open and shut after removing.

When loading, firstly, the driving mechanism drives the box bodies to slide to separate the two box bodies, at the moment, the protective cover is opened, then the goods to be transported are placed at the preset position on the bottom frame, the driving mechanism is used for enabling at least one box body to slide to one side end, opposite to the two box bodies, of the slide way to be matched and communicated, at the moment, the goods are located in the closed protective cover, and finally the relative positions of the two box bodies are locked through the locking mechanism. In the transportation, because the relative position of two boxes is stable, the protection casing can avoid the goods to take place the condition that wind blows, drench and even drop to, because the shape and the size of the protection casing that two boxes enclose are fixed, can not change along with the size and the shape of goods, the lateral wall of protection casing is not closely laminated with the goods, consequently, places the goods and can also avoid the condition that external object (such as falling rocks etc.) caused the damage to the goods in the protection casing.

Optionally, the drive mechanism comprises a drive member and a transmission assembly; the transmission assembly comprises a gear and a rack which are meshed with each other, the gear is arranged on the box body, the rack is arranged in parallel with the slide way, and the driving piece can drive the gear to rotate and drive the box body to move along the rack.

Optionally, the number of the racks and the number of the gears are two, and the two racks are respectively located on two sides of the underframe; the transmission assembly further comprises a transmission shaft and two connecting shafts which are respectively connected to two ends of the transmission shaft, the transmission shaft is in transmission connection with the connecting shafts through a bevel gear set, the driving piece can drive the transmission shaft to rotate, and the two connecting shafts are respectively coaxially fixed with the two gears.

Optionally, the drive member comprises a motor and/or a manual wheel.

Optionally, the driving piece includes manual wheel, the transmission assembly still includes the hand rocker, the hand rocker with through bevel gear group transmission connection between the transmission shaft.

Optionally, two opposite sides of the box body are respectively provided with a sleeving structure and are matched with each other through the sleeving structure to form the protective cover.

Optionally, both of the cases can slide along the slide; the locking mechanism comprises a locking seat and locking pieces arranged on the box body, the locking seat is arranged on the bottom frame, the locking pieces are provided with first locking structures, and the locking seat is provided with second locking structures matched with the first locking structures.

Optionally, the locking seat includes locating the base of chassis and locating the lock handle of base, the both ends of lock handle are equipped with respectively second locking structure, the lock handle can for the base rotates and drives second locking structure with first locking structure cooperation or break away from.

Optionally, the lock handle includes a rotating shaft and an action block, the lock handle can rotate around the axis of the rotating shaft relative to the base, the action block is arranged on the side wall of the rotating shaft, and when the action block is located below the rotating shaft, the first locking structure is matched with the second locking structure.

Optionally, the rotating shaft is parallel to the sliding way, one of the first locking structure and the second locking structure is provided with a C-shaped groove, the other one of the first locking structure and the second locking structure is provided with a T-shaped block or an L-shaped block, and an opening end face of the C-shaped groove is perpendicular to the sliding way.

Optionally, when the first locking structure and the second locking structure are engaged, an end surface of the box facing the other box can abut against the base.

Optionally, the bottom frame is further provided with a limiting member for limiting the sliding of the box body.

Optionally, the number of the slideways is two, and the slideways are respectively arranged on two sides of the underframe; at least two guide pieces which are arranged at intervals are respectively arranged on two sides of the bottom of the box body and slide along the slide way, and each guide piece comprises a guide wheel which can roll along the slide way.

Optionally, each of the guide members is provided with three guide wheels, and among the three guide wheels, one guide wheel can roll along the top wall of the slide rail, one guide wheel can roll along the bottom wall of the slide rail, and one guide wheel can roll along the side wall of the slide rail.

In addition, the invention also provides a truck, which comprises the carriage of the truck.

The technical effect of the truck with the carriage is similar to that of the carriage, and is not repeated herein for saving space.

Drawings

FIG. 1 is a schematic structural view of a wagon body of a truck according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the shield in an open position;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic view of the hood in an open position and loaded with cargo;

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

FIG. 7 is a schematic view of the construction of the undercarriage;

FIG. 8 is a partial top view of the chassis;

FIG. 9 is a schematic view of the drive mechanism;

FIG. 10 is a partial schematic view of the drive mechanism;

FIG. 11 is a schematic view of the latch mechanism in a locked condition;

FIG. 12 is a schematic view of the locking mechanism in an unlocked state;

fig. 13 is a schematic structural view of the guide mechanism.

In the accompanying fig. 1-13, the reference numerals are illustrated as follows:

1-bottom frame, 11-slideway;

2-box, 21-guide, 211-guide wheel;

3-a driving mechanism, 31-a transmission component, 311-a gear, 312-a rack, 313-a transmission shaft, 314-a connecting shaft, 315-a bevel gear set, 316-a hand rocker, 32-a motor, 33-a manual wheel and 34-a bracket;

4-locking mechanism, 41-locking piece, 42-locking seat, 421-base, 422-rotating shaft, 423-action block, 43-C type groove, 44-T type block or L type block;

5-cargo;

6-a limiting part.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention provides a truck and a truck carriage, wherein the truck comprises the truck carriage, and particularly, the truck carriage comprises an underframe 1, a driving mechanism 3, a locking mechanism 4 and two boxes 2, the driving mechanism 3, the locking mechanism 4 and the two boxes 2 are arranged on the underframe 1, the two boxes 2 are oppositely arranged and can be matched and communicated to form a protective cover, a cargo 5 can be placed in the protective cover, a slide way 11 is longitudinally arranged on the upper surface of the underframe 1 (which means the length direction of the truck), at least one box 2 in the two boxes 2 can slide along the slide way 11 under the driving action of the driving mechanism 3 to realize the opening and closing of the two protective covers, and when the protective cover is in a closed state (one side ends of the two boxes 2 are matched and communicated), the locking mechanism 4 can lock the relative positions of the two boxes 2.

In detail, in two boxes 2, at least one box 2 can slide along slide 11 under the effect of actuating mechanism 3 to when box 2 slides along slide 11 to the opposite one side cooperation of two boxes 2 and communicate, enclose between the two and form inside protection casing that is used for holding goods 5, then accessible locking mechanism 4 locks the relative position of two boxes 2, guarantees that in the transportation, two boxes 2 are in the fit state, and the protection casing is stable and provides the protection to goods 5 that are located inside. The setting of slide 11 can guarantee that box 2 can accurately open and shut after removing.

Specifically, when loading, the driving mechanism 3 drives the two boxes 2 to slide to separate the two boxes 2, at this time, as shown in fig. 3 and 4, the protective cover is opened, then the goods 5 to be transported are placed at the preset position on the chassis 1 (as shown in fig. 5 and 6), then the driving mechanism 3 acts to enable at least one box 2 to slide along the slide rail 11 to one side end, opposite to the two boxes 2, of the two boxes to be communicated in a matched mode, as shown in fig. 1 and 2, at this time, the goods 5 are located in the closed protective cover, and finally the relative positions of the two boxes 2 are locked through the locking mechanism 4. In the transportation, because the relative position of two boxes 2 is stable, the protection casing can avoid goods 5 to take place the condition that wind blows, drench and even drop to, because the shape and the size of the protection casing that two boxes 2 enclose are fixed, can not change along with the size and the shape of goods 5, the lateral wall of protection casing is not closely laminated with goods 5, consequently, places goods 5 and can also avoid the condition that external object (such as falling rocks etc.) caused the damage to goods 5 in the protection casing.

In the above embodiment, the driving mechanism 3 includes a driving member and a transmission assembly 31, wherein the transmission assembly 31 includes a gear 311 and a rack 312 engaged with each other, the gear 311 is disposed on the box 2 and is in transmission connection with the driving member, the rack 312 is disposed parallel to the slideway 11, and the driving member can drive the gear 311 to rotate and drive the box 2 to move along the rack 312. Or, can also set up transmission assembly 31 to including gear 311 and chain or lead screw and nut isotructure all can, and when setting up drive mechanism to the structure of gear 311 and rack 312, stability is good and be convenient for realize accurate control, guarantees that two boxes 2 can realize accurate cooperation.

Of course, in this embodiment, the driving mechanism 3 may be a hydraulic cylinder, the hydraulic cylinder is disposed on the chassis 1, the box 2 slides along the slideway 11 under the action of a piston rod of the hydraulic cylinder, and when the driving mechanism 3 is configured as a driving member and transmission assembly 31, the moving distance of the box 2 is not limited, and the flexibility is good.

In the above embodiment, the number of the racks 312 and the gears 311 is two, as shown in fig. 8 and 9, the two racks 312 are respectively located at two sides of the bottom chassis 1, the transmission assembly 31 further includes a transmission shaft 313 and two connection shafts 314 respectively connected to two ends of the transmission shaft 313, the transmission shaft 313 and the connection shafts 314 are connected through the bevel gears 311 to realize transmission, the driving member can drive the transmission shaft 313 to rotate, and the two connection shafts 314 are respectively coaxially fixed with the two gears 311. As shown in fig. 10, the end of the transmission shaft 313 is transmitted to the connection shaft 314 through the bevel gear set 315, and when the driving member drives the transmission shaft 313 to rotate, the connection shaft 314 can be driven to rotate through the bevel gear set 315, so as to drive the gear 311 to rotate and move along the length direction of the rack 312.

That is to say, the driving member drives the transmission shaft 313 to rotate, and drives the two connecting shafts 314 to rotate through the transmission shaft 313, so as to realize the movement of the box body 2, or the number of the gears 311 and the racks 312 can be set to only one, at this time, the racks 312 are set at the middle position of the bottom frame 1, the driving member drives the gears 311 to rotate, so that the box body 2 can move along the slide rail 11, and the number of the gears 311 and the racks 312 is set to two, so that the acting force between the single group of the gears 311 and the racks 312 can be reduced, and the two racks 312 are respectively arranged at the two sides of the bottom frame 1 without occupying the inner space of the protective cover, thereby avoiding the situation of interference and even damage with the. In addition, the two driving parts can drive the two gears 311 to rotate respectively, and when the driving parts, the transmission shaft 313 and the two connecting shafts 314 are arranged to drive the two gears 311, the whole structure can be simplified, synchronization can be realized conveniently, and the stable movement of the box body 2 can be ensured.

Specifically, as shown in fig. 9, the driving mechanism further includes a bracket 34, and the driving member and transmission assembly 31 is integrated with the bracket 34, so that the driving member and transmission assembly 31 is conveniently installed and fixed.

Further, the driving member includes a motor 32 and/or a manual wheel 33, that is, the box 2 may be driven by the motor 32 to slide along the slideway 11, or the box 2 may be driven by the manual wheel 33 to slide along the slideway 11, which is not limited herein. As shown in fig. 9, in this embodiment, the driving member includes both the motor 32 and the manual wheel 33, and particularly, during the use process, the driving of the motor 32 or the manual wheel 33 can be selected according to actual conditions, so as to ensure that the box body 2 can be moved under any conditions.

Specifically, when the driving member is provided with the motor 32, the driving member further comprises a speed reducer arranged between the motor 32 and the transmission shaft 313, and when the driving member is provided with the manual wheel 33, as shown in fig. 10, the transmission assembly 31 further comprises a hand lever 316, and transmission between the hand lever 316 and the transmission shaft 313 is realized through a bevel gear set 315, that is, sequential transmission connection is realized through the bevel gear set 315 among the hand lever 316, the transmission shaft 313 and the connecting shaft 314, so that the structure is simple, and the transmission is stable. Alternatively, the manual wheel 33 may be disposed at an end of the transmission shaft 313, and the manual wheel 33 may rotate to directly drive the transmission shaft 313 to rotate, which is not limited herein. In addition, as shown in fig. 8 and 9, in the present embodiment, the number of the manual wheels 33 is two and the two manual wheels are respectively located on the left and right sides of the vehicle compartment, so that the manual wheels 33 can be operated manually by the operator. In addition, the position of the motor 32 is not required, and may be set in the middle of the transmission shaft 313 or in the end of the transmission shaft 313.

In the above embodiment, the opposite sides of the two cases 2 are respectively provided with the sleeving structures and are matched with each other through the sleeving structures to form the protective cover, of course, the structure of the opposite side of the two cases 2 is not limited, if the opposite side end faces of the two cases 2 can be tightly attached, the opposite side end faces are locked through the locking mechanism 4, when the sleeving connection is set and the sleeving connection is matched through the sleeving connection, the end parts of the opposite sides of the two cases are partially overlapped, and the situation that dust or rainwater enters due to the fact that a gap is reserved between the two cases can be prevented. In addition, in the present embodiment, the sizes of the spaces inside the two cases 2 may be the same or different, and are not limited specifically herein.

In the above embodiment, when both of the two cases 2 are capable of sliding along the slide rail 11, that is, the two cases 2 are capable of sliding along the slide rail 11 under the action of the driving mechanism 3 corresponding to the two cases, the locking mechanism 4 includes the locking seat 42 and the locking piece 41 disposed on each case 2, wherein the locking seat 42 is disposed on the chassis 1, the locking piece 41 is provided with the first locking structure, and the locking seat 42 is provided with the second locking structure adapted to each first locking structure. That is, each box 2 is provided with one locking member 41, the chassis 1 is provided with a locking seat 42, the locking seat 42 is provided with two second locking structures, when the box 2 moves to the position of the locking seat 42, the first locking structure of the locking member 41 and the second locking structure of the locking seat 42 can be matched to realize the fixation between the box 2 and the chassis 1, and when the two boxes 2 are respectively fixed with the chassis 1, the relative positions of the two boxes 2 are fixed.

Or, in this embodiment, the locking member 41 and the locking seat 42 may be respectively disposed on the two cases 2, when the two cases 2 slide along the slideway 11 to be matched, the two cases 2 are fixed by being matched with the locking member 41 through the locking seat 42, and when the locking seat 42 is disposed on the bottom chassis 1, the relative position of the cases 2 and the bottom chassis 1 may be stable, thereby avoiding the occurrence of the movement of the protection cover, and facilitating the determination of the preset position. Specifically, should predetermine the position and do not do the restriction, as long as guarantee when two 2 cooperations of box back, the goods of placing in the position of predetermineeing can be located the protection casing.

When only one box 2 can slide along the slide rail 11, the other box 2 is fixed relative to the chassis 1, and at this time, the box 2 sliding along the slide rail 11 is provided with the locking member 41, and the locking seat 42 may be provided on either the box 2 or the chassis 1, which is not limited herein.

And two boxes 2 all can be along the slide 11 when sliding, can improve the flexibility of this protection casing, and specifically in the use, the slip of two boxes 2 is independent each other, can select two boxes 2 to slide along slide 11 simultaneously according to actual conditions, perhaps with one of them box 2 through locking piece 42 and locking seat 41 with chassis 1 locking, another box 2 slides along slide 11 in order to realize opening and shutting all can.

Further, the locking seat 42 includes a base 421 disposed on the bottom chassis 1 and a locking handle disposed on the base 421, the two ends of the locking handle are respectively provided with the second locking structure, and the locking handle can rotate relative to the base 421 and drive the second locking structure to be engaged with or disengaged from the first locking structure. So set up, when locking and unblock the box 2, only need through rotate the lock handle can to, the rotation of lock handle can drive two second locking structure and cooperate or break away from with the first locking structure that corresponds simultaneously, and it is comparatively convenient to operate.

In the above embodiment, the lock handle includes the rotating shaft 422 and the action block 423, the lock handle can rotate around the axis of the rotating shaft 422 relative to the base 421, the action block 423 is disposed on the side wall of the rotating shaft 422, and when the action block 423 is located below the rotating shaft 422, the first locking structure and the second locking structure are engaged. Under the natural state, locate the action piece 423 of pivot 422 lateral wall because the effect of self gravity will move down to the below of pivot 422 to action piece 423 will drive pivot 422 rotation at the in-process that moves down, thereby realize the cooperation locking of first locking structure and second locking structure, that is to say, after two box 2 cooperations are with the two locking back through locking mechanism 4, if there is not external force effect, the lock handle will keep two boxes 2 to be in the locking state under the effect of self gravity. When the unlocking is needed, only the action block 423 of the lock handle needs to be moved to move upwards and drive the rotating shaft 422 to rotate so as to realize the unlocking, and the unlocking device is simple in structure and convenient to operate.

In the above embodiment, the rotating shaft 422 of the locking seat 41 is parallel to the slideway 11, and one of the first locking structure and the second locking structure is provided with the C-shaped groove 43, and the other one of the first locking structure and the second locking structure is provided with the T-shaped block or L-shaped block 44, wherein the opening end surface of the C-shaped groove is perpendicular to the length direction of the slideway 11, the big end of the T-shaped block or L-shaped block 44 is provided with the stopper, when the big end is positioned in the C-shaped groove 43 and the stopper can abut against the inner wall of the opening side of the C-shaped groove 43, as shown in fig. 11, the T-shaped block or L-shaped block 44 cannot move along the slideway 11 relative to the C-shaped groove 43, so as to achieve locking, and when the second locking structure rotates with the lock handle until the stopper is positioned at the opening of the C-shaped groove 43, as shown in fig. 12, at this time, the T-shaped block or L-shaped block 44 can slide along the slideway 11 relative to achieve the unlocking state of the locking mechanism 4.

Specifically, as shown in fig. 11 and 12, the locking member 41 may be provided with a C-shaped groove 43, the locking seat 42 may be provided with a T-shaped block or L-shaped block 44, or the locking member 41 may be provided with a T-shaped block or L-shaped block 44, and the locking seat 42 may be provided with a C-shaped groove 43, which is not particularly limited herein.

In the above embodiment, when the first locking structure and the second locking structure are engaged, the end surface of the casing 2 facing the other casing 2 can abut against the base 421, that is, the base 421 can limit the movement of the casing 2, and when the single casing 2 moves along the slide 11 to abut against the base 421, the casing 2 is moved to the position and can be engaged and locked with the other casing 2. Of course, in this embodiment, a limiting structure may be further provided to limit the movement of the box 2 from the preset position, and when the base 421 is used to limit the movement of the box 2, the overall structure may be simplified.

In the above embodiment, the chassis 1 is further provided with the limiting member 6, the limiting member 6 is used for limiting the sliding of the box body 2, the limiting member 6 can limit the movement of the box body 2 from two ends, when the box body 2 slides along the slide rail 11 away from another box body 2 to abut against the limiting member 6, which indicates that the box body 2 has reached the maximum opening position, the limiting member 6 is arranged to prevent the box body 2 from being separated from the slide rail 11.

That is, the base 421 can limit the movement of the box 2 from the middle of the slide 11, and the stopper 6 can limit the movement of the box 2 from the end of the slide 11, so that the box 2 can slide along the slide 11 between the base 421 and the stopper 6 under the action of the driving mechanism 3.

In the above embodiment, the number of the slideways 11 is two, and the two slideways are respectively arranged on two sides of the bottom frame 1, at least two guide pieces arranged at intervals are respectively arranged on two sides of the bottom of the box body 2 capable of sliding along the slideways 11, and each guide piece 21 comprises a guide wheel 211 capable of rolling along the slideways 11. The arrangement of the two slide ways 11 and the guide wheels 211 can ensure that the box body 2 can keep stable in the process of sliding along the slide ways 11. Or, in this embodiment, it may also be that one slide 11 is provided as a guide, only one guide 21 is provided at the bottom of the box 2, and rollers capable of rolling along the upper end surface of the chassis 1 are provided at other positions at the bottom of the box 2, and the number of the slides 11 is two, and when the guides respectively adapted to the two slides 11 are provided at the bottom of the box 2, it is possible to ensure that the box 2 slides more stably. Specifically, the number of the guide members 21 is not limited, and as shown in fig. 1, in the present embodiment, three guide members 21 are provided on one side of the bottom of each box 2 capable of sliding along the slide 11, but two, four or more guide members may be provided.

Further, as shown in fig. 13, each guide 21 is provided with three guide wheels 211, wherein a first guide wheel 211 can roll along the top wall of the slide 11, a second guide wheel 211 can roll along the bottom wall of the slide 11, and a third guide wheel 211 can roll along the side wall of the slide 11, wherein the rolling axes of the first guide wheel 211 and the second guide wheel 211 are parallel and perpendicular to the rolling axis of the third guide wheel 211, so that the three guide wheels 211 and the slide 11 can be arranged in a position relationship during transportation to limit the swaying of the car in the transverse direction, the longitudinal direction and the perpendicular direction, so as to ensure the position stability of the car, and the three guide wheels 211 can ensure that the car is prevented from skewing or even being jammed during sliding along the slide 11.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (15)

1. The carriage of the truck is characterized by comprising an underframe (1), a driving mechanism (3) arranged on the underframe (1), a locking mechanism (4) and two boxes (2), wherein the two boxes (2) are oppositely arranged and can be matched and communicated to form a protective cover for placing goods (5);

the upper surface of chassis (1) is equipped with slide (11) along vertically, at least one box (2) can be in the effect of actuating mechanism (3) is followed slide (11) slide with the switching the protection casing, and when the protection casing is in the closed condition, locking mechanical system (4) can lock two the relative position of box (2).

2. A wagon according to claim 1, wherein the drive mechanism (3) comprises a drive and transmission assembly (31);

the transmission assembly (31) comprises a gear (311) and a rack (312) which are meshed with each other, the gear (311) is arranged on the box body (2), the rack (312) is arranged in parallel with the slide way (11), and the driving piece can drive the gear (311) to rotate and drive the box body (2) to move along the rack (312).

3. A wagon according to claim 2, wherein the number of racks (312) and gears (311) is two, two racks (312) being located on either side of the underframe (1);

the transmission assembly (31) further comprises a transmission shaft (313) and two connecting shafts (314) which are respectively connected to two ends of the transmission shaft (313), the transmission shaft (313) is in transmission connection with the connecting shafts (314) through a bevel gear set (315), the driving piece can drive the transmission shaft (313) to rotate, and the two connecting shafts (314) are respectively coaxially fixed with the two gears (311).

4. A wagon according to claim 3, wherein the drive comprises an electric motor (32) and/or a hand wheel (33).

5. The wagon of claim 4, wherein the drive element comprises a manual wheel (33), the transmission assembly (31) further comprises a hand lever (316), and the hand lever (316) is in transmission connection with the transmission shaft (313) through a bevel gear set (315).

6. A wagon compartment as claimed in any one of claims 1-5, wherein the two opposite sides of the container body (2) are each provided with a socket and cooperate via the sockets to form the protective cover.

7. A wagon compartment according to any one of claims 1-5, wherein both of the boxes (2) are slidable along the slide (11);

locking mechanical system includes locking seat (42) and locates each locking piece (41) of box (2), locking seat (42) are located chassis (1), locking piece (41) are equipped with first locking structure, locking seat (42) be equipped with each second locking structure of first locking structure looks adaptation.

8. A wagon as claimed in claim 7, wherein the locking seat (42) comprises a base (421) arranged on the underframe (1) and a locking handle arranged on the base (421), the second locking structure is arranged at each of two ends of the locking handle, and the locking handle can rotate relative to the base (421) and drive the second locking structure to engage with or disengage from the first locking structure.

9. A wagon according to claim 8, wherein the lock handle comprises a rotating shaft (422) and an actuating block (423), the lock handle is capable of rotating around an axis of the rotating shaft (422) relative to the base (421), the actuating block (423) is arranged on a side wall of the rotating shaft (422), and when the actuating block (423) is located below the rotating shaft (422), the first locking structure and the second locking structure are engaged.

10. A wagon according to claim 9, wherein the pivot (422) is parallel to the slideway (11), and one of the first and second locking structures is provided with a C-shaped groove (43) and the other is provided with a T-shaped block or L-shaped block (44), and an open end face of the C-shaped groove is perpendicular to the slideway (11).

11. A wagon according to claim 7, wherein an end face of the box (2) facing the other box (2) is adapted to abut the seat (421) when the first and second locking structures are engaged.

12. A wagon compartment according to any one of claims 1-5, wherein the chassis (1) is further provided with a stop (6) for limiting the sliding movement of the box (2).

13. A wagon compartment according to any one of claims 1-5, wherein the number of the slideways (11) is two and is provided on each side of the underframe (1);

at least two guide pieces (21) arranged at intervals are respectively arranged on two sides of the bottom of the box body (2) sliding along the slide way (11), and each guide piece (21) comprises a guide wheel (211) capable of rolling along the slide way (11).

14. A wagon according to claim 13, wherein each guide member (21) is provided with three guide wheels (211), one guide wheel (211) of the three guide wheels (211) being rollable along a top wall of the rail, one guide wheel (211) being rollable along a bottom wall of the rail, and one guide wheel (211) being rollable along a side wall of the rail.

15. A truck comprising a body of a truck as claimed in any one of claims 1 to 14.

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