阅读说明：本技术 一种挂车自动箱门及含有该箱门的挂车 (Automatic chamber door of trailer and contain trailer of this chamber door ) 是由 罗公祥 齐二伟 王兵 尹永涛 王贞伟 于 2021-01-16 设计创作，主要内容包括：一种挂车自动箱门及含有该箱门的挂车,挂车自动箱门包括双向液压油缸(1)、翻转装置(2)、箱门本体(3)；所述翻转装置(2)的A部(23)与所述箱门本体(3)固定连接,B部(21)与车身货箱边框(10)上部铰接,C部(22)与所述双向液压油缸(1)的上部通过销轴连接；本发明还提供一种含有该箱门的挂车。本发明的有益效果,用遥控器控制箱门开启、关闭、锁紧、举升,货箱箱门智能的自动打开或者关闭并锁紧,相比较于现有人工或半自动门,不需要人工开锁,因此卸货效率更高,更安全,而且车门开启角度大,能够有效防止货物将门碰变形。(An automatic trailer box door and a trailer comprising the same are provided, wherein the automatic trailer box door comprises a bidirectional hydraulic oil cylinder (1), a turnover device (2) and a box door body (3); the part A (23) of the turnover device (2) is fixedly connected with the box door body (3), the part B (21) is hinged with the upper part of a box frame (10) of the vehicle body, and the part C (22) is connected with the upper part of the bidirectional hydraulic oil cylinder (1) through a pin shaft; the invention also provides a trailer comprising the box door. The intelligent automatic door opening and closing device has the advantages that the door opening, closing, locking and lifting are controlled by the remote controller, the container door is intelligently and automatically opened or closed and locked, compared with the existing manual or semi-automatic door, the intelligent automatic door opening device does not need manual unlocking, so that the unloading efficiency is higher, the door opening is safer, the door opening angle is large, and the door collision deformation caused by goods can be effectively prevented.)

1. An automatic box door of a trailer is characterized by comprising a bidirectional hydraulic oil cylinder (1), a turnover device (2) and a box door body (3); a part (23) of the turnover device (2) is fixedly connected with the box door body (3), a part B (21) is hinged with the upper part of a box frame (10) of the vehicle body, and a part C (22) is connected with the upper part of the bidirectional hydraulic oil cylinder (1) through a pin shaft.

2. The automatic trailer door as claimed in claim 1, characterized by further comprising a lock rod support arm (8), wherein the part A (82) of the lock rod support arm (8) is connected with the lower part of the bidirectional hydraulic oil cylinder (1) through a pin shaft, and the part B (83) is fixedly connected with the lock rod (5).

3. The automatic trailer door as claimed in claim 2, characterized in that the locking lever (5) is provided with an olecranon hook (6).

4. The automatic trailer door as claimed in claim 1, wherein a locking ring (4) is arranged on the bottom edge of the door body (3) and corresponds to the position of the olecranon hook (6) on the locking rod (5) when the door body (3) is closed onto the vehicle body cargo box frame (10).

5. The automatic box door of a trailer according to claim 1, characterized in that said two-way hydraulic cylinder (1) is two, symmetrically arranged on two borders of the body box, and correspondingly said two tilting means (2) are connected by a connecting rod.

6. The automatic door of a trailer according to claim 1, characterized in that a lower limit block (7) and an upper limit block (9) are fixedly arranged at the lower part of a container frame (10) of the trailer body and near the locking rod arm (8).

7. The trailer robot door as claimed in claim 1, characterised in that the locking lever arm (8) is connected to the body by means of a pivot.

8. A trailer robot door as claimed in claim 1, characterised in that the locking bar (5) is supported on a body box bottom cross member (11) by means of pin holes.

9. Trailer, the container of which comprises a trailer robot door according to any one of the preceding claims, the door body (3) of which is connected to the body container border by means of the tilting device (2).

Technical Field

The invention relates to the field of trailers, in particular to a box door of a trailer turnover container or a self-discharging container and a trailer with the box door.

Background

The upper part of the car door is hinged with the car, the lower locking mechanism is manually opened when the door is opened, then the door is lifted through the lifting mechanism, the door falls back through the lifting mechanism when the door is closed, and then the locking mechanism is manually operated to close the door. Or the lower part of the carriage door is hinged with the carriage, and the upper locking mechanism is manually opened when the door is opened. The existing trailer container is opened or closed by adopting a manual or semi-automatic mode for a container door, is unsafe during unloading, and is easy to deform the container door.

Disclosure of Invention

The invention aims to provide a container door of a trailer turnover container or a self-discharging container and the trailer comprising the container door.

The invention provides an automatic box door of a trailer, which adopts the technical scheme that:

an automatic box door of a trailer comprises a bidirectional hydraulic oil cylinder (1), a turnover device (2) and a box door body (3); a part (23) of the turnover device (2) is fixedly connected with the box door body (3), a part B (21) is hinged with the upper part of a box frame (10) of the vehicle body, and a part C (22) is connected with the upper part of the bidirectional hydraulic oil cylinder (1) through a pin shaft. A part (23) of the turnover device is connected with the box door body (3) in a welding mode, a lug plate arranged on a part B (21) of the turnover device is hinged to the upper portion of a frame (10) of a container of the automobile body through a rotating shaft, and an upper lifting lug used for installing a two-way hydraulic oil cylinder (1) is arranged on a part C (22) of the turnover device and connected with the upper portion of the two-way hydraulic oil cylinder (1) through a pin shaft. The turnover device (2) is hinged to the upper portion of the frame (10) of the vehicle body container through a rotating shaft, the turnover device (2) can drive the box door body (3) to rotate relative to the vehicle body under the action of the thrust of the two-way hydraulic oil cylinder (1), the box door body (3) rotates upwards relative to the vehicle body on the upper portion of the frame of the vehicle body container, and therefore the box door body (3) is opened and the box door is opened. When the two-way hydraulic oil cylinder (1) is contracted, the turnover device (2) drives the box door body (3) to rotate downwards relative to the vehicle body, so that the box door body (3) is closed to the frame of the vehicle body container, and the box door is closed. The bidirectional hydraulic oil cylinder (1) is controlled by a remote controller, and the bidirectional hydraulic oil cylinder (1) can be opened and retracted only by pressing the remote controller, so that the automatic opening and closing of the box door body (3) are realized, the automation of the box door is realized, and the automatic box door of the trailer can be obtained and can be used on an intelligent container and a common container. The packing box chamber door can intelligent automatic open or close and lock, compares in current manual work or semi-automatic door, does not need the manual work to unblank, therefore unloading efficiency is higher, and is safer, and door opening angle is big moreover, can prevent effectively that the goods from bumping the deformation with the door.

Furthermore, the automatic trailer door further comprises a lock rod support arm (8), wherein the part A (82) of the lock rod support arm (8) is connected with the lower part of the bidirectional hydraulic oil cylinder (1) through a pin shaft, and the part B (83) is fixedly connected with a lock rod (5).

Furthermore, an olecranon hook (6) is fixedly arranged on the lock rod (5) which is welded and connected with the part B (83) of the lock rod support arm (8).

Furthermore, a locking ring (4) is arranged on the bottom edge of the box door body (3), and when the box door body (3) is closed to the frame (10) of the container of the vehicle body, the position of the locking ring corresponds to that of the olecranon hook (6) on the locking rod (5).

Furthermore, the two-way hydraulic oil cylinders (1) are symmetrically arranged on two frames of the cargo box of the vehicle body, and correspondingly, the two turnover devices (2) are connected by a connecting rod.

Furthermore, a lower limiting block (7) and an upper limiting block (9) are fixedly arranged at the lower part of the frame (10) of the cargo box of the vehicle body and near the lock rod support arm (8).

Furthermore, the lock rod support arm (8) is connected with the vehicle body through a rotating shaft. The lock rod support arm (8) can be hinged with the vehicle body, is arranged at the lower part of the frame of the vehicle body container and can rotate relative to the vehicle body, and a hinged shaft is arranged on the frame of the vehicle body container. Thus, the lower limit block (7) and the upper limit block (9) can be replaced.

Furthermore, the lock rod (5) is supported on a bottom cross beam (11) of a cargo box of the vehicle body through a pin hole. The lock rod (5) is supported in a pin hole of a beam (11) at the bottom of the container of the vehicle body, so that the stress space is limited, and the lock rod support arm (8) can better drive the lock rod (5) to rotate.

A container of the trailer comprises the automatic trailer door, and a door body (3) of the automatic trailer door is connected with a frame of a container of a vehicle body through the turnover device (2).

Compared with the prior art, the method has the advantages that:

the container door of the intelligent double-door wing-span door can be intelligently and automatically opened or closed and locked, and can be realized only by pressing a remote controller, and the one-key double-door wing-span door can be used on an intelligent container. The remote controller is used for controlling the opening, closing, locking and lifting of the box door, the box door of the container is intelligently and automatically opened or closed and locked, and compared with the existing manual or semi-automatic door, the intelligent automatic door has the advantages that the manual unlocking is not needed, so that the unloading efficiency is higher, the safety is higher, the opening angle of the vehicle door is large, and the deformation of the cargo due to the collision of the door can be effectively prevented.

Drawings

FIG. 1 is a schematic perspective view of a door body in a closed state according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of the portions I and II in FIG. 1;

FIG. 3 is an enlarged view of the door body of the present embodiment of the invention corresponding to the first and second portions of FIG. 1 in an opened state;

FIG. 4 is a schematic perspective view of a fully opened door body according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of a turning device according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a door body according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a locking lever arm according to an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a locking lever according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of an olecranon hook according to an embodiment of the present invention;

FIG. 10 is a perspective view of a locking rod of an embodiment of the present invention supported within a bottom cross rail pin hole of a vehicle body cargo box.

The overturning device comprises a bidirectional hydraulic oil cylinder 1, a overturning device 2, a box door body 3, a locking ring 4, a locking rod 5, a eagle beak hook 6, a lower limiting block 7, a locking rod support arm 8, an upper limiting block 9, a body container frame 10, a part A of the overturning device 2 23, a part B of the overturning device 2 21, a part C of the overturning device 2 22, a part A of the locking rod support arm 8 82, a part B of the locking rod support arm 8 and a part B of the body container bottom beam 11.

Detailed Description

The present invention will be described in detail below with reference to embodiments and drawings, it being noted that the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit it in any way.

An automatic box door of a trailer, which is shown in figures 1, 5 and 6, comprises a bidirectional hydraulic oil cylinder (1), a turnover device (2) and a box door body (3); a part (23) of the turnover device (2) is fixedly connected with the box door body (3), a part B (21) is hinged with the upper part of a box frame (10) of the vehicle body, and a part C (22) is connected with the upper part of the bidirectional hydraulic oil cylinder (1) through a pin shaft. A part (23) of the turnover device is connected with the box door body (3) in a welding mode, a lug plate arranged on a part B (21) of the turnover device is hinged to the upper portion of a frame (10) of a container of the automobile body through a rotating shaft, and an upper lifting lug used for installing a two-way hydraulic oil cylinder (1) is arranged on a part C (22) of the turnover device and connected with the upper portion of the two-way hydraulic oil cylinder (1) through a pin shaft. The turnover device (2) is hinged to the upper portion of the frame (10) of the vehicle body container through a rotating shaft, the turnover device (2) can drive the box door body (3) to rotate relative to the vehicle body under the action of the thrust of the two-way hydraulic oil cylinder (1), the box door body (3) rotates upwards relative to the vehicle body on the upper portion of the frame of the vehicle body container, and therefore the box door body (3) is opened and the box door is opened. When the two-way hydraulic oil cylinder (1) is contracted, the turnover device (2) drives the box door body (3) to rotate downwards relative to the vehicle body, so that the box door body (3) is closed to the frame of the vehicle body container, and the box door is closed. The bidirectional hydraulic oil cylinder (1) is controlled by a remote controller, and the bidirectional hydraulic oil cylinder (1) can be opened and retracted only by pressing the remote controller, so that the automatic opening and closing of the box door body (3) are realized, the automation of the box door is realized, and the automatic box door of the trailer can be obtained and can be used on an intelligent container and a common container. The packing box chamber door can intelligent automatic open or close and lock, compares in current manual work or semi-automatic door, does not need the manual work to unblank, therefore unloading efficiency is higher, and is safer, and door opening angle is big moreover, can prevent effectively that the goods from bumping the deformation with the door.

On the basis of the above embodiment, another embodiment of the invention, as shown in fig. 1, 7 and 8, is an automatic trailer door, which further comprises a lock rod support arm (8), wherein a part a (82) of the lock rod support arm (8) is connected with the lower part of the bidirectional hydraulic oil cylinder (1) through a pin shaft, and a part B (83) is fixedly connected with a lock rod (5). If the lower part of the bidirectional hydraulic oil cylinder (1) is fixedly connected, the thrust of the bidirectional hydraulic oil cylinder is fully exerted. The lower part of the two-way hydraulic oil cylinder (1) is connected to the lock rod support arm (8) through a pin shaft, a part A (82) of the lock rod support arm (8) is provided with a lower lifting lug for installing the two-way hydraulic oil cylinder (1) and is connected with the lower part of the two-way hydraulic oil cylinder (1) through a pin shaft, and a part B (83) of the lock rod support arm (8) is connected with a lock rod (5) in a welding mode. The structure of the lock rod support arm (8) and the lock rod (5) are shown in figures 7 and 8. The locking rod support arm (8) is arranged at the lower part of the frame (10) of the vehicle body container and is flush with the bottom edge of the vehicle body container, and the locking rod (5) on the locking rod support arm (8) is arranged on the bottom edge of the vehicle body container. The lock rod support arm (8) is connected with the bidirectional hydraulic oil cylinder (1) through a pin shaft, so that the lock rod support arm (8) can drive the lock rod (5) to move under the action of the thrust of the bidirectional hydraulic oil cylinder. Under the condition that the lock rod (5) is restricted, such as the restriction of the bottom of a container of a vehicle body, the lock rod support arm (8) can drive the lock rod (5) to rotate relatively around the bidirectional hydraulic oil cylinder (1) under the thrust action of the bidirectional hydraulic oil cylinder.

On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 4, 8 and 9, an olecranon hook (6) is fixedly arranged on the lock rod (5) welded to the B portion (83) of the lock rod support arm (8). The structure of the olecranon hook (6) is shown in figure 9; the olecranon hook (6) is fixedly arranged on the lock rod (5), and the lock rod (5) can hook other devices in a relative rotation state.

On the basis of the above embodiment, in another embodiment of the invention, as shown in fig. 1, 4 and 6, a locking ring (4) is arranged on the bottom edge of the box door body (3), and when the box door body (3) is closed onto the body cargo box frame (10), the position of the locking ring corresponds to the position of the olecranon hook (6) on the locking rod (5). The structure of the box door body (3) is shown in figure 6. The lock ring (4) is fixed on the bottom edge of the box door body (3) and can also be a point above the bottom edge of the box door body (3). Under the condition that the two-way hydraulic oil cylinder (1) is contracted, after the box door body (3) is closed onto the frame (10) of the vehicle body container, the bottom of the box door body is attached to the bottom of the vehicle body container, and the locking ring (4) on the bottom edge of the box door body (3) is just corresponding to the position of the olecranon hook (6) on the locking rod (5). When the two-way hydraulic oil cylinder (1) contracts after the stroke is reset, the two-way hydraulic oil cylinder (1) drives the lock rod support arm (8) to rotate relatively, namely the lock rod (5) is driven to act, and after the lock rod reaches a certain position, the olecranon hook (6) on the lock rod (5) can hook the lock ring (4) on the bottom edge of the box door body (3) at the corresponding position due to the action. When the lock rod (5) is restricted in a space and contracts after the stroke of the two-way hydraulic oil cylinder (1) is reset, the two-way hydraulic oil cylinder (1) drives the lock rod support arm (8) to rotate relatively, namely, the lock rod (5) is driven to rotate, after a certain position is reached, the olecranon hook (6) on the lock rod (5) hooks the lock ring (4) on the bottom edge of the box door body (3) at the corresponding position due to rotation, and thus, the box door body (3) is locked. When the stroke of the bidirectional hydraulic oil cylinder (1) is opened, the thrust of the bidirectional hydraulic oil cylinder (1) firstly pushes the lock rod support arm (8) to rotate oppositely in the opposite direction, namely, the lock rod (5) is driven to rotate reversely, after a certain position is reached, the olecranon hook (6) on the lock rod (5) is unhooked from the lock ring (4) on the bottom edge of the box door body (3) in the corresponding position due to the reverse rotation, and thus, the box door body (3) is unhooked; the box door body (3) is driven by the turnover device (2) to rotate upwards relative to the vehicle body on the upper portion of the frame of the vehicle body container along with the continuous opening of the stroke of the two-way hydraulic oil cylinder (1), so that the box door body (3) is opened and the box door is opened.

On the basis of the above embodiment, according to another embodiment of the present invention, as shown in fig. 4 and 5, the two-way hydraulic cylinder (1) is two and is symmetrically arranged on two side frames of the cargo box of the vehicle body, and correspondingly, the two turnover devices (2) are connected by a connecting rod. The structure of the turnover device (2) is shown in figure 5. Therefore, the structure is symmetrical, the stress is balanced, and the box door body (3) can be opened in a balanced manner and landed in a balanced manner as shown in figure 4.

On the basis of the above embodiment, in another embodiment of the invention, as shown in fig. 1, 2 and 3, a lower limit block (7) and an upper limit block (9) are fixedly arranged at the lower part of the body box frame (10) and near the lock rod support arm (8). The lower limiting block (7) and the upper limiting block (9) are welded to the lower portion of a frame (10) of a container of the vehicle body, and the locking rod support arm (8) is close to the locking rod. After the lower limiting block (7) limits the bidirectional hydraulic oil cylinder (1) to be opened in the stroke, the whole oil cylinder rotates relative to the lock rod support arm (8), and the descending height can reach 3 cm; after the upper limiting block (9) limits the bidirectional hydraulic oil cylinder (1) to reset in the stroke, the whole oil cylinder rotates relative to the lock rod support arm (8), and the rising height can reach 1 cm. That is, as shown in fig. 2, when the two-way hydraulic oil cylinder (1) contracts after the stroke is reset, the two-way hydraulic oil cylinder (1) drives the lock rod support arm (8) to rotate relatively, namely, drives the lock rod (5) to rotate, and after the lock rod reaches the upper limiting block (9), the olecranon hook (6) on the lock rod (5) hooks the lock ring (4) on the bottom edge of the box door body (3) at the corresponding position due to rotation, so that the upper limiting block (9) controls to lock the lock ring (4); when the stroke of the bidirectional hydraulic oil cylinder (1) is opened, the thrust of the bidirectional hydraulic oil cylinder (1) firstly pushes the lock rod support arm (8) to relatively rotate in the opposite direction, namely, the lock rod (5) is driven to rotate in the opposite direction, after the lock rod reaches the lower limiting block (7), the olecranon hook (6) on the lock rod (5) is unhooked from the locking ring (4) on the bottom edge of the box door body (3) at the corresponding position due to the reverse rotation, and thus, the lower limiting block (7) controls the unlocking of the locking ring (4).

On the basis of the above embodiment, in another embodiment of the invention, the lock rod support arm (8) is connected with the vehicle body through a rotating shaft. The lock rod support arm (8) can be hinged with the vehicle body, is arranged at the lower part of the frame of the vehicle body container and can rotate relative to the vehicle body, and a hinged shaft is arranged on the frame of the vehicle body container. Thus, the lower limit block (7) and the upper limit block (9) can be replaced.

In another embodiment of the present invention, the lock rod (5) is supported by the body box bottom cross member (11) through a pin hole. Referring to fig. 10, the lock rod (5) is supported in a pin hole of a cross beam 11 at the bottom of a cargo box of a vehicle body, so that the stress space is limited, and the lock rod support arm (8) can better drive the lock rod (5) to rotate.

Another embodiment of the invention is an automatic trailer door, which is shown in fig. 1-9, and comprises two bidirectional hydraulic oil cylinders (1) and two turnover devices (2) which are connected by a connecting rod, a trailer door body (3) and a locking ring (4) on the bottom edge thereof, a locking rod support arm (8), a locking rod (5) fixedly connected with the locking rod support arm (8), and an olecranon hook (6) fixedly arranged on the locking rod (5). A part (23) of the turnover device (2) is fixedly connected with the box door body (3), a part B (21) is hinged with the upper part of a frame (10) of a container of a vehicle body, a part C (22) is connected with the upper parts of the two-way hydraulic oil cylinders (1) through pin shafts, the lower parts of the two-way hydraulic oil cylinders (1) are connected to the locking rod support arms (8) through pin shafts, and the two locking rod support arms (8) are fixedly connected to two ends of the locking rod (5). The lock rod (5) is restricted on a cross beam at the bottom edge of the container of the automobile body, the olecranon hook (6) on the lock rod (5) corresponds to the lock ring (4) at the bottom edge of the container door body (3), and when the container door body (3) is closed to the frame of the container of the automobile body, the olecranon hook (6) on the lock rod (5) can hook the lock ring (4) at the bottom edge of the container door body (3) through the rotation of the lock rod (5). This creates a symmetrical frame robot door, see fig. 4. The turnover device B part (21) is provided with an ear plate which is hinged with the upper part of a frame (10) of the vehicle body container through a rotating shaft, the turnover device (2) can drive the box door body (3) to rotate relative to the vehicle body under the action of the thrust of the two-way hydraulic oil cylinder (1), and the box door body (3) rotates upwards relative to the vehicle body on the frame upper part of the vehicle body container, so that the box door body (3) is opened, and the box door is opened, as shown in figure 4. When the two-way hydraulic oil cylinder (1) is contracted, the turnover device (2) drives the box door body (3) to rotate downwards relative to the vehicle body, so that the box door body (3) is closed to the frame of the vehicle body container, and the box door is closed, as shown in figure 1. The locking rod support arm (8) is arranged at the lower part of the frame (10) of the vehicle body container and is flush with the bottom edge of the vehicle body container, and the locking rod (5) on the locking rod support arm (8) is arranged on the bottom edge of the vehicle body container. The lock rod support arm (8) is connected with the bidirectional hydraulic oil cylinder (1) through a pin shaft, so that the lock rod support arm (8) can drive the lock rod (5) to rotate around the bidirectional hydraulic oil cylinder (1) relatively under the thrust action of the bidirectional hydraulic oil cylinder. Under the condition that the two-way hydraulic oil cylinder (1) is contracted, after the box door body (3) is closed onto the frame (10) of the vehicle body container, the bottom of the box door body is attached to the bottom of the vehicle body container, and the locking ring (4) on the bottom edge of the box door body (3) is just corresponding to the position of the olecranon hook (6) on the locking rod (5). And a lower limiting block (7) and an upper limiting block (9) are fixedly arranged at the lower part of the frame (10) of the cargo box of the vehicle body and near the lock rod support arm (8). Referring to fig. 2, when the two-way hydraulic oil cylinder (1) contracts after the stroke is reset, the two-way hydraulic oil cylinder (1) drives the lock rod support arm (8) to rotate relatively, namely, drives the lock rod (5) to rotate, and after the lock rod reaches the upper limiting block (9), the olecranon hook (6) on the lock rod (5) hooks the lock ring (4) on the bottom edge of the box door body (3) at the corresponding position due to rotation, so that the box door body (3) is locked; when the stroke of the two-way hydraulic oil cylinder (1) is opened, the thrust of the two-way hydraulic oil cylinder (1) firstly pushes the lock rod support arm (8) to rotate oppositely in the opposite direction, namely, the lock rod (5) is driven to rotate reversely, and after the lock rod reaches the lower limiting block (7), the olecranon hook (6) on the lock rod (5) is unhooked from the lock ring (4) on the bottom edge of the box door body (3) in the corresponding position due to the reverse rotation, so that the box door body (3) is unhooked; the box door body (3) is driven by the turnover device (2) to rotate upwards relative to the vehicle body on the upper portion of the frame of the vehicle body container along with the continuous opening of the stroke of the two-way hydraulic oil cylinder (1), so that the box door body (3) is opened and the box door is opened. The bidirectional hydraulic oil cylinder (1) is controlled by a remote controller, and the bidirectional hydraulic oil cylinder (1) can be opened and retracted only by pressing the remote controller, so that the automatic opening and closing of the box door body (3) are realized, the automation of the box door is realized, and the automatic box door of the trailer can be obtained and can be used on an intelligent container and a common container. The packing box chamber door can intelligent automatic open or close and lock, compares in current manual work or semi-automatic door, does not need the manual work to unblank, therefore unloading efficiency is higher, and is safer, and door opening angle is big moreover, can prevent effectively that the goods from bumping the deformation with the door.

According to one embodiment of the invention, a container of the trailer comprises the automatic trailer door, and a door body (3) of the automatic trailer door is connected with a frame of a container of a vehicle body through the turnover device (2).

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.