CN111456559A - Automatic opening and closing mechanism for container door of container - Google Patents

Abstract

The invention discloses an automatic opening and closing mechanism for a container door of a container, which comprises a turning bracket, a lifting bracket and a locking mechanism, wherein the turning bracket is arranged on one side of the container door; the rod body is rotationally connected with the overturning bracket and is provided with a sliding block component in a sliding manner; the magnetic device is arranged on the sliding assembly and is magnetically adsorbed with the box door; the telescopic assembly is arranged on the push rod and is provided with a plurality of hooks for pulling the handle of the box door; and the driving piece is used for driving the push rod to swing. According to the invention, the telescopic component controls the hook to pull the handle, the lock rod is rotated to unlock, the driving piece controls the push rod to swing, the sliding block component moves on the push rod, the magnetic device adsorbs the box door to drive the box door to open or close, the automatic opening and closing of the box door are realized, the operation safety is improved, and the opening angle of the box door can be flexibly adjusted by controlling the driving piece.

Description

Automatic opening and closing mechanism for container door of container

Technical Field

The invention relates to the technical field of container equipment, in particular to an automatic opening and closing mechanism for a container door of a container.

Background

The container is used for bulk cargo transportation, can quickly and efficiently transport bulk cargo or cargo with larger liquidity, and is widely applied to the transportation of the cargos such as grains, coal, chemical raw materials, building materials, garbage, food and the like at present. In order to realize loading and unloading of bulk cargo of the container more quickly, a user can use the container overturning platform to overturn the container, an operator needs to ascend a height to rotate a handle of a container door lock rod, the container door is opened, and after loading, the operator needs to ascend the height again to close the container door. Rotate handle locking chamber door, operational safety is low, there is the potential safety hazard, when unloading, the goods in the container flows out fast and the power of dumping that the door received also leads to operating personnel is injured easily, current container upset platform has mostly only set up the chamber door opening device, can open the chamber door locking lever, nevertheless still can't realize that the chamber door is closed, degree of automation is low, especially the incasement is equipped with under the material produces the condition of lateral pressure to the door, the position of uncontrollable container door, the structure of container and size standardization also lead to being difficult to install special door opener additional on the chamber door, and, the handling in-process of bulk cargo can have a large amount of dusts to fly upward, lack and shelter from, the protection, lead to the operation site environment abominable.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, and provides an automatic opening and closing mechanism for a container door, which can automatically open and close the container door and improve the operation safety.

The automatic opening and closing mechanism for the container door of the container comprises a turning support, wherein the turning support is arranged on one side of the container door; the push rod body is rotationally connected with the overturning bracket, and a sliding block assembly is arranged on the push rod in a sliding manner; the magnetic device is arranged on the sliding assembly and is magnetically adsorbed with the box door; the telescopic component is arranged on the push rod and is provided with a plurality of hooks for pulling the door handle; and the driving piece is used for driving the push rod to swing.

The automatic door opening and closing mechanism of the container according to the embodiment of the invention at least has the following technical effects: the door handle is connected with the door handle through the hook, the magnetic device adsorbs the door, the telescopic assembly controls the hook to pull the handle, the lock rod on the door is rotated to unlock, the push rod is controlled by the driving piece to swing by taking the overturning support as a fulcrum, the sliding block assembly moves on the push rod, and under the adsorption effect of the magnetic device, the door is driven to be opened or closed, the automatic switch of the door is realized, the automation of bulk cargo loading and unloading operation is realized, the operation safety is improved, and the door opening angle can be flexibly adjusted by controlling the swinging angle of the push rod through the driving piece.

According to some embodiments of the invention, the sliding block assembly comprises sliding plates which are arranged symmetrically up and down, a plurality of main rollers are arranged between the sliding plates, a sliding groove is arranged on the push rod, and the main rollers move in the sliding groove. Through the main roller at the spout internal motion, the slider component moves on the push rod to opening or closing of control chamber door, opening the chamber door in-process, the slider removes towards being close to upset support direction, closes the chamber door in-process, and the slider removes towards leaving upset support direction, and adopts rolling friction, reduces frictional force, is favorable to the slider component to remove smoothly, and chamber door angle modulation is smooth and easy.

According to some embodiments of the invention, the sliding plate is provided with a side plate, the side plate is provided with a plurality of side rollers, the push rod is provided with a guide rail, and the side rollers move on the guide rail. The side rollers move on the guide rail, so that the sliding block assembly is prevented from displacing in the direction perpendicular to the sliding groove, the sliding block assembly is guaranteed to move directionally in the sliding groove, and the sliding block assembly is reliable in work.

According to some embodiments of the present invention, the magnetic device comprises a magnetic block, wherein a connecting member penetrating through the slider assembly is disposed on the magnetic block, a position-limiting sleeve and a buffer spring are sleeved on the connecting member, and the position-limiting sleeve and the buffer spring are disposed on two sides of the slider assembly respectively. Magnetic force piece adsorbs the chamber door, and the chamber door is closed the in-process, and slider assembly passes through the magnetic force piece and applys thrust to the chamber door, installs on the connecting piece that the cover was equipped with the stop collar through buffer spring, and stop collar and connecting piece cooperation location buffer spring's position, buffer spring directional compression provide the buffering space, avoid the chamber door to receive magnetic force piece thrust and produce deformation, protection container outward appearance.

According to some embodiments of the invention, the telescopic assembly comprises a rotating rod hydraulic cylinder and a transmission plate connected with the rotating rod hydraulic cylinder, and the plurality of hooks are arranged on the transmission plate. The transmission plate is controlled to move through the rotating rod hydraulic cylinder, so that the hook is controlled to move, the hook is controlled to be close to the handle during use, connection is facilitated, and after the hook is used, the hook is controlled to be separated from the handle and retracted.

According to some embodiments of the present invention, a push plate is disposed on the slider assembly, and a buffer rubber contacting the door is disposed on the push plate. In the process of closing the door, thrust is exerted to the door through the push pedal, increases the area of contact of push rod and door, effectively improves the transmission efficiency of power, guarantees the transmission of power, through cushion rubber and door contact, avoids the door and the direct rigid contact of push pedal and produces deformation, protection container outward appearance.

According to some embodiments of the invention, the magnetic block is provided with a handle for controlling the on-off of the magnetic field. The magnetic block is controlled to be opened and closed through the handle, during use, the magnetic field is started, the magnetic block is controlled to adsorb the box door, after the magnetic block is used, the magnetic field is closed, the magnetic block is separated from the box door easily, and the control is convenient and accurate.

According to some embodiments of the invention, the push rod is provided with a support rotatably connected with the turning bracket. The push rod is hinged with the turnover support through the support, the push rod can swing by taking the turnover support as a pivot, the structure is simple, and the connection is reliable.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an assembly structure of an automatic door opening and closing mechanism according to an embodiment of the present invention;

FIG. 2 is a top plan view of the automatic opening and closing mechanism shown in FIG. 1;

FIG. 3 is a schematic view of the magnetic device shown in FIG. 1;

FIG. 4 is a schematic view of an assembled structure of the magnetic device and the push rod shown in FIG. 1;

FIG. 5 is a schematic view of the telescoping assembly shown in FIG. 1;

fig. 6 is a schematic view of the telescoping assembly shown in fig. 1 coupled to a handle.

Reference numerals:

a door 100, a first lock bar 110, a first handle 111, a second lock bar 120, a second handle 121, a through hole 130,

A turning bracket 200, a driving oil cylinder 210, a piston rod 220,

A push rod 300, a chute 310, a support 320, a guide rail 330,

The slider assembly 400, the slider 410, the main roller 420, the side plates 430, the side rollers 440, the link plate 460, the mounting bracket 470, the fixing bracket 480, the slider assembly,

The magnetic block 500, the connecting piece 510, the limiting sleeve 520, the buffer spring 530, the handle 540, the first push plate 550, the second push plate 560, the buffer rubber 570,

The telescopic assembly 600, the rotating rod hydraulic cylinder 610, the transmission plate 620, the first hook 621, the second hook 622, the connecting rod 623, the limit plate 630 and the induction limit switch 640.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

An automatic opening and closing mechanism for a door of a container according to an embodiment of the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1 and 2, according to the automatic opening and closing mechanism for a door of a container in an embodiment of the present invention, a turning bracket 200 is disposed at one side of the door 100, a push rod 300 and a driving member for driving the push rod 300 to swing are disposed on the turning bracket 200, a slider assembly 400 is slidably disposed on the push rod 300, a magnetic device is disposed on the slider assembly 400, the magnetic device includes a plurality of magnetic blocks 500 for adsorbing the door 100, a telescopic assembly 600 is disposed on the push rod 300, and a plurality of hooks for pulling a handle of the door are disposed on the telescopic assembly 600. It can be understood that, during the use, magnetic device adsorbs chamber door 100, fix on chamber door 100, adjust flexible subassembly 600 position, the couple is connected with the handle on the locking lever, overturn the container to the assigned position when the upset platform, flexible subassembly 600 stretches out and control handle action, thereby rotate the locking lever unblock, driving piece control push rod 300 uses upset support 200 as the pivot swing, slider subassembly 400 moves on push rod 300, under the adsorption of magnetic force piece 500, open chamber door 100, and can control the swing angle of push rod 300 through the driving piece, with the opening angle of control chamber door 100, the shipment finishes, control push rod 300 swings in order to close chamber door 100, flexible subassembly 600 retracts and relocks the locking lever through the handle, the roll-over stand overturns the container to the initial position can. In the loading and unloading process, chamber door 100 is automatic to be opened and closed, and degree of automation is high, need not that operating personnel ascends a height and closes the door, improves the operation security to can open the angle through driving piece control chamber door 100, effectively shelter from the dust that bulk cargo produced, keep the operation environment clean.

Further, a handle 540 for controlling the on/off of the magnetic field is disposed on the magnetic block 500. During the use, turning handle 540 starts magnetic field, and magnetic block 500 adsorbs to be fixed on chamber door 100, adsorbs the fastening reliable, and loading and unloading finishes the back, closes magnetic field, and magnetic block 500 demagnetization easily separates with chamber door 100, and control is convenient accurate.

It should be noted that, since the container has two doors 100 symmetrically disposed, the driving member, the push rod 300, the magnetic device and the retractable assembly are all symmetrically disposed.

In some embodiments of the present invention, the driving member is configured as a driving cylinder 210, and a piston rod 220 is connected between the driving cylinder 210 and the push rod 300. Further, the push rod 300 is provided with a support 320 movably connected with the turning bracket 200. In the loading and unloading process, under the unlocking state of the lock rod, the driving oil cylinder 210 controls the piston rod 220 to retract, the push rod 300 swings by taking the overturning bracket 200 as a fulcrum and drives the box door 100 to open, the piston rod 220 extends out, and the push rod 300 swings and drives the box door 100 to close, so that the structure is simple and the control is accurate.

As shown in fig. 3, in some embodiments of the present invention, the magnetic device includes a magnetic block 500, a connecting member 510 penetrating through the slider assembly 400 is disposed on the magnetic block 500, a position-limiting sleeve 520 and a buffer spring 530 are sleeved on the connecting member 510, and the position-limiting sleeve 520 and the buffer spring 530 are disposed on two sides of the slider assembly 400 respectively. Specifically, two magnetic blocks 500 are provided, and are respectively provided at two ends of the slider assembly 400, it should be noted that the number of the magnetic blocks 500 may also be one, three, or four, etc., and is not limited to two, and is provided according to actual production requirements.

It can be understood that, during the closing process of the door 100, the push rod 300 pushes the magnetic block 500 through the slider assembly 400, the magnetic block 500 applies a pushing force to the door 100, the stop collar 520 and the connecting member 510 cooperate to position the buffer spring 530, the buffer spring 530 is forced to compress directionally, the pushing force is buffered, the door 100 is prevented from being deformed by the pushing force of the magnetic block 500, and the appearance of the container is protected.

As shown in fig. 4, in some embodiments of the present invention, the slider assembly 400 includes sliding plates 410 symmetrically disposed up and down, a plurality of main rollers 420 are disposed between the sliding plates 410, a sliding slot 310 is disposed on the push rod 300, and the main rollers 420 move in the sliding slot 310, and further, a side plate 430 is disposed on the sliding plate 410, a plurality of side rollers 440 are disposed on the side plate 430, a guide rail 330 is disposed on the push rod 300, and the side rollers 440 move on the guide rail 330. When the push rod 300 moves, the main roller 420 moves in the sliding groove 310, the side rollers 440 are located at two sides of the guide rail 330 and move on the guide rail 330, rolling friction is adopted, friction force between the slider assembly 400 and the push rod 300 is reduced, smooth movement is guaranteed, displacement of the slider assembly 400 in a direction perpendicular to the sliding groove 310 is avoided under the guiding and positioning effects of the guide rail 330, directional movement of the slider assembly 400 in the sliding groove 310 is guaranteed, and the operation is reliable.

In some embodiments of the present invention, a push plate is provided on the slider assembly 400, and a buffer rubber 570 contacting the door 100 is provided on the push plate. It can be understood that, in the process of closing the door 100, the push rod 300 pushes the magnetic block 500 through the slider assembly 400, thereby applying a pushing force to the door 100, increasing the push plate, increasing the contact area of the door 100, effectively improving the transmission efficiency of the force, ensuring reliable transmission of the force, and avoiding the door 100 from deforming due to direct rigid contact with the push plate by the contact of the buffer rubber 570 with the door 100 through the push plate, thereby protecting the appearance of the container.

Specifically, the push pedal is provided with two, including first push pedal 550 and second push pedal 560, first push pedal 550 is installed between two magnetic block 500, second push pedal 560 is installed in first push pedal 550 below, and with be connected with mounting bracket 470 between first push pedal 550, mounting bracket 470 is the T type, magnetic block 500 wears to establish the horizontal segment both ends at mounting bracket 470 through connecting piece 510, be provided with the connecting plate 460 of being connected with sliding block assembly 400 on the vertical section of mounting bracket 470, moreover, the steam generator is simple in structure, and is compact, make sliding block assembly 400 and magnetic means, the transmission is reliable between the push pedal.

As shown in fig. 5 and 6, in some embodiments of the present invention, the telescopic assembly 600 includes a turn bar hydraulic cylinder 610, and a driving plate 620 connected to the turn bar hydraulic cylinder 610, and the hook is provided on the driving plate 620. Further, the handle is provided with a through hole 130, and the hook is fastened with the through hole 130.

Specifically, the rotating rod hydraulic cylinder 610 is installed on a fixed frame 480 connected with a mounting frame 470, two induction limit switches 640 are symmetrically arranged on the rotating rod hydraulic cylinder 610, a limit plate 630 is connected with a transmission plate 620, the limit plate 630 is positioned between the two induction limit switches 640, a plurality of hooks connected with a lock rod handle are arranged on the transmission plate 620, two hooks are arranged, the two hooks comprise a first hook 621 and a second hook 622, a connecting rod 623 is connected between the second hook 622 and the transmission plate 620, correspondingly, two lock rods are arranged on each door 100, namely a first lock rod 110 and a second lock rod 120, a first handle 111 is arranged on the first lock rod 110, a second handle 121 is arranged on the second lock rod 120, the first handle 111 and the second handle 121 are both provided with through holes 130, a first hook 621 is buckled with the first handle 111 through the through holes 130, and a second hook 622 is buckled with the second handle 121 through the through holes 130.

It can be understood that, the rotating rod hydraulic cylinder 610 controls the transmission plate 620 to move and approach to the lock rod, after the first hook 621 is fastened with the first handle 111, the connecting rod 623 is adjusted, the second hook 622 is fastened with the second handle 121, after the connection, the transmission plate 620 is controlled to extend or retract through the rotating rod hydraulic cylinder 610, the lock rod is unlocked or locked in a rotating mode, the box door 100 is unlocked and locked automatically, after the use is finished, the first hook 621 and the second hook 622 are respectively separated from the first handle 111 and the second handle 121, the rotating rod hydraulic cylinder 610 controls the transmission plate 620 to retract and store, the automation degree is high, and the work is reliable. At bull stick pneumatic cylinder 610 control driving plate 620 removal in-process, response limit switch 640 real-time detection limiting plate 630's position to learn driving plate 620's position, limit driving plate 620 moving range avoids driving plate 620 to deviate from, guarantees reliable operation.

An automatic opening and closing mechanism for a door of a container according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 6 as one embodiment. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.

The automatic opening and closing mechanism for the door of the container according to the embodiment of the present invention comprises door 100 symmetrically disposed on the container, each door 100 is provided with a first lock bar 110 and a second lock bar 120, the first lock bar 110 is provided with a first handle 111, the second lock bar 120 is provided with a second handle 121, both the first handle 111 and the second handle 121 are provided with through holes 130, both sides of the door 100 are provided with a turning bracket 200, the turning bracket 200 is provided with a driving cylinder 210, the driving cylinder 210 is connected with one end of a push rod 300 through a piston rod 220, the push rod 300 is provided with a support 320 hinged with the turning bracket 200, the other end of the push rod 300 is provided with a slider assembly 400 and a sliding chute 310, the slider assembly 400 comprises sliding plates 410 symmetrically disposed up and down, a plurality of main rollers 420 are disposed between the sliding plates 410, the main rollers 420 move in the sliding chute 310, one side of the sliding plate 410 is provided with a side, the push rod 300 is provided with a guide rail 330 positioned outside the sliding groove 310, the side rollers 440 are respectively arranged at the upper side and the lower side of the guide rail 330 and move on the guide rail 330, the sliding plate 410 positioned above is connected with a connecting plate 460, the connecting plate 460 is provided with a T-shaped mounting frame 470, both ends of the horizontal section of the mounting frame 470 are respectively provided with a magnetic block 500, the magnetic block 500 is provided with a connecting piece 510 penetrating through the mounting frame 470, the connecting piece 510 is sleeved with a limiting sleeve 520 and a buffer spring 530, the limiting sleeve 520 and the buffer spring 530 are respectively arranged at both sides of the mounting frame 470, the bottom of the magnetic block 500 is provided with a handle 540, the vertical section of the mounting frame 470 is provided with a first push plate 550 and a second push plate 560, the first push plate 550 is arranged between the two magnetic blocks 500, the first push plate 550 and the second push plate 560 are both provided with buffer rubbers 570, the mounting, and the driving plate 620 is connected with the rotating rod hydraulic cylinder 610, the sensing limit switches 640 are symmetrically arranged on the rotating rod hydraulic cylinder 610, the limiting plate 630 is connected on the driving plate 620, the limiting plate 630 is located between the two sensing limit switches 640, the driving plate 620 is provided with a first hook 621 and a second hook 622, a connecting rod 623 is arranged between the second hook 622 and the driving plate 620, the first hook 621 is connected with the first handle 111 through a through hole 130, and the second hook 622 is connected with the second handle 121 through a through hole 130.

When in use, a container is placed in the overturning bracket 200, the driving oil cylinder 210 drives the piston rod 220 to extend, the push rod 300 is close to the box door 100 until the magnetic block 500 is contacted with the box door 100 and the buffer spring 530 is not deformed, the handle 540 is rotated to start the magnetic field, the magnetic block 500 fastens and adsorbs the box door 100, the driving oil cylinder 210 drives the piston rod 220 to retract and reset, the rotating rod hydraulic cylinder 610 controls the driving plate 620 to move, so that the first hook 621 is buckled with the first handle 111, the adjusting connecting rod 623 is buckled with the second hook 622 and the second handle 121, the two symmetrically arranged box doors 100 are connected with the push rod 300 according to the steps, after the connection is completed, the overturning bracket 200 is started to overturn the container to a specified position, the rotating rod hydraulic cylinder 610 controls the driving plate 620 to extend to drive the first handle 111 and the second handle 121 to act, the first lock rod 110 and the second lock rod 120 are rotationally unlocked, the driving oil cylinder 210 controls the piston rod 220 to contract, the push rod 300 swings, the sliding block assembly 400 moves in the sliding groove 310 to drive the box door 100 to open, the opening angle of the box door 100 can be adjusted as required, after loading and unloading are completed, the driving oil cylinder 210 controls the piston rod 220 to stretch out and reset to drive the box door 100 to close, the rotating rod hydraulic cylinder 610 controls the transmission plate 620 to retract, the first locking rod 110 and the second locking rod 120 are rotationally locked, and finally, the overturning support 200 is controlled to restore the container to the initial position.

According to the automatic opening and closing mechanism for the container door of the container of the embodiment of the invention, through the arrangement, at least the following effects can be achieved, the magnetic block 500 is connected with the handle, the magnetic block 500 adsorbs the container door 100, the telescopic assembly 600 controls the hook to pull the handle, the lock rod is rotated to unlock, the push rod 300 is controlled to swing by the driving piece with the overturning bracket 200 as a fulcrum, the slide block assembly 400 moves on the push rod 300, the container door 100 is driven to open or close under the adsorption action of the magnetic block 500, the automatic opening and closing of the container door 100 is realized, the automation of bulk cargo loading and unloading operation is realized, the loading and unloading efficiency and the operation safety are improved, the cost and the labor are saved, the swing angle of the push rod 300 can be controlled to adjust the opening angle of the container door 100, the dust is effectively shielded, the operation environment is kept clean, and the first hook 621 and the second hook, a connecting rod 623 is arranged between the second hook 622 and the transmission plate 620, and the first handle 111 and the second handle 121 do asynchronous motion, so that the problem that the rotation center of the box door 100 is not overlapped with the rotation center of the lock rod is solved, and the automatic unlocking of the box door 100 is realized.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (8)

1. An automatic door opening and closing mechanism for a container, comprising:

the overturning bracket is arranged on one side of the box door;

the rod body is rotationally connected with the overturning bracket and is provided with a sliding block component in a sliding manner;

the magnetic device is arranged on the sliding assembly and is magnetically adsorbed with the box door;

the telescopic assembly is arranged on the push rod and is provided with a plurality of hooks for pulling the handle of the box door;

and the driving piece is used for driving the push rod to swing.

2. The automatic door opening and closing mechanism for a container according to claim 1, wherein: the sliding block assembly comprises sliding plates which are arranged symmetrically up and down, a plurality of main rollers are arranged between the sliding plates, a sliding groove is formed in the push rod, and the main rollers move in the sliding groove.

3. The automatic door opening and closing mechanism for a container according to claim 2, wherein: the sliding plate is provided with a side plate, the side plate is provided with a plurality of side rollers, the push rod is provided with a guide rail, and the side rollers move on the guide rail.

4. The automatic door opening and closing mechanism for a container according to claim 1, wherein: the magnetic device comprises a magnetic block, a connecting piece penetrating through the sliding block assembly is arranged on the magnetic block, a limiting sleeve and a buffer spring are sleeved on the connecting piece, and the limiting sleeve and the buffer spring are respectively arranged on two sides of the sliding block assembly.

5. The automatic door opening and closing mechanism for a container according to claim 1, wherein: the telescopic assembly comprises a rotating rod hydraulic cylinder and a transmission plate connected with the rotating rod hydraulic cylinder, and the hook is arranged on the transmission plate.

6. The automatic door opening and closing mechanism for a container according to claim 1, wherein: the sliding block component is provided with a push plate, and the push plate is provided with buffer rubber which is in contact with the box door.

7. The automatic door opening and closing mechanism for a container according to claim 1, wherein: and a handle for controlling the on-off of the magnetic field is arranged on the magnetic block.

8. The automatic door opening and closing mechanism for a container according to claim 1, wherein: and the push rod is provided with a support which is rotationally connected with the overturning bracket.

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