CN105084220B - A kind of double case synchronization handling systems of container - Google Patents

Abstract

The invention provides a dual-container synchronous loading and unloading system for containers, which belongs to the technical field of machinery. It solves the technical problems such as the interference between the operating space of the boom and the cable when the existing container crane is loading and unloading the container, and it is difficult for the boom of the container crane to extend above the container, resulting in troublesome unloading operations and low safety factor. The double-box synchronous loading and unloading system includes a frame, two jacking arms and two jacking arms one arranged on both sides of the two jacking arms. On the same side of the frame, there is a mobile bracket between the second lifting arm and each first lifting arm. The mobile bracket is slidably connected to the frame and can extend out of one side of the frame. The hoisting hole of the container is clamped, and the front end of the jacking arm 2 has two plug joints which are parallel to each other and arranged at intervals. The invention can simultaneously load and unload two containers, and the loading and unloading is more stable and safe.

Description

A double-box synchronous loading and unloading system for containers

technical field

The invention belongs to the technical field of machinery and relates to a double-box synchronous loading and unloading system for containers.

Background technique

Container, English name container. It refers to a large-scale loading container with certain strength, rigidity and specifications for turnover. Using containers to transship goods can be directly loaded in the consignor's warehouse and unloaded in the consignee's warehouse. When changing vehicles or ships midway, there is no need to take out the goods from the box for repacking. So the container is a great invention. The greatest success of the container lies in the standardization of its products and the entire transportation system established thereby. It is indeed worthy of the standardization of a behemoth with a load of tens of tons, and based on this, the gradual realization of a global logistics system for ships, ports, routes, highways, transfer stations, bridges, tunnels, and multimodal transport. It is called one of the great miracles created by human beings in history.

At present, the main loading and unloading method of containers is realized by container cranes. The container crane first extends its boom to the top of the container, then lifts the container through the boom, and then transfers it to the specified unloading area for laying down.

For example, the invention with the patent number DE202010001496U1 is loaded and unloaded in this way. However, since cables are installed above the train tracks, when a common container crane is used to load and unload containers, the operating space of the boom will interfere with the cables, and the boom of the container crane is difficult to reach above the container, resulting in The unloading operation is troublesome and the safety factor is low.

Contents of the invention

The present invention aims at the above-mentioned problems existing in the prior art, and provides a double container synchronous loading and unloading system. The technical problem to be solved by the present invention is: how to simultaneously load and unload two containers stably and safely.

The purpose of the present invention can be achieved through the following technical solutions:

A double-box synchronous loading and unloading system for containers. The double-box synchronous loading and unloading system includes a frame. The first jacking arm on the side, the two jacking arms one are set parallel to the second jacking arm and can extend out from the same side of the frame, and there is a mobile bracket between the second jacking arm and each jacking arm one, so The mobile bracket is slidably connected to the frame and can extend out of one side of the frame, and the two jacking arms can both be clamped with the hoisting holes of the container through translation. Drive source 1 on one side, said jacking arm 1 is provided with drive source 2 capable of driving jacking arm 1 to move up and down, said jacking arm 2 is provided with drive source 3 capable of driving jacking arm 2 to move up and down , the front end of the second jacking arm has two plug joints arranged parallel to each other and spaced apart.

Its working principle is as follows: In this dual-container synchronous loading and unloading system, the first two jacking arms can be engaged with the hoisting holes on the outside of the two containers, while the plug joints at the front ends of the second jacking arm are respectively connected to the hoisting holes on the inside of the two containers. The two containers are fixed to each other through the two parallel and spaced plug joints. The first lifting arm and the second lifting arm are driven by the driving source 2 and the driving source 3 to simultaneously lift the two containers. Jack up and suspend the bottom surface of the container; set a moving bracket between the first lifting arm and the second lifting arm, so that the moving bracket is inserted from the bottom of the container and the flat car under the drive of the driving source 1, and the two containers are placed separately On the corresponding mobile support, then retract the first lifting arm and the second lifting arm, and at the same time, the mobile support drives the container to move synchronously in translation under the drive of the driving source 1, and transports the container to the frame. The design of the mobile support realizes The transfer of the container flat car to the frame, and the transfer process will not interfere with the cables above the rails, the transfer process is more stable and safe; the two plug joints arranged in parallel and spaced apart at the two front ends of the jacking arm can connect the two containers Fixing each other improves the stability of the two containers during simultaneous lifting and transfer. The driving source one above can be a combination of a screw rod and a motor, or a hydraulic cylinder or an air cylinder.

In the above-mentioned double-container synchronous loading and unloading system for containers, the second lifting arm includes an upper arm and a lower arm, and the lower arm is slidably connected to the frame, and the frame is provided with a Sliding drive source four, the upper arm is stacked above the lower arm and the upper arm can move up and down relative to the lower arm, the front end of the upper arm is connected to a connecting plate, two plug joints are fixed on the connecting plate, the upper arm The front end is also hinged with a drive source three for driving the upper arm to move up and down. In this double-container synchronous loading and unloading system, the lower arm is slidably connected to the frame and the upper arm can move up and down relative to the lower arm to ensure that the height of the upper arm and the distance between the upper arm and the container are controllable. The plug joint at the front end of the upper arm can be more accurately snapped into the lifting hole on the container to realize the interlocking of the two containers, improving the stability and safety of synchronously lifting the two containers; the driving source 3 is located at the front end of the upper arm, The force transmission path between the drive source three and the container is shortened, thereby improving the structural strength of the upper arm, and making the double-container synchronous loading and unloading system more stable and safe. The above-mentioned driving source 4 can be a combination of a screw rod and a motor, or a hydraulic cylinder or an air cylinder.

In the above-mentioned double-container synchronous loading and unloading system for containers, the driving source three is a hydraulic cylinder one, and the front end of the upper arm has two mounting plates, and a relief cavity is formed between the two mounting plates, and the hydraulic cylinder one Located between two mounting plates and respectively hinged with the two mounting plates, the connecting plate is fixedly connected with the hydraulic cylinder, and the upper arm is provided with a driving mechanism that drives the hydraulic cylinder to rotate into the relief cavity. The hinged design of the relief chamber and the hydraulic cylinder one and the two mounting plates can make the hydraulic cylinder one rotate into the relief chamber, avoiding the container from being stuck by the hydraulic cylinder one during the process of moving from the flat car to the frame, so that The loading and unloading of containers is more stable and safe. As another solution, the drive source three may also be an air cylinder, or a combination of a screw rod and a motor.

In the above-mentioned dual-container synchronous loading and unloading system for containers, a second chute is provided on the frame along the length direction of the lower arm, the lower arm is slidably connected in the second chute, and the second chute Both ends are open, and the two ends of the lower arm extend to the two ends of the chute 2. The chute 2 has a smooth bottom wall and two opposite side walls, and the side walls have strip-shaped The protruding portion extends along the length direction of the chute, and the side wall of the lower arm is provided with a snap-in slot, and the protruding portion is slidably connected in the snap-in slot. The outer end has a lower guide surface. In order for the plug joint at the front end of the second jacking arm to engage with the hoisting hole of the container, the lower arm must extend out of the chute 2, but after the lower arm is stretched out, there must be a part of it hanging in the air, and this design ensures that the supporting length of the lower arm is longer Long, even in the case of a part suspended in the air, it still has a good supporting effect, which improves the stability and safety of the jacking mechanism; Cooperating with each other, it avoids the situation that the lower arm moves left and right or shakes up and down when sliding on the second chute, making the sliding of the lower arm more stable and safe; at the same time, due to the limitation of the lower arm, the upper arm only needs to adjust the height up and down to match the container Therefore, in order to strengthen the structural strength of the plug joint, only the lower guide surface is provided on the outer end of the plug joint, so that the second lifting arm can jack up the container more stably and safely.

In the above-mentioned double-box synchronous loading and unloading system for containers, the drive mechanism includes a V-shaped plate and hydraulic cylinder two, one end of the V-shaped plate is hinged to hydraulic cylinder one, and the V-shaped plate is connected to hydraulic cylinder one. The hinge point coincides with the hinge point of the hydraulic cylinder one and the mounting plate, the other end of the V-shaped plate is hinged with the piston rod of the hydraulic cylinder two, the front end of the mounting plate is provided with a limit block, and the limit block is located on the Above the V-shaped plate, the lower surface of the limiting block is a limiting surface. The hinge point of the V-shaped plate and hydraulic cylinder 1 coincides with the design of the hinge point of the hydraulic cylinder 1 and the mounting plate to make the V-shaped plate and hydraulic cylinder 1 rotate synchronously, and then drive the hydraulic cylinder 2 through the hydraulic cylinder 2 hinged with the V-shaped plate Rotate to make the hydraulic cylinder 2 rotate into the relief cavity, so that the transfer of the container by the mobile bracket is more stable and safe; the above-mentioned limit surface is parallel to the horizontal plane, and the design of the limit block can make the hydraulic cylinder 2 rotate from the relief cavity It is in a vertical state when it comes out, so that the second hydraulic cylinder can jack up two containers more stably and safely.

In the above-mentioned double-box synchronous loading and unloading system for containers, each of the jacking arms includes a moving beam and a jacking beam, the moving beam is slidably connected to the frame, and the jacking beam is stacked on the moving beam Above and the jacking beam can move up and down relative to the moving beam. The outer and inner ends of the jacking beam are provided with clamping arms, and the clamping arms are provided with a plug-in column and a drive source 2 for driving the clamping arm to move up and down. The moving beam of the above-mentioned jacking arm 1 is slidably connected to the frame, so as to realize the adjustment of the horizontal position of the jacking arm 1, and because the jacking beam is stacked on the top of the moving beam and can move up and down relative to the moving beam, the lifting arm is realized. -Adjustment in the vertical direction ensures that the plug-in column on the clamp arm can be accurately inserted into the hoisting hole of the container, so that the jacking arm can lift the container more safely; the drive used to drive the clamp arm to move up and down The source 2 is set on the jig arm, which shortens the force transmission path between the drive source 2 and the container when lifting the container, enhances the structural strength of the jacking arm 1, and improves the stability and safety of the double-box synchronous loading and unloading system sex. The above-mentioned drive source 2 can be a hydraulic cylinder or an air cylinder, or a combination of a motor and a screw.

In the above-mentioned double-box synchronous loading and unloading system for containers, the mobile support includes a guide rail frame and a transfer frame, the guide rail frame is slidably connected to the frame, the transfer frame is slidably connected to the guide rail frame, and the transfer The direction of movement of the frame and the rail frame is parallel. The design of the double-layer frame prevents one end of the frame from being suspended when the container is transferred, which improves the structural strength of the mobile frame and enhances the stability and safety of the dual-container synchronous loading and unloading system.

Compared with prior art, advantage of the present invention is as follows:

1. In this dual-container synchronous loading and unloading system, the first two jacking arms can be clamped with the lifting holes on the outside of the two containers, while the plug joints at the front ends of the second jacking arm are respectively clamped with the lifting holes on the inside of the two containers , and the two containers are fixed to each other through the two plug joints that are parallel to each other and arranged at intervals. The jacking arm 1 and the jacking arm 2 are driven by the driving source 2 and the driving source 3. The two containers can be simultaneously jacked up and Suspend the bottom of the container;

2. In this double-container synchronous loading and unloading system, a mobile support is set between the first lifting arm and the second lifting arm, so that the mobile support is inserted between the bottom of the container and the flat car under the drive of the first driving source, and the two containers are respectively placed on the On the corresponding mobile support, then withdraw the first lifting arm and the second lifting arm, and at the same time, the mobile support drives the container to move synchronously in translation under the drive of the driving source 1, and transports the container to the frame. The design of the mobile support realizes the container The transfer from the flat car to the rack, and the transfer process will not interfere with the cables above the rails, the transfer process is more stable and safe;

3. The two front ends of the lifting arm of the double-container synchronous loading and unloading system are parallel and spaced apart. The two plug joints can fix the two containers to each other, which improves the stability of the two containers in the process of synchronous lifting and transfer.

Description of drawings

Fig. 1 is the overall schematic diagram when the double-case synchronous loading and unloading system is transferred.

Figure 2 is a schematic diagram of the overall structure of the double-box synchronous loading and unloading system.

Fig. 3 is a structural schematic diagram of the second lifting arm of the double-box synchronous loading and unloading system.

Fig. 4 is a structural schematic diagram of the connecting plate and the plug connector of the double-box synchronous loading and unloading system.

Fig. 5 is a structural schematic diagram of the two front ends of the jacking arm of the double-box synchronous loading and unloading system.

Fig. 6 is a structural schematic diagram of the first lifting arm of the double-box synchronous loading and unloading system.

In the figure, 1 frame; 2 jacking arm 1; 3 jacking arm 2; 4 mobile bracket; 5 container; 6 hoisting hole; 7 drive source 1; 8 drive source 2; 9 drive source 3; Upper arm; 12 lower arm; 13 drive source four; 14 connecting plate; 15 mounting plate; 16 relief cavity; 17 chute two; Beam; 23 lifting beam; 24 clamp arm; 25 rail frame; 26 transfer frame; 27 hydraulic cylinder one.

detailed description

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 1-6, the double-box synchronous loading and unloading system includes a frame 1, a jacking arm 2 3 and two jacking arms 1 2 arranged on both sides of the jacking arm 2 3, and two jacking arms One and two are all arranged in parallel with the two jacking arms 3 and can stretch out from the same side of the frame 1. The one two jacking arms are provided with a driving source two 8 that can drive the one two jacking arms to move up and down. The first arm 2 includes a moving beam 22 and a jacking beam 23, the moving beam 22 is slidably connected to the frame 1, the jacking beam 23 is stacked above the moving beam 22 and the jacking beam 23 can move relative to the beam 22 Moving up and down, the outer end and the inner end of the jacking beam 23 are provided with a clamp arm 24, and the clamp arm 24 is provided with a plug post and a drive source 2 for driving the clamp arm 24 to move up and down. The moving beam 22 of the above-mentioned jacking arm-2 is slidably connected on the frame 1, thereby realizing the adjustment of the horizontal position of the jacking arm-2, and because the jacking beam 23 is stacked on the top of the moving beam 22 and can move up and down relative to the moving beam 22 Move, realize the vertical adjustment of jacking arm-2, ensure that the plug-in column on the clip arm 24 can be accurately inserted in the hoisting hole 6 of container 5, make jacking arm-2 can jack up more safely Container 5; the drive source 2 8 that is used to drive the clamp arm 24 to move up and down is arranged on the clamp arm 24, which shortens the power transmission path between the drive source 2 8 and the container 5 when lifting the container 5, and enhances the jacking The structural strength of the arm-2 improves the stability and safety of the double-box synchronous loading and unloading system. The above-mentioned driving source 2 8 can be a hydraulic cylinder or an air cylinder, and can also be a combination of a motor and a screw mandrel.

As shown in Figures 1 and 2, a mobile bracket 4 is provided between the jacking arm two 3 and each jacking arm one 2, and the mobile bracket 4 is slidably connected to the frame 1 and can extend out of the frame 1-1. On the side, the two jacking arms-2 can be clamped with the hoisting hole 6 of the container 5 through translation, and the frame 1 is provided with a drive source-7 that can drive the mobile bracket 4 to extend out of the frame 1 side, so Described mobile support 4 comprises guide rail frame 25 and transfer frame 26, and described guide rail frame 25 is slidably connected on the frame 1, and described transfer frame 26 is slidably connected on the guide rail frame 25, and the movement of described transfer frame 26 and guide rail frame 25 direction parallel. The design of the double-layer frame body makes one end of the frame body not suspended when the container 5 is transferred, which improves the structural strength of the mobile frame 4 and enhances the stability and safety of the double-box synchronous loading and unloading system. The above-mentioned drive source one 7 can be a combination of a screw rod and a motor, or a hydraulic cylinder or an air cylinder.

As shown in Fig. 3, Fig. 4 and Fig. 5, the jacking arm 2 3 includes an upper arm 11 and a lower arm 12, and the front end of the jacking arm 2 3 has two plug connectors 10 arranged parallel to each other and spaced apart. The lower arm 12 is slidably connected to the frame 1, the frame 1 is provided with a driving source 13 for driving the sliding of the lower arm 12, the upper arm 11 is stacked above the lower arm 12 and the upper arm 11 can be relatively The lower arm 12 moves up and down, the front end of the upper arm 11 is connected with a connecting plate 14, two plug joints 10 are fixed on the connecting plate 14, and the front end of the upper arm 11 is also hinged with a drive source for driving the upper arm 11 to move up and down Three 9. In this dual-container synchronous loading and unloading system, the design that the lower arm 12 is slidingly connected to the frame 1 and the upper arm 11 can move up and down relative to the lower arm 12 ensures that the height of the upper arm 11 and the distance between the upper arm 11 and the container 5 are controllable. Adjusting the height of the arm 12 and the upper arm 11 can make the plug joint 10 at the front end of the upper arm 11 more accurately engage with the hoisting hole 6 on the container 5, realize the interlocking of the two containers 5, and improve the efficiency of synchronously lifting the two containers 5. Stability and safety; the driving source 9 is set at the front end of the upper arm 11, which shortens the force transmission path between the driving source 9 and the container 5, thereby improving the structural strength of the upper arm 11 and making the double-box synchronous loading and unloading system more stable and safe. The above-mentioned drive source 13 can be a combination of a screw mandrel and a motor, and can also be a hydraulic cylinder or an air cylinder.

As shown in Figures 3 and 5, the jacking arm 2 3 is provided with a drive source 3 9 capable of driving the jacking arm 2 3 to move up and down, and the drive source 3 9 is a hydraulic cylinder 1 27, and the front end of the upper arm 11 There are two mounting plates 15, and a relief chamber 16 is formed between the two mounting plates 15. The hydraulic cylinder one 27 is located between the two mounting plates 15 and is hinged to the two mounting plates 15 respectively. The connecting plate 14 It is fixedly connected with the hydraulic cylinder 1 27 , and the upper arm 11 is provided with a driving mechanism that drives the hydraulic cylinder 1 27 to rotate into the relief cavity 16 . The design of the relief chamber 16 and the hydraulic cylinder 1 27 hinged with the two mounting plates 15 can make the hydraulic cylinder 1 27 rotate into the relief chamber 16, preventing the container 5 from being moved from the flat car to the frame 1. The hydraulic cylinder one 27 is stuck, so that the loading and unloading of the container 5 is more stable and safe; the drive mechanism includes a V-shaped plate 19 and a hydraulic cylinder two 20, one end of the V-shaped plate 19 is hinged with the hydraulic cylinder one 27 and the V The hinge point of type plate 19 and hydraulic cylinder one 27 and the hinge point of hydraulic cylinder one 27 and mounting plate 15 coincide, and the other end of described V-shaped plate 19 is hinged with the piston rod of hydraulic cylinder two 20, and the piston rod of described mounting plate 15 The front end is provided with a limit block 21, and the limit block 21 is positioned above the V-shaped plate 19, and the lower surface of the limit block 21 is a limit surface; the hinge point of the V-shaped plate 19 and the hydraulic cylinder one 27 and The design that hydraulic cylinder one 27 coincides with the hinge point of mounting plate 15 can make V-shaped plate 19 and hydraulic cylinder one 27 rotate synchronously, and then drive hydraulic cylinder two 20 to rotate through hydraulic cylinder two 20 hinged with V-shaped plate 19, so that hydraulic pressure Cylinder 2 20 rotates into the relief cavity 16, thereby making the transfer of the container 5 by the mobile bracket 4 more stable and safe; the above-mentioned limit surface is parallel to the horizontal plane, and the design of the limit block 21 can make the hydraulic cylinder 2 20 move from the relief cavity It is a vertical state when rotating out in 16, so that hydraulic cylinder 2 20 can jack up two containers 5 more stably and safely. As another solution, the drive source 3 9 may also be an air cylinder, or a combination of a screw rod and a motor.

As shown in Fig. 1, Fig. 2 and Fig. 3, a chute 2 17 is provided on the frame 1 along the length direction of the lower arm 12, and the lower arm 12 is slidably connected in the chute 2 17. Both ends of the second groove 17 are open, and the two ends of the lower arm 12 extend to the two ends of the second chute 17. The second chute 17 has a smooth bottom wall and two opposite side walls. There is a strip-shaped protrusion on the side wall, and the protrusion extends along the length direction of the chute 2 17. The side wall of the lower arm 12 is provided with a snap-in slot, and the protrusion is slidably connected to the card. In the slot, the outer end of the plug connector 10 has a lower guide surface 18 . In order to allow the plug joint 10 at the front end of the jacking arm 2 3 to engage with the hoisting hole 6 of the container 5, the lower arm 12 must extend out of the chute 2 17, but after the lower arm 12 is stretched out, there must be a part of it hanging in the air, and this design guarantees that The support length of the lower arm 12 is relatively long, even if a part is suspended in the air, it still has a good supporting effect, which improves the stability and safety of the jacking mechanism; The engagement slots on the side walls of the lower arm 12 cooperate to prevent the lower arm 12 from moving left and right or shaking up and down when sliding on the second chute 17, making the sliding of the lower arm 12 more stable and safe; 12, the upper arm 11 only needs to adjust the height up and down to engage with the hoisting hole 6 of the container 5, so in order to strengthen the structural strength of the plug joint 10, the outer end of the plug joint 10 is only provided with a lower guide surface 18, so that the jacking The second arm 3 can jack up the container 5 more stably and safely.

In this dual-container synchronous loading and unloading system, the two jacking arms 1 can be engaged with the hoisting holes 6 on the outsides of the two containers 5, while the plug joints 10 at the front ends of the jacking arms 2 3 are respectively connected to the insides of the two containers 5. The hoisting holes 6 are clamped, and the two containers 5 are fixed to each other through the two plug joints 10 arranged parallel to each other at intervals. Under driving, two containers 5 can be jacked up at the same time and the bottom surface of the container 5 is suspended; a mobile bracket 4 is set between the jacking arm one 2 and the jacking arm two 3, so that the mobile bracket 4 is driven by the driving source one 7 Insert between the bottom of the container 5 and the flat car, place the two containers 5 on the corresponding mobile supports 4 respectively, then retract the lifting arm 1 2 and the lifting arm 2 3, and simultaneously move the support 4 under the drive of the driving source 1 7 The lower drives the container 5 to move synchronously and move the container 5 to the frame 1. The design of the mobile frame 4 realizes the transfer of the container 5 flat car to the frame 1, and the transfer process will not interfere with the cables above the rails. , the transfer process is more stable and safe; the two plug joints 10 arranged in parallel and at intervals at the front end of the lifting arm 2 3 can fix the two containers 5 to each other, which improves the stability of the two containers 5 in the process of synchronous jacking and transfer sex.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (7)

1. A double-case synchronous loading and unloading system for a container, said double-case synchronous loading and unloading system comprising a frame (1), characterized in that said double-case synchronous loading and unloading system also includes two jacking arms (3) and two setting On the jacking arm one (2) on both sides of the jacking arm two (3), the two jacking arms one (2) are all arranged in parallel with the jacking arm two (3) and can extend out of the frame (1) On the same side, a mobile bracket (4) is provided between the jacking arm two (3) and each jacking arm one (2), and the mobile bracket (4) is slidably connected to the frame (1) and can extend On one side of the frame (1), the two jacking arms one (2) can be clamped with the hoisting hole (6) of the container (5) through translation, and the frame (1) is provided with a movable support ( 4) Extend the driving source one (7) on one side of the frame (1), and the first lifting arm (2) is provided with a driving source two (8) capable of driving the first lifting arm (2) to move up and down, The second jacking arm (3) comprises an upper arm (11) and a lower arm (12), the lower arm (12) is slidably connected to the frame (1), and the upper arm (11) can be connected to the lower arm (12) ) to move up and down, the front end of the upper arm (11) is also hinged with a drive source three (9) for driving the upper arm (11) to move up and down, and the front end of the upper arm (11) has two plug joints that are parallel to each other and arranged at intervals (10). 2. The double-box synchronous loading and unloading system of a container according to claim 1, characterized in that, the frame (1) is provided with a driving source four (13) for driving the sliding of the lower arm (12) , the upper arm (11) is stacked above the lower arm (12), the front end of the upper arm (11) is connected with a connecting plate (14), and two plug connectors (10) are fixed on the connecting plate (14) . 3. The dual-container synchronous loading and unloading system of a container according to claim 2, characterized in that, the driving source three (9) is a hydraulic cylinder one (27), and the front end of the upper arm (11) has two mounting plate (15), a relief cavity (16) is formed between the two mounting plates (15), and the hydraulic cylinder one (27) is located between the two mounting plates (15) and is respectively connected to the two mounting plates (15) The connecting plate (14) is fixedly connected with the hydraulic cylinder one (27), and the upper arm (11) is provided with a driving mechanism that drives the hydraulic cylinder one (27) to rotate into the relief cavity (16). . 4. The double-box synchronous loading and unloading system of a container according to claim 2 or 3, characterized in that, the frame (1) is provided with a chute two (17) along the length direction of the lower arm (12), The lower arm (12) is slidably connected in the second chute (17), both ends of the second chute (17) are open, and the two ends of the lower arm (12) extend to the chute At the two ends of two (17), said chute two (17) has a smooth bottom wall and two opposite side walls, and said side walls have elongated protrusions, said protrusions slide along the Slot two (17) extends in the length direction, and the side wall of the lower arm (12) is provided with a clamping groove, and the protrusion is slidably connected in the clamping groove, and the outer end of the plug connector (10) has Lower guide surface (18). 5. The double-box synchronous loading and unloading system of a container according to claim 3, wherein the drive mechanism comprises a V-shaped plate (19) and a hydraulic cylinder two (20), and the V-shaped plate (19) One end of one of the hydraulic cylinders (27) is hinged and the hinge point of the V-shaped plate (19) and the hydraulic cylinder one (27) coincides with the hinge point of the hydraulic cylinder one (27) and the mounting plate (15). The other end of the type plate (19) is hinged with the piston rod of the hydraulic cylinder two (20), and the front end of the mounting plate (15) is provided with a limit block (21), and the limit block (21) is located on the V-shaped Above the plate (19), the lower surface of the limiting block (21) is a limiting surface. 6. A double-box synchronous loading and unloading system for containers according to claim 1, 2 or 3, characterized in that, said jacking arm one (2) both includes a moving beam (22) and a jacking beam (23) , the moving beam (22) is slidably connected to the frame (1), the jacking beam (23) is stacked above the moving beam (22) and the jacking beam (23) can move up and down relative to the moving beam (22) To move, the outer end and the inner end of the jacking beam (23) are provided with clamping arms (24), and the clamping arms (24) are provided with plug posts and driving sources for driving the clamping arms (24) to move up and down Two (8). 7. The double-box synchronous loading and unloading system of a container according to claim 1, 2 or 3, characterized in that, the mobile support (4) includes a guide rail frame (25) and a transfer frame (26), and the guide rail Frame (25) is slidably connected on the frame (1), and described transfer frame (26) is slidably connected on the guide rail frame (25), and the moving direction of described transfer frame (26) and guide rail frame (25) is parallel.