A port cargo handling device

Abstract

The application provides a port cargo handling device, and relates to a handling device which comprises a sliding frame part, an auxiliary part and a positioning part. The sliding frame part is additionally arranged at the mounting end of the clamping jaw part, and is used for realizing the free sliding of the clamping jaw part in the X direction and the Y direction after being unlocked. The auxiliary part comprises four groups of plate one which are sequentially positioned on the peripheral side walls of a rectangular container, four groups of plate two which are correspondingly arranged below the four groups of plate one, and a reinforcing support plate which is positioned on the bottom of the container. The positioning part comprises a bottom support plate which is fixed to the bottom plate of the trailer compartment and is used for supporting the container. A group of pushing group one and a locking group one are respectively arranged and fixed on the left and right sides of the bottom support plate along the X direction of the trailer body. A group of pushing group two and a locking group two are respectively arranged and fixed on the front and back ends of the bottom support plate. The application can realize the higher degree of automation of the position fine adjustment of the container during the trailer transfer handling, accurately determine the placed position, complete the position locking after the positioning, and ensure the safety of the trailer carrying and driving.

Description

Technical Field

[0001] This invention relates to a loading and unloading device, and more particularly to a port cargo loading and unloading device. Background Technology

[0002] Port cargo is generally loaded in containers. Using containers for cargo transshipment allows for direct loading at the shipper's warehouse and unloading at the consignee's warehouse. When changing vehicles or ships en route, there is no need to remove the cargo from the container for reloading, making it not only convenient but also safer.

[0003] The greatest success of container shipping lies in the standardization of its products and the resulting transportation system. For example, a patented management system for coordinating gantry cranes and trucks (publication number CN114634107A) demonstrates the process of loading containers onto trailers using a hoisting method. However, it should be noted that the aforementioned patent or existing technology generally uses a rope transfer method. When a container is hoisted onto a trailer using a rope, the position of the container on the trailer can be inaccurate due to the vehicle's parking position and the swaying of the rope. Since the container itself is quite heavy, it is difficult to readjust or reposition it after placement. Therefore, manual installation of positioning devices is required based on the specific placement position to ensure the driving safety of the vehicle after it starts, which is time-consuming and labor-intensive.

[0004] In the prior art, there is another type of loading and unloading equipment, such as the port logistics container loading and unloading equipment and method described in patent (publication number CN116767876B). Although it can achieve stable transfer and transportation compared to hoisting with ropes, it is still difficult to ensure that the container is grabbed to a specific point every time and then placed in a precise location after transfer. This is because containers are generally large, and the starting point is difficult to unify to a fixed point. When the loading and unloading equipment moves to the position and grabs, it is also difficult to grab the same position on each container. Correspondingly, when moving the container to the target location after grabbing, it is also difficult to place the container in a fixed position (the application of this in the aforementioned patent or in the prior art is generally only to grab and place the approximate position). Especially for the action of transferring the container to the trailer, since the parking position of the trailer may be off, it is also difficult to achieve precise positioning. Therefore, for this type of positioning, it is still necessary to manually install positioning components according to the specific placement position to ensure the driving safety after the vehicle starts, which is time-consuming and labor-intensive. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide a port cargo loading and unloading device that enables more automated position fine-tuning of containers containing port cargo during transshipment and loading / unloading. This allows for precise determination of the placement location, and the device locks the position after positioning to ensure the safety of trailer transport. Position fine-tuning and positioning require minimal manual intervention and eliminates the need for precise trailer parking. It also facilitates subsequent vehicle / ship transfers and enables container transshipment even under special circumstances without the need for additional transshipment equipment.

[0006] This invention provides the following technical solution:

[0007] A port cargo loading and unloading device includes a slide section, an auxiliary section, and a positioning section. The slide section is added to the mounting end of the gripper section to allow the gripper section to slide freely in the X and Y directions after unlocking. The auxiliary section includes four sets of plates I sequentially positioned on the periphery side wall of a rectangular container, four sets of plates II corresponding to the four sets of plates I below, and a reinforcing support plate positioned at the bottom of the container. The positioning section includes a bottom support plate fixed to the trailer floor for supporting the container. The bottom support plate has a set of push-up group I and a set of locking group I distributed and fixed on the left and right sides along the X direction of the trailer body, and a set of push-up group II and a set of locking group II distributed and fixed at its front and rear ends.

[0008] After the container is clamped and suspended above the trailer by the gripper, the container's position in the Z-direction is determined. Pushing group one and pushing group two are activated to push the fourth plate group two, allowing the gripper and the container to slide freely with the carriage to adjust their positions in the X and Y directions, thus determining the container's placement position in the X and Y directions. After the container's position is determined, the gripper group continues to lower the container until it is placed on the bottom support plate. At this time, locking group one and locking group two are activated to engage the locking mechanism on the side wall of the fourth plate group one.

[0009] At this point, the placement and locking of the container can be completed. This invention can automatically and batch-position containers of different models and sizes. That is, after pushing, the distance between the two sets of pushing groups one is the lateral dimension distance of the container, and the distance between the two sets of pushing groups two is the longitudinal dimension distance of the container. After the gripper group determines the position of the container, it is placed on the bottom support plate. Then, locking group one and locking group two extend to lock the container in the determined position. When locking, locking group one can prevent the container from moving forward and backward, as well as from swaying up and down. Locking group two can prevent the container from moving to the left and right, as well as from swaying up and down. The force that prevents the movement comes from the fixation between the locking group and the bottom support plate, rather than the locking drive cylinder of the locking group. Therefore, it will not damage the locking drive cylinder. At the same time, the locking positioning process is also relatively automated and accurate, avoiding the subsequent process of adjusting the container or reinstalling the positioning components.

[0010] Once the container is positioned, it can be locked in place. This process requires minimal human intervention, thus saving time and effort. Furthermore, the required trailer parking space and suspension position for the equipment do not need to be highly precise.

[0011] Preferably, the bottom support plate and the reinforcing support plate are in contact through a roller set, and a set of drive groups one is fixedly distributed on each of the left and right sides of the bottom support plate along the extension direction of the trailer body. A set of linear racks connected to the drive groups one is also fixedly distributed on the bottom support plate along the extension direction of the vehicle body. Therefore, when it is necessary to transfer the container by docking the vehicle body, there is no need to start the crane. It is only necessary to dock the two sides and start the drive groups one to realize the driving transfer of the container.

[0012] Preferably, a set of sliding plates is slidably connected to the bottom support plate located at the end of the trailer body away from the front. The sliding plates are used to fix and install the second pusher group and the second locking group. One end of the sliding plate is equipped with a hinge shaft, which is hinged to the drive end of a set of docking drive cylinders. When it is necessary to transfer the container between the two sets of trailers, the docking drive cylinders at the rear of the two sets of trailer bodies are activated, driving the sliding plates to drive the second pusher group and the second locking group to slide off the bottom support plate in a straight line. After the sliding plates that have slid off the bottom support plate rotate 90° around the hinge shaft, the rear ends of the two sets of trailers are docked. There is no second pusher group and the second locking group forming a docking obstacle between them. The container is then transferred under the drive of the first drive group and the rolling assistance of the roller group, thus solving the defect of the difficulty in transferring heavy containers.

[0013] Preferably, the contact end between the first pusher assembly and the second plate is a first contact roller. The axis of the first contact roller extends along the Z direction. When the two trailers are docked, it is used to guide the container moving in a straight line, so as to improve the stability and straightness of the transfer.

[0014] Preferably, the contact end between the pusher assembly two and the plate two is a contact roller two. The axis of the contact roller two extends along the Y direction, and it is used to guide the container in a straight line when the container descends along the Z direction, so as to not only improve the stability of the descent, but also ensure better straightness of the descent.

[0015] Preferably, the pushing drive cylinders of the first and second pushing groups, as well as the locking drive cylinders of the first and second locking groups, are all mounted and positioned on the bottom support plate via upright plates. A guide block is also fixedly installed on the bottom support plate. The plug rod at the driving end of the locking drive cylinder is linearly guided and installed in the guide block. The setting of the guide block can enhance the stability of the plug rod after plugging, so as to better overcome the tendency of the container to move after the trailer starts.

[0016] Preferably, the drive assembly is a set of drive gears that mesh with a linear rack. The two ends of the drive gear shaft are mounted on a set of side frames, which are mounted on a bottom support plate and also have a transmission motor installed on them to drive the shaft to rotate. When the container is placed, the rotation of the drive gear has been adjusted to mesh with the linear rack during placement.

[0017] Preferably, but not all containers need to be docked and transferred, the side frame can be slidably connected to the bottom support plate. A set of mounting brackets is also provided on the bottom support plate. The mounting brackets are equipped with a forward drive cylinder for driving the side frame forward so that the drive gear on it meshes with the linear rack. Therefore, when docking is required, the forward drive gear can be pushed to mesh with the linear rack.

[0018] Preferably, the gripper portion includes at least one set of electric lead screws for driving the gripper unit to perform gripping operations. The top two sides of the container are fixed with triangular fixing blocks for cooperating with the gripper unit for gripping. The gripping end of the gripper unit is provided with a gripping inclined surface that abuts against the triangular fixing block. The gripping inclined surface and the triangular fixing block form an opening that flares out toward the top of the container, thereby improving the stability of the gripping.

[0019] The electric lead screw is mounted on the mounting plate, which is slidably mounted on the intermediate layer plate along the X-direction. The intermediate layer plate is slidably mounted on the top layer plate along the Y-direction. An X-direction locking block is also mounted on the intermediate layer plate, and an X-direction locking cylinder is mounted on the X-direction locking block. The driving end of the X-direction locking cylinder is used to insert and lock onto the mounting plate to lock the mounting plate relative to the intermediate layer plate. A Y-direction locking block is also mounted on the top layer plate, and a Y-direction locking cylinder is mounted on the Y-direction locking block. The driving end of the Y-direction locking cylinder is used to insert and lock onto the intermediate layer plate to lock the intermediate layer plate relative to the top layer plate. When the X-direction locking cylinder and the Y-direction locking cylinder are respectively disengaged from the mounting plate and the intermediate layer plate, the carriage is in an unlocked state.

[0020] Preferably, the top of the carriage section is provided with a lifting ring for connecting the lifting rope. The lifting ring is provided in at least three sets that are not distributed in a straight line. In this case, lifting the container and placing it on the trailer by cooperating with the lifting rope of the crane is a relatively conventional and convenient loading and unloading method. With the present invention, it can be ensured that the position of the container placed on the trailer can be automatically and accurately determined without the need for subsequent installation of positioning components. This is more convenient and has a higher degree of automation, and is also safer during container transportation.

[0021] The beneficial effects of this invention are:

[0022] 1. This invention can automatically and batch-position containers of different sizes. That is, after pushing, the distance between the two sets of pushing groups one is the lateral dimension of the container, and the distance between the two sets of pushing groups two is the longitudinal dimension of the container. After the gripper group determines the position of the container, it is placed on the bottom support plate. Then, locking group one and locking group two extend to lock the container in the determined position. When locking, locking group one can prevent the container from moving forward and backward and from swaying up and down. Locking group two can prevent the container from moving left and right and from swaying up and down. The force that prevents the movement comes from the fixation between the locking group and the bottom support plate, not from the locking drive cylinder of the locking group. Therefore, it will not damage the locking drive cylinder. At the same time, the positioning process is also more automated and accurate, avoiding the subsequent adjustment of the container or reinstallation of the positioning components.

[0023] 2. This invention can lock the container in place after it has been positioned, requiring minimal manual intervention, thus saving time and effort. Furthermore, the required trailer parking and suspension positions do not need to be highly precise.

[0024] 3. When it is necessary to transfer the container after docking the vehicle body, the present invention does not require starting the crane. Only the two sides need to be docked and the drive group one needs to be started to realize the drive transfer of the container, so as to solve the defect of the difficulty in transferring the heavy container. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional view of the structure of the present invention along the Y direction;

[0027] Figure 2 This is a cross-sectional view of the structure of the present invention along the X-direction;

[0028] Figure 3 yes Figure 2 A schematic diagram of the structure where the sliding plate slides out of the trailer;

[0029] Markings in the diagram:

[0030] 1. Skid section; 2. Auxiliary section; 3. Positioning section; 4. Container; 5. Trailer; 6. Gripper section; 7. Lifting ring; 11. Intermediate shelf; 12. X-axis locking block; 13. X-axis locking cylinder; 14. Top shelf; 15. Y-axis locking block; 16. Y-axis locking cylinder; 21. Sheet 1; 22. Sheet 2; 23. Reinforcing support plate; 31. Bottom support plate; 32. Pushing assembly 1; 33. Locking position assembly 1; 34. Pushing assembly 2; 35. Locking group two; 36. Drive group one; 37. Linear rack; 38. Abutting roller one; 39. Abutting roller two; 310. Roller group; 51. Slide plate; 52. Hinge shaft; 53. Docking drive cylinder; 54. Vertical plate; 55. Guide block; 56. Side frame; 57. Mounting frame; 58. Forward push drive cylinder; 61. Gripper unit; 62. Electric lead screw; 63. Triangular fixing block; 64. Mounting plate. Detailed Implementation

[0031] Example 1

[0032] like Figure 1-2 As shown, a port cargo loading and unloading device, in this embodiment, includes a carriage section 1, an auxiliary section 2 and a positioning section 3. The carriage section 1 is added to the mounting end of the gripper section 6 to enable the gripper section 6 to slide freely in the X and Y directions after unlocking.

[0033] The auxiliary part 2 includes four sets of plates 21 sequentially positioned on the periphery of the rectangular container 4, four sets of plates 22 corresponding to the lower part of the four sets of plates 21, and a reinforcing support plate 23 positioned at the bottom of the container 4.

[0034] The positioning part 3 includes a bottom support plate 31 fixed to the bottom plate of the trailer 5 for supporting the container 4. A set of push-up group 32 and a locking group 33 are fixed on the left and right sides of the bottom support plate 31 along the X direction of the trailer body. A set of push-up group 34 and a locking group 35 are also fixed at its front and rear ends.

[0035] After the gripper 6 clamps the container 4 and suspends it above the trailer 5, the position of the container 4 in the Z direction is determined. The pusher group 1 32 and pusher group 2 34 are activated to push the fourth plate 22, so that the gripper 6 and the container 4 slide freely with the carriage 1 to adjust the position in the X and Y directions, thereby determining the position of the container 4 in the X and Y directions. After the position of the container 4 is determined, the gripper group continues to drive the container 4 down until it is placed on the bottom support plate 31. At this time, the locking group 1 33 and locking group 2 35 are activated to insert and lock the container on the side wall of the fourth plate 21.

[0036] At this point, the placement and locking of container 4 can be completed. This invention can automatically and batch-position containers 4 of different sizes. That is, the distance between the two sets of push-up groups 32 after the push is the lateral dimension distance of container 4, and the distance between the two sets of push-up groups 34 is the longitudinal dimension distance of container 4. After the gripper group determines the position of container 4, it is placed on the bottom support plate 31. Then, the locking group 33 and the locking group 35 extend to lock the container 4 in the determined position. When locking, the insertion of the locking group 33 can prevent the container 4 from moving forward and backward, as well as the swaying tendency of moving up and down. The insertion of the locking group 35 can prevent the container 4 from moving to the left and right sides, as well as the swaying tendency of moving up and down. The force that prevents the tendency comes from the fixation between the locking group and the bottom support plate 31, rather than the locking drive cylinder of the locking group. Therefore, it will not damage the locking drive cylinder. At the same time, the locking positioning process is also more automated and accurate, avoiding the subsequent adjustment of container 4 or reinstallation of positioning components.

[0037] After the container 4 is placed in the correct position, it can be locked in place. This process does not require much manual intervention, so it is time-saving and labor-saving. At the same time, the parking space and suspension position of the trailer 5 required by the equipment do not require high precision.

[0038] Example 2

[0039] like Figure 1-3 As shown, a port cargo loading and unloading device, in this embodiment, is a further limitation based on embodiment 1. The bottom support plate 31 and the reinforcing support plate 23 are in contact through roller group 310, and a set of drive group 36 is fixedly distributed on each of the left and right sides of the bottom support plate 31 along the extension direction of the trailer body 5. A set of linear racks 37 that are driven and connected to the drive group 36 are also fixedly distributed on the plate 21 along the extension direction of the vehicle body. Therefore, when it is necessary to transfer the container 4 by docking the vehicle body, there is no need to start the crane. It is only necessary to dock the two sides and start the drive group 36 to realize the drive transfer of the container 4.

[0040] A set of sliding plates 51 is slidably connected to the bottom support plate 31 located at the end of the trailer 5 away from the front. The sliding plates 51 are used to fix the push assembly 34 and the locking assembly 35. A hinge shaft 52 is installed at one end of the sliding plates 51. The hinge shaft 52 is hinged to the drive end of a set of docking drive cylinders 53. When it is necessary to transfer the container 4 between the two sets of trailers 5, the docking drive cylinders 53 at the rear of the two sets of trailers 5 are activated. The sliding plates 51 drive the push assembly 34 and the locking assembly 35 to slide off the bottom support plate 31 in a straight line. After the sliding plates 51 that have slid off the bottom support plate 31 rotate 90° around the hinge shaft 52, the rear of the two sets of trailers 5 are docked. There is no push assembly 34 and locking assembly 35 between them to form a docking obstacle. The container 4 is transferred under the drive of the drive assembly 36 and the rolling assistance of the roller assembly 310, so as to solve the defect of the difficulty in transferring the heavy container 4.

[0041] The contact end of the pusher assembly 32 and the plate 22 is the contact roller 38. The axis of the contact roller 38 extends along the Z direction. When the two trailers 5 are docked, it is used to guide the container 4 moving in a straight line, so as to improve the stability and straightness of the transfer.

[0042] The contact end between the pusher assembly 2 34 and the plate 2 22 is the contact roller 2 39. The axis of the contact roller 2 39 extends along the Y direction. When the container 4 descends along the Z direction, it is used to guide the container 4 in a straight line, which not only improves the stability of the descent, but also ensures a better straightness of the descent.

[0043] The pushing drive cylinders of the first pushing group 32 and the second pushing group 34, as well as the locking drive cylinders of the first locking group 33 and the second locking group 35, are all installed and positioned on the bottom support plate 31 by the upright plate 54. A guide block 55 is also fixedly installed on the bottom support plate 31. The plug rod of the driving end of the locking drive cylinder is linearly guided and installed in the guide block 55. The setting of the guide block 55 can enhance the stability of the plug rod after plugging, so as to better overcome the tendency of the container 4 to move after the trailer 5 starts.

[0044] Drive group 36 is a set of drive gears that mesh with linear rack 37. The two ends of the drive gear shaft are mounted on a set of side frames 56. The side frames 56 are mounted on the bottom support plate 31, and a transmission motor for driving the shaft to rotate is also installed on them. When the container 4 is placed, the index of the drive gear has been adjusted to mesh with the linear rack 37 during placement.

[0045] However, not all containers 4 need to be docked and transferred. Therefore, the side frame 56 can be slidably connected to the bottom support plate. A set of mounting brackets 57 is also provided on the bottom support plate. The mounting brackets 57 are equipped with a forward drive cylinder 58 for driving the side frame 56 forward so that the drive gear on it meshes with the linear rack 37. Therefore, when docking is required, the forward drive gear can be pushed to mesh with the linear rack 37.

[0046] The gripper part 6 includes at least one set of electric lead screws 62 for driving the gripper unit 61 to perform gripping operations. Triangular fixing blocks 63 for cooperating with the gripper unit 61 to perform gripping operations are fixed on both sides of the top of the container 4. The gripping end of the gripper unit 61 is provided with a gripping inclined surface that abuts against the triangular fixing block 63. The gripping inclined surface and the triangular fixing block 63 form an opening that flares out toward the top of the container 4, thereby improving the stability of gripping.

[0047] An electric lead screw 62 is mounted on a mounting plate 64. The mounting plate 64 is slidably mounted on an intermediate layer plate 11 along the X direction. The intermediate layer plate 11 is slidably mounted on an upper layer plate 14 along the Y direction. An X-direction locking block 12 is also mounted on the intermediate layer plate 11. An X-direction locking cylinder 13 is mounted on the X-direction locking block 12. The drive end of the X-direction locking cylinder 13 is used to insert and lock the mounting plate 64 relative to the intermediate layer plate 11. A Y-direction locking block 15 is also mounted on the upper layer plate 14. A Y-direction locking cylinder 16 is mounted on the Y-direction locking block 15. The drive end of the Y-direction locking cylinder 16 is used to insert and lock the intermediate layer plate 11 relative to the upper layer plate 14. When the X-direction locking cylinder 13 and the Y-direction locking cylinder 16 are respectively disengaged from the mounting plate 64 and the intermediate layer plate 11, the carriage part 1 is in an unlocked state.

[0048] The top of the carriage section 1 is provided with a lifting ring 7 for connecting the lifting rope. The lifting ring 7 has at least three sets that are not distributed in a straight line. At this time, lifting the container 4 and placing it on the trailer 5 by cooperating with the lifting rope of the crane is a relatively conventional and convenient loading and unloading method. With the present invention, it can be ensured that the position of the container 4 placed on the trailer 5 can be automatically and accurately determined without the need for subsequent installation of positioning components. It is more convenient and has a higher degree of automation. At the same time, it is safer when transporting the container 4.

[0049] The working principle of this invention is:

[0050] This invention can automatically and in batches determine the positioning of containers 4 of different sizes. Specifically, the distance between the two sets of push-up groups 32 after pushing is the lateral dimension of container 4, and the distance between the two sets of push-up groups 34 is the longitudinal dimension of container 4. After the gripper group determines the position of container 4, it is placed on the bottom support plate 31. Then, the locking groups 33 and 35 extend to lock the container 4 in the determined position. During locking, the insertion of the locking group 33 prevents the container 4 from moving forward and backward, as well as from swaying up and down. The insertion of the locking group 35 prevents the container 4 from moving to the left and right, as well as from swaying up and down. The force resisting these movements comes from the locking mechanism. The fixing between the positioning group and the bottom support plate 31 is done by the locking drive cylinder of the locking group, rather than the locking group itself. Therefore, it will not damage the locking drive cylinder. At the same time, the locking positioning process is more automated and accurate, avoiding the need for subsequent adjustment of the container 4 or reinstallation of the positioning components. Moreover, the locking can be performed after the container 4 is placed in the correct position. During this process, little manual intervention is required, which saves time and effort. At the same time, the parking space and suspension position of the trailer 5 required by the equipment do not require high precision. When the container 4 needs to be transferred by docking the vehicle body, there is no need to start the crane. Only the two sides need to be docked and the drive group 36 needs to be started to drive the container 4 to transfer, thus solving the problem of the difficulty in transferring the heavy container 4.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A port cargo loading and unloading device, characterized in that, The container includes a carriage section (1), an auxiliary section (2), and a positioning section (3). The carriage section (1) is added to the mounting end of the gripper section (6) to enable the gripper section (6) to slide freely in the X and Y directions after unlocking. The auxiliary section (2) includes four sets of plates one (21) sequentially positioned on the periphery side wall of the rectangular container (4), four sets of plates two (22) corresponding to the four sets of plates one (21) below, and a reinforcing support plate (23) positioned at the bottom of the container (4). The positioning section (3) includes a bottom support plate (31) fixed to the bottom plate of the trailer (5) for supporting the container (4). The bottom support plate (31) has a set of push-up group one (32) and a locking group one (33) fixed on each side of the left and right sides along the X direction of the trailer (5) body extension. A set of push-up group two (34) and a locking group two (35) are also fixed at its front and rear ends. After the gripper (6) clamps the container (4) and suspends it above the trailer (5), the position of the container (4) in the Z direction is determined. The pusher group one (32) and pusher group two (34) are started to push the four-plate two (22), so that the gripper (6) and the container (4) slide freely with the carriage (1) to adjust the position in the X and Y directions, so as to determine the position of the container (4) in the X and Y directions. After the position of the container (4) is determined, the gripper group continues to drive the container (4) down until it is placed on the bottom support plate (31). At this time, the locking group one (33) and locking group two (35) are started to insert the locking on the side wall of the four-plate one (21). The bottom support plate (31) and the reinforcing support plate (23) are in contact through a roller group (310), and a set of drive group one (36) is fixedly distributed on the left and right sides of the bottom support plate (31) along the extension direction of the trailer (5) body. A set of linear racks (37) that are driven and connected to the drive group one (36) are also fixedly distributed on the plate one (21) along the extension direction of the body. A set of sliding plates (51) is also slidably connected to the bottom support plate (31) located at the end of the trailer (5) away from the front. The sliding plates (51) are used to fix the push assembly two (34) and the locking assembly two (35). A hinge shaft (52) is installed at one end of the sliding plates (51). The hinge shaft (52) is hinged to the drive end of a set of docking drive cylinders (53). When it is necessary to transfer the container (4) on the two sets of trailers (5), the docking drive cylinders at the rear of the two sets of trailers (5) are activated. (53) The drive slide (51) drives the push group two (34) and the locking group two (35) to slide off the bottom support plate (31) in a straight line. After the slide (51) of the sliding bottom support plate (31) rotates 90° around the hinge axis (52), the two trailers (5) are docked. There is no push group two (34) and locking group two (35) forming a docking obstacle between them. The container (4) is transferred under the drive of the drive group one (36) and the rolling assistance of the roller group (310). The drive group 1 (36) is a set of drive gears that mesh with the linear rack (37). The two ends of the shaft of the drive gear are mounted on a set of side frames (56). The side frames (56) are mounted on the bottom support plate (31), and a transmission motor for driving the shaft to rotate is also mounted on them. The side frame (56) is slidably connected to the bottom support plate (31). A set of mounting brackets (57) is also provided on the bottom support plate (31). A forward drive cylinder (58) for driving the side frame (56) forward so that the drive gear on it meshes with the linear rack (37) is installed on the mounting bracket (57).

2. A port cargo loading and unloading device according to claim 1, characterized in that, The abutting end of the pusher group one (32) and the plate two (22) is the abutting roller one (38). The axis of the abutting roller one (38) extends along the Z direction, and it is used to guide the container (4) moving in a straight line when the two trailers (5) are docked.

3. A port cargo loading and unloading device according to claim 1, characterized in that, The contact end between the pusher assembly 2 (34) and the plate 2 (22) is the contact roller 2 (39). The axis of the contact roller 2 (39) extends along the Y direction, and it is used to guide the container (4) in a straight line when the container (4) descends along the Z direction.

4. A port cargo loading and unloading device according to any one of claims 1-3, characterized in that, The push-drive cylinders of the push-pull group one (32) and push-pull group two (34), as well as the lock-position drive cylinders of the lock-position group one (33) and lock-position group two (35), are all installed and positioned on the bottom support plate (31) by the upright plate (54), and a guide block (55) is also fixedly installed on the bottom support plate (31). The plug rod of the drive end of the lock-position drive cylinder is linearly guided and installed in the guide block (55).

5. A port cargo loading and unloading device according to claim 1, characterized in that, The gripper part (6) includes at least one set of electric screws (62) for driving the gripper unit (61) to perform gripping operations. The top two sides of the container (4) are fixed with triangular fixing blocks (63) for cooperating with the gripper unit (61) for gripping. The gripping end of the gripper unit (61) is provided with a gripping inclined surface that abuts against the triangular fixing block (63). The gripping inclined surface and the triangular fixing block (63) form an opening that flares out toward the top of the container (4). The electric lead screw (62) is mounted on the mounting plate (64), which is slidably mounted on the intermediate layer plate (11) along the X direction. The intermediate layer plate (11) is slidably mounted on the top layer plate (14) along the Y direction. An X-direction locking block (12) is also mounted on the intermediate layer plate (11), and an X-direction locking cylinder (13) is mounted on the X-direction locking block (12). The driving end of the X-direction locking cylinder (13) is used to insert and lock the position on the mounting plate (64) relative to the intermediate layer plate (14). 1) Locking mounting plate (64), the top plate (14) is also equipped with a Y-direction locking block (15), the Y-direction locking block (15) is equipped with a Y-direction locking cylinder (16), the driving end of the Y-direction locking cylinder (16) is used to insert and lock the middle layer plate (11) relative to the top plate (14), and when the X-direction locking cylinder (13) and the Y-direction locking cylinder (16) are respectively disengaged from the mounting plate (64) and the middle layer plate (11), the carriage part (1) is in the unlocked state.

6. A port cargo loading and unloading device according to any one of claims 1-3 and 5, characterized in that, The top of the carriage section (1) is provided with a hanging ring (7) for connecting the hanging rope, and the hanging ring (7) is provided with at least three sets that are not distributed in the same straight line.

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