Container cargo loading and unloading conveying carrier plate and loading and unloading method

Abstract

The invention discloses a container cargo loading and unloading conveying carrier plate and a loading and unloading method. The technical problem that automatic loading and unloading cannot be achieved in the prior art is mainly solved. The conveying carrier plate comprises a carrier plate body, a rolling unit, a lifting unit and a driving unit. The rolling unit comprises a first roller assembly and a second roller assembly; the first roller assembly is used for driving the carrier plate body to move on the mounting platform; the second roller assembly is used for driving goods to move on the carrier plate body; the lifting unit comprises a plurality of lifting assemblies, and each lifting assembly comprises a movable arm and a fork arm; the movable arm is installed on the carrier plate body and is in sliding connection with the carrier plate body, and the fork arm is located above the movable arm and used for lifting goods; the driving unit comprises a plurality of driving assemblies, and each driving assembly comprises a first driving electric cylinder and a second driving electric cylinder; the first driving electric cylinder is used for driving the fork arm to ascend or descend; the second driving electric cylinders are used for driving the corresponding movable arms to slide relative to the carrier plate body. The conveying carrier plate can realize quick loading and unloading.

Description

Technical Field

[0001] The invention relates to a container loading and unloading device, and in particular to a container cargo loading and unloading conveying carrier and a loading and unloading method. Background Art

[0002] The traditional way of loading and unloading containers is to carry the goods manually or with the help of traditional equipment such as forklifts, overhead cranes, conveyor belts, etc. When loading, the goods are first moved to the vicinity of the vehicle to be loaded, and then moved into the container for loading and stacking. When unloading, the goods are carried by hand or with simple tools on the vehicle, and then moved to the target point again with traditional equipment. Therefore, the efficiency of this loading and unloading method is extremely low.

[0003] In order to improve the loading efficiency, the existing technology realizes the overall loading of goods through an external loading platform (system), that is, the goods are stacked in advance, and then the stacked goods are sent to the loading plate of the loading platform through the corresponding automated equipment. When the loading plate is full, the goods and the pallet are sent into the container body by moving the loading plate, so as to realize the rapid loading of goods. However, this method cannot realize the rapid automatic unloading of goods. The reason is that the pallet is in direct contact with the container body, and the existing loading plate cannot enter the bottom of the pallet and lift it. The goods can only be moved to the loading plate again by manual handling to complete the unloading. It can be seen that the existing technology still cannot realize automatic loading and unloading, which affects the transportation efficiency of logistics. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that the prior art cannot realize automatic loading and unloading of vehicles, and to provide a container cargo loading and unloading conveying carrier and a loading and unloading method.

[0005] To achieve the above objectives, the technical solutions provided by the present invention are:

[0006] A container cargo loading and unloading conveying carrier, located on a mounting platform, has the following special features:

[0007] It includes a carrier body, a rolling unit, a lifting unit and a driving unit;

[0008] The rolling unit includes a first roller assembly and a second roller assembly; the first roller assembly is installed at the bottom of the carrier body, and is used to drive the carrier body to move on the mounting platform; the second roller assembly is installed above the carrier body, and is used to drive the goods to move on the carrier body;

[0009] The lifting unit includes a plurality of lifting assemblies, each of which includes a movable arm and a fork arm; the movable arm is mounted on the carrier body and slidably connected to the carrier body, and the sliding direction of the movable arm is consistent with the moving direction of the carrier body; the fork arm is located above the movable arm and movably connected to the movable arm, and is used to lift the goods; the height of the fork arm in the initial state is lower than the height of the second roller assembly;

[0010] The driving unit includes multiple driving components corresponding to the lifting components one by one, and each driving component includes a first driving electric cylinder and a second driving electric cylinder; the first driving electric cylinder is installed on the corresponding movable arm, and its output end is connected to the end of the corresponding fork arm away from the lifted goods, which is used to drive the fork arm to rise or fall; the second driving electric cylinder is installed on the carrier body, and its output end is connected to the corresponding movable arm, which is used to drive the corresponding movable arm to slide relative to the carrier body.

[0011] Furthermore, one end of the carrier body is provided with a plurality of slopes inclined toward the end, and the top of each slope is flush with the upper end of the second roller assembly, so as to facilitate the goods to slide off the carrier body.

[0012] Furthermore, each of the movable arms is slidably connected to the carrier body via a sliding assembly;

[0013] The sliding assembly includes a slide rail and a slider; the slide rail is installed on the carrier body, and the end close to one end of the slope extends between two adjacent slopes; the slider is installed at the bottom of the movable arm and is located in the slide rail, and the width of the slider is adapted to the width of the slide rail.

[0014] Furthermore, the first roller assembly includes a plurality of first rollers with the same structure, each of the first rollers is respectively connected to the bottom of the carrier body, and the central axes of all the first rollers are respectively parallel.

[0015] Further, the second roller assembly includes a plurality of slide grooves and a plurality of second rollers installed in each slide groove;

[0016] A plurality of slide grooves are arranged in parallel, and are respectively installed on the carrier body with the groove openings facing upwards; a plurality of second rollers have the same structure and are evenly distributed in the groove openings of the corresponding slide grooves; the central axis of each second roller is respectively perpendicular to the groove wall of the corresponding slide groove, and the highest rolling cut surface of each second roller is higher than the groove opening of the corresponding slide groove; the height of the fork arm in the initial state is lower than the highest rolling cut surface of the second roller;

[0017] The lifting assembly is located on the carrier body between two adjacent slide grooves, and the sliding direction of the movable arm in the lifting assembly is parallel to the length direction of the slide groove;

[0018] The top of each of the slopes is flush with the groove edge of each chute.

[0019] Furthermore, a U-shaped groove is provided on the top of the movable arm, and the first driving electric cylinder is installed in the U-shaped groove of the corresponding movable arm.

[0020] Furthermore, a plurality of connecting rods are respectively provided between the movable arm and the corresponding fork arm, and two ends of each connecting rod are respectively hinged to the corresponding movable arm and fork arm.

[0021] Furthermore, the first driving electric cylinder and the second driving electric cylinder are both servo electric cylinders.

[0022] The present invention also provides a method for loading and unloading cargo in a container, which is characterized in that it comprises the following steps:

[0023] Step【1】Loading

[0024] 1.1. Move the installation platform to the entrance of the container and make the height of the installation platform flush with the bottom of the container, then place the above-mentioned container cargo loading and unloading conveying carrier on the installation platform, and make the height of each fork arm lower than the height of the second roller assembly;

[0025] 1.2. Place multiple pallets on the carrier body in sequence. After all pallets are filled with goods, move the carrier body to the designated position in the container through the first roller assembly;

[0026] 1.3. The carrier body is moved in the reverse direction by the first roller assembly, and at the same time, each pallet is slid down from the carrier body in sequence by the second roller assembly until the carrier body is moved out of the container and all pallets are moved from the carrier body to the container, thereby completing the loading;

[0027] Step【2】Unloading

[0028] 2.1. Move the carrier body to the entrance of the container through the first roller assembly, and drive the corresponding movable arm to extend the carrier body through the second driving electric cylinder until it extends under the pallet in the container;

[0029] 2.2. The first driving electric cylinder drives the corresponding fork arm to rise and lift the pallet until the bottom of the pallet is higher than the height of the second roller assembly and then stops;

[0030] 2.3. The corresponding movable arm is driven again by the second driving electric cylinder until the movable arm drives the corresponding fork arm and the tray thereon to move above the carrier body;

[0031] 2.4. The first driving electric cylinder drives the corresponding fork arm again to drive the pallet down until the bottom of the pallet contacts the second roller assembly and the fork arm is separated from the bottom of the pallet;

[0032] 2.5. The pallet slides down from the carrier body through the second roller assembly, completing one unloading;

[0033] 2.6. Repeat steps 2.1 to 2.5 according to the quantity of goods until all goods are unloaded.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. In a container cargo loading and unloading conveying carrier provided by the present invention, the first roller assembly is used to drive the carrier body to move on the mounting platform, the second roller assembly is used to drive the cargo to move on the carrier body, the lifting assembly is used to lift the cargo and can move on the carrier body, the first driving electric cylinder is used to drive the fork arm to rise or fall, and the second driving electric cylinder is used to drive the corresponding movable arm to slide relative to the carrier body. The overall structure of the present invention is compact, and can realize rapid and automatic loading and unloading of cargo, greatly improving the loading and unloading efficiency.

[0036] 2. In a container cargo loading and unloading conveying carrier provided by the present invention, a plurality of slopes are provided on the carrier body to ensure that the cargo slides off the carrier body, or the carrier body is smoothly pulled out from under the cargo.

[0037] 3. In a container cargo loading and unloading conveying carrier provided by the present invention, the fork arm can extend out of the carrier body and be lifted when in use, thereby ensuring that the cargo in the container is quickly removed and improving the unloading efficiency; when the fork arm is retracted, its height is lower than the highest rolling surface of the second roller, so it can be stored on the carrier body and will not interfere with the sliding of the cargo on the second roller.

[0038] 4. The container cargo loading and unloading conveying carrier provided by the present invention integrates the functions of loading and unloading on the same carrier body, which solves the problem of outdoor container loading and unloading, and can realize the rapid deployment and withdrawal of temporary outdoor warehouses, and has broad application prospects.

[0039] 5. The container cargo loading and unloading method provided by the present invention is easy to operate, reduces the waiting time of container vehicles in queues, and thus greatly shortens the cargo transportation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of an embodiment of a container cargo loading and unloading conveying carrier plate of the present invention.

[0041] Figure 2 It is a schematic diagram of the connection structure between the lifting assembly and the slide rail in an embodiment of a container cargo loading and unloading conveying carrier of the present invention.

[0042] Figure 3 It is a structural schematic diagram of a fork arm extending out of a carrier body in an embodiment of a carrier for loading and unloading containers of the present invention.

[0043] Figure 4 It is a structural schematic diagram of a fork arm extending out of a carrier body and lifting up in an embodiment of a carrier for loading and unloading containers of the present invention.

[0044] The reference numerals are as follows:

[0045] 1-carrier body, 2-installation platform, 3-first roller assembly, 31-first roller, 4-first roller assembly, 41-slide groove, 42-second roller, 5-lifting assembly, 51-movable arm, 52-fork arm, 6-driving assembly, 61-first driving electric cylinder, 62-first driving electric cylinder, 7-ramp, 8-slide rail, 9-connecting rod. DETAILED DESCRIPTION

[0046] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0047] Combination Figure 1 and Figure 2 As shown, this embodiment provides a container cargo loading and unloading conveying carrier, which is located on the mounting platform 2 and generally matches the length of the mounting platform 2. The conveying carrier is assembled from multiple welded steel plates and includes a carrier body 1, a rolling unit, a lifting unit and a driving unit.

[0048] The rolling unit includes a first roller assembly 3 and a second roller assembly 4, wherein the first roller assembly 3 is installed at the bottom of the carrier body 1, and the first roller assembly 3 includes multiple first rollers 31 with the same structure, each first roller 31 is respectively connected to the bottom of the carrier body 1, and the central axes of all the first rollers 31 are respectively parallel, and the first roller assembly 3 is used to drive the carrier body 1 to move on the mounting platform 2.

[0049] The second roller assembly 4 is installed above the carrier body 1 , and includes a plurality of slide grooves 41 and a plurality of second rollers 42 installed in each slide groove 41 .

[0050] A plurality of slide grooves 41 are arranged in parallel, and are respectively installed on the carrier body 1 with the groove openings facing upward; a plurality of second rollers 42 have the same structure and are evenly distributed in the groove openings of the corresponding slide grooves 41. The central axis of each second roller 42 is respectively perpendicular to the groove wall of the corresponding slide groove 41, and the highest rolling surface of each second roller 42 is higher than the groove opening of the corresponding slide groove 41, so as to drive the goods to move on the carrier body 1.

[0051] The first roller 31 and the second roller 42 of this embodiment are both unpowered rollers, which not only reduce the friction of the carrier body 1 and the pallet during movement, improve the transportation efficiency of goods, but also reduce the manufacturing cost. According to the automation requirements, a driving device can be set on the installation platform 2 to drive the carrier body 1 to slide back and forth on the installation platform 2.

[0052] The lifting unit includes a plurality of lifting components 5, each of which includes a movable arm 51 and a fork arm 52; the movable arm 51 is mounted on the carrier body 1 and is slidably connected to the carrier body 1, and the sliding direction of the movable arm 51 is consistent with the moving direction of the carrier body 1. The fork arm 52 is located above the movable arm 51 and is connected to the movable arm 51 through a plurality of connecting rods 9, and the two ends of each connecting rod 9 are respectively hinged to the corresponding movable arm 51 and fork arm 52. The fork arm 52 is mainly used to lift goods, and the height of the fork arm 52 in the initial state is lower than the highest rolling surface of the second roller 42, so as to ensure that it will not interfere with the sliding of the pallet on the second roller 42.

[0053] The lifting component 5 of this embodiment is located on the carrier body 1 between two adjacent slide grooves 41, and the sliding direction of the movable arm 51 in the lifting component 5 is parallel to the length direction of the slide groove 41, that is, one or more lifting components 5 are installed on the carrier body 1 between two adjacent slide grooves 41, thereby ensuring the balance when lifting goods.

[0054] In this embodiment, the movable arm 51 is slidably connected to the carrier body 1 through a sliding assembly; the sliding assembly includes a slide rail 8 and a slider; the slide rail 8 is installed on the carrier body 1, and the slider is installed at the bottom of the movable arm 51 and is located in the slide rail 8, and the width of the slider is adapted to the width of the slide rail 8. Of course, the sliding assembly can also be designed in other ways to ensure the sliding connection between the movable arm 51 and the carrier body 1.

[0055] The driving unit includes a plurality of driving components 6 corresponding one to one with the lifting components 5. Each driving component 6 includes a first driving electric cylinder 61 and a second driving electric cylinder 62. The first driving electric cylinder 61 and the second driving electric cylinder 62 can be selected as servo electric cylinders, or other driving devices that can realize this function can be selected as needed.

[0056] The first driving electric cylinder 61 is installed on the corresponding movable arm 51, and its output end is connected to the end of the corresponding fork arm 52 away from the cargo it lifts, so as to drive the fork arm 52 to rise or fall. In this embodiment, a U-shaped groove is provided on the top of the movable arm 51, and the first driving electric cylinder 61 is installed in the U-shaped groove of the corresponding movable arm 51.

[0057] The second driving electric cylinder 62 is installed on the carrier body 1 , and an output end thereof is connected to the corresponding movable arm 51 , so as to drive the corresponding movable arm 51 to slide relative to the carrier body 1 .

[0058] The upper surface of the carrier body 1 of this embodiment, close to the fork arm 52 for lifting the goods, is also provided with a plurality of slopes 7 inclined toward this end, and the top of each slope 7 is flush with the groove edge of each slide groove 41, and the end of the slide rail 8 close to one end of the slope 7 extends to between two adjacent slopes 7. The design of the slope 7 can facilitate the goods to slide down from the carrier body 1, and also facilitate the carrier body 1 to be smoothly moved out from under the goods.

[0059] The conveying carrier plate according to the present embodiment can be realized by arranging rolling units, lifting components, corresponding slide rails and driving devices on the existing carrier plate as required, thereby improving the unloading function of the existing carrier plate and reducing the manufacturing cost.

[0060] Combination Figures 1 to 4 As shown, this embodiment also provides a container cargo loading and unloading method, comprising the following steps:

[0061] Step【1】Loading

[0062] 1.1. Move the installation platform 2 to the entrance of the container, and make the height of the installation platform 2 flush with the bottom of the container, and then place the container cargo loading and unloading conveying carrier of this embodiment on the installation platform 2, and make the height of each fork arm 52 lower than the height of the highest rolling surface of the second roller 42 ( Figure 1 As shown in the figure, it is ensured that it will not interfere with the sliding of the pallet on the second roller 42. Since the length of the carrier body 1 is adapted to the length of the mounting platform 2, at this time, the end of the carrier body 1 provided with the slope 7 is also located at the entrance of the container. Generally, the length of the carrier body 1 is also adapted to the length of the container.

[0063] 1.2. To improve the efficiency of loading, in this embodiment, multiple pallets are placed on the carrier body 1 in sequence, and the goods are placed on the pallets. After all the pallets are filled with goods, the carrier body 1 is moved to a designated position in the container through the first roller assembly 3.

[0064] 1.3. Move the carrier body 1 in the opposite direction through the first roller assembly 3, and at the same time, slide each pallet off the carrier body 1 in turn through the second roller assembly 4 until the carrier body 1 is moved out of the container and all pallets are moved from the carrier body 1 to the container, thereby completing the loading of all goods.

[0065] During this process, each tray will slide to the end of the carrier body 1 provided with the slope 7 via the corresponding second roller 42. When the carrier body 1 is moved in the reverse direction, the tray will slide down the slope 7, and the carrier body 1 can be smoothly moved out from under the tray.

[0066] Step【2】Unloading

[0067] 2.1. Follow the steps in step 1.1 to prepare for unloading. When unloading begins, move the carrier body 1 to the container entrance through the first roller assembly 3, and then drive the corresponding movable arm 51 to extend out of the carrier body 1 near the container through the second drive electric cylinder 62 ( Figure 3 until it reaches the bottom of the corresponding pallet in the container.

[0068] 2.2. The first driving electric cylinder 61 drives the corresponding fork arm 52 to rise and lift the pallet ( Figure 4 As shown), the tray bottom stops after it is higher than the height of the second roller assembly 4.

[0069] 2.3. The corresponding movable arm 51 is driven again by the second driving electric cylinder 62 until the movable arm 51 drives the corresponding fork arm 52 and the tray thereon to move to the top of the carrier body 1 .

[0070] 2.4. The corresponding fork arm 52 is driven again by the first driving electric cylinder 61 to drive the pallet to descend until the bottom of the pallet contacts the second roller assembly 4 and the fork arm 52 is separated from the bottom of the pallet. At this time, the fork arm 52 is retracted to the initial position.

[0071] 2.5. The pallet slides down from the carrier body 1 through the second roller 41, completing one unloading.

[0072] 2.6. Repeat steps 2.1 to 2.5 according to the quantity of goods until all goods are unloaded.

[0073] In the actual unloading process, all pallets can be moved from the container to the carrier body 1 in the above manner, and then the pallets (carrying goods) can be moved from the carrier body 1 to the designated placement area by a forklift to complete the unloading. Of course, a long conveyor belt can also be connected to the second roller 41, and each pallet can be moved to the designated placement area in turn through the second roller 41 and the conveyor belt.

[0074] The loading and unloading method of this embodiment is easy to operate, can realize the loading and unloading functions of receiving goods, and effectively improves the unloading efficiency. In typical application fields, it can assist other handling equipment to realize the rapid transfer of goods. At the same time, the loading and unloading method reduces the waiting time of container vehicles and can greatly shorten the cargo transfer time. In addition, the loading and unloading method does not require manual intervention during the loading and unloading process, which reduces the labor intensity of personnel while ensuring the safety of goods, and has broad application prospects.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A container cargo loading and unloading conveying carrier, located on a mounting platform (2), characterized in that: It comprises a carrier body (1), a rolling unit, a lifting unit and a driving unit; The rolling unit comprises a first roller assembly (3) and a second roller assembly (4); the first roller assembly (3) is mounted on the bottom of the carrier body (1) and is used to drive the carrier body (1) to move on the mounting platform (2); the second roller assembly (4) is mounted above the carrier body (1) and is used to drive the goods to move on the carrier body (1); The lifting unit comprises a plurality of lifting assemblies (5), each of which comprises a movable arm (51) and a fork arm (52); the movable arm (51) is mounted on the carrier body (1) and is slidably connected to the carrier body (1), and the sliding direction of the movable arm (51) is consistent with the moving direction of the carrier body (1); the fork arm (52) is located above the movable arm (51) and is movably connected to the movable arm (51) and is used for lifting goods; the height of the fork arm (52) in an initial state is lower than the height of the second roller assembly (4); The driving unit comprises a plurality of driving assemblies (6) corresponding one to one with the lifting assemblies (5), and each driving assembly (6) comprises a first driving electric cylinder (61) and a second driving electric cylinder (62); the first driving electric cylinder (61) is mounted on the corresponding movable arm (51), and its output end is connected to the end of the corresponding fork arm (52) away from the lifted goods, so as to drive the fork arm (52) to rise or fall; the second driving electric cylinder (62) is mounted on the carrier body (1), and its output end is connected to the corresponding movable arm (51), so as to drive the corresponding movable arm (51) to slide relative to the carrier body (1).

2. The container cargo loading and unloading conveying carrier according to claim 1, characterized in that: One end of the carrier body (1) is provided with a plurality of slopes (7) inclined toward the end, and the top of each slope (7) is flush with the upper end of the second roller assembly (4), so as to facilitate the goods to slide off the carrier body (1).

3. The container cargo loading and unloading conveying carrier according to claim 2, characterized in that: Each of the movable arms (51) is slidably connected to the carrier body (1) via a sliding assembly; The sliding assembly comprises a slide rail (8) and a slider; the slide rail (8) is mounted on the carrier body (1), and the end portion close to one end of the slope (7) extends between two adjacent slopes (7); the slider is mounted at the bottom of the movable arm (51) and is located inside the slide rail (8), and the width of the slider is adapted to the width of the slide rail (8).

4. The container cargo loading and unloading conveying carrier according to claim 1, characterized in that: The first roller assembly (3) comprises a plurality of first rollers (31) of identical structure, each first roller (31) being respectively connected to the bottom of the carrier body (1), and the central axes of all the first rollers (31) being respectively parallel.

5. The container cargo loading and unloading conveying carrier according to claim 1, characterized in that: The second roller assembly (4) comprises a plurality of slide grooves (41) and a plurality of second rollers (42) installed in each slide groove (41); A plurality of slide grooves (41) are arranged in parallel and are respectively installed on the carrier body (1) with the groove openings facing upwards; a plurality of second rollers (42) have the same structure and are evenly distributed in the groove openings of the corresponding slide grooves (41); the central axis of each second roller (42) is respectively perpendicular to the groove wall of the corresponding slide groove (41), and the highest rolling surface of each second roller (42) is higher than the groove opening of the corresponding slide groove (41); the height of the fork arm (52) in the initial state is lower than the highest rolling surface of the second roller (42); The lifting assembly (5) is located on the carrier body (1) between two adjacent slide grooves (41), and the sliding direction of the movable arm (51) in the lifting assembly (5) is parallel to the length direction of the slide groove (41); The top of each of the slopes (7) is flush with the edge of each chute (41).

6. The container cargo loading and unloading conveying carrier according to claim 1, characterized in that: A U-shaped groove is provided on the top of the movable arm (51), and the first driving electric cylinder (61) is installed in the U-shaped groove of the corresponding movable arm (51).

7. The container cargo loading and unloading conveying carrier according to claim 6, characterized in that: A plurality of connecting rods (9) are respectively provided between the movable arm (51) and the corresponding fork arm (52) for connection, and the two ends of each connecting rod (9) are respectively hinged to the corresponding movable arm (51) and fork arm (52).

8. The container cargo loading and unloading conveying carrier according to claim 7, characterized in that: The first driving electric cylinder (61) and the second driving electric cylinder (62) are both servo electric cylinders.

9. A method for loading and unloading container cargo, characterized in that: The following steps are involved: Step【1】Loading 1.

1. Move the installation platform (2) to the entrance of the container, and make the height of the installation platform (2) flush with the bottom of the container, and then place the container cargo loading and unloading conveying carrier according to any one of claims 1 to 8 on the installation platform (2), and make the height of each fork arm (52) lower than the height of the second roller assembly (4); 1.

2. Place multiple pallets on the carrier body (1) in sequence, and after all the pallets are filled with goods, move the carrier body (1) to a designated position in the container via the first roller assembly (3); 1.

3. The carrier body (1) is moved in the reverse direction by the first roller assembly (3), and at the same time, each pallet is slid down from the carrier body (1) in sequence by the second roller assembly (4), until the carrier body (1) is moved out of the container and all pallets are moved from the carrier body (1) into the container, thereby completing the loading; Step【2】Unloading 2.

1. Move the carrier body (1) to the entrance of the container through the first roller assembly (3), and drive the corresponding movable arm (51) to extend the carrier body (1) through the second driving electric cylinder (62) until it extends under the pallet in the container; 2.

2. The corresponding fork arm (52) is driven by the first driving electric cylinder (61) to rise and lift the pallet until the bottom of the pallet is higher than the height of the second roller assembly (4) and then stops; 2.

3. The corresponding movable arm (51) is driven again by the second driving electric cylinder (62) until the movable arm (51) drives the corresponding fork arm (52) and the tray thereon to move to the top of the carrier body (1); 2.

4. The corresponding fork arm (52) is driven again by the first driving electric cylinder (61) to drive the pallet to descend until the bottom of the pallet contacts the second roller assembly (4) and the fork arm (52) is separated from the bottom of the pallet; 2.

5. The pallet slides down from the carrier body (1) through the second roller assembly (4), completing one unloading operation; 2.

6. Repeat steps 2.1 to 2.5 according to the quantity of goods until all goods are unloaded.

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