A container cargo loading and unloading conveyor plate and loading and unloading method

Abstract

This invention discloses a container cargo loading and unloading conveyor plate and method, mainly solving the technical problem that existing technologies cannot achieve automated loading and unloading. The conveyor plate includes a plate body, a rolling unit, a lifting unit, and a drive unit. The rolling unit includes a first roller assembly and a second roller assembly. The first roller assembly drives the plate body to move on an installation platform; the second roller assembly drives the cargo to move on the plate body. The lifting unit includes multiple lifting components, each including a movable arm and a fork arm. The movable arm is mounted on and slidably connected to the plate body, and the fork arm is located above the movable arm for lifting the cargo. The drive unit includes multiple drive components, each including a first drive cylinder and a second drive cylinder. The first drive cylinder drives the fork arm to rise or fall; the second drive cylinder drives the corresponding movable arm to slide relative to the plate body. This conveyor plate enables rapid loading and unloading.

Description

TECHNICAL FIELD

[0001] The present application relates to a container loading and unloading device, in particular to a container cargo loading and unloading conveying pallet and a loading and unloading method. BACKGROUND

[0002] The traditional loading and unloading method of the container is to manually carry the cargo or to assist in carrying the cargo by means of traditional instruments such as forklifts, cranes, conveyors and the like. When loading, the cargo is first carried to the vicinity of the vehicle to be loaded, and then the carried cargo is carried into the container for loading and stacking. When unloading, the cargo is carried by manual or simple tools on the vehicle, and then carried to the target point by the traditional instruments. Therefore, the efficiency of this loading and unloading method is extremely low.

[0003] In order to improve the loading efficiency, the prior art realizes the overall loading of the cargo by means of an external loading platform (system), that is, the cargo is pre-stacked, and then the stacked cargo is sent to the pallet of the loading platform by the corresponding automatic equipment. When the pallet is full, the cargo is sent into the container body together with the pallet by moving the pallet, so as to realize the rapid loading of the cargo. However, the rapid automatic unloading of the cargo cannot be realized by using this method, because the pallet directly contacts the container body, and the existing pallet cannot enter the bottom of the pallet and lift it, but the cargo has to be carried to the pallet again by manual carrying to complete the unloading. Therefore, the automatic loading and unloading of the existing technology cannot be realized, which affects the transportation efficiency of the logistics. SUMMARY

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

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the present application is as follows:

[0006] A container cargo loading and unloading conveying pallet is located on a mounting platform, and the special feature is that:

[0007] The conveying pallet comprises a pallet body, a rolling unit, a lifting unit and a driving unit;

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

[0009] The lifting unit comprises a plurality of lifting assemblies, each of which comprises a movable arm and a fork arm; the movable arm is mounted on the carrier plate body and is in sliding connection with the carrier plate body, and the sliding direction of the movable arm is consistent with the moving direction of the carrier plate body; the fork arm is located above the movable arm and is in movable connection with the movable arm, and is used for lifting 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 comprises a plurality of driving assemblies corresponding to the lifting assemblies, each of which comprises a first driving electric cylinder and a second driving electric cylinder; the first driving electric cylinder is mounted on the corresponding movable arm, and the output end thereof is connected with one end of the corresponding fork arm away from the fork arm for lifting goods, and is used for driving the fork arm to rise or fall; the second driving electric cylinder is mounted on the carrier plate body, and the output end thereof is connected with the corresponding movable arm, and is used for driving the corresponding movable arm to slide relative to the carrier plate body.

[0011] Further, one end of the carrier plate body is provided with a plurality of slopes inclined towards the end, and the top of each slope is flush with the upper end of the second roller assembly, so as to facilitate the sliding of goods from the carrier plate body.

[0012] Further, each of the movable arms is in sliding connection with the carrier plate body through a sliding assembly;

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

[0014] Further, the first roller assembly comprises a plurality of first rollers with the same structure, each of which is connected with the bottom of the carrier plate body, and the center axes of all the first rollers are parallel.

[0015] Further, the second roller assembly comprises a plurality of sliding grooves and a plurality of second rollers mounted in each sliding groove;

[0016] The plurality of sliding grooves are arranged in parallel and are mounted on the carrier plate body with the groove opening upward; the plurality of second rollers are the same in structure and are uniformly distributed in the groove opening of the corresponding sliding groove; the center axis of each second roller is perpendicular to the groove wall of the corresponding sliding groove, and the highest rolling surface of each second roller is higher than the groove opening of the corresponding sliding groove; the height of the fork arm in the initial state is lower than the highest rolling surface of the second roller;

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

[0018] The top of each slope is flush with the groove wall of each sliding groove.

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

[0020] Furthermore, the movable arm and the corresponding fork arm are respectively connected by multiple links, and the two ends of each link are respectively hinged to the corresponding movable arm and fork arm.

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

[0022] This invention also provides a method for loading and unloading container cargo, characterized by 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 level with the bottom of the container. Then place the container cargo loading and unloading conveyor plate on the installation platform, ensuring that the height of each fork arm is lower than the height of the second roller assembly.

[0025] 1.2 Place multiple pallets sequentially onto the carrier body. After all pallets are filled with goods, move the carrier body to the designated position inside the container via the first roller assembly.

[0026] 1.3 The first roller assembly moves the pallet body in the opposite direction, while the second roller assembly slides each pallet off the pallet body in sequence until the pallet body is removed from the container and all pallets are moved from the pallet body into the container, thus completing the loading.

[0027] Step [2] Unloading

[0028] 2.1. Move the pallet body to the container entrance via the first roller assembly, and drive the corresponding movable arm to extend the pallet body via the second drive electric cylinder until it extends under the pallet inside the container.

[0029] 2.2 The corresponding fork arm is driven by the first drive electric cylinder 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. Drive the corresponding movable arm again via the second drive electric cylinder until the movable arm moves the corresponding fork arm and the pallet on it to the top of the carrier plate body;

[0031] 2.4. The corresponding fork arm is driven again by the first drive electric cylinder, causing it to lower the pallet until the bottom of the pallet contacts the second roller assembly and the fork arm separates from the bottom of the pallet.

[0032] 2.5 The pallet slides off the carrier plate body via the second roller assembly, completing one unloading operation;

[0033] 2.6. Depending on the quantity of goods, repeat steps 2.1 to 2.5 until all goods have been unloaded.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

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

[0036] 2. In the container cargo loading and unloading conveyor provided by the present invention, the carrier body is provided with multiple ramps 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 the container cargo loading and unloading conveyor provided by the present invention, when the fork arm is in use, it can extend out of the carrier body and lift it up, thereby ensuring that the cargo inside the container is quickly moved out and improving 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 conveyor provided by this invention integrates loading and unloading functions on the same conveyor body, solving the problem of loading and unloading containers in the field, enabling the rapid deployment and dismantling of temporary field 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 queuing time of container vehicles, and thus greatly reduces the cargo transfer time. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of an embodiment of a container cargo loading and unloading conveyor plate of the present invention.

[0041] Figure 2 This is a schematic diagram of the connection structure between the lifting component and the slide rail in an embodiment of the container cargo loading and unloading conveyor plate of the present invention.

[0042] Figure 3 This is a schematic diagram of the structure of a container cargo loading and unloading conveyor plate according to an embodiment of the present invention, showing the fork arm extending out of the plate body.

[0043] Figure 4 This is a schematic diagram of the structure of a container cargo loading and unloading conveyor plate according to an embodiment of the present invention, showing the fork arm extending out of the plate body and lifting it up.

[0044] The attached figures are labeled as follows:

[0045] 1-Carrier plate body, 2-Mounting platform, 3-First roller assembly, 31-First roller, 4-First roller assembly, 41-Slide groove, 42-Second roller, 5-Lifting assembly, 51-Moving arm, 52-Fork arm, 6-Drive assembly, 61-First drive electric cylinder, 62-First drive electric cylinder, 7-Incline, 8-Slide rail, 9-Connecting rod. Detailed Implementation

[0046] To make the objectives, advantages, and features of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art should understand that these embodiments are merely 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 conveyor plate, located on the installation platform 2, and generally adapted to the length of the installation platform 2. The conveyor plate is assembled from multiple welded steel plates and includes a plate body 1, a rolling unit, a lifting unit, and a drive unit.

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

[0049] The second roller assembly 4 is mounted above the carrier plate body 1, and includes multiple grooves 41 and multiple second rollers 42 installed in each groove 41.

[0050] Multiple parallel chutes 41 are installed on the carrier plate body 1 with their openings facing upwards; multiple identical second rollers 42 are evenly distributed within the openings of their corresponding chutes 41. The central axis of each second roller 42 is perpendicular to the wall of its corresponding chute 41, and the highest rolling surface of each second roller 42 is higher than the opening of its corresponding chute 41, used to move goods on the carrier plate body 1.

[0051] In this embodiment, both the first roller 31 and the second roller 42 are unpowered rollers, which not only reduces the friction between the carrier plate body 1 and the pallet during movement and improves the conveying efficiency of goods, but also reduces manufacturing costs. Furthermore, according to automation requirements, a drive device can be installed on the mounting platform 2 to drive the carrier plate body 1 to slide back and forth on the mounting platform 2.

[0052] The lifting unit includes multiple lifting components 5, each of which includes a movable arm 51 and a fork arm 52. The movable arm 51 is mounted on and 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 via multiple connecting rods 9, with each connecting rod 9 hinged at both ends to the corresponding movable arm 51 and fork arm 52. The fork arm 52 is mainly used to lift goods. In its initial state, the height of the fork arm 52 is lower than the highest rolling surface of the second roller 42, thus ensuring that it does not interfere with the sliding of the pallet on the second roller 42.

[0053] In this embodiment, the lifting component 5 is located on the carrier plate 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 plate 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 plate body 1 via a sliding assembly; the sliding assembly includes a slide rail 8 and a slider; the slide rail 8 is mounted on the carrier plate body 1, and the slider is mounted on the bottom of the movable arm 51 and located within the slide rail 8, with the width of the slider matching the width of the slide rail 8. Of course, the sliding assembly can also be designed in other ways to ensure the slidable connection between the movable arm 51 and the carrier plate body 1.

[0055] The drive unit includes multiple drive components 6 that correspond one-to-one with the lifting component 5. Each drive component 6 includes a first drive cylinder 61 and a second drive cylinder 62. The first drive cylinder 61 and the second drive cylinder 62 can be selected as servo electric cylinders, or other drive devices that can achieve this function can be selected as needed.

[0056] The first drive 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 end that it is lifting the goods, for driving the fork arm 52 to rise or fall. In this embodiment, the top of the movable arm 51 is provided with a U-shaped groove, and the first drive electric cylinder 61 is installed in the U-shaped groove of the corresponding movable arm 51.

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

[0058] In this embodiment, the upper surface of the carrier plate body 1 near the end of the fork arm 52 that supports the goods is also provided with multiple ramps 7 that are inclined toward that end, and the top of each ramp 7 is flush with the groove edge of each slide 41. The end of the slide rail 8 near the ramp 7 extends to the space between two adjacent ramps 7. The design of the ramps 7 makes it easy for the goods to slide off the carrier plate body 1, and also makes it easy for the carrier plate body 1 to be moved out smoothly from under the goods.

[0059] Based on the conveyor plate of this embodiment, the rolling unit, lifting component and corresponding slide rail and drive device can be arranged on the existing plate as needed, thereby improving the unloading function of the existing plate and reducing manufacturing costs.

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

[0061] Step [1] Loading

[0062] 1.1 Move the installation platform 2 to the entrance of the container, making the height of the installation platform 2 flush with the bottom of the container. Then place the container cargo loading and unloading conveyor plate of this embodiment on the installation platform 2, ensuring that the height of each fork arm 52 is lower than the height of the highest rolling surface of the second roller 42. Figure 1 As shown), this ensures that it will not interfere with the sliding of the pallet on the second roller 42. Since the length of the pallet body 1 is adapted to the length of the mounting platform 2, the end of the pallet body 1 with the ramp 7 is also located at the entrance of the container. Generally, the length of the pallet body 1 is also adapted to the length of the container.

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

[0064] 1.3 The first roller assembly 3 moves the carrier body 1 in the reverse direction, and at the same time, each pallet slides off the carrier body 1 in sequence through the second roller assembly 4 until the carrier body 1 is removed from the container and all pallets are moved from the carrier body 1 into the container, thereby completing the loading of all goods.

[0065] During this process, each pallet will slide down the corresponding second roller 42 to the end of the carrier plate body 1 where the ramp 7 is located. When the carrier plate body 1 is moved in the opposite direction, the pallet will slide down the ramp 7, and the carrier plate body 1 can be smoothly removed from under the pallet.

[0066] Step [2] Unloading

[0067] 2.1 Following the steps in 1.1, complete the pre-unloading preparations. When unloading begins, move the pallet body 1 to the container entrance via the first roller assembly 3, and then drive the corresponding movable arm 51 to extend from the end of the pallet body 1 near the container via the second drive cylinder 62. Figure 3 (As shown), until it reaches the bottom of the corresponding pallet inside the container.

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

[0069] 2.3. The corresponding movable arm 51 is driven again by the second drive electric cylinder 62 until the movable arm 51 drives the corresponding fork arm 52 and the pallet on it to move above the carrier body 1.

[0070] 2.4. The first drive cylinder 61 drives the corresponding fork arm 52 again, causing it to lower the pallet until the bottom of the pallet contacts the second roller assembly 4 and the fork arm 52 separates from the bottom of the pallet. At this time, the fork arm 52 returns to its initial position.

[0071] 2.5 The pallet slides off the carrier plate body 1 via the second roller 41, completing one unloading operation.

[0072] 2.6. Depending on the quantity of goods, repeat steps 2.1 to 2.5 until all goods have been unloaded.

[0073] In the actual unloading process, all pallets can be moved from inside the container to the carrier body 1 in the same way as described above, and then a forklift can be used to move the pallets (carrying goods) from the carrier body 1 to the designated placement area to complete the unloading. Alternatively, a long conveyor belt can be connected to the second roller 41, and each pallet can be moved to the designated placement area in sequence via the second roller 41 and the conveyor belt.

[0074] The loading and unloading method described in this embodiment is easy to operate, enabling loading and unloading of goods onto and off trucks, and effectively improving unloading efficiency. In typical application areas, it can assist other handling equipment in achieving rapid cargo transfer. Simultaneously, this method reduces container vehicle queuing time, significantly shortening cargo transfer time. Furthermore, this method requires no manual intervention during loading and unloading, reducing labor intensity while ensuring cargo safety, 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, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions 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 platform located on a mounting platform (2), characterized in that: it comprises a platform 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 installed at the bottom of the platform body (1) and used to drive the platform body (1) to move on the mounting platform (2) ; the second roller assembly (4) is installed above the platform body (1) and used to drive the cargo to move on the platform body (1) ; one end of the platform 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 cargo to slide off the platform 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 installed on the platform body (1) and slidably connected with the platform body (1), and the sliding direction of the movable arm (51) is consistent with the moving direction of the platform body (1) ; the fork arm (52) is located above the movable arm (51) and movably connected with the movable arm (51), and used to lift the cargo; the height of the fork arm (52) in the initial state is lower than the height of the second roller assembly (4) ; the driving unit comprises a plurality of driving assemblies (6) corresponding to the lifting assemblies (5), each of which comprises a first driving electric cylinder (61) and a second driving electric cylinder (62) ; the first driving electric cylinder (61) is installed on the corresponding movable arm (51), and its output end is connected with the end of the corresponding fork arm (52) away from the cargo, so as to drive the fork arm (52) to rise or fall; the second driving electric cylinder (62) is installed on the platform body (1), and its output end is connected with the corresponding movable arm (51), so as to drive the corresponding movable arm (51) to slide relative to the platform body (1) ; the second roller assembly (4) comprises a plurality of sliding grooves (41) and a plurality of second rollers (42) installed in each sliding groove (41) ; the plurality of sliding grooves (41) are arranged in parallel, and each is installed on the platform body (1) with the groove opening upward; the plurality of second rollers (42) are identical in structure and arranged in the groove openings of the corresponding sliding grooves (41) ; the central axis of each second roller (42) is perpendicular to the groove wall of the corresponding sliding groove (41), and the highest rolling surface of each second roller (42) is higher than the groove opening of the corresponding sliding 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 platform body (1) between two adjacent sliding grooves (41), and the sliding direction of the movable arm (51) in the lifting assembly (5) is parallel to the length direction of the sliding groove (41) ; the top of each slope (7) is flush with the groove wall of each sliding groove (41). 2.The container cargo loading and unloading conveying platform according to claim 1, characterized in that: ​ ​ ​ ​ ​ Each of the movable arms (51) is slidably connected with the carrier plate body (1) through a sliding assembly; The sliding assembly comprises a sliding rail (8) and a sliding block; the sliding rail (8) is installed on the carrier plate body (1) and extends to the space between two adjacent slopes (7) at the end of the slope (7); the sliding block is installed at the bottom of the movable arm (51) and located in the sliding rail (8), and the width of the sliding block is matched with the width of the sliding rail (8).

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

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

5. The container cargo loading and unloading conveying carrier plate according to claim 4, characterized in that: A plurality of connecting rods (9) are respectively arranged between the movable arm (51) and the corresponding fork arm (52), and the two ends of each connecting rod (9) are hingedly connected with the movable arm (51) and the fork arm (52).

6. The container cargo loading and unloading conveying carrier plate according to claim 5, characterized in that: The first driving electric cylinder (61) and the second driving electric cylinder (62) are both servo electric cylinders.

7. A method of handling a container load, characterized by, The method comprises the following steps: 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, then place the container cargo loading and unloading conveying carrier plate according to any one of claims 1 to 6 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 a plurality of pallets on the carrier plate body (1) in sequence, and after all the pallets are filled with goods, move the carrier plate body (1) to the designated position in the container through the first roller assembly (3); 1.

3. Move the carrier plate body (1) in the reverse direction through the first roller assembly (3), and at the same time, slide each pallet from the carrier plate body (1) through the second roller assembly (4) in sequence until the carrier plate body (1) moves out of the container and all the pallets are moved from the carrier plate body (1) into the container, thereby completing the loading; Step 2: unloading 2.

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

2. Drive the corresponding fork arm (52) to rise and lift the pallet through the first driving electric cylinder (61) until the bottom of the pallet is higher than the height of the second roller assembly (4). 2.

3. Drive the corresponding movable arm (51) again through the second drive electric cylinder (62) until the movable arm (51) drives the corresponding fork arm (52) and the pallet on it to move above the carrier plate body (1); 2.

4. The corresponding fork arm (52) is driven again by the first drive electric cylinder (61) to make it lower the pallet until the bottom of the pallet contacts the second roller assembly (4) and the fork arm (52) separates from the bottom of the pallet. 2.5 The pallet slides off the carrier plate body (1) via the second roller assembly (4) to complete one unloading operation; 2.

6. Depending on the quantity of goods, repeat steps 2.1 to 2.5 until all goods have been unloaded.

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