An active draw-off plate type automatic loading system

Abstract

This invention proposes an active pull-out type automatic loading system, belonging to the fields of conveying, logistics machinery, and loading. It addresses the problems of existing automatic loading systems that cannot actively transport goods to the front of the truck bed, suffer from significant unloading impact, and cannot achieve partial loading. It includes a posture adjustment device connected to the loading platform for adjusting the platform's position; a chain-driven pull-out plate, with its end away from the truck bed connected to the drive chain of the loading platform; wherein the chain-driven pull-out plate is equipped with a transport chain for conveying goods, and the chain-driven pull-out plate can move parallel to the loading platform. The conveying of goods by the transport chain and the withdrawal of the chain-driven pull-out plate are synchronized, ensuring that the goods remain stationary relative to the truck bed and fall into the truck bed.

Description

Technical Field

[0001] This invention belongs to the field of conveying, logistics machinery and loading, and in particular relates to an active tray-pulling automatic loading system. Background Technology

[0002] With the development of automated loading technology, whole-vehicle loading technology has gradually become an important part of automated loading technology. Its application has greatly improved cargo loading efficiency. The use of automated and intelligent sensing equipment not only improves loading speed, but also enables precise matching of goods, maximizes the use of cargo space, and promotes the rapid development of the logistics industry.

[0003] Existing full-truckload loading methods face several pressing issues: First, the flat-panel method relies on a rear-end blocking device to keep goods inside the truck bed, meaning that goods cannot be loaded to the front of the truck bed when not fully loaded, wasting valuable space. Second, it requires high levels of neatness and stability in cargo stacking, as stacking is prone to tipping over during loading. Since the full-truckload loading machine needs to load the entire truckload of goods into the truck bed at once, heavy loads can put significant pressure on the hydraulic system and mechanical mechanisms, potentially damaging the machine's structure and affecting its reliability and lifespan. Third, previous equipment could only push all goods on the pallets into the truck bed, failing to support partial loading.

[0004] In summary, an active tray-pulling type automatic loading system is proposed. Summary of the Invention

[0005] In view of this, the present invention aims to propose an active tray-type automatic loading system to solve the problems of existing automatic loading systems being unable to actively transport goods to the front of the carriage, having large unloading impact, and being unable to achieve partial loading.

[0006] To achieve the above objectives, the present invention adopts the following technical solution to provide an active tray-pulling type automatic loading system, comprising: An attitude adjustment device, connected to the loading platform, is used to adjust the position of the loading platform; The chain-driven pull plate has its end furthest from the cargo box connected to the drive chain of the loading platform; The chain-driven pull plate is equipped with a transport chain for conveying goods, and the chain-driven pull plate can move parallel to the loading platform. The transport chain conveys the goods and the chain-driven pull plate is pulled out synchronously, so that the goods remain stationary relative to the carriage and fall into the carriage.

[0007] Furthermore, the aforementioned attitude adjustment device includes a lateral adjustment device and a base. The lateral adjustment device is connected to the equipment frame of the loading platform, and the lateral adjustment device is slidably connected to the base, with the sliding direction perpendicular to the equipment frame.

[0008] Furthermore, a height adjustment device is provided between the lateral adjustment device and the equipment frame.

[0009] Furthermore, a rotating device is provided between the height adjustment device and the equipment frame.

[0010] Furthermore, the chain-driven pull plate includes a second transmission part, at least one first transmission part, and a tensioning mechanism for connection, and both the first and second transmission parts are provided with a transport chain.

[0011] Furthermore, the second transmission part is tilted downward relative to the first transmission part to reduce the height difference between the cargo and the floor of the carriage when the cargo is unloaded.

[0012] Furthermore, the tensioning mechanism includes multiple connecting plates connected to the second transmission part and the first transmission part, and each of the multiple connecting plates is provided with two shafts, on which chain wheels are provided and connected to the transport chain.

[0013] Furthermore, an auxiliary chain connects the two shafts.

[0014] Furthermore, tensioning push plates are vertically provided at both ends of the connecting plate. The tensioning push plates are connected to the first transmission part and the second transmission part through tensioning bolts.

[0015] Furthermore, the loading platform also includes a power chain tensioning device. One end of the power chain tensioning device is equipped with a hydraulic cylinder that is fixedly connected to the equipment frame, and the other end is equipped with a bracket. The bracket is equipped with a redirecting sprocket connected to the drive chain.

[0016] Beneficial effects: This invention utilizes a transport chain mounted on a chain-driven pallet to actively transport goods to the front of the truck bed, solving the problem of wasted space at the front of the truck bed when not fully loaded. During unloading, the transport chain conveys goods into the truck bed at a set speed, while the pallet body retracts synchronously outward at the same speed. This ensures that the absolute velocity of the goods relative to the truck bed floor is zero, and the goods remain stationary, allowing them to fall smoothly from under the pallet to the truck bed floor. The entire process requires no obstruction from the rear baffle, resulting in no impact or stacking. Furthermore, the conveying length can be precisely controlled, enabling partial or batch loading as needed, offering flexible operation. This equipment is suitable for loading palletized materials into a single truck. After goods leave the warehouse, a conveyor or forklift can place a truckload of materials into the loading area on the pallet. The pallet assembly automatically prepares the materials, and once prepared, the pallet and goods are simultaneously fed into the truck bed. Unloading is completed and the truck departs quickly, significantly improving loading efficiency.

[0017] This invention utilizes a posture adjustment device to achieve lateral movement, height adjustment, and angle rotation of the loading platform, enabling rapid adaptation to different vehicle models and parking postures, ensuring precise insertion of the pallet into the cargo compartment. The second transmission section is tilted downwards relative to the first transmission section, effectively reducing the height difference between the cargo and the cargo compartment floor during unloading, thus minimizing impact from falls. Furthermore, the tensioning mechanism and power chain tensioning device ensure stable transmission between the transport chain and the drive chain, resulting in smooth and reliable overall operation. By employing multiple active conveyor lines in conjunction with roller conveyors between them, it can essentially cover loading operations for pallets of various sizes, offering wide applicability and saving time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure described in this invention; Figure 2 This is a side view of the chain-driven pull plate described in this invention; Figure 3 This is a top view of the chain-driven pull plate described in this invention; Figure 4 This is a schematic diagram of the second transmission part of the present invention; Figure 5 This is a schematic diagram showing the end direction of the chain-driven pull plate described in this invention; Figure 6 This is a schematic diagram of the tensioning mechanism structure described in this invention; Figure 7 This is a schematic diagram of the bottom structure of the loading platform described in this invention; Figure 8 This is a schematic diagram of the loading platform structure described in this invention; Figure 9 This is a schematic diagram of the power chain tensioning device described in this invention; Figure 10 This is a schematic diagram of the structure of the first attitude adjustment device of the present invention; Figure 11 This is a schematic diagram of the second type of attitude adjustment device of the present invention.

[0019] In the diagram: 1. Chain-driven pull plate; 2. Loading platform; 3. Attitude adjustment device; 101. First transmission part; 1011. Chain conveying mechanism; 1012. Conveying drive mechanism; 1014. Traction box; 10111. Pull plate frame; 10111. Second transmission part; 102. Transition conveying mechanism; 1021. Transition support mechanism; 1022. Distance sensor; 1023. Tensioning mechanism; 1031. Connecting plate; 1032. Tensioning bolt; 1033. Tensioning push plate; 1034. Shaft; 1. Auxiliary chain. 035, Chain wheel 10113, Roller 104, Conveyor chain 10112, Equipment frame 201, Plate drawer drive mechanism 202, Drive motor 2021, Guide sprocket 2022, Drive chain 2023, Power chain tensioning device 203, Hydraulic cylinder 2031, Redirecting sprocket 2032, Support 2033, Guide roller 204, Transition chain conveyor 205, Lateral adjustment device 301, Height adjustment device 302, Rotating device 303, Base 304. Detailed Implementation

[0020] Referring to the accompanying drawings, this embodiment provides an active pull-out automatic loading system, comprising: the loading system mainly consists of a chain-driven pull-out plate 1, a loading platform 2, and a posture adjustment device 3. The chain-driven pull-out plate 1 is located above the loading platform 2 for carrying and transporting goods. The loading platform 2 is equipped with a pull-out plate drive mechanism 202, which is responsible for extending or retracting the powered pull-out plate. In this example, the power system is driven by an electric motor.

[0021] The power-driven pallet 1 mainly consists of a first transmission section 101 responsible for conveying and a second transmission section 102 responsible for unloading. In this design, the main structure of the first transmission section 101 includes a chain conveyor mechanism 1011 mounted on the pallet frame 10111. The chain conveyor mechanism 1011 is used to convey goods to a suitable position on the first transmission section 101 during loading and to continue conveying goods placed on the first transmission section 101 out of the first transmission section 101 during unloading. A conveyor drive mechanism 1012 is provided on the first transmission section 101, which drives the chain conveyor mechanism 1011. The conveyor drive mechanism 1012 mainly relies on an electric motor or hydraulic motor as its power source. The chain conveyor mechanism 1011 consists of the pallet frame 10111, the transport chain 10112, and the chain wheel 10113.

[0022] When unloading goods into the carriage, the pull-out drive mechanism 202 and the conveying drive mechanism 1012 are activated in coordination. The conveying drive mechanism 1012 drives the goods on the chain conveyor mechanism 1011 to be conveyed to the loading area relative to the first transmission part 101. At the same time, the pull-out drive mechanism 202 simultaneously drives the traction chain power pull-out plate 1 to move in the opposite direction. The two move at the same speed but in opposite directions. At this time, the goods are stationary relative to the carriage, and the chain power pull-out plate 1 makes a withdrawal action from the carriage. The goods on the pull-out plate assembly fall into the carriage one by one.

[0023] The chain-driven pull plate 1 includes a second transmission part 102, at least one first transmission part 101, and a tensioning mechanism 103 for connection. Both the first transmission part 101 and the second transmission part 102 are provided with a transport chain 10112. The first transmission part 101 is longer and flat, while the second transmission part 102 is shorter and inclined downward, which facilitates reducing the height difference between the goods and the floor of the carriage during unloading and reducing the impact when the goods fall.

[0024] The first transmission part 101 and the second transmission part 102 are connected by a tensioning mechanism 103. The tensioning mechanism 103 can be used to tension the chain mechanism inside the first transmission part 101 and the second transmission part 102 at the same time. The connecting plate 1031 has a plurality of parallel elongated holes. When the tensioning bolt 1032 is tightened, it can push the tensioning push plate 1033 to slide along the main frame or the transition frame drawer frame 10111, thereby sliding the connecting plate 1031. The movement of the connecting plate 1031 causes the driven axis to move away from the driving sprocket, thereby achieving the tensioning of the conveyor chain.

[0025] According to some embodiments of this application, optionally, a distance sensor 1023 is connected to the front end of the second transmission part 102 of the power pull plate 1 to detect the length of the pull plate extending into the carriage.

[0026] The second transmission part 102 also includes a transition conveying mechanism 1021 and a transition support mechanism 1022.

[0027] The transition conveying mechanism 1021 is provided with a chain and a chain wheel, and the transition support mechanism 1022 supports the transition conveying mechanism 1021. The transition conveying mechanism 1021 is inclined downward relative to the first transmission part 101.

[0028] The side frame is equipped with distance sensors and anti-collision buffer devices to prevent the pull-out panel from colliding with the carriage.

[0029] When the first transmission part 101 is loaded, the photoelectric detector detects that there is goods and then the conveying drive mechanism 1012 starts to move the goods forward.

[0030] Rollers 104 are evenly installed below the chain-driven pull plate 1 to reduce the movement resistance of the pull plate on the installation platform and in the carriage.

[0031] The lower part of the drawer frame 10111 of the first transmission part 101 away from the carriage is provided with a traction box 1014, and the lower part of the traction box 1014 is fixedly connected to the drive chain 2023 of the loading platform 2.

[0032] The loading platform 2 includes an equipment frame 201 for carrying goods, with a posture adjustment device 3 connected below. A pull-out plate drive mechanism 202 is installed at an appropriate position on the equipment frame 201 to provide power to the chain-driven pull-out plate 1, ensuring its smooth operation. Guide rollers 204 are provided on both sides of the frame to limit the direction of travel of the pull-out plate.

[0033] Two sets of power chain tensioning devices 203 are provided on the loading platform 2 near the end of the vehicle. The power chain is tensioned by using a hydraulic cylinder 2031 to drive the end redirecting sprocket 2032 to move in the slide on the loading platform 2.

[0034] Guide sprockets 2022 are provided on both sides of the loading platform 2 near the end of the vehicle. The guide sprockets 2022 are used to guide the chain-driven pull plate 1 when it extends or retracts.

[0035] The equipment frame 201 is also equipped with a transition chain conveyor 205 at the end away from the carriage, which can temporarily store the goods conveyed by the front conveyor to increase the amount of goods that can be temporarily stored, and speed up and stabilize the loading of goods onto the drawer.

[0036] Before loading, the equipment is connected to the front-end conveying equipment, and the conveyor on the chain-driven pull plate 1 is started to gradually transport the goods to the appropriate position on the pull plate.

[0037] During loading, the vehicle or carriage is parked within the designated area. The lateral adjustment device 301 is moved on the base 304 to move the entire equipment laterally. After this action is completed, the rotation device 303 is controlled to rotate the equipment until it is aligned with the vehicle. Then, the height adjustment device 302 is adjusted to align the upper surface of the loading platform 2 with the floor of the carriage. At this point, the pre-loading preparations are complete. Both the lateral adjustment device 301 and the height adjustment device 302 are driven by hydraulic cylinders. The rotation device 303 can be a hydraulic cylinder directly connected to the equipment frame 201 to change the direction of the equipment frame 201, or it can be a hydraulic motor connected to the bottom of the equipment frame 201 to drive the equipment frame 201 to rotate.

[0038] The drive motor 2021 in the pull plate drive mechanism 202 on the loading platform 2 is started, and the chain-driven pull plate 1 is extended. Under the action of the guide roller 204, it gradually extends into the carriage until the sensor installed at the end of the pull plate detects that it has traveled to the designated position and stops.

[0039] During unloading, the pull-plate drive motor 2021 and the pull-plate drive mechanism 2021 motor start simultaneously. The effect is that the drive chain 2023 on the pull plate conveys forward at the same speed as the chain-driven pull plate 1 pulls backward. At this time, the goods are stationary relative to the carriage. The chain-driven pull plate 1 is gradually pulled out of the carriage, and the goods above fall down the pull-plate ramp in sequence. When the carriage is full or unloading needs to be stopped, the motor on the conveyor drive 1012 on the chain-driven pull plate 1 can be stopped. Then the chain-driven pull plate 1 will move backward with the remaining goods until it stops at the designated position on the loading platform 2, completing one loading cycle.

[0040] Preferably, to ensure that the first sprocket chain mechanism remains tensioned and operates stably and reliably, in some preferred embodiments, one end of the transition chain plate is slidably connected to one end of the support chain plate, and a tensioning mechanism 103 for tensioning the first sprocket chain mechanism is provided between the transition chain plate and the support chain plate. By providing the tensioning mechanism 103 for the first sprocket chain mechanism between the transition chain plate and the support chain plate, the tension of the first sprocket chain mechanism can be controlled, ensuring that the first sprocket chain mechanism provides stable and reliable transport of goods.

[0041] Preferably, the transport tray consists of several sets of powered chain conveyor belts and several unpowered roller conveyor belts arranged from the front end to the rear end. The powered chain conveyor belts are arranged on both sides of the roller conveyor belts. The spacing between the multiple powered conveyor belts and the width of the roller conveyor belts are arranged through multiple comparisons to suit various pallet transport methods, ensuring that at least two powered belts can drive the pallet transport. The legs in the middle of the pallet can be supported by the roller conveyor belts.

[0042] Preferably, to ensure the extension and retraction of the drawer, the drawer assembly further includes: a frame and a power transmission belt motor mounted on the frame. A traction box is located below the frame, connected to the power assembly on the loading platform 2 via a chain, to realize the extension and retraction of the drawer.

[0043] Preferably, in order to ensure the direction of the extension and retraction of the pull plate, a composite guide wheel is installed on the traction box 1014 under the frame. The traction chain of the pull plate drive mechanism always moves along the guide direction to ensure that the pull plate can be stably and reliably extended into the loading vehicle, avoiding cargo loss or equipment impact damage caused by tilting.

[0044] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. An active draw-off palletized automatic loading system, characterized in that, include: The chain-driven pull plate (1) is connected at one end away from the carriage to the drive chain (2023) of the loading platform (2); The attitude adjustment device (3) is connected to the loading platform (2) and is used to adjust the position of the loading platform (2); The chain-driven pull plate (1) is provided with a transport chain (10112) for transporting goods, and the chain-driven pull plate (1) can move parallel to the loading platform (2). The transport chain (10112) transports goods in sync with the chain power pull plate (1) withdrawing, so that the goods remain stationary relative to the carriage and fall into the carriage.

2. The active draw-off panel type automatic loading system according to claim 1, characterized in that: The chain-driven pull plate (1) includes a second transmission part (102), at least one first transmission part (101), and a tensioning mechanism (103) for connection. Both the first transmission part (101) and the second transmission part (102) are provided with transport chains (10112).

3. The active draw-off panel type automatic loading system according to claim 2, characterized in that: The second transmission part (102) is inclined downward relative to the first transmission part (101) to reduce the height difference between the cargo and the floor of the carriage when the cargo is unloaded.

4. The automatic loading system of active tray-pulling type according to claim 3, characterized in that: The tensioning mechanism (103) includes multiple connecting plates (1031) connected to the second transmission part (102) and the first transmission part (101). The connecting plates (1031) are provided with two shafts (1034), and the shafts (1034) are provided with chain wheels (10113) connected to the transport chain (10112).

5. The automatic loading system of active tray-pulling type according to claim 4, characterized in that: An auxiliary chain (1035) is connected between the two shafts (1034).

6. The automatic loading system of active tray removal type according to claim 5, characterized in that: The connecting plate (1031) has tensioning push plates (1033) vertically provided at both ends. The tensioning push plates (1033) are connected to the first transmission part (101) and the second transmission part (102) through tensioning bolts (1032).

7. The automatic loading system of active tray-pulling type according to claim 6, characterized in that: The loading platform (2) includes an equipment frame (201), a pull-out drive system (202), and a power chain tensioning device (203). The pull-out drive system (202) is located at one end of the equipment frame (201) away from the carriage, and the power chain tensioning device (203) is located at the other end of the equipment frame (201).

8. The automatic loading system of active tray-pulling type according to claim 7, characterized in that: The power chain tensioning device (203) has a hydraulic cylinder (2031) at one end that is fixedly connected to the equipment frame (201), and a bracket (2033) at the other end. The bracket (2033) has a redirecting sprocket (2032) connected to the drive chain (2023).

9. The automatic loading system of active tray-pulling type according to claim 8, characterized in that: The attitude adjustment device (3) includes a lateral adjustment device (301) and a base (304). The lateral adjustment device (301) is connected to the equipment frame (201) of the loading platform (2). The lateral adjustment device (301) is slidably connected to the base (304), and the sliding direction is perpendicular to the equipment frame (201). A height adjustment device (302) is provided between the lateral adjustment device (301) and the equipment frame (201).

10. The automatic loading system of active tray-pulling type according to claim 9, characterized in that: A rotating device (303) is provided between the height adjustment device (302) and the equipment frame (201).

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