Tobacco clamp unloading system of tobacco curing barn

Abstract

The invention relates to a tobacco clamp unloading system for a tobacco curing barn, which solves the problems of high labor intensity and low operation efficiency during existing mature tobacco leaf unloading, and adopts the following technical measures: tobacco clamps for clamping cured tobacco leaves are unloaded from a shelf in a multi-layer manner through a carrying vehicle with a multi-layer tobacco receiving rod frame, and the carried objects are carried to a door of the tobacco curing barn through the carrying vehicle; the tobacco clamps and the tobacco leaves are integrally connected at a time through the transfer trolley with the multiple layers of bearing frames, then the tobacco leaves are transferred to the target position, and the tobacco clamps and the tobacco leaves are unloaded to the bearing structure located at the low position through movement of the driving belt so that the tobacco clamps and the tobacco leaves can be collected and taken conveniently. And after the driving belt moves reversely, the empty bearing frame is separated and lifted towards the upper side, so that the tobacco leaves and the tobacco clamps on the carrying vehicle can be connected again. The transfer trolley and the carrying trolley perform their own functions, so that a complete unloading system is formed, mechanical unloading of the cured tobacco leaves is achieved, the operation efficiency is high, and the labor intensity is low.

Description

Technical Field

[0001] This invention relates to an unloading system, and more specifically, to an unloading system for transferring cured tobacco leaves from a tobacco curing barn to the outside. Background Technology

[0002] Currently, Chinese patent application number CN201420067696.5 discloses a tobacco clamp loading and unloading device for a tobacco curing barn, relating to the field of tobacco curing technology, and used to solve the problem of low loading and unloading efficiency of tobacco clamps during tobacco curing operations. The tobacco clamp loading and unloading device provided by this invention achieves forward and backward movement through the cooperation of a first traveling assembly and casters, and lateral movement through a second traveling assembly and casters. Infrared and ultrasonic ranging sensors monitor the device's position in the curing barn, making the device easy to move and accurately positionable, allowing it to be moved to the desired location. The movement of cylinders enables the two traveling assemblies to contact or separate from the ground, facilitating the switching between forward / backward and lateral movement, making operation convenient. The lifting and lowering of cylinders can raise the tobacco clamps to a suitable working position, and in conjunction with the pushing assembly, unload the tobacco clamps. The device has a high degree of intelligence and working efficiency, making it easy to promote.

[0003] However, in actual use, it was found that the tobacco clamps in common tobacco curing barns have multiple layers and hold a large number of tobacco leaves, usually weighing about 30 kilograms before curing. Using a cylinder as the structure to achieve vertical movement, for cost considerations, different layers of tobacco clamps are unloaded one by one, but this greatly reduces the efficiency of operation. Therefore, a self-lifting tobacco clamp unloading device for tobacco curing barns is needed. This device can unload multiple layers of tobacco clamps at once, reducing operation time and cost.

[0004] For the reasons mentioned above, how to unload the multi-layer cigarette clips in one go is the problem that this application addresses. Summary of the Invention

[0005] To address the shortcomings of existing technologies, a tobacco clamp unloading system for tobacco curing barns is provided. This system can unload multiple layers of tobacco clamps at once, reducing operation time and costs.

[0006] To achieve the above objectives, the following technical solution is provided: A tobacco clamp unloading system for a tobacco curing barn, used to transfer cured tobacco leaves from inside the curing barn to the outside, includes a transport vehicle. The transport vehicle includes a base frame and a vertical frame fixedly connected together. The vertical frame is vertically arranged, and the base frame is horizontally arranged. Wheels are mounted on the base frame. Several layers of tobacco receiving rod frames extending outward are provided on the outer side of the vertical frame. A sliding support mechanism is also provided on the vertical frame, through which the tobacco receiving rod frames are movably connected to the vertical frame. A lifting mechanism connected to the tobacco receiving rod frames is provided on the base frame, allowing the tobacco receiving rod frames to rise and fall on the vertical frame under the action of the lifting mechanism. The system is characterized by... A transfer vehicle is installed outside the tobacco curing barn. The transfer vehicle includes: The drive belt, a closed-loop structure, is mounted on the transfer vehicle and is connected to the motor power mechanism for transmission. The receiving frame, corresponding to the number of layers of the cigarette receiving rod frame, is movably connected to the transfer vehicle via a sliding support mechanism; Several levers are mounted on the drive belt and extend toward the support frame. These levers are arranged at intervals in the vertical direction. The levers are used to move different layers of the support frame, so that the support frame can be raised and lowered. A support structure used to support the support frame; Under the action of the motor power mechanism, the drive belt drives the receiving frame to rise through the toggle piece, and is used to receive the cigarette clips on the cigarette rod frame as a whole. After the transfer vehicle moves to the target position, the drive belt drives the receiving frame to fall, so that the cigarette clips are supported on the receiving structure.

[0007] Furthermore, the upright frame is provided with a sliding frame, and the cigarette holder is protrudingly fixed to the outer side of the sliding frame.

[0008] Furthermore, the cigarette holder frame is equipped with force-bearing components that interact with the corresponding pushers, and the force-bearing points of the force-bearing components on different layers of the cigarette holder frame that receive the pusher force are staggered.

[0009] Furthermore, the extension length of the lever on the drive belt gradually increases from top to bottom, and the size of the force-bearing component corresponds to the extension length of the lever. The lever achieves the lifting and lowering of the support frame by levering the force-bearing component.

[0010] Furthermore, connecting blocks are connected to the drive belt at positions corresponding to the paddles, and the paddles are correspondingly connected to the connecting blocks. These paddles are staggered in the horizontal direction.

[0011] Furthermore, the load-bearing component is a groove-shaped body, with the upper end closed and the lower end open.

[0012] Furthermore, a buffer cap is fitted onto the end of the lever that is away from the upright, and the buffer cap is used to penetrate into the force-bearing component and abut against the force-bearing component.

[0013] Furthermore, the cigarette holder includes a connecting rod and vertically arranged fork arms. The fork arms are plate-shaped and are arranged in groups, fixedly connected to the end of the connecting rod away from the upright. The fork arms extend in the direction away from the upright.

[0014] Furthermore, the cigarette holder is provided with a position sensing structure that extends away from the upright. The position sensing structure includes a trigger rod, and an elastic structure is provided between the trigger rod and the connecting rod. Under the action of the elastic structure, the trigger rod extends out of the front side of the fork arm, or under the action of external force, the trigger rod retracts towards the fork arm.

[0015] Furthermore, a docking mechanism and a locking mechanism are provided between the transfer vehicle and the transport vehicle. The docking mechanism includes docking block I and docking block II, and a bidirectional transition fit structure is provided between docking block I and docking block II. The locking mechanism includes a plug and a plate. The plug has a socket for the plate to be inserted into the gap. The locking pin is elastically set on the plug. The plate has a hole for the locking pin to be inserted into the gap.

[0016] Furthermore, the docking block I is provided with a bayonet, which gradually decreases in size from the outside to the inside, and the docking block II is provided with a locking body that matches the bayonet; the upper surface of the docking block I and the lower surface of the docking block II are matching inclined surfaces.

[0017] In summary, the above technical solution offers the following advantages: A transport vehicle equipped with multi-layered tobacco receiving racks unloads tobacco clips with cured tobacco leaves from the tobacco curing barn in one go. Upon reaching the entrance of the curing barn, the transport vehicle then receives and transports the multi-layered tobacco clips from the transport vehicle to the target location. Then, under the action of a motor power mechanism, a drive belt moves, causing the tobacco clips to be unloaded at the receiving structure. After unloading, the receiving rack is separated and moved upwards by a prying mechanism to facilitate the re-receiving and transport of the tobacco clips carried on the transport vehicle. By using the transport vehicle and the transport vehicle itself, combined with the same number of receiving racks and tobacco receiving racks, the unloading of cured tobacco leaves from the curing barn can be achieved quickly, resulting in high operational efficiency and effectively adapting to the multi-layered tobacco curing method within the curing barn. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the transport vehicle involved.

[0019] Figure 2 This is a 3D view of the forklift structure on the transport vehicle.

[0020] Figure 3 This is a side view of the main body of the transport vehicle.

[0021] Figure 4 This is an assembly structure diagram of the drive chain and the receiving frame in the transfer vehicle.

[0022] Figure 5 This is a diagram showing the interaction between the pusher and the force-bearing component on the support rod in the first embodiment of the transfer vehicle.

[0023] Figure 6 This is a diagram showing the interaction between the pusher and the force-bearing component on the support rod in the second embodiment of the transfer vehicle.

[0024] Figure 7 This is a partially enlarged structural diagram of the drive chain and the force-bearing component in the second embodiment of the transfer vehicle.

[0025] Figure 8 This is a structural diagram of the docking mechanism.

[0026] Reference numerals: 1. Sliding frame; 2. Cigarette receiving frame; 21. Connecting rod; 22. Fork arm; 3. Carrier; 31. Base frame; 32. Upright frame; 4. Position sensor; 5. Sliding tube; 6. Trigger rod; 7. Transfer vehicle; 71. Support rod; 72. Supporting structure; 8. Drive chain; 9. Cigarette clip; 10. Motor power mechanism; 11. Force-bearing component; 12. Buffer cap; 13. Pulley; 14. Connecting block; 15. Rod body; 16. Connecting rod; 17. Spring; 18. Locking pin; 19. Insert block; 191. Insertion port; 20. Connecting block II; 201. Locking body; 21. Connecting block I; 211. Locking port; 22. Retainer; 23. Insert plate. Detailed Implementation

[0027] Referring to the attached diagram, this tobacco curing barn unloading system is used to unload cured tobacco leaves from the curing barn and move them to a target location for collection, while allowing for further processing of the mature tobacco leaves. The curing barn in question is an existing structure with internal shelving units arranged in pairs, typically three to five layers high. To cure the tobacco leaves, the roots of the green tobacco leaves are clamped onto the clamps 9, and then both ends of the clamps 9 are placed on a pair of shelving units, with the tobacco leaves suspended between the units. After loading the green tobacco leaves, the interior of the curing barn is heated to cure them.

[0028] Sometimes, an internal track structure needs to be installed on the floor of the tobacco curing barn, extending along the length of the shelving units. This unloading system requires the use of a transport vehicle 3, whose wheels travel on the internal track structure. The transport vehicle 3 consists of a base frame 31 and an upright frame 32 fixedly connected together. The upright frame 32 is vertically positioned, while the base frame 31 is horizontally positioned, with the wheels mounted on the base frame 31. A frame-type sliding frame 1 is movably positioned on the outside of the upright frame 32. A sliding support mechanism is provided between the sliding frame 1 and the upright frame 32, which is generally composed of a sliding block and rail mechanism that works together. Several layers of tobacco receiving rod frames 2 extending outwards are fixed to the sliding frame 1. The tobacco receiving rod frames 2 are arranged in pairs, and the number of layers of tobacco receiving rod frames 2 is the same as the number of shelving units in the tobacco curing barn, generally three to five layers. The interval between two adjacent tobacco receiving rod frames 2 corresponds to the interval between two adjacent shelving units. A lifting mechanism, typically a hydraulic cylinder, is installed on the base frame 31. The piston rod inside the hydraulic cylinder is fixedly connected to the lower end of the sliding frame 1. After the transport vehicle 3 enters the tobacco curing barn, the tobacco receiving frame 2 is positioned below the shelf. Under the lifting action of the lifting mechanism, the tobacco receiving frame 2 lifts a certain number of tobacco clips 9 (3-5 clips per layer) from below. The tobacco clips 9 are loaded onto the tobacco receiving frame 2, and then the transport vehicle 3 moves towards the entrance of the tobacco curing barn. An on-board power supply is installed on the base frame 31. In addition to providing power to the wheels, the on-board power supply is also electrically connected to the hydraulic pump of the hydraulic cylinder. The on-board power supply provides power to the hydraulic pump, causing the piston rod to raise and lower the sliding frame 1. When using this type of transport vehicle 3, a movable turntable is generally required at the entrance of the tobacco curing barn. The turntable has a track section on its surface for the transport vehicle 3 to travel on. After the transport vehicle 3 unloads the tobacco clips 9 from inside the tobacco curing barn, it enters the track section through the inner track structure. The turntable can be rotated manually or electrically to change the direction of the transport vehicle 3, so that the tobacco receiving rod frame 2 on the transport vehicle 3 faces outward. If no turntable is installed, the transfer vehicle 7 can travel directly to the outside of the tobacco curing barn.

[0029] The cigarette holder 2 includes a connecting rod 21 and vertically arranged fork arms 22. The fork arms 22 are plate-shaped, and multiple fork arms 22 are fixedly connected in groups to the end of the connecting rod 21 away from the upright 32. The fork arms 22 extend away from the upright 32. The connecting rod 21 runs across the entire structure, with one end connected to a sliding support mechanism on the upright 32, and the other end fixing all the fork arms 22. Since there are usually at least two fork arms 22, one on each side, there are also two sliding support mechanisms, corresponding to the two outermost fork arms 22. The connecting rod 21 ensures that all fork arms 22 on the same layer can move synchronously during lifting and bearing, working as a whole. Meanwhile, the force-bearing component 11 is usually mounted on the connecting rod 21 to receive the thrust from the lever 13.

[0030] The plate surface of the fork arm 22 is installed perpendicular to the ground, which creates a suitable support point for suspending the cigarette clip 9. The plate structure has stronger bending resistance when bearing vertical loads, so it is not easily deformed when used to support the cigarette clip 9. At the same time, the plate-shaped sides can guide and limit the cigarette clip 9 to prevent it from swinging laterally. And the multiple fork arms 22 share the weight of a long strip cigarette clip 9, which can distribute the load evenly and avoid excessive force on a single point.

[0031] The tobacco receiving rod frame 2 is equipped with a position sensing structure extending away from the upright frame 32. This position sensing structure includes a rod-shaped trigger rod 6. A slide tube 5 is horizontally welded and fixed to the inner side of the fork arm 22. The trigger rod 6 is intermittently inserted into the slide tube 5, with both ends extending outwards from the slide tube 5. The front end of the trigger rod 6 has a flat design, and a compression spring is sleeved on it. The two ends of the compression spring act on the front end of the trigger rod 6 and the slide tube 5, respectively, keeping the front end of the trigger rod 6 extended forward. A position sensor 4 is located at the rear end of the trigger rod 6 to detect its position. When the transport vehicle 3 moves forward within the tobacco curing barn, if it encounters an obstacle blocking the front end of the trigger rod 6, the obstacle will cause the trigger rod 6 to move backward, allowing the position sensor 4 to detect the rear end of the slide rod. The position sensor 4 will then send a signal to the onboard control system of the transport vehicle 3, which will then control the transport vehicle 3 to change direction or stop moving forward. Figure 1 As shown in the image, each set of forks 22 is equipped with a corresponding position sensing structure.

[0032] A trigger rod 6 with an elastic structure is used as a mechanical sensing component of the cigarette holder 2, and a position sensor 4 is set at the rear. By detecting whether the trigger rod 6 is pressed back to transmit a signal, it is usually used to determine whether the cigarette holder 2 has moved to the predetermined position in the shelf, and whether there are obstacles in front of it during the movement.

[0033] The tobacco receiving frame 2 can also be a T-shaped structure, with multiple layers of the tobacco receiving frame 2 connected as a single unit. This unit is connected to the lifting mechanism, which, driven by the lifting mechanism, allows the tobacco receiving frame 2 to load the tobacco clips 9 from inside the tobacco curing barn. Using this structure, the transport vehicle 3 does not require a turntable; after the transport vehicle 3 reaches the entrance of the tobacco curing barn, the outer transfer vehicle 7 directly unloads the tobacco clips 9 from the transport vehicle 3.

[0034] To differentiate the functions of the corresponding devices in this unloading system, the system also includes a mobile transfer vehicle 7. The transfer vehicle 7 is used to unload the cigarette clips 9 loaded on the transport vehicle 3 and then transfer the cigarette clips 9 to the target location. A receiving structure 72 is provided at the target location. The receiving structure 72 is a platform or shelf with a certain height. The transfer vehicle 7 unloads the unloaded cigarette clips 9 onto the receiving structure 72.

[0035] A closed-loop drive belt is provided on the transfer vehicle 7, and several paddles 13 are provided on the drive belt. The number of paddles 13 is the same as the number of layers of the cigarette holder 2. The paddles 13 are fixedly protruding to the outside of the drive belt. As shown in the figure, the drive belt is a drive chain 8, and these paddles 13 are arranged at intervals along the vertical direction on the drive chain 8. The structure of the transfer vehicle 7 includes a rod-shaped support rod 71, which is vertically arranged. The drive chain 8 is arranged along the outer periphery of the support rod 71, and limiting grooves are provided on opposite sides of the support rod 71, in which the drive chain 8 is slidably embedded. Sprockets are rotatably provided at the upper and lower ends of the support rod 71, and the drive chain 8 meshes with the sprockets. A motor power mechanism 10 is fixed at the upper end of the support rod 71, and the motor power mechanism 10 is connected to the upper sprocket, thereby providing power for the movement of the drive chain 8. The transfer carriage 7 is equipped with a number of receiving frames equal to the number of layers of the cigarette receiving frame 2. These receiving frames are movably connected to the transfer carriage 7 via sliding rails and sliders. A lever 13 is used to move different layers of the receiving frames, allowing them to rise and fall. There can be one support rod 71, positioned at the center of the width of the transfer carriage 7. The lever 13 on the support rod 71 applies force to the receiving frame from the center. Alternatively, there can be two support rods 71, positioned on opposite sides of the width of the transfer carriage 7. The levers 13 on both support rods 71 ​​apply force to the receiving frame from both ends.

[0036] The transfer vehicle 7 is driven by the drive chain 8 to drive the pusher 13. The pusher 13 pushes the receiving frame of the transfer vehicle 7. The number of pushers 13 corresponds to the number of receiving frames, which can unload the multi-layer cigarette clips 9 on the transfer vehicle 3 at one time. At the same time, it can drive the receiving frame to rise and fall layer by layer, so that the staff standing on the ground can take the unloaded cigarette clips 9 or put the cigarette clips 9 away.

[0037] When the unloading operation begins, the drive chain 8 starts and drives the pusher 13 to rise. The pusher 13 contacts the receiving frame and pushes the receiving frame upward. Since the pushers 13 are arranged at intervals in the vertical direction, they can correspond to the receiving frames of different layers, preventing the cigarette clips 9 from interfering with each other.

[0038] When the transfer vehicle 7 unloads the cigarette clips 9 from the transport vehicle 3, the receiving frame structure includes a horizontally arranged rod 15. A pair of connecting rods are arranged on the outer surface of the rod 15. The connecting rods are used to insert between the cigarette receiving rods 2 and move upward to abut against the bottom of the cigarette clips 9. Then the receiving frame continues to move upward, which can lift the cigarette clips 9 on the cigarette receiving rods 2. The cigarette clips 9 are received on the connecting rods. The transfer vehicle 7 moves towards the target position and unloads the cigarette clips 9 onto the receiving structure 72 at the target position.

[0039] Throughout the process, the drive chain 8 serves as the power source for the movement of the cigarette clip 9, while the sliding support mechanism plays a stabilizing role. The receiving frame is connected to the transfer vehicle 7 through the sliding support mechanism to ensure smooth lifting and reduce swaying.

[0040] The drive chain 8 can be operated by controlling the motor power mechanism 10 through a program to raise and lower the receiving frame, reducing manual operation and improving the unloading efficiency of the cigarette clip 9. It can also be manually controlled in special circumstances.

[0041] The carrier vehicle 3 and transfer vehicle 7 in this unloading system can be set on the AGV (Automated Guided Vehicle) structure, or they can be integrated into the AGV structure.

[0042] When the transfer vehicle 7 reaches the target location, the drive chain 8 lowers the lever 13, causing it to separate from the tobacco receiving frame 2. Starting with the bottom tobacco clip 9, the clips 9 are stacked sequentially onto the receiving structure 72. The receiving structure 72 can be a bracket, which is simple in structure and low in cost. Alternatively, it can be an independent receiving frame, typically a frame structure independently installed at the target location, which can be designed with adjustable height to accommodate tobacco receiving frames 2 of different heights. The receiving structure 72 can also be mounted on the transfer vehicle 7. After the tobacco clips 9 are unloaded onto the transfer vehicle 7, the drive chain 8 moves, causing the tobacco clips 9 to descend to a suitable position. The transfer vehicle 7 then delivers the tobacco clips 9 along with the cured tobacco leaves to the corresponding position.

[0043] The paddles 13 on the drive chain 8 are staggered in the vertical direction to avoid contact with multiple layers of receiving frames at the same time, so as to achieve sequential lifting and lowering. In this way, the paddles 13 can be directly connected to the drive chain 8, or an additional moving block can be set as a medium. Usually, one moving block corresponds to one paddle 13 and is connected to the drive chain 8 to achieve overall driving. At the same time, when the cigarette receiving frame 2 descends, the moving block is used as the support structure first to protect the cigarette receiving frame 2.

[0044] The sliding support mechanism can employ a rail-slider mechanism. When applied to the transport vehicle 3, a rail is installed on the upright 32, and the cigarette holder 2 achieves linear sliding through the cooperation of the slider and the rail. Alternatively, rollers can be installed on the cigarette holder 2, allowing it to roll directly on the upright 32 and maintain stability through a wrapping or semi-wrapping mechanism. Considering maintenance time and cost, a rail and slider are used as the main components of the sliding support mechanism. The rail and slider themselves only serve to prevent derailment, resulting in a relatively simple structure. Spare parts can be stored in advance for quick and easy replacement when needed. A similar structure is used when the sliding support mechanism is applied to the transfer vehicle 7.

[0045] The transfer vehicle 7 achieves unloading of multiple layers of tobacco clips 9 from the self-loading vehicle 3 by setting multiple levers 13 on a drive chain 8. The drive chain 8 only needs to move the tobacco clips 9 to a convenient position, which not only reduces operation time and cost, but also better suits the structural characteristics of the tobacco curing barn.

[0046] The rod 15 of the receiving frame is equipped with a force-receiving member 11 that interacts with the corresponding lever 13. The force-receiving points of the force-receiving members 11 on different cigarette receiving rod frames 2 are staggered to receive the push force from the lever 13. This way, only one drive chain 8 needs to be controlled for simple upward and downward reciprocating motion, eliminating the need for independent actuators or complex electrical control programs for each layer; the mechanical structure itself achieves sequential control. This avoids mechanical interference between different layers of cigarette receiving rod frames 2 during movement. Since the lever positions are fixed, when the lever 13 begins to rise under the action of the drive chain 8, the uppermost lever 13 will first contact the force-receiving point of the first layer's force-receiving member 11 and begin pushing the first layer upward. At this time, the force-receiving points of other layers have not yet contacted their corresponding lever 13 and therefore remain stationary. As the drive chain 8 continues to rise, after pushing the first layer upward a certain distance, the second lever 13, which is slightly higher, contacts the force-receiving point of the second layer's force-receiving member 11 and begins pushing the second layer upward. At this time, the first and second layers are rising simultaneously. This process continues until all the cigarette holders 2 that need to be raised are pushed up by their corresponding levers 13. This ensures that the activation of the cigarette holders 2 is sequential.

[0047] according to Figure 5 In the first embodiment shown, the extension length of the lever 13 on the drive chain 8 gradually increases from top to bottom, and the size of the force-bearing member 11 corresponds to the extension length of the lever 13. When the motor power mechanism 10 is started, the shortest lever 13, due to its shortest horizontal extension length, will only pass through the position of the upper force-bearing member 11. The middle and lower force-bearing members 11, being further away from the upright 32, are outside the movement path of this short lever 13 and will not be touched. Similarly, levers 13 of various lengths can only interfere with the corresponding force-bearing members 11, and this method allows all force-bearing members 11 to be staggered, so that the cigarette holder 2 is arranged in a horizontally increasing manner on the receiving structure 72. The advantage is that the structure at the force-bearing member 11 is simple and easy to maintain, but the space required for operation is limited by the most prominent cigarette holder 2, and is usually slightly larger. At the same time, in order to prevent further interference from the cigarette holder 2, the length of the connecting rod 21 and the installation position of the fork arm 22 can be adjusted adaptively.

[0048] according to Figure 6 , 7In the second embodiment shown, a connecting block 14 is connected to the drive chain 8 at a position corresponding to the lever 13. The lever 13 is correspondingly connected to the connecting block 14, and these levers 13 are staggered in the horizontal direction. The principle of the second embodiment is the same as that of the first embodiment, which uses staggered force points to prevent the lever from hitting the non-corresponding force member 11. The second embodiment achieves this purpose by using horizontally staggered levers 13. Multiple receiving frames are overlapped in the vertical direction. The advantage is that the space required for operation is smaller than that of the first embodiment. However, due to the addition of the connecting block 14, the structure at the lever 13 is relatively more complex, which increases the maintenance cost. Also, in order to prevent further interference with the cigarette receiving frame 2, the length of the connecting rod 21 and the installation position of the fork arm 22 can be adjusted adaptively.

[0049] The force-bearing component 11 can be configured as a groove, with its upper end closed and its lower end open. The lever 13 is typically a rod, and the shape of the force-bearing component 11 is more suitable for the rod to abut against, while also preventing the lever 13 from detaching directly from the force-bearing component 11 due to its own vibration. The force-bearing component 11 can be a cuboid with a groove carved out, or it can be a structure formed by connecting two abutment pieces to form an inverted "L" shape, as shown in the figure, among other methods.

[0050] A buffer cap 12 made of an elastic material such as rubber is fitted onto the end of the lever 13 away from the upright 32. The buffer cap 12 is used to penetrate into the force-bearing member 11 and abut against the force-bearing member 11. Since the lever 13 is relatively small, the contact surface it forms is also small, which will increase the pressure on the force-bearing member 11 and make it easy to be damaged. Therefore, the buffer cap 12 is provided to increase the force-bearing area on the one hand, and absorb the impact through deformation on the other hand, thereby protecting the lever 13 and the force-bearing member 11.

[0051] To facilitate the docking of the transfer vehicle 7 and the carrier vehicle 3 during the unloading of cigarette clips 9, a docking mechanism and a locking mechanism are provided between them. The docking mechanism enables the transfer vehicle 7 and the carrier vehicle 3 to align. Through structural adaptation and positional correspondence, the connecting rods and fork arms 22 of both vehicles are aligned, allowing for the smooth unloading of the multi-layer cigarette clips 9 from the fork arms 22 onto the connecting rods of the receiving frame in one go. The figure shows two sets of docking mechanisms. One set includes docking block I 21 and docking block II 20, which are respectively mounted on two docking rods 16. During docking of the carrier vehicle 3 and the transfer vehicle 7, the two docking blocks extend towards each other on their respective docking rods 16. A bidirectional transition fit structure is provided between docking blocks I 21 and docking blocks II 20, allowing for both lateral and vertical alignment. The diagram shows the specific structure of the two docking blocks. Dock block I 21 has a latch 211 that gradually decreases in size from the outside in. Dock block II 20 has a locking body 201 that matches the latch 211. The upper surface of dock block I 21 and the lower surface of dock block II 20 are matching inclined surfaces. This ensures that the transfer vehicle 7 and the transport vehicle 3 are properly aligned during docking. One of the two docking rods 16 is installed on the transfer vehicle 7; the other docking rod 16 can be installed on the transport vehicle 3 or on the turntable seat outside the tobacco curing barn. The installation positions of the two docking rods 16 have certain requirements, but are entirely achievable in actual installation.

[0052] Figure 8The diagram shows that the locking mechanism is used to lock the transport vehicle 3 and the transfer vehicle 7 after they are docked, making the two vehicles a single integrated structure. This facilitates stability during the unloading of the tobacco rods, providing stability for the unloading process. Two sets of locking mechanisms are located on opposite sides of the two docking mechanisms. One locking mechanism includes a block 19 and a piece 23, which are fixed to two docking rods 16. The block 19 has a slot 191 for the piece 23 to be inserted, and a locking pin 18 is elastically mounted on the block 19. The piece 23 has a hole for the locking pin 18 to be inserted. After the transfer vehicle 7 and the transport vehicle 3 are docked, the hole on the piece 23 is located at the position of the locking pin 18, and the locking pin 18 is inserted into the hole to lock the two vehicles. A Z-shaped retainer 22 is provided on the insert block 19, and a locking pin 18 passes through the insert block 19, with the lower end of the locking pin 18 extending into the socket 191. A spring 17 is sleeved on the outer periphery of the locking pin 18. The upper end of the spring 17 acts on the retainer 22, and the lower end of the spring 17 acts on the locking pin 18. The spring 17 exerts a downward force on the locking pin 18, causing the lower end of the locking pin 18 to extend into the socket 191. The upper end of the locking pin 18 extends to the upper side of the retainer 22. The upper end of the locking pin 18 can be connected to a cable, which is connected to a handle or pedal on the transfer vehicle 7. By operating the handle or pedal, the lower end of the locking pin 18 moves upward. After the two vehicles are aligned, the handle or pedal is released, allowing the lower end of the locking pin 18 to insert into the socket on the insert plate 23, thus completing the locking of the two vehicles. After the cigarette holder is unloaded and returned to its original position, operating the handle or pedal will disengage the locking pin 18 from the socket, thus separating the two vehicles. A sensor can be installed between the two vehicles to detect whether they have successfully docked. If docking is complete, the sensor will illuminate a signal light, signaling the completion of docking and initiating the next step of disengaging the two vehicles. When both vehicles are AGVs, the sensor can also input signal commands, which will trigger the corresponding action of the locking pin 18 via an electric mechanism. In this case, the cable connected to the locking pin 18 is wound around the power output shaft of the servo motor, and the program on the transport vehicle 3 will control the operation of the servo motor according to the sensor's signal commands.

Claims

1. A tobacco clamp unloading system for a tobacco curing barn, used to transfer cured tobacco leaves from inside the curing barn to the outside, comprising a transport vehicle, the transport vehicle including a base frame and a vertical frame fixedly connected together, the vertical frame being vertically arranged, the base frame being horizontally arranged, and wheels mounted on the base frame; several layers of tobacco receiving rod frames extending outward are provided on the outer side of the vertical frame; a sliding support mechanism is also provided on the vertical frame, the tobacco receiving rod frames being movably connected to the vertical frame through the sliding support mechanism; a lifting mechanism connected to the tobacco receiving rod frames is provided on the base frame, the tobacco receiving rod frames being raised and lowered on the vertical frame under the action of the lifting mechanism, characterized in that... A transfer vehicle is installed outside the tobacco curing barn. The transfer vehicle includes: The drive belt, a closed-loop structure, is mounted on the transfer vehicle and is connected to the motor power mechanism for transmission. The receiving frame, corresponding to the number of layers of the cigarette receiving rod frame, is movably connected to the transfer vehicle via a sliding support mechanism; Several levers are mounted on the drive belt and extend toward the support frame. These levers are arranged at intervals in the vertical direction. The levers are used to move different layers of the support frame, so that the support frame can be raised and lowered. A support structure used to support the support frame; Under the action of the motor power mechanism, the drive belt drives the receiving frame to rise through the toggle piece, and is used to receive the cigarette clips on the cigarette rod frame as a whole. After the transfer vehicle moves to the target position, the drive belt drives the receiving frame to fall, so that the cigarette clips are supported on the receiving structure.

2. The tobacco clamp unloading system for a tobacco curing barn according to claim 1, characterized in that, The upright frame is equipped with a sliding frame, and the cigarette holder is protrudingly fixed to the outer side of the sliding frame.

3. The tobacco clamp unloading system for a tobacco curing barn according to claim 1, characterized in that, The receiving frame is provided with force-bearing components that interact with the corresponding pushers. The force-bearing points of the force-bearing components on different layers of the receiving frame that receive the pusher force are staggered.

4. The tobacco clamp unloading system for a tobacco curing barn according to claim 3, characterized in that, The extension length of the lever on the drive belt gradually increases from top to bottom, and the size of the force-bearing component corresponds to the extension length of the lever.

5. The tobacco clamp unloading system for a tobacco curing barn according to claim 3, characterized in that, Connecting blocks are connected to the drive belt at positions corresponding to the paddles, and the paddles are connected to the connecting blocks accordingly. These paddles are staggered in the horizontal direction.

6. The tobacco clamp unloading system for a tobacco curing barn according to any one of claims 3-5, characterized in that, The force-bearing component is a groove-shaped body, with the upper end closed and the lower end open.

7. The tobacco clamp unloading system for a tobacco curing barn according to claim 6, characterized in that, A buffer cap is fitted on the end of the lever away from the upright, and the buffer cap is used to penetrate into the force-bearing component and abut against the force-bearing component.

8. The tobacco clamp unloading system for a tobacco curing barn according to any one of claims 1-5, characterized in that, The cigarette holder includes a connecting rod and vertically arranged fork arms. The fork arms are plate-shaped and are arranged in groups, fixedly connected to the end of the connecting rod away from the upright. The fork arms extend in the direction away from the upright.

9. The tobacco clamp unloading system for a tobacco curing barn according to claim 8, characterized in that, The cigarette receiving rod frame is provided with a position sensing structure that extends away from the upright frame. The position sensing structure includes a trigger rod and an elastic structure between the trigger rod and the connecting rod. Under the action of the elastic structure, the trigger rod extends out of the front side of the fork arm, or under the action of external force, the trigger rod retracts towards the fork arm.

10. The tobacco clamp unloading system for a tobacco curing barn according to any one of claims 1-5, characterized in that, A docking mechanism and a locking mechanism are provided between the transfer vehicle and the transport vehicle. The docking mechanism includes docking block I and docking block II, and a bidirectional transition fit structure is provided between docking block I and docking block II. The locking mechanism includes a plug and a plate. The plug has a socket for the plate to be inserted into the gap. A locking pin is elastically set on the plug. The plate has a hole for the locking pin to be inserted into the gap.

11. The tobacco clamp unloading system for a tobacco curing barn according to claim 10, characterized in that, The docking block I is provided with a bayonet, which gradually decreases in size from the outside to the inside. The docking block II is provided with a locking body that matches the bayonet. The upper surface of the docking block I and the lower surface of the docking block II are matching inclined surfaces.

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