A tobacco leaf stripping device of a vertical layered tobacco leaf harvesting device

Abstract

The utility model discloses a kind of vertical layered tobacco leaf harvesting device's leaf pulling device, including first part and second part of symmetrical structure, first part includes connecting frame, box, reset spring, power cord, push rod type electromagnet being set in the push rod type electromagnet of box, leaf pulling rubber plate and movable pusher;Movable pusher includes follow-up push rod, push plate and driving push rod, driving push rod and follow-up push rod are through box by sliding hole, and driving push rod is through push rod type electromagnet;The one end of driving push rod and follow-up push rod is fixed with push plate, and the other end of driving push rod and follow-up push rod is all equipped with reset spring;The both sides of box are fixedly connected with connecting frame respectively;Push rod type electromagnet is connected with power cord;Push plate is fixedly connected with leaf pulling rubber plate.The utility model makes the leaf pulling rubber plate of two sides symmetrical structure can be automatically fastened tobacco plant tobacco stem, and all tobacco leaves of harvesting layer are pulled down, realizes the effect of preventing missing sampling.

Description

Technical Field

[0001] This utility model relates to the field of tobacco leaf harvesting devices, specifically to a leaf-picking device for a vertically layered tobacco leaf harvesting device. Background Technology

[0002] Traditional tobacco varieties have relatively small leaves and low yields per acre. To increase yields, many high-yield varieties have been introduced in recent years, resulting in a significant increase in yield per acre. High-yield varieties have much larger individual leaves, with the length of a single leaf being more than 1.5 times that of traditional varieties. Larger leaves mean a larger contact area with machinery, making the midrib more prone to breakage and leaf surface damage during fully automated harvesting. Harvesting with fully automated harvesters using a rotary leaf-stripping method results in an exponential increase in the rate of leaf breakage.

[0003] To address the mechanization of harvesting high-yield tobacco varieties, a vertical tiered harvesting device has been adopted in the harvester, replacing the rotary leaf-stripping device. Vertical tiered harvesting involves a downward leaf-stripping action within a vertical height range. The stripped leaves fall directly onto the harvester's conveyor and collection device, and the leaf surface does not come into contact with other mechanical parts during the process of leaving the tobacco plant, thus preventing leaf damage. The harvesting quality of the vertical tiered harvesting device is related to the downward impact speed of the vertical action device and the distance between the leaf-stripping device and the tobacco plant. The vertical action device is already mature, and the leaf-stripping device has evolved to include a fixed-gap leaf-stripping mechanism.

[0004] The fixed-gap leaf-plucking device consists of two parts, left and right, symmetrically installed in the center of the vertical stratified harvesting device. To ensure the passage of tobacco plants, there is a channel with a certain gap in the middle of the leaf-plucking device. When the tobacco plant reaches the center of the channel, the harvesting device pushes the leaf-plucking device vertically downward to pluck the leaves. Because the gap between the leaf-plucking devices is relatively large, it cannot tightly grip the tobacco stem, which can easily cause missed harvesting. Utility Model Content

[0005] To address the problem of missed harvesting during the leaf stripping process in vertically layered tobacco harvesting devices, this invention proposes a leaf stripping device for such devices. During leaf stripping, symmetrically positioned rubber stripping plates automatically engage with the tobacco plant stems, stripping down all the leaves in the harvesting layer and resolving the problem of missed harvesting.

[0006] The technical solution provided by this utility model is as follows: A leaf-plucking device for a vertically layered tobacco leaf harvesting apparatus includes: a first part and a second part with symmetrical structure. The first part includes a connecting frame, a housing, a return spring, a power cord, a push rod electromagnet installed in the housing, a leaf-plucking rubber plate, and a movable pusher. The movable pusher includes a follower push rod, a push plate, and a drive push rod. The drive push rod and the follower push rod pass through the housing through a sliding hole, and the drive push rod passes through a push rod electromagnet. One end of the drive push rod and the follower push rod are fixedly connected to the push plate, and the other end of the drive push rod and the follower push rod are both fitted with a return spring. The two sides of the box are fixedly connected to the connecting frame respectively; The push rod electromagnet is connected to the power cord; The push plate is fixedly connected to the rubber plate of the blade.

[0007] Furthermore, the drive push rod is positioned in the middle of the housing, and the follower push rods are symmetrically arranged on both sides of the drive push rod.

[0008] Furthermore, both the driving push rod and the follower push rod have a rod cap at the other end. The outer diameter of the rod cap is larger than the inner diameter of the return spring, and the outer diameter of the rod cap is not smaller than the outer diameter of the return spring.

[0009] Furthermore, the connecting frame is also equipped with a leaf divider, the end face of which is flush with the corresponding side end face of the housing, and the leaf divider and the housing are respectively fixed on both sides of the connecting frame.

[0010] Furthermore, the casing is also equipped with a cover, with the four corners of the cover fixed to the four corners of the casing.

[0011] Furthermore, the inner wall of the sliding hole on the housing is also equipped with a wear-resistant bushing.

[0012] Furthermore, the blade-scraping nozzle of the blade-scraping rubber plate is composed of continuously arranged semicircles, and the blade-scraping rubber plate and the push plate are detachably connected.

[0013] The beneficial effects of this utility model are: This invention uses a pusher-type electromagnet to drive a drive rod in a movable pusher, which in turn drives a push plate. The push plate then drives a leaf-plucking rubber plate, enabling the symmetrically structured leaf-plucking rubber plates on both sides of the leaf-plucking device to automatically clamp onto the tobacco plant stems and stalks, thus plucking off all the tobacco leaves from the harvesting layer and preventing missed harvesting. Attached Figure Description

[0014] Figure 1 This is an exploded view of the present invention; Figure 2 This is an exploded view of the movable pusher of this utility model; Figure 3 This is one of the schematic diagrams of the tobacco leaf passing through the gap structure of this utility model; Figure 4 This is one of the schematic diagrams of the blade gap structure of this utility model; Figure 5 This is the second schematic diagram of the tobacco leaf through the gap structure of this utility model; Figure 6 This is the second schematic diagram of the blade gap structure of this utility model.

[0015] In the diagram: 1. Machine cover; 2. Connecting frame; 3. Leaf separator; 4. Housing; 5. Follow-up push rod; 6. Return spring; 7. Power cord; 8. Push rod electromagnet; 9. Push plate; 10. Leaf-splitting rubber plate; 11. Drive push rod; 12. Rod cap. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0017] It should be noted that in the description of this utility model, the terms "middle", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Examples, such as Figures 1 to 4 As shown, this embodiment provides a leaf-plucking device for a vertically layered tobacco leaf harvesting device. The leaf-plucking device includes a first part and a second part with symmetrical structure, that is, the first part and the second part have the same structure. The first part includes a connecting frame 2, a housing 4, a return spring 6, a power cord 7, a push rod electromagnet 8 set in the housing 4, a leaf-plucking rubber plate 10, and a movable pusher.

[0019] The movable pusher includes a follower push rod 5, a push plate 9, and a drive push rod 11. Both the drive push rod 11 and the follower push rod 5 pass through corresponding sliding holes on the side frames of the housing 4. After passing through the housing 4, one end of each push rod is fixed to the push plate 9 with screws, while the push plate 9 is fixedly connected to the blade rubber plate 10. A push rod electromagnet 8 is installed inside the housing 4 and is perpendicularly fixed to the two side frames of the housing 4. The drive push rod 11 passes through both the housing 4 and the push rod electromagnet 8. The follower push rod 5, the push plate 9, and the drive push rod 11 together constitute a device that drives the movable pusher using the push rod electromagnet 8. A return spring 6 is fitted at the other end of both the drive push rod 11 and the follower push rod 5. The two sides of the housing 4 are fixedly connected to the connecting frame 2.

[0020] The other two sides of the housing 4 are fixedly connected to the connecting frame 2; the push plate 9 is fixedly connected to the blade rubber plate 10; the push rod electromagnet 8 is connected to the power cord 7.

[0021] Since the push rod electromagnet 8 is connected to the power cord 7, it will start when powered on, thus pushing the drive push rod 11, which in turn drives the push plate 9 to move forward. At this time, the blade rubber plate 10 connected to the push plate 9 also moves forward. Since the follower push rod 5 is fixedly connected to the push plate 9, it will also move forward.

[0022] When the push rod electromagnet 8 is de-energized, the magnetic force disappears and the thrust stops. The previously compressed return spring 6, affected by the forward movement of the drive push rod 11, will now spring back to its original state. Thus, the sleeved return spring 6 drives the drive push rod 11 and the follower push rod 5 back to their original state.

[0023] Preferably, both the driving push rod 11 and the follower push rod 5 have a rod cap 12 at their other ends. The outer diameter of the rod cap 12 is larger than the inner diameter of the return spring 6, and the outer diameter of the rod cap 12 is not smaller than the outer diameter of the return spring 6. The purpose of the rod cap 12 is to securely fit the return spring 6 onto the driving push rod 11 and the follower push rod 5, effectively preventing the return spring 6 from popping out and falling off during the return process.

[0024] Preferably, the drive push rod 11 can be installed through the middle part of the housing 4, and there are at least two follower push rods 5, which are symmetrically arranged on the housing 4 on both sides of the drive push rod 11, so that the movable pusher is more stable in the reciprocating motion.

[0025] Preferably, a leaf divider 3 is also provided on the connecting frame 2. The end face of the leaf divider 3 is the same as and aligned with the end face of the box body 4, and is fixedly connected to both sides of the connecting frame 2. The purpose of adding the leaf divider 3 is to effectively guide each tobacco plant accurately to the leaf-picking device, avoid excessive contact between the tobacco leaves and the leaf-picking rubber plate 10, and improve the leaf-picking efficiency.

[0026] Preferably, a cover 1 is also provided on the housing 4, and the four corners of the cover 1 are fastened to the four corners of the housing 4 by bolts. The cover 1 can protect the internal components of the housing 4, preventing tobacco leaves from entering the housing 4 during the leaf-picking process and affecting the operation of the internal components, and also keeping the inside of the housing 4 clean, eliminating the need for frequent maintenance and upkeep.

[0027] Preferably, the inner wall of the sliding hole on the housing 4 is provided with a wear-resistant bushing, and the follower push rod 5 and the drive push rod 11 respectively slide in contact with the wear-resistant bushing of the corresponding sliding hole. The addition of the wear-resistant bushing can effectively reduce the wear between the push rod and the sliding hole of the housing 4, making the corresponding components more durable.

[0028] Preferably, the leaf-plucking opening of the leaf-plucking rubber plate 10 is arranged in three consecutive semicircles. More semicircular openings can also be provided as needed. When the symmetrical leaf-plucking device is in operation, the circular openings of the leaf-plucking rubber plate 10 effectively frame each tobacco plant. The leaf-plucking rubber plate 10 and the push plate 9 are detachably and securely connected. This detachable structure serves two purposes: first, it allows for easy replacement of worn leaf-plucking rubber plates 10; second, it allows for the replacement of leaf-plucking rubber plates 10 of different lengths to meet the needs of different situations during tobacco harvesting.

[0029] The working principle of this utility model: A vertically layered tobacco leaf harvesting device comprises two completely mutually exclusive parts. Each part includes a leaf-plucking device and a pushing device, and the leaf-plucking device is driven by a drive motor.

[0030] The leaf-plucking device in this technical solution is part of the harvesting device. Similarly, the leaf-plucking device consists of two symmetrical parts (the first part 100 and the second part 200). When the vertical layered tobacco leaf harvesting device is powered on, it will synchronously trigger the vertical telescopic support, thereby driving the leaf-plucking device to move downward. At this time, the leaf-plucking rubber plates 10 on the left and right sides of the leaf-plucking device are in a gap-passing state. When the tobacco plant reaches the middle position of the leaf-plucking rubber plates 10 on the left and right sides, the position sensor on the vertical layered tobacco leaf harvesting device sends a signal. At this time, the control unit starts the power supply of the harvesting device, and the power supply, through the power line 7, simultaneously powers on the two push rod electromagnets 8, and the two push rod electromagnets 8 will start.

[0031] The push-rod type electromagnet 8, also known as the push-pull type electromagnet, works primarily based on the magnetic effect of electric current and the mechanical motion conversion of electromagnets. Its core principle is to generate a magnetic field by passing an electric current through the electromagnet, thereby driving mechanical components to achieve linear reciprocating motion.

[0032] When current flows through the coil of the electromagnet, according to Oersted's experiment principle—the magnetic effect of current—the coil generates a magnetic field. This magnetic field attracts the internal iron core, thereby driving the drive rod 11 to move forward. The drive rod 11 pushes the push plate 9 forward. When the push rod electromagnet 8 is de-energized, the magnetic field of the push rod electromagnet 8 disappears, the pushing force stops, and at this time, the drive rod 11 and the follower push rod 5 return to their original positions under the action of the return spring 6, completing a linear reciprocating motion.

[0033] like Figure 5 and Figure 6 As shown, when the two movable pushers move forward synchronously, the leaf-plucking rubber plates 10 on the left and right sides are in a leaf-plucking gap state, so that the leaf-plucking rubber plates 10 with the left and right symmetrical structure automatically grab the tobacco plant stems and stalks, and pluck down all the tobacco leaves in the harvest layer, so as to prevent missed harvesting.

[0034] After all the tobacco leaves in the harvest layer have been removed, the control unit of the vertically layered tobacco harvesting device disconnects the power, and the rubber plates 10 on both sides of the leaf-removing device return to their pass-through gap state. Simultaneously, the vertically layered tobacco harvesting device triggers the vertical telescopic support, causing the leaf-removing device to rise and return to the horizontal level of the upper surface of the harvest layer, preparing for the removal of the next tobacco leaf.

[0035] This invention enables the symmetrically structured leaf-picking rubber plate 10 to automatically clamp onto the tobacco plant stems, thus removing all tobacco leaves from the harvesting layer and preventing missed harvesting.

[0036] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the principles and essence of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A leaf-picking device for a vertically layered tobacco leaf harvesting apparatus, characterized in that: It includes a first part (100) and a second part (200) with symmetrical structure. The first part (100) includes a connecting frame (2), a housing (4), a return spring (6), a power cord (7), a push rod electromagnet (8) installed in the housing (4), a blade rubber plate (10), and a movable pusher; The movable pusher includes a follower push rod (5), a push plate (9) and a drive push rod (11). The drive push rod (11) and the follower push rod (5) pass through the housing (4) through a sliding hole, and the drive push rod (11) passes through the push rod electromagnet (8). One end of the drive push rod (11) and the follower push rod (5) is fixedly connected to the push plate (9), and the other end of the drive push rod (11) and the follower push rod (5) is fitted with a return spring (6). The two sides of the box (4) are respectively fixedly connected to the connecting frame (2); The push rod electromagnet (8) is connected to the power supply line (7); The push plate (9) is fixedly connected to the leaf rubber plate (10).

2. The leaf-picking device of the vertical layered tobacco harvesting device according to claim 1, characterized in that: The drive push rod (11) is located in the middle of the housing (4), and the follower push rod (5) is symmetrically arranged on both sides of the drive push rod (11).

3. The leaf-picking device of the vertical layered tobacco harvesting device according to claim 1, characterized in that: Both the driving push rod (11) and the follower push rod (5) are provided with a rod cap (12) at the other end. The outer diameter of the rod cap (12) is larger than the inner diameter of the return spring (6), and the outer diameter of the rod cap (12) is not smaller than the outer diameter of the return spring (6).

4. The leaf-picking device of the vertical layered tobacco harvesting device according to claim 1, characterized in that: The connecting frame (2) is also provided with a leaf divider (3), the end face of the leaf divider (3) is flush with the corresponding side end face of the box (4), and the leaf divider (3) and the box (4) are respectively fixed on both sides of the connecting frame (2).

5. The leaf-picking device of the vertical layered tobacco harvesting device according to claim 1, characterized in that: The box (4) is also provided with a cover (1), and the four corners of the cover (1) are fixed to the four corners of the box (4).

6. The leaf-picking device of the vertical stratified tobacco harvesting device according to claim 1, characterized in that: The inner wall of the sliding hole on the box (4) is also provided with a wear-resistant bushing.

7. The leaf-picking device of the vertical layered tobacco harvesting device according to claim 1, characterized in that: The blade-scraping opening of the blade-scraping rubber plate (10) is composed of continuously arranged semicircles, and the blade-scraping rubber plate (10) and the push plate (9) are detachably connected.

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