Bottom lifting frame of layered harvester

Abstract

The utility model discloses a layered harvester bottom lifting frame which comprises a lifting frame, a supporting frame installed on one side of the lifting frame, a collecting basket installed on one side of the lifting frame and a seat installed on the upper surface of the lifting frame, first sliding grooves are formed in the front side and the rear side of the lifting frame, and first screws are arranged in the first sliding grooves. A first gear is installed at the upper end of the first screw rod, a second sliding groove is formed in the middle of the lifting frame, a second screw rod is arranged in the second sliding groove, a second gear is installed at the upper end of the second screw rod, and a movable groove is formed in the top of the lifting frame. By arranging the first sliding block, the second sliding block, the first screw rod and the second screw rod, the seat can be borne by the supporting frame to ascend and descend, the height of a harvesting station of a worker can be adjusted, the lifting function of the collecting basket and the seat is achieved, the height of the seat can be adjusted according to tobacco plants of different heights, and the worker is prevented from frequently bending down.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco harvesters, in particular to a bottom lifting frame of a layered harvester. Background Technique

[0002] A tobacco harvester is an agricultural equipment specifically used for harvesting tobacco leaves. Common tobacco harvesters are usually divided into fully automatic and semi-automatic types. The fully automatic tobacco harvester automatically picks, conveys, and collects tobacco during the machine's driving process, while the semi-automatic type relies on manual leaf picking during the machine's driving process, and then the equipment automatically conveys and collects. Among them, the semi-automatic tobacco harvester usually includes a tobacco collection mechanism and a lifting mechanism arranged vertically. For reference, the Chinese patent document with the publication number (CN203353187U) discloses a tobacco harvester, including a frame. The rear end of the frame is connected with a tobacco leaf storage carriage. At least one tobacco leaf harvesting station is arranged below the front end of the tobacco leaf storage carriage. A tobacco leaf harvesting and lifting device is respectively arranged between each tobacco leaf harvesting station and the tobacco leaf storage carriage; Workers pick tobacco leaves at the tobacco leaf harvesting station. When the picked tobacco leaves reach a certain quantity, the tobacco leaf harvesting and lifting device is used to transport the tobacco leaves onto the tobacco leaf storage carriage. After the picking is completed, the tobacco leaves are transported to the tobacco curing barn at one time, eliminating the need for workers to shuttle and carry tobacco leaves in the field, saving labor and labor time, and improving work efficiency.

[0003] The tobacco harvester in the above patent document can realize the lifting of the lifting basket for the lifting and conveying of tobacco, but it cannot perform lifting adjustment on the tobacco leaf harvesting station. For the harvesting of tobacco leaves at different heights, only manual waist bending can be relied on to adapt to the tobacco leaf harvesting height, which will cause too much burden on the workers' waists in the long run. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bottom lifting frame of a layered harvester to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A bottom lifting frame of a layered harvesting machine, including a lifting frame, a support frame installed on one side of the lifting frame, a collection basket installed on one side of the lifting frame, and a seat installed on the upper surface of the lifting frame. First chutes are provided on both the front and rear sides of the lifting frame. A first screw rod is arranged inside the first chute. A first gear is installed at the upper end of the first screw rod. A second chute is provided in the middle of the lifting frame. A second screw rod is arranged inside the second chute. A second gear is installed at the upper end of the second screw rod. An activity slot is provided at the top of the lifting frame. A driving gear is arranged between the first gear and the second gear inside the activity slot. A vertical shaft is arranged through the middle of the driving gear. Activity blocks are arranged through the upper and lower ends of the vertical shaft. The top of the upper activity block is connected with a mounting seat. A driving motor is installed on the mounting seat. The side wall of the mounting seat is connected with a two-way cylinder.

[0006] Preferably, a first sliding block is connected to the side of the support frame close to the lifting frame. A first screw hole is provided through the middle of the first sliding block. First bearings are installed between the upper and lower ends of the first screw rod and the lifting frame. The first screw rod passes through the first sliding block through the first screw hole to form a threaded connection. The first sliding block is clamped in the first chute and slides.

[0007] Preferably, a second sliding block is connected to the middle of the side of the collection basket close to the lifting frame. A second screw hole is provided through the middle of the second sliding block. Second bearings are installed between the upper and lower ends of the second screw rod and the lifting frame. The second screw rod passes through the second sliding block through the second screw hole to form a threaded connection. The second sliding block is clamped in the second chute and slides.

[0008] Preferably, the driving gear meshes with the first gear and the second gear alternately. The driving gear forms a rotational connection with the first gear and the second gear. The lower end of the vertical shaft is rotationally connected to the activity block through a bearing. The upper end of the vertical shaft is connected to the shaft end of the driving motor.

[0009] Preferably, the activity block is in the shape of a rectangular block. Cross shapes protrude from both sides of the activity block. The activity block is clamped inside the activity slot to form a sliding connection.

[0010] Preferably, the mounting seat is in an L shape. The bottom of the mounting seat is integrally connected with the activity block. The two-way cylinder is installed at the center of the top of the lifting frame. The telescopic ends on both sides of the two-way cylinder are respectively connected to the two mounting seats.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] 1. For the bottom lifting frame of this layered tobacco harvester, by setting the first slider, the second slider, the first screw rod and the second screw rod, the first slider is clamped inside the first chute, and the second slider is clamped inside the second chute. The driving gear drives the second gear to rotate, the second gear drives the second screw rod to rotate, and the second screw rod drives the second slider to drive the collection basket to lift, achieving the purpose of lifting and conveying tobacco leaves by the collection basket. The driving gear drives the first gear to rotate, the first gear drives the first screw rod to rotate, and the first screw rod drives the first slider through the first screw hole to drive the support frame to lift, and the support frame bears the lifting of the seat, adjusting the height of the harvesting position of the staff, realizing the lifting function of the collection basket and the seat, and the height of the seat can be adjusted according to tobacco plants of different heights, avoiding frequent bending of the staff.

[0013] 2. For the bottom lifting frame of this layered tobacco harvester, by setting the movable groove, the movable block, the double-acting cylinder and the driving gear, when the double-acting cylinder extends, it pushes the two mounting seats away from each other. The mounting seat drives the movable block and the driving motor to move towards the edge of the lifting frame. The movable block is clamped and slides in the movable groove, and drives the driving gear to move through the vertical shaft, so that the driving gear switches from the state of contacting the second gear to the state of contacting the first gear. At this time, the driving gear meshes with the first gear, realizing the automatic switching function of the lifting drive of the collection basket and the seat, and enabling the collection basket and the seat to use the same power source for lifting. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the sectional structure of the lifting frame of the present utility model;

[0016] Figure 3 It is an exploded structure diagram of the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the collection basket of the present utility model;

[0018] Figure 5 It is a schematic diagram of the connection structure of the driving gear of the present utility model.

[0019] In the figure: 1. Lifting frame; 2. Support frame; 3. Collection basket; 4. Seat; 5. First chute; 6. First screw rod; 7. First bearing; 8. First gear; 9. Second chute; 10. Second screw rod; 11. Second bearing; 12. Second gear; 13. Driving gear; 14. Vertical shaft; 15. Movable block; 16. Movable groove; 17. Mounting seat; 18. Driving motor; 19. Double-acting cylinder; 20. First slider; 21. First screw hole; 22. Second slider; 23. Second screw hole. Detailed Description of the Invention

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Such as Figures 1 to 5As shown in the figure, the bottom lifting frame of the layered harvester in this embodiment includes a lifting frame 1, a support frame 2 installed on one side of the lifting frame 1, a collection basket 3 installed on one side of the lifting frame 1, and a seat 4 installed on the upper surface of the lifting frame 1. First sliding grooves 5 are provided on both the front and rear sides of the lifting frame 1. A first screw rod 6 is arranged inside the first sliding groove 5. A first gear 8 is installed at the upper end of the first screw rod 6. The number of the first screw rod 6, the first sliding groove 5, and the first gear 8 is two, and they are symmetrically distributed on both the front and rear sides of the lifting frame 1. A second sliding groove 9 is provided in the middle of the lifting frame 1. A second screw rod 10 is arranged inside the second sliding groove 9. A second gear 12 is installed at the upper end of the second screw rod 10. The number of the second screw rod 10, the second sliding groove 9, and the second gear 12 is two, and they are symmetrically arranged relative to the lifting frame 1 and are located between the two first sliding grooves 5. An activity groove 16 is provided at the top of the lifting frame 1. The inner walls on both sides of the activity groove 16 are recessed to form a clamping effect with the activity block 15. A driving gear 13 is arranged inside the activity groove 16 between the first gear 8 and the second gear 12. A vertical shaft 14 is arranged through the middle of the driving gear 13. The bottom of the vertical shaft 14 is rotationally connected to the activity block 15 through a bearing. The vertical shaft 14 penetrates through the driving gear 13. Activity blocks 15 are arranged through the upper and lower ends of the vertical shaft 14. The number of the activity blocks 15 is two, and they are symmetrically distributed on the upper and lower sides of the driving gear 13. The top of the activity block 15 located above is connected with a mounting seat 17. A driving motor 18 is installed on the mounting seat 17. The driving motor 18 is actually a motor with a forward and reverse circuit. The shaft end of the driving motor 18 is connected to the vertical shaft 14. The number of the driving motors 18 is two, and the two driving motors 18 are controlled to operate synchronously through a servo controller. In order to ensure that the driving gear 13 can be accurately meshed with the first gear 8 and the second gear 12 during movement, an electronic digital counter is applied to detect the number of rotation turns of the driving motor 18, and self-stop is realized by combining the built-in micro-switch and the contactor linkage, so that each operation of the driving motor 18 is a complete rotation, ensuring the accurate meshing of the driving gear 13 with the first gear 8 and the second gear 12. A two-way air cylinder 19 is connected to the side wall of the mounting seat 17 of the driving motor 18. The two-way air cylinder 19 is installed on the top of the lifting frame 1. The telescopic ends on both sides of the two-way air cylinder 19 are respectively connected to the two mounting seats 17. The actual model of the two-way air cylinder 19 is selected according to the actual size of the lifting frame 1.

[0024] Specifically, a first slider 20 is connected to one side of the support frame 2 close to the lifting frame 1. The cross-sections of the first slider 20 and the first sliding groove 5 are both T-shaped. The first slider 20 is stuck inside the first sliding groove 5. The first slider 20 is integrally connected to the support frame 2. A first screw hole 21 is penetrated through the middle of the first slider 20. The outer diameter of the first screw rod 6 is adapted to the inner diameter of the first screw hole 21. First bearings 7 are installed between the upper and lower ends of the first screw rod 6 and the lifting frame 1. The first screw rod 6 is rotationally connected to the lifting frame 1 through the first bearings 7. The first screw rod 6 penetrates through the first slider 20 through the first screw hole 21 to form a threaded connection. The first slider 20 is stuck in the first sliding groove 5 and slides. By rotating the first screw rod 6, the first screw rod 6 drives the first slider 20 through the first screw hole 21 to drive the support frame 2 to lift and lower. The support frame 2 bears the lifting and lowering of the seat 4 to adjust the height of the harvesting station for the staff.

[0025] Furthermore, a second slider 22 is connected to the middle of one side of the collection basket 3 close to the lifting frame 1. The cross-sections of the second slider 22 and the second sliding groove 9 are both T-shaped. The second slider 22 is stuck in the second sliding groove 9 and slides. The second slider 22 is fixedly welded to the collection basket 3. A second screw hole 23 is penetrated through the middle of the second slider 22. The outer diameter of the second screw rod 10 is adapted to the inner diameter of the second screw hole 23. Second bearings 11 are installed between the upper and lower ends of the second screw rod 10 and the lifting frame 1. The second screw rod 10 is rotationally connected to the lifting frame 1 through the second bearings 11. The second screw rod 10 penetrates through the second slider 22 through the second screw hole 23 to form a threaded connection. The second slider 22 is stuck in the second sliding groove 9 and slides. By rotating the second screw rod 10, the second screw rod 10 drives the second slider 22 to drive the collection basket 3 to lift and lower, achieving the purpose of lifting and conveying tobacco leaves by the collection basket 3.

[0026] Furthermore, the driving gear 13 meshes with the first gear 8 and the second gear 12 alternately. By extending the double-acting cylinder 19, the driving gear 13 is switched from the state of contacting the second gear 12 to the state of contacting the first gear 8. At this time, the driving gear 13 changes to mesh with the first gear 8, realizing the automatic switching function of the lifting drive of the collection basket 3 and the seat 4. The driving gear 13 is rotationally connected to the first gear 8 and the second gear 12. The lower end of the vertical shaft 14 is rotationally connected to the movable block 15 through a bearing. The upper end of the vertical shaft 14 is connected to the shaft end of the driving motor 18. By driving the vertical shaft 14 to rotate by the driving motor 18, the vertical shaft 14 drives the driving gear 13 to rotate, and the driving gear 13 drives the first gear 8 or the second gear 12 to rotate.

[0027] Furthermore, the movable block 15 is in the shape of a rectangular block. Cross-shaped protrusions are formed on both sides of the movable block 15. The protrusions on both sides of the movable block 15 just fit into the concave inner walls on both sides of the movable groove 16. The movable block 15 is stuck inside the movable groove 16 to form a sliding connection, enabling the movable block 15 to stably move inside the movable groove 16.

[0028] Further, the mounting seat 17 is L-shaped. The bottom of the mounting seat 17 is integrally connected to the movable block 15. The two-way cylinder 19 is installed at the center of the top of the lifting frame 1. The telescopic ends on both sides of the two-way cylinder 19 are respectively connected to the two mounting seats 17. By extending the two-way cylinder 19, the two mounting seats 17 are pushed away from each other, and the mounting seat 17 drives the movable block 15 and the driving motor 18 to move towards the edge of the lifting frame 1.

[0029] The usage method of this embodiment is as follows: When the user actually uses the semi-automatic tobacco harvester, first place the harvester on the ridge and drive. Start the two-way cylinder 19. By extending the two-way cylinder 19, the two mounting seats 17 are pushed away from each other. The mounting seat 17 drives the movable block 15 and the driving motor 18 to move towards the edge of the lifting frame 1. The movable block 15 slides in the movable groove 16. The movable block 15 drives the driving gear 13 to move through the vertical shaft 14, so that the driving gear 13 switches from the state of contacting the second gear 12 to the state of contacting the first gear 8. At this time, the driving gear 13 meshes with the first gear 8. Then start the driving motor 18. The shaft end of the driving motor 18 drives the vertical shaft 14 to rotate. The vertical shaft 14 drives the driving gear 13 to rotate. The driving gear 13 drives the first gear 8 to rotate. The first gear 8 drives the first screw 6 to rotate. The first screw 6 drives the first slider 20 to slide in the first chute 5 through the first screw hole 21. The first slider 20 drives the support frame 2 to lift, and the support frame 2 carries the seat 4 to lift, so as to adjust the height of the seat 4 to adapt to the harvesting height of the tobacco leaves. Then the staff sits on the seat 4 and controls the two-way cylinder 19 to contract. The two-way cylinder 19 pulls the two mounting seats 17 to reset. At this time, the driving gear 13 meshes with the second gear 12. During the driving process of the harvester, the staff picks the tobacco leaves on both sides and places them in the collection basket 3. After the collection basket 3 is full, the driving motor 18 is started to drive the vertical shaft 14 to rotate. The vertical shaft 14 drives the driving gear 13 to rotate. The driving gear 13 drives the second gear 12 to rotate. The second gear 12 drives the second screw 10 to rotate. The second screw 10 drives the second slider 22 to drive the collection basket 3 to rise, and conveys the tobacco leaves in the collection basket 3 upward.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bottom lifting frame of a stratified harvester, comprising a lifting frame (1), a support frame (2) mounted on one side of the lifting frame (1), a collecting basket (3) mounted on one side of the lifting frame (1), and a seat (4) mounted on the upper surface of the lifting frame (1), characterized in that: The lifting frame (1) is provided with a first slide groove (5) on both the front and rear sides, a first screw rod (6) is arranged inside the first slide groove (5), and a first gear (8) is installed on the upper end of the first screw rod (6). The lifting frame (1) is provided with a second slide groove (9) in the middle, a second screw rod (10) is arranged inside the second slide groove (9), and a second gear (12) is installed on the upper end of the second screw rod (10). The lifting frame (1) is provided with a movable groove (16) on the top, and a driving gear (13) is arranged inside the movable groove (16) between the first gear (8) and the second gear (12). A vertical shaft (14) is provided through the middle of the driving gear (13), and movable blocks (15) are provided through the upper and lower ends of the vertical shaft (14). The top of the movable block (15) at the top is connected to a mounting seat (17), a driving motor (18) is installed on the mounting seat (17), and a bidirectional cylinder (19) is connected to the side wall of the mounting seat (17).

2. The bottom lifting frame of the stratified harvester according to claim 1 is characterized in that: A first sliding block (20) is connected to a side of the support frame (2) close to the lifting frame (1); a first screw hole (21) is provided through the middle of the first sliding block (20); first bearings (7) are installed between the upper and lower ends of the first screw rod (6) and the lifting frame (1); the first screw rod (6) passes through the first sliding block (20) through the first screw hole (21) to form a threaded connection; the first sliding block (20) is clamped in the first sliding groove (5) and slides.

3. The bottom lifting frame of the stratified harvester according to claim 1 is characterized in that: A second sliding block (22) is connected to the middle of one side of the collecting basket (3) close to the lifting frame (1); a second screw hole (23) is provided through the middle of the second sliding block (22); second bearings (11) are installed between the upper and lower ends of the second screw rod (10) and the lifting frame (1); the second screw rod (10) passes through the second sliding block (22) through the second screw hole (23) to form a threaded connection; the second sliding block (22) is clamped in the second sliding groove (9) and slides.

4. The bottom lifting frame of the stratified harvester according to claim 1 is characterized in that: The driving gear (13) is alternately meshed with the first gear (8) and the second gear (12), and the driving gear (13) is rotationally connected with the first gear (8) and the second gear (12). The lower end of the vertical shaft (14) is rotationally connected to the movable block (15) via a bearing, and the upper end of the vertical shaft (14) is connected to the shaft end of the driving motor (18).

5. The bottom lifting frame of the stratified harvester according to claim 1 is characterized in that: The movable block (15) is in the shape of a rectangular block, with two sides of the movable block (15) protruding to form a cross shape, and the movable block (15) is clamped in the movable groove (16) to form a sliding connection.

6. The bottom lifting frame of the stratified harvester according to claim 1 is characterized in that: The mounting seat (17) is L-shaped, the bottom of the mounting seat (17) is integrally connected to the movable block (15), the bidirectional cylinder (19) is installed at the top center of the lifting frame (1), and the telescopic ends on both sides of the bidirectional cylinder (19) are respectively connected to the two mounting seats (17).

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