A height adjusting and rotating device suitable for tobacco field base plate in south hilly and mountainous area

Abstract

The utility model discloses a height adjustment and rotary device suitable for tobacco field base plate in south hilly and mountainous area relates to agricultural machinery equipment field, including rotary module, height adjustment module, bearing frame and work frame, the height adjustment module is installed on the bearing frame, the both sides of height adjustment module are fixedly connected bearing frame through frame respectively, the movable end of rotary module is fixedly connected with bearing frame, the fixed end of rotary module is fixedly connected walking chassis, work frame setting is in the height adjustment module middle, when facing different operation height demand, need not to rely on the height adjustment function of work part's own, and the device drives chain drive through servo electric jar, drives whole work frame to realize stable lifting, after completing single -trip operation, and the equipment only needs to execute cross -row operation and drives rotary device to rotate 180 DEG, can efficiently complete field turning.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery and equipment, specifically to a height adjustment and rotation device for a chassis suitable for tobacco fields in hilly and mountainous areas of southern China. Background Technology

[0002] As an important component of the national economy, the tobacco industry plays a vital role in promoting agricultural and rural development, supporting rural revitalization, and increasing tobacco farmers' income. Flue-cured tobacco, as the main raw material for cigarette production, is an important economic crop in my country. Currently, although some operations in flue-cured tobacco production have been mechanized, key processes such as fertilization, mulching, and harvesting still mainly rely on manual labor. This results in problems such as high labor intensity, low efficiency, long working hours, and high production costs. Therefore, promoting the mechanization of tobacco field operations has become an urgent need to improve the industry's efficiency.

[0003] Tobacco field machinery typically consists of two main parts: a chassis and working components. In the hilly and mountainous areas of southern my country, the main tobacco-producing regions, tobacco fields are mostly scattered small plots with irregular shapes and narrow headlands. This leads to difficulties in turning around in the field for various chassis, severely restricting operational efficiency. Furthermore, flue-cured tobacco requires different operating heights at different growth stages and under different growing conditions, while traditional working components often have a fixed height design, making flexible and precise height adjustment difficult, further limiting the adaptability and quality of the machinery. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide a height adjustment and slewing device for tobacco fields in hilly and mountainous areas of southern China. This invention eliminates the need to rely on the height adjustment function of the working components themselves when facing different operating height requirements. Instead, it uses a servo electric cylinder to drive a chain transmission, enabling the entire working frame to rise and fall smoothly. After completing a single operation, the equipment only needs to perform a cross-row operation and drive the slewing device to rotate 180° to efficiently complete field turning, greatly reducing the difficulty of turning operations in small tobacco fields in hilly and mountainous areas of southern China and enhancing the adaptability and maneuverability of the implement.

[0005] A height adjustment and rotation device for a chassis suitable for tobacco fields in hilly and mountainous areas of southern China includes a rotation module, a height adjustment module, a support frame, and a working frame. The height adjustment module is mounted on the support frame, and both sides of the height adjustment module are fixedly connected to the support frame via frames. The movable end of the rotation module is fixedly connected to the support frame, and the fixed end of the rotation module is fixedly connected to the chassis. The working frame is located in the middle of the height adjustment module and can move along the guide path of the height adjustment module. The working frame is connected to the height adjustment module.

[0006] Furthermore, the slewing module includes a slewing unit, a right-angle reducer, and a servo motor. The output end of the servo motor is connected to the input end of the right-angle reducer, the output end of the right-angle reducer is connected to the input end of the slewing unit, the movable side of the slewing unit is fixedly connected to the support frame, and a walking chassis is installed on the fixed end of the slewing unit.

[0007] Furthermore, the height adjustment module includes a lifting chain, a servo cylinder, a cylinder horizontal shaft top, a guide channel steel, fixing bolts, a second servo motor, and a frame. The guide channel steel consists of four rectangular sections, fixed to the support frame. The guide channel steel is also fixedly connected to the frame. The servo cylinders are symmetrically arranged, with their input ends connected to the output ends of the second servo motor. The second servo motor is mounted on the side wall of the support frame, and the servo cylinders are mounted on one side of the frame. The electric push rod head of the servo cylinder is equipped with a cylinder horizontal shaft top. The cylinder horizontal shaft top is an optical shaft with bearings mounted at both ends. The bearings are matched with the lifting chain. One end of each lifting chain is fixedly connected to the upper end of the frame, and the other end of each lifting chain is fixedly connected to the frame body.

[0008] Furthermore, the working frame includes a frame body, a front anti-tipping bearing assembly, a rear anti-sway bearing assembly, a preload spring, and a front anti-sway bearing assembly. The front anti-tipping bearing assembly, the rear anti-sway bearing assembly, the preload spring, and the front anti-sway bearing assembly are all mounted on the frame body. The front anti-tipping bearing assembly and the rear anti-tipping bearing assembly are diagonally distributed. The rear anti-sway bearing assembly and the front anti-sway bearing assembly are slidably connected to the guide channel steel.

[0009] Furthermore, the front anti-tipping bearing assembly and the rear anti-tipping bearing assembly each include two gantry bearings distributed in the vertical direction, and the outer rings of the bearings abut against the two side flanges of the guide channel steel.

[0010] Furthermore, the rear anti-sway bearing assembly and the front anti-sway bearing assembly include two bearing U-shaped forks with deep groove ball bearings installed vertically. The deep groove ball bearings are fixedly connected to the bearing shaft, and the bearing shaft is rotatably connected to the bearing U-shaped forks. The bearing U-shaped forks are fixedly connected to the threaded shaft, and the preload spring is sleeved on the threaded shaft. A bushing is fixedly installed on the main body of the working frame, and the bushing is slidably connected to the threaded shaft. The threaded shaft is screwed with a preload bolt. By rotating the preload bolt, the position of the threaded shaft is adjusted to ensure that the outer ring of the deep groove ball bearing and the web of the guide channel steel are always in contact with each other.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are: The machine adopts a modular design architecture. The slewing unit in its slewing module can be adapted to various types of walking chassis, enabling quick docking and functional integration. The working frame can be flexibly equipped with different working parts according to actual operation needs, thus achieving multi-functionality in tobacco field operations. The structure is reliable and the control is precise, effectively simplifying the structural design of the working parts and reducing the overall manufacturing cost and maintenance difficulty. After completing a single operation, the equipment only needs to perform a cross-row operation and drive the slewing device to rotate 180° to efficiently complete the field turning, which greatly reduces the difficulty of turning operations in small tobacco fields in the hilly and mountainous areas of the south and enhances the adaptability and passability of the machinery. When faced with different working height requirements, there is no need to rely on the height adjustment function of the working parts themselves. This device uses a servo electric cylinder to drive the chain transmission, which drives the entire working frame to achieve smooth lifting and lowering. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the lifting and rotating device of this utility model; Figure 2 This is a structural diagram of the rotary module; Figure 3 This is a schematic diagram of the connection method of the rotary device; Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the height adjustment device of this utility model; Figure 6 This is a schematic diagram of the working frame of this utility model; Figure 7 For the present utility model Figure 4 A magnified view of a portion of point A in the middle.

[0013] In the diagram: 1. Rotation module; 5. Rotation unit; 6. Right-angle reducer; 7. Servo motor 1; 8. Walking chassis; 9. Bearing frame connecting plate; 2. Height adjustment module; 10. Lifting chain; 11. Servo electric cylinder; 12. Electric cylinder horizontal shaft head; 13. Guide channel steel; 14. Fixing bolts; 15. Servo motor II; 16. Frame; 3. Support frame; 4. Working frame; 17. Frame body; 18. Front anti-tipping bearing assembly; 19. Rear anti-sway bearing assembly; 20. Rear anti-tipping bearing assembly; 21. Preload spring; 22. Front anti-sway bearing assembly; 23. Bushing; 24. Threaded shaft; 25. Preload bolt; 26. Deep groove ball bearing; 27. Bearing shaft; 28. Bearing U-shaped fork. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figure 1 As shown, a height adjustment and rotation device suitable for tobacco fields in hilly and mountainous areas of southern China includes a rotation module 1, a height adjustment module 2, a support frame 3, and a working frame 4. The height adjustment module 2 is mounted on the support frame 3, and both sides of the height adjustment module 2 are fixedly connected to the support frame 3 via frames 16. The movable end of the rotation module 1 is fixedly connected to the support frame 3, and the fixed end of the rotation module 1 is fixedly connected to the traveling chassis 8. The working frame 4 is located in the middle of the height adjustment module 2 and can move along the guide path of the height adjustment module 2. The working frame 4 is connected to the height adjustment module 2.

[0015] The height adjustment module 2 is welded to the bearing frame 3 and reinforced by the frame 16. The movable end of the slewing module 1 is connected to the bearing frame 3 by high-strength bolts, and the fixed end of the slewing module 1 can be connected to the traveling chassis 8 by bolts. The working frame 4 is placed in the middle of the height adjustment module 2 and moves along the guide path of the height adjustment module 2. The working frame 4 is connected to the height adjustment module 2.

[0016] The rotary module 1 includes a rotary unit 5, a right-angle reducer 6, and a servo motor 7. The output end of the servo motor 7 is connected to the input end of the right-angle reducer 6, and the output end of the right-angle reducer 6 is connected to the input end of the rotary unit 5. The movable side of the rotary unit 5 is fixedly connected to the support frame 3, and a walking chassis 8 is installed on the fixed end of the rotary unit 5.

[0017] In this embodiment, the rotary module 1 mainly includes a rotary unit 5, a right-angle reducer 6, and a servo motor 7. The rotary unit 5 is an electric turntable with one end fixed and the other end driven by the motor to rotate. The structure of the rotary module 1 is as follows: Figure 2As shown, the servo motor 7 completes the power reversal transmission and speed reduction / torque increase through the right-angle reducer 6. The output end of the right-angle reducer 6 is connected to the input end of the rotary unit 5. The movable side of the rotary unit 5 is connected to the carrier frame 3 by bolts, and the fixed end of the rotary unit 5 is connected to the chassis 8 by bolts. The movable end of the rotary unit is fixedly connected to the carrier frame connecting plate 9, and the carrier frame connecting plate 9 is fixedly connected to the carrier frame 3. The operation of the rotary unit 5 can drive the chassis 8 and the carrier frame connecting plate 9 to move, and can drive the carrier frame 3 and working parts to achieve 360° rotation. The carrier frame connecting plate 9 is hollow in the middle, and cooperates with the rotary unit 5 as follows: Figure 3 As shown, the working frame 4 is connected to the four sets of lifting chains 10 in the height adjustment module 2 by bolts, and the other end of the lifting chain 10 is connected to the frame 16 in the height adjustment module 2 by bolts.

[0018] The rotary unit 5 includes a fixed ring and a rotating ring. The fixed ring of the rotary unit 5 is a fixed end, and the rotating ring of the rotary unit 5 is a movable end.

[0019] like Figure 5 As shown, the height adjustment module 2 includes a lifting chain 10, a servo cylinder 11, a cylinder horizontal shaft top 12, a guide channel steel 13, fixing bolts 14, a second servo motor 15, and a frame 16. The guide channel steel 13 consists of four rods arranged in a rectangular pattern and is fixed to the support frame 3. The guide channel steel 13 is also fixedly connected to the frame 16. The servo cylinders 11 are symmetrically arranged, with their input ends connected to the output ends of the second servo motor 15. The second servo motor 15 is installed on the side wall of the support frame 3, and the servo cylinder 11 is installed on one side of the frame 16. The electric push rod head of the servo cylinder 11 is equipped with a cylinder horizontal shaft top 12, which is an optical shaft with bearings installed at both ends. The bearings are matched with the lifting chains 10. One end of each lifting chain 10 is fixedly connected to the upper end of the frame 16, and the other end of each lifting chain 10 is fixedly connected to the frame body 17.

[0020] Four guide channel steels 13 are welded to the bearing frame 3 and reinforced and fixed by the frame 16. There are two sets of servo cylinders 11, driven by servo motor 2 15. Servo motor 2 15 is fixed to the support frame 3 by bolts, and servo cylinder 11 is fixed to the frame 16 by bolts. The two sets of servo cylinders 11 are symmetrically distributed. The electric push rod head of the servo cylinder 11 is connected to the cylinder horizontal shaft top head 12 by thread. One end of the lifting chain 10 is fixed to the frame 16, and the other end is fixed to the frame body 17, both connected by fixing bolts 14. The rise or fall of the electric push rod head of the servo cylinder 11 can drive the cylinder horizontal shaft top head 12 to move. The bearings on both sides act as moving pulleys to drive the lifting chain 10 to move, thereby driving the movement of the working frame 4, realizing the smooth lifting or lowering of the working frame 4, thus realizing the flexible adjustment of the working height. After completing a single operation, the equipment only needs to cross the ridge and control the rotation module 1 to rotate 180° to quickly complete the field turn and continue the next stage of operation. The height adjustment module 2 can realize the stable lifting and lowering of the working parts, ensuring adaptability under different working height requirements.

[0021] like Figure 6 As shown, the working frame 4 includes a frame body 17, a front anti-tipping bearing assembly 18, a rear anti-sway bearing assembly 19, a rear anti-tipping bearing assembly 20, a preload spring 21, and a front anti-sway bearing assembly 22. The front anti-tipping bearing assembly 18, the rear anti-sway bearing assembly 19, the rear anti-tipping bearing assembly 20, the preload spring 21, and the front anti-sway bearing assembly 22 are all mounted on the frame body 17. The front anti-tipping bearing assembly 18 and the rear anti-tipping bearing assembly 20 are diagonally distributed. The rear anti-sway bearing assembly 19 and the front anti-sway bearing assembly 22 are slidably connected to the guide channel steel 13.

[0022] The front anti-tipping bearing assembly 18 and the rear anti-tipping bearing assembly 20 each include two gantry bearings distributed in a vertical direction, and their outer rings abut against the two side flanges of the guide channel steel 13.

[0023] The rear anti-sway bearing assembly 19 and the front anti-sway bearing assembly 22 include two bearing U-shaped forks 28 vertically distributed with deep groove ball bearings 26 mounted on them. The deep groove ball bearings 26 are fixedly connected to the bearing shaft 27, and the bearing shaft 27 is rotatably connected to the bearing U-shaped forks 28. The bearing U-shaped forks 28 are fixedly connected to the threaded shaft 24, and the preload spring 21 is sleeved on the threaded shaft 24. A bushing 23 is fixedly installed on the main body of the working frame 4, and the bushing 23 is slidably connected to the threaded shaft 24. The threaded shaft 24 is screwed with a preload bolt 25. By rotating the preload bolt 25, the position of the threaded shaft 24 is adjusted to ensure that the outer ring of the deep groove ball bearing 26 and the web of the guide channel steel 13 are always in contact with each other.

[0024] In this embodiment, the frame body 17 is currently adapted to the clamping and cutting device in the upper leaf harvester of flue-cured tobacco. In the future, its shape can be adjusted according to actual working needs, so as to be equipped with different working parts to achieve the corresponding functions. If it is necessary to replace the working parts according to actual working needs in the future, since the frame body 17 can be adjusted according to actual working needs, only the frame body 17 needs to be modified accordingly to be equipped with different working parts to achieve the corresponding functions, thereby improving the versatility of the equipment.

[0025] The front anti-tipping bearing assembly 18, the rear anti-sway bearing assembly 19, the rear anti-tipping bearing assembly 20, the preload spring 21, and the front anti-sway bearing assembly 22 are all connected to the main body of the working frame 4 via threaded shafts 24. The front anti-tipping bearing assembly 18 and the rear anti-tipping bearing assembly 20 are both gantry bearings, with their outer rings contacting the left and right flanges of the guide channel steel 13. Figure 6 As shown, the bearing U-shaped fork 28 is welded to the threaded shaft 24, and a preload spring 21 is fitted on the threaded shaft 24. A bushing 23 is welded inside the main body of the working frame 4, and the bushing 23 slides in cooperation with the threaded shaft 24. The preload is preloaded by the preload bolt 25 in conjunction with the preload spring 21. Rotating the preload bolt 25 adjusts the position of the threaded shaft 24, which in turn adjusts the position of the bearing U-shaped fork 28. The preload spring 21 achieves adaptive elastic contact with the web of the guide channel steel 13, ensuring that the outer ring of the deep groove ball bearing 26 always remains in contact with the web of the guide channel steel 13. The front anti-tipping bearing assembly 18 and the rear anti-tipping bearing assembly 20 are diagonally distributed, and the rear anti-sway bearing assembly 19 and the front anti-sway bearing assembly 22 are also diagonally distributed, which is more stable.

[0026] Under the preload force of the preload spring 21, the outer ring of the deep groove ball bearing 26 always maintains elastic contact with the web of the guide channel steel 13, thereby effectively suppressing the left-right swaying phenomenon generated by the working frame 4 during the lifting process. The method of using this utility model is as follows: When the equipment arrives at the work site, according to the actual terrain of the tobacco field and the work requirements, the height adjustment module 2 is activated, and the servo electric cylinder 11 is driven by the servo motor 15. The electric push rod head of the servo electric cylinder 11 rises or falls, driving the horizontal shaft top head 12 of the electric cylinder to move. The bearings on both sides act as moving pulleys, driving the lifting chain 10 to move, thereby making the working frame 4 smoothly rise or fall to the appropriate working height. In this process, the guide channel steel 13 plays a precise guiding role, ensuring that the working frame 4 moves along the predetermined path. At the same time, the front anti-tipping bearing group 18, the rear anti-sway bearing group 19, the rear anti-tipping bearing group 20 and the front anti-sway bearing group 22 work together to effectively suppress the left and right swaying and tipping of the working frame 4 during the lifting process, ensuring the stability of the working frame 4. After height adjustment, a single-pass operation is performed. If a change in operating direction is required, the equipment only needs to cross the ridge after completing the single-pass operation, and then control the slewing module 1 to rotate 180°. At this time, the output end of the servo motor 7 drives the input end of the right-angle reducer 6 to rotate. After the right-angle reducer 6 completes the power reversal transmission and speed reduction and torque increase, its output end drives the slewing unit 5 to rotate. The movable side of the slewing unit 5 is fixedly connected to the bearing frame 3, thereby driving the bearing frame 3 and working parts to achieve a 360° rotation, realizing a quick turn in the field to continue the next stage of operation.

[0027] The above-disclosed embodiments are merely specific examples of this utility model. However, this utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A height adjustment and rotation device for a chassis suitable for tobacco fields in hilly and mountainous areas of southern China. Its characteristics are: The system includes a slewing module (1), a height adjustment module (2), a support frame (3), and a working frame (4). The height adjustment module (2) is mounted on the support frame (3). The two sides of the height adjustment module (2) are fixedly connected to the support frame (3) through frames (16). The movable end of the slewing module (1) is fixedly connected to the support frame (3). The fixed end of the slewing module (1) is fixedly connected to the traveling chassis (8). The working frame (4) is located in the middle of the height adjustment module (2). The working frame (4) can move along the guide path of the height adjustment module (2). The working frame (4) is connected to the height adjustment module (2).

2. The height adjustment and rotation device for a chassis suitable for tobacco fields in hilly and mountainous areas of southern China, as described in claim 1, is characterized in that... The rotary module (1) includes a rotary unit (5), a right-angle reducer (6) and a servo motor (7). The output end of the servo motor (7) is connected to the input end of the right-angle reducer (6). The output end of the right-angle reducer (6) is connected to the input end of the rotary unit (5). The movable side of the rotary unit (5) is fixedly connected to the carrier frame (3). A walking chassis (8) is installed on the fixed end of the rotary unit (5).

3. The height adjustment and rotation device for a chassis in tobacco fields in hilly and mountainous areas of southern China, as described in claim 2, is characterized in that... The height adjustment module (2) includes a lifting chain (10), a servo electric cylinder (11), a cylinder horizontal shaft top (12), guide channel steel (13), fixing bolts (14), a second servo motor (15), and a frame (16). The guide channel steel (13) consists of four rods arranged in a rectangular pattern. The guide channel steel (13) is fixed on the bearing frame (3). The guide channel steel is also fixedly connected to the frame (16). The servo electric cylinders (11) are symmetrically arranged, and their input ends are respectively connected to the output ends of the second servo motor (15). The servo motor 2 (15) is installed on the side wall of the bearing frame (3), the servo cylinder (11) is installed on one side of the frame (16), the electric push rod head of the servo cylinder (11) is equipped with the cylinder horizontal shaft top head (12), the cylinder horizontal shaft top head (12) is an optical shaft with bearings installed at both ends, the bearings are matched with the lifting chain (10), one end of each lifting chain (10) is fixedly connected to the upper end of the frame (16), and the other end of each lifting chain (10) is fixedly connected to the frame body (17).

4. The height adjustment and rotation device for a chassis in tobacco fields in hilly and mountainous areas of southern China, as described in claim 3, is characterized in that... The working frame (4) includes a frame body (17), a front anti-tipping bearing assembly (18), a rear anti-sway bearing assembly (19), a rear anti-tipping bearing assembly (20), a preload spring (21), and a front anti-sway bearing assembly (22). The front anti-tipping bearing assembly (18), the rear anti-sway bearing assembly (19), the rear anti-tipping bearing assembly (20), the preload spring (21), and the front anti-sway bearing assembly (22) are all installed on the frame body (17). The front anti-tipping bearing assembly (18) and the rear anti-tipping bearing assembly (20) are diagonally distributed. The rear anti-sway bearing assembly (19) and the front anti-sway bearing assembly (22) are slidably connected to the guide channel steel (13). The rear anti-sway bearing assembly (19) and the front anti-sway bearing assembly (22) are diagonally distributed.

5. The height adjustment and rotation device for a chassis in tobacco fields in hilly and mountainous areas of southern China, as described in claim 4, is characterized in that... The front anti-tipping bearing assembly (18) and the rear anti-tipping bearing assembly (20) each include two gantry bearings distributed in the vertical direction, and their outer rings abut against the two side flanges of the guide channel steel (13).

6. The height adjustment and rotation device for a chassis suitable for tobacco fields in hilly and mountainous areas of southern China, as described in claim 4, is characterized in that... The rear anti-sway bearing assembly (19) and the front anti-sway bearing assembly (22) include two bearing U-shaped forks (28) with deep groove ball bearings (26) installed vertically. The deep groove ball bearings (26) are fixedly connected to the bearing shaft (27). The bearing shaft (27) is rotatably connected to the bearing U-shaped fork (28). The bearing U-shaped fork (28) is fixedly connected to the threaded shaft (24). The threaded shaft (24) is fitted with the preload spring (21). The main body of the working frame (4) is fixedly provided with a bushing (23). The bushing (23) is slidably connected to the threaded shaft (24). The threaded shaft (24) is screwed with a preload bolt (25). By rotating the preload bolt (25), the position of the threaded shaft (24) is adjusted to ensure that the outer ring of the deep groove ball bearing (26) and the web of the guide channel steel (13) always abut against each other.

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