Transmission device of large seeder
By designing a transmission device that uses tractor traction, the mechanical transmission problem of large seeds without external power is solved, energy-saving and efficient sowing and fertilization are achieved, cost and maintenance difficulties are reduced, and seed quality and efficiency are improved.
Patent Information
- Application Number
- CN202411469338.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2024-12-27
AI Technical Summary
Existing large seeders rely on complex power systems and external power sources, resulting in high equipment costs, difficult maintenance and waste of energy, and it is difficult to achieve mechanical transmission of seed and fertilization mechanisms without external power.
A transmission device of a large seeder was designed, and the load-load wheel set was driven by a tractor traction, and the power transmission was realized through the transmission wheel set and the sprocket mechanism. The stability and flexibility of the power transmission were ensured in combination with hydraulic cylinders and spring devices, and the stability and flexibility of the power transmission were ensured. In operation, the transmission wheel set is lifted and lowered to avoid waste.
Mechanical transmission without external power is realized, power consumption and operating costs are reduced, seeding quality and efficiency are improved, maintenance costs are reduced, and the reliability and durability of the device are improved.
Smart Images
Figure CN119196257A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a transmission device for a large-scale seed drill. Background Art
[0002] With the rapid development of modern agriculture, agricultural mechanization has become a key way to improve agricultural production efficiency and reduce production costs. Under this trend, small agricultural machinery is gradually unable to meet the needs of large-scale and high-efficiency agricultural production. Therefore, the application of large agricultural machinery is becoming more and more extensive.
[0003] In the existing technology, many large-scale seed drills rely on complex power systems and external power sources to drive their seeding, fertilizing and other operating mechanisms. This not only increases the manufacturing cost and maintenance difficulty of the equipment, but may also lead to energy waste and environmental pollution. In response to these problems, the seed drill designed by our company proposed an innovative solution: relying on tractor traction, no power output (only the fan negative pressure is the tractor power output). However, how to realize the mechanical transmission of all mechanisms of the seed drill (sowing, fertilization) without external power has become a technical problem that needs to be solved urgently. Summary of the invention
[0004] The purpose of the present invention is to solve the above deficiencies in the prior art and to provide a transmission device for a large-scale seed drill.
[0005] A transmission device of a large-scale seed drill comprises a load-bearing wheel group, a transmission wheel, a transmission sprocket mechanism, and a speed regulating sprocket group. The load-bearing wheel group comprises a load-bearing wheel and a wheel bracket. The load-bearing wheel is rotatably connected to the wheel bracket. The transmission wheel and the transmission sprocket mechanism are installed in a mounting seat. The mounting seat is hinged to the wheel bracket. The outer surface of the transmission wheel is in contact with the load-bearing wheel. The speed regulating sprocket group is connected to the output end of the transmission sprocket mechanism, and the transmission wheel is connected to the input end of the transmission sprocket mechanism.
[0006] Furthermore, the mounting seat includes a first mounting seat, a second mounting seat, and the first mounting seat, the second mounting seat, and the wheel bracket are connected to form a U-shaped structure, one end of the first mounting seat is connected to one end of the second mounting seat, the other end of the second mounting seat is connected to one end of the wheel bracket, the other end of the wheel bracket is equipped with a load-bearing wheel, and the other end of the first mounting seat is equipped with a transmission wheel.
[0007] Furthermore, a hydraulic cylinder is provided on the wheel bracket, and a floating joint of the hydraulic cylinder is connected to the second mounting seat.
[0008] Further, the transmission sprocket mechanism includes a first transmission shaft, a second transmission shaft, a third transmission shaft, a third transmission shaft, a first sprocket mounted on a first mounting seat, a second sprocket, a third sprocket, a fourth sprocket and a fifth sprocket mounted on a second mounting seat.
[0009] The first sprocket and the transmission wheel are both sleeved on the first transmission shaft, the first sprocket, the second sprocket, the third sprocket, and the fourth sprocket are connected by the first chain, the third sprocket and the third sprocket are located below the first sprocket and the second sprocket, the third sprocket is located between the first sprocket and the fourth sprocket, the first sprocket, the second sprocket, and the third sprocket are located on the inner side of the first chain, and the fourth sprocket is located on the outer side of the first chain, the second transmission shaft passes through the first mounting seat, the second mounting seat, and the fourth sprocket, the fourth sprocket is connected to the fifth sprocket by the second chain, the fourth sprocket and the fifth sprocket are both located on the inner side of the second chain, the fifth sprocket and the speed regulating sprocket group are both sleeved on the third transmission shaft, and the third transmission shaft is penetrated by the second mounting seat.
[0010] Furthermore, tensioning sprockets are provided on the outer sides of the first chain and the second chain.
[0011] Furthermore, the first mounting seat includes two first mounting plates arranged in parallel and at intervals, a pin shaft is provided between the two first mounting plates, a screw rod is vertically and obliquely passed through the outer side surface of the pin shaft, a spring seat and a locking nut are provided on the screw rod, the bottom surface of the spring seat is connected to the pin shaft, a compression spring is provided between the locking nut and the spring seat, and the first transmission shaft and the second transmission shaft are both passed through the two first mounting plates.
[0012] Furthermore, a first connecting seat connected to the floating joint of the hydraulic cylinder is provided on the second mounting seat.
[0013] Furthermore, the second mounting seat and the wheel bracket are hinged via a rotating shaft.
[0014] Furthermore, a mudguard is provided on the wheel bracket, and the mudguard is an L-shaped bent plate, which includes a straight section and a vertical section. The vertical section is connected to the outer side surface of the wheel bracket through a transition plate, and the straight section is located obliquely above the load-bearing wheel. A gap of a predetermined distance is provided between the straight section and the outer arc surface of the load-bearing wheel.
[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:
[0016] This transmission device does not require external power input. It relies on the tractor to pull the load wheel group, and then the tires of the transmission wheel group attached to the load wheel group rotate to drive the sprockets to transmit power to complete the fertilization and sowing operations. This design reduces power consumption, reduces operating costs, and achieves the goal of energy saving and high efficiency.
[0017] The transmission wheel set is equipped with a compression spring. Through the elastic force of the spring, the transmission wheel set can be completely fitted on the load-bearing wheel set. Even in complex environments such as bumps or jumps, it can maintain a stable fit, ensuring the continuity and accuracy of power transmission, thereby improving the sowing quality.
[0018] A lifting cylinder is provided between the transmission wheel set and the load wheel set. By controlling the extension and retraction of the lifting cylinder, the lifting operation of the transmission wheel set can be easily realized. In the non-operating state, the lifting cylinder is lifted to completely separate the transmission wheel set from the load wheel set, so as to stop fertilizing and sowing, thus avoiding the waste of fertilizer and seeds. At the same time, this design is also convenient for the transportation and storage of the seeder.
[0019] In order to achieve synchronization of the sowing mechanisms on both sides, this transmission device is equipped with load-bearing wheels and transmission devices on both sides of the main frame, and uses the same square steel as power transmission. This design ensures the uniformity of sowing and fertilization on both sides, and improves the quality and efficiency of sowing operations.
[0020] There is a speed regulating sprocket in the middle area of the two transmission devices, so the owner can adjust the sowing amount according to the progress of the operation. This design enables the seeder to flexibly adapt to different operation requirements and improves the flexibility and adaptability of the sowing operation.
[0021] The transmission wheel set is equipped with screw rods, spring seats, compression springs and other parts to ensure the stability and durability of the transmission wheel set; the mounting seat is equipped with seat plates, connecting plates, square hole bearings and other parts to facilitate the insertion and installation of the subsequent transmission mechanism square steel; the load-bearing wheel set is equipped with scrapers, transition plates and other parts to solve the problem of mud adhering to the tires and affecting the progress of the operation. These detailed designs further optimize the performance of the transmission device and improve its reliability and durability.
[0022] The transmission device has a simple and compact structure, and the connections between the components are reasonable and easy to disassemble and repair. This design reduces maintenance costs and improves the overall performance and service life of the planter. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the transmission device of a large seed drill in working state;
[0024] Figure 2 It is a schematic diagram of the transmission device of a large seed drill in a non-working state;
[0025] Figure 3 It is a top view of the transmission device part structure of a large seed drill;
[0026] Figure 4 It is the assembly drawing of the parts on the first mounting seat;
[0027] Figure 5 is a top view of the first mounting base;
[0028] Figure 6 This is the assembly drawing of the sprocket on the second mounting seat;
[0029] Figure 7 It is the assembly drawing of the wheel bracket and the load wheel;
[0030] In the figure, 1, transmission wheel, 2, first mounting seat, 3, second mounting seat, 4, wheel bracket, 5, load wheel, 6, transition plate, 7, fender, 8, first sprocket, 9, second sprocket, 10, third sprocket, 11, fourth sprocket, 12, fifth sprocket, 13, tensioning sprocket, 14, hydraulic cylinder, 15, rotating shaft, 16, first chain, 17, second chain, 18, first transmission shaft, 19, second transmission shaft, 20, third transmission shaft, 21, speed regulating sprocket set, 22, pin shaft, 23, compression spring, 24, screw, 25, locking nut, 26, spring seat. DETAILED DESCRIPTION
[0031] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0032] like Figure 1-7 As shown, a transmission wheel 1, a first mounting seat 2, a second mounting seat 3, a wheel bracket 4, a load wheel 5, a transition plate 6, a fender 7, a first sprocket 8, a second sprocket 9, a third sprocket 10, a fourth sprocket 11, a fifth sprocket 12, a tensioning sprocket 13, a hydraulic cylinder 14, a rotating shaft 15, a first chain 16, a second chain 17, a first transmission shaft 18, a second transmission shaft 19, a third transmission shaft 20, a speed regulating sprocket set 21, a pin 22, a compression spring 23, a screw 24, a locking nut 25, and a spring seat 26;
[0033] A transmission device of a large seed drill comprises five groups of load wheels, a transmission wheel 1, a transmission sprocket mechanism, and a speed regulating sprocket group 21. The five groups of load wheels comprise load wheels 5 and a wheel bracket 4. The load wheels 5 are rotatably connected to the wheel bracket 4. The transmission wheel 1 and the transmission sprocket mechanism are installed in a mounting seat. The mounting seat is hinged to the wheel bracket 4. The outer surface of the transmission wheel 1 is fitted with the load wheel 5. The speed regulating sprocket group 21 is connected to the output end of the transmission sprocket mechanism, and the transmission wheel 1 is connected to the input end of the transmission sprocket mechanism.
[0034] In this example, the mounting seat includes a first mounting seat 2, a second mounting seat 3, and the first mounting seat 2, the second mounting seat 3, and a wheel bracket 4 are connected to form a U-shaped structure, one end of the first mounting seat 2 is connected to one end of the second mounting seat 3, and the other end of the second mounting seat 3 is connected to one end of the wheel bracket 4, and the other end of the wheel bracket 4 is installed with a load wheel 5, and the other end of the first mounting seat 2 is installed with a transmission wheel 1.
[0035] In this example, a hydraulic cylinder 14 is provided on the wheel bracket 4 , and a floating joint of the hydraulic cylinder 14 is connected to the second mounting seat 3 .
[0036] In this example, the transmission sprocket mechanism includes a first transmission shaft 18, a second transmission shaft 19, a third transmission shaft 20, a third transmission shaft 20, a first sprocket 8 mounted on the first mounting seat 2, a second sprocket 9, a third sprocket 10, a fourth sprocket 11 and a fifth sprocket 12 mounted on the second mounting seat 3.
[0037] The first sprocket 8 and the transmission wheel 1 are both sleeved on the first transmission shaft 18, the first sprocket 8, the second sprocket 9, the third sprocket 10, and the fourth sprocket 11 are connected by the first chain 16, the third sprocket 10, the third sprocket 10 are located below the first sprocket 8 and the second sprocket 9, the third sprocket 10 is located between the first sprocket 8 and the fourth sprocket 11, the first sprocket 8, the second sprocket 9, and the third sprocket 10 are located on the inner side of the first chain 16, and the fourth sprocket 11 is located on the outer side of the first chain 16, the second transmission shaft 19 passes through the first mounting seat 2, the second mounting seat 3, and the fourth sprocket 11, the fourth sprocket 11 is connected to the fifth sprocket 12 by the second chain 17, the fourth sprocket 11 and the fifth sprocket 12 are both located on the inner side of the second chain 17, the fifth sprocket 12 and the speed regulating sprocket set 21 are both sleeved on the third transmission shaft 20, and the third transmission shaft 20 is penetrated by the second mounting seat 3.
[0038] In this example, a tensioning sprocket 13 is disposed on the outer sides of the first chain 16 and the second chain 17 .
[0039] In this example, the first mounting seat 2 includes two first mounting plates arranged in parallel and at intervals, a pin shaft 22 is provided between the two first mounting plates, a screw rod 24 is vertically and obliquely penetrated through the outer side surface of the pin shaft 22, a spring seat 26 and a locking nut 25 are provided on the screw rod 24, the bottom surface of the spring seat 26 is connected to the pin shaft 22, a compression spring 23 is provided between the locking nut 25 and the spring seat 26, and the first transmission shaft 18 and the second transmission shaft 19 are both penetrated between the two first mounting plates.
[0040] In this example, a first connecting seat connected to a floating joint of the hydraulic cylinder 14 is disposed on the second mounting seat 3 .
[0041] In this example, the second mounting seat 3 and the wheel bracket 4 are hinged via a rotating shaft 15 .
[0042] In this example, a mudguard 7 is provided on the wheel bracket 4. The mudguard 7 is an L-shaped bent plate, which includes a straight section and a vertical section. The vertical section is connected to the outer side surface of the wheel bracket 4 through a transition plate 6. The straight section is located obliquely above the load-bearing wheel 5, and a gap of a predetermined distance is provided between the straight section and the outer arc surface of the load-bearing wheel 5.
[0043] Instructions for use: The load wheel 5 is driven by a tractor, and then the tire of the transmission wheel group 1 attached (fitted) to the load wheel group 5 rotates to drive each sprocket to transmit power to complete the fertilization and sowing operations; in order to prevent the transmission sprocket group from being affected by the environment and unable to be completely attached to the load wheel 5, a compression spring 23 is provided on the transmission wheel group 1, and the compression spring 23 acts on the first mounting seat 2 to make the transmission wheel 1 completely attached (fitted) to the load wheel group 5 to complete the operation requirements; in order to prevent the sowing and fertilization mechanism from still operating in a non-operating state, thereby wasting fertilizers and seeds;
[0044] At the same time, a hydraulic cylinder 14 is provided between the mounting seat for installing the transmission sprocket assembly and the wheel bracket 4. When not in operation (walking, transporting), the lifting cylinder is lifted to completely separate the transmission wheel 1 from the load wheel 5, so as to stop fertilizing and sowing.
[0045] Generally, large-scale seed drills are large in size and heavy in weight. There are two sets of 5 load wheels on both sides of the main frame. This figure shows only one set of transmission devices. In order to achieve synchronization of the seeding mechanisms on both sides, a set of transmission devices is also provided on the 5 sets of load wheels on the other side. Both sets of transmission devices use the same square steel as power transmission to achieve uniform seeding and fertilization on both sides. A speed regulating sprocket is provided in the middle area of the two transmission devices, and the owner can adjust it according to the progress of the operation (the seeding amount is adjusted according to the opening size of the lower beam).
[0046] The driving wheel 1 is close to the load wheel 5 by its own weight (no external power input is required, which reduces power consumption and operating costs), and then the chain and sprocket on the driving sprocket wheel mechanism drive the square steel for mechanical transmission to complete fertilization and sowing.
[0047] The transmission sprocket set is installed on the outside of the seeder and is used for the penetration of square steel and the transmission of mechanical power.
[0048] Due to the influence of the working environment (the moisture level of the soil), some soil adheres to the tires and affects the progress of the work. A scraper is provided on the 5 sets of load-bearing wheels to solve this problem; a cylinder connecting plate is welded on the wheel bracket 4 to facilitate the connection of the hydraulic cylinder 14.
[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A transmission device for a large seed drill, characterized in that: It includes a load-bearing wheel group, a transmission wheel, a transmission sprocket mechanism, and a speed regulating sprocket group. The load-bearing wheel group includes a load-bearing wheel and a wheel bracket. The load-bearing wheel is rotatably connected to the wheel bracket. The transmission wheel and the transmission sprocket mechanism are installed in a mounting seat. The mounting seat is hinged to the wheel bracket. The outer surface of the transmission wheel is in contact with the load-bearing wheel. The speed regulating sprocket group is connected to the output end of the transmission sprocket mechanism, and the transmission wheel is connected to the input end of the transmission sprocket mechanism.
2. The transmission device of a large-scale seed drill according to claim 1, characterized in that: The mounting seat includes a first mounting seat, a second mounting seat, and the first mounting seat, the second mounting seat, and the wheel bracket are connected to form a U-shaped structure, one end of the first mounting seat is connected to one end of the second mounting seat, the other end of the second mounting seat is connected to one end of the wheel bracket, the other end of the wheel bracket is equipped with a load-bearing wheel, and the other end of the first mounting seat is equipped with a transmission wheel.
3. The transmission device of a large-scale seed drill according to claim 2, characterized in that: The wheel bracket is provided with a hydraulic cylinder, and a floating joint of the hydraulic cylinder is connected to the second mounting seat.
4. The transmission device of a large-scale seed drill according to claim 2, characterized in that: The transmission sprocket mechanism comprises a first transmission shaft, a second transmission shaft, a third transmission shaft, a third transmission shaft, a first sprocket mounted on a first mounting seat, a second sprocket, a third sprocket, a fourth sprocket and a fifth sprocket mounted on a second mounting seat. The first sprocket and the transmission wheel are both sleeved on the first transmission shaft, the first sprocket, the second sprocket, the third sprocket, and the fourth sprocket are connected by the first chain, the third sprocket and the third sprocket are located below the first sprocket and the second sprocket, the third sprocket is located between the first sprocket and the fourth sprocket, the first sprocket, the second sprocket, and the third sprocket are located on the inner side of the first chain, and the fourth sprocket is located on the outer side of the first chain, the second transmission shaft passes through the first mounting seat, the second mounting seat, and the fourth sprocket, the fourth sprocket is connected to the fifth sprocket by the second chain, the fourth sprocket and the fifth sprocket are both located on the inner side of the second chain, the fifth sprocket and the speed regulating sprocket group are both sleeved on the third transmission shaft, and the third transmission shaft is penetrated by the second mounting seat.
5. The transmission device of a large-scale seed drill according to claim 4, characterized in that: The outer sides of the first chain and the second chain are both provided with tensioning sprockets.
6. The transmission device of a large-scale seed drill according to claim 4, characterized in that: The first mounting seat includes two first mounting plates arranged in parallel and at intervals, a pin shaft is arranged between the two first mounting plates, a screw rod is vertically and obliquely penetrated through the outer side surface of the pin shaft, a spring seat and a locking nut are arranged on the screw rod, the bottom surface of the spring seat is connected to the pin shaft, a compression spring is arranged between the locking nut and the spring seat, and the first transmission shaft and the second transmission shaft are both penetrated between the two first mounting plates.
7. The transmission device of a large-scale seed drill according to claim 3, characterized in that: The second mounting seat is provided with a first connecting seat connected with the floating joint of the hydraulic oil cylinder.
8. The transmission device of a large-scale seed drill according to claim 2, characterized in that: The second mounting seat is hinged to the wheel bracket via a rotating shaft.
9. The transmission device of a large-scale seed drill according to claim 1, characterized in that: The wheel bracket is provided with a mudguard, which is an L-shaped bent plate, including a straight section and a vertical section. The vertical section is connected to the outer side of the wheel bracket through a transition plate, and the straight section is located obliquely above the load-bearing wheel. A gap of a predetermined distance is provided between the straight section and the outer arc surface of the load-bearing wheel.