Automatic balancing structure and seeder thereof

Abstract

The utility model relates to the technical field of agricultural equipment, and discloses an automatic balancing structure and a seeder thereof. The automatic balancing structure comprises a main rack, an auxiliary rack, a lifting mechanism, an automatic balancing device and a positioning pin; the main rack is connected to the tail of a tractor through a lifting mechanism, and the auxiliary rack is movably arranged on the top of the main rack through a positioning device, so that the main rack and the auxiliary rack can be connected together in an up-down movable mode, and the corresponding function of automatic balance is achieved. The automatic balancing device comprises a hoisting balance bridge, and the hoisting balance bridge suspends the auxiliary rack through a hoisting spring; damping devices are arranged at the bottom of the auxiliary rack and the top of the main rack. A plurality of sliding plate ditching dies are symmetrically arranged at the bottom of an auxiliary rack of the seeding machine, and the sliding plate ditching dies are in an aircraft wing shape. The hoisting spring is used for hoisting the auxiliary rack, so that the overall stability can be obviously improved, and part of load can be removed; the main rack and the auxiliary rack can be connected together in an up-and-down movable mode, and the corresponding function of automatic balancing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to an automatic balancing structure and a seed drill thereof. Background Art

[0002] With the strong support of national policies and modern agriculture, the development of agricultural technology has shown a rapid improvement. One of the core driving forces of agricultural modernization is large-scale crop planting. Scaling not only means the expansion of planting area, but more importantly, through intensive management, scientific and technological application and resource integration, the close connection and optimization and upgrading of various links of agricultural production have been achieved.

[0003] Compared with transplanting rice seedlings, rice seed sowing saves manpower and material resources, but the existing sowing is mostly done manually. With the widespread promotion of large-scale crop planting, mechanical seeders are needed to sow rice seeds on a large scale. When existing mechanical seeders are sown on uneven terrain, they are prone to shaking and cannot maintain balance, resulting in uneven rice seed sowing, missed sowing and re-seeding, which leads to uneven seedling emergence.

[0004] For example, a tractor rear suspension electrically controlled automatic adjustment balancing device (CN105027718A) detects whether the vehicle body is in a horizontal state through a level sensor, controls the extension or retraction of the oil cylinder by controlling the electromagnetic reversing valve, and outputs a signal to the controller through a cylinder length input sensor synchronized with the oil cylinder for feedback calculation, so that the agricultural machinery can find the balance point in the shortest time; however, there is a certain delay between the electromagnetic reversing valve of the automatic adjustment balancing device receiving the control signal and the actual action, which may cause untimely adjustment on rapidly changing terrain, resulting in the phenomenon of rice seeds being missed or re-sown. Utility Model Content

[0005] The utility model provides an automatic balancing structure to overcome the technical problems existing in the above-mentioned prior art;

[0006] Another object of the present invention is to provide a seed drill.

[0007] The agricultural multifunctional seeder of the utility model is suitable for farmland with a relatively large area on a plain or a gentle slope, and can be used for crops such as rice, corn, soybean, etc. that require precise sowing.

[0008] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0009] An automatic balancing structure comprises: a main frame, a sub-frame, a lifting mechanism, an automatic balancing device and a positioning pin; the main frame is connected to the tail of a tractor through the lifting mechanism; an automatic balancing device is also arranged between the sub-frame and the lifting mechanism to maintain the balance of the sub-frame; the sub-frame is movably arranged on the top of the main frame through the positioning device;

[0010] The automatic balancing device comprises a hoisting balancing bridge, and the hoisting balancing bridge suspends the auxiliary frame through a hoisting spring; a shock absorbing device is arranged at the bottom of the auxiliary frame and the top of the main frame.

[0011] Preferably, the main frame is provided with a connecting plate, and the lifting adjustment rod and the lifting arm are respectively hinged to the connecting plate.

[0012] Preferably, a sliding balancing mechanism for reducing the up and down shaking of the auxiliary frame is provided between the lifting mechanism and the connecting plate.

[0013] Furthermore, the lifting mechanism includes a lifting adjustment rod and a lifting arm; the lifting adjustment rod and the lifting arm are respectively hinged to the main frame.

[0014] Preferably, the support rod is installed on the top of the lifting adjustment rod.

[0015] Furthermore, the hoisting balance bridge includes a support rod, a transverse stretch rod and a hoisting spring; the support rod is arranged on the top of the lifting mechanism, and the transverse stretch rod is arranged on the top of the support rod; the transverse stretch rod is connected to the sub-frame through several groups of hoisting springs to maintain the balance of the sub-frame.

[0016] Preferably, the positioning device and the shock absorbing device may be the same structural member having positioning and shock absorbing functions, or multiple structural members having different functions.

[0017] Preferably, the positioning device is a positioning pin, and the auxiliary frame is movably arranged on the top of the main frame through the positioning pin.

[0018] Furthermore, the positioning pin includes a positioning pin seat and a positioning pin head; the positioning pin seat is provided with a socket for the positioning pin head to be inserted, the end surface of the positioning pin head close to the positioning pin seat is provided with a groove, and a supporting spring is installed between the socket and the groove.

[0019] Furthermore, the outer wall of the positioning pin head is also provided with a pin head limiting groove, and the positioning pin seat is threadedly connected with a bolt, and the bolt extends into the pin head limiting groove.

[0020] Furthermore, a plurality of skateboard grooving molds are symmetrically arranged at the bottom of the auxiliary frame, and the skateboard grooving molds are in the shape of airplane wings.

[0021] Furthermore, the skateboard ditching mold is provided with a stretchable adjustment device, and the skateboard ditching mold is detachably connected to the bottom of the auxiliary frame through the stretchable adjustment device.

[0022] Preferably, a skateboard grooving mold is also provided at the middle bottom of the auxiliary frame.

[0023] Furthermore, the auxiliary frame is also provided with a fertilizer spreading device, a sowing device and a spraying device; the fertilizer spreading device is installed on the auxiliary frame (3) and is used for spraying fertilizer; the sowing device is arranged at the rear side of the fertilizer spreading device and is used for spraying seeds; the spraying device is arranged at the rear side of the sowing device and is used for spraying pesticides.

[0024] Furthermore, the sowing device includes a plurality of funnels, an intelligent seeding device and a screening box for evenly screening the seeds; the funnel is arranged on the top of the screening box through a bracket for evenly discharging the seeds; a leakage cover for closing the leakage hole is provided at the bottom of the funnel, and the intelligent seeding device is connected to a plurality of funnels for controlling the opening of the leakage cover at the bottom of the funnel.

[0025] Furthermore, the auxiliary frame is also provided with a plate rake, which includes a movable plate and a tillage assembly for turning the soil, the movable plate can be rotatably arranged at the rear bottom of the sowing device, and the tillage assembly is arranged at intervals at the bottom of the movable plate.

[0026] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0027] ①Set the hoisting balance bridge on the lifting mechanism. The hoisting balance bridge suspends the sub-frame through the hoisting spring, which can effectively reduce the left and right shaking of the sub-frame.

[0028] A support rod is connected to the lifting arm of the lifting mechanism, and a transverse shoulder rod about 2 meters long is installed on the support rod. The transverse shoulder rod is provided with several groups of lifting springs for hanging the sub-frame. After the transverse shoulder rod is connected to the sub-frame with the lifting spring, it helps the sub-frame to resist lateral force during movement and prevents the sub-frame from shaking or shifting, especially when working on rough ground, which can significantly improve the overall stability.

[0029] ② Setting the sliding balance mechanism between the sub-frame and the connecting plate can effectively reduce the up and down shaking of the sub-frame.

[0030] The sliding balancing mechanism includes a fixed frame, a shock-absorbing spring and a movable frame. The fixed frame is connected to the sub-frame, and the movable frame is connected to the connecting plate. The movable frame is installed on the fixed frame through the shock-absorbing spring and can slide along the height direction of the fixed frame. It can be combined into a supporting combination for the entire sub-frame, which can effectively reduce the up and down shaking of the sub-frame and significantly improve the overall stability.

[0031] ③ The main frame is movably connected to the auxiliary frame, and the auxiliary frame is movably set on the top of the main frame through the positioning pin latch;

[0032] The main frame and the auxiliary frame are consistent in size and specifications. The main frame is connected to the tractor through a lifting mechanism. Locating pins are welded on the outer edges of the auxiliary frame and the main frame, and then the locating pins of the auxiliary frame are connected up and down with the locating pins on the outer edge of the main frame. Through a combination of multiple groups of front, back, left and right locating pins, the main and auxiliary frames can be connected together in an upward and downward manner. Shock-absorbing devices are provided at the bottom of the auxiliary frame and the top of the main frame to achieve the corresponding function of automatic balancing.

[0033] ④ A plurality of slide plate ditching moulds are symmetrically arranged at the bottom of the auxiliary frame to ensure the stable operation of the seeder; a larger slide plate ditching mould is installed on each side of the bottom of the auxiliary frame. The slide plate ditching mould is in the shape of an airplane wing, and the extended slide plate ditching mould can be flexibly installed and disassembled. The slide plate ditching mould can support the balance of the left and right sides of the bottom of the auxiliary frame, thereby ensuring the stable operation of the seeder; there is also a slide plate ditching mould in the middle of the bottom of the auxiliary frame, which can ditch and drain water while realizing automatic parallelism. In the future, a water trough will be added to realize wet irrigation of the paddy field to make the water distribution more even. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is the structural schematic diagram of the seed drill;

[0036] Figure 2 This is a top view of the seeder;

[0037] Figure 3 It is a side view of the seeder;

[0038] Figure 4 It is a connection diagram of the automatic balancing device and the auxiliary frame;

[0039] Figure 5 is a cross-sectional view of the positioning pin;

[0040] Figure 6 It is a structural schematic diagram of a plate rake;

[0041] Figure 7 It is a structural schematic diagram of the skateboard groove die;

[0042] Figure 8 It is a structural schematic diagram of a sliding balancing mechanism;

[0043] Fig. 9 is a schematic diagram of the structure of the diversion device;

[0044] Fig.10 This is a schematic diagram of the structure of Example 4.

[0045] in,

[0046] 1. Tractor;

[0047] 2. Main frame;

[0048] 3. Auxiliary frame;

[0049] 4. Lifting mechanism; 401. Lifting adjustment rod; 402. Lifting arm;

[0050] 5. Automatic balancing device; 501. Connecting plate; 502. Support rod; 503. Transverse carrying rod; 504. Hoisting spring;

[0051] 6. Positioning pin; 601. Positioning pin seat; 6011. Socket; 602. Positioning pin head; 6021. Groove; 6022. Pin head limit groove; 603. Top support spring; 604. Bolt;

[0052] 7. Skateboard groove mold;

[0053] 8. Fertilizer spreading device;

[0054] 9. Seeding device; 901. Funnel; 902. Intelligent seeding equipment; 903. Screening box;

[0055] 10. Spraying device;

[0056] 11. Plate rake; 1101. movable plate; 1102. soil turning assembly;

[0057] 12. Diversion device;

[0058] 13. Sliding balancing mechanism; 1301. Fixed frame; 1302. Shock-absorbing spring; 1303. Movable frame. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the described embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] Example 1

[0062] like Figure 1-8 As shown, this embodiment discloses an automatic balancing structure, including a main frame 2, a sub-frame 3, a lifting mechanism 4, an automatic balancing device 5 and a positioning pin 6; the main frame 2 is connected to the tail of the tractor 1 through the lifting mechanism 4; an automatic balancing device 5 is also provided between the sub-frame 3 and the lifting mechanism 4, for maintaining the balance of the sub-frame 3; the sub-frame 3 is movably arranged on the top of the main frame 2 by the positioning pin 6;

[0063] The automatic balancing device 5 includes a hoisting balancing bridge; the hoisting balancing bridge suspends the auxiliary frame through a hoisting spring; a shock absorbing device is provided at the bottom of the auxiliary frame 3 and the top of the main frame 2 to reduce the shaking of the auxiliary frame 3.

[0064] The main frame 2 is provided with a connecting plate 501 , and the lifting adjustment rod 401 and the lifting arm 402 are respectively hinged to the connecting plate 501 .

[0065] The positioning device is a positioning pin 6, and the auxiliary frame is movably arranged on the top of the main frame through the positioning pin.

[0066] The present embodiment discloses a seed drill with an automatic balancing function, comprising: a tractor 1, a main frame 2, a sub-frame 3, a lifting mechanism 4, an automatic balancing device 5 and a positioning pin 6; the main frame 2 is connected to the rear of the tractor 1 through the lifting mechanism 4; an automatic balancing device 5 is further provided between the sub-frame 3 and the lifting mechanism 4, for maintaining the balance of the sub-frame 3; the sub-frame 3 is movably arranged on the top of the main frame 2 by means of the positioning pin 6;

[0067] The automatic balancing device 5 includes a hoisting balancing bridge; the hoisting balancing bridge suspends the auxiliary frame through a hoisting spring; a shock absorbing device is provided at the bottom of the auxiliary frame 3 and the top of the main frame 2 to reduce the shaking of the auxiliary frame 3.

[0068] The positioning device is a positioning pin 6, and the auxiliary frame is movably arranged on the top of the main frame through the positioning pin.

[0069] As rural labor shifts to non-agricultural industries, direct-seeding rice, as a more labor-saving planting method, has, to a certain extent, adapted to the current situation of labor shortage and ensured the grain planting area.

[0070] Direct-seeding rice refers to a rice cultivation method in which rice is directly sown in the field without going through the seedling raising and transplanting processes. The entire process requires many links, among which seedling raising, seedling lifting, seedling transportation, and seedling transplanting are labor-intensive and have high labor costs. The use of mechanical agricultural tools for direct-seeding cultivation can liberate labor, save labor, and meet the needs of large-scale rice production. When existing seeders are sown on uneven terrain, they are prone to shaking and cannot maintain balance, resulting in uneven sowing of rice seeds, missed sowing and re-seeding, which leads to uneven emergence of seedlings.

[0071] Specifically, the main frame 2 is movably connected to the auxiliary frame 3. The main frame 2 and the auxiliary frame 3 have the same size specifications. The main frame 2 is connected to the tractor 1. The auxiliary frame 3 is connected to the locating pins 6 on the outer edge of the auxiliary frame 3 by welding the locating pins 6 on the outer edge of the main frame 2 up and down. Through the combination of multiple groups of locating pins 6 on the front, back, left and right, the main and auxiliary frames can be movably connected together up and down to achieve the corresponding function of automatic balancing.

[0072] As a specific implementation, the lifting mechanism 4 includes a lifting adjustment rod 401 and a lifting arm 402 ; the lifting adjustment rod 401 and the lifting arm 402 are respectively hinged to the main frame 2 .

[0073] Specifically, the main frame 2 is provided with a connecting plate 501 , and the lifting adjustment rod 401 and the lifting arm 402 are hinged to the connecting plate 501 respectively.

[0074] Specifically, the lifting mechanism 4 is “three-point connected” to the main frame 2 via a lifting adjustment rod 401 and two lifting arms 402 .

[0075] As a specific implementation, the hoisting balance bridge includes a support rod 502, a transverse stretch rod 503 and a hoisting spring 504; the support rod 502 is arranged on the top of the lifting mechanism 4, and the transverse stretch rod 503 is arranged on the top of the support rod 502; the transverse stretch rod 503 is connected to the sub-frame 3 through several groups of hoisting springs 504, so as to maintain the balance of the sub-frame 3.

[0076] Specifically, a support rod 502 is connected to the lifting arm 402 of the lifting mechanism 4, and a horizontal shoulder rod 503 of about 2 meters in length is installed on the support rod 502. A plurality of groups of hanging springs 504 are provided on the horizontal shoulder rod 503 for hanging the sub-frame 3. After the horizontal shoulder rod 503 is connected to the sub-frame 3 by the hanging springs 504, it helps the sub-frame 3 to resist lateral force during movement and prevent the sub-frame 3 from shaking or shifting, especially when working on rough ground, which can significantly improve the overall stability; the hanging springs 504 can also effectively disperse the weight of each agricultural equipment on the sub-frame 3 and unload part of the load. The hanging springs 504 can not only withstand static loads, but also buffer dynamic impacts.

[0077] As a specific implementation, a sliding balancing mechanism 13 for reducing the up and down shaking of the auxiliary frame 3 is provided between the lifting mechanism 4 and the connecting plate 501 .

[0078] Specifically, the sliding balancing mechanism 13 includes a fixed frame 1301, a shock-absorbing spring 1302 and a movable frame 1303. The fixed frame 1301 is connected to the sub-frame 3, and the movable frame 1303 is connected to the connecting plate 501. The movable frame 1303 is installed on the fixed frame 1301 through the shock-absorbing spring 1302 and can slide along the height direction of the fixed frame 1301. It can be combined into a supporting combination for the entire sub-frame 3, which can effectively reduce the up and down shaking of the sub-frame 3 and significantly improve the overall stability.

[0079] As a specific implementation, the positioning pin 6 includes a positioning pin seat 601 and a positioning pin head 602; the positioning pin seat 601 is provided with a socket 6011 for inserting the positioning pin head 602, and the end surface of the positioning pin head 602 close to the positioning pin seat 601 is provided with a groove 6021, and a top support spring 603 is installed between the socket 6011 and the groove 6021;

[0080] The outer wall of the positioning pin head 602 is further provided with a pin head limiting groove 6022 , and the positioning pin seat 601 is threadedly connected with a bolt 604 , and the bolt 604 extends into the pin head limiting groove 6022 .

[0081] Specifically, the auxiliary frame 3 is arranged on the main frame 2, and the main frame 2 and the auxiliary frame 3 have the same size specifications. The main frame 2 is connected to the tractor 1 through the lifting mechanism 4, and a positioning pin seat 601 is welded on the outer edge of the main frame 2, and a positioning pin head 602 is welded on the auxiliary frame 3 and the outer edge. Then, the positioning pin seat 601 of the auxiliary frame 3 is connected with the positioning pin head 602 on the outer edge of the main frame 2 up and down, and a plurality of groups of front, back, left and right positioning pins 6 are combined to make the main and auxiliary frames firmly and movably connected up and down, so as to achieve the corresponding function of automatic balancing.

[0082] Specifically, a top support spring 603 is provided in the positioning pin seat 601 and the positioning pin head 602. When the seeder is sowing on uneven terrain, the top support spring 603 can effectively buffer the main frame 2 through compression deformation, and can also reduce the impact force and friction of the positioning pin seat 601 and the positioning pin head 602 during repeated activities, thereby reducing the wear of the components and extending the service life of the positioning pin and its seat.

[0083] Specifically, the top supporting spring 603 is installed on the top of the main frame 2, and is used to support the bottom of the sub-frame 3, so as to transfer the gravity of the sub-frame 3 to the main frame 2, and the main frame 2 transfers the gravity to the tractor. Through the effect of the hanging spring 504 and the top supporting spring 603, 80% to 95% of the total weight of the sub-frame 3 is removed, thereby reducing the weight borne by the ditching mold 7 and improving the sensitivity of automatic parallelism.

[0084] Specifically, the bolt 604 cooperates with the pin head limiting groove 6022 to form an additional locking structure. When the positioning pin seat 601 and the positioning pin head 602 move up and down, the bolt 604 and the pin head limiting groove 6022 are clamped and limited, and the pin head limiting groove 6022 can be pressed in a certain space to further fix the positioning pin head 602 and prevent it from accidentally falling out under extreme activities or external forces, thereby ensuring the safety and reliability of the connection.

[0085] As a specific implementation, a plurality of slide plate grooving molds 7 are symmetrically arranged at the bottom of the auxiliary frame 3, and the slide plate grooving molds 7 are in the shape of an airplane wing;

[0086] The skateboard ditching mold 7 is provided with a stretchable adjustment device, and the skateboard ditching mold 7 is detachably connected to the bottom of the auxiliary frame 3 through the stretchable adjustment device.

[0087] Specifically, a larger skateboard ditching mold 7 is installed on the left and right sides of the bottom of the auxiliary frame 3. The skateboard ditching mold 7 is in the shape of an airplane wing. The skateboard ditching mold 7 extending outward can be flexibly installed and disassembled. The skateboard ditching mold 7 can support the balance of the left and right sides of the bottom of the auxiliary frame 3, thereby ensuring the stable operation of the seeder; a skateboard ditching mold 7 is also installed in the middle of the bottom of the auxiliary frame 3, which can ditch and drain water while realizing automatic parallelism. In the future, a water trough will be added to realize wet irrigation of the paddy field to make the water distribution more even.

[0088] Since the growth of rice seedlings in rice fields can self-regulate, they will reduce tillering when the density is high. Since the rice seedlings planted on the edge of the alley have no other plants in the alley to compete for sunlight, space, and nutrients, their rice seedlings can get a larger growth space, more nutrients, and more sufficient light, so they will tiller more and extend outward, thus achieving the alley effect. When the air, sunlight, space, and fertility in the alley are sufficient, when arranging the seeding boxes, the seeds should be evenly distributed on the left and right sides. After such corresponding treatment, the sowing row spacing on both sides of the groove is increased, and the planting efficiency is improved.

[0089] Example 2

[0090] like Figure 1-8 As shown, this embodiment discloses a seed drill with automatic balancing function, including: a tractor 1, a main frame 2, a sub-frame 3, a lifting mechanism 4, an automatic balancing device 5 and a positioning pin 6; the main frame 2 is connected to the rear of the tractor 1 through the lifting mechanism 4; an automatic balancing device 5 is also provided between the sub-frame 3 and the lifting mechanism 4, for maintaining the balance of the sub-frame 3; the sub-frame 3 is movably arranged on the top of the main frame 2 by means of the positioning pin 6;

[0091] The automatic balancing device 5 includes a hoisting balancing bridge; the hoisting balancing bridge suspends the auxiliary frame through a hoisting spring; a shock absorbing device is provided at the bottom of the auxiliary frame 3 and the top of the main frame 2 to reduce the shaking of the auxiliary frame 3.

[0092] The main frame 2 is provided with a connecting plate 501 , and the lifting adjustment rod 401 and the lifting arm 402 are respectively hinged to the connecting plate 501 .

[0093] As a specific implementation, the auxiliary frame 3 is also provided with a fertilizer spreading device 8, a sowing device 9 and a spraying device 10; the fertilizer spreading device 8 is installed on the top of the auxiliary frame 3 for spraying fertilizer; the sowing device 9 is arranged at the rear side of the fertilizer spreading device 8 for spraying seeds; the spraying device 10 is arranged at the rear side of the sowing device 9 for spraying pesticides;

[0094] The sowing device 9 includes a plurality of funnels 901, an intelligent seeding device 902 and a screening box 903 for evenly screening the seeds; the funnel 901 is arranged on the top of the screening box 903 through a bracket for evenly discharging the seeds; a leakage cover for closing the leakage hole is provided at the bottom of the funnel 901, and the intelligent seeding device 902 is connected to the plurality of funnels 901 for controlling the opening of the leakage cover at the bottom of the funnel 901.

[0095] Specifically, the solid compound fertilizer is evenly sprayed onto the soil through the fertilizer spreading device 8 to improve the fertilizer absorption efficiency; the sowing device 9 is arranged at the rear of the fertilizer spreading device 8 to improve the fertilizer utilization rate; a water tank is arranged in front of the tractor 1, and the water tank is connected to the spraying device 10 at the rear of the tractor 1 through a water pipe. The high-pressure water pump generates pressure for the water pipe to quickly spray the herbicide in the water tank through the spraying device 10 to the target sowing area, thereby improving the efficiency of the weeding operation and achieving uniform spraying of the herbicide.

[0096] Specifically, the sowing device 9 is correspondingly arranged above the plowed furrow, and the sowing motor of the intelligent seeding device 902 is turned on, thereby driving the rotating rod of the intelligent seeding device 902 to rotate, and the rotating rotating rod pushes the leakage cover interval at the bottom of the funnel 901 to open and close the leakage cover interval, so that the funnel 901 can accurately control the amount of rice seeds dropped, making the sowing process more automated and standardized;

[0097] Several layers of screens are arranged at staggered intervals in the screening box 903. The rice seeds screened by the funnel 901 are evenly diverted through the diverter plate and fall into the top of the screening box 903. The rice seeds are evenly screened through the screens arranged at staggered intervals inside the screening box 903, and the screened seeds evenly fall into the grooves, which can effectively improve the utilization efficiency of fertilizers, avoid direct contact between seeds and fertilizers, and thus ensure the healthy development of seeds.

[0098] Example 3

[0099] like Figure 1-9 As shown, this embodiment discloses a seed drill with an automatic balancing function, comprising: a tractor 1, a main frame 2, a sub-frame 3, a lifting mechanism 4, an automatic balancing device 5 and a positioning pin 6; the main frame 2 is connected to the rear of the tractor 1 through the lifting mechanism 4; an automatic balancing device 5 is also provided between the sub-frame 3 and the lifting mechanism 4, for maintaining the balance of the sub-frame 3; the sub-frame 3 is movably arranged on the top of the main frame 2 by the positioning pin 6.

[0100] As a specific embodiment, a plate rake 11 is also provided on the sub-frame 3, and the plate rake 11 includes a movable plate 1101 and a tillage assembly 1102 for turning the soil. The movable plate 1101 can be rotatably set at the rear bottom of the sowing device 9, and the tillage assembly 1102 is spaced at the bottom of the movable plate 1101.

[0101] Specifically, the movable plate 1101 of the plate rake 11 is rotatably arranged at the rear bottom of the sowing device 9, and the soil turning component 1102 is moved to a suitable position and extended into the soil by rotating the movable plate 1101. The plate rake 11 is driven by the tractor 1 to move and cover the soil, and the seeds sown in the groove are covered with soil to ensure that the seeds are buried 3 cm in the soil. The length of the soil turning component 1102 extending into the soil is 2 cm;

[0102] Since the roots of all plants have the characteristic of growing towards fertilizer, after the seedlings emerge, since the fertilizer is below the seeds, the roots of the seedlings will preferentially grow downwards in order to absorb more nutrients, laying the foundation for deep roots and lush leaves and being more resistant to lodging.

[0103] Specifically, according to the topographic conditions in the farmland and the specific farming needs, the fertilizer spreading device 8, the sowing device 9 and / or the spraying device 10 are turned on and the operating speed is adjusted;

[0104] When the tractor 1 turns and slows down, the operation speed of the fertilizer spreading device 8, the sowing device 9 and / or the spraying device 10 can be reduced, so that the amount of fertilizer spread per unit time, the amount of sowing per unit time and / or the amount of spray water per unit time are reduced, so as to achieve the purpose of uniform planting;

[0105] When the tractor 1 is moving straight and accelerating, the operating speed of the fertilizer spreading device 8, the sowing device 9 and / or the spraying device 10 can be increased, so that the amount of fertilizer spread per unit time, the amount of sowing per unit time and / or the amount of spraying water per unit time are increased, so as to achieve the purpose of uniform planting.

[0106] As a specific implementation, a flow guide device 12 is provided at the bottom of the fertilizer spreading device 8 and the sowing device 9;

[0107] Specifically, the flow guide device 12 is in an "inverted eight" shape, and the flow guide device 12 can collect the scattered seeds dropped by the sowing device 9, realize directional flow, and guide the seeds into the opened grooves for sowing. Since the grooves are strip-shaped, the function of row sowing can be realized; because the depth of the grooves is adjustable, the depth of row sowing into the soil is more accurate than that of scattered sowing, so that the rice seedlings have better resistance to lodging;

[0108] The flow guide device 12 can also concentrate the dispersed compound fertilizer dropped by the fertilizer spreading device 8, realize directional flow, and guide the compound fertilizer into the opened groove for fertilizer spreading. Since the groove is strip-shaped, the function of strip spreading can be realized;

[0109] Specifically, the diversion device 12 can be taken out from the bottom of the fertilizer spreading device 8 and the sowing device 9 to achieve the spreading.

[0110] Example 4

[0111] like Figure 1-10 As shown, this embodiment discloses a seed drill with an automatic balancing function, comprising: a tractor 1, a main frame 2, a sub-frame 3, a lifting mechanism 4, an automatic balancing device 5 and a positioning pin 6; the main frame 2 is connected to the rear of the tractor 1 through the lifting mechanism 4; an automatic balancing device 5 is also provided between the sub-frame 3 and the lifting mechanism 4, for maintaining the balance of the sub-frame 3; the sub-frame 3 is movably arranged on the top of the main frame 2 by the positioning pin 6.

[0112] As a specific implementation, a skateboard groove mold 7 is symmetrically provided on both sides of the auxiliary frame 3, and the skateboard groove mold 7 is in the shape of an airplane wing;

[0113] The skateboard ditching mold 7 is provided with a stretchable adjustment device, and the skateboard ditching mold 7 is detachably connected to the bottom of the auxiliary frame 3 through the stretchable adjustment device.

[0114] A larger skateboard ditching mold 7 is installed on both sides of the auxiliary frame 3. The skateboard ditching mold 7 is in the shape of an airplane wing. The skateboard ditching mold 7 extending outward can be flexibly installed and disassembled. The skateboard ditching mold 7 can support the balance of the left and right sides of the bottom of the auxiliary frame 3, thereby ensuring the stable operation of the seed drill; a skateboard ditching mold 7 is also installed in the middle of the bottom of the auxiliary frame 3, which can ditch and drain water while realizing automatic parallelism. In the future, a water trough will be added to realize moist irrigation of the paddy field to make the water distribution more even.

[0115] How it works

[0116] A support rod 502 is connected to the lifting arm 402 of the lifting mechanism 4, and a transverse shoulder rod 503 of about 2 meters in length is installed on the support rod 502. A plurality of groups of hanging springs 504 are arranged on the transverse shoulder rod 503 for hanging the sub-frame 3. After the transverse shoulder rod 503 is connected to the sub-frame 3 by the hanging springs 504, it helps the sub-frame 3 to resist lateral force during movement and prevent the sub-frame 3 from shaking or deflecting, especially when working on rough ground, which can significantly improve the overall stability; the hanging springs 504 can also effectively disperse the weight of each agricultural equipment on the sub-frame 3, and can unload part of the load. The hanging springs 504 can not only withstand static loads, but also buffer dynamic impacts;

[0117] The main frame 2 is movably connected to the auxiliary frame 3. The main frame 2 and the auxiliary frame 3 have the same size specifications. The main frame 2 is connected to the tractor 1 through the lifting mechanism 4. A positioning pin seat 601 is welded on the outer edge of the main frame 2, and a positioning pin head 602 is welded on the auxiliary frame 3 and the outer edge. Then, the positioning pin seat 601 of the auxiliary frame 3 is connected to the positioning pin head 602 on the outer edge of the main frame 2 up and down. Through a combination of multiple groups of front, back, left and right positioning pins 6, the main and auxiliary frames can be movably connected together up and down to achieve the corresponding function of automatic balancing.

[0118] The automatic balancing device 5 and the positioning pin 6 can be combined into a supporting assembly for the entire auxiliary frame 3, which can offset 80% to 95% of the weight on the auxiliary frame 3, reduce the load-bearing capacity of the slide plate trenching mold 7, and thus improve the automatic balancing ability of the seed drill.

[0119] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An automatic balancing structure, characterized in that: include: A main frame (2), a sub-frame (3), a lifting mechanism (4), an automatic balancing device (5) and a positioning pin (6); the main frame (2) is connected to the rear of the tractor (1) through the lifting mechanism (4); an automatic balancing device (5) is also provided between the sub-frame (3) and the lifting mechanism (4) for maintaining the balance of the sub-frame (3); the bottom of the sub-frame (3) is movably arranged on the top of the main frame (2) through the positioning device; The automatic balancing device (5) comprises a hoisting balancing bridge, wherein the hoisting balancing bridge suspends the auxiliary frame (3) via a hoisting spring (504); a shock absorbing device is provided at the bottom of the auxiliary frame (3) and the top of the main frame (2).

2. The automatic balancing structure according to claim 1, characterized in that: The lifting mechanism (4) comprises a lifting adjustment rod (401) and a lifting arm (402); the lifting adjustment rod (401) and the lifting arm (402) are respectively hinged to the main frame (2); The main frame (2) is provided with a connecting plate (501), and the lifting adjustment rod (401) and the lifting arm (402) are respectively hinged to the connecting plate (501).

3. The automatic balancing structure according to claim 1, characterized in that: The hoisting balance bridge comprises a support rod (502), a transverse stretch rod (503) and a hoisting spring (504); the support rod (502) is arranged on the top of the lifting mechanism (4), and the transverse stretch rod (503) is arranged on the top of the support rod (502); the transverse stretch rod (503) is connected to the auxiliary frame (3) through a plurality of groups of hoisting springs (504) to maintain the balance of the auxiliary frame (3).

4. The automatic balancing structure according to claim 1, characterized in that: The positioning device is a positioning pin, and the positioning pin (6) comprises a positioning pin seat (601) and a positioning pin head (602); the positioning pin seat (601) is provided with a socket (6011) for the positioning pin head (602) to be inserted, and the end surface of the positioning pin head (602) close to the positioning pin seat (601) is provided with a groove (6021), and a supporting spring (603) is installed between the socket (6011) and the groove (6021).

5. The automatic balancing structure according to claim 4, characterized in that: The outer wall of the positioning pin head (602) is also provided with a pin head limiting groove (6022), and a bolt (604) is threadedly connected to the positioning pin seat (601), and the bolt (604) extends into the pin head limiting groove (6022).

6. A seed drill provided with the automatic balancing structure according to any one of claims 1 to 5, characterized in that: A plurality of slide plate groove opening moulds (7) are symmetrically arranged at the bottom of the auxiliary frame (3), and the slide plate groove opening moulds (7) are in the shape of an airplane wing.

7. The seed drill according to claim 6, characterized in that: The slide plate ditching mold (7) is provided with a stretchable adjustment device, and the slide plate ditching mold (7) is detachably connected to the bottom of the auxiliary frame (3) via the stretchable adjustment device.

8. The seed drill according to claim 6, characterized in that: The auxiliary frame (3) is also provided with a fertilizer spreading device (8), a sowing device (9) and a spraying device (10); the fertilizer spreading device (8) is mounted on the auxiliary frame (3) and is used for spraying fertilizer; the sowing device (9) is arranged at the rear side of the fertilizer spreading device (8) and is used for spraying seeds; the spraying device (10) is arranged at the rear side of the sowing device (9) and is used for spraying pesticides.

9. The seed drill according to claim 8, characterized in that: The sowing device (9) comprises a plurality of funnels (901), an intelligent seeding device (902) and a screening box (903) for uniformly screening the agricultural seeds; the funnel (901) is arranged on the top of the screening box (903) through a bracket, and is used to uniformly discharge the agricultural seeds; a leakage cover for closing the leakage hole is provided at the bottom of the funnel (901); the intelligent seeding device (902) is connected to the plurality of funnels (901) and is used to control the opening of the leakage cover at the bottom of the funnel (901).

10. The seed drill according to claim 8, characterized in that: The auxiliary frame (3) is also provided with a plate rake (11), and the plate rake (11) comprises a movable plate (1101) and a tillage assembly (1102) for turning over the soil, the movable plate (1101) being rotatably arranged at the rear bottom of the sowing device (9), and the tillage assembly (1102) being arranged at intervals at the bottom of the movable plate (1101).

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