A towed folding seeder

Abstract

The application discloses a towing type folding seeding machine, which comprises a towing frame, a folding frame, a walking support assembly, a seed box assembly and a furrowing, seeding and pressing unit. The head of the towing frame is connected with a tractor. The folding frame comprises a middle frame, a left frame and a right frame. The left frame and the right frame can be folded, so that the working efficiency is improved during work, the width of the frame is effectively reduced after work, and transportation and storage are facilitated. The first hydraulic pump assembly and the second hydraulic pump assembly comprise a base. A buffer cavity is formed on one side of the base. When the frame moves upward, the frame is slowly lifted, the frame can be adjusted according to the terrain, and the left frame is not separated from the land due to too fast adjustment, so that the success rate of seeding is influenced. When the frame moves downward, the frame can be rapidly lowered to a suitable position.

Description

Technical Field

[0001] This invention relates to the field of agricultural implements technology, and in particular to a towed folding seeder. Background Technology

[0002] Agricultural machinery plays a vital role in modern agriculture, not only improving production efficiency but also reducing labor intensity. However, existing agricultural machinery still faces some problems and challenges in its use.

[0003] Currently, domestic small-seed (such as wheat, barley, and rapeseed) seeders have a fixed working width, resulting in low efficiency. To increase efficiency, wide-width seeders have emerged. However, these current wide-width seeders lack adjustment mechanisms, making them highly dependent on soil conditions. When the soil is uneven, insufficient sowing depth and poor soil covering can easily occur, leading to seed waste and low germination rates. Furthermore, the wider width of these seeders presents numerous challenges in transportation, storage, and maintenance. Summary of the Invention

[0004] This invention provides a towable folding seeder with a foldable and detachable structure and a buffer section. This makes the seeder easy to transport, store and maintain, and allows it to automatically adjust under gravity.

[0005] A towed folding seeder includes a tow frame, a folding frame, a walking support assembly, a seed box assembly, and a furrowing, sowing, and compaction unit. The tow frame head is connected to a tractor. The folding frame includes a middle frame, a left frame, and a right frame. The middle frame crossbeam connects to the tow frame. The left and right frames are hinged to the middle frame. The tow frame is equipped with a first hydraulic pump assembly and a second hydraulic pump assembly. One end of the first hydraulic pump assembly is connected to the left frame, and one end of the second hydraulic pump assembly is connected to the right frame. The extension and retraction of the first and second hydraulic pump assemblies cause the left and right frames to rotate relative to the middle frame. The first hydraulic pump assembly and the second hydraulic pump assembly include a base, a buffer chamber formed on one side of the base, a buffer solution sealed inside the buffer chamber, a rotating shaft at one end of the buffer chamber, and a movable shaft at the other end. The traction frame has a fixed end that matches the rotating shaft and the movable shaft. The first hydraulic pump assembly and the second hydraulic pump assembly are mounted on the traction frame via the rotating shaft and the movable shaft. The movable shaft extends into the buffer solution and has a groove on its side. A resistance fin is mounted in the groove via a spring. One side of the resistance fin is flat and the other side is inclined. The resistance of the resistance fin to the upward movement of the first hydraulic pump assembly and the second hydraulic pump assembly is greater than the resistance to the downward movement of the first hydraulic pump assembly and the second hydraulic pump assembly.

[0006] Furthermore, the left and right frames are provided with slide grooves, and sliders are provided in the slide grooves. The sliders are connected to the middle frame by hinges.

[0007] Furthermore, the fixed end is triangular, quadrilateral, or polygonal.

[0008] Furthermore, the buffer cavity is cylindrical, and the end of the resistance fin is arc-shaped.

[0009] Furthermore, the total width of the middle rack, the left rack, and the right rack is greater than or equal to 12m.

[0010] Furthermore, a locking hook cylinder is provided on the traction frame, and locking heads that match the locking hook cylinder are provided on the left and right frames.

[0011] Furthermore, the walking support assembly includes multiple sets of hydraulic support wheel assemblies, each set of hydraulic support wheels consists of two rubber wheels, and the supporting square steel between the two rubber wheels is rotatably connected to the welded lug of the frame beam, and the supporting square steel is connected to the welded lug on the same horizontal plane by a hydraulic cylinder.

[0012] Furthermore, the seed box assembly consists of a middle seed box, a left seed box, and a right seed box, which are fixed to the frame one by one. The seed box includes a partitioned box body with partitions evenly spaced inside the box body.

[0013] Furthermore, the furrowing, sowing, and pressing unit includes a multi-functional seed metering device, an arc-shaped integrated double-disc furrowing, sowing, and pressing mechanism, and multiple seed tubes and hoses. The multi-functional seed metering device is arranged and fixed at equal intervals at the bottom of the seed box, and the arc-shaped integrated double-disc furrowing, sowing, and pressing mechanism is installed in a staggered manner.

[0014] Furthermore, the multi-functional seed metering device includes a seed box, a groove wheel assembly, a seed tongue, a seed tongue adjustment seat, a seed box cover, and an insert plate. The seed metering device is easy to replace and is driven by a speed-regulating motor with a continuously variable transmission device that allows for stepless adjustment of the seed metering volume.

[0015] The technical solution of this invention has the following technical effects:

[0016] When the seeder is working, the first and second hydraulic pumps extend, causing the left and right frames to unfold. This, in turn, unfolds the seed box assemblies and furrowing, sowing, and compaction units on the left and right frames, aligning the left, middle, and right frames roughly in a straight line. This allows for furrowing, sowing, and compaction operations with a wider span. After sowing is complete, the first and second hydraulic pumps retract, folding the left and right frames, effectively reducing the frame width for easier transport and storage.

[0017] During sowing, when the soil on one side of the left frame is higher, the resistance on the left increases, pushing the left frame upward. This, in turn, causes the connected first hydraulic pump to move upward. At this time, the liquid in the pump base flows through the gap between the resistance fins and the buffer chamber. Because the gap is small, the first hydraulic pump and the left frame rise slowly, allowing the left frame to adjust according to the terrain without detaching from the soil due to rapid adjustment, thus improving sowing success. When the resistance on the left frame decreases, it descends under gravity. The first hydraulic pump moves downward with the left frame. As the liquid in the pump base flows through the resistance fins, they contract, increasing the gap between the resistance fins and the sidewall of the buffer chamber. This allows the liquid to flow quickly through the gap, enabling the first hydraulic pump and the left frame to descend relatively quickly to the appropriate position. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1.

[0019] Figure 2 This is a schematic diagram of the folding structure in Example 1.

[0020] Figure 3 This is a schematic diagram of the connection between the middle frame and the left frame in Embodiment 1.

[0021] Figure 4 This is a partial structural diagram of the traction frame and hydraulic pump base in Example 1.

[0022] Figure 5 This is a schematic diagram of the hydraulic pump base in Example 1.

[0023] Figure 6 This is a cross-sectional structural diagram of the hydraulic pump base in Example 1.

[0024] Figure 7 This is a schematic diagram of the structure of a box as an example.

[0025] Figure 8 This is a schematic diagram of the structure of the furrowing, sowing, and compaction unit in Example 1.

[0026] Figure 9 This is a schematic diagram of the bow-shaped integrated double-disc trenching and pressing mechanism in Embodiment 1.

[0027] 1. Traction-type folding frame; 2. Walking support assembly; 3. Seed box assembly; 4. Furrowing, sowing, and pressing unit; 5. Hydraulic control unit; 101. Left side frame; 102. Middle frame; 103. Right side frame; 104. Movable rod; 105. Folding cylinder; 106. Locking hook cylinder; 201. Supporting square steel; 202. Welded ear bracket; 203. Rubber wheel; 204. Hydraulic adjusting cylinder; 301. Left side seed box; 302. Middle seed box; 303. Right side seed box; 41. Multifunctional seed metering device; 42. Adjusting square steel; 43. Bow-shaped integrated double-disc furrowing, sowing, and pressing mechanism; 44. Pressing adjustment device; 432. 433. Pressing and disengaging connecting arm; 434. Disengaging and disengaging mudguard; 435. Disengaging and disengaging disc; 436. Disengaging and disengaging disc scraper; 437. Pressing wheel cleaning plate; 411. Seeding box; 412. Grooved wheel assembly; 413. Insert plate; 414. Seeding box cover; 415. Seeding tongue; 416. Seeding tongue adjusting seat; 107. Base; 11. Locking head; 108. Slide groove; 109. Sliding block; 1071. Buffer chamber; 1072. Rotating shaft; 1073. Movable shaft; 1074. Groove; 1075. Resistance fin; 1076. Spring; 1077. Gap. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The automatic hot metal handling system for sandwich spheroidizing process involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0029] A towed three-fold precision seeder, connected to a tractor, includes a towed folding frame 1, a walking support assembly 2, a seed box assembly 3, a furrowing, sowing, and pressing unit 4, a hydraulic control unit 5, and a Doppler radar speed feedback control unit. The tow head of the towed frame 1 is connected to the rear suspension of the tractor to drive the implements to work.

[0030] The towable folding frame consists of three sections: a middle frame 102, a left frame 103, and a right frame 104. The entire machine has a working width of 12m. The crossbeam of the middle frame 102 connects to the tow frame. When the tractor moves, the tow frame 104 drives the middle frame 102 to move, thereby achieving sowing. The left frame 101 and right frame 103 are rotatably connected to the middle frame 103 via hinges 5. When the left frame 101 or right frame 102 receives a horizontal force, the left frame 101 and right frame 103 can rotate relative to the middle frame 102.

[0031] The towing frame is equipped with a first hydraulic pump assembly and a second hydraulic pump assembly. One end of the first hydraulic pump assembly is connected to the left side frame 101, and one end of the second hydraulic pump assembly is connected to the right side frame 103. The first hydraulic pump assembly includes a folding cylinder 105 and a base 107. The folding cylinder 105 is mounted on the base 107 and is connected to the left side frame via a movable rod 104. When the folding cylinder 105 controls the movable rod 104 to extend, it pushes the left side frame 101 to unfold. When the folding cylinder 105 controls the movable rod 104 to retract, the left side frame 101 folds. The right side frame 103 has the same structure as the left side frame 101. After the work is completed, the left side frame 101 and the right side frame 103 can be folded, which can effectively save space and facilitate transportation. The traction frame 1 is equipped with a locking hook cylinder 106. When the left support 101 and the right support 103 are fully folded, the locking heads 11 of the left support 101 and the right support 103 extend into the traction frame hole. The locking hook cylinder 106 can effectively fix the left support 101 and the right support to the traction frame 1 to prevent safety hazards.

[0032] A sliding groove 108 is provided on the side of the left support 101 near the middle support 102. A slider 109 is provided in the sliding groove 108 and is connected to a hinge. The left support 101 can move up and down relative to the middle support 102 through the sliding groove 108. A buffer cavity 1071 is formed on one side of the base 107. The buffer cavity 1071 is sealed with a buffer solution. The buffer solution cavity is cylindrical. A rotating shaft 1072 is provided at one end of the buffer solution. The rotating shaft 1072 is cylindrical. A movable shaft 1073 is provided at the other end. The movable shaft 1073 is triangular. It can be understood that the shape of the movable shaft can also be set to quadrilateral or polygonal. The traction frame 1 is provided with a fixed end that matches the movable shaft 1073 and the rotating shaft 1072, thereby connecting the base 107 to the traction frame. The rotating shaft 1072 can rotate in the shaft hole of the fixed end, and the movable shaft 1073 can rotate relative to the buffer cavity 107.

[0033] One end of the movable shaft 1073 is located inside the fixed end, and the other end extends into the buffer solution of the buffer chamber 1071. A groove 1074 is located on the side of the shaft, and a resistance fin 1075 is mounted in the groove via a spring 1076. The end of the resistance fin is arc-shaped and matches the buffer chamber 1071. A gap 1077 is provided between the resistance fin and the buffer chamber. One side of the resistance fin is flat, and the other side is inclined. When the movable shaft 1073 rotates relative to the buffer chamber 1071, the liquid can flow through the gap between the resistance fin and the buffer chamber. When the base 107 rotates upward, the liquid flows along direction A from the flat side of the resistance fin to the inclined side. The gap between the resistance fin and the buffer chamber is small, resulting in greater resistance and preventing rapid rotation. When the base 107 rotates downward, the liquid flows along the opposite direction A from the inclined side of the resistance fin to the flat side. The liquid flow applies pressure to the resistance fin through the inclined surface, compressing it into the groove 1074 and increasing the gap between the resistance fin and the buffer chamber, allowing for faster rotation.

[0034] During sowing, when the soil on one side of the left frame is higher, it will push the left frame upwards. The left frame will then drive the first hydraulic pump connected to it upwards. At this time, the liquid in the hydraulic pump base flows through the gap between the resistance fins and the buffer chamber. Because the gap between the resistance fins and the buffer chamber is small, the first hydraulic pump and the left frame rise slowly, allowing the left frame to adjust according to the terrain without causing it to detach from the soil due to excessively rapid adjustment, thus affecting the sowing success rate. When the soil on one side of the left frame is lower, the left frame descends under gravity. At this time, the first hydraulic pump moves downwards with the left frame. The liquid in the hydraulic pump base flows through the resistance fins, causing them to contract, thus increasing the gap between the resistance fins and the sidewall of the buffer chamber. This allows the liquid to flow quickly through the gap, enabling the first hydraulic pump and the left frame to descend relatively quickly to the appropriate position.

[0035] The walking support assembly 2 includes four sets of hydraulic support wheel assemblies. Each set of hydraulic support wheels consists of two rubber wheels 203. The middle support square steel 201 between the two rubber wheels is rotatably connected to the welded lug 202 of the frame beam. The support square steel is connected to the welded lug on the same horizontal plane, and the hydraulic cylinder drives the support square steel 201 to effectively adjust the height of the support wheel.

[0036] The seed box assembly consists of a middle seed box 302, a left seed box 301, and a right seed box 303, which are fixed to the frame one by one and folded along with the frame. The seed box adopts a partitioned box body with partitions set at equal intervals inside the box, which helps to maintain the uniformity of seeds in the box.

[0037] The furrowing, sowing, and pressing unit includes a multi-functional seed metering device 41, an arc-shaped integrated double-disc furrowing, sowing, and pressing mechanism 43, and multiple seed tubes and hoses. The multi-functional seed metering device 41 is evenly spaced and fixed to the bottom of the seed box, including a sowing box 411, a grooved wheel assembly 412, a sowing tongue 415, a sowing tongue adjusting seat 416, a seed box cover 414, and an insert plate 413. Seeds in the seed box enter the sowing box 411 and then the grooves of the grooved wheel assembly 412. The rotation of the grooved wheel assembly 412 rotates the seeds downwards, forming a queue. After falling, the seeds enter the seed tubes through the sowing tongue 415 and are then sown. The rotation of the sowing tongue adjusting seat 416 opens and closes the sowing tongue. The seed metering device is driven by a speed-regulating motor, and the seed dispensing rate is continuously adjusted by a stepless speed change device.

[0038] The bow-shaped integrated double-disc furrowing and sowing pressing mechanism 43 includes a pressing and disengaging connecting arm 432, a disengaging mudguard 433, a disengaging disc 434, a disengaging disc scraper 435, a pressing wheel 436, and a pressing wheel cleaning plate 437. The pressing and disengaging connecting arm 432 is fixed on the left side frame, the right side frame, and the middle frame. During operation, the bow-shaped integrated double-disc furrowing and sowing pressing mechanism moves with the frame. When the disengaging disc 434 rotates, it cuts a sowing furrow in the soil. Seeds fall into the sowing furrow through a flexible tube. The pressing wheel flattens the sown land, thus achieving automatic sowing. A disengaging mudguard 433 is provided on one side of the disengaging disc 434 to prevent soil from splashing. A disengaging disc scraper 435 is provided on the disengaging disc, and a pressing wheel cleaning plate 437 is provided on the pressing wheel 436 to prevent soil from suddenly adhering to the disengaging disc 434 and the pressing wheel 436 and affecting the operation of the seeder.

[0039] The bow-shaped integrated double-disc trenching and planting pressing mechanism 43 is installed in a staggered manner, increasing the gap between them and effectively solving the problem of grass blockage in the machine. The new pressing and disengaging connecting arm is made of aluminum alloy, which is lightweight, bow-shaped, and has high yield strength and fatigue strength. Through the bow shape and the yield strength of the material, the bow-shaped integrated double-disc trenching and planting pressing mechanism has a certain deformation force, and the pressing wheel can be adjusted by the pressing adjustment device.

[0040] Multiple bow-shaped integrated double-disc furrowing, sowing, and pressing mechanisms are fixed on a crossbeam and are divided into three sections. Telescopic square steel 42 is welded and fixed at both ends of the crossbeam. Rotating the discs on the telescopic square steel 42 can adjust the height of the furrowing, sowing, and pressing unit. Removing the telescopic square steel allows each section to be disassembled as a whole, facilitating the replacement of other units and subsequent maintenance.

[0041] The Doppler radar speed feedback control unit, combined with the seed metering device's electric drive continuously variable transmission, precisely controls the seeding rate. It mainly consists of a main controller, Doppler radar, display screen, speed-regulating motor, motor driver, and multiple circuits. The Doppler radar collects the machine's operating speed and transmits the speed signal to the central control system. After algorithm analysis, the motor driver is adjusted in real time to control the seeding rate and achieve precise seeding. The display screen shows the seeding parameters in real time.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0044] In conclusion, 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A trailed folding seed drill characterised in that, The utility model relates to a seedling raising machine, which comprises a traction frame, a folding frame, a walking support assembly, a seed box assembly, a furrowing, seeding and pressing unit, the head of the traction frame is connected with a tractor, the folding frame comprises a middle frame, a left side frame and a right side frame, the middle frame transverse beam connects the traction frame, the left side frame and the right side frame are connected with the middle frame through hinges, a first hydraulic pump assembly and a second hydraulic pump assembly are arranged on the traction frame, one end of the first hydraulic pump assembly is connected with the left side frame, one end of the second hydraulic pump assembly is connected with the right side frame, the first hydraulic pump assembly and the second hydraulic pump assembly are telescopic and drive the left side frame and the right side frame to rotate relative to the middle frame, the first hydraulic pump assembly and the second hydraulic pump assembly comprise a base, one side of the base forms a buffer cavity, buffer liquid is sealed in the buffer cavity, one end of the buffer cavity is provided with a rotating shaft, and the other end is provided with a movable shaft, the traction frame is provided with fixed ends matched with the rotating shaft and the movable shaft, the first hydraulic pump assembly and the second hydraulic pump assembly are arranged on the traction frame through the rotating shaft and the movable shaft, the movable shaft extends into the buffer liquid, the movable shaft side has a groove, a resistance fin is arranged in the groove through a spring, one side of the resistance fin is a plane, and the other side is an inclined plane, the resistance of the resistance fin to the upward movement of the first hydraulic pump assembly and the second hydraulic pump assembly is greater than the resistance to the downward movement of the first hydraulic pump assembly and the second hydraulic pump assembly, the left side frame and the right side frame are provided with sliding grooves, sliding blocks are arranged in the sliding grooves, and the sliding blocks are connected with the middle frame through hinges.

2. The trailed folding seed drill of claim 1, wherein, The fixed end is triangular, quadrangular or polygonal.

3. The trailed folding seed drill of claim 1, wherein, The buffer cavity is cylindrical, and the end of the resistance fin is arc-shaped.

4. The trailed folding seed drill of claim 1, wherein, The total width of the middle frame, the left side frame and the right side frame is greater than or equal to 12 m.

5. The trailed folding seed drill of claim 1, wherein, Locking hook oil cylinders are arranged on the traction frame, and the left side frame and the right side frame are provided with locking heads matched with the locking hook oil cylinders.

6. The trailed folding seed drill of claim 1, wherein, The walking support assembly comprises a plurality of hydraulic support wheel assemblies, each hydraulic support wheel assembly comprises two rubber wheels, a middle support square steel is rotatably connected to a welded lug of the frame transverse beam, and a hydraulic oil cylinder is connected between the support square steel and the welded lug in the horizontal plane.

7. The trailed folding seed drill of claim 1, wherein, The seed box assembly comprises a middle seed box, a left side seed box and a right side seed box, which are fixed one by one with the frame, the seed box comprises a partitioned box body, and the box body is provided with equidistant partitions.

8. The trailed folding seed drill of claim 1, wherein, The furrowing, seeding and pressing unit comprises a multifunctional seed sowing device, a bow-shaped integrated double-disc furrowing, seeding and pressing mechanism and a plurality of seed tubes and hoses, the multifunctional seed sowing device is installed and fixed at the bottom of the seed box assembly at equal intervals, and the bow-shaped integrated double-disc furrowing, seeding and pressing mechanism is installed in a staggered manner.

9. The trailed folding seed drill of claim 8, wherein, The multifunctional seed sowing device comprises a seeding box, a groove wheel set, a seeding tongue, a seeding tongue adjusting seat, a seed box cover and a plug, the seed sowing device is convenient to replace, is driven by a speed regulating motor, and a stepless speed change device drives stepless adjustment of the seeding amount.

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