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CN-121605824-B - But accurate speed governing's hydraulic drive fan for no-tillage seeder of air-blowing formula

CN121605824BCN 121605824 BCN121605824 BCN 121605824BCN-121605824-B

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a hydraulic drive fan for an air-blowing no-tillage planter capable of accurately regulating speed, which comprises a fan shell, a hydraulic motor is fixedly arranged on the outer wall of the fan shell, the hydraulic motor oil inlet port is fixedly connected with a plurality of oil inlet pipes, the circumferential side wall of the fan shell is fixedly connected with an exhaust pipe, and the top end of the exhaust pipe is fixedly connected with a self-adaptive speed regulating assembly. According to the invention, a traditional mechanical transmission driving fan is replaced by a hydraulic motor to drive the impeller to rotate, so that the operation safety and reliability of air-blowing type seeding fan equipment are effectively improved, the grain size of seeds can be accurately detected, the air-blowing speed of the seeds can be adaptively and steplessly regulated according to the grain size of the seeds, the air-blowing type seeding quality is effectively improved, meanwhile, the feeding vibration frequency can be adaptively regulated according to seeds with different grain sizes, the seed seeding density is uniform, and the uniformity and the continuity of seed seeding are improved.

Inventors

  • WU JIANG
  • WANG YINGFENG
  • SONG LAIHUI
  • LIU XIAOYANG
  • LI YANG
  • WANG QIANG
  • MA JIE

Assignees

  • 中科滕森(山东)智能装备有限公司

Dates

Publication Date
20260508
Application Date
20260202

Claims (8)

  1. 1. But accurate speed governing's hydraulic drive fan for no-tillage seeder of air-blowing formula, its characterized in that includes: The novel air conditioner comprises a fan shell (1), wherein a hydraulic motor (2) is fixedly arranged on the outer wall of the fan shell (1), a plurality of oil inlet pipes (3) are fixedly communicated with oil inlet ports of the hydraulic motor (2), exhaust pipes (4) are fixedly communicated with the circumferential side wall of the fan shell (1), and self-adaptive speed regulating assemblies (5) are fixedly communicated with the top ends of the exhaust pipes (4); The self-adaptive speed regulation assembly (5) comprises a blanking pipe (51) fixedly connected to the top end of an exhaust pipe (4), a guide ring (52) is fixedly connected to the inner wall of the blanking pipe (51), two arc sliding holes (53) are formed in the side wall of the blanking pipe (51), two inner rotating rods (54) are in rolling fit with the arc sliding holes (53), two electric pushing rods (56) are fixedly mounted on the peripheral wall of the blanking pipe (51) through an annular frame (55), supporting shaft seats (57) are fixedly connected to the telescopic ends of the two electric pushing rods (56), the two supporting shaft seats (57) are in transmission connection with the ends of the two inner rotating rods (54) through transmission rods (58), seed detection conveying components (6) are rotationally connected to the side wall of the blanking pipe (51), an accurate speed regulation component (7) is fixedly connected to the top end of the oil inlet pipe (3), and a speed regulation transmission component (8) is fixedly connected to the peripheral wall of the telescopic end of one electric pushing rod (56). The seed detection conveying component (6) comprises two outer rotating rods (61) which are rotatably connected to the side wall of a blanking pipe (51), two small motors (62) are fixedly installed on the peripheral wall of the blanking pipe (51), the output ends of the two small motors (62) are fixedly connected with the end parts of the two outer rotating rods (61) respectively, outer synchronous gears (63) are fixedly connected to the peripheral walls of the two outer rotating rods (61), inner synchronous gears (64) are fixedly connected to the peripheral walls of the two inner rotating rods (54), the two inner synchronous gears (64) are in meshed transmission fit with the two outer synchronous gears (63) through elastic synchronous tracks (65) respectively, the elastic synchronous tracks (65) are in fit with the lower end surfaces of a guide ring (52), miniature vision sensors (66) are fixedly installed on the lower positions of the inner walls of the blanking pipe (51), whether seeds fall down or not is monitored in real time by the miniature vision sensors (66), and an outer wall shell (1) and an electric controller (67) are fixedly installed on the outer shell (67) and the miniature vision sensors (56) are electrically connected with the PLC; The position of the peripheral wall of the blanking pipe (51) close to the upper position is fixedly communicated with a multidirectional vibration blanking assembly (9).
  2. 2. The hydraulic drive fan for the air-blowing no-tillage planter capable of accurately regulating speed according to claim 1 is characterized in that the accurate speed regulating component (7) comprises a lower through pipe (71) fixedly connected to the top end of an oil inlet pipe (3), a connecting frame (72) is fixedly connected to the peripheral wall of the lower through pipe (71), an upper through pipe (73) is fixedly connected to the top end of the connecting frame (72), sealing bearings (74) are fixedly connected to the peripheral walls of the upper through pipe (73) and the lower through pipe (71), a speed regulating through pipe (75) is fixedly connected to the outer ring of each sealing bearing (74), a rotary valve plate (76) is fixedly connected to the inner wall of each speed regulating through pipe (75), and a plurality of through holes (78) are formed in each of the fixed valve plate (77) and the rotary valve plate (76).
  3. 3. The hydraulic driving fan for the air-blown no-tillage planter capable of accurately adjusting speed according to claim 2 is characterized by further comprising a hydraulic pump (10), an oil tank (11), an oil outlet pipe (12), an air inlet pipe (13) and an impeller (14), wherein two ends of the oil outlet pipe (12) are fixedly communicated with an oil return port of a hydraulic motor (2) and the oil tank (11) respectively, the hydraulic pump (10) is communicated with an upper through pipe (73), the hydraulic pump (10) is communicated with the oil tank (11) through a high-pressure hose (15), the air inlet pipe (13) is fixedly communicated with the axial side wall of a fan shell (1), the impeller (14) is rotatably arranged on the axial inner wall of the fan shell (1), and a wheel shaft of the impeller (14) is coaxially connected with the output end of the hydraulic motor (2) through a coupler.
  4. 4. The hydraulic drive fan for an air-blown no-tillage planter capable of accurately regulating speed according to claim 2, wherein the speed regulating transmission part (8) comprises a lifting frame (81) fixedly connected to the outer peripheral wall of the telescopic end of one electric push rod (56), an inclined chute (82) is formed in the top end of the lifting frame (81), a support frame (83) is fixedly connected to the outer wall of the connecting frame (72), a plurality of rectangular limiting rings (84) are fixedly connected to the outer wall of the support frame (83), a plurality of retaining plates (85) are slidingly connected to the inner sides of the rectangular limiting rings (84), the end part, close to the lifting frame (81), of the retaining plates (85) is in an inclined structure and is in contact sliding fit with the top end of the lifting frame (81) through the inclined chute (82), a fine toothed plate (86) is fixedly connected to the outer peripheral wall of the speed regulating through pipe (75), and the fine toothed ring (87) is meshed and in transmission fit with the fine toothed plate (86).
  5. 5. The hydraulic driving fan for the air-blowing no-tillage planter capable of accurately adjusting speed according to claim 4, wherein the support frame (83) is provided with a strip-shaped sliding hole (16), the outer wall of the retaining plate (85) is fixedly connected with a T-shaped rod (17), the T-shaped rod (17) is in sliding fit with the support frame (83) through the strip-shaped sliding hole (16), and a compression spring (18) is fixedly connected between the T-shaped rod (17) and the support frame (83).
  6. 6. The hydraulic drive fan for an air-blown no-tillage planter capable of accurately adjusting speed according to claim 1, characterized in that, multidirectional vibration blanking assembly (9) comprises a connecting frame (91) fixedly connected with a blanking pipe (51) peripheral wall, a feeding pipe (92) is fixedly connected with the top end of the connecting frame (91), a limiting ring (93) is fixedly connected with the position of the feeding pipe (92) and the position of the inner wall of the blanking pipe (51) close to the connecting frame (91), two switching pipes (94) are rotatably connected between the limiting rings (93), limiting plates (95) are fixedly connected with the inner wall of the switching pipes (94), eccentric holes (96) are formed in the limiting plates (95), a feeding hopper (97) is slidably connected with the position of the eccentric holes (96), a plurality of combing columns (98) are fixedly connected with the outer peripheral wall of the feeding hopper (97) and a plurality of abutting rollers (99), annular corrugated plates (910) are fixedly connected with the inner wall of the feeding pipe (92), a plurality of abutting rollers (99) are in rolling fit with the annular corrugated plates (910), and the outer peripheral surfaces of the feeding pipe (51) are fixedly connected with the outer peripheral adjusting parts of the feeding pipe (19).
  7. 7. The hydraulic driving fan for the air-blowing no-tillage planter capable of accurately adjusting speed according to claim 6, wherein the multidirectional vibration blanking assembly (9) further comprises a variable frequency motor (911) fixedly installed on the lower end face of the connecting frame (91), the output end of the variable frequency motor (911) penetrates through the bottom end of the connecting frame (91) and is fixedly connected with a driving gear (912), the peripheral wall of the switching tube (94) is fixedly connected with a transmission toothed ring (913), and the transmission toothed ring (913) is meshed with the driving gear (912) in transmission fit.
  8. 8. The hydraulic driving fan for the air-blown no-tillage planter capable of accurately adjusting speed according to claim 6, wherein the self-adaptive vibration adjusting component (19) comprises a variable resistance rod (191) fixedly connected to the peripheral wall of the blanking pipe (51), two sliding sheets (192) are slidably connected to the peripheral wall of the variable resistance rod (191), guide rods (193) are rotatably connected to the end parts of the two inner rotating rods (54), and the end parts of the two guide rods (193) are fixedly connected with the two sliding sheets (192) respectively; The variable resistor rod (191) and the two sliding sheets (192) form a sliding rheostat, the sliding rheostat and the variable frequency motor (911) are electrically connected with an external power supply, and in the back sliding process of the two sliding sheets (192), the resistance value of the sliding rheostat in a closed circuit formed by the variable resistor rod (191), the two sliding sheets (192), the variable frequency motor (911) and the external power supply is increased.

Description

But accurate speed governing's hydraulic drive fan for no-tillage seeder of air-blowing formula Technical Field The invention relates to the technical field of agricultural machinery, in particular to a hydraulic drive fan for an air-blowing no-tillage planter capable of accurately regulating speed. Background The air-blowing no-tillage planter is key equipment in modern accurate agriculture, and utilizes high-speed air flow to blow seeds into seed furrows, and has the advantages of uniform sowing, small damage to seeds, high operation efficiency and the like. The core component is a fan which generates high-speed airflow. At present, most fans of air-blowing no-tillage seeding machines are driven mechanically, and mainly have two modes, namely, the fans are driven after the speed of a power output shaft (PTO) of a tractor is increased through a universal transmission shaft and a gear box, and the fans are driven by a land wheel through a chain or belt transmission mechanism. The two traditional driving modes have the inherent defects that 1, a large number of mechanical parts such as a universal joint transmission shaft, a speed increasing box, a belt pulley and a chain are needed, the structure is large, the occupied space is large, certain installation centering precision requirements exist, 2, the transmission efficiency is low, the energy loss is remarkable due to multi-stage mechanical transmission, 3, the rotating speed of a fan is strongly related to the advancing speed of a tractor or the fixed rotating speed of a PTO, independent and flexible stepless speed regulation cannot be carried out according to actual sowing requirements (such as the air flow speed required by seeds with different particle sizes), the air blowing type sowing quality is influenced, 4, the mechanical transmission parts are easy to wear, periodic maintenance is needed, and potential safety hazards exist for the high-speed transmission parts. In addition, the seeds are easy to be blocked in a feeding pipeline in the feeding process (before the seeds are discharged by blowing), so that the seed blowing type seeding process is blocked, the seeding efficiency is affected, the seeds are assisted in a vibration mode at present, and seeds with different particle sizes are difficult to realize uniform falling in the discharging process, such as the accumulating property of the seeds with larger particle sizes is poorer than that of the seeds with smaller particle sizes, the seeds are easy to damage by high-frequency vibration, the accumulating property and the agglomeration property of the seeds with smaller particle sizes are stronger, the adsorption force between the seeds is difficult to break by low-frequency vibration, the seeds are difficult to uniformly discharge, uneven seed seeding density is caused, and the uniformity and the continuity of seed seeding are affected. Therefore, a fan driving scheme with simplified structure, flexible air blowing speed regulation, high energy efficiency and reliable seeding work is urgently needed. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides the hydraulic drive fan for the air-blowing type no-tillage planter capable of accurately regulating speed, which can effectively solve the problems that independent and flexible stepless speed regulation cannot be carried out according to actual sowing demands in the prior art, and seeds are easy to generate blockage and clamping stagnation and difficult to fall uniformly, so that sowing efficiency, sowing uniformity and continuity are affected. In order to achieve the above purpose, the invention is realized by the following technical scheme: The invention provides a hydraulic drive fan for an air-blowing no-tillage planter capable of accurately regulating speed, which comprises: the fan comprises a fan shell, wherein a hydraulic motor is fixedly arranged on the outer wall of the fan shell, a plurality of oil inlet pipes are fixedly communicated with an oil inlet port of the hydraulic motor, exhaust pipes are fixedly communicated with the circumferential side wall of the fan shell, and an adaptive speed regulating assembly is fixedly communicated with the top end of each exhaust pipe; The self-adaptive speed regulation assembly comprises a blanking pipe fixedly communicated with the top end of an exhaust pipe, a guide ring is fixedly connected to the inner wall of the blanking pipe, two arc-shaped sliding holes are formed in the side wall of the blanking pipe, two inner rotating rods are matched at the arc-shaped sliding holes in a rolling mode, two electric push rods are fixedly installed on the outer peripheral wall of the blanking pipe through an annular frame, supporting shaft seats are fixedly connected to the telescopic ends of the two electric push rods, the two supporting shaft seats are in transmission connection with the end parts of the two inner rotating rods through transmission rods, seed