A modular rice transplanter with adjustable width and narrow rows

Abstract

This invention relates to a modular rice transplanter with adjustable row spacing, comprising: several planting units, an upper and lower positioning slide rail for the seedling box, a seedling box support, a transplanting shaft, a fixed beam, a power transmission box, a driven pulley shaft, a driving pulley shaft, and four pulley shaft supports. Each planting unit includes a seedling box unit, a slide rail, a support arm, and two seedling box unit fixing plates, with row spacing adjustment gaps between the seedling box units. The transplanter is divided into several planting units; when adjusting the row spacing, the parts within the planting unit are adjusted accordingly, achieving a fixed narrow row spacing and stepless adjustment of the wide row spacing. This invention has a reasonable and compact structure, is simple in design, and is easy to adjust. It allows selection of the required row spacing according to different conditions, achieving ventilation, light penetration, and pest and disease prevention, thereby increasing rice yield. The steplessly adjustable row spacing transplanter adapts to my country's diverse rice planting systems, and compared with existing adjustable row spacing transplanters, this invention has better and wider applicability.

Description

Technical Field

[0001] This invention relates to planting machinery in the field of agricultural machinery, and more particularly to a modular rice transplanter with adjustable width and narrow rows. Background Technology

[0002] Currently, rice transplanters mainly use equal row spacing, with the support arms fixed to the support beam by bolts. The row spacing is primarily 250mm and 300mm, and is fixed and not adjustable. Equal row spacing can lead to poor ventilation for the seedlings, resulting in rice diseases and pests. Furthermore, uniform planting causes insufficient sunlight, weakening photosynthesis and significantly reducing rice yield. Wide-narrow row transplanters, by alternating between wide and narrow row spacing, ensure a reasonable number of planting holes per unit area, which is beneficial for increasing ventilation and light penetration between rice plants, and also increases light exposure per unit leaf area, achieving the goal of high-quality rice and increased yield.

[0003] my country has a vast territory with significant differences in climate, topography, and other factors across regions. This results in a wide variety of rice types and varieties, as well as varying planting methods and soil conditions, thus requiring different dense planting regimes for rice transplanting. Currently, most rice transplanters on the market have fixed row widths or adjustable settings, preventing stepless row spacing adjustment. These types of transplanters cannot meet the diverse agronomic requirements of rice production.

[0004] Application No. 201010127011.8, entitled "Wide-Narrow Row Rice Transplanter," proposes a rice transplanter capable of transplanting rice in both wide and narrow rows. The seedbed is divided into several seedbed placement units, each equipped with two seedling picking and planting mechanisms spaced at a narrow row spacing. The spacing between the seedling picking and planting mechanisms in adjacent units is at a wide row spacing, enabling alternating planting of rice in wide and narrow row spacings. However, the row spacing of this transplanter is fixed, making it unsuitable for adjusting the row spacing according to rice planting requirements for cross-regional operations. This is not suitable for my country's diverse rice planting system and hinders the large-scale promotion and application of mechanized rice transplanting.

[0005] Application No. 200810022223.2, entitled "Adjustable Row Spacing Rice Transplanter," proposes a rice transplanter with adjustable row spacing. Its characteristic feature is that the transplanting arm support has a row spacing adjustment mechanism with adjustable spacing between the inner and outer seedling claws. The seedling box plate has a movable stop bar on its upper part, adjustable in distance relative to the central fixed stop bar, with the movable stop bar positioned on both sides of the fixed stop bar. The row spacing adjustment mechanism of this rice transplanter adjusts the row spacing by changing the length of the driven sprocket shaft. The sliding support sleeve has at least two positioning holes on its outer wall, and corresponding positioning screws are provided on the transplanting arm support. While it has a limited number of adjustment levels, it lacks a matching seedling pick-up port, and the adjustable row spacing range is very small, thus failing to achieve stepless adjustment of the transplanting row spacing. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a modular wide-narrow row rice transplanter with adjustable row spacing, enabling fixed narrow rows and stepless adjustment of wide row spacing to meet the transplanting requirements of different row spacings and achieve a scientific and reasonable wide-narrow row planting mode. This transplanter can adapt to the diverse rice planting systems in various regions.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A modular adjustable rice transplanter with wide and narrow rows includes: several planting units, a seedling box positioning upper slide rail 15, a seedling box positioning lower slide rail 17, a seedling box support 18, a transplanting shaft 11, a fixed beam 14, a power transmission box 22, a driven pulley shaft 24, a driving pulley shaft 29, and four pulley shaft supports 27.

[0009] Each planting unit includes a seedling box unit, a slide rail, a support arm 8, and two seedling box unit fixing plates 16. Each seedling box unit includes two seedling placement units, which are arranged side by side. The upper and middle parts of the two seedling placement units are fixed together by a seedling box unit fixing plate 16. The seedling placement unit includes a seedling box bottom plate 1, a seedling box partition 2, an insert plate 3, a seedling conveyor belt 19, a driving pulley 28, and a driven pulley 26. The seedling conveyor belt 19 is installed in the square gap at the bottom of the seedling box bottom plate 1 through the driving pulley 28 and the driven pulley 26.

[0010] Each seedling box unit fixing plate 16 is fixedly connected to the two seedling box bottom plates 1 by a number of screws or bolts. The two seedling box unit fixing plates 16 are respectively connected to the seedling box positioning upper slide rail 15 and the seedling box positioning lower slide rail 17. The connection is provided with positioning bolt holes and connected by T-bolts 30.

[0011] The seedling box unit and the support arm 8 are movable structures. The seedling box unit is installed on the seedling box positioning upper slide 15 and the seedling box positioning lower slide 17, and can move along the seedling box positioning upper slide 15 and the seedling box positioning lower slide 17; one end of the support arm 8 is installed on the fixed beam 14, and can move along the fixed beam 14 to adjust the row spacing.

[0012] The upper part of the seedling box unit is supported by the seedling box bracket 18, and the lower part is supported on the slide rail. The lower end of the seedling box bracket 18 is fixed to the fixed beam 14; the slide rail is fixed to the support arm 8 through the support rod 13.

[0013] The driving pulley shaft 29 and the driven pulley shaft 24 are configured as hexagonal shafts. The driving pulley shaft 29 is connected to the longitudinal seedling feeding drive mechanism. The two left-side pulley shaft brackets 27 are installed on the leftmost seedling box partition 2 of the left seedling box unit, and the two right-side pulley shaft brackets 27 are installed on the rightmost seedling box partition 2 of the right seedling box unit. The driving pulley shaft 29 is installed in the two upper pulley shaft brackets 27, and the driven pulley shaft 24 is installed in the two lower pulley shaft brackets 27. The driving pulley 28 and the driven pulley 26 are respectively installed on the driving pulley shaft 29 and the driven pulley shaft 24. When adjusting the row spacing, the driving pulley 28 and the driven pulley 26 can move left and right on the hexagonal shaft.

[0014] The distance between adjacent seedling claws in adjacent planting units is the wide row spacing, which is infinitely adjustable. The distance between the left and right seedling claws within a planting unit is the narrow row spacing, which is fixed. When adjusting the wide row spacing, each planting unit can move left or right, and the seedling box unit, slide rail, and support arm within the planting unit are adjusted accordingly. The narrow row spacing is 15–20 cm, and the adjustable range of the wide row spacing is 15–50 cm. The minimum wide row spacing is equal to the narrow row spacing. For example, when the narrow row spacing is 20 cm, the adjustable range of the wide row spacing is 20–50 cm.

[0015] A row spacing adjustment gap is formed between the partitions of adjacent seedling boxes. The maximum distance of the row spacing adjustment gap is 30-35cm, and the minimum distance is 0cm. When the row spacing adjustment gap is at its maximum, the wide row spacing is at its maximum; when the row spacing adjustment gap is at its minimum of 0cm, the wide row spacing is at its minimum. At this time, the wide row spacing is equal to the narrow row spacing, and the rice transplanter is an equal row spacing rice transplanter.

[0016] The upper and lower positioning slide rails 15 and 17 of the seedling box are connected to the upper and lower seedling box unit fixing plates 16 by T-bolts. When adjusting the row spacing, the T-bolts are loosened, and the heads of the T-bolts can slide in the upper and lower positioning slide rails 15 and 17, allowing the upper and lower seedling box unit fixing plates 16 to move the seedling box unit left and right. When the required row spacing is achieved, the T-bolts are tightened to fix the position of the seedling box unit.

[0017] The seedling box positioning slide 15 has two slides. One slide is used to adjust the row spacing and gap, and the other slide is in sliding contact with the seedling box support 18 to support the entire seedling box unit. When feeding seedlings laterally, the seedling box unit slides left and right on the slide rail, and the seedling box positioning slide 15 and the seedling box support 18 also slide relative to each other.

[0018] Each section of the slide rail has two seedling pick-up ports 7, and each seedling pick-up port 7 corresponds to a seedling placement unit.

[0019] Taking a 6-row rice transplanter as an example, there are three sections of slide rails: left slide rail 25, middle slide rail 23, and right slide rail 20. When the row spacing is at its maximum, there is a certain distance between the slide rails; when the row spacing is at its minimum, the slide rails can be seamlessly connected. The right side of the left slide rail is recessed by one plate thickness at its connection with the middle slide rail, and the left side of the right slide rail is recessed by one plate thickness at its connection with the middle slide rail. No reinforcing ribs are provided at the connection between the left and right slide rails and the middle slide rail. A groove is provided on the left side wall of the left seedling picking opening and the right side wall of the right seedling picking opening of the middle slide rail, one plate thickness in diameter. The groove is one plate thickness wide and its length is the plate length of the recessed area of ​​the left and right slide rails.

[0020] One end of the support arm 8 is mounted on the fixed beam 14 by two U-bolts 21. The fixed beam 14 can be set with row spacing adjustment scale for easy row spacing adjustment.

[0021] Each support arm 8 has a driven sprocket 33 connected to two rotary boxes 9. Each rotary box 9 has two planting arms 12, and each planting arm 12 has a seedling claw 31. The distance between the left and right seedling claws 31 is the narrow row spacing, which is fixed. The drive sprocket 32 ​​of the support arm 8 is connected to the planting shaft 11 through a bushing 10. The planting shaft 11 is a hexagonal shaft, and the support arm 8 can move left and right on the hexagonal shaft when adjusting the row spacing. The planting shaft 11 is connected to the power transmission box 22.

[0022] The active pulley shaft 29, the driven pulley shaft 24, and the transplanting shaft 11 are hexagonal shafts, which not only make it easy to adjust the row spacing, but also make it easy to increase or decrease the number of support arms 8 and seedling box units, thereby adjusting the number of rows.

[0023] The beneficial effects of this invention are:

[0024] This invention features a reasonable and compact structure, simple design, and convenient adjustment. It allows for selection of row spacing according to different conditions, enabling scientifically sound wide and narrow row planting patterns for mechanized rice transplanting. This achieves the goals of ventilation, light penetration, and pest and disease prevention, thereby increasing rice yield. This modular, infinitely adjustable row spacing rice transplanter adapts to my country's diverse rice planting systems. Compared to existing high-speed rice transplanters with adjustable row spacing on the market, this invention has better and wider applicability. Attached Figure Description

[0025] The present invention includes the following figures:

[0026] Figure 1 This is a three-dimensional frontal view of the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram of the overall rear side of the present invention;

[0028] Figure 3 This is a three-dimensional schematic diagram of the rice transplanter of the present invention with equal row spacing;

[0029] Figure 4 yes Figure 2 Enlarged schematic diagram of part A;

[0030] Figure 5 yes Figure 2 Enlarged schematic diagram of part B;

[0031] Figure 6 yes Figure 3 Enlarged schematic diagram of part C;

[0032] Figure 7 This is a three-dimensional schematic diagram of the left slide rail of the present invention;

[0033] Figure 8 This is a three-dimensional schematic diagram of the sliding rail of the present invention;

[0034] Figure 9 This is a three-dimensional schematic diagram of the right slide rail of the present invention;

[0035] Figure 10 yes Figure 2 Enlarged schematic diagram of part D;

[0036] Figure 11 This is a three-dimensional schematic diagram of the support arm of the present invention;

[0037] Figure 12 yes Figure 11 A sectional view.

[0038] The attached diagram is labeled as follows: 1. Seedling box bottom plate; 2. Seedling box partition; 3. Insertion plate; 4. Left seedling box unit; 5. Middle seedling box unit; 6. Right seedling box unit; 7. Seedling inlet; 8. Support arm; 9. Rotary box; 10. Bushing; 11. Transplanting shaft; 12. Transplanting arm; 13. Support rod; 14. Fixed beam; 15. Seedling box positioning upper slide rail; 16. Seedling box unit fixing plate; 17. Seedling box positioning lower slide rail; 18. Seedling box bracket; 19. Seedling conveyor belt; 20. Right slide rail; 21. U-bolt; 22. Power transmission box; 23. Middle slide rail; 24. Driven pulley shaft; 25. Left slide rail; 26. Driven pulley; 27. Pulley shaft bracket; 28. Driven pulley; 29. ​​Driven pulley shaft; 30. T-bolt; 31. Seedling claw; 32. Driven sprocket; 33. Driven sprocket. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] like Figure 1-10 As shown, the modular adjustable wide and narrow row rice transplanter of the present invention includes several planting units, seedling box positioning upper slide rail 15, seedling box positioning lower slide rail 17, seedling box support 18, transplanting shaft 11, fixed beam 14, power transmission box 22, driven pulley shaft 24, driving pulley shaft 29 and four pulley shaft supports 27.

[0041] Each planting unit includes a seedling box unit, a slide rail, a support arm 8, and two seedling box unit fixing plates 16. Each seedling box unit includes two seedling placement units, which are arranged side by side. The upper and middle parts of the two seedling placement units are respectively fixed together by a seedling box unit fixing plate 16. The seedling placement unit includes a seedling box bottom plate 1, a seedling box partition 2, an insert plate 3, a seedling conveyor belt 19, a drive pulley 28, and a driven pulley 26. The seedling conveyor belt 19 is installed in the square gap at the bottom of the seedling box bottom plate 1 through the drive pulley 28 and the driven pulley 26. The drive pulley shaft 29 and the driven pulley shaft 24 are set as hexagonal shafts. The drive pulley shaft 29 is connected to the longitudinal seedling delivery drive mechanism.

[0042] The two left-hand pulley axle brackets 27 are installed on the leftmost seedling box partition 2 of the left seedling box unit, and the two right-hand pulley axle brackets 27 are installed on the rightmost seedling box partition 2 of the right seedling box unit. The driving pulley axle 29 is installed in the two upper pulley axle brackets 27, and the driven pulley axle 24 is installed in the two lower pulley axle brackets 27. The driving pulley 28 and the driven pulley 26 are respectively installed on the driving pulley axle 29 and the driven pulley axle 24. When adjusting the row spacing, the driving pulley 28 and the driven pulley 26 can move left and right on the hexagonal shaft.

[0043] Each seedling box unit fixing plate 16 is fixed to the two seedling box bottom plates 1 by a number of screws or bolts. The two seedling box unit fixing plates 16 are respectively connected to the seedling box positioning upper slide rail 15 and the seedling box positioning lower slide rail 17. The connection is provided with positioning bolt holes and connected by T-bolts 30.

[0044] The seedling box unit and the support arm 8 are movable structures. The seedling box unit is installed on the seedling box positioning upper slide rail 15 and the seedling box positioning lower slide rail 17, and can move along the seedling box positioning upper slide rail 15 and the seedling box positioning lower slide rail 17. One end of the support arm 8 is installed on the fixed beam 14, and can move along the fixed beam 14, which facilitates row spacing adjustment.

[0045] The distance between adjacent seedling claws in adjacent planting units is the wide row spacing, which is infinitely adjustable. The distance between the left and right seedling claws within a planting unit is the narrow row spacing, which is fixed. When adjusting the wide row spacing, each planting unit can move left or right, and the seedling box unit, slide rail, and support arm within the planting unit are adjusted accordingly. The narrow row spacing is 15–20 cm, and the adjustable range of the wide row spacing is 15–50 cm. The minimum wide row spacing is equal to the narrow row spacing. For example, when the narrow row spacing is 20 cm, the adjustable range of the wide row spacing is 20–50 cm.

[0046] A row spacing adjustment gap is formed between the partitions of adjacent seedling boxes. The maximum distance of the row spacing adjustment gap is 30-35cm, and the minimum distance is 0cm. When the row spacing adjustment gap is at its maximum, the wide row spacing is at its maximum; when the row spacing adjustment gap is at its minimum of 0cm, the wide row spacing is at its minimum. At this time, the wide row spacing is equal to the narrow row spacing, and the rice transplanter is an equal row spacing rice transplanter.

[0047] The upper and lower positioning slide rails 15 and 17 of the seedling box are connected to the upper and lower seedling box unit fixing plates 16 by T-bolts. When adjusting the row spacing, the T-bolts are loosened, and the heads of the T-bolts can slide in the upper and lower positioning slide rails 15 and 17, allowing the upper and lower seedling box unit fixing plates 16 to move the seedling box unit left and right. When the required row spacing is achieved, the T-bolts are tightened to fix the position of the seedling box unit.

[0048] The upper part of the seedling box unit is supported by the seedling box bracket 18, and the lower part is supported on the slide rail. The lower end of the seedling box bracket 18 is fixed to the fixed beam 14. The seedling box positioning slide rail 15 has two slide rails. One slide rail is used to adjust the row spacing and gap, and the other slide rail is in sliding contact with the seedling box bracket to support the entire seedling box unit. When feeding seedlings laterally, the seedling box unit slides left and right on the slide rail, and the seedling box positioning slide rail 15 and the seedling box bracket 18 also slide relative to each other.

[0049] The slide rail is fixed to the support arm 8 by the support rod 13. It moves with the support arm 8 when adjusting the row spacing, ensuring the relative position of the seedling picking opening 7 and the seedling claw remains unchanged, thus avoiding adjustment errors of the seedling picking opening 7. Each slide rail section has two seedling picking openings 7, each corresponding to one seedling placement unit. Taking a 6-row rice transplanter as an example, there are three slide rail sections: left slide rail 25, middle slide rail 23, and right slide rail 20. When the row spacing is at its maximum, there is a certain distance between the slide rails; when the row spacing is at its minimum, the slide rails can be seamlessly connected. The right side of the left slide rail is recessed by one plate thickness at its connection with the middle slide rail, and the left side of the right slide rail is recessed by one plate thickness at its connection with the middle slide rail. No reinforcing ribs are provided at the connection points between the left and right slide rails and the middle slide rail. A groove is provided on the left side wall of the left seedling picking opening and the right side wall of the right seedling picking opening of the middle slide rail, one plate thickness in diameter. The groove width is one plate thickness, and the groove length is the plate length of the recessed area of ​​the left and right slide rails.

[0050] One end of the support arm 8 is mounted on the fixed beam 14 via two U-bolts 21. The fixed beam 14 has a row spacing adjustment scale for easy row spacing adjustment. When adjusting the row spacing, loosening the U-bolts 21 allows the support arm 8 to move left and right. Once the desired row spacing is achieved, tightening the U-bolts 21 secures the support arm 8. Each support arm 8 contains a driven sprocket 33 and a driving sprocket 32. The driven sprocket 33 connects to two rotary boxes 9, each with two planting arms 12 and a seedling claw 31. The distance between the left and right seedling claws 31 is the narrow row spacing, which is fixed. The lower end of the support rod 13 is welded to the support arm 8. The driving sprocket of the support arm 8 is connected to the transplanting shaft 11 via a bushing 10. The transplanting shaft 11 is a hexagonal shaft, allowing the support arm 8 to move left and right on the hexagonal shaft during row spacing adjustment. The transplanting shaft 11 is also connected to the power transmission box 22.

[0051] The active pulley shaft 29, the driven pulley shaft 24, and the transplanting shaft 11 are hexagonal shafts, which not only make it easy to adjust the row spacing, but also make it easy to increase or decrease the number of support arms 8 and seedling box units, thereby adjusting the number of rows.

[0052] A modular adjustable rice transplanter with adjustable width and narrow rows is applicable to 6-row or 8-row transplanters. The following working process will be described in detail using a 6-row transplanter as an example.

[0053] The present invention discloses a modular adjustable rice transplanter with varying widths and heights, mainly comprising a left seedling box unit 4, a middle seedling box unit 5, a right seedling box unit 6, three support arms 8, a fixed beam 14, a right slide rail 20, a middle slide rail 23, and a left slide rail 25. Each of the left, middle, and right seedling box units includes two seedling placement units, arranged side-by-side. The upper and middle parts of each seedling placement unit are fixedly connected by a seedling box unit fixing plate 16. Each seedling placement unit includes a seedling box bottom plate 1, a seedling box partition 2, an insert plate 3, a seedling conveyor belt 19, a drive pulley 28, and a driven pulley 26. The seedling conveyor belt 19 is installed in a square opening at the bottom of the seedling box bottom plate 1 via the drive pulley 28 and the driven pulley 26. The drive pulley shaft 29 and the driven pulley shaft 24 are configured as hexagonal shafts, and the drive pulley shaft 29 is connected to a longitudinal seedling feeding drive mechanism.

[0054] Each seedling box unit fixing plate 16 is fixedly connected to the two seedling box base plates 1 by eight screws or bolts. The two seedling box unit fixing plates 16 are respectively connected to the seedling box positioning upper slide rail 15 and the seedling box positioning lower slide rail 17, with positioning bolt holes at the connection points, and connected by T-bolts 30. The seedling box positioning upper slide rail 15 has two slide rails, one slide rail is used to adjust the row spacing and gap, and the other slide rail is in sliding contact with the seedling box bracket 18 to support the entire seedling box. The seedling box bracket 18 is used to support the entire seedling box unit, and its lower end is fixed to the fixing beam 14 by bolts.

[0055] The right slide rail 20, middle slide rail 23, and left slide rail 25 are respectively fixedly connected to their respective support rods 13, which are welded to the support arm 8. One end of the support arm 8 is mounted on the fixed beam 14 by two U-bolts 21; the driven sprocket 33 of the support arm 8 is connected to two rotary boxes 9, and each rotary box 9 is provided with two planting arms 12; the driving sprocket 32 ​​of the support arm 8 is connected to the transplanting shaft 11 through the bushing 10. The transplanting shaft 11 is a hexagonal shaft, and the transplanting shaft 11 is also connected to the power transmission box 22.

[0056] When adjusting the row spacing, first move the entire seedling box to its left or right extreme positions, and then adjust the distance between adjacent seedling claws between planting units. When adjusting the row spacing, only the distance between the seedling claws of adjacent planting units needs to be measured; the distance of the row spacing adjustment gap between seedling box units does not need to be measured. When the fixed beam has row spacing adjustment scales, the distance between adjacent seedling claws between planting units can be adjusted directly without measuring the distance. The specific adjustment process is as follows:

[0057] First, loosen the U-bolt 21 and move the support arm 8. The drive sprocket of the support arm moves left and right on the transplanting shaft 11. The right slide rail 20, the middle slide rail 23, and the left slide rail 25 move with the support arm. The relative positions of the seedling opening 7 and the seedling claw 31 will not change. When the required row spacing is reached, tighten the U-bolt to fix the position of the support arm.

[0058] Next, when the entire seedling box is moved to the extreme left position, after adjusting the support arm to obtain the required row spacing, loosen the T-bolts 30 in the seedling box positioning upper slide rail and seedling box positioning lower slide rail, move the seedling box unit, and the head of the T-bolt can slide in the seedling box positioning upper slide rail 15 and seedling box positioning lower slide rail 17. At this time, the pulley moves left and right on the pulley shaft. When the left side of the seedling box partition in the middle and right side of each seedling box unit is aligned with the right side of the seedling taking port of the corresponding segmented slide rail, tighten the T-bolt to fix the position of the seedling box unit. The adjustment of this planting unit is completed.

[0059] Another scenario is as follows: When the entire seedling box is moved to the extreme right position, after adjusting the support arm to obtain the required row spacing, loosen the T-bolts 30 in the seedling box positioning upper slide and seedling box positioning lower slide, move the seedling box unit, and the head of the T-bolt can slide in the seedling box positioning upper slide and seedling box positioning lower slide. At this time, the pulley moves left and right on the pulley shaft. When the right side of the seedling box partition in the middle and left side of each seedling box unit is aligned with the left side of the seedling taking port of the corresponding segmented slide rail, tighten the T-bolt to fix the position of the seedling box unit. The adjustment of this planting unit is then complete.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0061] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A modular rice transplanter with adjustable width and narrow rows, characterized in that, include: Several planting units, seedling box positioning upper slide (15), seedling box positioning lower slide (17), seedling box support (18), transplanting shaft (11), fixed beam (14), power transmission box (22), driven pulley shaft (24), driving pulley shaft (29) and four pulley shaft supports (27); Each planting unit includes a seedling box unit, a slide rail, a support arm (8), and two seedling box unit fixing plates (16); each seedling box unit includes two seedling placement units, which are arranged side by side, and the upper and middle parts of the two seedling placement units are respectively fixed together by a seedling box unit fixing plate (16); the seedling placement unit includes a seedling box bottom plate (1), a seedling box partition (2), a insertion plate (3), a seedling conveyor belt (19), a drive pulley (28), and a driven pulley (26), and the seedling conveyor belt (19) is installed in the square gap at the bottom of the seedling box bottom plate (1) through the drive pulley (28) and the driven pulley (26); The upper end of the seedling box support (18) is slidably connected to the seedling box positioning upper slide rail (15), and the lower end of the seedling box support (18) is fixedly mounted on the fixed beam (14); the two seedling box unit fixing plates (16) are respectively connected to the seedling box positioning upper slide rail (15) and the seedling box positioning lower slide rail (17), and the seedling box unit can move left and right along the seedling box positioning upper slide rail (15) and the seedling box positioning lower slide rail (17) through the two seedling box unit fixing plates (16); the lower part of the seedling box unit is supported on the slide rail, and the slide rail is fixedly mounted on the support arm (8) through the support rod (13); one end of the support arm (8) is mounted on the fixed beam (14) and can move along the fixed beam (14); the driving pulley shaft (29) and the driven pulley shaft (24) are set as hexagonal shafts, and the two pulleys on the left are... A shaft bracket (27) is installed on the leftmost seedling box partition (2) of the left seedling box unit, and two pulley shaft brackets (27) on the right are installed on the rightmost seedling box partition (2) of the right seedling box unit; the active pulley shaft (29) is installed in the two upper pulley shaft brackets (27), and the driven pulley shaft (24) is installed in the two lower pulley shaft brackets (27); the active pulley (28) and the driven pulley (26) are respectively installed on the active pulley shaft (29) and the driven pulley shaft (24); the active pulley shaft (29) is connected to the longitudinal seedling feeding drive mechanism, and each seedling box unit fixing plate (16) is fixed to the two seedling box bottom plates (1) by several screws or bolts; the seedling box positioning upper slide rail (15) and the seedling box positioning lower slide rail (17) are respectively The seedling box is connected to the upper and lower seedling box unit fixing plates (16) by T-bolts (30). The seedling box positioning slide (15) has two slides. One slide is connected to the upper seedling box unit fixing plate (16), and the other slide is slidably connected to the seedling box bracket (18) to support the upper part of the seedling box unit. When the seedlings are fed horizontally, the seedling box unit slides left and right, and the seedling box positioning slide (15) and the seedling box bracket (18) also slide relative to each other. One end of the support arm (8) is installed on the fixed beam (14) by two U-bolts (21). The fixed beam (14) is set with row spacing adjustment scale for easy row spacing adjustment. The support arm (8) is equipped with a driven sprocket (33) and a driving sprocket (32). The driven sprocket (33) is connected to two rotary boxes (9). Each rotary box (9) is equipped with two planting arms (12), and each planting arm (12) is equipped with a seedling claw (31); the drive sprocket of the support arm (8) is connected to the transplanting shaft (11) through the bushing (10); the drive sprockets (32) of each support arm (8) are connected to each other through the transplanting shaft (11), the transplanting shaft (11) is connected to the power transmission box (22), and the power of the transplanting shaft (11) comes from the power transmission box (22). The distance between adjacent seedling claws of adjacent planting units is the wide row spacing, which can be infinitely adjusted. The distance between the left and right seedling claws in the planting unit is the narrow row spacing, which is fixed. When the wide row spacing is adjusted, each planting unit moves left and right, and the seedling box unit, slide rail and support arm in the planting unit are adjusted accordingly.The narrow row spacing is 15-20cm, the wide row spacing is adjustable from 15-50cm, and the minimum wide row spacing is equal to the narrow row spacing. A row spacing adjustment gap is formed between the partitions of adjacent seedling boxes. The maximum distance of the row spacing adjustment gap is 30-35cm, and the minimum distance is 0cm. When the row spacing adjustment gap is at its maximum, the wide row spacing is at its maximum. When the row spacing adjustment gap is at its minimum, the wide row spacing is at its minimum, and the wide row spacing is at its minimum. At this time, the wide row spacing is equal to the narrow row spacing. The rice transplanter is an equal row spacing rice transplanter. The driving pulley shaft (29), the driven pulley shaft (24), and the transplanting shaft (11) are hexagonal shafts. Each section of the slide rail is provided with two seedling pick-up ports (7). Each seedling pick-up port (7) corresponds to a seedling placement unit. The rice transplanter is a 6-row transplanter. The machine includes a left slide rail (25), a middle slide rail (23), and a right slide rail (20). When the row spacing is at its maximum, there is a certain distance between the slide rails. When the row spacing is at its minimum, the slide rails are seamlessly connected together. The right side of the left slide rail (25) is recessed by one plate thickness at the connection with the middle slide rail (23), and the left side of the right slide rail (20) is recessed by one plate thickness at the connection with the middle slide rail (23). No reinforcing ribs are provided at the connection between the left and right slide rails and the middle slide rail. A groove is provided on the left side wall of the left seedling picking port and the right side wall of the right seedling picking port of the middle slide rail at a distance of one plate thickness. The groove width is one plate thickness, and the groove length is the plate length of the recessed part of the left and right slide rails. When adjusting the row spacing, first loosen the U-bolts, move the support arm, and the drive sprocket of the support arm moves left and right on the transplanting shaft. The right slide rail, middle slide rail, and left slide rail move with the support arm. The relative positions of the seedling inlet and the seedling claw will not change. When the required row spacing is reached, tighten the U-bolts to fix the position of the support arm. Next, when the entire seedling box is moved to the left extreme position, after adjusting the support arm to obtain the required row spacing, loosen the T-bolts in the seedling box positioning upper slide and seedling box positioning lower slide, move the seedling box unit, and the head of the T-bolt can slide in the seedling box positioning upper slide and seedling box positioning lower slide. At this time, the pulley moves left and right on the pulley shaft. When the left side of the seedling box partition in the middle and right side of each seedling box unit is aligned with the right side of the seedling taking port of the corresponding segmented slide rail, tighten the T-bolt to fix the position of the seedling box unit. The adjustment of this planting unit is completed. When the entire seedling box is moved to the right extreme position, after adjusting the support arm to achieve the required row spacing, loosen the T-bolts in the seedling box positioning upper slide and seedling box positioning lower slide, move the seedling box unit, and the head of the T-bolt can slide in the seedling box positioning upper slide and seedling box positioning lower slide. At this time, the pulley moves left and right on the pulley shaft. When the right side of the seedling box partition in the middle and left side of each seedling box unit is aligned with the left side of the seedling taking port of the corresponding segmented slide rail, tighten the T-bolt to fix the position of the seedling box unit. The adjustment of this planting unit is now complete.

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