A hydraulic retractable orchard fertilizer spreader
By designing a hydraulic shrink orchard fertilizer, the problem of the existing fertilizers being unable to adjust the width and unable to fertilize multiple rows of fruit trees at the same time is solved, and width adjustment and fertilization efficiency is improved. It is suitable for orchards with multiple row spacing.
Patent Information
- Application Number
- CN202111503624.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-09
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2041-12-09
AI Technical Summary
The existing fertilizers cannot adjust the width and cannot fertilize multiple rows of fruit trees at the same time, resulting in inefficient fertilization.
A hydraulically contracted orchard fertilization machine is designed, using a front suspension main frame and two sets of width adjustment hydraulic cylinders. The width of the fertilization assembly is adjusted through the hydraulic cylinder, and a adjustment rod assembly and a cable-stay hydraulic cylinder are installed on the fertilization assembly to achieve the width adjustment of the fertilization machine and the improvement of fertilization efficiency.
The width adjustment of the fertilizer is realized, and two rows of fruit trees can be fertilized at one time. It is suitable for orchards with multiple row spacing, significantly improving the fertilization efficiency.
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Figure CN114097383B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of agricultural machinery, in particular to a hydraulic contraction type orchard fertilizer spreader. Background Art
[0002] Fertilizer applicator (chemical fertilizer) is a kind of solid fertilizer application machine. According to the different fertilization methods, it can be divided into: one type of fertilizer applicator (solid, liquid); the other type of manure applicator (solid, liquid). Since farmyard manure and chemical fertilizer, liquid fertilizer and fixed fertilizer have very different properties, the structure and principle of the machines that apply these fertilizers are also different.
[0003] The fertilization process of the fertilizer spreader in traditional technology is complicated, and for environments with width restrictions, the fertilizer spreader cannot adjust the width in time and needs to be adjusted manually. For multiple rows of fruit trees, the existing fertilizer spreader can only fertilize one row at a time and cannot fertilize multiple rows. Summary of the invention
[0004] In view of the problem that the width of the fertilizer spreader in the prior art cannot be adjusted and multiple rows cannot be fertilized, the present invention provides a hydraulic retractable orchard fertilizer spreader with a simple structure and easy operation. It effectively integrates the traditional fertilization process, has a width adjustment function and a simple structure, and can fertilize two rows of fruit trees at one time. It is not only suitable for orchards with various row spacings, but also greatly improves the fertilization efficiency.
[0005] The present invention is achieved through the following technical solutions:
[0006] A hydraulic retractable orchard fertilizer spreader comprises a front suspension main frame, two sets of width-adjusting hydraulic cylinders and two sets of fertilizer assemblies; the two sets of fertilizer assemblies are respectively arranged at the left and right ends of the front suspension main frame, wherein the two sets of fertilizer assemblies have the same structure, a hydraulic fixing seat is arranged on the front suspension main frame, one end of the two sets of width-adjusting hydraulic cylinders are hingedly assembled on the hydraulic fixing seat, the other ends of the two sets of width-adjusting hydraulic cylinders are respectively assembled on the two sets of fertilizer assemblies, and the two sets of fertilizer assemblies are respectively expanded or merged by the two sets of hydraulic assemblies.
[0007] Preferably, the hydraulic fixing seat is arranged in the middle of the front suspension main body frame, and the two groups of fertilization components are centered on the hydraulic fixing seat, and the two groups of fertilization components are respectively expanded or merged by the two groups of hydraulic components.
[0008] Preferably, the fertilization assembly includes an adjusting rod assembly and a fertilization unit; one end of the adjusting rod assembly is hinged to the front suspension main body frame, and the other end is provided with a fertilizer machine connecting frame, the fertilization unit is assembled on the fertilizer machine connecting frame, and one end of the width adjustment hydraulic cylinder is fixedly set on the adjusting rod assembly.
[0009] Furthermore, an oblique hydraulic cylinder is provided between the adjusting rod assembly and the front suspension main frame. One end of the oblique hydraulic cylinder is hinged to the front suspension main frame, and the other end is slidably connected to the adjusting rod assembly, so as to retract or unfold the fertilizing unit along the direction of the adjusting rod assembly.
[0010] Furthermore, the adjusting rod assembly includes a first width adjusting rod and a second width adjusting rod, the first width adjusting rod and the second width adjusting rod are arranged in parallel, one end of the inclined hydraulic cylinder is hinged on a sliding member, and the sliding member is slidably connected to the first width adjusting rod and the second width adjusting rod.
[0011] Furthermore, the fertilization unit includes a fertilizer frame, a transmission assembly, a ground wheel, a hexagonal shaft for fertilizer, a fertilizer dispenser, a ground wheel shaft and a plow assembly; the fixed end of the fertilizer frame is fixed on the fertilizer machine connecting frame, the ground wheel shaft and the hexagonal shaft for fertilizer are parallelly assembled on the fertilizer frame, one end of the transmission assembly is sleeved on one end of the ground wheel shaft and the hexagonal shaft for fertilizer, the ground wheel is assembled on the other end of the ground wheel shaft, the plow assembly is assembled on the bottom of the fertilizer frame, the fertilizer dispenser is fixedly assembled on the fertilizer frame, a plurality of fertilizer boxes are arranged in the fertilizer dispenser, and the output ends of the plurality of fertilizer boxes are arranged toward the plow assembly, and the fertilizer dispenser is connected to the hexagonal shaft for fertilizer, and the transmission assembly is driven by the rotation of the ground wheel via the ground wheel shaft, and the transmission assembly drives a plurality of fertilizer boxes in the fertilizer dispenser via the hexagonal shaft for fertilizer storage.
[0012] Furthermore, the transmission assembly includes a driving sprocket and a driven sprocket, wherein the driving sprocket is mounted on one end of the ground wheel shaft, and the driven sprocket is mounted on one end of the fertilization hexagonal shaft, and a transmission chain is sleeved between the driving sprocket and the driven sprocket.
[0013] Furthermore, the fertilization unit also includes a fertilizer box, which is mounted on the fertilization frame. The fertilizer box is provided with a fertilizer opening, and the fertilizer opening is aligned with the input end of the fertilizer discharger.
[0014] Furthermore, the fertilization unit also includes a scraper board, which is arranged at the rear of the plow assembly on the fertilization frame and is used for scraping soil after plowing. The scraper board is provided with a soil board adjustment screw.
[0015] Further, the plow assembly includes a furrowing plow and a fertilizer plow
[0016] Compared with the prior art, the present invention has the following beneficial technical effects:
[0017] The present invention provides a hydraulic retractable orchard fertilizer spreader. Fertilizer assemblies are respectively arranged at the left and right ends of a front suspension main body frame. Two groups of fertilizer assemblies can fertilize multiple rows of fruit trees at one time. The two groups of fertilizer assemblies are respectively width-adjusted by width-adjusting hydraulic cylinders, and can adapt to different environments to fertilize fruit trees in the orchard, thereby effectively improving the fertilization efficiency. A hydraulic fixing seat is arranged on the front suspension main body frame. One ends of the two groups of width-adjusting hydraulic cylinders are hingedly assembled on the hydraulic fixing seat, and the other ends of the two groups of width-adjusting hydraulic cylinders are respectively assembled on the two groups of fertilizer assemblies, so as to enhance the structural reliability of the width-adjusting part.
[0018] Furthermore, the hydraulic fixing seat is arranged in the middle of the front suspension main frame, and the two groups of fertilization components are centered on the hydraulic fixing seat. The two groups of fertilization components are respectively expanded or merged by the two groups of hydraulic components, so as to facilitate the width adjustment of the two groups of fertilization components.
[0019] Furthermore, the fertilization assembly includes an adjusting rod assembly and a fertilization unit; the adjusting rod assembly facilitates the width adjustment of the entire fertilizer spreader.
[0020] Furthermore, an oblique hydraulic cylinder is provided between the adjusting rod assembly and the front suspension main frame. One end of the oblique hydraulic cylinder is hinged to the front suspension main frame, and the other end is slidably connected to the adjusting rod assembly, which is used to retract or unfold the fertilizer unit along the direction of the adjusting rod assembly, thereby improving the flexibility of the width adjustment and retraction setting of the fertilizer spreader.
[0021] Furthermore, the first width adjustment rod and the second width adjustment rod are arranged in parallel to form a parallelogram. One end of the inclined hydraulic cylinder is hinged on the sliding member, and the sliding member is slidably connected to the first width adjustment rod and the second width adjustment rod, so as to facilitate the effective and flexible adjustment of the width and position of the fertilizer spreader.
[0022] Furthermore, the fertilization unit effectively improves the fertilization efficiency and facilitates one-time fertilization and soil covering. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is an overall schematic diagram of the hydraulic contraction type orchard fertilizer spreader of the present invention;
[0024] Figure 2 This is an overall schematic diagram of the hydraulic contraction type orchard fertilizer spreader in the present invention when it is not unfolded;
[0025] Figure 3 It is a structural schematic diagram of the width adjustment part of the hydraulic contraction type orchard fertilizer spreader in the present invention.
[0026] In the figure: 1-front suspension main frame; 2-width adjustment hydraulic cylinder; 3-first width adjustment rod; 4-oblique pull hydraulic cylinder; 5-fertilizer connecting frame; 6-ground wheel shaft; 7-ditching plow; 8-ground wheel; 9-fertilizer plow; 10-scraper plate; 11-fertilizer box; 12-fertilizer frame; 13-second width adjustment rod; 14-driving sprocket; 15-driven sprocket; 16-soil plate adjustment screw rod; 17-fertilizer hexagonal shaft; 18-fertilizer discharger; 19-hydraulic fixing seat, 20-fertilizer port. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.
[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0029] The present invention is further described in detail below in conjunction with the accompanying drawings:
[0030] See also Figure 1 In one embodiment of the present invention, a hydraulic retractable orchard fertilizer applicator is provided, which has a simple structure and is easy to operate. It effectively integrates the traditional fertilization process, has a width adjustment function and a simple structure, and can fertilize two rows of fruit trees at one time. It is not only suitable for orchards with various row spacings, but also greatly improves the fertilization efficiency.
[0031] Specifically, the hydraulic retractable orchard fertilizer spreader comprises a front suspension main frame 1, two sets of width adjustment hydraulic cylinders 2 and two sets of fertilizer components; the two sets of fertilizer components are respectively arranged at the left and right ends of the front suspension main frame 1, wherein the two sets of fertilizer components have the same structure, a hydraulic fixing seat 19 is provided on the front suspension main frame 1, one end of the two sets of width adjustment hydraulic cylinders 2 are hingedly assembled on the hydraulic fixing seat 19, the other ends of the two sets of width adjustment hydraulic cylinders 2 are respectively assembled on the two sets of fertilizer components, and the two sets of fertilizer components are respectively expanded or merged by the two sets of hydraulic components.
[0032] Specifically, the hydraulic fixing seat 19 is arranged in the middle of the front suspension main frame 1, and the two groups of fertilization components are centered on the hydraulic fixing seat 19, and the two groups of fertilization components are respectively expanded or merged by the two groups of hydraulic components.
[0033] Specifically, the fertilization assembly includes an adjusting rod assembly and a fertilization unit; one end of the adjusting rod assembly is hinged on the front suspension main body frame 1, and the other end is provided with a fertilizer machine connecting frame 5, the fertilization unit is assembled on the fertilizer machine connecting frame 5, and one end of the width adjustment hydraulic cylinder 2 is fixedly set on the adjusting rod assembly.
[0034] Among them, an oblique hydraulic cylinder 4 is also provided between the adjusting rod assembly and the front suspension main frame 1. One end of the oblique hydraulic cylinder 4 is hinged on the front suspension main frame 1, and the other end is slidably connected to the adjusting rod assembly, which is used to retract or unfold the fertilization unit along the direction of the adjusting rod assembly.
[0035] according to Figure 3 As shown, the adjusting rod assembly includes a first width adjusting rod 3 and a second width adjusting rod 13, the first width adjusting rod 3 and the second width adjusting rod 13 are arranged in parallel, one end of the inclined hydraulic cylinder 4 is hinged on a sliding member, and the sliding member is slidably connected to the first width adjusting rod 3 and the second width adjusting rod 13.
[0036] Among them, the fertilization unit includes a fertilizer frame 12, a transmission assembly, a ground wheel 8, a fertilizer hexagonal shaft 17, a fertilizer discharger 18, a ground wheel shaft 6 and a plow assembly; the fixed end of the fertilizer frame 12 is fixed on the fertilizer machine connecting frame 5, the ground wheel shaft 6 and the fertilizer hexagonal shaft 17 are parallelly assembled on the fertilizer frame 12, one end of the transmission assembly is sleeved on one end of the ground wheel shaft 6 and the fertilizer hexagonal shaft 17, the ground wheel 8 is assembled on the other end of the ground wheel shaft 6, the plow assembly is assembled on the bottom of the fertilizer frame 12, the fertilizer discharger 18 is fixedly assembled on the fertilizer frame 12, a plurality of fertilizer boxes are arranged in the fertilizer discharger 18, and the output ends of the plurality of fertilizer boxes are arranged toward the plow assembly, and the fertilizer discharger 18 is connected to the fertilizer hexagonal shaft 17, and the transmission assembly is driven by the ground wheel 8 through the ground wheel shaft 6, and the transmission assembly drives the plurality of fertilizer boxes in the fertilizer discharger 18 to store fertilizer through the fertilizer hexagonal shaft 17.
[0037] The transmission assembly includes a driving sprocket 14 and a driven sprocket 15. The driving sprocket 14 is mounted on one end of the ground wheel shaft 6, and the driven sprocket 15 is mounted on one end of the fertilization hexagonal shaft 17. A transmission chain is arranged between the driving sprocket 14 and the driven sprocket 15.
[0038] The fertilizing unit further comprises a fertilizer box 11 , which is sleeved on the fertilizing frame 12 . A fertilizer port 20 is provided on the fertilizer box 11 , and the fertilizer port 20 is aligned with the input end of the fertilizer discharger 18 .
[0039] The fertilization unit further comprises a scraper board 10 , which is arranged at the rear of the plough assembly on the fertilization frame 12 and is used for scraping soil after plowing. A soil board adjusting screw 16 is arranged on the scraper board 10 .
[0040] The plow assembly of the present invention comprises a furrowing plow 7 and a fertilizer plow 9 .
[0041] The fertilizer spreader of the present invention is composed of four major parts with a total of 191 parts, and the parts are connected together in different ways, such as welding, bolt connection, and pin connection, to achieve the width adjustable function of the width adjustable orchard fertilizer spreader.
[0042] The function of adjusting the width in the present invention is mainly realized by two sets of width adjustment hydraulic cylinders 2, adjustment rod assemblies and inclined hydraulic cylinders 4 at the left and right ends of the front suspension main frame 1, wherein the adjustment rod assembly includes a first width adjustment rod 3 and a second width adjustment rod 13, the first width adjustment rod 3 and the second width adjustment rod 13 are arranged in parallel, forming two parallelograms. No matter how the two parallelograms move, the direction of the fertilizer application part connected behind it will never change. The main power source for driving it to adjust the width is two sets of width adjustment hydraulic cylinders 2 with a stroke of 300 mm. The telescopic movement of the width adjustment hydraulic cylinder 2 pushes the first width adjustment rod 3 and the second width adjustment rod 13 to change, thereby achieving adjustable width. The inclined hydraulic cylinder 4 with a stroke of 300 mm is mainly responsible for retracting the unfolded fertilizer application part. Another function is to enhance the structural reliability of the width adjustment part.
[0043] The working principle of a hydraulic contraction type orchard fertilizer spreader of the present invention is as follows:
[0044] The power of the orchard fertilizer spreader with adjustable width is mainly provided by the tractor, and it adopts three-point suspension. Figure 2As shown, it is in the retracted state. When working, first lower the fertilizer spreader through the three-point suspension device to let the fertilizer spreader enter the pre-working state, then open the valve of the inclined hydraulic cylinder 4 and extend the inclined hydraulic cylinder 4 to lower the fertilizer unit, then open the valves of the first width adjustment rod 3 and the second width adjustment rod 13 respectively, extend the first width adjustment rod 3 and the second width adjustment rod 13 to adjust the row width suitable for the orchard, and then manually flatten the fertilizer part and connect it with pins. The fertilizer spreader is completed. Then pour the fertilizer into the two fertilizer boxes 11 respectively. Then adjust the amount of fertilizer through the fertilizer discharger 18 adjustment device, and then adjust the scraping angle in turn through the soil plate adjustment screw 16 scraper plate 10.
[0045] Then start the tractor, and drag the fertilizer spreader by traction. The tractor traction drives the rear furrowing plow and fertilizer plow of the fertilizer spreader to go deep into the soil, and the fertilizer spreader as a whole descends, and the ground wheel 8 contacts the ground, and the ground wheel 8 contacts the ground and rotates. One end of the ground wheel shaft 6 is connected to a driving sprocket 14, and the driving sprocket 14 drives the driven sprocket 15 to rotate. The driven sprocket 15 is fixed on the hexagonal shaft 17 for fertilizer application, and the rotation of the driven sprocket 15 drives the hexagonal shaft 17 for fertilizer application to rotate. Six fertilizer boxes are arranged in the fertilizer dispensing device 18, and the six fertilizer boxes are connected to the hexagonal shaft 17 for fertilizer application. The rotation of the hexagonal shaft 17 for fertilizer application drives the six fertilizer dispensing device groove wheels to rotate, and the fertilizer is discharged from the six fertilizer dispensing device groove wheels, and the fertilizer enters the six fertilizer plows 9 along the fertilizer dispensing pipe, and then is applied to the fertilizer ditch. There is a covering device behind the fertilizer application part, and then the fertilizer ditch with fertilizer applied is covered with soil at one time. Then the fruit tree fertilization and covering work is completed.
[0046] In summary, the present invention provides a hydraulic retractable orchard fertilizer spreader, wherein fertilizer assemblies are respectively arranged at the left and right ends of the front suspension main frame, and two groups of fertilizer assemblies can fertilize multiple rows of fruit trees at one time. The two groups of fertilizer assemblies are respectively width-adjusted by width-adjusting hydraulic cylinders, and can adapt to different environments to fertilize orchard fruit trees, thereby effectively improving the fertilization efficiency. A hydraulic fixing seat is provided on the front suspension main frame, and one ends of the two groups of width-adjusting hydraulic cylinders are hingedly assembled on the hydraulic fixing seat, and the other ends of the two groups of width-adjusting hydraulic cylinders are respectively assembled on the two groups of fertilizer assemblies, so as to enhance the structural reliability of the width-adjusting part.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A hydraulic contraction type orchard fertilizer spreader, characterized in that: The invention comprises a front suspension main frame (1), two sets of width adjustment hydraulic cylinders (2) and two sets of fertilization components; the two sets of fertilization components are respectively arranged at the left and right ends of the front suspension main frame (1), wherein the two sets of fertilization components have the same structure, the front suspension main frame (1) is provided with a hydraulic fixing seat (19), one end of the two sets of width adjustment hydraulic cylinders (2) are hingedly mounted on the hydraulic fixing seat (19), the other ends of the two sets of width adjustment hydraulic cylinders (2) are respectively mounted on the two sets of fertilization components, and the two sets of fertilization components are respectively opened or merged by the two sets of width adjustment hydraulic cylinders (2); The fertilization assembly comprises an adjustment rod assembly and a fertilization unit; one end of the adjustment rod assembly is hinged on the front suspension main body frame (1), and the other end is provided with a fertilizer machine connecting frame (5); the fertilization unit is mounted on the fertilizer machine connecting frame (5); one end of the width adjustment hydraulic cylinder (2) is fixedly arranged on the adjustment rod assembly; An oblique hydraulic cylinder (4) is also provided between the adjusting rod assembly and the front suspension main frame (1); one end of the oblique hydraulic cylinder (4) is hinged to the front suspension main frame (1), and the other end is slidably connected to the adjusting rod assembly, and is used to retract or unfold the fertilizing unit along the direction of the adjusting rod assembly; The adjusting rod assembly comprises a first width adjusting rod (3) and a second width adjusting rod (13), the first width adjusting rod (3) and the second width adjusting rod (13) being arranged in parallel, one end of the inclined hydraulic cylinder (4) being hinged on a sliding member, and the sliding member being slidably connected to the first width adjusting rod (3) and the second width adjusting rod (13); The hydraulic fixing seat (19) is arranged in the middle of the front suspension main frame (1), and the two groups of fertilizing components are centered on the hydraulic fixing seat (19), and the two groups of fertilizing components are respectively expanded or merged by the two groups of hydraulic components.
2. A hydraulic contraction type orchard fertilizer spreader according to claim 1, characterized in that: The fertilizing unit comprises a fertilizing frame (12), a transmission assembly, a ground wheel (8), a fertilizing hexagonal shaft (17), a fertilizer discharger (18), a ground wheel shaft (6) and a plow assembly; the fixed end of the fertilizing frame (12) is fixed to the fertilizer machine connecting frame (5); the ground wheel shaft (6) and the fertilizing hexagonal shaft (17) are parallelly mounted on the fertilizing frame (12); one end of the transmission assembly is sleeved on one end of the ground wheel shaft (6) and the fertilizing hexagonal shaft (17); the ground wheel (8) is mounted on the ground wheel shaft (6) ), the plough assembly is mounted on the bottom of the fertilizer frame (12), the fertilizer dispenser (18) is fixedly mounted on the fertilizer frame (12), a plurality of fertilizer boxes are arranged in the fertilizer dispenser (18), and the output ends of the plurality of fertilizer boxes are arranged toward the plough assembly, and the fertilizer dispenser (18) is connected to the fertilizer hexagonal shaft (17), and the transmission assembly is driven by the ground wheel (8) through the ground wheel shaft (6), and the transmission assembly drives the plurality of fertilizer boxes in the fertilizer dispenser (18) through the fertilizer hexagonal shaft (17) to store fertilizer.
3. A hydraulic contraction type orchard fertilizer spreader according to claim 2, characterized in that: The transmission assembly comprises a driving sprocket (14) and a driven sprocket (15), wherein the driving sprocket (14) is mounted on one end of the ground wheel shaft (6), and the driven sprocket (15) is mounted on one end of the fertilizing hexagonal shaft (17), and a transmission chain is sleeved between the driving sprocket (14) and the driven sprocket (15).
4. The hydraulic contraction type orchard fertilizer spreader according to claim 2, characterized in that: The fertilizing unit further comprises a fertilizer box (11), wherein the fertilizer box (11) is mounted on the fertilizing frame (12), and a fertilizer port (20) is provided on the fertilizer box (11), wherein the fertilizer port (20) is aligned with an input end of the fertilizer discharger (18).
5. The hydraulic contraction type orchard fertilizer spreader according to claim 2, characterized in that: The fertilizing unit further comprises a scraper plate (10), which is arranged behind the plough assembly on the fertilizing frame (12) and is used for scraping soil behind the plough. A soil plate adjusting screw (16) is provided on the scraper plate (10).
6. The hydraulic contraction type orchard fertilizer spreader according to claim 2, characterized in that: The plough assembly comprises a furrowing plough (7) and a fertilizing plough (9).
Citation Information
Patent Citations
Ditching fertilizer applicator
CN108432404A
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CN207911292U
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