Agricultural planting trenching machine

Abstract

The present invention discloses an agricultural planting trenching machine, comprising a machine body, two sets of side groups integrally arranged on both sides of the machine body, a mounting box and two sets of relatively inclined trenching parts; the mounting box is fixedly installed between the side groups on both sides, an inner shaft is rotatably installed inside the mounting box, and the motors for driving the inner shaft to rotate are installed inside the side groups on both sides, and the trenching part comprises a connecting shaft 1 and a connecting shaft 2 arranged in an inclined manner and a spiral blade for trenching, the connecting shaft 1 and the connecting shaft 2 are connected end to end, the spiral blade is installed on the outside of the connecting shaft 2, and the inner shaft is used to drive the connecting shaft 1 and the connecting shaft 2 to rotate. The present invention cuts soil from uncultivated soil blocks by rotating the trenching parts on both sides, and the soil is transported from the trench to the ground and thrown on both sides of the trench, thereby completing the trenching operation, and the spiral blades can be used to reclaim different types of soil such as clay, loam or sand, and have strong adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural planting, in particular to an agricultural planting trenching machine. Background Art

[0002] Agricultural planting trenchers play a vital role in agricultural planting. Trenchers can efficiently and quickly dig trenches of the required depth and width in paddy fields, dry land and other environments, greatly improving the efficiency of trenching in agricultural production. The traditional manual trenching method is time-consuming and labor-intensive, while trenchers significantly reduce the labor intensity of farmers and save human resources through mechanized operations. Agricultural planting trenchers play an important role in improving agricultural production efficiency, improving farmland environment, promoting the development of agricultural mechanization, and adapting to various agricultural needs.

[0003] However, there are still some difficult-to-overcome problems in the use of trenchers, especially in harsh working environments, such as muddy and humid environments. In muddy or humid soils, the viscosity and humidity of the soil increase, resulting in increased resistance encountered by the trencher blades or excavation components when moving in the soil, which affects the performance of the trencher and reduces its working efficiency. Wet and muddy environments can easily lead to increased wear of machine parts. For example, blades, chains, bearings and other components are more susceptible to corrosion and wear in humid environments, which not only shortens the service life of the machine, but may also affect the quality of the operation. Operating a trencher in a muddy and humid environment requires higher skills and experience, which increases the difficulty of operation. Summary of the invention

[0004] The purpose of the present invention is to provide an agricultural planting trenching machine to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an agricultural planting trenching machine, comprising a machine body, two sets of side groups integrally arranged on both sides of the machine body, a mounting box and two sets of relatively inclined trenching parts;

[0006] The installation box is fixedly installed between the side groups on both sides, and an inner shaft is rotatably installed inside the installation box. Motors for driving the inner shaft to rotate are installed inside the side groups on both sides. The ditching part includes an inclined connecting shaft 1, a connecting shaft 2 and a spiral blade for ditching. The connecting shaft 1 and the connecting shaft 2 are connected end to end, and the spiral blade is installed on the outside of the connecting shaft 2. The inner shaft is used to drive the connecting shaft 1 and the connecting shaft 2 to rotate.

[0007] Furthermore, a bevel gear 1 is fixedly sleeved on the outer wall of the inner shaft, a bevel gear 2 is fixedly sleeved on the connecting shaft 1, and the bevel gear 1 and the bevel gear 2 are meshed;

[0008] The installation box is provided in two halves, and the two halves of the installation box can be separated for installing and removing the ditching part.

[0009] Furthermore, the interior of the installation box is integrally formed with an inclined block that is tilted, and the inclined block abuts against the inclined upper end of the connecting shaft. An inclined cavity is also provided in the installation box, and the inclined upper end of the connecting shaft and the bevel gear are embedded in the inclined cavity to limit the connecting shaft and the bevel gear.

[0010] Furthermore, the inclined block is obliquely penetrated by an oblique hole, the oblique lower end of the oblique block is provided with a circular recess, a sealing ring is embedded in the circular recess, the axis of the circular recess coincides with the axis of the oblique hole, the oblique upper end of the connecting shaft 1 abuts against the sealing ring, the interiors of the connecting shaft 1 and the connecting shaft 2 are connected, a spiral seam extending in a spiral shape is provided on the outer wall of the connecting shaft 2, the outer end of the oblique hole is used to connect with a water pipe, and the spiral seam is used to throw water from the inside to the outside to wet the soil;

[0011] The lower end of the connecting shaft 2 is threadedly connected with a fastening bolt, and the fastening bolt is used to seal the lower end of the connecting shaft 2.

[0012] Furthermore, an inner connecting tube extending along the axis of connecting shaft one is fixed to the oblique lower end of the connecting shaft one, the outer wall of the inner connecting tube is concave and convex, the inner connecting tube extends into the connecting shaft two, and the outer wall of the inner connecting tube is in contact with the inner wall of the connecting shaft two, a support spring is sleeved on the outer wall of the inner connecting tube, and the support spring is fixed between connecting shaft one and connecting shaft two. The spiral blade is subjected to a blocking force and can move downward or upward along its axis.

[0013] Furthermore, an outer sleeve is provided on the outer side of the support spring. The outer sleeve is made of rubber material, and two ends of the outer sleeve are respectively bonded to the first connecting shaft and the second connecting shaft.

[0014] Furthermore, the outer side of the connecting shaft 1 is provided with a plurality of outer extension rods extending along its axis, the plurality of outer extension rods are distributed in a circumference, and the outer sides of the plurality of outer extension rods are all fixed with fan-shaped pieces arranged perpendicularly to the outer extension rods;

[0015] The spiral blade is provided with a fan-shaped opening extending along the axis of the spiral blade, the outer extension rod passes through the fan-shaped opening, and the fan-shaped piece cooperates with the fan-shaped opening. When the spiral blade is subjected to a blocking force, the fan-shaped piece and the fan-shaped opening are misaligned to separate the adhered soil.

[0016] Furthermore, the outer wall of the spiral blade is smoothly arranged and is a thin sheet of metal material.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] 1. The trenching parts on both sides rotate to cut the soil from the uncultivated soil blocks. The soil is transported from the trench to the ground and thrown on both sides of the trench to complete the trenching operation. The spiral blades can cultivate different types of soil such as clay, loam or sand, and have strong adaptability.

[0019] 2. When the spiral edge of the spiral blade touches the stone, the stone is directly thrown out. Secondly, when the edge of the spiral blade touches the stone, the connecting shaft 2 can be extended and retracted, which causes a local offset between the spiral blade and the stone, avoiding direct impact on the stone, reducing damage to the spiral blade, and minimizing wear of the spiral blade.

[0020] 3. When trenching, the compactness of the soil encountered varies to a certain extent. The speed of the trencher's movement changes the amount of soil cut, which changes the cutting efficiency of the spiral blade and the amount of soil transferred, changes the tension on the connecting shaft 2, and causes the connecting shaft 2 to expand and contract along the inner connecting pipe. The fan-shaped mouth and the fan-shaped piece are dislocated, which can remove the soil stuck on the spiral blade and improve the trenching efficiency.

[0021] 4. Water can flow through the spiral seams to wet most of the soil, making the wetting more uniform. The spilled soil is relatively loose and moist, making it easier for crops to survive when planted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the installation box of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection position structure of the inner shaft and the groove opening part of the present invention;

[0026] Figure 4 It is a schematic diagram of the local structure of the installation box of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection position structure of the connecting shaft 1 and the connecting shaft 2 of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the outer protective sleeve of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the outer extension rod and the fan-shaped piece of the present invention;

[0030] Figure 8 It is a schematic diagram of the spiral blade structure of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the second lower end of the connecting shaft of the present invention.

[0032] In the figure: 1, machine body; 2, side group; 3, mounting box; 31, oblique block; 32, oblique cavity; 33, oblique hole; 34, circular notch; 35, sealing ring; 4, inner shaft; 41, bevel gear one; 5, groove opening; 51 bevel gear two; 52, connecting shaft one; 521, outer protective sleeve; 522, inner connecting pipe; 523, supporting spring; 524, outer extension rod; 525, fan-shaped piece; 53, connecting shaft two; 531, spiral seam; 532, fastening bolt; 54, spiral blade; 541, fan-shaped mouth. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 9 The present invention provides a technical solution: the trencher can efficiently dig narrow and deep trenches, which facilitates the laying of irrigation and drainage pipes in farmland. This helps to improve the water conservancy conditions of farmland and increase the yield and quality of crops. In farmland environments such as orchards and vegetable gardens, trenchers can be used for trenching, fertilization and drainage. By precisely controlling the depth and width of the trench, it ensures that fertilizer and water can be evenly distributed, promoting crop growth. Therefore, trenchers play an extremely important role in agriculture. Figure 1 and Figure 2 An agricultural planting trenching machine is shown, comprising a machine body 1, two sets of side groups 2 integrally arranged on both sides of the machine body 1, a mounting box 3 and two sets of relatively inclined trenching parts 5;

[0035] The mounting box 3 is fixedly installed between the side groups 2 on both sides, and an inner shaft 4 is rotatably installed inside the mounting box 3. Motors for driving the inner shaft 4 to rotate are installed inside the side groups 2 on both sides. The trenching part 5 includes an inclined connecting shaft 1 52, a connecting shaft 2 53 and a spiral blade 54 for trenching. The connecting shaft 1 52 and the connecting shaft 2 53 are connected end to end, and the spiral blade 54 is installed on the outside of the connecting shaft 2 53. The inner shaft 4 is used to drive the connecting shaft 1 52 and the connecting shaft 2 53 to rotate. It is also extremely important that the trenching machine adopts the spiral blade 54. The spiral blade 54 cuts the soil and transports it to the specified position through rotation. The rotation and propulsion of the spiral blade 54 causes the soil to be cut and move along a specific direction, thereby forming the required groove.

[0036] like Figure 3 and Figure 4 As shown, a bevel gear 1 41 is fixedly sleeved on the outer wall of the inner shaft 4, and a bevel gear 2 51 is fixedly sleeved on the connecting shaft 1 52. The bevel gear 1 41 and the bevel gear 2 51 are meshed. The bevel gear 1 41 and the bevel gear 2 51 are meshed, so that the rotation direction is changed, so that the inner shaft 4 can control the inclined ditching part 5 to rotate, and the ditching part 5 realizes the transportation of soil outwards;

[0037] The installation box 3 is provided in two halves, and the two halves of the installation box 3 can be separated for installing and removing the ditching part 5. The ditching part 5 can be removed for cleaning or maintenance.

[0038] like Figure 4 As shown, in order to limit the ditching portion 5 and enable the ditching portion 5 to rotate, an inclined oblique block 31 is integrally formed inside the installation box 3, and the oblique block 31 abuts against the oblique upper end of the connecting shaft 1 52. When the ditching portion 5 is squeezed downward, it can abut against the oblique block 31 to prevent the position from moving. An oblique cavity 32 is also provided in the installation box 3, and the oblique upper end of the connecting shaft 1 52 and the bevel gear 2 51 are embedded in the oblique cavity 32, which is used to limit the connecting shaft 1 52 and the bevel gear 2 51. The function is to further limit the ditching portion 5 so that it can only rotate and maintain stability during the ditching process. The opening and closing of the other two halves of the installation box 3 can limit the connecting shaft 1 52 and the bevel gear 2 51, so that the connecting shaft 1 52 and the bevel gear 2 51 can be quickly taken out or installed.

[0039] like Figure 4 and Figure 8As shown, during the trenching process, the soil is relatively dry. When planting is carried out later, the soil needs to be wetted. However, wetting can generally only wet the surface soil, and it is difficult to wet the deep soil. The surface soil needs to be irrigated thoroughly. However, when the trenching is completed, the transported soil is relatively loose, and it is easy to cause water and soil loss during irrigation, resulting in the fertility of the soil being affected. The inclined block 31 is obliquely penetrated by an oblique hole 33, and a circular recess 34 is provided at the oblique lower end of the oblique block 31. A sealing ring 35 is embedded in the circular recess 34, and the axis of the circular recess 34 coincides with the axis of the oblique hole 33. The oblique upper end of the connecting shaft 52 is against the sealing ring 35, so that the connecting shaft 52 is relatively sealed during the rotation process to ensure water inlet. The pipe that enters the connecting shaft 1 52 and is connected to the inclined hole 33 is connected to the water pump, and can transmit water to the inclined hole 33 and enter the connecting shaft 1 52 and the connecting shaft 2 53. The interiors of the connecting shaft 1 52 and the connecting shaft 2 53 are connected. A spiral slit 531 extending in a spiral shape is provided on the outer wall of the connecting shaft 2 53. The outer end of the inclined hole 33 is used to connect with the water pipe. The spiral slit 531 is used to throw water from the inside to the outside to wet the soil. During the rotation of the spiral blade 54, the spiral blade 54 transmits and breaks up the soil. The water moves out from the spiral slit 531 and contacts the broken up soil, relatively wetting all the moving soil to make the moisture level uniform. In addition, the excess water will be retained in the groove to avoid water and soil loss.

[0040] like Fig. 9 As shown, the lower end of the connecting shaft 53 is threadedly connected with a fastening bolt 532, and the fastening bolt 532 is used to seal the lower end of the connecting shaft 53. If soil enters the spiral seam 531 or the spiral seam 531 is blocked, the fastening bolt 532 needs to be opened to clean the inside of the connecting shaft 53.

[0041] like Figure 5 and Figure 6As shown, in order to realize the telescopic effect between the connecting shaft 1 52 and the connecting shaft 2 53, and to clean the soil adhered to the spiral blade 54 to improve efficiency, the oblique lower end of the connecting shaft 1 52 is fixed with an inner connecting pipe 522 extending along the axis of the connecting shaft 1 52, and the outer wall of the inner connecting pipe 522 is concave and convex. The inner connecting pipe 522 extends into the connecting shaft 2 53, and the outer wall of the inner connecting pipe 522 fits with the inner wall of the connecting shaft 2 53 to realize the telescopic effect between the connecting shaft 1 52 and the connecting shaft 2 53. A supporting spring 52 is sleeved on the outer wall of the inner connecting pipe 522 3. The support spring 523 is fixed between the connecting shaft 1 52 and the connecting shaft 2 53. The support spring 523 is used to reset the connecting shaft 2 53 and ensure that the connecting shaft 2 53 can perform telescopic movement. The spiral blade 54 is subjected to a blocking force and can move downward or upward along its axis. When the resistance of the spiral blade 54 changes, the amount of soil transmitted increases or decreases, so that the spiral blade 54 can be telescopically changed along the inner connecting tube 522. In addition, the different compactness of the soil at different positions and the speed of the horizontal movement of the trencher all affect the blocking force of the spiral blade 54.

[0042] like Figure 6 As shown, in order to prevent soil or stones from getting stuck on the support spring 523 and causing difficulty in extension and retraction, an outer sleeve 521 is provided on the outer side of the support spring 523. The outer sleeve 521 is made of rubber, and its two ends are respectively bonded to the connecting shaft 1 52 and the connecting shaft 2 53 to achieve a protective effect.

[0043] like Figure 7 and Figure 8 As shown, the outer side of the connecting shaft 1 52 is provided with a plurality of outer extension rods 524 extending along its axis, the plurality of outer extension rods 524 are distributed in a circumference, and the outer sides of the plurality of outer extension rods 524 are all fixed with fan-shaped pieces 525 arranged perpendicularly to the outer extension rods 524;

[0044] The spiral blade 54 is provided with a fan-shaped opening 541 extending along the axis of the spiral blade 54, the outer extension rod 524 passes through the fan-shaped opening 541, and the fan-shaped piece 525 cooperates with the fan-shaped opening 541. When the spiral blade 54 is subjected to a blocking force, the fan-shaped piece 525 and the fan-shaped opening 541 are dislocated to separate the adhered soil. The position of the fan-shaped piece 525 does not move, and the spiral blade 54 moves in the up and down directions, so that the fan-shaped piece 525 moves in the fan-shaped opening 541, resulting in dislocation, which has a stirring effect on the adhered soil and cleans the adhered soil.

[0045] The outer wall of the spiral blade 54 is smoothly set, and it is a thin sheet of metal material. The smooth outer wall can significantly reduce the friction resistance between the soil and the spiral blade 54. The smooth outer wall can reduce the adhesion of the soil, allowing the soil to be transported and thrown along the spiral blade 54 more smoothly, thereby improving the clarity of the trenching and the cleanliness of the trench. At the same time, metal materials usually have higher strength and rigidity, and can withstand greater cutting forces and conveying loads.

[0046] The working principle of the present invention is as follows: the motors on both sides drive the inner shaft 4 to rotate, the motors on both sides are set at the same frequency or the motor on one side is running, and the other side is powered off. When the inner shaft 4 rotates, the connecting shaft 1 52 matched by the bevel gear 1 41 and the bevel gear 2 51 also rotates, and the connecting shaft 2 53 matched by the inner connecting pipe 522 also rotates. When ditching, the ditching parts 5 on both sides rotate, which will produce shearing, extrusion, crushing and other effects on the soil, cutting the soil from the uncultivated soil block, and the centrifugal force of the spiral blade 54 causes the soil just cut to be thrown to the ditch wall. Due to the obstruction of the ditch wall and the push of the spiral blade 54, the soil is transported from the ditch to the ground and thrown on both sides of the ditch, thereby completing the ditching operation. The ditching machine can complete the ditching operation quickly and efficiently, especially in the occasions where continuous and long-distance ditching is required. Among them, the spiral blade 54 can be used to cultivate different types of soil such as clay, loam or sand, and has strong adaptability.

[0047] In addition, when trenching, the contact between the stone and the spiral blade 54 will cause the blade surface to wear. When the spiral edge of the moving spiral blade 54 contacts the stone, there are two possibilities: one is that the spiral blade 54 can directly throw the stone out, and the other is that the spiral blade 54 contacts the stone that is difficult to remove. When the edge of the spiral blade 54 contacts the stone, the connecting shaft 2 53 can be extended and retracted, so that the spiral blade 54 and the stone are partially offset, that is, the spiral blade 54 slides along the stone to avoid directly hitting the stone, reduce the damage of the spiral blade 54, and reduce the wear of the spiral blade 54 as much as possible.

[0048] When trenching, the compactness of the soil encountered is different to a certain extent. The compactness of the soil at different positions is locally different. When trenching, the speed of the trencher movement changes the amount of soil cutting, which changes the cutting efficiency of the spiral blade 54 and the amount of soil transmitted. Based on this, the connecting shaft 53 is subjected to a tensile force that changes, causing the connecting shaft 53 to extend and retract along the inner connecting tube 522, causing the fan-shaped mouth 541 and the fan-shaped piece 525 to be misaligned, which can remove the soil stuck on the spiral blade 54 and improve the trenching efficiency. The support spring 523 supports the connecting shaft 53 to ensure the misalignment of the fan-shaped mouth 541 and the fan-shaped piece 525.

[0049] There is a spiral slot 531 on the connecting shaft 53, and water can flow through the spiral slot 531. During the trenching process, the spiral blades 54 will shear, squeeze, and crush the soil to disperse the soil. Sprinkling water during this process can wet most of the soil, and the wetting degree is more uniform. The sprinkled soil is relatively loose and moist, which can make crops easier to survive when planted.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An agricultural planting trenching machine, characterized in that: It comprises a machine body (1), two sets of side groups (2) integrally arranged on both sides of the machine body (1), a mounting box (3), and two sets of relatively inclined groove portions (5); The installation box (3) is fixedly installed between the side groups (2) on both sides, an inner shaft (4) is rotatably installed inside the installation box (3), and a motor for driving the inner shaft (4) to rotate is installed inside the side groups (2) on both sides, the groove opening part (5) comprises an inclined connecting shaft 1 (52), a connecting shaft 2 (53) and a spiral blade (54) for groove opening, the connecting shaft 1 (52) and the connecting shaft 2 (53) are connected end to end, the spiral blade (54) is installed on the outside of the connecting shaft 2 (53), and the inner shaft (4) is used to drive the connecting shaft 1 (52) and the connecting shaft 2 (53) to rotate; The installation box (3) is integrally formed with an inclined block (31) arranged obliquely, the inclined block (31) is obliquely penetrated by an inclined hole (33), the outer wall of the second connecting shaft (53) is provided with a spiral slit (531) extending in a spiral shape, the outer end of the inclined hole (33) is used to be connected to a water pipe, and the spiral slit (531) is used to throw water out from the inside to the outside to wet the soil; An inner connecting tube (522) extending along the axis of the first connecting shaft (52) is fixed at the oblique lower end of the first connecting shaft (52); the outer wall of the inner connecting tube (522) is arranged in a concave-convex manner; the inner connecting tube (522) extends into the second connecting shaft (53); the outer wall of the inner connecting tube (522) is in contact with the inner wall of the second connecting shaft (53); a supporting spring (523) is sleeved on the outer wall of the inner connecting tube (522); the supporting spring (523) is fixed between the first connecting shaft (52) and the second connecting shaft (53); the spiral blade (54) is subjected to a blocking force and can move downward or upward along its axis; The outer side of the connecting shaft (52) is provided with a plurality of outer extension rods (524) extending along the axis thereof, the plurality of outer extension rods (524) are distributed in a circumference, and the outer sides of the plurality of outer extension rods (524) are all fixed with fan-shaped pieces (525) arranged perpendicularly to the outer extension rods (524); The spiral blade (54) is provided with a fan-shaped opening (541) extending along the axis of the spiral blade (54), the outer extension rod (524) passes through the fan-shaped opening (541), and the fan-shaped piece (525) cooperates with the fan-shaped opening (541). When the spiral blade (54) is subjected to a blocking force, the fan-shaped piece (525) and the fan-shaped opening (541) are dislocated to separate the adhered soil.

2. The agricultural planting trenching machine according to claim 1, characterized in that: A bevel gear 1 (41) is fixedly sleeved on the outer wall of the inner shaft (4), a bevel gear 2 (51) is fixedly sleeved on the connecting shaft 1 (52), and the bevel gear 1 (41) and the bevel gear 2 (51) are meshed; The installation box (3) is arranged in two halves, and the two halves of the installation box (3) can be separated for installing and removing the groove opening portion (5).

3. The agricultural planting trenching machine according to claim 2, characterized in that: The inclined block (31) abuts against the inclined upper end of the connecting shaft (52), and an inclined cavity (32) is further provided in the installation box (3). The inclined upper end of the connecting shaft (52) and the bevel gear (51) are embedded in the inclined cavity (32) to limit the connecting shaft (52) and the bevel gear (51).

4. The agricultural planting trenching machine according to claim 3, characterized in that: A circular recess (34) is formed at the oblique lower end of the oblique block (31), a sealing ring (35) is embedded in the circular recess (34), the axis of the circular recess (34) coincides with the axis of the oblique hole (33), the oblique upper end of the first connecting shaft (52) abuts against the sealing ring (35), and the first connecting shaft (52) and the second connecting shaft (53) are connected to each other; The lower end of the second connecting shaft (53) is threadedly connected with a fastening bolt (532), and the fastening bolt (532) is used to seal the lower end of the second connecting shaft (53).

5. The agricultural planting trenching machine according to claim 1, characterized in that: An outer sleeve (521) is provided on the outer side of the support spring (523); the outer sleeve (521) is made of rubber material, and two ends of the outer sleeve are respectively bonded to the first connecting shaft (52) and the second connecting shaft (53).

6. The agricultural planting trenching machine according to claim 1, characterized in that: The outer wall of the spiral blade (54) is smoothly arranged and is a thin sheet made of metal material.

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