A depth-adjustable multifunctional soil ploughing device

Abstract

The application discloses a multifunctional soil ploughing device with adjustable depth, which comprises a frame, two horizontal rods arranged in parallel on the frame, and a hanging mechanism arranged on one side of the frame; a plurality of ploughing units capable of adjusting ploughing depth according to soil conditions are arranged on the horizontal rods at intervals; and the ploughing units on the two horizontal rods are arranged alternately. The plurality of ploughing units arranged at intervals on the two horizontal rods can automatically adjust the insertion depth and angle of the tines according to different soil conditions (such as greater forward resistance when encountering hardened soil, the need to turn out stones when encountering stones, the need for the tines to pass over hard obstacles when encountering hard obstacles, and the like), so that the ploughing quality is improved and the wear rate of the tines is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil ploughing, in particular to a multifunctional soil ploughing device with adjustable depth. BACKGROUND

[0002] The ploughing device is a mechanical device for ploughing soil, which can turn over the soil to make it loose and conducive to the growth of crops after sowing. The ploughing device usually consists of one or more rotating blades and can be pulled or self-driven forward.

[0003] As is known, the greater the soil compactness means the tighter the combination between soil particles, and the higher the soil hardness. For example, when ploughing the soil that is hard and compact, the ploughing device needs to overcome greater resistance to move smoothly. When the power of the ploughing device is constant, the soil with too high hardness will limit the ploughing depth because the device is difficult to push the ploughing tines to penetrate into the soil deeper. The soil with lower hardness has a relatively loose structure, and the ploughing components can be more easily inserted into the soil layer deeper, so that a greater ploughing depth can be achieved under the same device power and working conditions. Due to the different hardness of the soil, two situations will occur during ploughing: the ploughing is not deep enough when the soil hardness is high; and the ploughing is too deep when the soil is loose. Therefore, when the soil hardness is high, the ploughing device needs to have a deeper ploughing depth to make the soil deeper effectively turned over; and when the soil hardness is lower (the soil is loose), the ploughing depth is smaller to prevent the soil from being looser on the basis of being loose.

[0004] However, the length of the tines of some ploughing devices in the prior art is generally fixed, which cannot be adjusted in real time according to the actual situation existing in the soil to improve the quality of ploughing.

[0005] Therefore, a multifunctional soil ploughing device with adjustable depth is proposed. SUMMARY

[0006] The present application provides a multifunctional soil ploughing device with adjustable depth to solve the above technical problems.

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

[0008] A multifunctional soil ploughing device with adjustable depth, comprising a frame and two horizontal rods arranged in parallel and spaced apart on the frame, and a mounting mechanism arranged on one side of the frame; a plurality of ploughing units for adjusting the ploughing depth according to the soil condition are arranged at intervals on any of the horizontal rods, and the plurality of ploughing units on the two horizontal rods are arranged alternately.

[0009] Further, in the present application, any of the above-mentioned ploughing units comprises a rake head hinged to the corresponding above-mentioned horizontal rod, a first arc-shaped rake tooth hinged to the above-mentioned rake head, a second arc-shaped rake tooth slidingly connected to the above-mentioned first arc-shaped rake tooth, and a pushing mechanism arranged on the above-mentioned first arc-shaped rake tooth, the above-mentioned pushing mechanism being connected to the above-mentioned second arc-shaped rake tooth; the above-mentioned rake head is in T-shaped structure, the above-mentioned rake head comprising a rod body and a top end and a bottom end arranged at one end of the above-mentioned rod body, the free end of the above-mentioned rod body being hinged to the corresponding above-mentioned horizontal rod, one end of the above-mentioned first arc-shaped rake tooth being hinged to the above-mentioned bottom end; the above-mentioned rake head is further provided with a retaining mechanism.

[0010] Further, in the present application, the above-mentioned retaining mechanism comprises a first elastic telescopic rod hinged to the above-mentioned top end and a second elastic telescopic rod hinged to the above-mentioned rod body, one end of the above-mentioned first elastic telescopic rod away from the above-mentioned top end being hinged to the corresponding above-mentioned horizontal rod; one end of the above-mentioned second elastic telescopic rod away from the above-mentioned rod body being hinged to the above-mentioned first arc-shaped rake tooth, and the distance between the hinging point and the above-mentioned bottom end being less than the length of the above-mentioned first arc-shaped rake tooth.

[0011] Further, in the present application, the above-mentioned pushing mechanism comprises a first connecting rod hinged to the above-mentioned first arc-shaped rake tooth, a second connecting rod hingedly arranged at the free end of the above-mentioned first connecting rod, and a spring arranged on the above-mentioned second connecting rod, one end of the above-mentioned second connecting rod away from the above-mentioned first connecting rod being hinged to the above-mentioned second arc-shaped rake tooth; one end of the above-mentioned spring away from the above-mentioned second connecting rod being connected to the above-mentioned second arc-shaped rake tooth.

[0012] Further, in the present application, an arc-shaped sliding groove adapted to the above-mentioned second arc-shaped rake tooth is formed on the above-mentioned first arc-shaped rake tooth, and the above-mentioned second arc-shaped rake tooth is slidingly arranged in the above-mentioned arc-shaped sliding groove; a nutrient agent delivery mechanism is arranged on the above-mentioned frame, the above-mentioned nutrient agent delivery mechanism comprising a liquid storage tank and a liquid delivery pipe, one end of the above-mentioned liquid delivery pipe being in communication with the above-mentioned liquid storage tank, and the other end being in communication with the above-mentioned arc-shaped sliding groove.

[0013] Further, in the present application, a flow channel is formed in the above-mentioned first arc-shaped rake tooth, one end of the above-mentioned flow channel being in communication with the above-mentioned liquid delivery pipe, and the other end being in communication with the above-mentioned arc-shaped sliding groove; a piston adapted to the above-mentioned flow channel is arranged at one end of the above-mentioned second arc-shaped rake tooth close to the above-mentioned flow channel, and the above-mentioned piston is slidingly connected to the above-mentioned flow channel.

[0014] Further, in the present application, a permanent magnet is arranged at one end of the above-mentioned first arc-shaped rake tooth close to the above-mentioned arc-shaped sliding groove, and the end of the above-mentioned second arc-shaped rake tooth close to the above-mentioned flow channel is made of ferromagnetic material.

[0015] Further, in the present application, a soil clod breaking mechanism is arranged on the side of the above-mentioned frame opposite to the above-mentioned mounting mechanism.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The utility model discloses a depth adjustable multifunctional soil ploughing equipment, a plurality of ploughing units are installed on two horizontal poles respectively and interval, can automatically adjust the insertion depth and the angle of occurrence of harrow tooth according to the different situation in the soil (such as when the soil hardening, the forward resistance is bigger, when the stone needs to be ploughed out, when the hard obstacle needs to be crossed by the harrow tooth etc.), to improve the ploughing quality and reduce the wear rate of harrow tooth. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the state schematic diagram of the soil ploughing equipment of the utility model when working;

[0019] Figure 2 It is the top view of Figure 1 ;

[0020] Figure 3 It is the structure schematic diagram of the soil ploughing equipment of the utility model;

[0021] Figure 4 It is the structure schematic diagram of the soil ploughing equipment of the utility model; Figure 3 It is the partial close-up of A in

[0022] Figure 5 It is the structure schematic diagram of the ploughing unit of the utility model;

[0023] Figure 6 It is the sectional view of B in Figure 5 ;

[0024] Figure 7 It is the state schematic diagram of the ploughing unit of the utility model when working;

[0025] Figure 8 It is the state schematic diagram of the ploughing unit of the utility model when working;

[0026] Figure 9 It is the state schematic diagram of the ploughing unit of the utility model when working.

[0027] In the drawing: 1011-frame;1012-horizontal pole;201-hanging mechanism;301-ploughing unit;3011-rake head;3012-first arc-shaped harrow tooth;3013-second arc-shaped harrow tooth;4011-first elastic telescopic rod;4012-second elastic telescopic rod;5011-first connecting rod;5012-second connecting rod;5013-spring;6011-liquid storage tank;6012-liquid delivery pipe;7011-flow channel;8011-piston;9011-permanent magnet;10011-soil clod breaking mechanism;11011-tractor;12011-soil;13011-hard obstacle. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0029] Example

[0030] like Figures 1-9 The illustrated multi-functional soil tillage device with adjustable depth includes a frame 1011 and two parallel crossbars 1012 spaced apart on the frame 1011. A mounting mechanism 201 is provided on one side of the frame 1011. Several tillage units 301, which can adjust the tillage depth according to the soil conditions 1011, are spaced apart on any crossbar 1012, and the tillage units 301 on the two crossbars 1012 are staggered. Simultaneously, a soil clod breaking mechanism 10011 is provided on the side of the frame 1011 opposite to the mounting mechanism 201.

[0031] When using this tillage equipment to till the soil 12011, its mounting mechanism 201 is connected to the rear end of the tractor 11011. The tractor 11011 then pulls the equipment forward for overall movement. During tillage, the harrow tooth structure, consisting of the first arc-shaped harrow tooth 3012 and the second arc-shaped harrow tooth 3013, extends into the soil 12011 and moves along the direction of movement of the tractor 11011 to till the soil 12011. Simultaneously, the soil clod breaking mechanism 10011 installed at the rear end of the tillage equipment works in sync, breaking up and finer the large clods of soil turned out by the preceding tillage equipment. The soil clod breaking mechanism 10011 is prior art, and its structure is based on... Figures 1-3 I won't go into too much detail here.

[0032] Specifically, in this embodiment, any tillage unit 301 includes a harrow head 3011 hinged to the corresponding crossbar 1012, a first arc-shaped harrow tooth 3012 hinged to the harrow head 3011, and a second arc-shaped harrow tooth 3013 slidably connected to the first arc-shaped harrow tooth 3012; the harrow head 3011 has a T-shaped structure, and the harrow head 3011 includes a rod body and a top end and a bottom end disposed at one end of the rod body, the free end of the rod body is hinged to the corresponding crossbar 1012, and one end of the first arc-shaped harrow tooth 3012 is hinged to the bottom end; a holding mechanism is also provided on the harrow head 3011.

[0033] In this embodiment, the retaining mechanism includes a first elastic telescopic rod 4011 hinged to the top end and a second elastic telescopic rod 4012 hinged to the rod body. The end of the first elastic telescopic rod 4011 away from the top end is hinged to the corresponding crossbar 1012; the end of the second elastic telescopic rod 4012 away from the rod body is hinged to the first arc-shaped rake tooth 3012, and the distance between this hinge point and the bottom end is less than the length of the first arc-shaped rake tooth 3012.

[0034] ReferenceFigure 1 When the soil density of 12011 is low, that is, when the soil 12011 is relatively loose, the resistance to the movement of the harrow tooth structure within the soil 12011 is small, and the tillage unit 301 maintains a fixed tillage depth. When the soil 12011 to be tilled is compacted (when the soil 12011 is compacted, its density is high), that is, when the soil 12011 is relatively dense, the resistance to the movement of the harrow tooth structure composed of the first arc-shaped harrow tooth 3012 and the second arc-shaped harrow tooth 3013 within the soil 12011 is large. Figure 5 From the perspective of the soil, under the resistance of the soil 12011, the first arc-shaped rake tooth 3012 rotates clockwise around its hinge point with the rake head 3011, during which the second elastic telescopic rod 4012 extends. During this process, the ends of the first arc-shaped rake tooth 3012 and the second arc-shaped rake tooth 3013 penetrate deeper into the soil 12011, thus turning over the deeper soil 12011.

[0035] When the harrow tooth structure composed of the first arc-shaped harrow tooth 3012 and the second arc-shaped harrow tooth 3013 encounters a hard obstacle 13011 (such as a stone) during tillage, there are three situations: In the first situation, the end of the second arc-shaped harrow tooth 3013 away from the first arc-shaped harrow tooth 3012 is located in the upper part of the hard obstacle 13011 (such as a stone). Figure 7 (as shown); In the second case, the end of the second arc-shaped rake tooth 3013 that is away from the first arc-shaped rake tooth 3012 is located in the lower half of the rigid obstacle 13011 (as shown). Figure 8 (As shown); In the third case, the hard obstacle 13011 is deeply rooted in the soil 12011 and cannot be moved by the first arc-shaped rake tooth 3012 or the second arc-shaped rake tooth 3013 (as shown). Figure 9 (As shown).

[0036] Reference Figure 7 When the end of the second arc-shaped harrow tooth 3013 is located on the upper part of a hard obstacle 13011 (such as a stone), in the prior art, a flat pushing method is generally used, even if the harrow head 3011 (the tillage unit 301 in this embodiment) is movable. Since the harrow head 3011 has multiple points of fulcrum, under its own weight, it still tends to push flat, and the force point of the hard obstacle 13011 is on its upper part, easily pushing the hard obstacle 13011 deeper into the ground, making it difficult to turn it over. This results in crops being affected by the hard obstacle 13011 during growth, making it difficult to fully absorb nutrients from the soil 12011. However, in this device, from... Figure 7from the perspective of the first arc-shaped tines 3012 and the second arc-shaped tines 3013, the tine structure has a fixed rotation point (the hinge point of the first arc-shaped tine 3012 and the tine head 3011), when the plowing unit 301 is driven by the tractor 11011 to move to the right, and encounters the resistance of the hard obstacle 13011, the front row of tines near the mounting mechanism 201 rotate clockwise around the hinge point, which will turn the hard obstacle 13011 upward (the hard obstacle 13011 also rotates clockwise under the action of the tines), so that the distance between the end of the rear row of tine heads 3011 and the bottom end of the hard obstacle 13011 is shortened, and the repeated action of the rear row of tine heads 3011 helps to bring out the hard obstacle 13011.

[0037] Referring to Figure 8 When the end of the second arc-shaped tine 3013 is located at the lower half of the hard obstacle 13011, due to the arc-shaped design of the first arc-shaped tine 3012 and the second arc-shaped tine 3013, it is easier to bring out the hard obstacle 13011. It should be noted that due to the staggered arrangement of the front and rear rows of several plowing units 301, and the influence of the shape of the hard obstacle 13011 and the geological conditions of the soil 12011, the hard obstacle 13011 will gradually become unbalanced, causing the hard obstacle 13011 to move to both sides of the tine head 3011 and gradually contact the rear row of plowing units 301, so that the hard obstacle 13011 gradually separates from the soil 12011 during plowing, and is thus turned out.

[0038] Referring to Figure 9 When the hard obstacle 13011 cannot be pushed out by the tines, the prior art often uses a flat pushing method, although the tine head 3011 has high hardness and can crush the hard obstacle 13011, but it is also easy to cause wear of the tines, and at the same time, the tractor 11011 needs to provide more power to overcome the resistance of the hard obstacle 13011, thereby increasing energy consumption. In the present device, from the perspective of the first arc-shaped tine 3012 and the second arc-shaped tine 3013, the tine structure has a fixed rotation point (the hinge point of the first arc-shaped tine 3012 and the tine head 3011), when the plowing unit 301 is driven by the tractor 11011 to move to the right, and encounters the resistance of the hard obstacle 13011, the front row of tines near the mounting mechanism 201 rotate clockwise around the hinge point, which will turn the hard obstacle 13011 upward (the hard obstacle 13011 also rotates clockwise under the action of the tines), so that the distance between the end of the rear row of tine heads 3011 and the bottom end of the hard obstacle 13011 is shortened, and the repeated action of the rear row of tine heads 3011 helps to bring out the hard obstacle 13011. Figure 9When the hard obstacle 13011 cannot be pushed out, if the height of the hard obstacle 13011 above the end of the second arc-shaped harrow tooth 3013 is low at this time, the harrow tooth structure composed of the first arc-shaped harrow tooth 3012 and the second arc-shaped harrow tooth 3013 contacts the hard obstacle 13011, and the first arc-shaped harrow tooth 3012 rotates clockwise by a certain angle with the hinge point of the first arc-shaped harrow tooth 3012 and the harrow head 3011 as the center to pass over the hard obstacle 13011. It should be noted that the extension and contraction amounts of the first elastic extension rod 4011 and the second elastic extension rod 4012 do not change or change little in this process, and only the harrow tooth structure composed of the first arc-shaped harrow tooth 3012 and the second arc-shaped harrow tooth 3013 rotates clockwise by a certain angle with the hinge point of the first arc-shaped harrow tooth 3012 and the harrow head 3011 as the center. Therefore, the swinging range of the plowing unit 301 in this case is small, which is beneficial to subsequent plowing work. When the height of the hard obstacle 13011 above the end of the second arc-shaped harrow tooth 3013 is high, the resistance generated by the hard obstacle 13011 increases as the tractor 11011 moves to the right, so that the harrow head 3011 rotates clockwise with the hinge point of the harrow head 3011 and the horizontal rod 1012 as the center, thereby increasing the swinging angle to pass over the current hard obstacle 13011. In this process, the first elastic extension rod 4011 is shortened, the second elastic extension rod 4012 is lengthened, and the harrow head 3011 can swing by a large angle to pass over the current hard obstacle 13011. After passing over the obstacle, the two elastic extension rods return to the balanced state.

[0039] Generally, the loose soil 12011 is easy for dry wood and weeds and the like to enter the soil 12011 due to its low compactness, and the dry wood and weeds and the like decompose in the soil 12011, thereby increasing the nutrients of the soil 12011. The hard soil 12011 is difficult for dry wood and weeds and the like to enter the soil 12011 due to its high compactness, which leads to a lack of organic matter and the like in the hard soil 12011, thereby reducing the nutrients of the soil 12011. Therefore, it is necessary to add corresponding nutrients to the soil 12011 when plowing the hard soil 12011 to improve the hard soil 12011. In order to solve the above problems, a pushing mechanism is further installed on the first arc-shaped harrow tooth 3012 in the embodiment, and the pushing mechanism is connected with the second arc-shaped harrow tooth 3013.

[0040] Specifically, the pushing mechanism comprises a first connecting rod 5011 hinged with the first arc-shaped harrow tooth 3012, a second connecting rod 5012 hingedly arranged at a free end of the first connecting rod 5011, and a spring 5013 arranged on the second connecting rod 5012, one end of the second connecting rod 5012 away from the first connecting rod 5011 is hinged with the second arc-shaped harrow tooth 3013, and one end of the spring 5013 away from the second connecting rod 5012 is connected with the second arc-shaped harrow tooth 3013.

[0041] In the embodiment, the first arc-shaped tine 3012 is provided with an arc-shaped sliding groove matched with the second arc-shaped tine 3013, and the second arc-shaped tine 3013 is slidingly arranged in the arc-shaped sliding groove; the frame 1011 is provided with a nutrient agent conveying mechanism, which comprises a liquid storage tank 6011 and a liquid conveying pipe 6012, one end of the liquid conveying pipe 6012 being communicated with the liquid storage tank 6011 and the other end being communicated with the arc-shaped sliding groove.

[0042] In the embodiment, the first arc-shaped tine 3012 is provided with a flow channel 7011, one end of the flow channel 7011 being communicated with the liquid conveying pipe 6012 and the other end being communicated with the arc-shaped sliding groove; the second arc-shaped tine 3013 is provided, at one end close to the flow channel 7011, with a piston 8011 matched with the flow channel 7011, and the piston 8011 is slidingly connected with the flow channel 7011.

[0043] In the embodiment, the first arc-shaped tine 3012 is provided, at one end close to the arc-shaped sliding groove, with a permanent magnet 9011, and the end of the second arc-shaped tine 3013 close to the flow channel 7011 is made of ferromagnetic material.

[0044] With reference to Figure 4 and Figure 5 When the tine encounters loose soil 12011 during the plowing operation, the second connecting rod 5012 has a tendency to rotate clockwise around the hinge point between itself and the second arc-shaped tine 3013 under the action of the spring 5013, so that the piston 8011 at one end of the second arc-shaped tine 3013 is always inserted into the flow channel 7011, preventing the nutrient agent in the flow channel 7011 from flowing out. At the same time, the magnetic attraction force between the permanent magnet 9011 and the end of the second arc-shaped tine 3013 further improves the stability of the connection at this point.

[0045] When the rake teeth encounter the hardened soil 12011 (when the hardness of the soil 12011 is too high) during the ploughing operation, the first arc-shaped rake tooth 3012 rotates clockwise around the hinge point thereof with the rake head 3011 and reaches the maximum rotation angle. Under the reaction force of the resistance of the soil 12011, the hardened soil 12011 pushes the second connecting rod 5012, so that the second connecting rod 5012 rotates counterclockwise around the hinge point thereof with the second arc-shaped rake tooth 3013. When the second connecting rod 5012 rotates (the included angle between the second connecting rod 5012 and the first arc-shaped rake tooth 3012 gradually decreases), the second connecting rod 5012 rotates around the bottom end thereof and the other end thereof moves towards the first arc-shaped rake tooth 3012. During this process, since one end of the first connecting rod 5011 is hinged with the first arc-shaped rake tooth 3012 and the other end thereof is hinged with one end of the second connecting rod 5012, when the second connecting rod 5012 rotates, the bottom end thereof drives the second arc-shaped rake tooth 3013 to extend along the arc-shaped sliding groove on the first arc-shaped rake tooth 3012, so as to further increase the depth of the second arc-shaped rake tooth 3013 into the soil 12011. It should be noted that only when the soil 12011 reaches a certain hardness, the resistance of the spring 5013 can be overcome, and the second connecting rod 5012 can rotate. This is because the rotation of the second connecting rod 5012 needs to overcome two resistances, one is the elastic force of the spring 5013 (the spring 5013 is used for the reset action of the second connecting rod 5012, so that the second connecting rod 5012 can remain in the state of Figure 5 Figure 6 When the second connecting rod 5012 swings, the second arc-shaped rake tooth 3013 extends outward synchronously and drives the piston 8011 to separate from the flow channel 7011, so that the nutrient agent in the nutrient pipe 6012 can be sprayed into the hardened soil 12011 through the flow channel 7011 and the arc-shaped sliding groove in sequence, so as to improve the hardened soil 12011 (the compactness is larger). The magnetic force of the permanent magnet 9011 acting on the end portion of the second arc-shaped rake tooth 3013 makes the rake tooth structure composed of the first arc-shaped rake tooth 3012 and the second arc-shaped rake tooth 3013 prevent the piston 8011 from separating from the flow channel 7011 when moving in the unhardened soil 12011, so as to prevent the waste of the nutrient agent of the soil 12011.

[0046] Of course, the present application can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application. However, these corresponding changes and modifications should all belong to the protection scope of the claims attached to the present application.​

Claims

1. A multifunctional soil ploughing device with adjustable depth, comprising a frame (1011) and two horizontal rods (1012) arranged in parallel and spaced apart on the frame (1011), one side of the frame (1011) being provided with a mounting mechanism (201); characterized in that, Any of the crossbars (1012) are provided with a plurality of plowing units (301) for adjusting the plowing depth according to the soil (12011) condition, the plurality of plowing units (301) on two crossbars (1012) are staggered, any of the plowing units (301) comprises a rake head (3011) hinged with the corresponding crossbar (1012), a first arc-shaped rake tooth (3012) hinged with the rake head (3011), a second arc-shaped rake tooth (3013) slidingly connected with the first arc-shaped rake tooth (3012), and a pushing mechanism arranged on the first arc-shaped rake tooth (3012), the pushing mechanism is connected with the second arc-shaped rake tooth (3013); the rake head (3011) is a T-shaped structure, the rake head (3011) comprises a rod body, a top end and a bottom end arranged at one end of the rod body, the free end of the rod body is hinged with the corresponding crossbar (1012), one end of the first arc-shaped rake tooth (3012) is hinged with the bottom end; the rake head (3011) is further provided with a retaining mechanism; the retaining mechanism comprises a first elastic telescopic rod (4011) hinged with the top end and a second elastic telescopic rod (4012) hinged with the rod body, one end of the first elastic telescopic rod (4011) away from the top end is hinged with the corresponding crossbar (1012); one end of the second elastic telescopic rod (4012) away from the rod body is hinged with the first arc-shaped rake tooth (3012), and the distance between this hinged point and the bottom end is less than the length of the first arc-shaped rake tooth (3012); The pushing mechanism comprises a first connecting rod (5011) hinged to the first arc-shaped tine (3012), a second connecting rod (5012) hinged to the free end of the first connecting rod (5011) and a spring (5013) arranged on the second connecting rod (5012), one end of the second connecting rod (5012) away from the first connecting rod (5011) being hinged to the second arc-shaped tine (3013); one end of the spring (5013) away from the second connecting rod (5012) being connected to the second arc-shaped tine (3013); the first arc-shaped tine (3012) being provided with an arc-shaped sliding groove adapted to the second arc-shaped tine (3013), the second arc-shaped tine (3013) being slidingly arranged in the arc-shaped sliding groove; the frame (1011) being provided with a nutrient agent delivery mechanism, the nutrient agent delivery mechanism comprising a liquid storage tank (6011) and a liquid delivery pipe (6012), one end of the liquid delivery pipe (6012) being in communication with the liquid storage tank (6011) and the other end being in communication with the arc-shaped sliding groove; the first arc-shaped tine (3012) being provided with a flow channel (7011), one end of the flow channel (7011) being in communication with the liquid delivery pipe (6012) and the other end being in communication with the arc-shaped sliding groove; the second arc-shaped tine (3013) being provided, at one end close to the flow channel (7011), with a piston (8011) adapted to the flow channel (7011), the piston (8011) being slidingly connected to the flow channel (7011); the first arc-shaped tine (3012) being provided, at one end close to the arc-shaped sliding groove, with a permanent magnet (9011), the end of the second arc-shaped tine (3013) close to the flow channel (7011) being made of ferromagnetic material; only when the soil (12011) reaches a certain hardness can the resistance of the spring (5013) be overcome, so that the second connecting rod (5012) can rotate; after the second connecting rod (5012) swings, the second arc-shaped tine (3013) synchronously extends outward and drives the piston (8011) to disengage from the flow channel (7011), so that the nutrient agent in the liquid delivery pipe (6012) can be sprayed into the hardened soil (12011) through the flow channel (7011) and the arc-shaped sliding groove in sequence.

2. The depth adjustable multi-functional soil tillage apparatus as claimed in claim 1, wherein, The frame (1011) is provided, on the side opposite to the mounting mechanism (201), with a soil clod breaking mechanism (10011).

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