Grooving and soil loosening linkage device applied to agricultural planting machine

Abstract

The invention belongs to the technical field of agricultural machinery, and particularly relates to a grooving and soil loosening linkage device applied to agricultural planting machinery. The device structurally comprises a soil loosening chain and further comprises a mounting frame body unit used for being connected with an agricultural machine body, a driving fluted disc unit arranged on the mounting frame body unit and a soil loosening frame body unit arranged on the driving fluted disc unit and used for mounting the soil loosening chain. The driving fluted disc unit is arranged on the mounting frame body unit, the driven wheel is arranged on the mounting frame body unit and meshed with the driving fluted disc unit, and the lifting frame body unit for grooving is arranged on the mounting frame body unit, meshed with the driven wheel and used for being inserted into a soil layer when the soil loosening chain enters the soil layer. Compared with the prior art, the soil loosening and grooving device at least has the beneficial effects that the soil loosening structure and the grooving structure are separated, the width limiting relation between soil loosening operation and grooving operation is relieved, and the practicability of the whole soil loosening and grooving operation is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a grooving and loosening linkage device applied to planting agricultural machinery. Background Art

[0002] The common types of agricultural machinery currently available mainly include planting machinery, fertilizing and spraying machinery, and harvesting machinery, etc. Among them, the main functions of planting machinery include loosening the soil, grooving, digging holes, sowing, and covering the soil.

[0003] Correspondingly, the main structures of the planting agricultural machinery include a traveling vehicle, a loosening structure, a slotting and digging structure, and an additional structure. Generally, slotting and digging are performed one by one. For example, yams and potatoes need to be sown after slotting, while tomatoes and peppers need to be sown after digging holes, so as to insert the seedlings one by one.

[0004] For example, a Chinese utility model patent with authorization announcement number CN218649215U and authorization announcement date 2023.03.21 discloses a precise pit processing loosening device, including a mobile trolley and four wheels installed at the bottom of the mobile trolley. A notch is opened on one side of the mobile trolley, and the mobile trolley is fixedly connected to a protective frame at the notch. A liftable loosening mechanism is slidably connected to a track plate arranged on the inner side of the protective frame. The loosening mechanism includes a T-shaped slider adapted to the T-shaped track of the track plate, and a lifting plate fixedly connected to the T-shaped slider. The lifting plate is provided with two symmetrically distributed screw holes, and both screw holes are adapted to be fitted with screw rods.

[0005] The main advantages of the pit processing loosening device in this utility model patent are: good stability, stable rotation of the drill rod, and easy disassembly and assembly.

[0006] However, in actual use, the pit processing loosening device still has at least the following practical problems, which are specifically manifested as follows: First, in order to have both the function of loosening soil and the function of digging pits and trenches, its loosening mechanism can only be set to a rod shape to ensure that the pit and trench structure will not be too large. This also makes the width of the effective loosening area extremely small, greatly reducing the efficiency and practicality of the loosening operation; Secondly, correspondingly, also due to the functional characteristics of the loosening mechanism, when grooving and loosening the soil, the grooving depth can only be equal to the loosening depth. Although the above depth values ​​are adjustable, the fact that the depths of the two are the same cannot be changed. This is also impractical and will greatly increase the difficulty for crops to take root. Summary of the invention

[0007] The invention provides a grooving and loosening soil linkage device applied to a planting agricultural machine, and the technical problem to be solved is: how to make both the grooving operation and the loosening soil operation have high flexibility and practicality.

[0008] The technical solution adopted by the present invention to solve the above-mentioned problems is: a grooving and loosening linkage device applied to planting agricultural machinery, the structure includes a loosening chain, and also includes a mounting frame unit for connecting the agricultural machinery body, a driving gear disc unit arranged on the mounting frame unit, a loosening frame unit arranged on the driving gear disc unit and used for mounting the loosening chain, a driven wheel arranged on the mounting frame unit and meshed with the driving gear disc unit, and a grooving lifting frame unit arranged on the mounting frame unit, meshed with the driven wheel, and used for inserting into the soil layer when the loosening chain enters the soil layer.

[0009] A further preferred technical solution is that the mounting frame unit includes a transverse plate, a front end plate arranged on the transverse plate and used for mounting the driving gear disc unit and the loosening frame unit in the moving direction, a fixed plate arranged on the transverse plate and used for mounting the driven wheel, and a rear end track plate arranged on the transverse plate and engaged with the grooving lifting frame unit.

[0010] A further preferred technical solution is that the active gear disc unit includes a driving motor arranged on the front end plate in the moving direction, a rotating gear disc arranged on the driving motor, meshing with the driven wheel and used to install the loosening frame unit, and a rotating adjustment motor arranged on the front end plate in the moving direction and connected to the rotating gear disc.

[0011] A further preferred technical solution is that the active gear disc unit further includes a connecting chain arranged on the rotation adjustment motor, and a worm arranged on the connecting chain and meshing with the rotating gear disc.

[0012] A further preferred technical solution is that the loosening frame unit includes a connecting block arranged on the side of the rotating gear disc, a connecting plate arranged on the connecting block, a driving wheel arranged on the connecting plate and connected to the driving motor, and a soil layer entering wheel arranged on the connecting plate and used together with the driving wheel to install the loosening chain.

[0013] A further preferred technical solution is that the grooving lifting frame unit includes a vertical rack that is clamped on the rear end rail plate and meshes with the driven wheel, a grooving push plate, and a transverse connecting plate that is arranged on the lower end surface of the vertical rack and is used to align the grooving push plate and the loosening chain.

[0014] A further preferred technical solution is that: the mounting frame unit further includes a limiting rod arranged on the rear end track plate; the slotting lifting frame unit further includes a limiting hole block arranged on the vertical rack and sleeved on the limiting rod.

[0015] A further preferred technical solution is that the slotting lifting frame unit also includes a transverse rotating plate hingedly arranged on the transverse connecting plate and used for installing the slotting pushing plate.

[0016] A further preferred technical solution is that the cross-sectional shape of the grooved push plate is V-shaped, and the opening of the V-shape faces the rear end of the agricultural machinery body in the traveling direction.

[0017] A further preferred technical solution is that the method of use comprises the following steps in sequence: S1, turning on the driving motor to make the loosening chain rotate; S2, rotating the transverse rotating plate so that the slotting pushing plate is close to the mounting frame unit; S3, turning on the rotation adjustment motor, so that the vertical rack rises, and the loosening frame unit rotates to a position below the slotting push plate; S4, continue to rotate the loosening frame unit downward, and open the agricultural machine body to loosen the soil below the slotting push plate to form a pre-loosening area; S5, reversely turning on the rotation adjustment motor so that the loosening frame unit rotates away from the area below the slotting push plate; S6, reversely rotating the transverse rotating plate so that the slotting pushing plate is aligned with the loosening chain; S7, continue to reversely turn on the rotary adjustment motor, so that the vertical rack descends, and the loosening chain and the slotting push plate are inserted into the pre-loosening area together; S8. The rotary regulating motor is turned off to maintain the depth of the loosening chain and the grooving push plate entering the soil layer, and the agricultural machine body moves forward to perform the grooving and loosening operations.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: First, the loosening structure and the slotting structure are separated, eliminating the width restriction relationship between the loosening operation and the slotting operation, and improving the practicality of the entire loosening and slotting operation; Second, the depth restriction relationship between the loosening operation and the slotting operation is further eliminated, so that the loosening operation depth can be greater than the slotting operation depth, reducing the difficulty of crops taking root downwards, and further improving the practicality and flexibility of the device; Third, the rotation of the loosening frame unit is linked with the lifting and lowering of the slotting lifting frame unit, so that the loosening operation and the slotting operation can be opened and closed together, thereby improving the convenience and practicality of the device; Fourth, the soil loosening frame unit has a two-way rotation function, which can first form a pre-loosening area under the grooving lifting frame unit, and then perform subsequent, main soil loosening and grooving operations, to ensure that when the grooving lifting frame unit is first inserted into the soil layer, it is inserted in the loosened soil area, rather than in the relatively hard undone soil area, thereby avoiding the folding of the grooving lifting frame unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the mounting frame unit in the present invention.

[0021] Figure 3 It is a schematic diagram of the position structure of the active gear disc unit in the present invention.

[0022] Figure 4 It is a schematic diagram of the position structure of the loosening frame unit in the present invention.

[0023] Figure 5 It is a schematic diagram of the position structure of the lifting frame unit for slotting in the present invention.

[0024] Figure 6 It is a schematic diagram of the position and shape of the transverse rotating plate in the present invention from a top view.

[0025] Figure 7 It is a schematic diagram of the forming method of the pre-soil loosening area in the present invention from a top view.

[0026] Figure 8 It is a schematic diagram of the position of the pre-soil scarification area in the present invention.

[0027] Fig. 9 It is a schematic diagram of the positions of the loosening chain and the grooving push plate in the present invention from a top view.

[0028] In the figure, the meanings of the symbols are as follows: Soil layer a, agricultural machine body b, pre-soil loosening area c, main soil loosening area d, rotation area of ​​the soil loosening frame unit e, insertion position of the push plate for slotting f; Soil loosening chain 11; Installation frame unit 1, driving gear disc unit 2, loosening frame unit 3, driven wheel 4, grooving lifting frame unit 5; Horizontal plate 101, front plate 102 in the moving direction, fixed plate 103, rear track plate 104, and limit rod 105; Driving motor 201, rotating toothed disc 202, rotating adjustment motor 203, connecting chain 204, worm 205; Connecting block 301, connecting plate 302, driving wheel 303, soil layer entering wheel 304; A vertical rack 501 , a slotting push plate 502 , a horizontal connecting plate 503 , a limiting hole block 504 , and a horizontal rotating plate 505 . DETAILED DESCRIPTION

[0029] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0030] like Figure 1-Figure 9 As shown, a grooving and loosening linkage device applied to a planting agricultural machinery comprises a loosening chain 11, and also comprises a mounting frame unit 1 for connecting a vehicle body b of the agricultural machinery, a driving sprocket unit 2 arranged on the mounting frame unit 1, a loosening frame unit 3 arranged on the driving sprocket unit 2 and used for mounting the loosening chain 11, a driven wheel 4 arranged on the mounting frame unit 1 and meshed with the driving sprocket unit 2, and a grooving lifting frame unit 5 arranged on the mounting frame unit 1 and meshed with the driven wheel 4 and used for inserting into the soil layer a when the loosening chain 11 enters the soil layer a.

[0031] In this embodiment, the main body material of the device is high-strength steel, the mounting frame unit 1 is screwed to the agricultural machinery body b, and the main part of the active gear unit 2 is sleeved with the mounting frame unit 1, ensuring that it can directly drive the loosening frame unit 3 to rotate, so that the loosening chain 11 can enter the soil layer a as needed to perform loosening operations.

[0032] The active gear unit 2 can also indirectly drive the slotting lifting frame unit 5 downward through the driven wheel 4, so that the latter can be inserted into the soil layer a as needed to perform the slotting operation. The loosening depth is generally greater than the slotting depth. For example, when planting yam, the loosening depth is 20 cm and the slotting depth is 14 cm.

[0033] When the main loosening area d is formed by loosening the soil and grooving, the loosening chain 11 is located at the front end, and the slotting lifting frame unit 5 is located at the rear end. When the pre-loosening area c is formed, the slotting lifting frame unit 5 is idle, and the loosening chain 11 performs the loosening operation. At this time, the agricultural machine body b can move forward or backward, and finally ensure that the length of the pre-loosening area c is relatively large, so that the loosening chain 11 and the slotting lifting frame unit 5 can enter together.

[0034] The role of the pre-loosening area c is to allow the slotting lifting frame unit 5 to be inserted into the loosening area rather than the harder uncracked area when it is first inserted, thereby greatly reducing the risk of the slotting lifting frame unit 5 being broken.

[0035] The mounting frame unit 1 includes a transverse plate 101, a front end plate 102 in the moving direction which is arranged on the transverse plate 101 and is used to mount the active gear disc unit 2 and the loosening frame unit 3, a fixing plate 103 which is arranged on the transverse plate 101 and is used to mount the driven wheel 4, and a rear end track plate 104 which is arranged on the transverse plate 101 and is engaged with the grooving lifting frame unit 5.

[0036] In this embodiment, the mounting frame unit 1 is integrally formed, and the transverse plate 101, the front plate 102 in the moving direction, the fixed plate 103 and the rear track plate 104 can all be used to connect and fix the agricultural machinery body b.

[0037] Among them, the front end plate 102 in the moving direction is grooved or holed for installing the active gear unit 2, the fixed plate 103 is holed for installing the driven wheel 4, and the rear end track plate 104 is provided with a vertical groove for horizontally limiting the slotted lifting frame unit 5.

[0038] The active gear disc unit 2 includes a driving motor 201 arranged on the front end plate 102 in the moving direction, a rotating gear disc 202 arranged on the driving motor 201 and meshing with the driven wheel 4 and used to install the loosening frame unit 3, and a rotating adjustment motor 203 arranged on the front end plate 102 in the moving direction and connected to the rotating gear disc 202.

[0039] In this embodiment, the rotating toothed disc 202 is directly sleeved on the motor shaft of the driving motor 201 , and a bearing is provided therebetween. The driving motor 201 does not drive the rotating toothed disc 202 to rotate.

[0040] Whether the loosening chain 11 enters the soil layer a is controlled by the rotation adjustment motor 203, that is, the rotation adjustment motor 203 is engaged with the rotating toothed disc 202, and the rotating toothed disc 202 is fixedly connected to the loosening frame unit 3. The rotation adjustment motor 203 is a motor type whose motor shaft cannot rotate after power failure, ensuring that the loosening frame unit 3 does not rotate when the device is in normal use.

[0041] The active gear disc unit 2 further includes a connection chain 204 disposed on the rotation adjustment motor 203 , and a worm 205 disposed on the connection chain 204 and meshing with the rotating gear disc 202 .

[0042] In this embodiment, the front end plate 102 in the moving direction is further provided with two bearings for mounting the worm 205, and one end of the worm 205 is provided with a gear for mounting the connecting chain 204. For details, please refer to the attached Figure 3 .

[0043] The loosening frame unit 3 includes a connecting block 301 arranged on the side of the rotating gear disc 202, a connecting plate 302 arranged on the connecting block 301, a driving wheel 303 arranged on the connecting plate 302 and connected to the driving motor 201, and a soil layer entering wheel 304 arranged on the connecting plate 302 and used together with the driving wheel 303 to install the loosening chain 11.

[0044] In this embodiment, there are two connecting blocks 301 fixedly connected to the side of the rotating toothed disc 202, and there are two circles of loosening chains 11, which are respectively located on both sides of the connecting plate 302, thereby providing a relatively wide loosening area.

[0045] The driving wheel 303 is aligned with the rotating gear disc 202 , but the connection modes of the two are completely different. The former is fixedly connected to the motor shaft of the driving motor 201 for inputting power, while the rotating gear disc 202 only allows the motor shaft of the driving motor 201 to pass through.

[0046] In addition, the side of the soil layer entering the wheel 304 is the side of the loosening chain 11 entering the soil layer a. When the device operates normally, the height of the soil layer entering the wheel 304 is lower than the driving wheel 303.

[0047] The grooving lifting frame unit 5 includes a vertical rack 501 that is engaged on the rear end rail plate 104 and meshes with the driven wheel 4, a grooving push plate 502, and a transverse connecting plate 503 that is arranged on the lower end surface of the vertical rack 501 and is used to align the grooving push plate 502 and the loosening chain 11.

[0048] In this embodiment, the slotting pushing plate 502 is disposed on the lower surface of the transverse connecting plate 503 .

[0049] The mounting frame unit 1 further includes a limiting rod 105 disposed on the rear end track plate 104 ; the slotting lifting frame unit 5 further includes a limiting hole block 504 disposed on the vertical rack 501 and sleeved with the limiting rod 105 .

[0050] In this embodiment, there are two limit rods 105, one of which is disposed on the horizontal plate 101, thereby eliminating a set of end blocks for fixing the limit rods 105. Accordingly, the maximum rise of the limit hole block 504 is to abut against the lower surface of the horizontal plate 101.

[0051] The slotting lifting frame unit 5 further includes a transverse rotating plate 505 which is hingedly arranged on the transverse connecting plate 503 and is used for mounting the slotting pushing plate 502 .

[0052] In this embodiment, the function of the transverse rotating plate 505 is only to form a pre-loosening area c, so as to ensure that the slotting push plate 502 is located in the loosening area when it is initially inserted downward.

[0053] As attached Figure 6 As shown, when the transverse rotating plate 505 is flush with the transverse connecting plate 503 , it is the starting point of the rotation of the transverse rotating plate 505 , and it is also the normal use state of the slotting pushing plate 502 .

[0054] The horizontal rotating plate 505 rotates toward the active gear unit 2 to "close" the slotting push plate 502. At this time, the rotation adjustment motor 203 is turned on to rotate the loosening frame unit 3 to make it close to the slotting lifting frame unit 5, and finally enter the soil layer area below the slotting lifting frame unit 5 to form a pre-loosening area c.

[0055] Then the loosening frame unit 3 rotates away from the slotting lifting frame unit 5 and returns to the attached Figure 1 The disclosed position is shown, and finally the transverse rotating plate 505 is rotated and reset to carry out the subsequent main grooving and loosening operations.

[0056] Of course, the transverse rotating plate 505 may not be used, and the grooving pushing plate 502 may be directly inserted into the hard soil layer.

[0057] The cross-sectional shape of the groove pushing plate 502 is V-shaped, and the opening of the V-shape faces the rear end of the agricultural machine body b in the traveling direction.

[0058] In this embodiment, the width of the V-shaped structure determines the slot width.

[0059] The method for using the device comprises the following steps in sequence: S1, turning on the driving motor 201 to make the loosening chain 11 rotate; S2, rotating the transverse rotating plate 505 so that the slotting pushing plate 502 is close to the mounting frame unit 1; S3, turning on the rotation adjustment motor 203, so that the vertical rack 501 rises, and the loosening frame unit 3 rotates to a position below the slotting push plate 502; S4, continue to rotate the loosening frame unit 3 downward, and open the agricultural machine body b to loosen the soil below the slotting push plate 502 to form a pre-loosening area c; S5, reversely turning on the rotation adjustment motor 203, so that the loosening frame unit 3 rotates away from the area below the slotting push plate 502; S6, reversely rotate the transverse rotating plate 505 so that the slotting pushing plate 502 is aligned with the loosening chain 11; S7, continue to reversely turn on the rotation adjustment motor 203, so that the vertical rack 501 descends, and the loosening chain 11 and the slotting push plate 502 are inserted into the pre-loosening area c together; S8, the rotary regulating motor 203 is turned off to maintain the depth of the loosening chain 11 and the grooving push plate 502 entering the soil layer a, and the agricultural machine body b moves forward to perform the grooving and loosening operation.

[0060] In S2 , the lateral rotating plate 505 rotates in a direction to retract the slotting pushing plate 502 .

[0061] The word "reverse" in S5 means that the rotation direction of the motor shaft of the rotation adjustment motor 203 at this time is opposite to the rotation direction of the motor shaft of the rotation adjustment motor 203 in S3.

[0062] The word "reverse" in S6 refers to the rotation and expansion of the slotting push plate 502, which is opposite to the rotation direction of the transverse rotating plate 505 in S2. The end point of the reverse rotation action is that the transverse rotating plate 505 is flush with the transverse connecting plate 503, corresponding to the normal slotting use state of the slotting push plate 502.

[0063] The word "reverse" in S7 means that the loosening frame unit 3 continues to rotate after S5 without changing the rotation direction.

[0064] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A grooving and loosening linkage device for a planting agricultural machine, the structure comprising a loosening chain (11), characterized in that: The invention also comprises a mounting frame unit (1) for connecting to an agricultural machinery body (b), a driving sprocket unit (2) arranged on the mounting frame unit (1), a loosening frame unit (3) arranged on the driving sprocket unit (2) and used for mounting the loosening chain (11), a driven wheel (4) arranged on the mounting frame unit (1) and meshing with the driving sprocket unit (2), and a slotting lifting frame unit (5) arranged on the mounting frame unit (1) and meshing with the driven wheel (4) and used for inserting into the soil layer (a) when the loosening chain (11) enters the soil layer (a).

2. The grooving and loosening linkage device for planting agricultural machinery according to claim 1, characterized in that: The mounting frame unit (1) comprises a transverse plate (101), a front end plate (102) in the moving direction arranged on the transverse plate (101) and used for mounting the driving gear disc unit (2) and the loosening frame unit (3), a fixing plate (103) arranged on the transverse plate (101) and used for mounting the driven wheel (4), and a rear end track plate (104) arranged on the transverse plate (101) and engaged with the slotting lifting frame unit (5).

3. The grooving and loosening linkage device for planting agricultural machinery according to claim 2, characterized in that: The active toothed disc unit (2) comprises a driving motor (201) arranged on the front end plate (102) in the moving direction, a rotating toothed disc (202) arranged on the driving motor (201) and meshing with the driven wheel (4) and used for mounting the loosening frame unit (3), and a rotating regulating motor (203) arranged on the front end plate (102) in the moving direction and connected to the rotating toothed disc (202).

4. The grooving and loosening linkage device for planting agricultural machinery according to claim 3, characterized in that: The active toothed disc unit (2) further comprises a connecting chain (204) arranged on the rotation adjustment motor (203), and a worm (205) arranged on the connecting chain (204) and meshing with the rotating toothed disc (202).

5. The grooving and loosening linkage device for planting agricultural machinery according to claim 3, characterized in that: The loosening frame unit (3) comprises a connecting block (301) arranged on the side of the rotating toothed disc (202), a connecting plate (302) arranged on the connecting block (301), a driving wheel (303) arranged on the connecting plate (302) and connected to the driving motor (201), and a soil layer entering wheel (304) arranged on the connecting plate (302) and used together with the driving wheel (303) to install the loosening chain (11).

6. The grooving and loosening linkage device for planting agricultural machinery according to claim 3, characterized in that: The slotting lifting frame unit (5) comprises a vertical rack (501) which is mounted on the rear end track plate (104) and meshes with the driven wheel (4), a slotting push plate (502), and a transverse connecting plate (503) which is arranged on the lower end surface of the vertical rack (501) and is used to align the slotting push plate (502) and the loosening chain (11).

7. The grooving and loosening linkage device for planting agricultural machinery according to claim 6, characterized in that: The mounting frame unit (1) further comprises a limiting rod (105) arranged on the rear end track plate (104); the slotting lifting frame unit (5) further comprises a limiting hole block (504) arranged on the vertical rack (501) and sleeved on the limiting rod (105).

8. The grooving and loosening linkage device for planting agricultural machinery according to claim 6, characterized in that: The slotting lifting frame unit (5) further comprises a transverse rotating plate (505) hingedly arranged on the transverse connecting plate (503) and used for mounting the slotting pushing plate (502).

9. The grooving and loosening linkage device for planting agricultural machinery according to claim 6, characterized in that: The cross-sectional shape of the groove pushing plate (502) is V-shaped, and the opening of the V-shape faces the rear end of the agricultural machine body (b) in the direction of travel.

10. The grooving and loosening linkage device for planting agricultural machinery according to claim 8, characterized in that The method of use includes the following steps: S1, turning on the driving motor (201) to allow the loosening chain (11) to rotate; S2, rotating the transverse rotating plate (505) so that the slotting pushing plate (502) is close to the mounting frame unit (1); S3, turning on the rotation adjustment motor (203), so that the vertical rack (501) rises, and the loosening frame unit (3) rotates to a position below the slotting push plate (502); S4, continuing to rotate the soil loosening frame unit (3) downward, and opening the agricultural machine body (b) to loosen the soil below the slotting push plate (502), thereby forming a pre-soil loosening area (c); S5, turning on the rotation adjustment motor (203) in the reverse direction, so that the loosening frame unit (3) rotates away from the area below the slotting push plate (502); S6, reversely rotating the transverse rotating plate (505) so that the slotting pushing plate (502) is aligned with the loosening chain (11); S7, continue to reversely turn on the rotary adjustment motor (203), so that the vertical rack (501) descends, and the loosening chain (11) and the slotting push plate (502) are inserted into the pre-loosening area (c); S8, the rotary regulating motor (203) is turned off to maintain the depth of the loosening chain (11) and the slotting push plate (502) entering the soil layer (a), and the agricultural machine body (b) moves forward to perform slotting and loosening operations.

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