Large adjustment bias subsoiler

Abstract

The utility model relates to a big tune offset deep loosing machine belongs to the technical field of agricultural machinery. The utility model discloses solve the problem that the prior art has complex structure and small distance of adjusting and offsetting. Including front main girder, rear main girder, connecting piece, deep loosing hook and hydraulic oil cylinder, and the rear main girder is slidably installed on the front main girder through two connecting pieces, a plurality of deep loosing hooks are installed on the rear main girder, one end of the hydraulic oil cylinder is connected with the front main girder, the other end of the hydraulic oil cylinder is connected with a connecting piece, and the hydraulic oil cylinder is used for driving the rear main girder to slide on the front main girder. The utility model is used for the loosening operation of farmland soil, and has the advantage that the position of deep loosing hook is adjusted flexibly.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural machinery, and in particular to a large-scale deep tillage machine. Background Technology

[0002] In agricultural production, deep soil loosening is a key operation to improve soil structure and enhance the quality of arable land. Its core purpose is to break up the plow pan formed by long-term tillage, increase soil permeability and water retention capacity, create favorable conditions for crop root growth, and thus improve crop yield and quality.

[0003] Subsoilers are widely used machinery for deep loosening of arable land soil, effectively increasing rainwater infiltration rates and soil water retention. Traditional deep tillage operations are typically performed on furrows, with the subsoiler's hooks corresponding one-to-one with the furrows. However, to further optimize the arable land soil environment, agricultural production often employs a tillage pattern where furrows and ridges are interchanged. In this case, the subsoiler hooks need to be moved to the original ridge position. By subsoiling the raised ridges, the soil from the broken ridges between adjacent ridges is collected back into the original furrow, and subsequent covering with soil completes the conversion between furrows and ridges.

[0004] Traditional subsoilers typically require manual disassembly of the subsoil hook when adjusting it, which is inconvenient and inefficient. Although some existing subsoilers incorporate a movable main beam to adjust the hook's position, these designs still suffer from structural complexity and limited adjustment range, making them unsuitable for flexible operation. Utility Model Content

[0005] In view of the problems of complex structure and small adjustment distance in the existing technology, the purpose of this utility model is to provide a large adjustment deep loosening machine.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A large-scale deep slack loom includes: a front main beam 1, a rear main beam 2, connecting parts 3, deep slack hooks 4, and a hydraulic cylinder 5. The rear main beam 2 is slidably mounted on the front main beam 1 via two connecting parts 3. Multiple deep slack hooks 4 are mounted on the rear main beam 2. One end of the hydraulic cylinder 5 is connected to the front main beam 1, and the other end of the hydraulic cylinder 5 is connected to a connecting part 3. The hydraulic cylinder 5 is used to drive the rear main beam 2 to slide on the front main beam 1.

[0008] Furthermore, both the front main beam 1 and the rear main beam 2 are square tube structures; the front main beam 1 is located in front of the rear main beam 2, and the front main beam 1 and the rear main beam 2 are arranged parallel to each other.

[0009] Furthermore, the connecting component 3 includes a sleeve 31, side plates 32, a base plate 33, and a first U-bolt 34. A side plate 32 is connected to each of the left and right ends of the base plate 33, and the two side plates 32 are arranged parallel to each other. Both side plates 32 and the base plate 33 are connected to the sleeve 31. The sleeve 31 is slidably fitted onto the front main beam 1. Each of the two side plates 32 is provided with an installation port 321, and the rear main beam 2 passes through the two installation ports 321 on the two side plates 32. At least one first U-bolt 34 is provided between the two side plates 32, and both ends of any one first U-bolt 34 penetrate the base plate 33, and the base plate 33 is fastened to the rear main beam 2 by a nut.

[0010] Furthermore, it also includes a first connecting seat 6, which is connected to the front side of a sleeve 31, and the other end of the hydraulic cylinder 5 is connected to this sleeve 31 through the first connecting seat 6.

[0011] Furthermore, it also includes a second connecting seat 7, which is connected to the front side of the front main beam 1; one end of the hydraulic cylinder 5 is connected to the front main beam 1 through the second connecting seat 7.

[0012] Furthermore, it also includes a mounting base 8, each deep loosening hook 4 being detachably mounted on the rear main beam 2 via a mounting base 8; the mounting base 8 is provided with a first mounting channel 81, and the upper end of the deep loosening hook 4 is detachably mounted in the first mounting channel 81.

[0013] Furthermore, the deep loosening hook 4 includes a deep loosening leg 41, a deep loosening shovel 42, and a bolt 43. The lower end of the deep loosening leg 41 is provided with an insertion part 411. The deep loosening shovel 42 includes a shovel head 421 and a sleeve part 422. The sleeve part 422 is connected to the bottom side of the shovel head 421, and the sleeve part 422 and the bottom side of the shovel head 421 enclose each other to form a second installation channel 44. The insertion part 411 is detachably installed in the second installation channel 44. The lower end of the deep loosening leg 41 is provided with a first through hole 412, and the sleeve part 422 is provided with a second through hole 4221. The bolt 43 passes through the first through hole 412 and the second through hole 4221 and is fastened to the sleeve part 422 on the deep loosening leg 41 by a nut.

[0014] Furthermore, it also includes an upper suspension frame 9, which is installed in the middle of the front main beam 1 and is used to connect the tractor suspension.

[0015] Furthermore, it also includes a lower suspension frame 10, with two lower suspension frames 10 arranged symmetrically on the front main beam 1; the lower suspension frame 10 is used to connect the tractor suspension.

[0016] Furthermore, it also includes support wheel assemblies 11, with one support wheel assembly 11 installed at each of the left and right ends of the front main beam 1; each support wheel assembly 11 includes a support wheel seat 111, a support wheel bracket 112, a support wheel 113, and a double-ended bolt 114. The support wheel seat 111 is installed on the front main beam 1; one end of the support wheel bracket 112 is rotatably connected to the support wheel seat 111, and the support wheel 113 is installed at the other end of the support wheel bracket 112; the double-ended bolt 114 connects the support wheel seat 111 and the support wheel bracket 112, and is used to adjust the rotation angle of the support wheel bracket 112 around the support wheel seat 111.

[0017] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:

[0018] (1) This utility model mainly includes a front main beam, a rear main beam, connecting parts, deep loosening hooks, and a hydraulic cylinder. The rear main beam is slidably mounted on the front main beam through two connecting parts; multiple deep loosening hooks are installed on the rear main beam; one end of the hydraulic cylinder is connected to the front main beam, and the other end of the hydraulic cylinder is connected to a connecting part. The hydraulic cylinder drives the connecting part to move the rear main beam on the front main beam to achieve the adjustment function. The structural layout of this utility model is simple and the adjustment range is large.

[0019] (2) The connector in this utility model is installed on the rear main beam in a detachable manner, which not only facilitates the on-site assembly and debugging of the whole machine, but also facilitates subsequent equipment maintenance and component replacement.

[0020] (3) The deep loosening hook of this utility model includes a deep loosening leg, a deep loosening shovel and a bolt. The deep loosening shovel is sleeved on the insertion part of the deep loosening leg, which ensures the stability of the installation. It is detachable and connected by bolts. The structure is convenient for quick replacement when the deep loosening shovel is worn or damaged, or for replacing the deep loosening shovel of different sizes. Attached Figure Description

[0021] Figure 1 This is a first-view perspective three-dimensional structural diagram of a large-scale deep loosening machine according to this utility model;

[0022] Figure 2 This is a second-view perspective three-dimensional structural diagram of a large-scale deep loosening machine according to this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of a connecting component for a large-scale adjustable deep loosening machine according to this utility model;

[0024] Figure 4 This is an exploded view of the deep loosening hook of a large-scale deep loosening machine according to this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the mounting base for a large-scale deep loosening machine according to this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the upper suspension frame of a large-scale deep loosening machine according to this utility model;

[0027] Figure 7 This is a three-dimensional structural diagram of the lower suspension frame of a large-scale deep loosening machine according to this utility model;

[0028] Figure 8 This is a top view of a large-scale adjustable deep loosening machine of this utility model, showing its adjustment to one side.

[0029] Figure 9 This is a top view of a large-scale adjustable deep loosening machine of this utility model, showing its adjustment to the other side.

[0030] Figure 10 This is a schematic diagram of another embodiment of the large-adjustment deep loosening machine of this utility model;

[0031] Figure 11 This is a structural schematic diagram of the support wheel assembly of a large-scale adjustable deep loosening machine according to this utility model.

[0032] In the attached diagram: 1. Front main beam; 2. Rear main beam; 3. Connector; 31. Sleeve; 32. Side plate; 321. Mounting port; 33. Base plate; 34. First U-bolt; 4. Deep loosening hook; 41. Deep loosening leg; 411. Insertion part; 412. First through hole; 42. Deep loosening shovel; 421. Shovel head; 422. Sleeving part; 4221. Second through hole; 4222. Side limiting plate; 4223. Bottom limiting plate; 43. Bolt; 44. Second mounting channel; 5. Hydraulic cylinder; 6. First connecting seat; 7. Second connecting seat; 8. Mounting seat; 81. First mounting channel; 82. First mounting component; 83. Second mounting component; 9. Upper suspension frame; 91. Fixing plate; 92. Upper suspension plate; 921. 9211, Suspension block; 922, Third through hole; 923, Connecting block; 924, Sleeve block; 925, Fastening block; 93, Second U-bolt; 10, Lower suspension frame; 101, Lower suspension plate; 102, Third U-bolt; 103, Third connecting plate; 1031, Fourth through hole; 11, Support wheel assembly; 111, Support wheel seat; 1111, Fourth connecting plate; 1112, Third connecting shaft; 1113, Fifth connecting plate; 1114, First rotating shaft; 1115, Fourth U-bolt; 112, Support wheel bracket; 1121, Sixth connecting plate; 1122, Connecting column; 1123, Seventh connecting plate; 1124, Second rotating shaft; 113, Support wheel; 114, Double-ended bolt. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0034] Please refer to Figures 1 to 11 As shown, a large-scale adjustable deep slack loom is illustrated, comprising: a front main beam 1, a rear main beam 2, connecting parts 3, deep slack hooks 4, and a hydraulic cylinder 5. The rear main beam 2 is slidably mounted on the front main beam 1 via two connecting parts 3. Multiple deep slack hooks 4 are mounted on the rear main beam 2. One end of the hydraulic cylinder 5 is connected to the front main beam 1, and the other end of the hydraulic cylinder 5 is connected to a connecting part 3. The hydraulic cylinder 5 is used to drive the rear main beam 2 to slide on the front main beam 1.

[0035] Furthermore, in a preferred embodiment, both the front main beam 1 and the rear main beam 2 are square tube structures; the front main beam 1 is located in front of the rear main beam 2, and the front main beam 1 and the rear main beam 2 are arranged parallel to each other; the front main beam 1 is close to the rear side of the tractor.

[0036] Furthermore, in a preferred embodiment, the front main beam 1 and the rear main beam 2 are of equal length.

[0037] Furthermore, in a preferred embodiment, the connector 3 includes a sleeve 31, a side plate 32, a base plate 33, and a first U-bolt 34. The left and right ends of the base plate 33 are respectively connected to a side plate 32, and the two side plates 32 are arranged parallel to each other. Both side plates 32 and the base plate 33 are connected to the sleeve 31. The sleeve 31 is slidably sleeved on the front main beam 1. Both side plates 32 are provided with mounting holes 321, and the rear main beam 2 passes through the two mounting holes 321 on the two side plates 32. At least one first U-bolt 34 is provided between the two side plates 32, and both ends of any one first U-bolt 34 pass through the base plate 33, and the base plate 33 is fastened to the rear main beam 2 by nuts.

[0038] Furthermore, in a preferred embodiment, the first U-bolt 34 is a square-type U-bolt, and the inner side of the first U-bolt 34 is tightly fitted with the top side and the front and rear sides of the rear main beam 2; two first U-bolts 34 are provided between the two side plates 32. The connector 3 is installed on the rear main beam 2 in a detachable manner, which not only facilitates the assembly and debugging of the whole machine, but also facilitates subsequent equipment maintenance and component replacement.

[0039] Furthermore, in a preferred embodiment, a first connecting seat 6 is also included, which is connected to the front side of a sleeve 31, and the other end of the hydraulic cylinder 5 is connected to the sleeve 31 through the first connecting seat 6.

[0040] Furthermore, in a preferred embodiment, the first connecting seat 6 includes two first connecting plates, which are arranged one above the other and connected by a first connecting shaft; the other end of the hydraulic cylinder 5 is provided with a mounting hole, and the other end of the hydraulic cylinder 5 is hinged to the first connecting shaft through this mounting hole.

[0041] Furthermore, in a preferred embodiment, a second connecting seat 7 is also included, which is connected to the front side of the front main beam 1; one end of the hydraulic cylinder 5 is connected to the front main beam 1 through the second connecting seat 7.

[0042] Furthermore, in a preferred embodiment, the second connecting seat 7 includes two second connecting plates, which are arranged one above the other and connected by a second connecting shaft; one end of the hydraulic cylinder 5 is provided with a mounting hole, and one end of the hydraulic cylinder 5 is hinged to the second connecting shaft through this mounting hole.

[0043] Furthermore, in a preferred embodiment, it also includes a mounting base 8, and each deep loosening hook 4 is detachably mounted on the rear main beam 2 via a mounting base 8; the mounting base 8 is provided with a first mounting channel 81, and the upper end of the deep loosening hook 4 is detachably mounted in the first mounting channel 81.

[0044] Furthermore, in a preferred embodiment, the mounting base 8 includes a first mounting member 82 and a second mounting member 83. The first mounting member 82 and the second mounting member 83 are together sleeved on the rear main beam 2 and fastened together by a plurality of bolts. The first mounting channel 81 is disposed on the second mounting member 83, and the upper end of the deep loosening hook 4 is fixed by a bolt passing through the second mounting member 83.

[0045] Furthermore, in a preferred embodiment, the deep loosening hook 4 includes a deep loosening leg 41, a deep loosening shovel 42, and a bolt 43. The lower end of the deep loosening leg 41 is provided with an insertion part 411, which extends forward. The deep loosening shovel 42 includes a shovel head 421 and a sleeve part 422. The sleeve part 422 is connected to the bottom side of the shovel head 421, and the sleeve part 422 and the bottom side of the shovel head 421 enclose each other to form a second installation channel 44. The insertion part 411 is detachably installed in the second installation channel 44. The inner wall of the second installation channel 44 fits against the outer wall of the insertion part 411. The lower end of the deep loosening leg 41 is provided with a first through hole 412, and the sleeve part 422 is provided with a second through hole 4221. The bolt 43 passes through the first through hole 412 and the second through hole 4221 and is fastened to the sleeve part 422 on the deep loosening leg 41 by a nut.

[0046] Furthermore, in a preferred embodiment, the shovel head 421 has a plate-like structure, and the width of the shovel head 421 gradually increases from the front end to the rear end; the sleeve part 422 includes two side limiting plates 4222 and a bottom limiting plate 4223, the two side limiting plates 4222 are respectively connected to the left and right ends of the bottom limiting plate 4223; each of the two side limiting plates 4222 is provided with a second through hole 4221, and the two second through holes 4221 are respectively located on both sides of the first through hole 412; the bolt 43 passes through the two second through holes 4221 and the first through hole 412.

[0047] Furthermore, in a preferred embodiment, an upper suspension frame 9 is also included, which is installed at the middle position of the front main beam 1 and is used to connect the tractor suspension.

[0048] Furthermore, in a preferred embodiment, the upper suspension frame 9 includes a fixing plate 91, two upper suspension plates 92, and two second U-bolts 93, with the two upper suspension plates 92 arranged symmetrically on the left and right sides; each upper suspension plate 92 includes a suspension block 921, a connecting block 922, a sleeve block 923, and a fastening block 924, which are connected sequentially. The suspension block 921 and the connecting block 922 are perpendicular to each other, the connecting block 922 and the sleeve block 923 are perpendicular to each other, and the sleeve block 923 and the fastening block 924 are perpendicular to each other. 24 are perpendicular to each other; the suspension block 921 is provided with multiple third through holes 9211 arranged longitudinally, and the third through holes 9211 are used to install suspension pins; the sleeve block 923 is sleeved on the front main beam 1; a second U-bolt 93 is fastened to the front main beam 1, and the two ends of this second U-bolt 93 pass through the fastening block 924 on the upper suspension plate 92 and are fastened by nuts; another second U-bolt 93 is fastened to the front main beam 1, and the two ends of this second U-bolt 93 pass through the fastening block 924 on another upper suspension plate 92 and are fastened by nuts. The upper suspension frame 9 and the front main beam 1 are detachably connected, which is convenient for replacement and maintenance.

[0049] Furthermore, in a preferred embodiment, it also includes a lower suspension frame 10, with two lower suspension frames 10 arranged symmetrically on the front main beam 1; the lower suspension frames 10 are used to connect the tractor suspension.

[0050] Furthermore, in a preferred embodiment, the lower suspension frame 10 includes a lower suspension plate 101, two third U-bolts 102, and two third connecting plates 103. The two third U-bolts 102 are both fastened to the front main beam 1, and both ends of the third U-bolts 102 pass through the lower suspension plate 101 and are fastened by nuts. The two third connecting plates 103 are arranged left and right and parallel to each other. Each of the two third connecting plates 103 has a fourth through hole 1031, which is used to install suspension pins.

[0051] Furthermore, in a preferred embodiment, the two connectors 3 are located on the left and right sides of the upper suspension frame 9, respectively, and the second connector 7 is located on the left or right side of the suspension frame 9; when the connector 3 located on the left side of the upper suspension frame 9 is connected to the first connector 6, the second connector 7 is located on the right side of the suspension frame 9; when the connector 3 located on the right side of the upper suspension frame 9 is connected to the first connector 6, the second connector 7 is located on the left side of the suspension frame 9.

[0052] Furthermore, in a preferred embodiment, five evenly spaced deep loosening hooks 4 are installed on the rear main beam 2.

[0053] Furthermore, in a preferred embodiment, please refer to Figure 10 and 11 The system also includes support wheel assemblies 11, with one support wheel assembly 11 installed at each of the left and right ends of the front main beam 1. Each support wheel assembly 11 includes a support wheel seat 111, a support wheel bracket 112, a support wheel 113, and a double-ended bolt 114. The support wheel seat 111 is mounted on the front main beam 1. One end of the support wheel bracket 112 is rotatably connected to the support wheel seat 111, and the support wheel 113 is detachably mounted on the other end of the support wheel bracket 112. The double-ended bolt 114 connects the support wheel seat 111 and the support wheel bracket 112, and is used to adjust the rotation angle of the support wheel bracket 112 around the support wheel seat 111. During operation, the support wheel 113 rolls in contact with the ground, improving the stability of the equipment and ensuring a uniform working depth.

[0054] Furthermore, in a preferred embodiment, please refer to Figure 10 and 11 The support wheel seat 111 includes two fourth connecting plates 1111, a third connecting shaft 1112, two fifth connecting plates 1113, a first rotating shaft 1114, and two fourth U-bolts 1115. Each of the two fourth connecting plates 1111 is mounted on the front main beam 1 by a fourth U-bolt 1115 and secured with a nut. The two ends of the third connecting shaft 1112 pass through the two fourth connecting plates 1111 respectively and are welded to them. The two ends of the third connecting shaft 1112 extend to the outer sides of the two fourth connecting plates 1111 respectively. The two fifth connecting plates 1113 are connected to the outer wall of the third connecting shaft 1112. The two ends of the first rotating shaft 1114 are rotatably mounted on the two fifth connecting plates 1113 respectively. The support wheel bracket 112 includes two sixth connecting plates 1121, a connecting column 1122, and two seventh connecting plates 1123. The second rotating shaft 1124 and the two sixth connecting plates 1121 are respectively located on both sides of the two fourth connecting plates 1111. One end of the two sixth connecting plates 1121 is rotatably connected to both ends of the third connecting shaft 1112. The two sixth connecting plates 1121 are connected by a connecting column 1122. The two seventh connecting plates 1123 are both connected to the connecting column 1122. The second rotating shaft 1124 is rotatably installed between the two seventh connecting plates 1123. The first rotating shaft 1114 and the second rotating shaft 1124 are provided with threaded holes. The two ends of the double-ended bolt 114 are respectively installed in the two threaded holes. The threads at both ends of the double-ended bolt 114 are opposite in direction. When the double-ended bolt 114 is tightened, the support wheel bracket 112 can be driven to rotate around the third connecting shaft 1112, thereby adjusting the support height of the support wheel 113 and coordinating with the working depth of the deep loosening hook 4.

[0055] Working principle:

[0056] This utility model connects to a three-point suspension mechanism at the rear of the tractor via an upper suspension frame 9 and two lower suspension frames 10. Under normal operating conditions, the hydraulic cylinder 5 is in a semi-extended state, at which point the front main beam 1 and the rear main beam 2 are aligned horizontally, and multiple slack hooks 4 are symmetrically distributed at the rear of the tractor. When adjustment is required, the rear main beam 2 can be adjusted to one side by extending the hydraulic cylinder 5; conversely, the rear main beam 2 can be adjusted to the other side by retracting the hydraulic cylinder 5.

[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-scale, deep-loosening machine, characterized in that: The device includes a front main beam (1), a rear main beam (2), a connector (3), a deep slack hook (4), and a hydraulic cylinder (5). The rear main beam (2) is slidably mounted on the front main beam (1) via two connectors (3). Multiple deep slack hooks (4) are mounted on the rear main beam (2). One end of the hydraulic cylinder (5) is connected to the front main beam (1), and the other end of the hydraulic cylinder (5) is connected to a connector (3). The hydraulic cylinder (5) is used to drive the rear main beam (2) to slide on the front main beam (1).

2. The large-scale deep loosening machine according to claim 1, characterized in that: Both the front main beam (1) and the rear main beam (2) are square tube structures; the front main beam (1) is located in front of the rear main beam (2), and the front main beam (1) and the rear main beam (2) are arranged parallel to each other.

3. A large-scale deep loosening machine according to claim 1 or 2, characterized in that: The connector (3) includes a sleeve (31), a side plate (32), a base plate (33), and a first U-bolt (34). The left and right ends of the base plate (33) are respectively connected to a side plate (32), and the two side plates (32) are arranged parallel to each other. The two side plates (32) and the base plate (33) are both connected to the sleeve (31). The sleeve (31) is slidably sleeved on the front main beam (1). The two side plates (32) are each provided with an installation port (321), and the rear main beam (2) passes through the two installation ports (321) on the two side plates (32). At least one first U-bolt (34) is provided between the two side plates (32), and both ends of any one first U-bolt (34) pass through the base plate (33), and the base plate (33) is fastened to the rear main beam (2) by a nut.

4. A large-scale, deep-loosening machine according to claim 3, characterized in that: It also includes a first connecting seat (6), which is connected to the front side of a sleeve (31), and the other end of the hydraulic cylinder (5) is connected to this sleeve (31) through the first connecting seat (6).

5. A large-scale deep loosening machine according to claim 4, characterized in that: It also includes a second connecting seat (7), which is connected to the front side of the front main beam (1); one end of the hydraulic cylinder (5) is connected to the front main beam (1) through the second connecting seat (7).

6. A large-scale, deep-loosening machine according to claim 1, characterized in that: It also includes a mounting base (8), each deep loosening hook (4) is detachably mounted on the rear main beam (2) via a mounting base (8); the mounting base (8) is provided with a first mounting channel (81), and the upper end of the deep loosening hook (4) is detachably mounted in the first mounting channel (81).

7. A large-scale, deep-loosening machine according to claim 6, characterized in that: The deep loosening hook (4) includes a deep loosening leg (41), a deep loosening shovel (42), and a bolt (43). The lower end of the deep loosening leg (41) is provided with an insertion part (411). The deep loosening shovel (42) includes a shovel head (421) and a sleeve part (422). The sleeve part (422) is connected to the bottom side of the shovel head (421), and the sleeve part (422) and the bottom side of the shovel head (421) enclose to form a second installation channel (44). The insertion part (411) is detachably installed in the second installation channel (44). The lower end of the deep loosening leg (41) is provided with a first through hole (412), and the sleeve part (422) is provided with a second through hole (4221). The bolt (43) passes through the first through hole (412) and the second through hole (4221) and is fastened to the deep loosening leg (41) by a nut.

8. A large-scale deep loosening machine according to claim 1, characterized in that: It also includes an upper suspension frame (9), which is installed in the middle of the front main beam (1) and is used to connect the tractor suspension.

9. A large-scale, deep-loosening machine according to claim 8, characterized in that: It also includes a lower suspension frame (10), on which two lower suspension frames (10) are installed in a symmetrical arrangement; the lower suspension frame (10) is used to connect the tractor suspension.

10. A large-scale, deep-loosening machine according to claim 1, characterized in that: It also includes a support wheel assembly (11), with one support wheel assembly (11) installed at each of the left and right ends of the front main beam (1); the support wheel assembly (11) includes a support wheel seat (111), a support wheel bracket (112), a support wheel (113) and a double-headed bolt (114), the support wheel seat (111) is installed on the front main beam (1); one end of the support wheel bracket (112) is rotatably connected to the support wheel seat (111), and the support wheel (113) is installed at the other end of the support wheel bracket (112); the double-headed bolt (114) connects the support wheel seat (111) and the support wheel bracket (112) and is used to adjust the rotation angle of the support wheel bracket (112) around the support wheel seat (111).

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